/* Version: 0.1.26 - May 29, 2022 01:18:38 */
'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

function _typeof(obj) {
  "@babel/helpers - typeof";

  if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") {
    _typeof = function (obj) {
      return typeof obj;
    };
  } else {
    _typeof = function (obj) {
      return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
    };
  }

  return _typeof(obj);
}

var REACT_ELEMENT_TYPE;

function _jsx(type, props, key, children) {
  if (!REACT_ELEMENT_TYPE) {
    REACT_ELEMENT_TYPE = typeof Symbol === "function" && Symbol["for"] && Symbol["for"]("react.element") || 0xeac7;
  }

  var defaultProps = type && type.defaultProps;
  var childrenLength = arguments.length - 3;

  if (!props && childrenLength !== 0) {
    props = {
      children: void 0
    };
  }

  if (childrenLength === 1) {
    props.children = children;
  } else if (childrenLength > 1) {
    var childArray = new Array(childrenLength);

    for (var i = 0; i < childrenLength; i++) {
      childArray[i] = arguments[i + 3];
    }

    props.children = childArray;
  }

  if (props && defaultProps) {
    for (var propName in defaultProps) {
      if (props[propName] === void 0) {
        props[propName] = defaultProps[propName];
      }
    }
  } else if (!props) {
    props = defaultProps || {};
  }

  return {
    $$typeof: REACT_ELEMENT_TYPE,
    type: type,
    key: key === undefined ? null : '' + key,
    ref: null,
    props: props,
    _owner: null
  };
}

function _asyncIterator(iterable) {
  var method;

  if (typeof Symbol !== "undefined") {
    if (Symbol.asyncIterator) {
      method = iterable[Symbol.asyncIterator];
      if (method != null) return method.call(iterable);
    }

    if (Symbol.iterator) {
      method = iterable[Symbol.iterator];
      if (method != null) return method.call(iterable);
    }
  }

  throw new TypeError("Object is not async iterable");
}

function _AwaitValue(value) {
  this.wrapped = value;
}

function _AsyncGenerator(gen) {
  var front, back;

  function send(key, arg) {
    return new Promise(function (resolve, reject) {
      var request = {
        key: key,
        arg: arg,
        resolve: resolve,
        reject: reject,
        next: null
      };

      if (back) {
        back = back.next = request;
      } else {
        front = back = request;
        resume(key, arg);
      }
    });
  }

  function resume(key, arg) {
    try {
      var result = gen[key](arg);
      var value = result.value;
      var wrappedAwait = value instanceof _AwaitValue;
      Promise.resolve(wrappedAwait ? value.wrapped : value).then(function (arg) {
        if (wrappedAwait) {
          resume(key === "return" ? "return" : "next", arg);
          return;
        }

        settle(result.done ? "return" : "normal", arg);
      }, function (err) {
        resume("throw", err);
      });
    } catch (err) {
      settle("throw", err);
    }
  }

  function settle(type, value) {
    switch (type) {
      case "return":
        front.resolve({
          value: value,
          done: true
        });
        break;

      case "throw":
        front.reject(value);
        break;

      default:
        front.resolve({
          value: value,
          done: false
        });
        break;
    }

    front = front.next;

    if (front) {
      resume(front.key, front.arg);
    } else {
      back = null;
    }
  }

  this._invoke = send;

  if (typeof gen.return !== "function") {
    this.return = undefined;
  }
}

if (typeof Symbol === "function" && Symbol.asyncIterator) {
  _AsyncGenerator.prototype[Symbol.asyncIterator] = function () {
    return this;
  };
}

_AsyncGenerator.prototype.next = function (arg) {
  return this._invoke("next", arg);
};

_AsyncGenerator.prototype.throw = function (arg) {
  return this._invoke("throw", arg);
};

_AsyncGenerator.prototype.return = function (arg) {
  return this._invoke("return", arg);
};

function _wrapAsyncGenerator(fn) {
  return function () {
    return new _AsyncGenerator(fn.apply(this, arguments));
  };
}

function _awaitAsyncGenerator(value) {
  return new _AwaitValue(value);
}

function _asyncGeneratorDelegate(inner, awaitWrap) {
  var iter = {},
      waiting = false;

  function pump(key, value) {
    waiting = true;
    value = new Promise(function (resolve) {
      resolve(inner[key](value));
    });
    return {
      done: false,
      value: awaitWrap(value)
    };
  }

  ;

  if (typeof Symbol === "function" && Symbol.iterator) {
    iter[Symbol.iterator] = function () {
      return this;
    };
  }

  iter.next = function (value) {
    if (waiting) {
      waiting = false;
      return value;
    }

    return pump("next", value);
  };

  if (typeof inner.throw === "function") {
    iter.throw = function (value) {
      if (waiting) {
        waiting = false;
        throw value;
      }

      return pump("throw", value);
    };
  }

  if (typeof inner.return === "function") {
    iter.return = function (value) {
      if (waiting) {
        waiting = false;
        return value;
      }

      return pump("return", value);
    };
  }

  return iter;
}

function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) {
  try {
    var info = gen[key](arg);
    var value = info.value;
  } catch (error) {
    reject(error);
    return;
  }

  if (info.done) {
    resolve(value);
  } else {
    Promise.resolve(value).then(_next, _throw);
  }
}

function _asyncToGenerator(fn) {
  return function () {
    var self = this,
        args = arguments;
    return new Promise(function (resolve, reject) {
      var gen = fn.apply(self, args);

      function _next(value) {
        asyncGeneratorStep(gen, resolve, reject, _next, _throw, "next", value);
      }

      function _throw(err) {
        asyncGeneratorStep(gen, resolve, reject, _next, _throw, "throw", err);
      }

      _next(undefined);
    });
  };
}

function _classCallCheck(instance, Constructor) {
  if (!(instance instanceof Constructor)) {
    throw new TypeError("Cannot call a class as a function");
  }
}

function _defineProperties(target, props) {
  for (var i = 0; i < props.length; i++) {
    var descriptor = props[i];
    descriptor.enumerable = descriptor.enumerable || false;
    descriptor.configurable = true;
    if ("value" in descriptor) descriptor.writable = true;
    Object.defineProperty(target, descriptor.key, descriptor);
  }
}

function _createClass(Constructor, protoProps, staticProps) {
  if (protoProps) _defineProperties(Constructor.prototype, protoProps);
  if (staticProps) _defineProperties(Constructor, staticProps);
  return Constructor;
}

function _defineEnumerableProperties(obj, descs) {
  for (var key in descs) {
    var desc = descs[key];
    desc.configurable = desc.enumerable = true;
    if ("value" in desc) desc.writable = true;
    Object.defineProperty(obj, key, desc);
  }

  if (Object.getOwnPropertySymbols) {
    var objectSymbols = Object.getOwnPropertySymbols(descs);

    for (var i = 0; i < objectSymbols.length; i++) {
      var sym = objectSymbols[i];
      var desc = descs[sym];
      desc.configurable = desc.enumerable = true;
      if ("value" in desc) desc.writable = true;
      Object.defineProperty(obj, sym, desc);
    }
  }

  return obj;
}

function _defaults(obj, defaults) {
  var keys = Object.getOwnPropertyNames(defaults);

  for (var i = 0; i < keys.length; i++) {
    var key = keys[i];
    var value = Object.getOwnPropertyDescriptor(defaults, key);

    if (value && value.configurable && obj[key] === undefined) {
      Object.defineProperty(obj, key, value);
    }
  }

  return obj;
}

function _defineProperty(obj, key, value) {
  if (key in obj) {
    Object.defineProperty(obj, key, {
      value: value,
      enumerable: true,
      configurable: true,
      writable: true
    });
  } else {
    obj[key] = value;
  }

  return obj;
}

function _extends() {
  _extends = Object.assign || function (target) {
    for (var i = 1; i < arguments.length; i++) {
      var source = arguments[i];

      for (var key in source) {
        if (Object.prototype.hasOwnProperty.call(source, key)) {
          target[key] = source[key];
        }
      }
    }

    return target;
  };

  return _extends.apply(this, arguments);
}

function _objectSpread(target) {
  for (var i = 1; i < arguments.length; i++) {
    var source = arguments[i] != null ? Object(arguments[i]) : {};
    var ownKeys = Object.keys(source);

    if (typeof Object.getOwnPropertySymbols === 'function') {
      ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) {
        return Object.getOwnPropertyDescriptor(source, sym).enumerable;
      }));
    }

    ownKeys.forEach(function (key) {
      _defineProperty(target, key, source[key]);
    });
  }

  return target;
}

function ownKeys(object, enumerableOnly) {
  var keys = Object.keys(object);

  if (Object.getOwnPropertySymbols) {
    var symbols = Object.getOwnPropertySymbols(object);
    if (enumerableOnly) symbols = symbols.filter(function (sym) {
      return Object.getOwnPropertyDescriptor(object, sym).enumerable;
    });
    keys.push.apply(keys, symbols);
  }

  return keys;
}

function _objectSpread2(target) {
  for (var i = 1; i < arguments.length; i++) {
    var source = arguments[i] != null ? arguments[i] : {};

    if (i % 2) {
      ownKeys(Object(source), true).forEach(function (key) {
        _defineProperty(target, key, source[key]);
      });
    } else if (Object.getOwnPropertyDescriptors) {
      Object.defineProperties(target, Object.getOwnPropertyDescriptors(source));
    } else {
      ownKeys(Object(source)).forEach(function (key) {
        Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key));
      });
    }
  }

  return target;
}

function _inherits(subClass, superClass) {
  if (typeof superClass !== "function" && superClass !== null) {
    throw new TypeError("Super expression must either be null or a function");
  }

  subClass.prototype = Object.create(superClass && superClass.prototype, {
    constructor: {
      value: subClass,
      writable: true,
      configurable: true
    }
  });
  if (superClass) _setPrototypeOf(subClass, superClass);
}

function _inheritsLoose(subClass, superClass) {
  subClass.prototype = Object.create(superClass.prototype);
  subClass.prototype.constructor = subClass;

  _setPrototypeOf(subClass, superClass);
}

function _getPrototypeOf(o) {
  _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) {
    return o.__proto__ || Object.getPrototypeOf(o);
  };
  return _getPrototypeOf(o);
}

function _setPrototypeOf(o, p) {
  _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) {
    o.__proto__ = p;
    return o;
  };

  return _setPrototypeOf(o, p);
}

function _isNativeReflectConstruct() {
  if (typeof Reflect === "undefined" || !Reflect.construct) return false;
  if (Reflect.construct.sham) return false;
  if (typeof Proxy === "function") return true;

  try {
    Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {}));
    return true;
  } catch (e) {
    return false;
  }
}

function _construct(Parent, args, Class) {
  if (_isNativeReflectConstruct()) {
    _construct = Reflect.construct;
  } else {
    _construct = function _construct(Parent, args, Class) {
      var a = [null];
      a.push.apply(a, args);
      var Constructor = Function.bind.apply(Parent, a);
      var instance = new Constructor();
      if (Class) _setPrototypeOf(instance, Class.prototype);
      return instance;
    };
  }

  return _construct.apply(null, arguments);
}

function _isNativeFunction(fn) {
  return Function.toString.call(fn).indexOf("[native code]") !== -1;
}

function _wrapNativeSuper(Class) {
  var _cache = typeof Map === "function" ? new Map() : undefined;

  _wrapNativeSuper = function _wrapNativeSuper(Class) {
    if (Class === null || !_isNativeFunction(Class)) return Class;

    if (typeof Class !== "function") {
      throw new TypeError("Super expression must either be null or a function");
    }

    if (typeof _cache !== "undefined") {
      if (_cache.has(Class)) return _cache.get(Class);

      _cache.set(Class, Wrapper);
    }

    function Wrapper() {
      return _construct(Class, arguments, _getPrototypeOf(this).constructor);
    }

    Wrapper.prototype = Object.create(Class.prototype, {
      constructor: {
        value: Wrapper,
        enumerable: false,
        writable: true,
        configurable: true
      }
    });
    return _setPrototypeOf(Wrapper, Class);
  };

  return _wrapNativeSuper(Class);
}

function _instanceof(left, right) {
  if (right != null && typeof Symbol !== "undefined" && right[Symbol.hasInstance]) {
    return !!right[Symbol.hasInstance](left);
  } else {
    return left instanceof right;
  }
}

function _interopRequireDefault(obj) {
  return obj && obj.__esModule ? obj : {
    default: obj
  };
}

function _getRequireWildcardCache() {
  if (typeof WeakMap !== "function") return null;
  var cache = new WeakMap();

  _getRequireWildcardCache = function () {
    return cache;
  };

  return cache;
}

function _interopRequireWildcard(obj) {
  if (obj && obj.__esModule) {
    return obj;
  }

  if (obj === null || typeof obj !== "object" && typeof obj !== "function") {
    return {
      default: obj
    };
  }

  var cache = _getRequireWildcardCache();

  if (cache && cache.has(obj)) {
    return cache.get(obj);
  }

  var newObj = {};
  var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor;

  for (var key in obj) {
    if (Object.prototype.hasOwnProperty.call(obj, key)) {
      var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null;

      if (desc && (desc.get || desc.set)) {
        Object.defineProperty(newObj, key, desc);
      } else {
        newObj[key] = obj[key];
      }
    }
  }

  newObj.default = obj;

  if (cache) {
    cache.set(obj, newObj);
  }

  return newObj;
}

function _newArrowCheck(innerThis, boundThis) {
  if (innerThis !== boundThis) {
    throw new TypeError("Cannot instantiate an arrow function");
  }
}

function _objectDestructuringEmpty(obj) {
  if (obj == null) throw new TypeError("Cannot destructure undefined");
}

function _objectWithoutPropertiesLoose(source, excluded) {
  if (source == null) return {};
  var target = {};
  var sourceKeys = Object.keys(source);
  var key, i;

  for (i = 0; i < sourceKeys.length; i++) {
    key = sourceKeys[i];
    if (excluded.indexOf(key) >= 0) continue;
    target[key] = source[key];
  }

  return target;
}

function _objectWithoutProperties(source, excluded) {
  if (source == null) return {};

  var target = _objectWithoutPropertiesLoose(source, excluded);

  var key, i;

  if (Object.getOwnPropertySymbols) {
    var sourceSymbolKeys = Object.getOwnPropertySymbols(source);

    for (i = 0; i < sourceSymbolKeys.length; i++) {
      key = sourceSymbolKeys[i];
      if (excluded.indexOf(key) >= 0) continue;
      if (!Object.prototype.propertyIsEnumerable.call(source, key)) continue;
      target[key] = source[key];
    }
  }

  return target;
}

function _assertThisInitialized(self) {
  if (self === void 0) {
    throw new ReferenceError("this hasn't been initialised - super() hasn't been called");
  }

  return self;
}

function _possibleConstructorReturn(self, call) {
  if (call && (typeof call === "object" || typeof call === "function")) {
    return call;
  }

  return _assertThisInitialized(self);
}

function _createSuper(Derived) {
  var hasNativeReflectConstruct = _isNativeReflectConstruct();

  return function _createSuperInternal() {
    var Super = _getPrototypeOf(Derived),
        result;

    if (hasNativeReflectConstruct) {
      var NewTarget = _getPrototypeOf(this).constructor;

      result = Reflect.construct(Super, arguments, NewTarget);
    } else {
      result = Super.apply(this, arguments);
    }

    return _possibleConstructorReturn(this, result);
  };
}

function _superPropBase(object, property) {
  while (!Object.prototype.hasOwnProperty.call(object, property)) {
    object = _getPrototypeOf(object);
    if (object === null) break;
  }

  return object;
}

function _get(target, property, receiver) {
  if (typeof Reflect !== "undefined" && Reflect.get) {
    _get = Reflect.get;
  } else {
    _get = function _get(target, property, receiver) {
      var base = _superPropBase(target, property);

      if (!base) return;
      var desc = Object.getOwnPropertyDescriptor(base, property);

      if (desc.get) {
        return desc.get.call(receiver);
      }

      return desc.value;
    };
  }

  return _get(target, property, receiver || target);
}

function set(target, property, value, receiver) {
  if (typeof Reflect !== "undefined" && Reflect.set) {
    set = Reflect.set;
  } else {
    set = function set(target, property, value, receiver) {
      var base = _superPropBase(target, property);

      var desc;

      if (base) {
        desc = Object.getOwnPropertyDescriptor(base, property);

        if (desc.set) {
          desc.set.call(receiver, value);
          return true;
        } else if (!desc.writable) {
          return false;
        }
      }

      desc = Object.getOwnPropertyDescriptor(receiver, property);

      if (desc) {
        if (!desc.writable) {
          return false;
        }

        desc.value = value;
        Object.defineProperty(receiver, property, desc);
      } else {
        _defineProperty(receiver, property, value);
      }

      return true;
    };
  }

  return set(target, property, value, receiver);
}

function _set(target, property, value, receiver, isStrict) {
  var s = set(target, property, value, receiver || target);

  if (!s && isStrict) {
    throw new Error('failed to set property');
  }

  return value;
}

function _taggedTemplateLiteral(strings, raw) {
  if (!raw) {
    raw = strings.slice(0);
  }

  return Object.freeze(Object.defineProperties(strings, {
    raw: {
      value: Object.freeze(raw)
    }
  }));
}

function _taggedTemplateLiteralLoose(strings, raw) {
  if (!raw) {
    raw = strings.slice(0);
  }

  strings.raw = raw;
  return strings;
}

function _readOnlyError(name) {
  throw new TypeError("\"" + name + "\" is read-only");
}

function _writeOnlyError(name) {
  throw new TypeError("\"" + name + "\" is write-only");
}

function _classNameTDZError(name) {
  throw new Error("Class \"" + name + "\" cannot be referenced in computed property keys.");
}

function _temporalUndefined() {}

function _tdz(name) {
  throw new ReferenceError(name + " is not defined - temporal dead zone");
}

function _temporalRef(val, name) {
  return val === _temporalUndefined ? _tdz(name) : val;
}

function _slicedToArray(arr, i) {
  return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest();
}

function _slicedToArrayLoose(arr, i) {
  return _arrayWithHoles(arr) || _iterableToArrayLimitLoose(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest();
}

function _toArray(arr) {
  return _arrayWithHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableRest();
}

function _toConsumableArray(arr) {
  return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableSpread();
}

function _arrayWithoutHoles(arr) {
  if (Array.isArray(arr)) return _arrayLikeToArray(arr);
}

function _arrayWithHoles(arr) {
  if (Array.isArray(arr)) return arr;
}

function _maybeArrayLike(next, arr, i) {
  if (arr && !Array.isArray(arr) && typeof arr.length === "number") {
    var len = arr.length;
    return _arrayLikeToArray(arr, i !== void 0 && i < len ? i : len);
  }

  return next(arr, i);
}

function _iterableToArray(iter) {
  if (typeof Symbol !== "undefined" && Symbol.iterator in Object(iter)) return Array.from(iter);
}

function _iterableToArrayLimit(arr, i) {
  if (typeof Symbol === "undefined" || !(Symbol.iterator in Object(arr))) return;
  var _arr = [];
  var _n = true;
  var _d = false;
  var _e = undefined;

  try {
    for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) {
      _arr.push(_s.value);

      if (i && _arr.length === i) break;
    }
  } catch (err) {
    _d = true;
    _e = err;
  } finally {
    try {
      if (!_n && _i["return"] != null) _i["return"]();
    } finally {
      if (_d) throw _e;
    }
  }

  return _arr;
}

function _iterableToArrayLimitLoose(arr, i) {
  if (typeof Symbol === "undefined" || !(Symbol.iterator in Object(arr))) return;
  var _arr = [];

  for (var _iterator = arr[Symbol.iterator](), _step; !(_step = _iterator.next()).done;) {
    _arr.push(_step.value);

    if (i && _arr.length === i) break;
  }

  return _arr;
}

function _unsupportedIterableToArray(o, minLen) {
  if (!o) return;
  if (typeof o === "string") return _arrayLikeToArray(o, minLen);
  var n = Object.prototype.toString.call(o).slice(8, -1);
  if (n === "Object" && o.constructor) n = o.constructor.name;
  if (n === "Map" || n === "Set") return Array.from(o);
  if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen);
}

function _arrayLikeToArray(arr, len) {
  if (len == null || len > arr.length) len = arr.length;

  for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i];

  return arr2;
}

function _nonIterableSpread() {
  throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
}

function _nonIterableRest() {
  throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
}

function _createForOfIteratorHelper(o, allowArrayLike) {
  var it;

  if (typeof Symbol === "undefined" || o[Symbol.iterator] == null) {
    if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") {
      if (it) o = it;
      var i = 0;

      var F = function () {};

      return {
        s: F,
        n: function () {
          if (i >= o.length) return {
            done: true
          };
          return {
            done: false,
            value: o[i++]
          };
        },
        e: function (e) {
          throw e;
        },
        f: F
      };
    }

    throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
  }

  var normalCompletion = true,
      didErr = false,
      err;
  return {
    s: function () {
      it = o[Symbol.iterator]();
    },
    n: function () {
      var step = it.next();
      normalCompletion = step.done;
      return step;
    },
    e: function (e) {
      didErr = true;
      err = e;
    },
    f: function () {
      try {
        if (!normalCompletion && it.return != null) it.return();
      } finally {
        if (didErr) throw err;
      }
    }
  };
}

function _createForOfIteratorHelperLoose(o, allowArrayLike) {
  var it;

  if (typeof Symbol === "undefined" || o[Symbol.iterator] == null) {
    if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") {
      if (it) o = it;
      var i = 0;
      return function () {
        if (i >= o.length) return {
          done: true
        };
        return {
          done: false,
          value: o[i++]
        };
      };
    }

    throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
  }

  it = o[Symbol.iterator]();
  return it.next.bind(it);
}

function _skipFirstGeneratorNext(fn) {
  return function () {
    var it = fn.apply(this, arguments);
    it.next();
    return it;
  };
}

function _toPrimitive(input, hint) {
  if (typeof input !== "object" || input === null) return input;
  var prim = input[Symbol.toPrimitive];

  if (prim !== undefined) {
    var res = prim.call(input, hint || "default");
    if (typeof res !== "object") return res;
    throw new TypeError("@@toPrimitive must return a primitive value.");
  }

  return (hint === "string" ? String : Number)(input);
}

function _toPropertyKey(arg) {
  var key = _toPrimitive(arg, "string");

  return typeof key === "symbol" ? key : String(key);
}

function _initializerWarningHelper(descriptor, context) {
  throw new Error('Decorating class property failed. Please ensure that ' + 'proposal-class-properties is enabled and runs after the decorators transform.');
}

function _initializerDefineProperty(target, property, descriptor, context) {
  if (!descriptor) return;
  Object.defineProperty(target, property, {
    enumerable: descriptor.enumerable,
    configurable: descriptor.configurable,
    writable: descriptor.writable,
    value: descriptor.initializer ? descriptor.initializer.call(context) : void 0
  });
}

function _applyDecoratedDescriptor(target, property, decorators, descriptor, context) {
  var desc = {};
  Object.keys(descriptor).forEach(function (key) {
    desc[key] = descriptor[key];
  });
  desc.enumerable = !!desc.enumerable;
  desc.configurable = !!desc.configurable;

  if ('value' in desc || desc.initializer) {
    desc.writable = true;
  }

  desc = decorators.slice().reverse().reduce(function (desc, decorator) {
    return decorator(target, property, desc) || desc;
  }, desc);

  if (context && desc.initializer !== void 0) {
    desc.value = desc.initializer ? desc.initializer.call(context) : void 0;
    desc.initializer = undefined;
  }

  if (desc.initializer === void 0) {
    Object.defineProperty(target, property, desc);
    desc = null;
  }

  return desc;
}

var id = 0;

function _classPrivateFieldLooseKey(name) {
  return "__private_" + id++ + "_" + name;
}

function _classPrivateFieldLooseBase(receiver, privateKey) {
  if (!Object.prototype.hasOwnProperty.call(receiver, privateKey)) {
    throw new TypeError("attempted to use private field on non-instance");
  }

  return receiver;
}

function _classPrivateFieldGet(receiver, privateMap) {
  var descriptor = _classExtractFieldDescriptor(receiver, privateMap, "get");

  return _classApplyDescriptorGet(receiver, descriptor);
}

function _classPrivateFieldSet(receiver, privateMap, value) {
  var descriptor = _classExtractFieldDescriptor(receiver, privateMap, "set");

  _classApplyDescriptorSet(receiver, descriptor, value);

  return value;
}

function _classPrivateFieldDestructureSet(receiver, privateMap) {
  var descriptor = _classExtractFieldDescriptor(receiver, privateMap, "set");

  return _classApplyDescriptorDestructureSet(receiver, descriptor);
}

function _classExtractFieldDescriptor(receiver, privateMap, action) {
  if (!privateMap.has(receiver)) {
    throw new TypeError("attempted to " + action + " private field on non-instance");
  }

  return privateMap.get(receiver);
}

function _classStaticPrivateFieldSpecGet(receiver, classConstructor, descriptor) {
  _classCheckPrivateStaticAccess(receiver, classConstructor);

  _classCheckPrivateStaticFieldDescriptor(descriptor, "get");

  return _classApplyDescriptorGet(receiver, descriptor);
}

function _classStaticPrivateFieldSpecSet(receiver, classConstructor, descriptor, value) {
  _classCheckPrivateStaticAccess(receiver, classConstructor);

  _classCheckPrivateStaticFieldDescriptor(descriptor, "set");

  _classApplyDescriptorSet(receiver, descriptor, value);

  return value;
}

function _classStaticPrivateMethodGet(receiver, classConstructor, method) {
  _classCheckPrivateStaticAccess(receiver, classConstructor);

  return method;
}

function _classStaticPrivateMethodSet() {
  throw new TypeError("attempted to set read only static private field");
}

function _classApplyDescriptorGet(receiver, descriptor) {
  if (descriptor.get) {
    return descriptor.get.call(receiver);
  }

  return descriptor.value;
}

function _classApplyDescriptorSet(receiver, descriptor, value) {
  if (descriptor.set) {
    descriptor.set.call(receiver, value);
  } else {
    if (!descriptor.writable) {
      throw new TypeError("attempted to set read only private field");
    }

    descriptor.value = value;
  }
}

function _classApplyDescriptorDestructureSet(receiver, descriptor) {
  if (descriptor.set) {
    if (!("__destrObj" in descriptor)) {
      descriptor.__destrObj = {
        set value(v) {
          descriptor.set.call(receiver, v);
        }

      };
    }

    return descriptor.__destrObj;
  } else {
    if (!descriptor.writable) {
      throw new TypeError("attempted to set read only private field");
    }

    return descriptor;
  }
}

function _classStaticPrivateFieldDestructureSet(receiver, classConstructor, descriptor) {
  _classCheckPrivateStaticAccess(receiver, classConstructor);

  _classCheckPrivateStaticFieldDescriptor(descriptor, "set");

  return _classApplyDescriptorDestructureSet(receiver, descriptor);
}

function _classCheckPrivateStaticAccess(receiver, classConstructor) {
  if (receiver !== classConstructor) {
    throw new TypeError("Private static access of wrong provenance");
  }
}

function _classCheckPrivateStaticFieldDescriptor(descriptor, action) {
  if (descriptor === undefined) {
    throw new TypeError("attempted to " + action + " private static field before its declaration");
  }
}

function _decorate(decorators, factory, superClass, mixins) {
  var api = _getDecoratorsApi();

  if (mixins) {
    for (var i = 0; i < mixins.length; i++) {
      api = mixins[i](api);
    }
  }

  var r = factory(function initialize(O) {
    api.initializeInstanceElements(O, decorated.elements);
  }, superClass);
  var decorated = api.decorateClass(_coalesceClassElements(r.d.map(_createElementDescriptor)), decorators);
  api.initializeClassElements(r.F, decorated.elements);
  return api.runClassFinishers(r.F, decorated.finishers);
}

function _getDecoratorsApi() {
  _getDecoratorsApi = function () {
    return api;
  };

  var api = {
    elementsDefinitionOrder: [["method"], ["field"]],
    initializeInstanceElements: function (O, elements) {
      ["method", "field"].forEach(function (kind) {
        elements.forEach(function (element) {
          if (element.kind === kind && element.placement === "own") {
            this.defineClassElement(O, element);
          }
        }, this);
      }, this);
    },
    initializeClassElements: function (F, elements) {
      var proto = F.prototype;
      ["method", "field"].forEach(function (kind) {
        elements.forEach(function (element) {
          var placement = element.placement;

          if (element.kind === kind && (placement === "static" || placement === "prototype")) {
            var receiver = placement === "static" ? F : proto;
            this.defineClassElement(receiver, element);
          }
        }, this);
      }, this);
    },
    defineClassElement: function (receiver, element) {
      var descriptor = element.descriptor;

      if (element.kind === "field") {
        var initializer = element.initializer;
        descriptor = {
          enumerable: descriptor.enumerable,
          writable: descriptor.writable,
          configurable: descriptor.configurable,
          value: initializer === void 0 ? void 0 : initializer.call(receiver)
        };
      }

      Object.defineProperty(receiver, element.key, descriptor);
    },
    decorateClass: function (elements, decorators) {
      var newElements = [];
      var finishers = [];
      var placements = {
        static: [],
        prototype: [],
        own: []
      };
      elements.forEach(function (element) {
        this.addElementPlacement(element, placements);
      }, this);
      elements.forEach(function (element) {
        if (!_hasDecorators(element)) return newElements.push(element);
        var elementFinishersExtras = this.decorateElement(element, placements);
        newElements.push(elementFinishersExtras.element);
        newElements.push.apply(newElements, elementFinishersExtras.extras);
        finishers.push.apply(finishers, elementFinishersExtras.finishers);
      }, this);

      if (!decorators) {
        return {
          elements: newElements,
          finishers: finishers
        };
      }

      var result = this.decorateConstructor(newElements, decorators);
      finishers.push.apply(finishers, result.finishers);
      result.finishers = finishers;
      return result;
    },
    addElementPlacement: function (element, placements, silent) {
      var keys = placements[element.placement];

      if (!silent && keys.indexOf(element.key) !== -1) {
        throw new TypeError("Duplicated element (" + element.key + ")");
      }

      keys.push(element.key);
    },
    decorateElement: function (element, placements) {
      var extras = [];
      var finishers = [];

      for (var decorators = element.decorators, i = decorators.length - 1; i >= 0; i--) {
        var keys = placements[element.placement];
        keys.splice(keys.indexOf(element.key), 1);
        var elementObject = this.fromElementDescriptor(element);
        var elementFinisherExtras = this.toElementFinisherExtras((0, decorators[i])(elementObject) || elementObject);
        element = elementFinisherExtras.element;
        this.addElementPlacement(element, placements);

        if (elementFinisherExtras.finisher) {
          finishers.push(elementFinisherExtras.finisher);
        }

        var newExtras = elementFinisherExtras.extras;

        if (newExtras) {
          for (var j = 0; j < newExtras.length; j++) {
            this.addElementPlacement(newExtras[j], placements);
          }

          extras.push.apply(extras, newExtras);
        }
      }

      return {
        element: element,
        finishers: finishers,
        extras: extras
      };
    },
    decorateConstructor: function (elements, decorators) {
      var finishers = [];

      for (var i = decorators.length - 1; i >= 0; i--) {
        var obj = this.fromClassDescriptor(elements);
        var elementsAndFinisher = this.toClassDescriptor((0, decorators[i])(obj) || obj);

        if (elementsAndFinisher.finisher !== undefined) {
          finishers.push(elementsAndFinisher.finisher);
        }

        if (elementsAndFinisher.elements !== undefined) {
          elements = elementsAndFinisher.elements;

          for (var j = 0; j < elements.length - 1; j++) {
            for (var k = j + 1; k < elements.length; k++) {
              if (elements[j].key === elements[k].key && elements[j].placement === elements[k].placement) {
                throw new TypeError("Duplicated element (" + elements[j].key + ")");
              }
            }
          }
        }
      }

      return {
        elements: elements,
        finishers: finishers
      };
    },
    fromElementDescriptor: function (element) {
      var obj = {
        kind: element.kind,
        key: element.key,
        placement: element.placement,
        descriptor: element.descriptor
      };
      var desc = {
        value: "Descriptor",
        configurable: true
      };
      Object.defineProperty(obj, Symbol.toStringTag, desc);
      if (element.kind === "field") obj.initializer = element.initializer;
      return obj;
    },
    toElementDescriptors: function (elementObjects) {
      if (elementObjects === undefined) return;
      return _toArray(elementObjects).map(function (elementObject) {
        var element = this.toElementDescriptor(elementObject);
        this.disallowProperty(elementObject, "finisher", "An element descriptor");
        this.disallowProperty(elementObject, "extras", "An element descriptor");
        return element;
      }, this);
    },
    toElementDescriptor: function (elementObject) {
      var kind = String(elementObject.kind);

      if (kind !== "method" && kind !== "field") {
        throw new TypeError('An element descriptor\'s .kind property must be either "method" or' + ' "field", but a decorator created an element descriptor with' + ' .kind "' + kind + '"');
      }

      var key = _toPropertyKey(elementObject.key);

      var placement = String(elementObject.placement);

      if (placement !== "static" && placement !== "prototype" && placement !== "own") {
        throw new TypeError('An element descriptor\'s .placement property must be one of "static",' + ' "prototype" or "own", but a decorator created an element descriptor' + ' with .placement "' + placement + '"');
      }

      var descriptor = elementObject.descriptor;
      this.disallowProperty(elementObject, "elements", "An element descriptor");
      var element = {
        kind: kind,
        key: key,
        placement: placement,
        descriptor: Object.assign({}, descriptor)
      };

      if (kind !== "field") {
        this.disallowProperty(elementObject, "initializer", "A method descriptor");
      } else {
        this.disallowProperty(descriptor, "get", "The property descriptor of a field descriptor");
        this.disallowProperty(descriptor, "set", "The property descriptor of a field descriptor");
        this.disallowProperty(descriptor, "value", "The property descriptor of a field descriptor");
        element.initializer = elementObject.initializer;
      }

      return element;
    },
    toElementFinisherExtras: function (elementObject) {
      var element = this.toElementDescriptor(elementObject);

      var finisher = _optionalCallableProperty(elementObject, "finisher");

      var extras = this.toElementDescriptors(elementObject.extras);
      return {
        element: element,
        finisher: finisher,
        extras: extras
      };
    },
    fromClassDescriptor: function (elements) {
      var obj = {
        kind: "class",
        elements: elements.map(this.fromElementDescriptor, this)
      };
      var desc = {
        value: "Descriptor",
        configurable: true
      };
      Object.defineProperty(obj, Symbol.toStringTag, desc);
      return obj;
    },
    toClassDescriptor: function (obj) {
      var kind = String(obj.kind);

      if (kind !== "class") {
        throw new TypeError('A class descriptor\'s .kind property must be "class", but a decorator' + ' created a class descriptor with .kind "' + kind + '"');
      }

      this.disallowProperty(obj, "key", "A class descriptor");
      this.disallowProperty(obj, "placement", "A class descriptor");
      this.disallowProperty(obj, "descriptor", "A class descriptor");
      this.disallowProperty(obj, "initializer", "A class descriptor");
      this.disallowProperty(obj, "extras", "A class descriptor");

      var finisher = _optionalCallableProperty(obj, "finisher");

      var elements = this.toElementDescriptors(obj.elements);
      return {
        elements: elements,
        finisher: finisher
      };
    },
    runClassFinishers: function (constructor, finishers) {
      for (var i = 0; i < finishers.length; i++) {
        var newConstructor = (0, finishers[i])(constructor);

        if (newConstructor !== undefined) {
          if (typeof newConstructor !== "function") {
            throw new TypeError("Finishers must return a constructor.");
          }

          constructor = newConstructor;
        }
      }

      return constructor;
    },
    disallowProperty: function (obj, name, objectType) {
      if (obj[name] !== undefined) {
        throw new TypeError(objectType + " can't have a ." + name + " property.");
      }
    }
  };
  return api;
}

function _createElementDescriptor(def) {
  var key = _toPropertyKey(def.key);

  var descriptor;

  if (def.kind === "method") {
    descriptor = {
      value: def.value,
      writable: true,
      configurable: true,
      enumerable: false
    };
  } else if (def.kind === "get") {
    descriptor = {
      get: def.value,
      configurable: true,
      enumerable: false
    };
  } else if (def.kind === "set") {
    descriptor = {
      set: def.value,
      configurable: true,
      enumerable: false
    };
  } else if (def.kind === "field") {
    descriptor = {
      configurable: true,
      writable: true,
      enumerable: true
    };
  }

  var element = {
    kind: def.kind === "field" ? "field" : "method",
    key: key,
    placement: def.static ? "static" : def.kind === "field" ? "own" : "prototype",
    descriptor: descriptor
  };
  if (def.decorators) element.decorators = def.decorators;
  if (def.kind === "field") element.initializer = def.value;
  return element;
}

function _coalesceGetterSetter(element, other) {
  if (element.descriptor.get !== undefined) {
    other.descriptor.get = element.descriptor.get;
  } else {
    other.descriptor.set = element.descriptor.set;
  }
}

function _coalesceClassElements(elements) {
  var newElements = [];

  var isSameElement = function (other) {
    return other.kind === "method" && other.key === element.key && other.placement === element.placement;
  };

  for (var i = 0; i < elements.length; i++) {
    var element = elements[i];
    var other;

    if (element.kind === "method" && (other = newElements.find(isSameElement))) {
      if (_isDataDescriptor(element.descriptor) || _isDataDescriptor(other.descriptor)) {
        if (_hasDecorators(element) || _hasDecorators(other)) {
          throw new ReferenceError("Duplicated methods (" + element.key + ") can't be decorated.");
        }

        other.descriptor = element.descriptor;
      } else {
        if (_hasDecorators(element)) {
          if (_hasDecorators(other)) {
            throw new ReferenceError("Decorators can't be placed on different accessors with for " + "the same property (" + element.key + ").");
          }

          other.decorators = element.decorators;
        }

        _coalesceGetterSetter(element, other);
      }
    } else {
      newElements.push(element);
    }
  }

  return newElements;
}

function _hasDecorators(element) {
  return element.decorators && element.decorators.length;
}

function _isDataDescriptor(desc) {
  return desc !== undefined && !(desc.value === undefined && desc.writable === undefined);
}

function _optionalCallableProperty(obj, name) {
  var value = obj[name];

  if (value !== undefined && typeof value !== "function") {
    throw new TypeError("Expected '" + name + "' to be a function");
  }

  return value;
}

function _classPrivateMethodGet(receiver, privateSet, fn) {
  if (!privateSet.has(receiver)) {
    throw new TypeError("attempted to get private field on non-instance");
  }

  return fn;
}

function _classPrivateMethodSet() {
  throw new TypeError("attempted to reassign private method");
}

function _wrapRegExp(re, groups) {
  _wrapRegExp = function (re, groups) {
    return new BabelRegExp(re, undefined, groups);
  };

  var _RegExp = _wrapNativeSuper(RegExp);

  var _super = RegExp.prototype;

  var _groups = new WeakMap();

  function BabelRegExp(re, flags, groups) {
    var _this = _RegExp.call(this, re, flags);

    _groups.set(_this, groups || _groups.get(re));

    return _this;
  }

  _inherits(BabelRegExp, _RegExp);

  BabelRegExp.prototype.exec = function (str) {
    var result = _super.exec.call(this, str);

    if (result) result.groups = buildGroups(result, this);
    return result;
  };

  BabelRegExp.prototype[Symbol.replace] = function (str, substitution) {
    if (typeof substitution === "string") {
      var groups = _groups.get(this);

      return _super[Symbol.replace].call(this, str, substitution.replace(/\$<([^>]+)>/g, function (_, name) {
        return "$" + groups[name];
      }));
    } else if (typeof substitution === "function") {
      var _this = this;

      return _super[Symbol.replace].call(this, str, function () {
        var args = [];
        args.push.apply(args, arguments);

        if (typeof args[args.length - 1] !== "object") {
          args.push(buildGroups(args, _this));
        }

        return substitution.apply(this, args);
      });
    } else {
      return _super[Symbol.replace].call(this, str, substitution);
    }
  };

  function buildGroups(result, re) {
    var g = _groups.get(re);

    return Object.keys(g).reduce(function (groups, name) {
      groups[name] = result[g[name]];
      return groups;
    }, Object.create(null));
  }

  return _wrapRegExp.apply(this, arguments);
}

// Numbers represent type - 
// 1:float 2:vec2 3:vec3 4:vec4
var geometryFunctions = {
  sphere: {
    args: [1]
  },
  line: {
    args: [3, 3, 1]
  },
  cone: {
    args: [1, 1]
  },
  roundCone: {
    args: [3, 3, 1, 1]
  },
  plane: {
    args: [1, 1, 1, 1]
  }
};
var mathFunctions = {
  nsin: {
    args: [1],
    ret: 1
  },
  ncos: {
    args: [1],
    ret: 1
  },
  round: {
    args: [1],
    ret: 1
  },
  hsv2rgb: {
    args: [3],
    ret: 3
  },
  rgb2hsv: {
    args: [3],
    ret: 3
  },
  rotateVec: {
    args: [3, 3, 1],
    ret: 3
  },
  toSpherical: {
    args: [3],
    ret: 3
  },
  fromSpherical: {
    args: [3],
    ret: 3
  },
  getRayDirection: {
    args: [],
    ret: 3
  },
  osc: {
    args: [1],
    ret: 1
  },
  _hash33: {
    args: [3],
    ret: 3
  },
  _hash13: {
    args: [3],
    ret: 1
  },
  noise: {
    args: [3],
    ret: 1
  },
  fractalNoise: {
    args: [3],
    ret: 1
  },
  sphericalDistribution: {
    args: [3, 1],
    ret: 4
  }
}; // these all have a single input/output and are overloaded for 
// all types so a list of names is all we need to generate them

var glslBuiltInOneToOne = ["sin", "cos", "tan", "asin", "acos", "exp", "log", "exp2", "log2", "sqrt", "inversesqrt", "abs", "sign", "floor", "ceil", "fract"]; // need better overloading system

var glslBuiltInOther = {
  // overload pow somehow?
  // pow: { args:[1,1], ret:1 },
  mod: {
    args: [1, 1],
    ret: 1
  },
  min: {
    args: [1, 1],
    ret: 1
  },
  max: {
    args: [1, 1],
    ret: 1
  },
  atan: {
    args: [1, 1],
    ret: 1
  },
  clamp: {
    args: [1, 1, 1],
    ret: 1
  },
  step: {
    args: [1, 1],
    ret: 1
  },
  smoothstep: {
    args: [1, 1, 1],
    ret: 1
  },
  // also overload length for vec3 and vec2?
  length: {
    args: [3],
    ret: 1
  },
  distance: {
    args: [3, 3],
    ret: 1
  },
  dot: {
    args: [3, 3],
    ret: 1
  },
  cross: {
    args: [3, 3],
    ret: 3
  },
  normalize: {
    args: [3],
    ret: 3
  },
  reflect: {
    args: [3, 3],
    ret: 3
  },
  refract: {
    args: [3, 3],
    ret: 3
  }
}; // let arg = {
//     'mix' : (a, b, c) => (a.dim === b.dim && (c.dim === 1 || c.dim === a.dim))? a.dim: -1,
// };

function convertFunctionToString(source) {
  if (typeof source === "function") {
    source = source.toString();
    return source.slice(source.indexOf("{") + 1, source.lastIndexOf("}"));
  } else if (!(typeof source === "string")) {
    throw "your Shader Park code requires the source code to be a function, or a string";
  }

  return source;
}

var commonjsGlobal = typeof globalThis !== 'undefined' ? globalThis : typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};

function getDefaultExportFromCjs (x) {
	return x && x.__esModule && Object.prototype.hasOwnProperty.call(x, 'default') ? x['default'] : x;
}

function getDefaultExportFromNamespaceIfPresent (n) {
	return n && Object.prototype.hasOwnProperty.call(n, 'default') ? n['default'] : n;
}

function getDefaultExportFromNamespaceIfNotNamed (n) {
	return n && Object.prototype.hasOwnProperty.call(n, 'default') && Object.keys(n).length === 1 ? n['default'] : n;
}

function getAugmentedNamespace(n) {
	if (n.__esModule) return n;
	var a = Object.defineProperty({}, '__esModule', {value: true});
	Object.keys(n).forEach(function (k) {
		var d = Object.getOwnPropertyDescriptor(n, k);
		Object.defineProperty(a, k, d.get ? d : {
			enumerable: true,
			get: function () {
				return n[k];
			}
		});
	});
	return a;
}

function createCommonjsModule(fn) {
  var module = { exports: {} };
	return fn(module, module.exports), module.exports;
}

function commonjsRequire (path) {
	throw new Error('Could not dynamically require "' + path + '". Please configure the dynamicRequireTargets or/and ignoreDynamicRequires option of @rollup/plugin-commonjs appropriately for this require call to work.');
}

var glslParser = createCommonjsModule(function (module, exports) {
  // Adapted from https://github.com/cimaron/cwebgl/blob/master/external/glsl2js/glsl.js

  /*
  Copyright (c) 2011 Cimaron Shanahan
  
  Permission is hereby granted, free of charge, to any person obtaining a copy of
  this software and associated documentation files (the "Software"), to deal in
  the Software without restriction, including without limitation the rights to
  use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
  the Software, and to permit persons to whom the Software is furnished to do so,
  subject to the following conditions:
  
  The above copyright notice and this permission notice shall be included in all
  copies or substantial portions of the Software.
  
  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
  FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
  COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
  IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
  (function () {
    /*
    Copyright (c) 2011 Cimaron Shanahan
    
    Permission is hereby granted, free of charge, to any person obtaining a copy of
    this software and associated documentation files (the "Software"), to deal in
    the Software without restriction, including without limitation the rights to
    use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
    the Software, and to permit persons to whom the Software is furnished to do so,
    subject to the following conditions:
    
    The above copyright notice and this permission notice shall be included in all
    copies or substantial portions of the Software.
    
    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
    FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
    COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
    IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
    CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
    */
    var glsl = {
      runParse: function runParse(src, options) {
        var state, result, irs;
        state = new GlslState(options);
        state.setSource(src); //Preprocess

        result = this.preprocessor.process(state); //Parse into AST

        if (result) {
          result = this.parser.parse(state);
        }
        /*
        //Generate IR
        if (result) {
        result = this.generate(state);
        }
        */


        if (result) {
          state.status = true;
        }

        return state;
      },

      /**
       * Compilation targets
       */
      target: {
        fragment: 0,
        'x-fragment': 0,
        'x-shader/x-fragment': 0,
        vertex: 1,
        'x-vertex': 1,
        'x-shader/x-vertex': 1
      }
    }; // Copyright Joyent, Inc. and other Node contributors.
    //
    // Permission is hereby granted, free of charge, to any person obtaining a
    // copy of this software and associated documentation files (the
    // "Software"), to deal in the Software without restriction, including
    // without limitation the rights to use, copy, modify, merge, publish,
    // distribute, sublicense, and/or sell copies of the Software, and to permit
    // persons to whom the Software is furnished to do so, subject to the
    // following conditions:
    //
    // The above copyright notice and this permission notice shall be included
    // in all copies or substantial portions of the Software.
    //
    // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
    // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
    // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
    // NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
    // DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
    // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
    // USE OR OTHER DEALINGS IN THE SOFTWARE.

    /**
     * Select node.js util functions
     */

    var util = {};

    (function (exports) {
      var formatRegExp = /%[sdj%]/g;

      exports.format = function (f) {
        if (!isString(f)) {
          var objects = [];

          for (var i = 0; i < arguments.length; i++) {
            objects.push(inspect(arguments[i]));
          }

          return objects.join(' ');
        }

        var i = 1;
        var args = arguments;
        var len = args.length;
        var str = String(f).replace(formatRegExp, function (x) {
          if (x === '%%') return '%';
          if (i >= len) return x;

          switch (x) {
            case '%s':
              return String(args[i++]);

            case '%d':
              return Number(args[i++]);

            case '%j':
              try {
                return JSON.stringify(args[i++]);
              } catch (_) {
                return '[Circular]';
              }

            default:
              return x;
          }
        });

        for (var x = args[i]; i < len; x = args[++i]) {
          //if (isNull(x) || !isObject(x)) {
          str += ' ' + x; //} else {
          //  str += ' ' + inspect(x);
          //}
        }

        return str;
      };

      function isString(arg) {
        return typeof arg === 'string';
      }

      exports.isString = isString;
      /**
       * Inherit the prototype methods from one constructor into another.
       *
       * The Function.prototype.inherits from lang.js rewritten as a standalone
       * function (not on Function.prototype). NOTE: If this file is to be loaded
       * during bootstrapping this function needs to be rewritten using some native
       * functions as prototype setup using normal JavaScript does not work as
       * expected during bootstrapping (see mirror.js in r114903).
       *
       * @param {function} ctor Constructor function which needs to inherit the
       * prototype.
       * @param {function} superCtor Constructor function to inherit prototype from.
       */

      exports.inherits = function (ctor, superCtor) {
        ctor.super_ = superCtor;
        ctor.prototype = Object.create(superCtor.prototype, {
          constructor: {
            value: ctor,
            enumerable: false,
            writable: true,
            configurable: true
          }
        });
      };
    })(util);
    /*
    Copyright (c) 2014 Cimaron Shanahan
    
    Permission is hereby granted, free of charge, to any person obtaining a copy of
    this software and associated documentation files (the "Software"), to deal in
    the Software without restriction, including without limitation the rights to
    use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
    the Software, and to permit persons to whom the Software is furnished to do so,
    subject to the following conditions:
    
    The above copyright notice and this permission notice shall be included in all
    copies or substantial portions of the Software.
    
    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
    FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
    COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
    IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
    CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
    */


    function GlslState(options) {
      var i;
      this.options = {
        target: 0,
        language_version: 100,
        opt: {
          fold_constants: true
        }
      };

      for (i in options) {
        this.options[i] = options[i];
      }

      this.symbols = new SymbolTable();
      symbol_table_init(this.symbols, options.target);
      this.status = false;
      this.translation_unit = "";
      this.ast = [];
      this.ir = null;
      this.errors = [];
      this.warnings = [];
    }

    proto = GlslState.prototype = {};
    /**
     * Get identifier type
     *
     * @param   object   state   GLSL state
     * @param   string   name    Identifier name
     * Add error to state
     *
     * @return  string
     * @param   string   msg      Message
     * @param   int      line     Message
     * @param   int      column   Message
     */

    proto.classify_identifier = function (state, name) {
      if (this.symbols.get_variable(name) || this.symbols.get_function(name)) {
        return 'IDENTIFIER';
      } else if (this.symbols.get_type(name)) {
        return 'TYPE_IDENTIFIER';
      } else {
        return 'NEW_IDENTIFIER';
      }
    };

    proto.setSource = function (src) {
      this.src = src;
    };

    proto.getSource = function () {
      return this.src;
    };

    proto.setTranslationUnit = function (tu) {
      this.translation_unit = tu;
    };

    proto.getTranslationUnit = function () {
      return this.translation_unit;
    };

    proto.addAstNode = function (node) {
      this.ast.push(node);
    };

    proto.getAst = function () {
      return this.ast;
    };

    proto.setIR = function (ir) {
      this.ir = ir;
    };

    proto.getIR = function () {
      return this.ir;
    };

    proto.getStatus = function () {
      return this.status;
    };
    /**
     * Add error to state
     *
     * @param   string   msg      Message
     * @param   int      line     Message
     * @param   int      column   Message
     */


    proto.addError = function (msg, line, column) {
      var err;

      if (!line && !column) {
        this.errors.push(msg);
        return;
      }

      err = util.format("%s at line %s, column %s", msg, line, column);
      this.errors.push(err);
    };
    /**
     * Add warning to state
     *
     * @param   string   msg      Message
     * @param   int      line     Message
     * @param   int      column   Message
     */


    proto.addWarning = function (msg, line, column) {
      var warn;

      if (!line && !column) {
        this.warnings.push(msg);
        return;
      }

      warn = util.format("%s at line %s, column %s", msg, line, column);
      this.warnings.push(warn);
    };
    /**
     * Get compile errors
     *
     * @return  mixed
     */


    proto.getErrors = function () {
      return this.errors;
    };
    /**
     * Get compile errors
     *
     * @return  mixed
     */


    proto.getWarnings = function () {
      return this.warnings;
    };
    /*
    Copyright (c) 2014 Cimaron Shanahan
    
    Permission is hereby granted, free of charge, to any person obtaining a copy of
    this software and associated documentation files (the "Software"), to deal in
    the Software without restriction, including without limitation the rights to
    use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
    the Software, and to permit persons to whom the Software is furnished to do so,
    subject to the following conditions:
    
    The above copyright notice and this permission notice shall be included in all
    copies or substantial portions of the Software.
    
    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
    FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
    COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
    IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
    CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
    */

    /**
     * Preprocessor Class
     */


    function Preprocessor() {}

    Preprocessor.modules = {};
    var proto = Preprocessor.prototype;

    proto.process = function (state) {
      var m,
          out = state.getSource();

      for (m in Preprocessor.modules) {
        try {
          out = Preprocessor.modules[m].process(out);
        } catch (e) {
          state.addError(e.message, e.lineNumber, e.columnNumber);
          return false;
        }
      }

      state.setTranslationUnit(out);
      return true;
    };

    glsl.preprocessor = new Preprocessor();
    /*
    Copyright (c) 2014 Cimaron Shanahan
    
    Permission is hereby granted, free of charge, to any person obtaining a copy of
    this software and associated documentation files (the "Software"), to deal in
    the Software without restriction, including without limitation the rights to
    use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
    the Software, and to permit persons to whom the Software is furnished to do so,
    subject to the following conditions:
    
    The above copyright notice and this permission notice shall be included in all
    copies or substantial portions of the Software.
    
    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
    FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
    COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
    IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
    CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
    */

    Preprocessor.modules.comments = {
      process: function process(src) {
        var i,
            chr,
            la,
            out = "",
            line = 1,
            in_single = 0,
            in_multi = 0;

        for (i = 0; i < src.length; i++) {
          chr = src.substr(i, 1);
          la = src.substr(i + 1, 1); //Enter single line comment

          if (chr == '/' && la == '/' && !in_single && !in_multi) {
            in_single = line;
            i++;
            continue;
          } //Exit single line comment


          if (chr == "\n" && in_single) {
            in_single = 0;
          } //Enter multi line comment


          if (chr == '/' && la == '*' && !in_multi && !in_single) {
            in_multi = line;
            i++;
            continue;
          } //Exit multi line comment


          if (chr == '*' && la == '/' && in_multi) {
            //Treat single line multi-comment as space
            if (in_multi == line) {
              out += " ";
            }

            in_multi = 0;
            i++;
            continue;
          } //Newlines are preserved


          if (!in_multi && !in_single || chr == "\n") {
            out += chr;
            line++;
          }
        }

        return out;
      }
    };
    /*
    Copyright (c) 2014 Cimaron Shanahan
    
    Permission is hereby granted, free of charge, to any person obtaining a copy of
    this software and associated documentation files (the "Software"), to deal in
    the Software without restriction, including without limitation the rights to
    use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
    the Software, and to permit persons to whom the Software is furnished to do so,
    subject to the following conditions:
    
    The above copyright notice and this permission notice shall be included in all
    copies or substantial portions of the Software.
    
    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
    FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
    COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
    IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
    CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
    */

    Preprocessor.modules.directives = {
      state: {
        lines: [],
        defines: {}
      },
      process: function process(src) {
        var i, l;
        this.state.lines = src.split("\n");
        this.state.defines = {
          GL_ES: '1',
          __FILE__: '0',
          __LINE__: '0',
          __VERSION__: '300'
        };
        this.state.cond_stack = [];
        i = 0;
        l = this.state.lines.length;

        while (i < l) {
          this.state.lines[i] = this.processLine(this.state.lines[i], i);
          i++;
        }

        return this.state.lines.join("\n");
      },
      processLine: function processLine(line, i) {
        var d, matches, raw, e, sub, cond;
        matches = line.match(/^([ \t]*)#(.*)$/);

        if (!matches) {
          if (this.state.cond_stack.length != 0 && !this.state.cond_stack.slice(-1)[0]) {
            return "";
          }

          line = this.processDefines(line, i);
          return line;
        }

        raw = matches[2];

        if (raw.match(/^\s*$/)) {
          return "";
        }

        var lmatches = raw.split(/\s+/);

        try {
          switch (lmatches[0]) {
            case 'define':
            case 'undef':
            case 'ifdef':
            case 'endif':
              this[lmatches[0]](line, lmatches);
              return "";
          }

          throw new Error("Invalid directive");
        } catch (e) {
          e.lineNumber = i + 1;
          e.columnNumber = matches[1].length + 1;
          throw e;
        }
      },
      processDefines: function processDefines(line, i) {
        this.state.defines.__LINE__ = i + 1;

        for (var d in this.state.defines) {
          //easy global replace
          line = line.split(d).join(this.state.defines[d]);
        }

        return line;
      },
      define: function define(line, matches) {
        if (matches.length <= 1 || matches.length > 3) {
          throw new Error("Syntax error in #define");
        }

        this.state.defines[matches[1]] = matches[2] || "";
      },
      undef: function undef(line, matches) {
        if (matches.length != 2) {
          throw new Error("Syntax error in #undef");
        }

        delete this.state.defines[matches[1]];
      },
      ifdef: function ifdef(line, matches) {
        var def;
        def = !!this.state.defines[matches[1]];
        this.state.cond_stack.push(def);
      },
      endif: function endif(line, matches) {
        if (this.state.cond_stack.length) {
          this.state.cond_stack.pop();
        } else {
          throw new Error("unmatched #endif");
        }
      }
    };
    /*
    Copyright (c) 2011 Cimaron Shanahan
    
    Permission is hereby granted, free of charge, to any person obtaining a copy of
    this software and associated documentation files (the "Software"), to deal in
    the Software without restriction, including without limitation the rights to
    use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
    the Software, and to permit persons to whom the Software is furnished to do so,
    subject to the following conditions:
    
    The above copyright notice and this permission notice shall be included in all
    copies or substantial portions of the Software.
    
    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
    FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
    COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
    IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
    CONNECTION WITH THE SOFTWARE OR THE USE		 OR OTHER DEALINGS IN THE SOFTWARE.
    */

    function Type(name, size, slots, base) {
      this.name = name;
      this.size = size;
      this.slots = slots;
      this.swizzle = size / slots != 4 ? "xyzw".slice(0, size / slots) : "";
      this.base = base || name;
    }
    /**
     * Do a cast on a constant
     *
     * @param   string   val    Value to cast
     * @param   string   from   From type
     * @param   string   to     To type
     *
     * @return  string
     */


    Type.castTo = function (val, from, to) {
      var f32;

      switch (to) {
        case 'int':
          return "" + parseInt(val);

        case 'float':
          //Should we keep maximum precision, or use the following to force to 32bit precision??

          /*
          f32 = new Float32Array(1);
          f32[0] = parseFloat(val);
          return "" + f32[0];
          */
          return "" + parseFloat(val);

        case 'bool':
          return parseFloat(val) ? "1" : "0";
      }

      return val;
    };
    /**
     * Determine if can cast from one type to another
     *
     * @param   string   from   From type
     * @param   string   to     To type
     *
     * @return  bool
     */


    Type.canCast = function (from, to) {
      var t1, t2;
      t1 = types[from];
      t2 = types[to];
      return t1.size === 1 && t2.size === 1;
    };

    var types = {
      _void: new Type("void", 1, 1),
      bool: new Type("bool", 1, 1),
      int: new Type("int", 1, 1),
      float: new Type("float", 1, 1),
      vec2: new Type("vec2", 2, 1, 'float'),
      vec3: new Type("vec3", 3, 1, 'float'),
      vec4: new Type("vec4", 4, 1, 'float'),
      bvec2: new Type("bvec2", 2, 1, 'bool'),
      bvec3: new Type("bvec3", 3, 1, 'bool'),
      bvec4: new Type("bvec4", 4, 1, 'bool'),
      ivec2: new Type("ivec2", 2, 1, 'int'),
      ivec3: new Type("ivec3", 3, 1, 'int'),
      ivec4: new Type("ivec4", 4, 1, 'int'),
      mat2: new Type("mat2", 4, 2, 'float'),
      mat3: new Type("mat3", 9, 3, 'float'),
      mat4: new Type("mat4", 16, 4, 'float'),
      sampler2D: new Type("sampler2D", 1, 1),
      samplerCube: new Type("samplerCube", 1, 1)
    }; //Compatibility

    types['void'] = types._void;
    /*
    Copyright (c) 2011 Cimaron Shanahan
    
    Permission is hereby granted, free of charge, to any person obtaining a copy of
    this software and associated documentation files (the "Software"), to deal in
    the Software without restriction, including without limitation the rights to
    use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
    the Software, and to permit persons to whom the Software is furnished to do so,
    subject to the following conditions:
    
    The above copyright notice and this permission notice shall be included in all
    copies or substantial portions of the Software.
    
    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
    FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
    COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
    IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
    CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
    */

    /**
     * SymbolTableEntry constructor
     */

    function SymbolTableEntry(name, typedef) {
      this.depth = null;
      this.typedef = typedef; //Variable name

      this.name = name; //Type

      this.type = null; //Base type (if array)

      this.base_type = null; //Function definition

      this.definition = []; //Qualifier

      this.qualifier = null; //IR name

      this.out = name; //Constant value

      this.constant = null; //Array size

      this.size = null; //Temp vars for IR generation

      this.code = null;
      this.Ast = null;
    }

    SymbolTableEntry.typedef = {
      variable: 0,
      func: 1,
      type: 2
    };

    SymbolTableEntry.prototype.getType = function () {
      return types[this.type];
    };
    /**
     * symbol_table constructor
     */


    function SymbolTable() {
      this.table = {};
      this.depth = 0;
    }

    SymbolTable.prototype = {};
    var proto = SymbolTable.prototype;
    /**
     * 
     */

    proto.push_scope = function () {
      this.depth++;
    };
    /**
     * 
     */


    proto.pop_scope = function () {
      var n, t;

      for (n in this.table) {
        if (this.table.hasOwnProperty(n)) {
          t = this.table[n];

          while (t[0] && t[0].depth === this.depth) {
            t.splice(0, 1);
          }

          if (t.length === 0) {
            delete this.table[n];
          }
        }
      }

      this.depth--;
    };
    /**
     * 
     */


    proto.name_declared_this_scope = function (name) {
      var e = this.get_entry(name);
      return e && e.depth === this.depth;
    };
    /**
     * 
     */


    proto.add_variable = function (name, type) {
      var entry = new SymbolTableEntry(name, SymbolTableEntry.typedef.variable);
      entry.type = type;
      return this._add_entry(entry);
    };
    /**
     * 
     */


    proto.add_type = function (name, t) {
      var entry = new SymbolTableEntry(name, SymbolTableEntry.typedef.type);
      entry.definition = t;
      return this._add_entry(entry);
    };
    /**
     * 
     */


    proto.add_function = function (name, type, def) {
      var entry;
      entry = new SymbolTableEntry(name, SymbolTableEntry.typedef.func);
      entry.type = type;

      if (def) {
        entry.definition = def;
      }

      return this._add_entry(entry);
    };
    /**
     * 
     */


    proto.get_variable = function (name) {
      var entry = this.get_entry(name, SymbolTableEntry.typedef.variable);
      return entry;
    };
    /**
     * 
     */


    proto.get_type = function (name) {
      var entry = this.get_entry(name, SymbolTableEntry.typedef.type);
      return entry;
    };
    /**
     * 
     */


    proto.get_function = function (name, def) {
      var entry = this.get_entry(name, SymbolTableEntry.typedef.func, def);
      return entry;
    };
    /**
     * @protected
     */


    proto._match_definition = function (def, entry) {
      var i;

      if (!def) {
        return true;
      }

      if (def.length !== entry.length) {
        return false;
      }

      for (i = 0; i < def.length; i++) {
        if (def[i] !== entry[i]) {
          return false;
        }
      }

      return true;
    };
    /**
     * @protected
     */


    proto._add_entry = function (entry) {
      if (!this.table[entry.name]) {
        this.table[entry.name] = [];
      }

      this.table[entry.name].splice(0, 0, entry);
      entry.depth = this.depth;
      return entry;
    };
    /**
     * @protected
     */


    proto.get_entry = function (name, typedef, def) {
      var t, i, entry;
      t = this.table[name] || []; //Look for 'void' instead of empty definition list

      if (def && def.length == 0) {
        def = ["void"];
      }

      for (i = 0; i < t.length; i++) {
        entry = t[i]; //Not type of variable we're looking for

        if (entry.typedef !== typedef) {
          continue;
        } //Normal variable


        if (typedef !== SymbolTableEntry.typedef.func) {
          return entry;
        } //Match any function definition


        if (!def) {
          return entry;
        } //Match specific function definition


        if (def.join(',') === entry.definition.join(',')) {
          return entry;
        }
      }

      return null;
    };
    /*
    Copyright (c) 2011 Cimaron Shanahan
    
    Permission is hereby granted, free of charge, to any person obtaining a copy of
    this software and associated documentation files (the "Software"), to deal in
    the Software without restriction, including without limitation the rights to
    use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
    the Software, and to permit persons to whom the Software is furnished to do so,
    subject to the following conditions:
    
    The above copyright notice and this permission notice shall be included in all
    copies or substantial portions of the Software.
    
    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
    FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
    COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
    IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
    CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
    */

    /**
     * Base class of all abstract syntax tree nodes
     */


    function AstNode() {
      //public:
      this.location = {
        first_line: 0,
        first_column: 0,
        last_line: 0,
        last_column: 0
      }; //The following are used during IR generation

      this.Dest = null;
      this.Type = null;
      this.Const = false;
    }

    var proto = AstNode.prototype; //public:

    proto.getLocation = function () {
      return this.location;
    };

    proto.setLocation = function (loc) {
      this.location.first_line = loc.first_line;
      this.location.first_column = loc.first_column;
      this.location.last_line = loc.last_line;
      this.location.last_column = loc.last_column;
    };
    /**
     * Return string representation of node
     *
     * @return  string
     */


    proto.toString = function () {
      return this.constructor.name;
    };

    proto.ir = function (state, irs) {//throw new Error("Missing ir generator for node of type " + this.constructor.name);
    }; //inverse of operators


    var ast_operators = ["=", "POS", "NEG", "+", "-", "*", "/", "%", "<<", ">>", "<", ">", "<=", ">=", "==", "!=", "&", "^", "|", "~", "&&", "^^", "||", "!", "*=", "/=", "%=", "+=", "-=", "<<=", ">>=", "&=", "^=", "|=", "?:", "++x", "--x", "x++", "x--", ".", "[]", "()", "ident", "float", "int", "bool"];
    var ast_precision = {
      none: 0,
      highp: 1,
      mediump: 2,
      lowp: 3
    };
    /**
     * AST Type Specifier Class
     */

    function AstTypeSpecifier(specifier) {
      AstNode.apply(this);
      this.type_specifier = null;
      this.type_name = null;
      this.structure = null;
      this.is_array = 0;
      this.array_size = null;
      this.precision = 2;
      this.is_precision_statement = null;

      if (AstTypeSpecifier[_typeof(specifier)]) {
        AstTypeSpecifier[_typeof(specifier)].call(this, specifier);
      }
    }

    util.inherits(AstTypeSpecifier, AstNode);
    proto = AstTypeSpecifier.prototype; //overloaded constructors

    AstTypeSpecifier.number = function (specifier) {
      this.type_specifier = specifier;
      this.precision = ast_precision.none;
      this.is_precision_statement = false;
      this.type_name = types[specifier].name;
    };

    AstTypeSpecifier.string = function (name) {
      this.type_specifier = types[name];
      this.type_name = name;
      this.is_array = false;
      this.precision = ast_precision.none;
      this.is_precision_statement = false;
    };

    AstTypeSpecifier.object = function (s) {
      this.type_specifier = types.struct;
      this.type_name = s.name;
      this.structure = s;
      this.is_array = false;
      this.precision = ast_precision.none;
      this.is_precision_statement = false;
    };
    /**
     * Return string representation of node
     *
     * @return  string
     */


    proto.toString = function () {
      var i, prec;

      if (this.is_precision_statement) {
        for (i in ast_precision) {
          if (ast_precision.hasOwnProperty(i) && ast_precision[i] === this.precision) {
            prec = i;
            break;
          }
        }

        return util.format("precision %s %s;\n", prec, this.type_name);
      }

      return (this.type_specifier === types.struct ? this.structure : this.type_name) + (this.is_array ? util.format("[%s]", this.array_size || "") : "");
    };
    /**
     * AST Function Class
     */


    function AstFunction() {
      AstNode.apply(this);
      this.return_type = null;
      this.identifier = null;
      this.parameters = [];
      this.entry = null;
    }

    util.inherits(AstFunction, AstNode);
    proto = AstFunction.prototype;
    /**
     * Return string representation of node
     *
     * @return  string
     */

    proto.toString = function () {
      return util.format("%s %s(%s)", this.return_type, this.identifier, this.parameters.join(", "));
    };
    /**
     * AST Expression Class
     */


    function AstExpression(oper, ex0, ex1, ex2) {
      AstNode.apply(this);
      this.oper = oper;
      this.grouped = false;
      this.subexpressions = [null, null, null];
      this.primary_expression = {};
      this.expressions = [];

      if (ast_operators.indexOf(this.oper) === -1) {
        this.oper = 'ident';
        this.primary_expression.identifier = oper;
      } else {
        this.subexpressions[0] = ex0;
        this.subexpressions[1] = ex1;
        this.subexpressions[2] = ex2;
      }
    }

    util.inherits(AstExpression, AstNode);
    proto = AstExpression.prototype;
    /**
     * Return string representation of node
     *
     * @return  string
     */

    proto.toString = function () {
      var output;

      switch (this.oper) {
        case '=':
        case '+':
        case '-':
        case '*':
        case '/':
        case '%':
        case "<<":
        case ">>":
        case "<":
        case ">":
        case "<=":
        case ">=":
        case "==":
        case "!=":
        case "&":
        case "^":
        case "|":
        case "~":
        case "&&":
        case "^^":
        case "||":
        case '*=':
        case '/=':
        case '%=':
        case '+=':
        case '-=':
        case '<<=':
        case '>>=':
        case '&=':
        case '^=':
        case '|=':
          output = util.format("%s %s %s", this.subexpressions[0], this.oper, this.subexpressions[1]);
          break;

        case '.':
          output = util.format("%s.%s", this.subexpressions[0], this.primary_expression.identifier);
          break;

        case 'POS':
          output = util.format("+%s", this.subexpressions[0]);
          break;

        case 'NEG':
          output = util.format("-%s", this.subexpressions[0]);
          break;

        case '~':
        case '!':
          output = util.format("%s%s", this.oper, this.subexpressions[0]);
          break;

        case '++x':
        case '--x':
          output = util.format("%s%s", this.oper.replace('x', ''), this.subexpressions[0]);
          break;

        case 'x++':
        case 'x--':
          output = util.format("%s%s", this.subexpressions[0], this.oper.replace('x', ''));
          break;

        case '?:':
          output = util.format("%s ? %s : %s", this.subexpressions[0], this.subexpressions[1], this.subexpressions[2]);
          break;

        case '[]':
          output = util.format("%s[%s]", this.subexpressions[0], this.subexpressions[1]);
          break;

        case '()':
          output = util.format("%s(%s)", this.subexpressions[0], this.expressions.join(", "));
          break;

        case 'ident':
          output = util.format("%s", this.primary_expression.identifier);
          break;

        case 'float':
          output = util.format("%s", this.primary_expression.float_constant);
          break;

        case 'int':
          output = util.format("%s", this.primary_expression.int_constant);
          break;

        case 'bool':
          output = util.format("%s", this.primary_expression.bool_constant ? 'true' : 'false');
          break;
      }

      return this.grouped ? util.format("(%s)", output) : output;
    };
    /**
     * AST Fully Specified Type Class
     */


    function AstFullySpecifiedType() {
      AstNode.apply(this);
      this.qualifier = [];
      this.specifier = null;
    }

    util.inherits(AstFullySpecifiedType, AstNode);
    proto = AstFullySpecifiedType.prototype;
    /**
     * Return string representation of node
     *
     * @return  string
     */

    proto.toString = function () {
      var output;
      output = this.qualifier.slice(0);
      output.push(this.specifier);
      return output.join(' ');
    };
    /**
     * AST Declaration Class
     */


    function AstDeclaration(identifier, is_array, array_size, initializer) {
      AstNode.apply(this);
      this.identifier = identifier;
      this.is_array = is_array;
      this.array_size = array_size;
      this.initializer = initializer;
    }

    util.inherits(AstDeclaration, AstNode);
    proto = AstDeclaration.prototype;
    /**
     * Return string representation of node
     *
     * @return  string
     */

    proto.toString = function () {
      return this.identifier + (this.is_array ? util.format("[%s]", this.array_size === undefined ? '' : this.array_size) : '') + (this.initializer ? util.format(" = %s", this.initializer) : "");
    };
    /**
     * AST Declarator List Class
     */


    function AstDeclaratorList(type) {
      AstNode.apply(this);
      this.type = type;
      this.declarations = [];
      this.invariant = 0;
    }

    util.inherits(AstDeclaratorList, AstNode);
    proto = AstDeclaratorList.prototype;
    /**
     * Return string representation of node
     *
     * @return  string
     */

    proto.toString = function () {
      return util.format("%s %s;\n", this.type || "invariant ", this.declarations.join(", "));
    };
    /**
     * AST Parameter Declarator Class
     */


    function AstParameterDeclarator() {
      AstNode.apply(this);
      this.type = null;
      this.identifier = null;
      this.is_array = false;
      this.array_size = 0;
      this.formal_parameter = null;
      this.is_void = null;
    }

    util.inherits(AstParameterDeclarator, AstNode);
    proto = AstParameterDeclarator.prototype;
    /**
     * Return string representation of node
     *
     * @return  string
     */

    proto.toString = function () {
      return this.type + (this.identifier ? " " + this.identifier : "") + (this.is_array ? util.format("[%s]", this.array_size) : "");
    };
    /**
     * AST Expression Statement Class
     */


    function AstExpressionStatement(ex) {
      AstNode.apply(this);
      this.expression = ex;
    }

    util.inherits(AstExpressionStatement, AstNode);
    proto = AstExpressionStatement.prototype;
    /**
     * Return string representation of node
     *
     * @return  string
     */

    proto.toString = function () {
      return util.format("%s;\n", this.expression || "");
    };
    /**
     * AST Compound Statement Class
     */


    function AstCompoundStatement(new_scope, statements) {
      AstNode.apply(this);
      this.new_scope = new_scope;

      if (statements) {
        this.statements = statements;
      } else {
        this.statements = [];
      }
    }

    util.inherits(AstCompoundStatement, AstNode);
    proto = AstCompoundStatement.prototype;
    /**
     * Return string representation of node
     *
     * @return  string
     */

    proto.toString = function () {
      var str, stmts, indent;
      AstCompoundStatement._depth++;
      indent = new Array(AstCompoundStatement._depth).join("  ");
      stmts = indent + "  " + this.statements.join(indent + "  ");
      str = "\n" + indent + "{\n" + stmts + indent + "}\n";
      AstCompoundStatement._depth--;
      return str;
    }; //Used for toString indentation


    AstCompoundStatement._depth = 0;
    /**
     * AST Function Definition Class
     */

    function AstFunctionDefinition() {
      AstNode.apply(this);
      this.proto_type = null;
      this.body = null;
    }

    util.inherits(AstFunctionDefinition, AstNode);
    proto = AstFunctionDefinition.prototype;
    /**
     * Return string representation of node
     *
     * @return  string
     */

    proto.toString = function () {
      return util.format("%s %s", this.proto_type, this.body);
    };
    /**
     * AST Function Definition Class
     */


    function AstExpressionBin(oper, ex0, ex1) {
      AstExpression.apply(this, [oper, ex0, ex1]);
    }

    util.inherits(AstExpressionBin, AstExpression);
    proto = AstExpressionBin.prototype;
    /**
     * AST Function Expression Class
     */

    function AstFunctionExpression(arg) {
      AstExpression.apply(this);
      this.cons = false;

      if (arg.constructor.name === 'AstExpression') {
        this.cons = false;
        AstExpression.call(this, '()', arg);
      } else if (arg.constructor.name === 'AstTypeSpecifier') {
        this.cons = true;
        AstExpression.call(this, '()', arg);
      }
    }

    util.inherits(AstFunctionExpression, AstExpression);
    proto = AstFunctionExpression.prototype;

    proto.is_constructor = function () {
      return this.cons;
    };

    proto.toString = function () {
      return util.format("%s(%s)", this.subexpressions[0], this.expressions.join(", "));
    };
    /**
     * AST Selection Statement Class
     */


    function AstSelectionStatement(condition, then_statement, else_statement) {
      AstNode.apply(this);
      this.condition = condition;
      this.then_statement = then_statement;
      this.else_statement = else_statement;
    }

    util.inherits(AstSelectionStatement, AstNode);
    proto = AstSelectionStatement.prototype;
    /**
     * Return string representation of node
     *
     * @return  string
     */

    proto.toString = function () {
      return util.format("if (%s) %s %s", this.condition, this.then_statement, this.else_statement ? util.format("else %s", this.else_statement) : "");
    };
    /**
     * AST Struct Specifier Class
     */


    function AstStructSpecifier(identifier, declarator_list) {
      AstNode.apply(this);
      this.name = null;
      this.declarations = [];

      if (identifier === null) {
        identifier = util.format("#anon_struct%d", AstStructSpecifier.anon_count);
        AstStructSpecifier.anon_count++;
      }

      this.name = identifier;
      this.declarations = declarator_list.declarations;
    }

    AstStructSpecifier.anon_count = 1;
    util.inherits(AstStructSpecifier, AstNode);
    proto = AstStructSpecifier.prototype;
    /**
     * AST Jump 
     */

    function AstJumpStatement(mode, return_value) {
      AstNode.apply(this);
      this.opt_return_value = null;
      this.mode = mode;

      if (mode === 'return') {
        this.opt_return_value = return_value;
      }
    }

    util.inherits(AstJumpStatement, AstNode);
    proto = AstJumpStatement.prototype;
    /**
     * Return string representation of node
     *
     * @return  string
     */

    proto.toString = function () {
      switch (this.mode) {
        case 'continue':
        case 'break':
        case 'discard':
        case 'debugger':
          return this.mode + ";\n";

        case 'return':
          return util.format("return%s;\n", this.opt_return_value ? " " + this.opt_return_value : "");
      }
    };

    glsl.ast = {
      Node: AstNode,
      TypeSpecifier: AstTypeSpecifier,
      Function: AstFunction,
      Expression: AstExpression,
      FullySpecifiedType: AstFullySpecifiedType,
      Declaration: AstDeclaration,
      DeclaratorList: AstDeclaratorList,
      ParameterDeclarator: AstParameterDeclarator,
      ExpressionStatement: AstExpressionStatement,
      CompoundStatement: AstCompoundStatement,
      FunctionDefinition: AstFunctionDefinition,
      ExpressionBin: AstExpressionBin,
      FunctionExpression: AstFunctionExpression,
      SelectionStatement: AstSelectionStatement,
      StructSpecifier: AstStructSpecifier,
      JumpStatement: AstJumpStatement
    };
    /*
    Copyright (c) 2011 Cimaron Shanahan
    
    Permission is hereby granted, free of charge, to any person obtaining a copy of
    this software and associated documentation files (the "Software"), to deal in
    the Software without restriction, including without limitation the rights to
    use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
    the Software, and to permit persons to whom the Software is furnished to do so,
    subject to the following conditions:
    
    The above copyright notice and this permission notice shall be included in all
    copies or substantial portions of the Software.
    
    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
    FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
    COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
    IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
    CONNECTION WITH THE SOFTWARE OR THE USE		 OR OTHER DEALINGS IN THE SOFTWARE.
    */

    var builtin = {
      vars: {
        vertex: [{
          position: 0,
          type: 'vec4',
          name: 'gl_Position',
          out: 'result@0'
        }, {
          position: 1,
          type: 'float',
          name: 'gl_PointSize',
          out: 'result@1'
        }],
        fragment: [{
          position: 0,
          type: 'vec4',
          name: 'gl_FragColor',
          out: 'result@0'
        }]
      },

      /**
       * List of instructions for operators
       * 
       * Denoted by operator, then by definition of param types to output type
       */
      oper: {
        "!": {
          "bool:bool": ["SEQ %1.x %2.x 0.0"]
        },
        "+": {
          "int,int:int": ["ADD %1.x %2.x %3.x"],
          "float,float:float": ["ADD %1.x %2.x %3.x"],
          "float,vec2:vec2": ["ADD %1.xy %2.x %3.xy"],
          "float,vec3:vec3": ["ADD %1.xyz %2.x %3.xyz"],
          "float,vec4:vec4": ["ADD %1 %2.x %3"],
          "vec2,float:vec2": ["ADD %1.xy %2.xy %3.x"],
          "vec3,float:vec3": ["ADD %1.xyz %2.xyz %3.x"],
          "vec4,float:vec4": ["ADD %1 %2 %3.x"],
          "vec2,vec2:vec2": ["ADD %1.xy %2.xy %3.xy"],
          "vec3,vec3:vec3": ["ADD %1.xyz %2.xyz %3.xyz"],
          "vec4,vec4:vec4": ["ADD %1 %2 %3"]
        },
        "-": {
          "int,int:int": ["SUB %1.x %2.x %3.x"],
          "float,float:float": ["SUB %1.x %2.x %3.x"],
          "float,vec2:vec2": ["SUB %1.xy %2.x %3.xy"],
          "float,vec3:vec3": ["SUB %1.xyz %2.x %3.xyz"],
          "float,vec4:vec4": ["SUB %1 %2.x %3"],
          "vec2,float:vec2": ["SUB %1.xy %2.xy %3.x"],
          "vec3,float:vec3": ["SUB %1.xyz %2.xyz %3.x"],
          "vec4,float:vec4": ["SUB %1 %2 %3.x"],
          "vec2,vec2:vec2": ["SUB %1.xy %2.xy %3.xy"],
          "vec3,vec3:vec3": ["SUB %1.xyz %2.xyz %3.xyz"],
          "vec4,vec4:vec4": ["SUB %1 %2 %3"]
        },
        "*": {
          "int,int:int": ["MUL %1.x %2.x %3.x"],
          "float,float:float": ["MUL %1.x %2.x %3.x"],
          "float,vec2:vec2": ["MUL %1.xy %2.x %3.xy"],
          "float,vec3:vec3": ["MUL %1.xyz %2.x %3.xyz"],
          "float,vec4:vec4": ["MUL %1 %2.x %3"],
          "vec2,float:vec2": ["MUL %1.xy %2.xy %3.x"],
          "vec3,float:vec3": ["MUL %1.xyz %2.xyz %3.x"],
          "vec4,float:vec4": ["MUL %1 %2 %3.x"],
          "vec2,vec2:vec2": ["MUL %1.xy %2.xy %3.xy"],
          "vec3,vec3:vec3": ["MUL %1.xyz %2.xyz %3.xyz"],
          "vec4,vec4:vec4": ["MUL %1 %2 %3"],
          "mat3,vec3:vec3": ["MUL %1.xyz %2.xyz %3.x", "MAD %1.xyz %2@1.xyz %3.y %1", "MAD %1.xyz %2@2.xyz %3.z %1"],
          "mat4,vec4:vec4": ["MUL %1 %2 %3.x", "MAD %1 %2@1 %3.y %1", "MAD %1 %2@2 %3.z %1", "MAD %1 %2@3 %3.w %1"],
          "mat4,mat4:mat4": ["MUL %1 %2 %3.x", "MAD %1 %2@1 %3.y %1", "MAD %1 %2@2 %3.z %1", "MAD %1 %2@3 %3.w %1", "MUL %1@1 %2 %3@1.x", "MAD %1@1 %2@1 %3@1.y %1@1", "MAD %1@1 %2@2 %3@1.z %1@1", "MAD %1@1 %2@3 %3@1.w %1@1", "MUL %1@2 %2 %3@2.x", "MAD %1@2 %2@1 %3@2.y %1@2", "MAD %1@2 %2@2 %3@2.z %1@2", "MAD %1@2 %2@3 %3@2.w %1@2", "MUL %1@3 %2 %3@3.x", "MAD %1@3 %2@1 %3@3.y %1@3", "MAD %1@3 %2@2 %3@3.z %1@3", "MAD %1@3 %2@3 %3@3.w %1@3"]
        },
        "/": {
          "int,int:int": ["DIV %1.x %2.x %3.x"],
          "float,float:float": ["DIV %1.x %2.x %3.x"],
          "float,vec2:vec2": ["DIV %1.xy %2.x %3.xy"],
          "float,vec3:vec3": ["DIV %1.xyz %2.x %3.xyz"],
          "float,vec4:vec4": ["DIV %1 %2.x %3"],
          "vec2,float:vec2": ["DIV %1.xy %2.xy %3.x"],
          "vec3,float:vec3": ["DIV %1.xyz %2.xyz %3.x"],
          "vec4,float:vec4": ["DIV %1 %2 %3.x"],
          "vec2,vec2:vec2": ["DIV %1.xy %2.xy %3.xy"],
          "vec3,vec3:vec3": ["DIV %1.xyz %2.xyz %3.xyz"],
          "vec4,vec4:vec4": ["DIV %1 %2 %3"]
        },
        "<": {
          "int,int:bool": ["SLT %1.x %2.x %3.x"],
          "float,float:bool": ["SLT %1.x %2.x %3.x"]
        },
        ">": {
          "int,int:bool": ["SGT %1.x %2.x %3.x"],
          "float,float:bool": ["SGT %1.x %2.x %3.x"]
        },
        "<=": {
          "int,int:bool": ["SLE %1.x %2.x %3.x"],
          "float,float:bool": ["SLE %1.x %2.x %3.x"]
        },
        ">=": {
          "int,int:bool": ["SGE %1.x %2.x %3.x"],
          "float,float:bool": ["SGE %1.x %2.x %3.x"]
        },
        "==": {
          "int,int:bool": ["SEQ %1.x %2.x %3.x"],
          "float,float:bool": ["SEQ %1.x %2.x %3.x"]
        },
        "!=": {
          "int,int:bool": ["SNE %1.x %2.x %3.x"],
          "float,float:bool": ["SNE %1.x %2.x %3.x"]
        },
        "&&": {
          "bool,bool:bool": ["AND %1.x %2.x %3.x", "AND %1.x %1.x 1"]
        },
        "^^": {
          "bool,bool:bool": ["XOR %1.x %2.x %3.x", "AND %1.x %1.x 1"]
        },
        "||": {
          "bool,bool:bool": ["OR %1.x %2.x %3.x", "AND %1.x %1.x 1"]
        }
      },

      /**
       * List of instructions for built in functions
       * 
       * Denoted by function name, then by definition of param types to output type
       */
      func: {
        "abs": {
          "float:float": ["ABS %1.x %2.x"],
          "vec2:vec2": ["ABS %1.xy %2.xy"],
          "vec3:vec3": ["ABS %1.xyz %2.xyz"],
          "vec4:vec4": ["ABS %1 %2"]
        },
        "ceil": {
          "float:float": ["CEIL %1.x %2.x"],
          "vec2:vec2": ["CEIL %1.xy %2.xy"],
          "vec3:vec3": ["CEIL %1.xyz %2.xyz"],
          "vec4:vec4": ["CEIL %1 %2"]
        },
        "clamp": {
          "float,float,float:float": ["MAX %1.x %2.x %3.x", "MIN %1.x %1.x %4.x"],
          "vec2,float,float:vec2": ["MAX %1.xy %2.xy %3.x", "MIN %1.xy %1.xy %4.x"],
          "vec3,float,float:vec3": ["MAX %1.xyz %2.xyz %3.x", "MIN %1.xyz %1.xyz %4.x"],
          "vec4,float,float:vec4": ["MAX %1 %2 %3.x", "MIN %1 %1 %4.x"],
          "vec2,vec2,vec2:vec2": ["MAX %1.xy %2.xy %3.xy", "MIN %1.xy %1.xy %4.xy"],
          "vec3,vec3,vec3:vec3": ["MAX %1.xyz %2.xyz %3.xyz", "MIN %1.xyz %1.xyz %4.xyz"],
          "vec4,vec4,vec4:vec4": ["MAX %1 %2 %3", "MIN %1 %1 %4"]
        },
        "cos": {
          "float:float": ["COS %1.x %2.x"],
          "vec2:vec2": ["COS %1.xy %2.xy"],
          "vec3:vec3": ["COS %1.xyz %2.xyz"],
          "vec4:vec4": ["COS %1 %2"]
        },
        "degrees": {
          "float:float": ["MUL %1.x %2.x " + 180 / Math.PI],
          "vec2:vec2": ["MUL %1.xy %2.xy " + 180 / Math.PI],
          "vec3:vec3": ["MUL %1.xyz %2.xyz " + 180 / Math.PI],
          "vec4:vec4": ["MUL %1 %2 " + 180 / Math.PI]
        },
        "dot": {
          "vec2,vec2:float": ["DP2 %1.x %2.xy %3.xy"],
          "vec3,vec3:float": ["DP3 %1.x %2.xyz %3.xyz"],
          "vec4,vec4:float": ["DP4 %1.x %2 %3"]
        },
        "floor": {
          "float:float": ["FLR %1.x %2.x"],
          "vec2:vec2": ["FLR %1.xy %2.xy"],
          "vec3:vec3": ["FLR %1.xyz %2.xyz"],
          "vec4:vec4": ["FLR %1 %2"]
        },
        "fract": {
          "float:float": ["FRC %1.x %2.x"],
          "vec2:vec2": ["FRC %1.xy %2.xy"],
          "vec3:vec3": ["FRC %1.xyz %2.xyz"],
          "vec4:vec4": ["FRC %1 %2"]
        },
        "max": {
          "float,float:float": ["MAX %1.x %2.x %3.x"],
          "vec2,float:vec2": ["MAX %1.xy %2.xy %3.x"],
          "vec3,float:vec3": ["MAX %1.xyz %2.xyz %3.x"],
          "vec4,float:vec4": ["MAX %1 %2 %3.x"],
          "vec2,vec2:vec2": ["MAX %1.xy %2.xy %3.xy"],
          "vec3,vec3:vec3": ["MAX %1.xyz %2.xyz %3.xyz"],
          "vec4,vec4:vec4": ["MAX %1 %2 %3"]
        },
        "min": {
          "float,float:float": ["MIN %1.x %2.x %3.x"],
          "vec2,float:vec2": ["MIN %1.xy %2.xy %3.x"],
          "vec3,float:vec3": ["MIN %1.xyz %2.xyz %3.x"],
          "vec4,float:vec4": ["MIN %1 %2 %3.x"],
          "vec2,vec2:vec2": ["MIN %1.xy %2.xy %3.xy"],
          "vec3,vec3:vec3": ["MIN %1.xyz %2.xyz %3.xyz"],
          "vec4,vec4:vec4": ["MIN %1 %2 %3"]
        },
        "mix": {
          "float,float,float:float": ["MAD %1.x -%2.x %4.x %2.x", "MAD %1.x %3.x %4.x %1.x"],
          "vec2,vec2,float:vec2": ["MAD %1.xy -%2.xy %4.x %2.xy", "MAD %1.xy %3.xy %4.x %1.xy"],
          "vec3,vec3,float:vec3": ["MAD %1.xyz -%2.xyz %4.x %2.xyz", "MAD %1.xyz %3.xyz %4.x %1.xyz"],
          "vec4,vec4,float:vec4": ["MAD %1 -%2 %4.x %2", "MAD %1 %3 %4.x %1"],
          "vec2,vec2,vec2:vec2": ["MAD %1.xy -%2.xy %4.xy %2.xy", "MAD %1.xy %3.xy %4.xy %1.xy"],
          "vec3,vec3,vec3:vec3": ["MAD %1.xyz -%2.xyz %4.xyz %2.xyz", "MAD %1.xyz %3.xyz %4.xyz %1.xyz"],
          "vec4,vec4,vec4:vec4": ["MAD %1 -%2 %4 %2", "MAD %1 %3 %4 %1"]
        },
        "mod": {
          "float,float:float": ["MOD %1.x %2.x %3.x"],
          "vec2,float:vec2": ["MOD %1.xy %2.xy %3.x"],
          "vec3,float:vec3": ["MOD %1.xyz %2.xyz %3.x"],
          "vec4,float:vec4": ["MOD %1 %2 %3.x"],
          "vec2,vec2:vec2": ["MOD %1.xy %2.xy %3.xy"],
          "vec3,vec3:vec3": ["MOD %1.xyz %2.xyz %3.xyz"],
          "vec4,vec4:vec4": ["MOD %1 %2 %3"]
        },
        "normalize": {
          "vec3:vec3": ["DP3 %1.x %2 %2", "RSQ %1.x %1.x", "MUL %1.xyz %2.xyz %1.x"],
          "vec4:vec4": ["DP4 %1.x %2 %2", "RSQ %1.x %1.x", "MUL %1 %2 %1.x"]
        },
        "pow": {
          "float,float:float": ["POW %1.x %2.x %3.x"]
        },
        "reflect": {
          "vec3,vec3:vec3": ["DP3 %1.x %3 %2", "MUL %1.xyz %3 %1.x", "MAD %1.xyz -%1 2.0 %2"]
        },
        "radians": {
          "float:float": ["MUL %1.x %2.x " + Math.PI / 180],
          "vec2:vec2": ["MUL %1.xy %2.xy " + Math.PI / 180],
          "vec3:vec3": ["MUL %1.xyz %2.xyz " + Math.PI / 180],
          "vec4:vec4": ["MUL %1 %2 " + Math.PI / 180]
        },
        "sign": {
          "float:float": ["SGT %t1.x %2.x 0", "SLT %t1.y %2.x 0", "ADD %1.x %t1.x -%t1.y"],
          "vec2:vec2": ["SGT %t1.xy %2.xy 0", "SLT %t1.zw %2.zw 0", "ADD %1.xy %t1.xy -%t1.zw"],
          "vec3:vec3": ["SGT %t1.xyz %2.xyz 0", "SLT %t2.xyz %2.xyz 0", "ADD %1.xyz %t1.xyz -%t2.xyz"],
          "vec4:vec4": ["SGT %t1 %2 0", "SLT %t2 %2 0", "ADD %1 %t1 -%t2"]
        },
        "sin": {
          "float:float": ["SIN %1.x %2.x"],
          "vec2:vec2": ["SIN %1.xy %2.xy"],
          "vec3:vec3": ["SIN %1.xyz %2.xyz"],
          "vec4:vec4": ["SIN %1 %2"]
        },
        "step": {
          "float,float:float": ["SGE %1.x %3.x %2.x"],
          "float,vec2:vec2": ["SGE %1.xy %3.x %2.xy"],
          "float,vec3:vec3": ["SGE %1.xyz %3.x %2.xyz"],
          "float,vec4:vec4": ["SGE %1 %3.x %2"],
          "vec2,vec2:vec2": ["SGE %1.xy %3.xy %2.xy"],
          "vec3,vec3:vec3": ["SGE %1.xyz %3.xyz %2.xyz"],
          "vec4,vec4:vec4": ["SGE %1 %3 %3"]
        },
        "tan": {
          "float:float": ["TAN %1.x %2.x"],
          "vec2:vec2": ["TAN %1.xy %2.xy"],
          "vec3:vec3": ["TAN %1.xyz %2.xyz"],
          "vec4:vec4": ["TAN %1 %2"]
        },
        "texture2D": {
          "sampler2D,vec2:vec4": ["TEX %1 %3 %2 \"2D\""]
        }
      }
    };

    function _builtinParseType(str) {
      var parts, ret;
      parts = str.split(":");
      parts[0] = parts[0].split(",");
      ret = {
        src: parts[0],
        dest: parts[1]
      };
      return ret;
    }

    function symbol_table_init(table, target) {
      var i, j, vars, v, entry, types, name;
      vars = target === glsl.target.vertex ? builtin.vars.vertex : builtin.vars.fragment;

      for (i = 0; i < vars.length; i++) {
        v = vars[i];
        entry = table.add_variable(v.name, v.type);
        entry.position = v.position;
        entry.out = v.out;
      }

      vars = builtin.func;

      for (name in vars) {
        v = vars[name];

        for (j in v) {
          types = _builtinParseType(j);
          entry = table.add_function(name, types.dest, types.src);
          entry.code = v[j];
        }
      }
    }
    /* parser generated by jison 0.4.15 */

    /*
      Returns a Parser object of the following structure:
    
      Parser: {
        yy: {}
      }
    
      Parser.prototype: {
        yy: {},
        trace: function(),
        symbols_: {associative list: name ==> number},
        terminals_: {associative list: number ==> name},
        productions_: [...],
        performAction: function anonymous(yytext, yyleng, yylineno, yy, yystate, $$, _$),
        table: [...],
        defaultActions: {...},
        parseError: function(str, hash),
        parse: function(input),
    
        lexer: {
            EOF: 1,
            parseError: function(str, hash),
            setInput: function(input),
            input: function(),
            unput: function(str),
            more: function(),
            less: function(n),
            pastInput: function(),
            upcomingInput: function(),
            showPosition: function(),
            test_match: function(regex_match_array, rule_index),
            next: function(),
            lex: function(),
            begin: function(condition),
            popState: function(),
            _currentRules: function(),
            topState: function(),
            pushState: function(condition),
    
            options: {
                ranges: boolean           (optional: true ==> token location info will include a .range[] member)
                flex: boolean             (optional: true ==> flex-like lexing behaviour where the rules are tested exhaustively to find the longest match)
                backtrack_lexer: boolean  (optional: true ==> lexer regexes are tested in order and for each matching regex the action code is invoked; the lexer terminates the scan when a token is returned by the action code)
            },
    
            performAction: function(yy, yy_, $avoiding_name_collisions, YY_START),
            rules: [...],
            conditions: {associative list: name ==> set},
        }
      }
    
    
      token location info (@$, _$, etc.): {
        first_line: n,
        last_line: n,
        first_column: n,
        last_column: n,
        range: [start_number, end_number]       (where the numbers are indexes into the input string, regular zero-based)
      }
    
    
      the parseError function receives a 'hash' object with these members for lexer and parser errors: {
        text:        (matched text)
        token:       (the produced terminal token, if any)
        line:        (yylineno)
      }
      while parser (grammar) errors will also provide these members, i.e. parser errors deliver a superset of attributes: {
        loc:         (yylloc)
        expected:    (string describing the set of expected tokens)
        recoverable: (boolean: TRUE when the parser has a error recovery rule available for this particular error)
      }
    */


    var parser = function () {
      var o = function o(k, v, _o, l) {
        for (_o = _o || {}, l = k.length; l--; _o[k[l]] = v) {
          ;
        }

        return _o;
      },
          $V0 = [13, 14, 15, 16, 17, 21, 22, 47, 108, 120, 121, 125, 128, 132, 133, 134, 135, 137, 138, 139, 140, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169],
          $V1 = [1, 18],
          $V2 = [1, 19],
          $V3 = [1, 20],
          $V4 = [1, 21],
          $V5 = [1, 22],
          $V6 = [1, 53],
          $V7 = [1, 54],
          $V8 = [1, 17],
          $V9 = [1, 44],
          $Va = [1, 45],
          $Vb = [1, 28],
          $Vc = [1, 47],
          $Vd = [1, 48],
          $Ve = [1, 49],
          $Vf = [1, 50],
          $Vg = [1, 40],
          $Vh = [1, 41],
          $Vi = [1, 42],
          $Vj = [1, 43],
          $Vk = [1, 46],
          $Vl = [1, 55],
          $Vm = [1, 56],
          $Vn = [1, 57],
          $Vo = [1, 58],
          $Vp = [1, 59],
          $Vq = [1, 60],
          $Vr = [1, 61],
          $Vs = [1, 62],
          $Vt = [1, 63],
          $Vu = [1, 64],
          $Vv = [1, 65],
          $Vw = [1, 66],
          $Vx = [1, 67],
          $Vy = [1, 68],
          $Vz = [1, 69],
          $VA = [1, 70],
          $VB = [1, 71],
          $VC = [1, 72],
          $VD = [1, 73],
          $VE = [1, 74],
          $VF = [1, 75],
          $VG = [1, 76],
          $VH = [1, 37],
          $VI = [1, 38],
          $VJ = [1, 39],
          $VK = [1, 77],
          $VL = [5, 13, 14, 15, 16, 17, 21, 47, 108, 120, 121, 125, 128, 132, 133, 134, 135, 137, 138, 139, 140, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169],
          $VM = [1, 82],
          $VN = [1, 83],
          $VO = [1, 84],
          $VP = [1, 86],
          $VQ = [1, 87],
          $VR = [49, 106],
          $VS = [21, 47, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169],
          $VT = [2, 121],
          $VU = [1, 101],
          $VV = [1, 102],
          $VW = [1, 103],
          $VX = [1, 100],
          $VY = [2, 159],
          $VZ = [21, 25, 26, 49, 106],
          $V_ = [2, 141],
          $V$ = [21, 25, 26, 30, 32, 49, 106],
          $V01 = [21, 47, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 169],
          $V11 = [21, 47, 120, 121, 135, 137, 138, 139, 140, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169],
          $V21 = [21, 25, 26, 30, 32, 34, 49, 106],
          $V31 = [2, 177],
          $V41 = [2, 12],
          $V51 = [11, 23, 30, 32, 34, 36, 38, 39, 40, 49, 57, 58, 62, 63, 64, 67, 68, 70, 71, 72, 73, 75, 76, 78, 80, 82, 84, 86, 88, 90, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 106, 170],
          $V61 = [5, 10, 13, 14, 15, 16, 17, 21, 25, 26, 28, 29, 30, 39, 40, 47, 51, 57, 58, 59, 60, 106, 108, 120, 121, 125, 128, 132, 133, 134, 135, 137, 138, 139, 140, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 172, 189, 191, 193, 194, 195, 196, 197, 198, 202, 203, 204, 205, 206],
          $V71 = [1, 169],
          $V81 = [1, 170],
          $V91 = [1, 171],
          $Va1 = [1, 172],
          $Vb1 = [1, 156],
          $Vc1 = [1, 157],
          $Vd1 = [1, 182],
          $Ve1 = [1, 163],
          $Vf1 = [1, 164],
          $Vg1 = [1, 165],
          $Vh1 = [1, 166],
          $Vi1 = [1, 136],
          $Vj1 = [1, 127],
          $Vk1 = [1, 138],
          $Vl1 = [1, 139],
          $Vm1 = [1, 140],
          $Vn1 = [1, 141],
          $Vo1 = [1, 142],
          $Vp1 = [1, 143],
          $Vq1 = [1, 144],
          $Vr1 = [1, 145],
          $Vs1 = [1, 146],
          $Vt1 = [1, 147],
          $Vu1 = [1, 148],
          $Vv1 = [1, 149],
          $Vw1 = [32, 49],
          $Vx1 = [10, 21, 25, 26, 28, 29, 30, 39, 40, 47, 51, 57, 58, 59, 60, 106, 108, 120, 121, 125, 128, 132, 133, 134, 135, 137, 138, 139, 140, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 172, 189, 193, 194, 195, 196, 197, 198, 202, 203, 204, 205, 206],
          $Vy1 = [10, 21, 25, 26, 28, 29, 30, 39, 40, 47, 51, 57, 58, 59, 60, 106, 108, 120, 121, 125, 128, 132, 133, 134, 135, 137, 138, 139, 140, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 172, 189, 191, 193, 194, 195, 196, 197, 198, 202, 203, 204, 205, 206],
          $Vz1 = [1, 216],
          $VA1 = [23, 32, 36, 49, 106],
          $VB1 = [23, 32, 36, 49, 57, 58, 62, 63, 64, 67, 68, 70, 71, 72, 73, 75, 76, 78, 80, 82, 84, 86, 88, 90, 106],
          $VC1 = [2, 58],
          $VD1 = [23, 32, 36, 49, 57, 58, 62, 63, 64, 67, 68, 70, 71, 72, 73, 75, 76, 78, 80, 82, 84, 86, 88, 90, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 106],
          $VE1 = [1, 251],
          $VF1 = [23, 32, 36, 49, 88, 90, 106],
          $VG1 = [1, 252],
          $VH1 = [23, 32, 34, 36, 38, 39, 40, 49, 57, 58, 62, 63, 64, 67, 68, 70, 71, 72, 73, 75, 76, 78, 80, 82, 84, 86, 88, 90, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 106],
          $VI1 = [10, 21, 25, 26, 28, 29, 30, 39, 40, 47, 51, 57, 58, 59, 60, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169],
          $VJ1 = [23, 32, 36, 49, 86, 88, 90, 106],
          $VK1 = [1, 253],
          $VL1 = [23, 32, 36, 49, 84, 86, 88, 90, 106],
          $VM1 = [1, 256],
          $VN1 = [23, 32, 36, 49, 82, 84, 86, 88, 90, 106],
          $VO1 = [1, 257],
          $VP1 = [23, 32, 36, 49, 80, 82, 84, 86, 88, 90, 106],
          $VQ1 = [1, 261],
          $VR1 = [23, 32, 36, 49, 78, 80, 82, 84, 86, 88, 90, 106],
          $VS1 = [1, 264],
          $VT1 = [1, 265],
          $VU1 = [10, 21, 25, 26, 28, 29, 30, 32, 39, 40, 47, 51, 57, 58, 59, 60, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169],
          $VV1 = [23, 32, 36, 49, 75, 76, 78, 80, 82, 84, 86, 88, 90, 106],
          $VW1 = [1, 266],
          $VX1 = [1, 267],
          $VY1 = [1, 268],
          $VZ1 = [1, 269],
          $V_1 = [23, 32, 36, 49, 70, 71, 72, 73, 75, 76, 78, 80, 82, 84, 86, 88, 90, 106],
          $V$1 = [1, 270],
          $V02 = [1, 271],
          $V12 = [23, 32, 36, 49, 67, 68, 70, 71, 72, 73, 75, 76, 78, 80, 82, 84, 86, 88, 90, 106],
          $V22 = [1, 272],
          $V32 = [1, 273],
          $V42 = [23, 32, 36, 49, 57, 58, 67, 68, 70, 71, 72, 73, 75, 76, 78, 80, 82, 84, 86, 88, 90, 106],
          $V52 = [1, 274],
          $V62 = [1, 275],
          $V72 = [1, 276],
          $V82 = [21, 47, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 172],
          $V92 = [1, 306],
          $Va2 = [30, 34],
          $Vb2 = [32, 106],
          $Vc2 = [10, 21, 25, 26, 28, 29, 30, 39, 40, 47, 51, 57, 58, 59, 60, 106, 120, 121, 125, 128, 132, 133, 134, 135, 137, 138, 139, 140, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169];

      var parser = {
        trace: function trace() {},
        yy: {},
        symbols_: {
          "error": 2,
          "glsl-start": 3,
          "translation_unit": 4,
          "EOF": 5,
          "version_statement": 6,
          "extension_statement_list": 7,
          "external_declaration_list": 8,
          "VERSION": 9,
          "INTCONSTANT": 10,
          "EOL": 11,
          "pragma_statement": 12,
          "PRAGMA_DEBUG_ON": 13,
          "PRAGMA_DEBUG_OFF": 14,
          "PRAGMA_OPTIMIZE_ON": 15,
          "PRAGMA_OPTIMIZE_OFF": 16,
          "PRAGMA_INVARIANT_ALL": 17,
          "extension_statement": 18,
          "any_identifier": 19,
          "variable_identifier": 20,
          "TYPE_IDENTIFIER": 21,
          "EXTENSION": 22,
          ":": 23,
          "external_declaration": 24,
          "IDENTIFIER": 25,
          "NEW_IDENTIFIER": 26,
          "primary_expression": 27,
          "FLOATCONSTANT": 28,
          "BOOLCONSTANT": 29,
          "(": 30,
          "expression": 31,
          ")": 32,
          "postfix_expression": 33,
          "[": 34,
          "integer_expression": 35,
          "]": 36,
          "function_call": 37,
          ".": 38,
          "++": 39,
          "--": 40,
          "function_call_or_method": 41,
          "function_call_generic": 42,
          "method_call_generic": 43,
          "function_call_header_with_parameters": 44,
          "function_call_header_no_parameters": 45,
          "function_call_header": 46,
          "VOID": 47,
          "assignment_expression": 48,
          ",": 49,
          "type_specifier": 50,
          "FIELD_SELECTION": 51,
          "method_call_header_with_parameters": 52,
          "method_call_header_no_parameters": 53,
          "method_call_header": 54,
          "unary_expression": 55,
          "unary_operator": 56,
          "+": 57,
          "-": 58,
          "!": 59,
          "~": 60,
          "multiplicative_expression": 61,
          "*": 62,
          "/": 63,
          "%": 64,
          "additive_expression": 65,
          "shift_expression": 66,
          "<<": 67,
          ">>": 68,
          "relational_expression": 69,
          "<": 70,
          ">": 71,
          "<=": 72,
          ">=": 73,
          "equality_expression": 74,
          "==": 75,
          "!=": 76,
          "and_expression": 77,
          "&": 78,
          "exclusive_or_expression": 79,
          "^": 80,
          "inclusive_or_expression": 81,
          "|": 82,
          "logical_and_expression": 83,
          "&&": 84,
          "logical_xor_expression": 85,
          "^^": 86,
          "logical_or_expression": 87,
          "||": 88,
          "conditional_expression": 89,
          "?": 90,
          "assignment_operator": 91,
          "=": 92,
          "*=": 93,
          "/=": 94,
          "%=": 95,
          "+=": 96,
          "-=": 97,
          "<<=": 98,
          ">>=": 99,
          "&=": 100,
          "^=": 101,
          "|=": 102,
          "constant_expression": 103,
          "declaration": 104,
          "function_prototype": 105,
          ";": 106,
          "init_declarator_list": 107,
          "PRECISION": 108,
          "precision_qualifier": 109,
          "type_specifier_no_prec": 110,
          "function_declarator": 111,
          "function_header": 112,
          "function_header_with_parameters": 113,
          "parameter_declaration": 114,
          "fully_specified_type": 115,
          "parameter_declarator": 116,
          "parameter_type_qualifier": 117,
          "parameter_qualifier": 118,
          "parameter_type_specifier": 119,
          "IN": 120,
          "OUT": 121,
          "INOUT": 122,
          "single_declaration": 123,
          "initializer": 124,
          "INVARIANT": 125,
          "type_qualifier": 126,
          "layout_qualifier": 127,
          "LAYOUT": 128,
          "layout_qualifier_id_list": 129,
          "layout_qualifier_id": 130,
          "interpolation_qualifier": 131,
          "SMOOTH": 132,
          "FLAT": 133,
          "NOPERSPECTIVE": 134,
          "CONST": 135,
          "storage_qualifier": 136,
          "ATTRIBUTE": 137,
          "VARYING": 138,
          "CENTROID": 139,
          "UNIFORM": 140,
          "type_specifier_nonarray": 141,
          "basic_type_specifier_nonarray": 142,
          "struct_specifier": 143,
          "FLOAT": 144,
          "DOUBLE": 145,
          "INT": 146,
          "BOOL": 147,
          "VEC2": 148,
          "VEC3": 149,
          "VEC4": 150,
          "BVEC2": 151,
          "BVEC3": 152,
          "BVEC4": 153,
          "IVEC2": 154,
          "IVEC3": 155,
          "IVEC4": 156,
          "MAT2X2": 157,
          "MAT3X3": 158,
          "MAT4X4": 159,
          "SAMPLER1D": 160,
          "SAMPLER2D": 161,
          "SAMPLER3D": 162,
          "SAMPLERCUBE": 163,
          "SAMPLER1DSHADOW": 164,
          "SAMPLER2DSHADOW": 165,
          "HIGHP": 166,
          "MEDIUMP": 167,
          "LOWP": 168,
          "STRUCT": 169,
          "{": 170,
          "struct_declaration_list": 171,
          "}": 172,
          "struct_declaration": 173,
          "struct_declarator_list": 174,
          "struct_declarator": 175,
          "declaration_statement": 176,
          "statement": 177,
          "compound_statement": 178,
          "simple_statement": 179,
          "expression_statement": 180,
          "selection_statement": 181,
          "switch_statement": 182,
          "case_label": 183,
          "iteration_statement": 184,
          "jump_statement": 185,
          "statement_list": 186,
          "statement_no_new_scope": 187,
          "compound_statement_no_new_scope": 188,
          "IF": 189,
          "selection_rest_statement": 190,
          "ELSE": 191,
          "condition": 192,
          "SWITCH": 193,
          "CASE": 194,
          "DEFAULT": 195,
          "WHILE": 196,
          "DO": 197,
          "FOR": 198,
          "for_init_statement": 199,
          "for_rest_statement": 200,
          "conditionopt": 201,
          "CONTINUE": 202,
          "BREAK": 203,
          "RETURN": 204,
          "DISCARD": 205,
          "DEBUGGER": 206,
          "function_definition": 207,
          "$accept": 0,
          "$end": 1
        },
        terminals_: {
          2: "error",
          5: "EOF",
          9: "VERSION",
          10: "INTCONSTANT",
          11: "EOL",
          13: "PRAGMA_DEBUG_ON",
          14: "PRAGMA_DEBUG_OFF",
          15: "PRAGMA_OPTIMIZE_ON",
          16: "PRAGMA_OPTIMIZE_OFF",
          17: "PRAGMA_INVARIANT_ALL",
          21: "TYPE_IDENTIFIER",
          22: "EXTENSION",
          23: ":",
          25: "IDENTIFIER",
          26: "NEW_IDENTIFIER",
          28: "FLOATCONSTANT",
          29: "BOOLCONSTANT",
          30: "(",
          32: ")",
          34: "[",
          36: "]",
          38: ".",
          39: "++",
          40: "--",
          47: "VOID",
          49: ",",
          51: "FIELD_SELECTION",
          57: "+",
          58: "-",
          59: "!",
          60: "~",
          62: "*",
          63: "/",
          64: "%",
          67: "<<",
          68: ">>",
          70: "<",
          71: ">",
          72: "<=",
          73: ">=",
          75: "==",
          76: "!=",
          78: "&",
          80: "^",
          82: "|",
          84: "&&",
          86: "^^",
          88: "||",
          90: "?",
          92: "=",
          93: "*=",
          94: "/=",
          95: "%=",
          96: "+=",
          97: "-=",
          98: "<<=",
          99: ">>=",
          100: "&=",
          101: "^=",
          102: "|=",
          106: ";",
          108: "PRECISION",
          120: "IN",
          121: "OUT",
          122: "INOUT",
          125: "INVARIANT",
          128: "LAYOUT",
          132: "SMOOTH",
          133: "FLAT",
          134: "NOPERSPECTIVE",
          135: "CONST",
          137: "ATTRIBUTE",
          138: "VARYING",
          139: "CENTROID",
          140: "UNIFORM",
          144: "FLOAT",
          145: "DOUBLE",
          146: "INT",
          147: "BOOL",
          148: "VEC2",
          149: "VEC3",
          150: "VEC4",
          151: "BVEC2",
          152: "BVEC3",
          153: "BVEC4",
          154: "IVEC2",
          155: "IVEC3",
          156: "IVEC4",
          157: "MAT2X2",
          158: "MAT3X3",
          159: "MAT4X4",
          160: "SAMPLER1D",
          161: "SAMPLER2D",
          162: "SAMPLER3D",
          163: "SAMPLERCUBE",
          164: "SAMPLER1DSHADOW",
          165: "SAMPLER2DSHADOW",
          166: "HIGHP",
          167: "MEDIUMP",
          168: "LOWP",
          169: "STRUCT",
          170: "{",
          172: "}",
          189: "IF",
          191: "ELSE",
          193: "SWITCH",
          194: "CASE",
          195: "DEFAULT",
          196: "WHILE",
          197: "DO",
          198: "FOR",
          202: "CONTINUE",
          203: "BREAK",
          204: "RETURN",
          205: "DISCARD",
          206: "DEBUGGER"
        },
        productions_: [0, [3, 2], [4, 3], [6, 0], [6, 3], [12, 2], [12, 2], [12, 2], [12, 2], [12, 2], [7, 0], [7, 2], [19, 1], [19, 1], [18, 5], [8, 1], [8, 2], [20, 1], [20, 1], [27, 1], [27, 1], [27, 1], [27, 1], [27, 3], [33, 1], [33, 4], [33, 1], [33, 3], [33, 2], [33, 2], [35, 1], [37, 1], [41, 1], [41, 3], [42, 2], [42, 2], [45, 2], [45, 1], [44, 2], [44, 3], [46, 2], [46, 2], [46, 1], [43, 2], [43, 2], [53, 2], [53, 1], [52, 2], [52, 3], [54, 2], [55, 1], [55, 2], [55, 2], [55, 2], [56, 1], [56, 1], [56, 1], [56, 1], [61, 1], [61, 3], [61, 3], [61, 3], [65, 1], [65, 3], [65, 3], [66, 1], [66, 3], [66, 3], [69, 1], [69, 3], [69, 3], [69, 3], [69, 3], [74, 1], [74, 3], [74, 3], [77, 1], [77, 3], [79, 1], [79, 3], [81, 1], [81, 3], [83, 1], [83, 3], [85, 1], [85, 3], [87, 1], [87, 3], [89, 1], [89, 5], [48, 1], [48, 3], [91, 1], [91, 1], [91, 1], [91, 1], [91, 1], [91, 1], [91, 1], [91, 1], [91, 1], [91, 1], [91, 1], [31, 1], [31, 3], [103, 1], [104, 2], [104, 2], [104, 4], [105, 2], [111, 1], [111, 1], [113, 2], [113, 3], [112, 3], [116, 2], [116, 5], [114, 3], [114, 2], [114, 3], [114, 2], [118, 0], [118, 1], [118, 1], [118, 1], [119, 1], [107, 1], [107, 3], [107, 5], [107, 6], [107, 7], [107, 8], [107, 5], [123, 1], [123, 2], [123, 4], [123, 5], [123, 6], [123, 7], [123, 4], [123, 2], [115, 1], [115, 2], [127, 4], [129, 1], [129, 3], [130, 1], [130, 3], [131, 1], [131, 1], [131, 1], [117, 1], [126, 1], [126, 1], [126, 2], [126, 1], [126, 2], [126, 2], [126, 3], [126, 1], [136, 1], [136, 1], [136, 1], [136, 2], [136, 1], [136, 1], [136, 2], [136, 2], [136, 1], [50, 1], [50, 2], [110, 1], [110, 3], [110, 4], [141, 1], [141, 1], [141, 1], [142, 1], [142, 1], [142, 1], [142, 1], [142, 1], [142, 1], [142, 1], [142, 1], [142, 1], [142, 1], [142, 1], [142, 1], [142, 1], [142, 1], [142, 1], [142, 1], [142, 1], [142, 1], [142, 1], [142, 1], [142, 1], [142, 1], [142, 1], [109, 1], [109, 1], [109, 1], [143, 5], [143, 4], [171, 1], [171, 2], [173, 3], [174, 1], [174, 3], [175, 1], [175, 4], [124, 1], [176, 1], [177, 1], [177, 1], [179, 1], [179, 1], [179, 1], [179, 1], [179, 1], [179, 1], [179, 1], [178, 2], [178, 3], [187, 1], [187, 1], [188, 2], [188, 3], [186, 1], [186, 2], [180, 1], [180, 2], [181, 5], [190, 3], [190, 1], [192, 1], [192, 4], [182, 5], [183, 3], [183, 2], [184, 5], [184, 7], [184, 6], [199, 1], [199, 1], [201, 1], [201, 0], [200, 2], [200, 3], [185, 2], [185, 2], [185, 2], [185, 3], [185, 2], [185, 2], [24, 1], [24, 1], [24, 1], [207, 2]],
        performAction: function anonymous(yytext, yyleng, yylineno, yy, yystate
        /* action[1] */
        , $$
        /* vstack */
        , _$
        /* lstack */
        ) {
          /* this == yyval */
          var $0 = $$.length - 1;

          switch (yystate) {
            case 1:
              return $$[$0 - 1];
              break;

            case 15:
            case 16:
              if ($$[$0] !== null) {
                yy.state.addAstNode($$[$0]);
              }

              break;

            case 19:
              this.$ = new AstExpression('ident');
              this.$.setLocation(_$[$0]);
              this.$.primary_expression.identifier = $$[$0];
              break;

            case 20:
              this.$ = new AstExpression('int');
              this.$.setLocation(_$[$0]);
              this.$.primary_expression.int_constant = $$[$0];
              this.$.primary_expression.type = 'int';
              break;

            case 21:
              this.$ = new AstExpression('float');
              this.$.setLocation(_$[$0]);
              this.$.primary_expression.float_constant = $$[$0];
              this.$.primary_expression.type = 'float';
              break;

            case 22:
              this.$ = new AstExpression('bool');
              this.$.setLocation(_$[$0]);
              this.$.primary_expression.bool_constant = $$[$0];
              this.$.primary_expression.type = 'bool';
              break;

            case 23:
              this.$ = $$[$0 - 1];
              this.$.grouped = true;
              break;

            case 25:
              this.$ = new AstExpression('[]', $$[$0 - 3], $$[$0 - 1]);
              this.$.setLocation(_$[$0 - 3]);
              break;

            case 27:
              this.$ = new AstExpression('.', $$[$0 - 2]);
              this.$.setLocation(_$[$0 - 2]);
              this.$.primary_expression.identifier = $$[$0];
              break;

            case 28:
              this.$ = new AstExpression('x++', $$[$0 - 1]);
              this.$.setLocation(_$[$0 - 1]);
              break;

            case 29:
              this.$ = new AstExpression('x--', $$[$0 - 1]);
              this.$.setLocation(_$[$0 - 1]);
              break;

            case 38:
              this.$ = $$[$0 - 1];
              this.$.setLocation(_$[$0 - 1]);
              this.$.expressions.push($$[$0]);
              break;

            case 39:
              this.$ = $$[$0 - 2];
              this.$.setLocation(_$[$0 - 2]);
              this.$.expressions.push($$[$0]);
              break;

            case 40:
              this.$ = new AstFunctionExpression($$[$0 - 1]);
              this.$.setLocation(_$[$0 - 1]);
              break;

            case 41:
              var callee = new AstExpression($$[$0 - 1]);
              this.$ = new AstFunctionExpression(callee);
              this.$.setLocation(_$[$0 - 1]);
              break;

            case 51:
              this.$ = new AstExpression('++x', $$[$0]);
              this.$.setLocation(_$[$0 - 1]);
              break;

            case 52:
              this.$ = new AstExpression('--x', $$[$0]);
              this.$.setLocation(_$[$0 - 1]);
              break;

            case 53:
              this.$ = new AstExpression($$[$0 - 1], $$[$0]);
              this.$.setLocation(_$[$0 - 1]);
              break;

            case 54:
              this.$ = 'POS';
              break;

            case 55:
              this.$ = 'NEG';
              break;

            case 59:
            case 60:
            case 61:
            case 63:
            case 64:
            case 66:
            case 67:
            case 69:
            case 70:
            case 71:
            case 72:
            case 74:
            case 75:
            case 77:
            case 79:
            case 81:
            case 83:
            case 85:
            case 87:
              this.$ = new AstExpressionBin($$[$0 - 1], $$[$0 - 2], $$[$0]);
              this.$.setLocation(_$[$0 - 2]);
              break;

            case 89:
              this.$ = new AstExpression($$[$0 - 3], $$[$0 - 4], $$[$0 - 2], $$[$0]);
              this.$.setLocation(_$[$0 - 4]);
              break;

            case 91:
              this.$ = new AstExpression($$[$0 - 1], $$[$0 - 2], $$[$0]);
              this.$.setLocation(_$[$0 - 2]);
              break;

            case 103:
              this.$ = $$[$0];
              break;

            case 104:
              if ($$[$0 - 2].oper !== $$[$0 - 1]) {
                this.$ = new AstExpression($$[$0 - 1]);
                this.$.setLocation(_$[$0 - 2]);
                this.$.expressions.push($$[$0 - 2]);
              } else {
                this.$ = $$[$0 - 2];
              }

              this.$.expressions.push($$[$0]);
              break;

            case 106:
              yy.state.symbols.pop_scope();
              this.$ = $$[$0 - 1];
              break;

            case 107:
              this.$ = $$[$0 - 1];
              break;

            case 108:
              $$[$0 - 1].precision = $$[$0 - 2];
              $$[$0 - 1].is_precision_statement = true;
              this.$ = $$[$0 - 1];
              break;

            case 112:
              this.$ = $$[$0 - 1];
              this.$.parameters.push($$[$0]);
              break;

            case 113:
              this.$ = $$[$0 - 2];
              this.$.parameters.push($$[$0]);
              break;

            case 114:
              this.$ = new AstFunction();
              this.$.setLocation(_$[$0 - 2]);
              this.$.return_type = $$[$0 - 2];
              this.$.identifier = $$[$0 - 1]; //Check for duplicates

              if ($$[$0 - 1] == 'main') {
                if (yy.state.symbols.get_function($$[$0 - 1])) {
                  var e = new Error("Cannot define main() more than once");
                  e.lineNumber = _$[$0 - 2].first_line;
                  e.columnNumber = _$[$0 - 2].first_column;
                  throw e;
                }
              }

              this.$.entry = yy.state.symbols.add_function($$[$0 - 1], $$[$0 - 2].specifier.type_name);
              this.$.entry.Ast = this.$;
              yy.state.symbols.push_scope();
              break;

            case 115:
              this.$ = new AstParameterDeclarator();
              this.$.setLocation(_$[$0 - 1]);
              this.$.type = new AstFullySpecifiedType();
              this.$.type.setLocation(_$[$0 - 1]);
              this.$.type.specifier = $$[$0 - 1];
              this.$.identifier = $$[$0];
              break;

            case 117:
              $$[$0 - 2].concat($$[$0 - 1]);
              this.$ = $$[$0];
              this.$.type.qualifier = $$[$0 - 2];
              break;

            case 118:
              this.$ = $$[$0];
              this.$.type.qualifier = $$[$0 - 1];
              break;

            case 119:
              $$[$0 - 2].concat($$[$0 - 1]);
              this.$ = new AstParameterDeclarator();
              this.$.setLocation(_$[$0 - 2]);
              this.$.type = new AstFullySpecifiedType();
              this.$.type.qualifier = $$[$0 - 2];
              this.$.type.specifier = $$[$0];
              break;

            case 120:
              this.$ = new AstParameterDeclarator();
              this.$.setLocation(_$[$0 - 1]);
              this.$.type = new AstFullySpecifiedType();
              this.$.type.qualifier = $$[$0 - 1];
              this.$.type.specifier = $$[$0];
              break;

            case 121:
              this.$ = [];
              break;

            case 122:
              this.$ = ['in'];
              break;

            case 123:
              this.$ = ['out'];
              break;

            case 124:
              this.$ = ['inout'];
              break;

            case 127:
              var decl = new AstDeclaration($$[$0], false);
              decl.setLocation(_$[$0 - 2]);
              this.$ = $$[$0 - 2];
              this.$.declarations.push(decl);
              /*yy.state.symbols.add_variable($$[$0]);*/

              break;

            case 129:
              var decl = new AstDeclaration($$[$0 - 3], true, $$[$0 - 1]);
              decl.setLocation(_$[$0 - 5]);
              this.$ = $$[$0 - 5];
              this.$.declarations.push(decl);
              /*yy.state.symbols.add_variable($$[$0-3]);*/

              break;

            case 132:
              var decl = new AstDeclaration($$[$0 - 2], false, null, $$[$0]);
              decl.setLocation(_$[$0 - 4]);
              this.$ = $$[$0 - 4];
              this.$.declarations.push(decl);
              /*yy.state.symbols.add_variable($$[$0-2]);*/

              break;

            case 133:
              if ($$[$0].specifier.type_specifier !== types.struct) {
                yy.state.addError("empty declaration list", _$[$0].first_line, _$[$0].first_column);
                return 0;
              }

              this.$ = new AstDeclaratorList($$[$0]);
              this.$.setLocation(_$[$0]);
              break;

            case 134:
              var decl = new AstDeclaration($$[$0], false);
              decl.setLocation(_$[$0]);
              this.$ = new AstDeclaratorList($$[$0 - 1]);
              this.$.setLocation(_$[$0 - 1]);
              this.$.declarations.push(decl);
              break;

            case 135:
              var decl = new AstDeclaration($$[$0 - 2], true);
              decl.setLocation(_$[$0 - 2]);
              this.$ = new AstDeclaratorList($$[$0 - 3]);
              this.$.setLocation(_$[$0 - 3]);
              this.$.declarations.push(decl);
              break;

            case 136:
              var decl = new AstDeclaration($$[$0 - 3], true, $$[$0 - 1]);
              decl.setLocation(_$[$0 - 3]);
              this.$ = new AstDeclaratorList($$[$0 - 4]);
              this.$.setLocation(_$[$0 - 4]);
              this.$.declarations.push(decl);
              break;

            case 137:
              var decl = new AstDeclaration($$[$0 - 4], true, null, $$[$0]);
              decl.setLocation(_$[$0 - 4]);
              this.$ = new AstDeclaratorList($$[$0 - 5]);
              this.$.setLocation(_$[$0 - 5]);
              this.$.declarations.push(decl);
              break;

            case 138:
              var decl = new AstDeclaration($$[$0 - 5], true, $$[$0 - 3], $$[$0]);
              decl.setLocation(_$[$0 - 5]);
              this.$ = new AstDeclaratorList($$[$0 - 6]);
              this.$.setLocation(_$[$0 - 6]);
              this.$.declarations.push(decl);
              break;

            case 139:
              var decl = new AstDeclaration($$[$0 - 2], false, null, $$[$0]);
              decl.setLocation(_$[$0 - 2]);
              this.$ = new AstDeclaratorList($$[$0 - 3]);
              this.$.setLocation(_$[$0 - 3]);
              this.$.declarations.push(decl);
              break;

            case 141:
              this.$ = new AstFullySpecifiedType();
              this.$.setLocation(_$[$0]);
              this.$.specifier = $$[$0];
              break;

            case 142:
              this.$ = new AstFullySpecifiedType();
              this.$.setLocation(_$[$0 - 1]);
              this.$.qualifier = $$[$0 - 1];
              this.$.specifier = $$[$0];
              break;

            case 143:
              this.$ = $$[$0 - 1];
              break;

            case 151:
            case 160:
              this.$ = ['const'];
              break;

            case 161:
              this.$ = ['attribute'];
              break;

            case 162:
              this.$ = ['varying'];
              break;

            case 163:
              this.$ = ['centroid', 'varying'];
              break;

            case 164:
              this.$ = ['in'];
              break;

            case 165:
              this.$ = ['out'];
              break;

            case 166:
              this.$ = ['centroid', 'in'];
              break;

            case 167:
              this.$ = ['centroid', 'out'];
              break;

            case 168:
              this.$ = ['uniform'];
              break;

            case 169:
              this.$ = $$[$0];
              break;

            case 170:
              this.$ = $$[$0];
              this.$.precision = $$[$0 - 1];
              break;

            case 174:
            case 175:
            case 176:
              this.$ = new AstTypeSpecifier($$[$0]);
              this.$.setLocation(_$[$0]);
              break;

            case 200:
              this.$ = ast_precision.highp;
              break;

            case 201:
              this.$ = ast_precision.mediump;
              break;

            case 202:
              this.$ = ast_precision.lowp;
              break;

            case 203:
              this.$ = new AstStructSpecifier($$[$0 - 3], $$[$0 - 1]);
              this.$.setLocation(_$[$0 - 4]);
              yy.state.symbols.add_type($$[$0 - 3], types._void);
              break;

            case 205:
              this.$ = [$$[$0]];
              break;

            case 206:
              this.$ = $$[$0 - 1];
              this.$.push($$[$0]);
              break;

            case 207:
              var type = new AstFullySpecifiedType();
              type.setLocation(_$[$0 - 2]);
              type.specifier = $$[$0 - 2];
              this.$ = new AstDeclaratorList(type);
              this.$.setLocation(_$[$0 - 2]);
              this.$.declarations = $$[$0 - 1];
              break;

            case 210:
              this.$ = new AstDeclaration($$[$0], false);
              this.$.setLocation(_$[$0]);
              yy.state.symbols.add_variable($$[$0]);
              break;

            case 219:
            case 220:
            case 258:
              this.$ = null;
              break;

            case 223:
              this.$ = new AstCompoundStatement(true);
              this.$.setLocation(_$[$0 - 1]);
              break;

            case 224:
              yy.state.symbols.push_scope();
              this.$ = new AstCompoundStatement(true, $$[$0 - 1]);
              this.$.setLocation(_$[$0 - 2]);
              yy.state.symbols.pop_scope();
              break;

            case 228:
              this.$ = new AstCompoundStatement(false, $$[$0 - 1]);
              this.$.setLocation(_$[$0 - 2]);
              break;

            case 229:
              if ($$[$0] === null) {
                yy.state.addError("<nil> statement", _$[$0].first_line, _$[$0].first_column);
              } else {
                this.$ = [$$[$0]];
              }

              break;

            case 230:
              if ($$[$0] === null) {
                yy.state.addError("<nil> statement", _$[$0 - 1].first_line, _$[$0 - 1].first_column);
              }

              this.$ = $$[$0 - 1];
              this.$.push($$[$0]);
              break;

            case 232:
              this.$ = new AstExpressionStatement($$[$0 - 1]);
              this.$.setLocation(_$[$0 - 1]);
              break;

            case 233:
              this.$ = new AstSelectionStatement($$[$0 - 2], $$[$0].then_statement, $$[$0].else_statement);
              this.$.setLocation(_$[$0 - 4]);
              break;

            case 234:
              this.$ = {};
              this.$.then_statement = $$[$0 - 2];
              this.$.else_statement = $$[$0];
              break;

            case 235:
              this.$.then_statement = $$[$0];
              break;

            case 250:
              this.$ = new AstJumpStatement('continue');
              this.$.setLocation(_$[$0 - 1]);
              break;

            case 251:
              this.$ = new AstJumpStatement('break');
              this.$.setLocation(_$[$0 - 1]);
              break;

            case 252:
              this.$ = new AstJumpStatement('return');
              this.$.setLocation(_$[$0 - 1]);
              break;

            case 253:
              this.$ = new AstJumpStatement('return', $$[$0 - 1]);
              this.$.setLocation(_$[$0 - 2]);
              break;

            case 254:
              /* Fragment shader only.*/
              this.$ = new AstJumpStatement('discard');
              this.$.setLocation(_$[$0 - 1]);
              break;

            case 255:
              this.$ = new AstJumpStatement('debugger');
              this.$.setLocation(_$[$0 - 1]);
              break;

            case 256:
            case 257:
              this.$ = $$[$0];
              break;

            case 259:
              this.$ = new AstFunctionDefinition();
              this.$.setLocation(_$[$0 - 1]);
              this.$.proto_type = $$[$0 - 1];
              this.$.body = $$[$0];
              yy.state.symbols.pop_scope();
              break;
          }
        },
        table: [o($V0, [2, 3], {
          3: 1,
          4: 2,
          6: 3,
          9: [1, 4]
        }), {
          1: [3]
        }, {
          5: [1, 5]
        }, o($V0, [2, 10], {
          7: 6
        }), {
          10: [1, 7]
        }, {
          1: [2, 1]
        }, {
          8: 8,
          12: 14,
          13: $V1,
          14: $V2,
          15: $V3,
          16: $V4,
          17: $V5,
          18: 9,
          21: $V6,
          22: [1, 11],
          24: 10,
          47: $V7,
          50: 29,
          104: 13,
          105: 15,
          107: 16,
          108: $V8,
          109: 32,
          110: 31,
          111: 23,
          112: 25,
          113: 26,
          115: 27,
          120: $V9,
          121: $Va,
          123: 24,
          125: $Vb,
          126: 30,
          127: 34,
          128: $Vc,
          131: 35,
          132: $Vd,
          133: $Ve,
          134: $Vf,
          135: $Vg,
          136: 33,
          137: $Vh,
          138: $Vi,
          139: $Vj,
          140: $Vk,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK,
          207: 12
        }, {
          11: [1, 78]
        }, {
          5: [2, 2],
          12: 14,
          13: $V1,
          14: $V2,
          15: $V3,
          16: $V4,
          17: $V5,
          21: $V6,
          24: 79,
          47: $V7,
          50: 29,
          104: 13,
          105: 15,
          107: 16,
          108: $V8,
          109: 32,
          110: 31,
          111: 23,
          112: 25,
          113: 26,
          115: 27,
          120: $V9,
          121: $Va,
          123: 24,
          125: $Vb,
          126: 30,
          127: 34,
          128: $Vc,
          131: 35,
          132: $Vd,
          133: $Ve,
          134: $Vf,
          135: $Vg,
          136: 33,
          137: $Vh,
          138: $Vi,
          139: $Vj,
          140: $Vk,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK,
          207: 12
        }, o($V0, [2, 11]), o($VL, [2, 15]), {
          19: 80,
          20: 81,
          21: $VM,
          25: $VN,
          26: $VO
        }, o($VL, [2, 256]), o($VL, [2, 257]), o($VL, [2, 258]), {
          106: $VP,
          170: $VQ,
          188: 85
        }, {
          49: [1, 89],
          106: [1, 88]
        }, {
          109: 90,
          166: $VH,
          167: $VI,
          168: $VJ
        }, {
          11: [1, 91]
        }, {
          11: [1, 92]
        }, {
          11: [1, 93]
        }, {
          11: [1, 94]
        }, {
          11: [1, 95]
        }, {
          32: [1, 96]
        }, o($VR, [2, 126]), o($VS, $VT, {
          114: 97,
          117: 98,
          118: 99,
          32: [2, 110],
          120: $VU,
          121: $VV,
          122: $VW,
          135: $VX
        }), {
          32: [2, 111],
          49: [1, 104]
        }, o($VR, [2, 133], {
          19: 105,
          20: 106,
          21: $VM,
          25: $VN,
          26: $VO
        }), o($VS, $VY, {
          20: 107,
          136: 108,
          131: 109,
          25: $VN,
          26: $VO,
          120: $V9,
          121: $Va,
          132: $Vd,
          133: $Ve,
          134: $Vf,
          135: $Vg,
          137: $Vh,
          138: $Vi,
          139: $Vj,
          140: $Vk
        }), o($VZ, $V_), {
          21: $V6,
          47: $V7,
          50: 110,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, o($V$, [2, 169]), {
          21: $V6,
          47: $V7,
          110: 111,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          169: $VK
        }, o($VS, [2, 152]), o($VS, [2, 153], {
          136: 112,
          120: $V9,
          121: $Va,
          135: $Vg,
          137: $Vh,
          138: $Vi,
          139: $Vj,
          140: $Vk
        }), o($VS, [2, 155], {
          136: 113,
          120: $V9,
          121: $Va,
          135: $Vg,
          137: $Vh,
          138: $Vi,
          139: $Vj,
          140: $Vk
        }), o($V$, [2, 171], {
          34: [1, 114]
        }), o($V01, [2, 200]), o($V01, [2, 201]), o($V01, [2, 202]), o($VS, [2, 160]), o($VS, [2, 161]), o($VS, [2, 162]), {
          120: [1, 116],
          121: [1, 117],
          138: [1, 115]
        }, o($VS, [2, 164]), o($VS, [2, 165]), o($VS, [2, 168]), {
          30: [1, 118]
        }, o($V11, [2, 148]), o($V11, [2, 149]), o($V11, [2, 150]), o($V21, [2, 174]), o($V21, [2, 175]), o($V21, [2, 176]), o($V21, $V31), o($V21, [2, 178]), o($V21, [2, 179]), o($V21, [2, 180]), o($V21, [2, 181]), o($V21, [2, 182]), o($V21, [2, 183]), o($V21, [2, 184]), o($V21, [2, 185]), o($V21, [2, 186]), o($V21, [2, 187]), o($V21, [2, 188]), o($V21, [2, 189]), o($V21, [2, 190]), o($V21, [2, 191]), o($V21, [2, 192]), o($V21, [2, 193]), o($V21, [2, 194]), o($V21, [2, 195]), o($V21, [2, 196]), o($V21, [2, 197]), o($V21, [2, 198]), o($V21, [2, 199]), {
          19: 119,
          20: 81,
          21: $VM,
          25: $VN,
          26: $VO,
          170: [1, 120]
        }, o($V0, [2, 4]), o($VL, [2, 16]), {
          23: [1, 121]
        }, o([11, 23, 32, 34, 49, 92, 106, 170], $V41), o([11, 23, 32, 34, 36, 38, 39, 40, 49, 57, 58, 62, 63, 64, 67, 68, 70, 71, 72, 73, 75, 76, 78, 80, 82, 84, 86, 88, 90, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 106, 170], [2, 13]), o($V51, [2, 17]), o($V51, [2, 18]), o($VL, [2, 259]), o($V61, [2, 106]), {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          31: 137,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          48: 151,
          50: 159,
          51: $Vd1,
          55: 153,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 183,
          74: 181,
          77: 179,
          79: 176,
          81: 174,
          83: 167,
          85: 160,
          87: 154,
          89: 152,
          104: 135,
          105: 150,
          106: $Vi1,
          107: 16,
          108: $V8,
          109: 32,
          110: 31,
          111: 23,
          112: 25,
          113: 26,
          115: 27,
          120: $V9,
          121: $Va,
          123: 24,
          125: $Vb,
          126: 30,
          127: 34,
          128: $Vc,
          131: 35,
          132: $Vd,
          133: $Ve,
          134: $Vf,
          135: $Vg,
          136: 33,
          137: $Vh,
          138: $Vi,
          139: $Vj,
          140: $Vk,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK,
          170: $Vj1,
          172: [1, 122],
          176: 128,
          177: 124,
          178: 125,
          179: 126,
          180: 129,
          181: 130,
          182: 131,
          183: 132,
          184: 133,
          185: 134,
          186: 123,
          189: $Vk1,
          193: $Vl1,
          194: $Vm1,
          195: $Vn1,
          196: $Vo1,
          197: $Vp1,
          198: $Vq1,
          202: $Vr1,
          203: $Vs1,
          204: $Vt1,
          205: $Vu1,
          206: $Vv1
        }, o($V61, [2, 107]), {
          19: 187,
          20: 81,
          21: $VM,
          25: $VN,
          26: $VO
        }, {
          21: $V6,
          47: $V7,
          110: 188,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          169: $VK
        }, o($VL, [2, 5]), o($VL, [2, 6]), o($VL, [2, 7]), o($VL, [2, 8]), o($VL, [2, 9]), o([106, 170], [2, 109]), o($Vw1, [2, 112]), o($VS, $VT, {
          118: 189,
          120: $VU,
          121: $VV,
          122: $VW
        }), {
          21: $V6,
          47: $V7,
          50: 192,
          109: 32,
          110: 31,
          116: 190,
          119: 191,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, o([21, 47, 120, 121, 122, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169], [2, 151]), o($VS, [2, 122]), o($VS, [2, 123]), o($VS, [2, 124]), o($VS, $VT, {
          117: 98,
          118: 99,
          114: 193,
          120: $VU,
          121: $VV,
          122: $VW,
          135: $VX
        }), o($VR, [2, 134], {
          34: [1, 194],
          92: [1, 195]
        }), o([34, 49, 92, 106], $V41, {
          30: [1, 196]
        }), o($VR, [2, 140]), o($VS, [2, 157]), {
          120: $V9,
          121: $Va,
          135: $Vg,
          136: 197,
          137: $Vh,
          138: $Vi,
          139: $Vj,
          140: $Vk
        }, o($VZ, [2, 142]), o($V$, [2, 170]), o($VS, [2, 154]), o($VS, [2, 156]), {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          33: 155,
          36: [1, 198],
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          50: 202,
          51: $Vd1,
          55: 201,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 183,
          74: 181,
          77: 179,
          79: 176,
          81: 174,
          83: 167,
          85: 160,
          87: 154,
          89: 200,
          103: 199,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, o($VS, [2, 163]), o($VS, [2, 166]), o($VS, [2, 167]), {
          19: 205,
          20: 81,
          21: $VM,
          25: $VN,
          26: $VO,
          129: 203,
          130: 204
        }, {
          170: [1, 206]
        }, {
          21: $V6,
          47: $V7,
          50: 209,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK,
          171: 207,
          173: 208
        }, {
          19: 210,
          20: 81,
          21: $VM,
          25: $VN,
          26: $VO
        }, o($V61, [2, 227]), {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          31: 137,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          48: 151,
          50: 159,
          51: $Vd1,
          55: 153,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 183,
          74: 181,
          77: 179,
          79: 176,
          81: 174,
          83: 167,
          85: 160,
          87: 154,
          89: 152,
          104: 135,
          105: 150,
          106: $Vi1,
          107: 16,
          108: $V8,
          109: 32,
          110: 31,
          111: 23,
          112: 25,
          113: 26,
          115: 27,
          120: $V9,
          121: $Va,
          123: 24,
          125: $Vb,
          126: 30,
          127: 34,
          128: $Vc,
          131: 35,
          132: $Vd,
          133: $Ve,
          134: $Vf,
          135: $Vg,
          136: 33,
          137: $Vh,
          138: $Vi,
          139: $Vj,
          140: $Vk,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK,
          170: $Vj1,
          172: [1, 211],
          176: 128,
          177: 212,
          178: 125,
          179: 126,
          180: 129,
          181: 130,
          182: 131,
          183: 132,
          184: 133,
          185: 134,
          189: $Vk1,
          193: $Vl1,
          194: $Vm1,
          195: $Vn1,
          196: $Vo1,
          197: $Vp1,
          198: $Vq1,
          202: $Vr1,
          203: $Vs1,
          204: $Vt1,
          205: $Vu1,
          206: $Vv1
        }, o($Vx1, [2, 229]), o($Vy1, [2, 214]), o($Vy1, [2, 215]), {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          31: 137,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          48: 151,
          50: 159,
          51: $Vd1,
          55: 153,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 183,
          74: 181,
          77: 179,
          79: 176,
          81: 174,
          83: 167,
          85: 160,
          87: 154,
          89: 152,
          104: 135,
          105: 150,
          106: $Vi1,
          107: 16,
          108: $V8,
          109: 32,
          110: 31,
          111: 23,
          112: 25,
          113: 26,
          115: 27,
          120: $V9,
          121: $Va,
          123: 24,
          125: $Vb,
          126: 30,
          127: 34,
          128: $Vc,
          131: 35,
          132: $Vd,
          133: $Ve,
          134: $Vf,
          135: $Vg,
          136: 33,
          137: $Vh,
          138: $Vi,
          139: $Vj,
          140: $Vk,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK,
          170: $Vj1,
          172: [1, 213],
          176: 128,
          177: 124,
          178: 125,
          179: 126,
          180: 129,
          181: 130,
          182: 131,
          183: 132,
          184: 133,
          185: 134,
          186: 214,
          189: $Vk1,
          193: $Vl1,
          194: $Vm1,
          195: $Vn1,
          196: $Vo1,
          197: $Vp1,
          198: $Vq1,
          202: $Vr1,
          203: $Vs1,
          204: $Vt1,
          205: $Vu1,
          206: $Vv1
        }, o($Vy1, [2, 216]), o($Vy1, [2, 217]), o($Vy1, [2, 218]), o($Vy1, [2, 219]), o($Vy1, [2, 220]), o($Vy1, [2, 221]), o($Vy1, [2, 222]), o($Vy1, [2, 213]), o($Vy1, [2, 231]), {
          49: $Vz1,
          106: [1, 215]
        }, {
          30: [1, 217]
        }, {
          30: [1, 218]
        }, {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          31: 219,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          48: 151,
          50: 202,
          51: $Vd1,
          55: 153,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 183,
          74: 181,
          77: 179,
          79: 176,
          81: 174,
          83: 167,
          85: 160,
          87: 154,
          89: 152,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, {
          23: [1, 220]
        }, {
          30: [1, 221]
        }, {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          31: 137,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          48: 151,
          50: 159,
          51: $Vd1,
          55: 153,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 183,
          74: 181,
          77: 179,
          79: 176,
          81: 174,
          83: 167,
          85: 160,
          87: 154,
          89: 152,
          104: 135,
          105: 150,
          106: $Vi1,
          107: 16,
          108: $V8,
          109: 32,
          110: 31,
          111: 23,
          112: 25,
          113: 26,
          115: 27,
          120: $V9,
          121: $Va,
          123: 24,
          125: $Vb,
          126: 30,
          127: 34,
          128: $Vc,
          131: 35,
          132: $Vd,
          133: $Ve,
          134: $Vf,
          135: $Vg,
          136: 33,
          137: $Vh,
          138: $Vi,
          139: $Vj,
          140: $Vk,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK,
          170: $Vj1,
          176: 128,
          177: 222,
          178: 125,
          179: 126,
          180: 129,
          181: 130,
          182: 131,
          183: 132,
          184: 133,
          185: 134,
          189: $Vk1,
          193: $Vl1,
          194: $Vm1,
          195: $Vn1,
          196: $Vo1,
          197: $Vp1,
          198: $Vq1,
          202: $Vr1,
          203: $Vs1,
          204: $Vt1,
          205: $Vu1,
          206: $Vv1
        }, {
          30: [1, 223]
        }, {
          106: [1, 224]
        }, {
          106: [1, 225]
        }, {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          31: 227,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          48: 151,
          50: 202,
          51: $Vd1,
          55: 153,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 183,
          74: 181,
          77: 179,
          79: 176,
          81: 174,
          83: 167,
          85: 160,
          87: 154,
          89: 152,
          106: [1, 226],
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, {
          106: [1, 228]
        }, {
          106: [1, 229]
        }, {
          106: $VP
        }, o($VA1, [2, 103]), o($VA1, [2, 90]), o($VB1, $VC1, {
          91: 230,
          92: [1, 231],
          93: [1, 232],
          94: [1, 233],
          95: [1, 234],
          96: [1, 235],
          97: [1, 236],
          98: [1, 237],
          99: [1, 238],
          100: [1, 239],
          101: [1, 240],
          102: [1, 241]
        }), o($VA1, [2, 88], {
          88: [1, 243],
          90: [1, 242]
        }), o($VD1, [2, 50], {
          34: [1, 244],
          38: [1, 245],
          39: [1, 246],
          40: [1, 247]
        }), {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          50: 202,
          51: $Vd1,
          55: 248,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          50: 202,
          51: $Vd1,
          55: 249,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          50: 202,
          51: $Vd1,
          55: 250,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, o($VZ, $V_, {
          30: $VE1
        }), o($VF1, [2, 86], {
          86: $VG1
        }), o($VH1, [2, 24]), o($VH1, [2, 26]), o($VI1, [2, 54]), o($VI1, [2, 55]), o($VI1, [2, 56]), o($VI1, [2, 57]), o($VJ1, [2, 84], {
          84: $VK1
        }), o($VH1, [2, 19], {
          30: [1, 254]
        }), o($VH1, [2, 20]), o($VH1, [2, 21]), o($VH1, [2, 22]), {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          31: 255,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          48: 151,
          50: 202,
          51: $Vd1,
          55: 153,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 183,
          74: 181,
          77: 179,
          79: 176,
          81: 174,
          83: 167,
          85: 160,
          87: 154,
          89: 152,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, o($VH1, [2, 31]), o($VL1, [2, 82], {
          82: $VM1
        }), o($VH1, [2, 32]), o($VN1, [2, 80], {
          80: $VO1
        }), {
          32: [1, 258],
          49: [1, 259]
        }, {
          32: [1, 260]
        }, o($VP1, [2, 78], {
          78: $VQ1
        }), {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          32: [2, 37],
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: [1, 263],
          48: 262,
          50: 202,
          51: $Vd1,
          55: 153,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 183,
          74: 181,
          77: 179,
          79: 176,
          81: 174,
          83: 167,
          85: 160,
          87: 154,
          89: 152,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, o($VR1, [2, 76], {
          75: $VS1,
          76: $VT1
        }), o($VU1, [2, 42]), o($VV1, [2, 73], {
          70: $VW1,
          71: $VX1,
          72: $VY1,
          73: $VZ1
        }), o($V_1, [2, 68], {
          67: $V$1,
          68: $V02
        }), o($V12, [2, 65], {
          57: $V22,
          58: $V32
        }), o($V42, [2, 62], {
          62: $V52,
          63: $V62,
          64: $V72
        }), o($VR, [2, 127], {
          34: [1, 277],
          92: [1, 278]
        }), {
          106: [1, 279]
        }, {
          21: $V6,
          47: $V7,
          50: 192,
          109: 32,
          110: 31,
          116: 280,
          119: 281,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, o($Vw1, [2, 118]), o($Vw1, [2, 120]), o($Vw1, [2, 125], {
          20: 81,
          19: 282,
          21: $VM,
          25: $VN,
          26: $VO
        }), o($Vw1, [2, 113]), {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          33: 155,
          36: [1, 283],
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          50: 202,
          51: $Vd1,
          55: 201,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 183,
          74: 181,
          77: 179,
          79: 176,
          81: 174,
          83: 167,
          85: 160,
          87: 154,
          89: 200,
          103: 284,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          48: 286,
          50: 202,
          51: $Vd1,
          55: 153,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 183,
          74: 181,
          77: 179,
          79: 176,
          81: 174,
          83: 167,
          85: 160,
          87: 154,
          89: 152,
          109: 32,
          110: 31,
          124: 285,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, o([21, 32, 47, 120, 121, 122, 135, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169], [2, 114]), o($VS, [2, 158]), o($V$, [2, 172]), {
          36: [1, 287]
        }, {
          36: [2, 105]
        }, o($VB1, $VC1), {
          30: $VE1
        }, {
          32: [1, 288],
          49: [1, 289]
        }, o($Vw1, [2, 144]), o($Vw1, [2, 146], {
          92: [1, 290]
        }), {
          21: $V6,
          47: $V7,
          50: 209,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK,
          171: 291,
          173: 208
        }, {
          21: $V6,
          47: $V7,
          50: 209,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK,
          172: [1, 292],
          173: 293
        }, o($V82, [2, 205]), {
          19: 296,
          20: 81,
          21: $VM,
          25: $VN,
          26: $VO,
          174: 294,
          175: 295
        }, {
          11: [1, 297]
        }, o($V61, [2, 228]), o($Vx1, [2, 230]), o($Vy1, [2, 223]), {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          31: 137,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          48: 151,
          50: 159,
          51: $Vd1,
          55: 153,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 183,
          74: 181,
          77: 179,
          79: 176,
          81: 174,
          83: 167,
          85: 160,
          87: 154,
          89: 152,
          104: 135,
          105: 150,
          106: $Vi1,
          107: 16,
          108: $V8,
          109: 32,
          110: 31,
          111: 23,
          112: 25,
          113: 26,
          115: 27,
          120: $V9,
          121: $Va,
          123: 24,
          125: $Vb,
          126: 30,
          127: 34,
          128: $Vc,
          131: 35,
          132: $Vd,
          133: $Ve,
          134: $Vf,
          135: $Vg,
          136: 33,
          137: $Vh,
          138: $Vi,
          139: $Vj,
          140: $Vk,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK,
          170: $Vj1,
          172: [1, 298],
          176: 128,
          177: 212,
          178: 125,
          179: 126,
          180: 129,
          181: 130,
          182: 131,
          183: 132,
          184: 133,
          185: 134,
          189: $Vk1,
          193: $Vl1,
          194: $Vm1,
          195: $Vn1,
          196: $Vo1,
          197: $Vp1,
          198: $Vq1,
          202: $Vr1,
          203: $Vs1,
          204: $Vt1,
          205: $Vu1,
          206: $Vv1
        }, o($Vy1, [2, 232]), {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          48: 299,
          50: 202,
          51: $Vd1,
          55: 153,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 183,
          74: 181,
          77: 179,
          79: 176,
          81: 174,
          83: 167,
          85: 160,
          87: 154,
          89: 152,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          31: 300,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          48: 151,
          50: 202,
          51: $Vd1,
          55: 153,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 183,
          74: 181,
          77: 179,
          79: 176,
          81: 174,
          83: 167,
          85: 160,
          87: 154,
          89: 152,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          31: 301,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          48: 151,
          50: 202,
          51: $Vd1,
          55: 153,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 183,
          74: 181,
          77: 179,
          79: 176,
          81: 174,
          83: 167,
          85: 160,
          87: 154,
          89: 152,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, {
          23: [1, 302],
          49: $Vz1
        }, o($Vy1, [2, 240]), {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          31: 304,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          48: 151,
          50: 159,
          51: $Vd1,
          55: 153,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 183,
          74: 181,
          77: 179,
          79: 176,
          81: 174,
          83: 167,
          85: 160,
          87: 154,
          89: 152,
          109: 32,
          110: 31,
          115: 305,
          120: $V9,
          121: $Va,
          125: $V92,
          126: 30,
          127: 34,
          128: $Vc,
          131: 35,
          132: $Vd,
          133: $Ve,
          134: $Vf,
          135: $Vg,
          136: 33,
          137: $Vh,
          138: $Vi,
          139: $Vj,
          140: $Vk,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK,
          192: 303
        }, {
          196: [1, 307]
        }, {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          31: 137,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          48: 151,
          50: 159,
          51: $Vd1,
          55: 153,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 183,
          74: 181,
          77: 179,
          79: 176,
          81: 174,
          83: 167,
          85: 160,
          87: 154,
          89: 152,
          104: 135,
          105: 150,
          106: $Vi1,
          107: 16,
          108: $V8,
          109: 32,
          110: 31,
          111: 23,
          112: 25,
          113: 26,
          115: 27,
          120: $V9,
          121: $Va,
          123: 24,
          125: $Vb,
          126: 30,
          127: 34,
          128: $Vc,
          131: 35,
          132: $Vd,
          133: $Ve,
          134: $Vf,
          135: $Vg,
          136: 33,
          137: $Vh,
          138: $Vi,
          139: $Vj,
          140: $Vk,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK,
          176: 310,
          180: 309,
          199: 308
        }, o($Vy1, [2, 250]), o($Vy1, [2, 251]), o($Vy1, [2, 252]), {
          49: $Vz1,
          106: [1, 311]
        }, o($Vy1, [2, 254]), o($Vy1, [2, 255]), {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          48: 312,
          50: 202,
          51: $Vd1,
          55: 153,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 183,
          74: 181,
          77: 179,
          79: 176,
          81: 174,
          83: 167,
          85: 160,
          87: 154,
          89: 152,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, o($VI1, [2, 92]), o($VI1, [2, 93]), o($VI1, [2, 94]), o($VI1, [2, 95]), o($VI1, [2, 96]), o($VI1, [2, 97]), o($VI1, [2, 98]), o($VI1, [2, 99]), o($VI1, [2, 100]), o($VI1, [2, 101]), o($VI1, [2, 102]), {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          31: 313,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          48: 151,
          50: 202,
          51: $Vd1,
          55: 153,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 183,
          74: 181,
          77: 179,
          79: 176,
          81: 174,
          83: 167,
          85: 160,
          87: 154,
          89: 152,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          50: 202,
          51: $Vd1,
          55: 201,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 183,
          74: 181,
          77: 179,
          79: 176,
          81: 174,
          83: 167,
          85: 314,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          31: 316,
          33: 155,
          35: 315,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          48: 151,
          50: 202,
          51: $Vd1,
          55: 153,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 183,
          74: 181,
          77: 179,
          79: 176,
          81: 174,
          83: 167,
          85: 160,
          87: 154,
          89: 152,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, {
          19: 317,
          20: 319,
          21: $VM,
          25: $VN,
          26: $VO,
          43: 318,
          52: 320,
          53: 321,
          54: 322
        }, o($VH1, [2, 28]), o($VH1, [2, 29]), o($VD1, [2, 51]), o($VD1, [2, 52]), o($VD1, [2, 53]), o($VU1, [2, 40]), {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          50: 202,
          51: $Vd1,
          55: 201,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 183,
          74: 181,
          77: 179,
          79: 176,
          81: 174,
          83: 323,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          50: 202,
          51: $Vd1,
          55: 201,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 183,
          74: 181,
          77: 179,
          79: 176,
          81: 324,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, o($VU1, [2, 41]), {
          32: [1, 325],
          49: $Vz1
        }, {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          50: 202,
          51: $Vd1,
          55: 201,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 183,
          74: 181,
          77: 179,
          79: 326,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          50: 202,
          51: $Vd1,
          55: 201,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 183,
          74: 181,
          77: 327,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, o($VH1, [2, 34]), {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          48: 328,
          50: 202,
          51: $Vd1,
          55: 153,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 183,
          74: 181,
          77: 179,
          79: 176,
          81: 174,
          83: 167,
          85: 160,
          87: 154,
          89: 152,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, o($VH1, [2, 35]), {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          50: 202,
          51: $Vd1,
          55: 201,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 183,
          74: 329,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, o($Vw1, [2, 38]), o($Va2, $V31, {
          32: [2, 36]
        }), {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          50: 202,
          51: $Vd1,
          55: 201,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 330,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          50: 202,
          51: $Vd1,
          55: 201,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 331,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          50: 202,
          51: $Vd1,
          55: 201,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 332,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          50: 202,
          51: $Vd1,
          55: 201,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 333,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          50: 202,
          51: $Vd1,
          55: 201,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 334,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          50: 202,
          51: $Vd1,
          55: 201,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 335,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          50: 202,
          51: $Vd1,
          55: 201,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 336,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          50: 202,
          51: $Vd1,
          55: 201,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 337,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          50: 202,
          51: $Vd1,
          55: 201,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 338,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          50: 202,
          51: $Vd1,
          55: 201,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 339,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          50: 202,
          51: $Vd1,
          55: 340,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          50: 202,
          51: $Vd1,
          55: 341,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          50: 202,
          51: $Vd1,
          55: 342,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          33: 155,
          36: [1, 343],
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          50: 202,
          51: $Vd1,
          55: 201,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 183,
          74: 181,
          77: 179,
          79: 176,
          81: 174,
          83: 167,
          85: 160,
          87: 154,
          89: 200,
          103: 344,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          48: 286,
          50: 202,
          51: $Vd1,
          55: 153,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 183,
          74: 181,
          77: 179,
          79: 176,
          81: 174,
          83: 167,
          85: 160,
          87: 154,
          89: 152,
          109: 32,
          110: 31,
          124: 345,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, o($V61, [2, 108]), o($Vw1, [2, 117]), o($Vw1, [2, 119]), o($Vw1, [2, 115], {
          34: [1, 346]
        }), o($VR, [2, 135], {
          92: [1, 347]
        }), {
          36: [1, 348]
        }, o($VR, [2, 139]), o([32, 49, 106], [2, 212]), o($V$, [2, 173]), o($V11, [2, 143]), {
          19: 205,
          20: 81,
          21: $VM,
          25: $VN,
          26: $VO,
          130: 349
        }, {
          10: [1, 350]
        }, {
          21: $V6,
          47: $V7,
          50: 209,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK,
          172: [1, 351],
          173: 293
        }, o($V21, [2, 204]), o($V82, [2, 206]), {
          49: [1, 353],
          106: [1, 352]
        }, o($VR, [2, 208]), o($VR, [2, 210], {
          34: [1, 354]
        }), o($V0, [2, 14]), o($Vy1, [2, 224]), o($VA1, [2, 104]), {
          32: [1, 355],
          49: $Vz1
        }, {
          32: [1, 356],
          49: $Vz1
        }, o($Vy1, [2, 239]), {
          32: [1, 357]
        }, o($Vb2, [2, 236], {
          49: $Vz1
        }), {
          19: 358,
          20: 81,
          21: $VM,
          25: $VN,
          26: $VO
        }, o($VS, $VY, {
          136: 108,
          131: 109,
          120: $V9,
          121: $Va,
          132: $Vd,
          133: $Ve,
          134: $Vf,
          135: $Vg,
          137: $Vh,
          138: $Vi,
          139: $Vj,
          140: $Vk
        }), {
          30: [1, 359]
        }, {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          31: 304,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          48: 151,
          50: 159,
          51: $Vd1,
          55: 153,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 183,
          74: 181,
          77: 179,
          79: 176,
          81: 174,
          83: 167,
          85: 160,
          87: 154,
          89: 152,
          106: [2, 247],
          109: 32,
          110: 31,
          115: 305,
          120: $V9,
          121: $Va,
          125: $V92,
          126: 30,
          127: 34,
          128: $Vc,
          131: 35,
          132: $Vd,
          133: $Ve,
          134: $Vf,
          135: $Vg,
          136: 33,
          137: $Vh,
          138: $Vi,
          139: $Vj,
          140: $Vk,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK,
          192: 362,
          200: 360,
          201: 361
        }, o($Vc2, [2, 244]), o($Vc2, [2, 245]), o($Vy1, [2, 253]), o($VA1, [2, 91]), {
          23: [1, 363],
          49: $Vz1
        }, o($VF1, [2, 87], {
          86: $VG1
        }), {
          36: [1, 364]
        }, {
          36: [2, 30],
          49: $Vz1
        }, o($VH1, [2, 27]), o($VH1, [2, 33]), o($VH1, $V41, {
          30: [1, 365]
        }), {
          32: [1, 366],
          49: [1, 367]
        }, {
          32: [1, 368]
        }, {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          32: [2, 46],
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: [1, 370],
          48: 369,
          50: 202,
          51: $Vd1,
          55: 153,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 183,
          74: 181,
          77: 179,
          79: 176,
          81: 174,
          83: 167,
          85: 160,
          87: 154,
          89: 152,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, o($VJ1, [2, 85], {
          84: $VK1
        }), o($VL1, [2, 83], {
          82: $VM1
        }), o($VH1, [2, 23]), o($VN1, [2, 81], {
          80: $VO1
        }), o($VP1, [2, 79], {
          78: $VQ1
        }), o($Vw1, [2, 39]), o($VR1, [2, 77], {
          75: $VS1,
          76: $VT1
        }), o($VV1, [2, 74], {
          70: $VW1,
          71: $VX1,
          72: $VY1,
          73: $VZ1
        }), o($VV1, [2, 75], {
          70: $VW1,
          71: $VX1,
          72: $VY1,
          73: $VZ1
        }), o($V_1, [2, 69], {
          67: $V$1,
          68: $V02
        }), o($V_1, [2, 70], {
          67: $V$1,
          68: $V02
        }), o($V_1, [2, 71], {
          67: $V$1,
          68: $V02
        }), o($V_1, [2, 72], {
          67: $V$1,
          68: $V02
        }), o($V12, [2, 66], {
          57: $V22,
          58: $V32
        }), o($V12, [2, 67], {
          57: $V22,
          58: $V32
        }), o($V42, [2, 63], {
          62: $V52,
          63: $V62,
          64: $V72
        }), o($V42, [2, 64], {
          62: $V52,
          63: $V62,
          64: $V72
        }), o($VB1, [2, 59]), o($VB1, [2, 60]), o($VB1, [2, 61]), o($VR, [2, 128], {
          92: [1, 371]
        }), {
          36: [1, 372]
        }, o($VR, [2, 132]), {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          50: 202,
          51: $Vd1,
          55: 201,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 183,
          74: 181,
          77: 179,
          79: 176,
          81: 174,
          83: 167,
          85: 160,
          87: 154,
          89: 200,
          103: 373,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          48: 286,
          50: 202,
          51: $Vd1,
          55: 153,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 183,
          74: 181,
          77: 179,
          79: 176,
          81: 174,
          83: 167,
          85: 160,
          87: 154,
          89: 152,
          109: 32,
          110: 31,
          124: 374,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, o($VR, [2, 136], {
          92: [1, 375]
        }), o($Vw1, [2, 145]), o($Vw1, [2, 147]), o($V21, [2, 203]), o($V82, [2, 207]), {
          19: 296,
          20: 81,
          21: $VM,
          25: $VN,
          26: $VO,
          175: 376
        }, {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          50: 202,
          51: $Vd1,
          55: 201,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 183,
          74: 181,
          77: 179,
          79: 176,
          81: 174,
          83: 167,
          85: 160,
          87: 154,
          89: 200,
          103: 377,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          31: 137,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          48: 151,
          50: 159,
          51: $Vd1,
          55: 153,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 183,
          74: 181,
          77: 179,
          79: 176,
          81: 174,
          83: 167,
          85: 160,
          87: 154,
          89: 152,
          104: 135,
          105: 150,
          106: $Vi1,
          107: 16,
          108: $V8,
          109: 32,
          110: 31,
          111: 23,
          112: 25,
          113: 26,
          115: 27,
          120: $V9,
          121: $Va,
          123: 24,
          125: $Vb,
          126: 30,
          127: 34,
          128: $Vc,
          131: 35,
          132: $Vd,
          133: $Ve,
          134: $Vf,
          135: $Vg,
          136: 33,
          137: $Vh,
          138: $Vi,
          139: $Vj,
          140: $Vk,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK,
          170: $Vj1,
          176: 128,
          177: 379,
          178: 125,
          179: 126,
          180: 129,
          181: 130,
          182: 131,
          183: 132,
          184: 133,
          185: 134,
          189: $Vk1,
          190: 378,
          193: $Vl1,
          194: $Vm1,
          195: $Vn1,
          196: $Vo1,
          197: $Vp1,
          198: $Vq1,
          202: $Vr1,
          203: $Vs1,
          204: $Vt1,
          205: $Vu1,
          206: $Vv1
        }, {
          170: $Vj1,
          178: 380
        }, {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          31: 137,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          48: 151,
          50: 159,
          51: $Vd1,
          55: 153,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 183,
          74: 181,
          77: 179,
          79: 176,
          81: 174,
          83: 167,
          85: 160,
          87: 154,
          89: 152,
          104: 135,
          105: 150,
          106: $Vi1,
          107: 16,
          108: $V8,
          109: 32,
          110: 31,
          111: 23,
          112: 25,
          113: 26,
          115: 27,
          120: $V9,
          121: $Va,
          123: 24,
          125: $Vb,
          126: 30,
          127: 34,
          128: $Vc,
          131: 35,
          132: $Vd,
          133: $Ve,
          134: $Vf,
          135: $Vg,
          136: 33,
          137: $Vh,
          138: $Vi,
          139: $Vj,
          140: $Vk,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK,
          170: $VQ,
          176: 128,
          179: 383,
          180: 129,
          181: 130,
          182: 131,
          183: 132,
          184: 133,
          185: 134,
          187: 381,
          188: 382,
          189: $Vk1,
          193: $Vl1,
          194: $Vm1,
          195: $Vn1,
          196: $Vo1,
          197: $Vp1,
          198: $Vq1,
          202: $Vr1,
          203: $Vs1,
          204: $Vt1,
          205: $Vu1,
          206: $Vv1
        }, {
          92: [1, 384]
        }, {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          31: 385,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          48: 151,
          50: 202,
          51: $Vd1,
          55: 153,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 183,
          74: 181,
          77: 179,
          79: 176,
          81: 174,
          83: 167,
          85: 160,
          87: 154,
          89: 152,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, {
          32: [1, 386]
        }, {
          106: [1, 387]
        }, {
          106: [2, 246]
        }, {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          48: 388,
          50: 202,
          51: $Vd1,
          55: 153,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 183,
          74: 181,
          77: 179,
          79: 176,
          81: 174,
          83: 167,
          85: 160,
          87: 154,
          89: 152,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, o($VH1, [2, 25]), o($VU1, [2, 49]), o($VH1, [2, 43]), {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          48: 389,
          50: 202,
          51: $Vd1,
          55: 153,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 183,
          74: 181,
          77: 179,
          79: 176,
          81: 174,
          83: 167,
          85: 160,
          87: 154,
          89: 152,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, o($VH1, [2, 44]), o($Vw1, [2, 47]), o($Va2, $V31, {
          32: [2, 45]
        }), {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          48: 286,
          50: 202,
          51: $Vd1,
          55: 153,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 183,
          74: 181,
          77: 179,
          79: 176,
          81: 174,
          83: 167,
          85: 160,
          87: 154,
          89: 152,
          109: 32,
          110: 31,
          124: 390,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, o($VR, [2, 129], {
          92: [1, 391]
        }), {
          36: [1, 392]
        }, o($VR, [2, 137]), {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          48: 286,
          50: 202,
          51: $Vd1,
          55: 153,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 183,
          74: 181,
          77: 179,
          79: 176,
          81: 174,
          83: 167,
          85: 160,
          87: 154,
          89: 152,
          109: 32,
          110: 31,
          124: 393,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, o($VR, [2, 209]), {
          36: [1, 394]
        }, o($Vy1, [2, 233]), o($Vx1, [2, 235], {
          191: [1, 395]
        }), o($Vy1, [2, 238]), o($Vy1, [2, 241]), o($Vy1, [2, 225]), o($Vy1, [2, 226]), {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          48: 286,
          50: 202,
          51: $Vd1,
          55: 153,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 183,
          74: 181,
          77: 179,
          79: 176,
          81: 174,
          83: 167,
          85: 160,
          87: 154,
          89: 152,
          109: 32,
          110: 31,
          124: 396,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, {
          32: [1, 397],
          49: $Vz1
        }, {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          31: 137,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          48: 151,
          50: 159,
          51: $Vd1,
          55: 153,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 183,
          74: 181,
          77: 179,
          79: 176,
          81: 174,
          83: 167,
          85: 160,
          87: 154,
          89: 152,
          104: 135,
          105: 150,
          106: $Vi1,
          107: 16,
          108: $V8,
          109: 32,
          110: 31,
          111: 23,
          112: 25,
          113: 26,
          115: 27,
          120: $V9,
          121: $Va,
          123: 24,
          125: $Vb,
          126: 30,
          127: 34,
          128: $Vc,
          131: 35,
          132: $Vd,
          133: $Ve,
          134: $Vf,
          135: $Vg,
          136: 33,
          137: $Vh,
          138: $Vi,
          139: $Vj,
          140: $Vk,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK,
          170: $VQ,
          176: 128,
          179: 383,
          180: 129,
          181: 130,
          182: 131,
          183: 132,
          184: 133,
          185: 134,
          187: 398,
          188: 382,
          189: $Vk1,
          193: $Vl1,
          194: $Vm1,
          195: $Vn1,
          196: $Vo1,
          197: $Vp1,
          198: $Vq1,
          202: $Vr1,
          203: $Vs1,
          204: $Vt1,
          205: $Vu1,
          206: $Vv1
        }, {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          31: 399,
          32: [2, 248],
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          48: 151,
          50: 202,
          51: $Vd1,
          55: 153,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 183,
          74: 181,
          77: 179,
          79: 176,
          81: 174,
          83: 167,
          85: 160,
          87: 154,
          89: 152,
          109: 32,
          110: 31,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, o($VA1, [2, 89]), o($Vw1, [2, 48]), o($VR, [2, 130]), {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          48: 286,
          50: 202,
          51: $Vd1,
          55: 153,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 183,
          74: 181,
          77: 179,
          79: 176,
          81: 174,
          83: 167,
          85: 160,
          87: 154,
          89: 152,
          109: 32,
          110: 31,
          124: 400,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK
        }, o($Vw1, [2, 116]), o($VR, [2, 138]), o($VR, [2, 211]), {
          10: $V71,
          20: 168,
          21: $V6,
          25: $VN,
          26: $VO,
          27: 161,
          28: $V81,
          29: $V91,
          30: $Va1,
          31: 137,
          33: 155,
          37: 162,
          39: $Vb1,
          40: $Vc1,
          41: 173,
          42: 175,
          44: 177,
          45: 178,
          46: 180,
          47: $V7,
          48: 151,
          50: 159,
          51: $Vd1,
          55: 153,
          56: 158,
          57: $Ve1,
          58: $Vf1,
          59: $Vg1,
          60: $Vh1,
          61: 186,
          65: 185,
          66: 184,
          69: 183,
          74: 181,
          77: 179,
          79: 176,
          81: 174,
          83: 167,
          85: 160,
          87: 154,
          89: 152,
          104: 135,
          105: 150,
          106: $Vi1,
          107: 16,
          108: $V8,
          109: 32,
          110: 31,
          111: 23,
          112: 25,
          113: 26,
          115: 27,
          120: $V9,
          121: $Va,
          123: 24,
          125: $Vb,
          126: 30,
          127: 34,
          128: $Vc,
          131: 35,
          132: $Vd,
          133: $Ve,
          134: $Vf,
          135: $Vg,
          136: 33,
          137: $Vh,
          138: $Vi,
          139: $Vj,
          140: $Vk,
          141: 36,
          142: 51,
          143: 52,
          144: $Vl,
          145: $Vm,
          146: $Vn,
          147: $Vo,
          148: $Vp,
          149: $Vq,
          150: $Vr,
          151: $Vs,
          152: $Vt,
          153: $Vu,
          154: $Vv,
          155: $Vw,
          156: $Vx,
          157: $Vy,
          158: $Vz,
          159: $VA,
          160: $VB,
          161: $VC,
          162: $VD,
          163: $VE,
          164: $VF,
          165: $VG,
          166: $VH,
          167: $VI,
          168: $VJ,
          169: $VK,
          170: $Vj1,
          176: 128,
          177: 401,
          178: 125,
          179: 126,
          180: 129,
          181: 130,
          182: 131,
          183: 132,
          184: 133,
          185: 134,
          189: $Vk1,
          193: $Vl1,
          194: $Vm1,
          195: $Vn1,
          196: $Vo1,
          197: $Vp1,
          198: $Vq1,
          202: $Vr1,
          203: $Vs1,
          204: $Vt1,
          205: $Vu1,
          206: $Vv1
        }, o($Vb2, [2, 237]), {
          106: [1, 402]
        }, o($Vy1, [2, 243]), {
          32: [2, 249],
          49: $Vz1
        }, o($VR, [2, 131]), o($Vy1, [2, 234]), o($Vy1, [2, 242])],
        defaultActions: {
          5: [2, 1],
          200: [2, 105],
          362: [2, 246]
        },
        parseError: function parseError(str, hash) {
          if (hash.recoverable) {
            this.trace(str);
          } else {
            throw new Error(str);
          }
        },
        parse: function parse(input) {
          var self = this,
              stack = [0],
              tstack = [],
              vstack = [null],
              lstack = [],
              table = this.table,
              yytext = '',
              yylineno = 0,
              yyleng = 0,
              recovering = 0,
              TERROR = 2,
              EOF = 1;
          var args = lstack.slice.call(arguments, 1);
          var lexer = Object.create(this.lexer);
          var sharedState = {
            yy: {}
          };

          for (var k in this.yy) {
            if (Object.prototype.hasOwnProperty.call(this.yy, k)) {
              sharedState.yy[k] = this.yy[k];
            }
          }

          lexer.setInput(input, sharedState.yy);
          sharedState.yy.lexer = lexer;
          sharedState.yy.parser = this;

          if (typeof lexer.yylloc == 'undefined') {
            lexer.yylloc = {};
          }

          var yyloc = lexer.yylloc;
          lstack.push(yyloc);
          var ranges = lexer.options && lexer.options.ranges;

          if (typeof sharedState.yy.parseError === 'function') {
            this.parseError = sharedState.yy.parseError;
          } else {
            this.parseError = Object.getPrototypeOf(this).parseError;
          }

          function popStack(n) {
            stack.length = stack.length - 2 * n;
            vstack.length = vstack.length - n;
            lstack.length = lstack.length - n;
          }

          function lex() {
            var token;
            token = lexer.lex() || EOF;

            if (typeof token !== 'number') {
              token = self.symbols_[token] || token;
            }

            return token;
          }

          var symbol,
              preErrorSymbol,
              state,
              action,
              a,
              r,
              yyval = {},
              p,
              len,
              newState,
              expected;

          while (true) {
            state = stack[stack.length - 1];

            if (this.defaultActions[state]) {
              action = this.defaultActions[state];
            } else {
              if (symbol === null || typeof symbol == 'undefined') {
                symbol = lex();
              }

              action = table[state] && table[state][symbol];
            }

            if (typeof action === 'undefined' || !action.length || !action[0]) {
              var errStr = '';
              expected = [];

              for (p in table[state]) {
                if (this.terminals_[p] && p > TERROR) {
                  expected.push('\'' + this.terminals_[p] + '\'');
                }
              }

              if (lexer.showPosition) {
                errStr = 'Parse error on line ' + (yylineno + 1) + ':\n' + lexer.showPosition() + '\nExpecting ' + expected.join(', ') + ', got \'' + (this.terminals_[symbol] || symbol) + '\'';
              } else {
                errStr = 'Parse error on line ' + (yylineno + 1) + ': Unexpected ' + (symbol == EOF ? 'end of input' : '\'' + (this.terminals_[symbol] || symbol) + '\'');
              }

              this.parseError(errStr, {
                text: lexer.match,
                token: this.terminals_[symbol] || symbol,
                line: lexer.yylineno,
                loc: yyloc,
                expected: expected
              });
            }

            if (action[0] instanceof Array && action.length > 1) {
              throw new Error('Parse Error: multiple actions possible at state: ' + state + ', token: ' + symbol);
            }

            switch (action[0]) {
              case 1:
                stack.push(symbol);
                vstack.push(lexer.yytext);
                lstack.push(lexer.yylloc);
                stack.push(action[1]);
                symbol = null;

                if (!preErrorSymbol) {
                  yyleng = lexer.yyleng;
                  yytext = lexer.yytext;
                  yylineno = lexer.yylineno;
                  yyloc = lexer.yylloc;

                  if (recovering > 0) {
                    recovering--;
                  }
                } else {
                  symbol = preErrorSymbol;
                  preErrorSymbol = null;
                }

                break;

              case 2:
                len = this.productions_[action[1]][1];
                yyval.$ = vstack[vstack.length - len];
                yyval._$ = {
                  first_line: lstack[lstack.length - (len || 1)].first_line,
                  last_line: lstack[lstack.length - 1].last_line,
                  first_column: lstack[lstack.length - (len || 1)].first_column,
                  last_column: lstack[lstack.length - 1].last_column
                };

                if (ranges) {
                  yyval._$.range = [lstack[lstack.length - (len || 1)].range[0], lstack[lstack.length - 1].range[1]];
                }

                r = this.performAction.apply(yyval, [yytext, yyleng, yylineno, sharedState.yy, action[1], vstack, lstack].concat(args));

                if (typeof r !== 'undefined') {
                  return r;
                }

                if (len) {
                  stack = stack.slice(0, -1 * len * 2);
                  vstack = vstack.slice(0, -1 * len);
                  lstack = lstack.slice(0, -1 * len);
                }

                stack.push(this.productions_[action[1]][0]);
                vstack.push(yyval.$);
                lstack.push(yyval._$);
                newState = table[stack[stack.length - 2]][stack[stack.length - 1]];
                stack.push(newState);
                break;

              case 3:
                return true;
            }
          }

          return true;
        }
      };

      function Parser() {
        this.yy = {};
      }

      Parser.prototype = parser;
      parser.Parser = Parser;
      return new Parser();
    }();

    if (typeof commonjsRequire !== 'undefined' && 'object' !== 'undefined') {
      exports.parser = parser;
      exports.Parser = parser.Parser;

      exports.parse = function () {
        return parser.parse.apply(parser, arguments);
      };
    }
    /* generated by jison-lex 0.3.4 */


    var lexer = function () {
      var lexer = {
        EOF: 1,
        parseError: function parseError(str, hash) {
          if (this.yy.parser) {
            this.yy.parser.parseError(str, hash);
          } else {
            throw new Error(str);
          }
        },
        // resets the lexer, sets new input
        setInput: function setInput(input, yy) {
          this.yy = yy || this.yy || {};
          this._input = input;
          this._more = this._backtrack = this.done = false;
          this.yylineno = this.yyleng = 0;
          this.yytext = this.matched = this.match = '';
          this.conditionStack = ['INITIAL'];
          this.yylloc = {
            first_line: 1,
            first_column: 0,
            last_line: 1,
            last_column: 0
          };

          if (this.options.ranges) {
            this.yylloc.range = [0, 0];
          }

          this.offset = 0;
          return this;
        },
        // consumes and returns one char from the input
        input: function input() {
          var ch = this._input[0];
          this.yytext += ch;
          this.yyleng++;
          this.offset++;
          this.match += ch;
          this.matched += ch;
          var lines = ch.match(/(?:\r\n?|\n).*/g);

          if (lines) {
            this.yylineno++;
            this.yylloc.last_line++;
          } else {
            this.yylloc.last_column++;
          }

          if (this.options.ranges) {
            this.yylloc.range[1]++;
          }

          this._input = this._input.slice(1);
          return ch;
        },
        // unshifts one char (or a string) into the input
        unput: function unput(ch) {
          var len = ch.length;
          var lines = ch.split(/(?:\r\n?|\n)/g);
          this._input = ch + this._input;
          this.yytext = this.yytext.substr(0, this.yytext.length - len); //this.yyleng -= len;

          this.offset -= len;
          var oldLines = this.match.split(/(?:\r\n?|\n)/g);
          this.match = this.match.substr(0, this.match.length - 1);
          this.matched = this.matched.substr(0, this.matched.length - 1);

          if (lines.length - 1) {
            this.yylineno -= lines.length - 1;
          }

          var r = this.yylloc.range;
          this.yylloc = {
            first_line: this.yylloc.first_line,
            last_line: this.yylineno + 1,
            first_column: this.yylloc.first_column,
            last_column: lines ? (lines.length === oldLines.length ? this.yylloc.first_column : 0) + oldLines[oldLines.length - lines.length].length - lines[0].length : this.yylloc.first_column - len
          };

          if (this.options.ranges) {
            this.yylloc.range = [r[0], r[0] + this.yyleng - len];
          }

          this.yyleng = this.yytext.length;
          return this;
        },
        // When called from action, caches matched text and appends it on next action
        more: function more() {
          this._more = true;
          return this;
        },
        // When called from action, signals the lexer that this rule fails to match the input, so the next matching rule (regex) should be tested instead.
        reject: function reject() {
          if (this.options.backtrack_lexer) {
            this._backtrack = true;
          } else {
            return this.parseError('Lexical error on line ' + (this.yylineno + 1) + '. You can only invoke reject() in the lexer when the lexer is of the backtracking persuasion (options.backtrack_lexer = true).\n' + this.showPosition(), {
              text: "",
              token: null,
              line: this.yylineno
            });
          }

          return this;
        },
        // retain first n characters of the match
        less: function less(n) {
          this.unput(this.match.slice(n));
        },
        // displays already matched input, i.e. for error messages
        pastInput: function pastInput() {
          var past = this.matched.substr(0, this.matched.length - this.match.length);
          return (past.length > 20 ? '...' : '') + past.substr(-20).replace(/\n/g, "");
        },
        // displays upcoming input, i.e. for error messages
        upcomingInput: function upcomingInput() {
          var next = this.match;

          if (next.length < 20) {
            next += this._input.substr(0, 20 - next.length);
          }

          return (next.substr(0, 20) + (next.length > 20 ? '...' : '')).replace(/\n/g, "");
        },
        // displays the character position where the lexing error occurred, i.e. for error messages
        showPosition: function showPosition() {
          var pre = this.pastInput();
          var c = new Array(pre.length + 1).join("-");
          return pre + this.upcomingInput() + "\n" + c + "^";
        },
        // test the lexed token: return FALSE when not a match, otherwise return token
        test_match: function test_match(match, indexed_rule) {
          var token, lines, backup;

          if (this.options.backtrack_lexer) {
            // save context
            backup = {
              yylineno: this.yylineno,
              yylloc: {
                first_line: this.yylloc.first_line,
                last_line: this.last_line,
                first_column: this.yylloc.first_column,
                last_column: this.yylloc.last_column
              },
              yytext: this.yytext,
              match: this.match,
              matches: this.matches,
              matched: this.matched,
              yyleng: this.yyleng,
              offset: this.offset,
              _more: this._more,
              _input: this._input,
              yy: this.yy,
              conditionStack: this.conditionStack.slice(0),
              done: this.done
            };

            if (this.options.ranges) {
              backup.yylloc.range = this.yylloc.range.slice(0);
            }
          }

          lines = match[0].match(/(?:\r\n?|\n).*/g);

          if (lines) {
            this.yylineno += lines.length;
          }

          this.yylloc = {
            first_line: this.yylloc.last_line,
            last_line: this.yylineno + 1,
            first_column: this.yylloc.last_column,
            last_column: lines ? lines[lines.length - 1].length - lines[lines.length - 1].match(/\r?\n?/)[0].length : this.yylloc.last_column + match[0].length
          };
          this.yytext += match[0];
          this.match += match[0];
          this.matches = match;
          this.yyleng = this.yytext.length;

          if (this.options.ranges) {
            this.yylloc.range = [this.offset, this.offset += this.yyleng];
          }

          this._more = false;
          this._backtrack = false;
          this._input = this._input.slice(match[0].length);
          this.matched += match[0];
          token = this.performAction.call(this, this.yy, this, indexed_rule, this.conditionStack[this.conditionStack.length - 1]);

          if (this.done && this._input) {
            this.done = false;
          }

          if (token) {
            return token;
          } else if (this._backtrack) {
            // recover context
            for (var k in backup) {
              this[k] = backup[k];
            }

            return false; // rule action called reject() implying the next rule should be tested instead.
          }

          return false;
        },
        // return next match in input
        next: function next() {
          if (this.done) {
            return this.EOF;
          }

          if (!this._input) {
            this.done = true;
          }

          var token, match, tempMatch, index;

          if (!this._more) {
            this.yytext = '';
            this.match = '';
          }

          var rules = this._currentRules();

          for (var i = 0; i < rules.length; i++) {
            tempMatch = this._input.match(this.rules[rules[i]]);

            if (tempMatch && (!match || tempMatch[0].length > match[0].length)) {
              match = tempMatch;
              index = i;

              if (this.options.backtrack_lexer) {
                token = this.test_match(tempMatch, rules[i]);

                if (token !== false) {
                  return token;
                } else if (this._backtrack) {
                  match = false;
                  continue; // rule action called reject() implying a rule MISmatch.
                } else {
                  // else: this is a lexer rule which consumes input without producing a token (e.g. whitespace)
                  return false;
                }
              } else if (!this.options.flex) {
                break;
              }
            }
          }

          if (match) {
            token = this.test_match(match, rules[index]);

            if (token !== false) {
              return token;
            } // else: this is a lexer rule which consumes input without producing a token (e.g. whitespace)


            return false;
          }

          if (this._input === "") {
            return this.EOF;
          } else {
            return this.parseError('Lexical error on line ' + (this.yylineno + 1) + '. Unrecognized text.\n' + this.showPosition(), {
              text: "",
              token: null,
              line: this.yylineno
            });
          }
        },
        // return next match that has a token
        lex: function lex() {
          var r = this.next();

          if (r) {
            return r;
          } else {
            return this.lex();
          }
        },
        // activates a new lexer condition state (pushes the new lexer condition state onto the condition stack)
        begin: function begin(condition) {
          this.conditionStack.push(condition);
        },
        // pop the previously active lexer condition state off the condition stack
        popState: function popState() {
          var n = this.conditionStack.length - 1;

          if (n > 0) {
            return this.conditionStack.pop();
          } else {
            return this.conditionStack[0];
          }
        },
        // produce the lexer rule set which is active for the currently active lexer condition state
        _currentRules: function _currentRules() {
          if (this.conditionStack.length && this.conditionStack[this.conditionStack.length - 1]) {
            return this.conditions[this.conditionStack[this.conditionStack.length - 1]].rules;
          } else {
            return this.conditions["INITIAL"].rules;
          }
        },
        // return the currently active lexer condition state; when an index argument is provided it produces the N-th previous condition state, if available
        topState: function topState(n) {
          n = this.conditionStack.length - 1 - Math.abs(n || 0);

          if (n >= 0) {
            return this.conditionStack[n];
          } else {
            return "INITIAL";
          }
        },
        // alias for begin(condition)
        pushState: function pushState(condition) {
          this.begin(condition);
        },
        // return the number of states currently on the stack
        stateStackSize: function stateStackSize() {
          return this.conditionStack.length;
        },
        options: {
          "moduleName": ""
        },
        performAction: function anonymous(yy, yy_, $avoiding_name_collisions, YY_START) {
          var YYSTATE = YY_START;

          switch ($avoiding_name_collisions) {
            case 0:
              ;
              break;

            case 1:
              break;

            case 2:
              this.begin('PP');
              return 'VERSION';
              break;

            case 3:
              this.begin('PP');
              return 'EXTENSION';
              break;

            case 4:
              /* Eat characters until the first digit is
               * encountered
               */
              var ptr = 0;

              while (yy_.yytext.slice(0, 1) < '0' || yy_.yytext.slice(0, 1) > '9') {
                ptr++;
              }
              /* Subtract one from the line number because
               * yy_.yylineno is zero-based instead of
               * one-based.
               */


              yy_.yylineno = parseInt(yy_.yytext.slice(0, 1), 10) - 1;
              yy_.yylloc.source = parseInt(yy_.yytext.slice(0), 10);
              break;

            case 5:
              /* Eat characters until the first digit is
               * encountered
               */
              var ptr = 0;

              while (yy_.yytext.slice(0, 1) < '0' || yy_.yytext.slice(0, 1) > '9') {
                ptr++;
              }
              /* Subtract one from the line number because
               * yy_.yylineno is zero-based instead of
               * one-based.
               */


              yy_.yylineno = parseInt(yy_.yytext.slice(0, 1), 10) - 1;
              break;

            case 6:
              this.begin('PP');
              return 'PRAGMA_DEBUG_ON';
              break;

            case 7:
              this.begin('PP');
              return 'PRAGMA_DEBUG_OFF';
              break;

            case 8:
              this.begin('PP');
              return 'PRAGMA_OPTIMIZE_ON';
              break;

            case 9:
              this.begin('PP');
              return 'PRAGMA_OPTIMIZE_OFF';
              break;

            case 10:
              this.begin('PP');
              return 'PRAGMA_INVARIANT_ALL';
              break;

            case 11:
              this.begin('PRAGMA');
              break;

            case 12:
              this.begin('INITIAL');
              yy_.yylineno++;
              yycolumn = 0;
              break;

            case 13:
              break;

            case 14:
              break;

            case 15:
              break;

            case 16:
              return ":";
              break;

            case 17:
              yylval.identifier = strdup(yy_.yytext);
              return 'IDENTIFIER';
              break;

            case 18:
              yylval.n = parseInt(yy_.yytext);
              return 'INTCONSTANT';
              break;

            case 19:
              this.begin('INITIAL');
              yy_.yylineno++;
              yycolumn = 0;
              return 'EOL';
              break;

            case 20:
              /*yy_.yylineno++; yycolumn = 0;*/
              break;

            case 21:
              return 'ATTRIBUTE';
              break;

            case 22:
              return 'CONST';
              break;

            case 23:
              return 'BOOL';
              break;

            case 24:
              return 'FLOAT';
              break;

            case 25:
              return 'INT';
              break;

            case 26:
              return 'BREAK';
              break;

            case 27:
              return 'CONTINUE';
              break;

            case 28:
              return 'DO';
              break;

            case 29:
              return 'WHILE';
              break;

            case 30:
              return 'ELSE';
              break;

            case 31:
              return 'FOR';
              break;

            case 32:
              return 'IF';
              break;

            case 33:
              return 'DISCARD';
              break;

            case 34:
              return 'RETURN';
              break;

            case 35:
              return 'DEBUGGER';
              break;

            case 36:
              return 'BVEC2';
              break;

            case 37:
              return 'BVEC3';
              break;

            case 38:
              return 'BVEC4';
              break;

            case 39:
              return 'IVEC2';
              break;

            case 40:
              return 'IVEC3';
              break;

            case 41:
              return 'IVEC4';
              break;

            case 42:
              return 'VEC2';
              break;

            case 43:
              return 'VEC3';
              break;

            case 44:
              return 'VEC4';
              break;

            case 45:
              return 'MAT2X2';
              break;

            case 46:
              return 'MAT3X3';
              break;

            case 47:
              return 'MAT4X4';
              break;

            case 48:
              return 'IN';
              break;

            case 49:
              return 'OUT';
              break;

            case 50:
              return 'INOUT';
              break;

            case 51:
              return 'UNIFORM';
              break;

            case 52:
              return 'VARYING';
              break;

            case 53:
              return 'INVARIANT';
              break;

            case 54:
              return 'FLAT';
              break;

            case 55:
              return 'SMOOTH';
              break;

            case 56:
              return 'SAMPLER1D';
              break;

            case 57:
              return 'SAMPLER2D';
              break;

            case 58:
              return 'SAMPLER3D';
              break;

            case 59:
              return 'SAMPLERCUBE';
              break;

            case 60:
              return 'SAMPLER1DSHADOW';
              break;

            case 61:
              return 'SAMPLER2DSHADOW';
              break;

            case 62:
              return 'STRUCT';
              break;

            case 63:
              return 'VOID';
              break;

            case 64:
              /*copy manually*/
              break;

            case 65:
              return '++';
              break;

            case 66:
              return '--';
              break;

            case 67:
              return '<=';
              break;

            case 68:
              return '>=';
              break;

            case 69:
              return '==';
              break;

            case 70:
              return '!=';
              break;

            case 71:
              return '&&';
              break;

            case 72:
              return '||';
              break;

            case 73:
              return '^^';
              break;

            case 74:
              return '<<';
              break;

            case 75:
              return '>>';
              break;

            case 76:
              return '*=';
              break;

            case 77:
              return '/=';
              break;

            case 78:
              return '+=';
              break;

            case 79:
              return '%=';
              break;

            case 80:
              return '<<=';
              break;

            case 81:
              return '>>=';
              break;

            case 82:
              return '&=';
              break;

            case 83:
              return '^=';
              break;

            case 84:
              return '|=';
              break;

            case 85:
              return '-=';
              break;

            case 86:
              this.yylval = parseFloat(yy_.yytext);
              return 'FLOATCONSTANT';
              break;

            case 87:
              this.yylval = parseFloat(yy_.yytext);
              return 'FLOATCONSTANT';
              break;

            case 88:
              this.yylval = parseFloat(yy_.yytext);
              return 'FLOATCONSTANT';
              break;

            case 89:
              this.yylval = parseFloat(yy_.yytext);
              return 'FLOATCONSTANT';
              break;

            case 90:
              this.yylval = parseFloat(yy_.yytext);
              return 'FLOATCONSTANT';
              break;

            case 91:
              this.yylval = parseInt(yy_.yytext + 2, 16);
              return 'INTCONSTANT';
              break;

            case 92:
              this.yylval = parseInt(yy_.yytext, 8);
              return 'INTCONSTANT';
              break;

            case 93:
              this.yylval = parseInt(yy_.yytext);
              return 'INTCONSTANT';
              break;

            case 94:
              this.yylval = 1;
              return 'BOOLCONSTANT';
              break;

            case 95:
              this.yylval = 0;
              return 'BOOLCONSTANT';
              break;

            case 96:
              return 'ASM';
              break;

            case 97:
              return 'CLASS';
              break;

            case 98:
              return 'UNION';
              break;

            case 99:
              return 'ENUM';
              break;

            case 100:
              return 'TYPEDEF';
              break;

            case 101:
              return 'TEMPLATE';
              break;

            case 102:
              return 'THIS';
              break;

            case 103:
              return 'PACKED';
              break;

            case 104:
              return 'GOTO';
              break;

            case 105:
              return 'SWITCH';
              break;

            case 106:
              return 'DEFAULT';
              break;

            case 107:
              return 'INLINE';
              break;

            case 108:
              return 'NOINLINE';
              break;

            case 109:
              return 'VOLATILE';
              break;

            case 110:
              return 'PUBLIC';
              break;

            case 111:
              return 'STATIC';
              break;

            case 112:
              return 'EXTERN';
              break;

            case 113:
              return 'EXTERNAL';
              break;

            case 114:
              return 'INTERFACE';
              break;

            case 115:
              return 'LONG';
              break;

            case 116:
              return 'SHORT';
              break;

            case 117:
              return 'DOUBLE';
              break;

            case 118:
              return 'HALF';
              break;

            case 119:
              return 'FIXED';
              break;

            case 120:
              return 'UNSIGNED';
              break;

            case 121:
              return 'INPUT';
              break;

            case 122:
              return 'OUTPUT';
              break;

            case 123:
              return 'HVEC2';
              break;

            case 124:
              return 'HVEC3';
              break;

            case 125:
              return 'HVEC4';
              break;

            case 126:
              return 'DVEC2';
              break;

            case 127:
              return 'DVEC3';
              break;

            case 128:
              return 'DVEC4';
              break;

            case 129:
              return 'FVEC2';
              break;

            case 130:
              return 'FVEC3';
              break;

            case 131:
              return 'FVEC4';
              break;

            case 132:
              return 'SAMPLER2DRECT';
              break;

            case 133:
              return 'SAMPLER3DRECT';
              break;

            case 134:
              return 'SAMPLER2DRECTSHADOW';
              break;

            case 135:
              return 'SIZEOF';
              break;

            case 136:
              return 'CAST';
              break;

            case 137:
              return 'NAMESPACE';
              break;

            case 138:
              return 'USING';
              break;

            case 139:
              return 'LOWP';
              break;

            case 140:
              return 'MEDIUMP';
              break;

            case 141:
              return 'HIGHP';
              break;

            case 142:
              return 'PRECISION';
              break;

            case 143:
              yy.yylval = yy_.yytext;
              return yy.state.classify_identifier(yy.state, yy_.yytext);
              break;

            case 144:
              return yy_.yytext;
              break;

            case 145:
              return 'EOF';
              break;
          }
        },
        rules: [/^(?:[ \r\t]+)/, /^(?:[ \t]*#[ \t]*$)/, /^(?:[ \t]*#[ \t]*version\b)/, /^(?:[ \t]*#[ \t]*extension\b)/, /^(?:(^([ \t]*)([ \t]*))line([ \t]+)((([1-9][0-9]*)|([xX][0-9a-fA-F]+)|([0-7]*)))([ \t]+)((([1-9][0-9]*)|([xX][0-9a-fA-F]+)|([0-7]*)))([ \t]*)$)/, /^(?:(^([ \t]*)([ \t]*))line([ \t]+)((([1-9][0-9]*)|([xX][0-9a-fA-F]+)|([0-7]*)))([ \t]*)$)/, /^(?:([ \t]*)#([ \t]*)pragma([ \t]+)debug([ \t]*)\(([ \t]*)on([ \t]*)\))/, /^(?:([ \t]*)#([ \t]*)pragma([ \t]+)debug([ \t]*)\(([ \t]*)off([ \t]*)\))/, /^(?:([ \t]*)#([ \t]*)pragma([ \t]+)optimize([ \t]*)\(([ \t]*)on([ \t]*)\))/, /^(?:([ \t]*)#([ \t]*)pragma([ \t]+)optimize([ \t]*)\(([ \t]*)off([ \t]*)\))/, /^(?:([ \t]*)#([ \t]*)pragma([ \t]+)STDGL([ \t]+)invariant([ \t]*)\(([ \t]*)all([ \t]*)\))/, /^(?:([ \t]*)#([ \t]*)pragma([ \t]+))/, /^(?:[\n])/, /^(?:.)/, /^(?:\/\/[^\n]*)/, /^(?:[ \t\r]*)/, /^(?::)/, /^(?:[_a-zA-Z][_a-zA-Z0-9]*)/, /^(?:[1-9][0-9]*)/, /^(?:[\n])/, /^(?:[\n])/, /^(?:attribute\b)/, /^(?:const\b)/, /^(?:bool\b)/, /^(?:float\b)/, /^(?:int\b)/, /^(?:break\b)/, /^(?:continue\b)/, /^(?:do\b)/, /^(?:while\b)/, /^(?:else\b)/, /^(?:for\b)/, /^(?:if\b)/, /^(?:discard\b)/, /^(?:return\b)/, /^(?:debugger\b)/, /^(?:bvec2\b)/, /^(?:bvec3\b)/, /^(?:bvec4\b)/, /^(?:ivec2\b)/, /^(?:ivec3\b)/, /^(?:ivec4\b)/, /^(?:vec2\b)/, /^(?:vec3\b)/, /^(?:vec4\b)/, /^(?:mat2\b)/, /^(?:mat3\b)/, /^(?:mat4\b)/, /^(?:in\b)/, /^(?:out\b)/, /^(?:inout\b)/, /^(?:uniform\b)/, /^(?:varying\b)/, /^(?:invariant\b)/, /^(?:flat\b)/, /^(?:smooth\b)/, /^(?:sampler1D\b)/, /^(?:sampler2D\b)/, /^(?:sampler3D\b)/, /^(?:samplerCube\b)/, /^(?:sampler1DShadow\b)/, /^(?:sampler2DShadow\b)/, /^(?:struct\b)/, /^(?:void\b)/, /^(?:layout\b)/, /^(?:\+\+)/, /^(?:--)/, /^(?:<=)/, /^(?:>=)/, /^(?:==)/, /^(?:!=)/, /^(?:&&)/, /^(?:\|\|)/, /^(?:\^\^)/, /^(?:<<)/, /^(?:>>)/, /^(?:\*=)/, /^(?:\/=)/, /^(?:\+=)/, /^(?:%=)/, /^(?:<<=)/, /^(?:>>=)/, /^(?:&=)/, /^(?:\^=)/, /^(?:\|=)/, /^(?:-=)/, /^(?:[0-9]+\.[0-9]+([eE][+-]?[0-9]+)?[fF]?)/, /^(?:\.[0-9]+([eE][+-]?[0-9]+)?[fF]?)/, /^(?:[0-9]+\.([eE][+-]?[0-9]+)?[fF]?)/, /^(?:[0-9]+[eE][+-]?[0-9]+[fF]?)/, /^(?:[0-9]+[fF])/, /^(?:0[xX][0-9a-fA-F]+)/, /^(?:0[0-7]*)/, /^(?:[1-9][0-9]*)/, /^(?:true\b)/, /^(?:false\b)/, /^(?:asm\b)/, /^(?:class\b)/, /^(?:union\b)/, /^(?:enum\b)/, /^(?:typedef\b)/, /^(?:template\b)/, /^(?:this\b)/, /^(?:packed\b)/, /^(?:goto\b)/, /^(?:switch\b)/, /^(?:default\b)/, /^(?:inline\b)/, /^(?:noinline\b)/, /^(?:volatile\b)/, /^(?:public\b)/, /^(?:static\b)/, /^(?:extern\b)/, /^(?:external\b)/, /^(?:interface\b)/, /^(?:long\b)/, /^(?:short\b)/, /^(?:double\b)/, /^(?:half\b)/, /^(?:fixed\b)/, /^(?:unsigned\b)/, /^(?:input\b)/, /^(?:output\b)/, /^(?:hvec2\b)/, /^(?:hvec3\b)/, /^(?:hvec4\b)/, /^(?:dvec2\b)/, /^(?:dvec3\b)/, /^(?:dvec4\b)/, /^(?:fvec2\b)/, /^(?:fvec3\b)/, /^(?:fvec4\b)/, /^(?:sampler2DRect\b)/, /^(?:sampler3DRect\b)/, /^(?:sampler2DRectShadow\b)/, /^(?:sizeof\b)/, /^(?:cast\b)/, /^(?:namespace\b)/, /^(?:using\b)/, /^(?:lowp\b)/, /^(?:mediump\b)/, /^(?:highp\b)/, /^(?:precision\b)/, /^(?:[_a-zA-Z][_a-zA-Z0-9]*)/, /^(?:.)/, /^(?:$)/],
        conditions: {
          "PRAGMA": {
            "rules": [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145],
            "inclusive": true
          },
          "PP": {
            "rules": [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145],
            "inclusive": true
          },
          "INITIAL": {
            "rules": [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145],
            "inclusive": true
          }
        }
      };
      return lexer;
    }();
    /*
    Copyright (c) 2011 Cimaron Shanahan
    
    Permission is hereby granted, free of charge, to any person obtaining a copy of
    this software and associated documentation files (the "Software"), to deal in
    the Software without restriction, including without limitation the rights to
    use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
    the Software, and to permit persons to whom the Software is furnished to do so,
    subject to the following conditions:
    
    The above copyright notice and this permission notice shall be included in all
    copies or substantial portions of the Software.
    
    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
    FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
    COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
    IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
    CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
    */

    /**
     * GLSL Parser Class
     */


    function GlslParser() {
      //Jison Global
      this.jison = parser;
      this.jison.lexer = lexer;
    }

    var proto = GlslParser.prototype;
    /**
     * Parse Program
     */

    proto.parse = function (state) {
      var result;
      this.jison.yy = {
        test: 1,
        state: state
      };

      try {
        this.jison.parse(state.getTranslationUnit());
      } catch (e) {
        state.addError(e.message, e.lineNumber, e.columnNumber);
        return false;
      }

      return true;
    };

    glsl.parser = new GlslParser();
    /**
     * External Parse
     *
     * @param   string   src        Source code
     * @param   object   options    Compilation options
     *
     * @return  object
     */

    glsl.parse = function (src, options) {
      var state, result, irs;
      state = new GlslState(options);
      state.setSource(src); //Preprocess

      result = this.preprocessor.process(state); //Parse into AST

      if (result) {
        result = this.parser.parse(state);
      }

      if (result) {
        state.status = true;
      }

      return state;
    };
    /*
    Copyright (c) 2011 Cimaron Shanahan
    
    Permission is hereby granted, free of charge, to any person obtaining a copy of
    this software and associated documentation files (the "Software"), to deal in
    the Software without restriction, including without limitation the rights to
    use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
    the Software, and to permit persons to whom the Software is furnished to do so,
    subject to the following conditions:
    
    The above copyright notice and this permission notice shall be included in all
    copies or substantial portions of the Software.
    
    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
    FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
    COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
    IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
    CONNECTION WITH THE SOFTWARE OR THE USE		 OR OTHER DEALINGS IN THE SOFTWARE.
    */

    /**
     * Constructs a program's object code from an ast and symbol table
     *
     * @param   string     The error message
     * @param   AstNode    The error AstNode
     *
     * @return  string
     */


    glsl.generate = function (state) {
      var irs, ast, i, main;
      irs = new Ir(state.options.target);
      ast = state.getAst();

      try {
        for (i = 0; i < ast.length; i++) {
          ast[i].ir(state, irs);
        }

        main = state.symbols.get_function('main'); //Accept main, but warn if params not void

        if (main.definition.join(",") !== "void") {
          state.addWarning("main() should take no parameters");
        }

        state.symbols.add_variable("<returned>", irs.getTemp(main.getType().slots));

        if (main.type != 'void') {
          state.addWarning("main() should be type void");
        }

        if (!main) {
          state.addError("main() is not defined");
          return false;
        }

        main.Ast.body.ir(state, irs);
      } catch (e) {
        if (!e.ir) {
          e.message = "compiler error: " + e.message;
        }

        state.addError(e.message, e.lineNumber, e.columnNumber);
        return false;
      }

      state.setIR(irs);
      return true;
    };
    /**
     * Constructs an error message
     *
     * @param   string     The error message
     * @param   AstNode    The error AstNode
     *
     * @return  string
     */


    AstNode.prototype.ir_error = function (message) {
      var e = new IrError();

      if (this.location) {
        e.lineNumber = this.location.first_line;
        e.columnNumber = this.location.first_column;
        e.message = message;
      }

      throw e;
    };
    /**
     * Default IR
     */


    AstNode.prototype.irx = function (state, irs) {
      this.ir_error(util.format("Can't generate ir for %s", this.typeOf()));
    };
    /**
     * Constructs a type specifier code block
     *
     * @param   object   state    parser state
     */


    AstTypeSpecifier.prototype.ir = function (state, irs) {
      if (this.is_precision_statement) {
        return;
      } //	this.ir_error("Cannot generate type specifier");

    };
    /**
     * Constructs a declaration list
     *
     * @param   object   state   GLSL state
     * @param   object   irs     IR representation
     */


    AstDeclaratorList.prototype.ir = function (state, irs) {
      var i;

      for (i = 0; i < this.declarations.length; i++) {
        this.declarations[i].ir(state, irs, this.type);
      }
    };
    /**
     * Constructs a declaration
     *
     * @param   object   state   GLSL state
     * @param   object   irs     IR representation
     */


    AstDeclaration.prototype.ir = function (state, irs, type) {
      var qualifier, name, entry, constant, assign, lhs, size;

      if (type.qualifier) {
        qualifier = type.qualifier;
      }

      name = this.identifier; //add symbol table entry

      entry = state.symbols.add_variable(name);
      entry.type = type.specifier.type_name;
      entry.qualifier = qualifier;

      if (qualifier.indexOf('uniform') !== -1) {
        entry.out = irs.getUniform(entry);
      } else if (qualifier.indexOf('attribute') !== -1) {
        entry.out = irs.getAttribute(entry);
      } else if (qualifier.indexOf('varying') !== -1) {
        entry.out = irs.getVarying(entry);
      } else {
        entry.out = irs.getTemp(entry.getType().slots);
      }

      constant = qualifier === 'const';

      if (this.is_array) {
        this.array_size.ir(state, irs);

        if (this.array_size.Type != 'int') {
          this.ir_error("array size must be an integer");
        }

        if (!this.array_size.Const) {
          this.ir_error("array size must be constant");
        }

        size = parseInt(this.array_size.Dest);

        if (size < 1) {
          this.ir_error("array size cannot be less than 1");
        }

        entry.size = size; //Change the type of the entry so that expressions without indexing will fail

        entry.base_type = entry.type;
        entry.type += '[]';
      }

      if (this.initializer) {
        //@todo: generate constants at compile time (this may be able to be taken care of in the generator)
        if (constant) {//entry.constant = this.initializer.Dest;
        } else {
          lhs = new AstExpression('ident');
          lhs.primary_expression.identifier = name;
          assign = new AstExpression('=', lhs, this.initializer);
          assign.setLocation(this.location);
          assign.ir(state, irs);
        }
      } else {
        if (constant) {
          this.ir_error("Declaring const without initialier");
        }
      }
    };
    /**
     * Constructs a function definition block
     *
     * @param   object   state   GLSL state
     * @param   object   irs     IR representation
     */


    AstFunctionDefinition.prototype.ir = function (state, irs) {
      //handle function proto
      this.proto_type.ir(state, irs);
      this.proto_type.entry.Ast = this;
    };
    /**
     * Constructs a function header code block
     *
     * @param   object   state   GLSL state
     * @param   object   irs     IR representation
     */


    AstFunction.prototype.ir = function (state, irs) {
      var i;

      if (this.parameters.length == 0) {
        this.entry.definition.push('void');
      } //generate param list


      for (i = 0; i < this.parameters.length; i++) {
        this.entry.definition.push(this.parameters[i].type.specifier.type_name);
      }
    };
    /**
     * Constructs a compound statement code block
     *
     * @param   object   state   GLSL state
     * @param   object   irs     IR representation
     */


    AstCompoundStatement.prototype.ir = function (state, irs) {
      var i, stmt, retd_entry, maybe_returned;
      retd_entry = state.symbols.get_variable("<returned>");
      maybe_returned = false;

      for (i = 0; i < this.statements.length; i++) {
        stmt = this.statements[i];
        stmt.ir(state, irs);

        if (stmt instanceof AstJumpStatement && stmt.mode == 'return') {
          //Returning from block, set return status, and skip following instructions in block (unreachable)
          retd_entry.Passed = true;
          irs.push(new IrInstruction("MOV", retd_entry.out + ".x", "1.0"));
          break;
        }

        if (!maybe_returned && retd_entry.Passed) {
          maybe_returned = true;
          irs.push(new IrInstruction("IF", retd_entry.out + ".x"));
        }
      }

      if (maybe_returned) {
        irs.push(new IrInstruction("ENDIF"));
      }
    };
    /**
     * Constructs an expression statement code block
     *
     * @param   object   state   GLSL state
     * @param   object   irs     IR representation
     */


    AstExpressionStatement.prototype.ir = function (state, irs) {
      this.expression.ir(state, irs);
    };
    /**
     * Constructs an expression code block
     *
     * @param   object   state   GLSL state
     * @param   object   irs     IR representation
     */


    AstExpression.prototype.ir = function (state, irs) {
      var i; //simple (variable, or value)

      for (i in this.primary_expression) {
        return this.ir_simple(state, irs);
      } //operator


      if (this.oper) {
        return this.ir_op(state, irs);
      } //cast


      if (this.constructor.name == 'AstTypeSpecifier') {
        this.Type = this.type_specifier;
        return;
      }

      this.ir_error("Could not translate unknown expression type");
    };
    /**
     * Constructs an operator expression code block
     *
     * @param   object   state   GLSL state
     * @param   object   irs     IR representation
     */


    AstExpression.prototype.ir_op = function (state, irs) {
      var se, temp, ops;

      if (se = this.subexpressions) {
        se[0] ? se[0].ir(state, irs) : null;
        se[1] ? se[1].ir(state, irs) : null;
        se[2] ? se[2].ir(state, irs) : null;
      }

      switch (this.oper) {
        //case '+=':
        case '=':
          this.ir_assign(state, irs);
          break;

        case 'POS':
          //useless
          this.Dest = se[0].Dest;
          this.Type = se[0].Type;
          break;

        case 'NEG':
          if (se[0].Dest.substring(0, 1) != '-') {
            this.Dest = "-" + se[0].Dest;
          } else {
            this.Dest = se[0].Dest.substring(1);
          }

          this.Type = se[0].Type;

          if (se[0].Const) {
            this.Const = se[0].Const;
          }

          break;
        //Arithmetic

        case '+':
        case '-':
        case '*':
        case '/':
        case '%':
        case '&':
        case '^':
        case '|':
        case '~':
        case '<<':
        case '>>':
          this.ir_generate(state, irs, 2, true);
          break;
        //Boolean

        case '<':
        case '>':
        case '<=':
        case '>=':
        case '==':
        case '!=':
        case '&&':
        case '^^':
        case '||':
          this.ir_generate(state, irs, 2);
          break;

        case '!':
          this.ir_generate(state, irs, 1);
          break;

        /*
        case '*=':
        case '/=':
        case '%=':
        case '+=':
        case '-=':
        case '<<=':
        case '>>=':
        case '&=':
        case '^=':
        case '|=':
        	break;
        case '?:':
        	break;
        */
        //Increment / Decrement

        case '++x':
        case '--x':
        case 'x++':
        case 'x--':
          this.ir_incdec(state, irs);
          break;
        //case '.': break;

        case '[]':
          this.ir_arr_index(state, irs);
          break;

        /*
        case 'VAR':
        case 'int':
        case 'float':
        case 'bool':
        	ir_expression_simple(e, se);
        	break;
        */

        default:
          this.ir_error(util.format("Could not translate unknown expression %s (%s)", this, this.oper));
      }
    };
    /**
     * Constructs an assignment expression
     *
     * @param   object   state   GLSL state
     * @param   object   irs     IR representation
     */


    AstExpression.prototype.ir_assign = function (state, irs, skip_comment
    /*, local*/
    ) {
      var cond, ir, temp, size, slots, swz, i, entry, lhs, rhs, com;
      lhs = this.subexpressions[0];
      rhs = this.subexpressions[1];

      if (lhs.Type != rhs.Type || rhs.Const) {
        this.ir_cast.apply(rhs, [state, irs, lhs.Type]);
      }

      this.Type = lhs.Type;

      if (lhs.Entry && lhs.Entry.constant) {
        this.ir_error(util.format("Cannot assign value to constant %s", lhs.Dest));
      }

      if (!skip_comment) {
        com = util.format("%s => %s %s <%s>", rhs.Dest, lhs.Type, lhs.Dest, lhs.toString());
        irs.push(new IrComment(com, this.location));
      }

      size = types[this.Type].size;
      slots = types[this.Type].slots; //get the swizzle for each slot

      swz = Ir.swizzles[0].substring(0, 4 - (slots * 4 - size) / slots); //all components are used up in all slots

      if (swz == Ir.swizzles[0]) {
        swz = "";
      }

      for (i = 0; i < slots; i++) {
        /*
        if (cond && !local) {
        	ir = new IR('CMP', se[0].Dest, "-" + cond, se[1].Dest, se[0].Dest);
        	ir.addOffset(i);
        	ir.setSwizzle(swz);
        	irs.push(ir);
        		} else {
        */
        ir = new IrInstruction('MOV', lhs.Dest, rhs.Dest);
        ir.addOffset(i);
        ir.setSwizzle(swz);
        irs.push(ir);
        /*
        }
        */
      }
    };
    /**
     * Constructs a cast operation
     */


    AstExpression.prototype.ir_cast = function (state, irs, type) {
      //Can cast to type?
      if (Type.canCast(this.Type, type)) {
        //Simple case, constant
        if (this.Const) {
          this.Dest = Type.castTo(this.Dest, this.Type, type);
          this.Type = type;
        } else {
          //@todo: generate cast instructions
          this.ir_error(util.format("Could not assign value of type %s to %s", this.Type, type));
        }
      } else {
        this.ir_error(util.format("Could not assign value of type %s to %s", this.Type, type));
      }
    };
    /**
     * Constructs a simple expression code block
     *
     * @param   object   state   GLSL state
     * @param   object   irs     IR representation
     */


    AstExpression.prototype.ir_simple = function (state, irs) {
      var name, entry, t;

      if (this.oper == '.') {
        this.ir_field(state, irs);
        return;
      } //identifier


      if (name = this.primary_expression.identifier) {
        //lookup identifier in symbol table
        entry = state.symbols.get_variable(name) || state.symbols.get_function(name);

        if (!entry
        /*|| !entry.type*/
        ) {
            this.ir_error(util.format("%s is undefined", name));
          }

        this.Type = entry.type;
        this.Entry = entry;

        if (entry.constant) {
          this.Dest = entry.constant;
        } else {
          this.Dest = entry.out;
        }

        return;
      } //float constant


      if (this.primary_expression.type == 'float') {
        this.Type = 'float';
        this.Dest = this.primary_expression.float_constant;
        this.Const = true;
        return;
      } //int constant


      if (this.primary_expression.type == 'int') {
        this.Type = 'int';
        this.Dest = this.primary_expression.int_constant;
        this.Const = true;
        return;
      }

      this.ir_error("Cannot translate unknown simple expression type");
    };
    /**
     * Constructs the code for an expression
     *
     * @param   object   state   GLSL state
     * @param   object   irs     IR representation
     */


    AstExpression.prototype.ir_generate = function (state, irs, len, arith) {
      var table, se, oprd_types, dest, i, j, def, match, comment, cnst;

      if (!(table = builtin.oper[this.oper])) {
        this.ir_error(util.format("Could not generate operation %s", this.oper));
      }

      se = this.subexpressions; //Fold constants

      if (state.options.opt.fold_constants && arith) {
        if (se[0].Const && se[1].Const) {
          cnst = eval(se[0].Dest + this.oper + se[1].Dest); //If the calculation results in an error, resume normal IR generation and let it be handled at runtime

          if (Number.isFinite(cnst)) {
            this.Dest = "" + cnst;
            this.Type = 'float';
            this.Const = true;
            return;
          }
        }
      }

      oprd_types = [];
      dest = [];

      for (i = 0; i < len; i++) {
        oprd_types.push(se[i].Type);
        dest.push(se[i].Dest);
      }

      def = new RegExp(oprd_types.join(",") + "\:(.*)");

      for (j in table) {
        if (match = j.match(def)) {
          break;
        }
      }

      if (!match) {
        this.ir_error(util.format("Could not apply operation %s to %s", this.oper, oprd_types.join(", ")));
      }

      this.Type = match[1];
      this.Dest = irs.getTemp(types[this.Type].slots);
      dest.splice(0, 0, this.Dest);

      if (len <= 4) {//this.Dest += util.format(".%s", swizzles[0].substring(0, glsl.type.size[this.Type]));
      }

      if (len == 1) {
        comment = util.format("(%s %s %s) => %s %s", this.oper, se[0].Type, se[0].Dest, this.Type, this.Dest);
      } else if (len == 2) {
        comment = util.format("(%s %s %s %s %s) => %s %s", se[0].Type, se[0].Dest, this.oper, se[1].Type, se[1].Dest, this.Type, this.Dest);
      } else if (len == 3) {
        comment = util.format("(%s %s ? %s %s : %s %s) => %s %s", se[0].Type, se[0].Dest, se[1].Type, se[1].Dest, se[2].Type, se[2].Dest, this.Type, this.Dest);
      }

      irs.push(new IrComment(comment, this.location));
      irs.build(table[j], dest);
    };
    /**
     * Constructs an pre/post increment/decrement expression
     *
     * @param   object   state   GLSL state
     * @param   object   irs     IR representation
     */


    AstExpression.prototype.ir_incdec = function (state, irs) {
      var se, op, ins, post, type, i, ir;
      se = this.subexpressions[0];
      op = this.oper.replace('x', '');
      ins = op === '++' ? 'ADD' : 'SUB';
      post = this.oper.indexOf('x') === 0;
      type = types[se.Type]; //Type check: base type must be int or float

      if (type.base != 'int' && type.base != 'float') {
        this.ir_error(util.format("Could not apply operation %s to %s", op, se.Type));
      }

      this.Type = se.Type;

      if (post) {
        //For post increment, the returned happens before the increment, so we need a temp to store it
        this.Dest = irs.getTemp(type.slots);
      } else {
        this.Dest = se.Dest;
      }

      irs.push(new IrComment(util.format("(%s%s) => %s %s", post ? se.Dest : op, post ? op : se.Dest, this.Type, this.Dest), this.location));

      for (i = 0; i < type.slots; i++) {
        if (post) {
          this.Dest = irs.getTemp(type.slots);
          ir = new IrInstruction('MOV', this.Dest, se.Dest);
          ir.addOffset(i);
          ir.setSwizzle(type.swizzle);
          irs.push(ir);
        }

        ir = new IrInstruction(ins, se.Dest, se.Dest, "1.0");
        ir.addOffset(i);
        ir.setSwizzle(type.swizzle);
        irs.push(ir);
      }
    };
    /**
     * Constructs an array index expression
     *
     * @param   object   state   GLSL state
     * @param   object   irs     IR representation
     */


    AstExpression.prototype.ir_arr_index = function (state, irs) {
      var arr, idx, entry, size, cnst, oprd;
      arr = this.subexpressions[0];
      idx = this.subexpressions[1];
      entry = arr.Entry; //Ensure array index is integer

      if (idx.Type != 'int') {
        this.ir_error("array index out of bounds");
      } //@todo: Need to implement array indexing syntax for vector components


      if (!entry.size) {
        this.ir_error("cannot index a non-array value");
      } //@todo: Need to implement array indexing for matrices


      if (types[entry.base_type].slots > 1) {
        this.ir_error("array indexing for matrices not implemented yet");
      }

      this.Type = entry.base_type; //If constant index, we can do some additional error checking

      if (idx.Const) {
        cnst = parseInt(idx.Dest);

        if (cnst < 0 || cnst >= entry.size) {
          this.ir_error("array index out of bounds");
        }

        oprd = new IrOperand(arr.Dest);
        oprd.index = cnst;
        this.Dest = oprd.toString();
      } else {
        //@todo: variable indexing is permitted by spec, but behavior is undefined for out of bounds
        this.ir_error("variable indexing not implemented yet");
      }
    };
    /**
     * Constructs a function expression
     *
     * @param   object   state   GLSL state
     * @param   object   irs     IR representation
     */


    AstFunctionExpression.prototype.ir = function (state, irs) {
      var i, e, name, entry, ret_entry, retd_entry, call_types, operands, param, proto, loc;

      if (this.cons) {
        return this.ir_constructor(state, irs);
      }

      name = this.subexpressions[0].primary_expression.identifier;
      operands = [];
      call_types = [];

      for (i = 0; i < this.expressions.length; i++) {
        e = this.expressions[i];
        e.ir(state, irs);
        call_types.push(e.Type);
        operands.push(e.Dest);
      }

      entry = state.symbols.get_function(name, call_types);

      if (!entry) {
        this.ir_error(util.format("Function %s(%s) is not defined", name, call_types.join(", ")));
      }

      this.Type = entry.type;
      this.Dest = irs.getTemp(entry.getType().slots);
      irs.push(new IrComment(util.format("%s(%s) => %s %s", name, operands.join(", "), this.Type, this.Dest), this.location));

      if (entry.code) {
        //Use function template
        operands.unshift(this.Dest);
        irs.build(entry.code, operands);
      } else if (entry.Ast) {
        //Rebuild inline function from AST
        state.symbols.push_scope(); //Enter vars into local symbol table

        proto = entry.Ast.proto_type;

        for (i = 0; i < proto.parameters.length; i++) {
          param = proto.parameters[i];
          loc = state.symbols.add_variable(param.identifier, param.type.specifier.type_name);
          loc.out = irs.getTemp(loc.getType().slots); //Add MOV operation from called param to local param

          irs.push(new IrComment(util.format("PARAM %s => %s %s", operands[i], loc.out, param.type.specifier.type_name), param.location)); //Piggy-back off assignment generation

          lhs = new AstExpression('<param>');
          lhs.setLocation(this.getLocation());
          lhs.Type = loc.type;
          lhs.Dest = loc.out;
          assign = new AstExpression('=', lhs, this.expressions[i]);
          assign.setLocation(this.getLocation());
          assign.ir_assign(state, irs, true);
        } //Create a return entry for the new call scope


        ret_entry = state.symbols.add_variable("<return>", this.Type);
        ret_entry.out = this.Dest;
        retd_entry = state.symbols.add_variable("<returned>", "bool");
        retd_entry.out = irs.getTemp(retd_entry.getType().slots);
        entry.Ast.body.ir(state, irs);
        state.symbols.pop_scope();
      }
    };
    /**
     * Constructs a type constructor
     *
     * @param   object   state   GLSL state
     * @param   object   irs     IR representation
     */


    AstFunctionExpression.prototype.ir_constructor = function (state, irs) {
      var type, comment_text, comment, i, expr, src_expr, src_i, src_c, oprd, dest;
      type = this.subexpressions[0].type_specifier;
      this.Type = type.name;
      this.Dest = irs.getTemp(type.slots);
      comment_text = [];
      comment = new IrComment("", this.location);
      irs.push(comment); //Prepare components

      for (i = 0; i < this.expressions.length; i++) {
        expr = this.expressions[i];

        if (expr) {
          expr.ir(state, irs);
          comment_text.push(expr.Dest);
        }
      }

      src_expr = this.expressions[0];
      src_i = 0; //Source expression index

      src_c = 0; //Component of source expression

      for (dest_i = 0; dest_i < type.size; dest_i++) {
        if (!src_expr) {
          this.ir_error("Not enough parameters to constructor");
        } //@todo: need to add support for > vec4


        if (types[src_expr.Type].size > 4) {
          this.ir_error("Matrix components not implemented yet");
        } //compute destination


        dest = util.format("%s.%s", this.Dest, Ir.swizzles[0][dest_i]); //compute source

        oprd = new IrOperand(src_expr.Dest);

        if (!oprd.swizzle) {
          oprd.swizzle = Ir.swizzles[0][src_c];
        }

        irs.push(new IrInstruction('MOV', dest, oprd.toString()));
        src_c++; //Get next source component expression

        if (src_c >= types[src_expr.Type].size) {
          if (this.expressions[src_i + 1]) {
            src_i++;
            src_expr = this.expressions[src_i];
            src_c = 0;
          }
        }
      }

      comment.comment = util.format("%s(%s) => %s %s", this.Type, comment_text.join(", "), this.Type, this.Dest);
    };
    /**
     * Constructs a field selection code block
     *
     * @param   object   state   GLSL state
     * @param   object   irs     IR representation
     */


    AstExpression.prototype.ir_field = function (state, irs) {
      var field, swz, base, se; //pick swizzle set

      field = this.primary_expression.identifier;
      se = this.subexpressions[0];
      se.ir(state, irs);

      if (Ir.isSwizzle(field)) {
        base = types[se.Type].base;

        if (field.length > 1) {
          if (base == 'int') {
            base = 'ivec' + field.length;
          }

          if (base == 'bool') {
            base = 'bvec' + field.length;
          }

          if (base == 'float') {
            base = 'vec' + field.length;
          }
        }

        this.Type = base;

        if (field.length > 4 || !this.Type) {
          this.ir_error(util.format("Invalid field selection %s.%s", se, field));
        }

        this.Dest = util.format("%s.%s", se.Dest, Ir.normalizeSwizzle(field));
      }
    };
    /**
     * Constructs a selection statement
     *
     * @param   ast_node    Statement
     */


    AstSelectionStatement.prototype.ir = function (state, irs) {
      var ir, cond;
      this.condition.ir(state, irs); //@todo: add a check that condition is bool type?

      irs.push(new IrComment(util.format("if %s then", this.condition.Dest), this.location)); //set a flag based on the result

      ir = new IrInstruction('IF', this.condition.Dest);

      if (['bool', 'int', 'float'].indexOf(this.condition.Type) === -1) {
        this.ir_error("boolean expression expected");
      }

      if (!ir.d.swizzle) {
        ir.d.swizzle = 'x';
      }

      irs.push(ir);
      this.then_statement.ir(state, irs);

      if (this.else_statement) {
        irs.push(new IrInstruction('ELSE'));
        this.else_statement.ir(state, irs);
      }

      irs.push(new IrInstruction('ENDIF'));
    };
    /**
     * Constructs a jump statement
     *
     * Note: jump semantics are a bit different in glsl as there is no true "jumping":
     * functions are inlined, loops are unrolled, etc.
     *
     * @param   ast_node    Statement
     */


    AstJumpStatement.prototype.ir = function (state, irs) {
      var ret, ret_entry, assign, lhs;

      switch (this.mode) {
        case 'return':
          ret = this.opt_return_value;

          if (ret) {
            ret.ir(state, irs);
            ret_entry = state.symbols.get_variable('<return>'); //@todo: need to compare return value type with current function type

            irs.push(new IrComment(util.format("return => %s %s", ret.Dest, ret.Type), this.location)); //Piggy-back off assignment generation

            lhs = new AstExpression('<return>');
            lhs.setLocation(this.getLocation());
            lhs.Type = ret.Type;
            lhs.Dest = ret_entry.out;
            assign = new AstExpression('=', lhs, ret);
            assign.setLocation(this.getLocation());
            assign.ir_assign(state, irs, true);
          } else {
            irs.push(new IrComment("return", this.location));
          }

          break;

        case 'debugger':
          irs.push(new IrComment("debugger", this.location));
          irs.push(new IrInstruction("DBGR"));
          break;

        default: //@todo:

      }
    };
    /*
    Copyright (c) 2011 Cimaron Shanahan
    
    Permission is hereby granted, free of charge, to any person obtaining a copy of
    this software and associated documentation files (the "Software"), to deal in
    the Software without restriction, including without limitation the rights to
    use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
    the Software, and to permit persons to whom the Software is furnished to do so,
    subject to the following conditions:
    
    The above copyright notice and this permission notice shall be included in all
    copies or substantial portions of the Software.
    
    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
    FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
    COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
    IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
    CONNECTION WITH THE SOFTWARE OR THE USE		 OR OTHER DEALINGS IN THE SOFTWARE.
    */

    /**
     * IR Class
     *
     * Stores IR code tree
     */


    function Ir(target) {
      this.target = target;
      this.symbols = {
        uniform: {
          next: 0,
          entries: {}
        },
        attribute: {
          next: 0,
          entries: {}
        },
        varying: {
          next: 0,
          entries: {}
        },
        temp: {
          next: 0
        }
      };
      this.code = [];
      this.last = null;
    }

    Ir.prototype.getTemp = function (n) {
      var t;
      n = n || 1;
      t = 'temp@' + this.symbols.temp.next;
      this.symbols.temp.next += n;
      return t;
    };
    /**
     * Add a symbol table entry into the local symbol table and return a new IR identifier
     *
     * @param   object   entry   Symbol table entry
     *
     * @return  string
     */


    Ir.prototype.getUniform = function (entry) {
      var table = this.symbols.uniform,
          out;

      if (!table.entries[entry.name]) {
        table.entries[entry.name] = entry;
        entry.out = 'uniform@' + table.next;
        table.next += entry.getType().slots;
      }

      return entry.out;
    };
    /**
     * Add a symbol table entry into the local symbol table and return a new IR identifier
     *
     * @param   object   entry   Symbol table entry
     *
     * @return  string
     */


    Ir.prototype.getAttribute = function (entry) {
      var table = this.symbols.attribute,
          out;

      if (!table.entries[entry.name]) {
        table.entries[entry.name] = entry;
        entry.out = 'attribute@' + table.next;
        table.next += entry.getType().slots;
      }

      return entry.out;
    };
    /**
     * Add a symbol table entry into the local symbol table and return a new IR identifier
     *
     * @param   object   entry   Symbol table entry
     *
     * @return  string
     */


    Ir.prototype.getVarying = function (entry) {
      var table = this.symbols.varying,
          out;

      if (!table.entries[entry.name]) {
        table.entries[entry.name] = entry;
        entry.out = 'varying@' + table.next;
        table.next += entry.getType().slots;
      }

      return entry.out;
    };

    Ir.prototype.get = function (i) {
      return this.code[i];
    };

    Ir.prototype.push = function (ir) {
      this.code.push(ir);
      this.last = ir;
    };

    Ir.isSwizzle = function (swz) {
      if (swz.match(/[xyzw]+/)) {
        return true;
      }

      if (swz.match(/[rgba]+/)) {
        return true;
      }

      if (swz.match(/[stpq]+/)) {
        return true;
      }
    };

    Ir.normalizeSwizzle = function (swz) {
      var n;

      if (!this.isSwizzle(swz)) {
        return null;
      }

      n = swz.replace(/[rs]/g, 'x').replace(/[gt]/g, 'y').replace(/[bp]/g, 'z').replace(/[aq]/g, 'w');
      return n;
    };

    Ir.swizzles = ["xyzw", "rgba", "stpq"];
    /**
     * Replaces all instances of an operand name and base index in all instructions after start
     *
     * @param   integer     Starting instruction number
     * @param   string      Old name to search for
     * @param   string      New name to replace with
     * @param   integer     Add offset
     * @param   boolean     True if replacing with a completely new operand
     */

    Ir.prototype.replaceName = function (start, old, nw, index, repl) {
      var i, j, ir, f, name, neg_const;
      neg_const = old.match(/^\-([0-9]+\.[0-9]+)/);

      if (neg_const) {
        old = neg_const[1];
        neg_const = true;
      }

      for (i = start; i < this.code.length; i++) {
        ir = this.code[i]; //foreach each operand field

        for (j = 0; j < IR.operands.length; j++) {
          f = IR.operands[j];

          if (ir[f] && ir[f].name == old) {
            if (repl) {
              ir[f] = new Ir.Operand(ir[f].neg + nw);
            } else {
              ir[f].name = nw;
              ir[f].addOffset(index);
            }

            if (neg_const && ir[f].neg) {
              ir[f].neg = "";
            }
          }
        }
      }
    };

    Ir.prototype.toString = function () {
      return this.code.join("\n");
    };
    /**
     * Builds instructions from code table record
     *
     * @param   array       List of instruction strings
     * @param   array       List of operands
     */


    Ir.prototype.build = function (code, oprds) {
      var dest, i, j, k, o, n, t, oprd, ir, new_swz, temps; //Parse operands

      for (i = 0; i < oprds.length; i++) {
        oprd = new IrOperand(oprds[i]);

        if (oprd.swizzle) {
          //need a new temp to move the swizzle so our code pattern works
          new_swz = Ir.swizzles[0].substring(0, oprd.swizzle.length);

          if (oprd.swizzle != new_swz) {
            dest = this.getTemp();
            ir = new IrInstruction('MOV', util.format("%s.%s", dest, new_swz), oprd.full);
            this.push(ir);
            oprd = new IrOperand(dest);
          }
        }

        oprds[i] = oprd;
      }

      temps = []; //Merge template with passed operands

      for (i = 0; i < code.length; i++) {
        ir = new IrInstruction(code[i]); //For each operand

        for (j = 0; j < IrInstruction.operands.length; j++) {
          o = IrInstruction.operands[j];
          oprd = ir[o];

          if (!oprd) {
            break;
          } //Normal src/dest


          n = oprd.name.match(/%(\d+)/);

          if (n) {
            n = parseInt(n[1]);
            ir[o] = new IrOperand(oprds[n - 1].toString());
            ir[o].addOffset(oprd.address);
            ir[o].swizzle = oprd.swizzle;
            ir[o].neg = oprd.neg;
          } //Need temp


          t = oprd.name.match(/%t(\d+)/);

          if (t) {
            //Build up enough temps
            t = parseInt(t[1]);

            while (temps.length < t) {
              temps.push(this.getTemp());
            }

            t = temps[t - 1].split('@');
            oprd.name = t[0];
            oprd.address = t[1];
            oprd.full = oprd.toString();
          }
        }

        this.push(ir);
      }
    };
    /**
     * Ir Error Class
     *
     * Used to differentiate between a compilation error and a compiler error
     */


    function IrError(msg) {
      this.msg = msg;
      this.ir = true;
    }

    IrError.prototype = Error.prototype;
    /*
    Copyright (c) 2011 Cimaron Shanahan
    
    Permission is hereby granted, free of charge, to any person obtaining a copy of
    this software and associated documentation files (the "Software"), to deal in
    the Software without restriction, including without limitation the rights to
    use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
    the Software, and to permit persons to whom the Software is furnished to do so,
    subject to the following conditions:
    
    The above copyright notice and this permission notice shall be included in all
    copies or substantial portions of the Software.
    
    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
    FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
    COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
    IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
    CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
    */

    /**
     * IR Instruction Class
     *
     * Represents a single assembly-like instruction
     */

    function IrInstruction(op, d, s1, s2, s3) {
      var args;
      this.str = null;
      this.line = null;

      if (arguments.length == 1) {
        args = op.split(/[\s,]/);
        op = args[0];
        d = args[1];
        s1 = args[2];
        s2 = args[3];
        s3 = args[4];
      }

      this.op = op;
      this.d = this.operand(d);
      this.s1 = this.operand(s1);
      this.s2 = this.operand(s2);
      this.s3 = this.operand(s3);
    }

    IrInstruction.operands = ['d', 's1', 's2', 's3'];

    IrInstruction.prototype.operand = function (opr) {
      return opr ? new IrOperand(opr) : "";
    };
    /**
     * Adds the offset to all operands
     *
     * @param   integer    The offset to set
     */


    IrInstruction.prototype.addOffset = function (offset) {
      var i, o;

      for (i = 0; i < IrInstruction.operands.length; i++) {
        o = IrInstruction.operands[i];

        if (this[o]) {
          this[o].addOffset(offset);
        }
      }
    };
    /**
     * Set the swizzle components on all operands
     *
     * @param   string    The swizzle to set
     */


    IrInstruction.prototype.setSwizzle = function (swz) {
      var i, o;

      for (i = 0; i < IrInstruction.operands.length; i++) {
        o = IrInstruction.operands[i];

        if (this[o] && !this[o].swizzle) {
          this[o].swizzle = swz;
        }
      }
    };
    /**
     * toString method
     *
     * @return  string
     */


    IrInstruction.prototype.toString = function () {
      var out;
      out = util.format("%s%s%s%s%s;", this.op, this.d ? ' ' + this.d : '', this.s1 ? ', ' + this.s1 : '', this.s2 ? ', ' + this.s2 : '', this.s3 ? ', ' + this.s3 : '');
      return out;
    };
    /**
     * IR Comment Class
     *
     * Represents a single comment
     */


    function IrComment(comment, loc) {
      this.comment = comment;
      this.loc = loc;
    }

    IrComment.prototype.toString = function () {
      var c = this.comment;

      if (this.loc) {
        c = util.format("%s [%s:%s-%s:%s]", c, this.loc.first_line, this.loc.first_column, this.loc.last_line, this.loc.last_column);
      }

      c = "\n# " + c;
      return c;
    };
    /**
     * IR Operand Class
     *
     * Represents a single operand
     */


    function IrOperand(str, raw) {
      this.full = "";
      this.neg = "";
      this.name = "";
      this.address = "";
      this.swizzle = "";
      this.number = "";
      this.raw = "";
      this.index = "";

      if (raw) {
        this.full = str;
        this.raw = str;
      } else {
        this.parse(str);
      }
    }
    /**
     * Parses operand string
     *
     * @param   string    string that represents a single variable
     */


    IrOperand.prototype.parse = function (str) {
      var parts, regex;

      if (!str) {
        return;
      }

      if (!isNaN(parseFloat(str))) {
        this.raw = str;
        return;
      } //neg


      regex = "(\-)?"; //name (include '%' for our code substitution rules)

      regex += "([\\w%]+)"; //number

      regex += "(?:@(\\d+))?"; //index

      regex += "(?:\\[(\\d+)\\])?"; //swizzle

      regex += "(?:\\.([xyzw]+))?";
      regex = new RegExp("^" + regex + "$");

      if (parts = str.match(regex)) {
        this.neg = parts[1] || "";
        this.name = parts[2];
        this.address = parseInt(parts[3]) || 0;
        this.index = parseInt(parts[4]) || 0;
        this.swizzle = parts[5] || "";
      } else {
        if (parts = str.match(/^"(.*)"$/)) {
          this.raw = parts[1];
        } else {
          this.raw = str;
        }
      }

      this.full = this.toString();
    };
    /**
     * Adds an offset
     *
     * @param   integer    Offset to add
     */


    IrOperand.prototype.addOffset = function (offset) {
      this.address = this.address || 0;
      this.address += offset;
    };
    /**
     * toString method
     *
     * @return  string
     */


    IrOperand.prototype.toString = function () {
      var str;

      if (this.raw) {
        str = this.raw;
      } else {
        str = this.neg + this.name + ("@" + this.address) + (this.index !== "" ? "[" + this.index + "]" : "") + (this.swizzle ? "." + this.swizzle : "");
      }

      return str;
    };
    /*
    Copyright (c) 2014 Cimaron Shanahan
    
    Permission is hereby granted, free of charge, to any person obtaining a copy of
    this software and associated documentation files (the "Software"), to deal in
    the Software without restriction, including without limitation the rights to
    use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
    the Software, and to permit persons to whom the Software is furnished to do so,
    subject to the following conditions:
    
    The above copyright notice and this permission notice shall be included in all
    copies or substantial portions of the Software.
    
    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
    FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
    COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
    IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
    CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
    */

    /**
     * GlslProgramJavascript class
     */


    function GlslProgramJavascript() {
      this.vertex_code = [];
      this.fragment_code = [];
      this.symbols = new GlslProgramJavascriptVars();
      this.context = new GlslProgramJavascriptContext();
      this.library = {
        tex: function tex(dest, i, sampler, src, j, dim) {
          dest[i] = 0;
          dest[i + 1] = 0;
          dest[i + 2] = 0;
          dest[i + 3] = 1;
        }
      };
      this.vertex = null;
      this.shader = null;
    }

    var proto = GlslProgramJavascript.prototype;
    GlslProgramJavascript.translation_table = {
      'ABS': '%1.* = Math.abs(%2.*);',
      'ADD': '%1.* = %2.* + %3.*;',
      'AND': '%1.* = %2.* & %3.*;',
      //'ARL' : false,
      'CEIL': '%1.* = Math.ceil(%2.*);',
      'CMP': '%1.* = (%2.* < 0.0) ? %3.* : %4.*;',
      'COS': '%1.* = Math.cos(%2.*);',
      'DIV': '%1.* = %2.* / %3.*;',
      'DBGR': 'debugger;',
      'DP2': '%1.x = (%2.x * %3.x) + (%2.y * %3.y);',
      'DP3': '%1.x = (%2.x * %3.x) + (%2.y * %3.y) + (%2.z * %3.z);',
      'DP4': '%1.x = (%2.x * %3.x) + (%2.y * %3.y) + (%2.z * %3.z) + (%2.w * %3.w);',
      //'DPH' : '%1.* = (%2.x * %3.x + %2.y * %3.y + %2.z + %3.z + %3.w);',
      //'DST' : '%1.* = [1, %2.y * %3.y, %2.z, %3.w];',
      'ELSE': '} else {',
      'ENDIF': '}',
      'FLR': '%1.* = Math.floor(%2.*);',
      'FRC': '%1.* = %2.* - Math.floor(%2.*);',
      'IF': 'if (%1.x) {',
      'MAD': '%1.* = (%2.* * %3.*) + %4.*;',
      'MAX': '%1.* = Math.max(%2.*, %3.*);',
      'MIN': '%1.* = Math.min(%2.*, %3.*);',
      'MOD': '%1.* = %2.* % %3.*;',
      'MOV': '%1.* = %2.*;',
      'MUL': '%1.* = %2.* * %3.*;',
      'OR': '%1.* = %2.* | %3.*;',
      'POW': '%1.x = Math.pow(%2.x, %3.x);',
      'RET': 'return;',
      'RSQ': '%1.* = (1.0 / Math.sqrt(%2.*));',
      'SEQ': '%1.* = (%2.* === %3.*) ? 1.0 : 0.0;',
      'SGE': '%1.* = (%2.* >=  %3.*) ? 1.0 : 0.0;',
      'SGT': '%1.* = (%2.* >   %3.*) ? 1.0 : 0.0;',
      'SIN': '%1.* = Math.sin(%2.*);',
      'SLE': '%1.* = (%2.* <=  %3.*) ? 1.0 : 0.0;',
      'SLT': '%1.* = (%2.* <   %3.*) ? 1.0 : 0.0;',
      'SNE': '%1.* = (%2.* !== %3.*) ? 1.0 : 0.0;',
      'SUB': '%1.* = %2.* - %3.*;',
      'TAN': '%1.* = Math.tan(%2.*);',
      //Non-standard opcode for NV_gpu
      'TEX': 'tex(%1, %4, %2, %5, %3.x, 0);',
      //%4 = address of %1, %5 = address of %2
      'XOR': '%1.* = %2.* ^ %3.*;'
    };
    /**
     * Return string representation of program
     *
     * @param   int   target   target
     *
     * @return  string
     */

    proto.toString = function (target) {
      if (target === glsl.target.fragment) {
        return this.fragment_code.join("\n");
      } else if (target === glsl.target.vertex) {
        return this.vertex_code.join("\n");
      } else {
        return this.current.join("\n");
      }
    };
    /**
     * Translates IR code into a javascript representation
     *
     * @return  bool      true if there were no errors
     */


    proto.addObjectCode = function (object, target) {
      var i, errors; //optimize(irs, symbols);

      this.mergeSymbols(object);
      this.current = [];

      for (i = 0; i < object.code.length; i++) {
        try {
          this.instruction(object.code[i]);
        } catch (e) {
          this.error = util.format("%s at %s:%s", e.message, e.lineNumber, e.columnNumber);
          return false;
        }
      }

      if (target == glsl.target.vertex) {
        this.vertex_code = this.current;
      } else if (target == glsl.target.fragment) {
        this.fragment_code = this.current;
      }

      return true;
    };
    /**
     * Merge symbol code into program table
     */


    proto.mergeSymbols = function (object) {
      var s, t, n, entry, sym, start, slots, comp;

      for (s in object.symbols) {
        t = object.symbols[s].entries;

        for (n in t) {
          entry = t[n];
          start = parseInt(entry.out.split('@')[1]);
          slots = entry.getType().slots;
          comp = entry.getType().size / slots;

          if (s == 'uniform') {
            sym = this.symbols.addUniform(entry.name, start, slots, comp);

            if (this.findSymbolCollision(this.symbols.uniform, sym)) {
              this.rewriteSymbol(this.symbols.uniform, sym, object);
            }
          } else if (s == 'attribute') {
            this.symbols.addAttribute(entry.name, start, slots, comp);
          } else if (s == 'varying') {
            this.symbols.addVarying(entry.name, start, slots, comp);
          }
        }
      }
    };
    /**
     * Scan symbol table to find collisions
     */


    proto.findSymbolCollision = function (table, symbol) {
      var i, my_start, my_end, start, end;
      my_start = symbol.pos;
      my_end = my_start + symbol.slots - 1;

      for (i in table) {
        if (i == symbol.name) {
          continue;
        }

        start = table[i].pos;
        end = start + table[i].slots - 1;

        if (my_start >= start && my_start <= end || my_end >= start && my_end <= end) {
          return true;
        }
      }

      return false;
    };
    /**
     * Rewrite symbol table entry position in code
     */


    proto.findNewSymbolPosition = function (table, symbol) {
      var i, size, addresses, last, next;
      addresses = []; //find new address

      for (i in table) {
        if (symbol.name == i) {
          continue;
        } //start address


        addresses.push(table[i].pos); //end address

        addresses.push(table[i].pos + table[i].slots - 1);
      }

      addresses.sort(); //Can insert at beginning

      if (addresses[0] >= symbol.slots) {
        return 0;
      } //Can insert in between


      for (i = 1; i < addresses.length; i += 2) {
        last = addresses[i];
        next = addresses[i];

        if (next - last - 1 > symbol.slots) {
          return last + 1;
        }
      } //Can insert at end


      return addresses.slice(-1)[0] + 1;
    };
    /**
     * Rewrite symbol table entry position in code
     */


    proto.rewriteSymbol = function (table, symbol, object) {
      var pos, old_start, old_end, diff, i, ins;
      old_start = symbol.pos;
      old_end = old_start + symbol.slots - 1;
      symbol.pos = this.findNewSymbolPosition(table, symbol);
      diff = symbol.pos - old_start;

      for (i = 0; i < object.code.length; i++) {
        ins = object.code[i];

        if (!(ins instanceof IrInstruction)) {
          continue;
        }

        this.rewriteOperandAddress(ins.d, old_start, old_end, diff, symbol);
        this.rewriteOperandAddress(ins.s1, old_start, old_end, diff, symbol);
        this.rewriteOperandAddress(ins.s2, old_start, old_end, diff, symbol);
        this.rewriteOperandAddress(ins.s3, old_start, old_end, diff, symbol);
      }
    };
    /**
     * Rewrite symbol table entry position in code
     */


    proto.rewriteOperandAddress = function (oprd, old_start, old_end, diff, symbol) {
      var diff;

      if (!oprd) {
        return;
      }

      if (oprd.name != symbol.type) {
        return;
      }

      if (oprd.address >= old_start && oprd.address <= old_end) {
        oprd.address += diff;
      }
    };
    /**
     * Build a program
     *
     * @return  function
     */


    proto.build = function () {
      var module, shaders;
      module = new Function("stdlib", "foreign", "heap", "//\"use asm\";\n" + "var\n" + "uniform_f32   = new stdlib.Float32Array(heap,   0, 128),\n" + "attribute_f32 = new stdlib.Float32Array(heap, 512, 128),\n" + "varying_f32   = new stdlib.Float32Array(heap, 1024, 128),\n" + "result_f32    = new stdlib.Float32Array(heap, 1536, 128),\n" + "temp_f32      = new stdlib.Float32Array(heap, 2048, 128),\n" + "jstemp        = new stdlib.Float32Array(heap, 2544,   4),\n" + "tex           = foreign.tex;\n" + ";\n" + "function vs() {\n" + this.vertex_code.join("\n") + "\n" + "}\n" + "function fs() {\n" + this.fragment_code.join("\n") + "\n" + "}\n" + "return { fragment : fs, vertex : vs };");
      shaders = module(window, this.library, this.context.heap);
      this.vertex = shaders.vertex;
      this.fragment = shaders.fragment;
    };
    /**
     * Translates ASM instruction into output format
     *
     * @param   string    string that represents a single instruction
     */


    proto.instruction = function (ins) {
      var tpl, dest, src, i, j, k, code, js;

      if (ins instanceof IrComment) {
        this.current.push('// ' + ins.toString().replace("\n", ""));
        return;
      }

      this.current.push('// ' + ins.toString());

      if (!(tpl = GlslProgramJavascript.translation_table[ins.op])) {
        throw new Error(util.format("Could not translate opcode '%s'", ins.op));
      } //variables


      dest = this.buildComponents(ins.d, true);

      if (!dest) {
        this.current.push(tpl);
        return;
      }

      src = [];
      src.push(this.buildComponents(ins.s1));
      src.push(this.buildComponents(ins.s2));
      src.push(this.buildComponents(ins.s3));

      if (ins.op == 'TEX') {
        js = tpl.replace(/%1/g, dest.name);
        js = js.replace(/%2/g, src[0].name);
        js = this.replaceOperand(js, '%3', src[1], 0);
        js = js.replace(/%4/g, dest.start);
        js = js.replace(/%5/g, src[0].start);
        this.current.push(js);
        this.current.push("");
        return;
      }

      this.generateTemp(dest, src, tpl);

      for (i = 0; i < dest.components.length; i++) {
        js = this.replaceOperand(tpl, '%1', dest, i);

        for (j = 0; j < 3; j++) {
          if (src[j]) {
            js = this.replaceOperand(js, '%' + (j + 2), src[j], i);
          }
        }

        this.current.push(js);
      }

      this.current.push("");
    };
    /**
     * Replace an operand into code template
     *
     * @param   string   tpl    Template
     * @param   string   from   Template operand
     * @param   object   op     Operand info
     * @param   int      n      Current component iteration  
     */


    proto.replaceOperand = function (tpl, from, op, n) {
      var i,
          out,
          name,
          addr,
          swz = ['x', 'y', 'z', 'w'];

      if (op.raw) {
        name = op.name;
      } else {
        if (op.jstemp && op.jstemp[n]) {
          name = 'jstemp';
          addr = n;
        } else {
          name = op.name;

          if (op.components) {
            addr = op.start + op.components[n];
          }
        }
      }

      if (op.components) {
        out = tpl.replace(from + '.*', util.format("%s[%s]", name, addr));
      } else {
        out = tpl.replace(from + '.*', name);
      }

      for (i = 0; i < swz.length; i++) {
        out = out.replace(new RegExp(from + '\.' + swz[i], 'g'), util.format("%s[%s]", name, op.start + i));
      }

      return out;
    };
    /**
     * Prepares info on IR operand
     *
     * @param   IrOperand   opr    Operand
     * @param   bool        dest   Is destination?
     *
     * @return  object
     */


    proto.buildComponents = function (opr, dest) {
      var i, swz, out;

      if (!opr) {
        return null;
      }

      out = {};

      if (opr.raw) {
        out.name = opr.raw;
        out.raw = true;
        return out;
      }

      out.name = opr.neg + opr.name + '_f32';
      out.start = 4 * opr.address + 4 * opr.index;
      out.components = [];
      out.jstemp = []; //generate array representation of swizzle components, expanding if necessary

      swz = opr.swizzle || "xyzw";
      swz = swz.split("");

      for (i = 0; i < 4; i++) {
        //exact swizzle specified and less than 4 components, grab last one
        if (swz.length <= i) {
          if (!dest) {
            //repeat last one
            out.components.push(out.components[i - 1]);
            out.jstemp.push(null);
          }
        } else {
          out.components.push("xyzw".indexOf(swz[i]));
          out.jstemp.push(null);
        }
      }

      return out;
    };

    proto.generateTemp = function (dest, src, tpl) {
      var i, c, op, written;

      for (i = 0; i < dest.components.length; i++) {
        written = dest.components.slice(0, i);

        for (c = 0; c < src.length; c++) {
          op = src[c];

          if (op && op.name == dest.name && op.start == dest.start && written.indexOf(op.components[i]) != -1) {
            op.jstemp[i] = true;
            this.current.push(util.format("jstemp[%s] = %s[%s]", i, op.name, op.start + op.components[i]));
          }
        }
      } //console.log(tpl, dest, src);
      //debugger;

    };
    /**
     * Get Uniform Location
     *
     * @param   string   name   Name
     *
     * @return  int
     */


    proto.getUniformLocation = function (name) {
      if (this.symbols.uniform[name]) {
        return this.symbols.uniform[name].start;
      }

      return false;
    };
    /**
     * Get Uniform Size
     *
     * @param   string   name   Name
     *
     * @return  int
     */


    proto.getUniformSize = function (name) {
      if (this.symbols.uniform[name]) {
        return this.symbols.uniform[name].size;
      }

      return false;
    };
    /**
     * Set Uniform data
     * 
     * @param   string   name   Name
     * @param   array    data   Data
     */


    proto.setUniformData = function (name, data) {
      var i, l, s, d;
      d = data.length;
      l = this.getUniformSize(name);
      s = this.getUniformLocation(name);

      if (l === false) {
        return;
      }

      this.context.uniform_f32.set(data, i + s);
    };
    /**
     * Get Attribute Location
     *
     * @param   string   name   Name
     *
     * @return  int
     */


    proto.getAttributeLocation = function (name) {
      if (this.symbols.attribute[name]) {
        return this.symbols.attribute[name].start;
      }

      return false;
    };
    /**
     * Get Attribute Size
     *
     * @param   string   name   Name
     *
     * @return  int
     */


    proto.getAttributeSize = function (name) {
      if (this.symbols.attribute[name]) {
        return this.symbols.attribute[name].size;
      }

      return false;
    };
    /**
     * Set Attribute data
     * 
     * @param   string   name   Name
     * @param   array    data   Data
     */


    proto.setAttributeData = function (name, data) {
      var i, l, s, d;
      d = data.length;
      l = this.getAttributeSize(name);
      s = this.getAttributeLocation(name);

      if (l === false) {
        return;
      }

      this.context.attribute_f32.set(data, i + s);
    };
    /**
     * Get result data
     *
     * @param   int   start   Start pos
     * @param   int   size    Size
     *
     * @return  array
     */


    proto.getResultData = function (start, size) {
      var res;
      res = Array.prototype.slice.apply(this.context.result_f32, [start, size]);
      return res;
    };
    /**
     * Set TEX lookup function
     *
     * 
     */


    proto.setTexFunction = function (func) {
      this.library.tex = func;
    };

    glsl.program = GlslProgramJavascript;
    /*
    Copyright (c) 2011 Cimaron Shanahan
    
    Permission is hereby granted, free of charge, to any person obtaining a copy of
    this software and associated documentation files (the "Software"), to deal in
    the Software without restriction, including without limitation the rights to
    use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
    the Software, and to permit persons to whom the Software is furnished to do so,
    subject to the following conditions:
    
    The above copyright notice and this permission notice shall be included in all
    copies or substantial portions of the Software.
    
    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
    FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
    COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
    IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
    CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
    */

    /**
     * GlslProgramJavascriptContext class
     */

    function GlslProgramJavascriptContext() {
      this.heap = new ArrayBuffer(640 * 4);
      this.uniform_f32 = new Float32Array(this.heap, 0, 128);
      this.attribute_f32 = new Float32Array(this.heap, 128 * 4, 128);
      this.varying_f32 = new Float32Array(this.heap, 256 * 4, 128);
      this.result_f32 = new Float32Array(this.heap, 384 * 4, 128);
    }

    var proto = GlslProgramJavascriptContext.prototype;
    /*
    Copyright (c) 2011 Cimaron Shanahan
    
    Permission is hereby granted, free of charge, to any person obtaining a copy of
    this software and associated documentation files (the "Software"), to deal in
    the Software without restriction, including without limitation the rights to
    use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
    the Software, and to permit persons to whom the Software is furnished to do so,
    subject to the following conditions:
    
    The above copyright notice and this permission notice shall be included in all
    copies or substantial portions of the Software.
    
    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
    FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
    COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
    IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
    CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
    */

    /**
     * GlslProgramJavascriptVars Class
     */

    function GlslProgramJavascriptVars() {
      this.uniform = {};
      this.attribute = {};
      this.varying = {};
    }

    var proto = GlslProgramJavascriptVars.prototype;
    /**
     * Add uniform variable
     */

    proto.addUniform = function (name, pos, slots, comp) {
      this.uniform[name] = new GlslProgramJavascriptVar(name, pos, slots, comp, 'uniform');
      return this.uniform[name];
    };
    /**
     * Add attribute variable
     */


    proto.addAttribute = function (name, pos, slots, comp) {
      this.attribute[name] = new GlslProgramJavascriptVar(name, pos, slots, comp, 'attribute');
      return this.attribute[name];
    };
    /**
     * Add varying variable
     */


    proto.addVarying = function (name, pos, slots, comp) {
      this.varying[name] = new GlslProgramJavascriptVar(name, pos, slots, comp, 'varying');
      return this.varying[name];
    };
    /**
     * GlslProgramJavascriptVar Class
     */


    function GlslProgramJavascriptVar(name, pos, slots, comp, type) {
      this.name = name;
      this.pos = pos;
      this.slots = slots;
      this.components = comp;
      this.type = type;
    } //this.glsl = glsl;


    if ('object' !== 'undefined') {
      module.exports = glsl;
    }
  })();
});

var ast$1 = createCommonjsModule(function (module, exports) {
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.makeEveryOtherGenerator = exports.makeGenerator = exports.visit = exports.evaluate = void 0;
var isNode = function (node) { return !!(node === null || node === void 0 ? void 0 : node.type); };
var isTraversable = function (node) { return isNode(node) || Array.isArray(node); };
var evaluate = function (ast, visitors) {
    var visit = function (node) {
        var visitor = visitors[node.type];
        if (!visitor) {
            throw new Error("No evaluate() visitor for " + node.type);
        }
        return visitors[node.type](node, visit);
    };
    return visit(ast);
};
exports.evaluate = evaluate;
var makePath = function (node, parent, parentPath, key, index) { return ({
    node: node,
    parent: parent,
    parentPath: parentPath,
    key: key,
    index: index,
    skip: function () {
        this.skipped = true;
    },
    remove: function () {
        this.removed = true;
    },
    replaceWith: function (replacer) {
        this.replaced = replacer;
    },
    findParent: function (test) {
        return !parentPath
            ? parentPath
            : test(parentPath)
                ? parentPath
                : parentPath.findParent(test);
    },
}); };
/**
 * Apply the visitor pattern to an AST that conforms to this compiler's spec
 */
var visit = function (ast, visitors) {
    var visitNode = function (node, parent, parentPath, key, index) {
        var _a;
        var visitor = visitors[node.type];
        var path = makePath(node, parent, parentPath, key, index);
        if (visitor === null || visitor === void 0 ? void 0 : visitor.enter) {
            visitor.enter(path);
            if (path.removed) {
                if (!key || !parent) {
                    throw new Error("Asked to remove " + node.id + " but no parent key was present in " + (parent === null || parent === void 0 ? void 0 : parent.id));
                }
                if (typeof index === 'number') {
                    parent[key].splice(index, 1);
                }
                else {
                    parent[key] = null;
                }
                return path;
            }
            if (path.replaced) {
                if (!key || !parent) {
                    throw new Error("Asked to remove " + node.id + " but no parent key was present in " + (parent === null || parent === void 0 ? void 0 : parent.id));
                }
                if (typeof index === 'number') {
                    parent[key].splice(index, 1, path.replaced);
                }
                else {
                    parent[key] = path.replaced;
                }
            }
            if (path.skipped) {
                return path;
            }
        }
        Object.entries(node)
            .filter(function (_a) {
            var nodeKey = _a[0], nodeValue = _a[1];
            return isTraversable(nodeValue);
        })
            .forEach(function (_a) {
            var nodeKey = _a[0], nodeValue = _a[1];
            if (Array.isArray(nodeValue)) {
                for (var i = 0, offset = 0; i - offset < nodeValue.length; i++) {
                    var child = nodeValue[i - offset];
                    var res = visitNode(child, node, path, nodeKey, i - offset);
                    if (res === null || res === void 0 ? void 0 : res.removed) {
                        offset += 1;
                    }
                }
            }
            else {
                visitNode(nodeValue, node, path, nodeKey);
            }
        });
        (_a = visitor === null || visitor === void 0 ? void 0 : visitor.exit) === null || _a === void 0 ? void 0 : _a.call(visitor, path);
        // visitor?.exit?.(node, parent, key, index);
    };
    return visitNode(ast);
};
exports.visit = visit;
/**
 * Stringify an AST
 */
var makeGenerator = function (generators) {
    var gen = function (ast) {
        return typeof ast === 'string'
            ? ast
            : ast === null || ast === undefined
                ? ''
                : Array.isArray(ast)
                    ? ast.map(gen).join('')
                    : ast.type in generators
                        ? generators[ast.type](ast)
                        : "NO GENERATOR FOR " + ast.type + ast;
    };
    return gen;
};
exports.makeGenerator = makeGenerator;
var makeEveryOtherGenerator = function (generate) {
    var everyOther = function (nodes, eo) {
        return nodes.reduce(function (output, node, index) {
            return output +
                generate(node) +
                (index === nodes.length - 1 ? '' : generate(eo[index]));
        }, '');
    };
    return everyOther;
};
exports.makeEveryOtherGenerator = makeEveryOtherGenerator;
});

var ast$2 = /*@__PURE__*/getDefaultExportFromCjs(ast$1);

"use strict";


var generators = {
    program: function (node) { return generate(node.ws) + generate(node.program); },
    preprocessor: function (node) { return generate(node.line) + generate(node._); },
    keyword: function (node) { return generate(node.token) + generate(node.whitespace); },
    precision: function (node) {
        return generate(node.prefix) + generate(node.qualifier) + generate(node.specifier);
    },
    // Statements
    expression_statement: function (node) {
        return generate(node.expression) + generate(node.semi);
    },
    if_statement: function (node) {
        return generate(node.if) +
            generate(node.lp) +
            generate(node.condition) +
            generate(node.rp) +
            generate(node.body) +
            generate(node.else);
    },
    switch_statement: function (node) {
        return generate(node.switch) +
            generate(node.lp) +
            generate(node.expression) +
            generate(node.rp) +
            generate(node.lb) +
            generate(node.cases) +
            generate(node.rb);
    },
    break_statement: function (node) { return generate(node.break) + generate(node.semi); },
    do_statement: function (node) {
        return generate(node.do) +
            generate(node.body) +
            generate(node.while) +
            generate(node.lp) +
            generate(node.expression) +
            generate(node.rp) +
            generate(node.semi);
    },
    continue_statement: function (node) { return generate(node.continue) + generate(node.semi); },
    return_statement: function (node) {
        return generate(node.return) + generate(node.expression) + generate(node.semi);
    },
    discard_statement: function (node) { return generate(node.discard) + generate(node.semi); },
    while_statement: function (node) {
        return generate(node.while) +
            generate(node.lp) +
            generate(node.condition) +
            generate(node.rp) +
            generate(node.body);
    },
    for_statement: function (node) {
        return generate(node.for) +
            generate(node.lp) +
            generate(node.init) +
            generate(node.initSemi) +
            generate(node.condition) +
            generate(node.conditionSemi) +
            generate(node.operation) +
            generate(node.rp) +
            generate(node.body);
    },
    condition_expression: function (node) {
        return generate(node.specified_type) +
            generate(node.identifier) +
            generate(node.declarator) +
            generate(node.op) +
            generate(node.initializer);
    },
    declaration_statement: function (node) {
        return generate(node.declaration) + generate(node.semi);
    },
    fully_specified_type: function (node) {
        return generate(node.qualifiers) + generate(node.specifier);
    },
    layout_qualifier: function (node) {
        return generate(node.layout) +
            generate(node.lp) +
            generateWithEveryOther(node.qualifiers, node.commas) +
            generate(node.rp);
    },
    layout_qualifier_id: function (node) {
        return generate(node.identifier) +
            generate(node.operator) +
            generate(node.expression);
    },
    switch_case: function (node) {
        return generate(node.case) +
            generate(node.test) +
            generate(node.colon) +
            generate(node.statements);
    },
    default_case: function (node) {
        return generate(node.default) + generate(node.colon) + generate(node.statements);
    },
    declaration: function (node) {
        return generate(node.specified_type) +
            generate(node.identifier) +
            generate(node.quantifier) +
            generate(node.operator) +
            generate(node.initializer);
    },
    declarator_list: function (node) {
        return generate(node.specified_type) +
            generateWithEveryOther(node.declarations, node.commas);
    },
    declarator: function (node) {
        return generate(node.specified_type) +
            generate(node.identifier) +
            generate(node.qualifiers) +
            generate(node.quantifier);
    },
    type_specifier: function (node) {
        return generate(node.specifier) +
            generate(node.quantifier) +
            generate(node.declarations);
    },
    array_specifiers: function (node) { return generate(node.specifiers); },
    array_specifier: function (node) {
        return generate(node.lb) + generate(node.expression) + generate(node.rb);
    },
    identifier: function (node) { return node.identifier + generate(node.whitespace); },
    function: function (node) {
        return generate(node['prototype']) + generate(node.body) + generate(node.rp);
    },
    function_header: function (node) {
        return generate(node.returnType) + generate(node.name) + generate(node.lp);
    },
    function_prototype: function (node) {
        return generate(node.header.returnType) +
            generate(node.header.name) +
            generate(node.header.lp) +
            (node.parameters
                ? generateWithEveryOther(node.parameters, node.commas)
                : '') +
            generate(node.rp);
    },
    parameter_declaration: function (node) {
        return generate(node.qualifier) + generate(node.declaration);
    },
    compound_statement: function (node) {
        return generate(node.lb) + generate(node.statements) + generate(node.rb);
    },
    function_call: function (node) {
        return generate(node.identifier) +
            generate(node.lp) +
            generate(node.args) +
            generate(node.rp);
    },
    parameter_declarator: function (node) {
        return generate(node.qualifier) +
            generate(node.specifier) +
            generate(node.identifier) +
            generate(node.quantifier);
    },
    postfix: function (node) { return generate(node.expr) + generate(node.postfix); },
    quantifier: function (node) {
        return generate(node.lb) + generate(node.expr) + generate(node.rb);
    },
    quantified_identifier: function (node) {
        return generate(node.identifier) + generate(node.quantifier);
    },
    field_selection: function (node) { return generate(node.dot) + generate(node.selection); },
    subroutine_qualifier: function (node) {
        return generate(node.subroutine) +
            generate(node.lp) +
            generate(node.type_names) +
            generate(node.commas) +
            generate(node.rp);
    },
    assignment: function (node) {
        return generate(node.left) + generate(node.operator) + generate(node.right);
    },
    ternary: function (node) {
        return generate(node.expr) +
            generate(node.question) +
            generate(node.left) +
            generate(node.colon) +
            generate(node.right);
    },
    binary: function (node) {
        return generate(node.left) + generate(node.operator) + generate(node.right);
    },
    group: function (node) {
        return generate(node.lp) + generate(node.expression) + generate(node.rp);
    },
    unary: function (node) { return generate(node.operator) + generate(node.expression); },
    float_constant: function (node) { return generate(node.token) + generate(node.whitespace); },
    double_constant: function (node) { return generate(node.token) + generate(node.whitespace); },
    int_constant: function (node) { return generate(node.token) + generate(node.whitespace); },
    uint_constant: function (node) { return generate(node.token) + generate(node.whitespace); },
    bool_constant: function (node) { return generate(node.token) + generate(node.whitespace); },
    literal: function (node) { return generate(node.literal) + generate(node.whitespace); },
    struct: function (node) {
        return generate(node.struct) +
            generate(node.typeName) +
            generate(node.lb) +
            generate(node.declarations) +
            generate(node.rb);
    },
    struct_declaration: function (node) {
        return generate(node.declaration) + generate(node.semi);
    },
    interface_declarator: function (node) {
        return generate(node.qualifiers) +
            generate(node.interface_type) +
            generate(node.lp) +
            generate(node.declarations) +
            generate(node.rp) +
            generate(node.identifier);
    },
    struct_declarator: function (node) {
        return generate(node.specified_type) +
            generateWithEveryOther(node.declarations, node.commas);
    },
    initializer_list: function (node) {
        return generate(node.lb) +
            generateWithEveryOther(node.initializers, node.commas) +
            generate(node.rb);
    },
    qualifier_declarator: function (node) {
        return generate(node.qualifiers) +
            generateWithEveryOther(node.declarations, node.commas);
    },
};
var generate = (0, ast$1.makeGenerator)(generators);
var generateWithEveryOther = (0, ast$1.makeEveryOtherGenerator)(generate);
var _default = generate;

var generator = /*#__PURE__*/Object.defineProperty({
	default: _default
}, '__esModule', {value: true});

// Generated by Peggy 1.2.0.
//
// https://peggyjs.org/

"use strict";

function peg$subclass(child, parent) {
  function C() { this.constructor = child; }
  C.prototype = parent.prototype;
  child.prototype = new C();
}

function peg$SyntaxError(message, expected, found, location) {
  var self = Error.call(this, message);
  if (Object.setPrototypeOf) {
    Object.setPrototypeOf(self, peg$SyntaxError.prototype);
  }
  self.expected = expected;
  self.found = found;
  self.location = location;
  self.name = "SyntaxError";
  return self;
}

peg$subclass(peg$SyntaxError, Error);

function peg$padEnd(str, targetLength, padString) {
  padString = padString || " ";
  if (str.length > targetLength) { return str; }
  targetLength -= str.length;
  padString += padString.repeat(targetLength);
  return str + padString.slice(0, targetLength);
}

peg$SyntaxError.prototype.format = function(sources) {
  var str = "Error: " + this.message;
  if (this.location) {
    var src = null;
    var k;
    for (k = 0; k < sources.length; k++) {
      if (sources[k].source === this.location.source) {
        src = sources[k].text.split(/\r\n|\n|\r/g);
        break;
      }
    }
    var s = this.location.start;
    var loc = this.location.source + ":" + s.line + ":" + s.column;
    if (src) {
      var e = this.location.end;
      var filler = peg$padEnd("", s.line.toString().length);
      var line = src[s.line - 1];
      var last = s.line === e.line ? e.column : line.length + 1;
      str += "\n --> " + loc + "\n"
          + filler + " |\n"
          + s.line + " | " + line + "\n"
          + filler + " | " + peg$padEnd("", s.column - 1)
          + peg$padEnd("", last - s.column, "^");
    } else {
      str += "\n at " + loc;
    }
  }
  return str;
};

peg$SyntaxError.buildMessage = function(expected, found) {
  var DESCRIBE_EXPECTATION_FNS = {
    literal: function(expectation) {
      return "\"" + literalEscape(expectation.text) + "\"";
    },

    class: function(expectation) {
      var escapedParts = expectation.parts.map(function(part) {
        return Array.isArray(part)
          ? classEscape(part[0]) + "-" + classEscape(part[1])
          : classEscape(part);
      });

      return "[" + (expectation.inverted ? "^" : "") + escapedParts + "]";
    },

    any: function() {
      return "any character";
    },

    end: function() {
      return "end of input";
    },

    other: function(expectation) {
      return expectation.description;
    }
  };

  function hex(ch) {
    return ch.charCodeAt(0).toString(16).toUpperCase();
  }

  function literalEscape(s) {
    return s
      .replace(/\\/g, "\\\\")
      .replace(/"/g,  "\\\"")
      .replace(/\0/g, "\\0")
      .replace(/\t/g, "\\t")
      .replace(/\n/g, "\\n")
      .replace(/\r/g, "\\r")
      .replace(/[\x00-\x0F]/g,          function(ch) { return "\\x0" + hex(ch); })
      .replace(/[\x10-\x1F\x7F-\x9F]/g, function(ch) { return "\\x"  + hex(ch); });
  }

  function classEscape(s) {
    return s
      .replace(/\\/g, "\\\\")
      .replace(/\]/g, "\\]")
      .replace(/\^/g, "\\^")
      .replace(/-/g,  "\\-")
      .replace(/\0/g, "\\0")
      .replace(/\t/g, "\\t")
      .replace(/\n/g, "\\n")
      .replace(/\r/g, "\\r")
      .replace(/[\x00-\x0F]/g,          function(ch) { return "\\x0" + hex(ch); })
      .replace(/[\x10-\x1F\x7F-\x9F]/g, function(ch) { return "\\x"  + hex(ch); });
  }

  function describeExpectation(expectation) {
    return DESCRIBE_EXPECTATION_FNS[expectation.type](expectation);
  }

  function describeExpected(expected) {
    var descriptions = expected.map(describeExpectation);
    var i, j;

    descriptions.sort();

    if (descriptions.length > 0) {
      for (i = 1, j = 1; i < descriptions.length; i++) {
        if (descriptions[i - 1] !== descriptions[i]) {
          descriptions[j] = descriptions[i];
          j++;
        }
      }
      descriptions.length = j;
    }

    switch (descriptions.length) {
      case 1:
        return descriptions[0];

      case 2:
        return descriptions[0] + " or " + descriptions[1];

      default:
        return descriptions.slice(0, -1).join(", ")
          + ", or "
          + descriptions[descriptions.length - 1];
    }
  }

  function describeFound(found) {
    return found ? "\"" + literalEscape(found) + "\"" : "end of input";
  }

  return "Expected " + describeExpected(expected) + " but " + describeFound(found) + " found.";
};

function peg$parse(input, options) {
  options = options !== undefined ? options : {};

  var peg$FAILED = {};
  var peg$source = options.grammarSource;

  var peg$startRuleFunctions = { start: peg$parsestart };
  var peg$startRuleFunction = peg$parsestart;

  var peg$c0 = "attribute";
  var peg$c1 = "varying";
  var peg$c2 = "const";
  var peg$c3 = "bool";
  var peg$c4 = "float";
  var peg$c5 = "double";
  var peg$c6 = "int";
  var peg$c7 = "uint";
  var peg$c8 = "break";
  var peg$c9 = "continue";
  var peg$c10 = "do";
  var peg$c11 = "else";
  var peg$c12 = "for";
  var peg$c13 = "if";
  var peg$c14 = "discard";
  var peg$c15 = "return";
  var peg$c16 = "switch";
  var peg$c17 = "case";
  var peg$c18 = "default";
  var peg$c19 = "subroutine";
  var peg$c20 = "bvec2";
  var peg$c21 = "bvec3";
  var peg$c22 = "bvec4";
  var peg$c23 = "ivec2";
  var peg$c24 = "ivec3";
  var peg$c25 = "ivec4";
  var peg$c26 = "uvec2";
  var peg$c27 = "uvec3";
  var peg$c28 = "uvec4";
  var peg$c29 = "vec2";
  var peg$c30 = "vec3";
  var peg$c31 = "vec4";
  var peg$c32 = "mat2";
  var peg$c33 = "mat3";
  var peg$c34 = "mat4";
  var peg$c35 = "centroid";
  var peg$c36 = "in";
  var peg$c37 = "out";
  var peg$c38 = "inout";
  var peg$c39 = "uniform";
  var peg$c40 = "patch";
  var peg$c41 = "sample";
  var peg$c42 = "buffer";
  var peg$c43 = "shared";
  var peg$c44 = "coherent";
  var peg$c45 = "volatile";
  var peg$c46 = "restrict";
  var peg$c47 = "readonly";
  var peg$c48 = "writeonly";
  var peg$c49 = "dvec2";
  var peg$c50 = "dvec3";
  var peg$c51 = "dvec4";
  var peg$c52 = "dmat2";
  var peg$c53 = "dmat3";
  var peg$c54 = "dmat4";
  var peg$c55 = "noperspective";
  var peg$c56 = "flat";
  var peg$c57 = "smooth";
  var peg$c58 = "layout";
  var peg$c59 = "mat2x2";
  var peg$c60 = "mat2x3";
  var peg$c61 = "mat2x4";
  var peg$c62 = "mat3x2";
  var peg$c63 = "mat3x3";
  var peg$c64 = "mat3x4";
  var peg$c65 = "mat4x2";
  var peg$c66 = "mat4x3";
  var peg$c67 = "mat4x4";
  var peg$c68 = "dmat2x2";
  var peg$c69 = "dmat2x3";
  var peg$c70 = "dmat2x4";
  var peg$c71 = "dmat3x2";
  var peg$c72 = "dmat3x3";
  var peg$c73 = "dmat3x4";
  var peg$c74 = "dmat4x2";
  var peg$c75 = "dmat4x3";
  var peg$c76 = "dmat4x4";
  var peg$c77 = "atomic_uint";
  var peg$c78 = "sampler1D";
  var peg$c79 = "sampler2D";
  var peg$c80 = "sampler3D";
  var peg$c81 = "samplerCube";
  var peg$c82 = "sampler1DShadow";
  var peg$c83 = "sampler2DShadow";
  var peg$c84 = "samplerCubeShadow";
  var peg$c85 = "sampler1DArray";
  var peg$c86 = "sampler2DArray";
  var peg$c87 = "sampler1DArrayShadow";
  var peg$c88 = "sampler2DArrayshadow";
  var peg$c89 = "isampler1D";
  var peg$c90 = "isampler2D";
  var peg$c91 = "isampler3D";
  var peg$c92 = "isamplerCube";
  var peg$c93 = "isampler1Darray";
  var peg$c94 = "isampler2DArray";
  var peg$c95 = "usampler1D";
  var peg$c96 = "usampler2D";
  var peg$c97 = "usampler3D";
  var peg$c98 = "usamplerCube";
  var peg$c99 = "usampler1DArray";
  var peg$c100 = "usampler2DArray";
  var peg$c101 = "sampler2DRect";
  var peg$c102 = "sampler2DRectshadow";
  var peg$c103 = "isampler2DRect";
  var peg$c104 = "usampler2DRect";
  var peg$c105 = "samplerBuffer";
  var peg$c106 = "isamplerBuffer";
  var peg$c107 = "usamplerBuffer";
  var peg$c108 = "samplerCubeArray";
  var peg$c109 = "samplerCubeArrayShadow";
  var peg$c110 = "isamplerCubeArray";
  var peg$c111 = "usamplerCubeArray";
  var peg$c112 = "sampler2DMS";
  var peg$c113 = "isampler2DMS";
  var peg$c114 = "usampler2DMS";
  var peg$c115 = "sampler2DMSArray";
  var peg$c116 = "isampler2DMSArray";
  var peg$c117 = "usampler2DMSArray";
  var peg$c118 = "image1D";
  var peg$c119 = "iimage1D";
  var peg$c120 = "uimage1D";
  var peg$c121 = "image2D";
  var peg$c122 = "iimage2D";
  var peg$c123 = "uimage2D";
  var peg$c124 = "image3D";
  var peg$c125 = "iimage3D";
  var peg$c126 = "uimage3D";
  var peg$c127 = "image2DRect";
  var peg$c128 = "iimage2DRect";
  var peg$c129 = "uimage2DRect";
  var peg$c130 = "imageCube";
  var peg$c131 = "iimageCube";
  var peg$c132 = "uimageCube";
  var peg$c133 = "imageBuffer";
  var peg$c134 = "iimageBuffer";
  var peg$c135 = "uimageBuffer";
  var peg$c136 = "image1DArray";
  var peg$c137 = "iimage1DArray";
  var peg$c138 = "uimage1DArray";
  var peg$c139 = "image2DArray";
  var peg$c140 = "iimage2DArray";
  var peg$c141 = "uimage2DArray";
  var peg$c142 = "imageCubeArray";
  var peg$c143 = "iimageCubeArray";
  var peg$c144 = "uimageCubeArray";
  var peg$c145 = "image2DMS";
  var peg$c146 = "iimage2DMS";
  var peg$c147 = "uimage2DMS";
  var peg$c148 = "image2DMArray";
  var peg$c149 = "iimage2DMSArray";
  var peg$c150 = "uimage2DMSArray";
  var peg$c151 = "struct";
  var peg$c152 = "void";
  var peg$c153 = "while";
  var peg$c154 = "invariant";
  var peg$c155 = "precise";
  var peg$c156 = "highp";
  var peg$c157 = "mediump";
  var peg$c158 = "lowp";
  var peg$c159 = "precision";
  var peg$c160 = "true";
  var peg$c161 = "false";
  var peg$c162 = "<<";
  var peg$c163 = ">>";
  var peg$c164 = "++";
  var peg$c165 = "--";
  var peg$c166 = "<=";
  var peg$c167 = ">=";
  var peg$c168 = "==";
  var peg$c169 = "!=";
  var peg$c170 = "&&";
  var peg$c171 = "||";
  var peg$c172 = "^^";
  var peg$c173 = "*=";
  var peg$c174 = "/=";
  var peg$c175 = "+=";
  var peg$c176 = "%=";
  var peg$c177 = "<<=";
  var peg$c178 = ">>=";
  var peg$c179 = "&=";
  var peg$c180 = "^=";
  var peg$c181 = "|=";
  var peg$c182 = "-=";
  var peg$c183 = "(";
  var peg$c184 = ")";
  var peg$c185 = "[";
  var peg$c186 = "]";
  var peg$c187 = "{";
  var peg$c188 = "}";
  var peg$c189 = ".";
  var peg$c190 = ",";
  var peg$c191 = ":";
  var peg$c192 = "=";
  var peg$c193 = ";";
  var peg$c194 = "!";
  var peg$c195 = "-";
  var peg$c196 = "~";
  var peg$c197 = "+";
  var peg$c198 = "*";
  var peg$c199 = "/";
  var peg$c200 = "%";
  var peg$c201 = "<";
  var peg$c202 = ">";
  var peg$c203 = "|";
  var peg$c204 = "^";
  var peg$c205 = "&";
  var peg$c206 = "?";
  var peg$c207 = "0";
  var peg$c208 = "lf";
  var peg$c209 = "LF";
  var peg$c210 = "#";
  var peg$c211 = "//";
  var peg$c212 = "/*";
  var peg$c213 = "*/";

  var peg$r0 = /^[A-Za-z_]/;
  var peg$r1 = /^[A-Za-z_0-9]/;
  var peg$r2 = /^[uU]/;
  var peg$r3 = /^[1-9]/;
  var peg$r4 = /^[0-7]/;
  var peg$r5 = /^[xX]/;
  var peg$r6 = /^[0-9a-fA-F]/;
  var peg$r7 = /^[0-9]/;
  var peg$r8 = /^[eE]/;
  var peg$r9 = /^[+\-]/;
  var peg$r10 = /^[fF]/;
  var peg$r11 = /^[^\n]/;
  var peg$r12 = /^[ \t\n\r]/;

  var peg$e0 = peg$literalExpectation("attribute", false);
  var peg$e1 = peg$literalExpectation("varying", false);
  var peg$e2 = peg$literalExpectation("const", false);
  var peg$e3 = peg$literalExpectation("bool", false);
  var peg$e4 = peg$literalExpectation("float", false);
  var peg$e5 = peg$literalExpectation("double", false);
  var peg$e6 = peg$literalExpectation("int", false);
  var peg$e7 = peg$literalExpectation("uint", false);
  var peg$e8 = peg$literalExpectation("break", false);
  var peg$e9 = peg$literalExpectation("continue", false);
  var peg$e10 = peg$literalExpectation("do", false);
  var peg$e11 = peg$literalExpectation("else", false);
  var peg$e12 = peg$literalExpectation("for", false);
  var peg$e13 = peg$literalExpectation("if", false);
  var peg$e14 = peg$literalExpectation("discard", false);
  var peg$e15 = peg$literalExpectation("return", false);
  var peg$e16 = peg$literalExpectation("switch", false);
  var peg$e17 = peg$literalExpectation("case", false);
  var peg$e18 = peg$literalExpectation("default", false);
  var peg$e19 = peg$literalExpectation("subroutine", false);
  var peg$e20 = peg$literalExpectation("bvec2", false);
  var peg$e21 = peg$literalExpectation("bvec3", false);
  var peg$e22 = peg$literalExpectation("bvec4", false);
  var peg$e23 = peg$literalExpectation("ivec2", false);
  var peg$e24 = peg$literalExpectation("ivec3", false);
  var peg$e25 = peg$literalExpectation("ivec4", false);
  var peg$e26 = peg$literalExpectation("uvec2", false);
  var peg$e27 = peg$literalExpectation("uvec3", false);
  var peg$e28 = peg$literalExpectation("uvec4", false);
  var peg$e29 = peg$literalExpectation("vec2", false);
  var peg$e30 = peg$literalExpectation("vec3", false);
  var peg$e31 = peg$literalExpectation("vec4", false);
  var peg$e32 = peg$literalExpectation("mat2", false);
  var peg$e33 = peg$literalExpectation("mat3", false);
  var peg$e34 = peg$literalExpectation("mat4", false);
  var peg$e35 = peg$literalExpectation("centroid", false);
  var peg$e36 = peg$literalExpectation("in", false);
  var peg$e37 = peg$literalExpectation("out", false);
  var peg$e38 = peg$literalExpectation("inout", false);
  var peg$e39 = peg$literalExpectation("uniform", false);
  var peg$e40 = peg$literalExpectation("patch", false);
  var peg$e41 = peg$literalExpectation("sample", false);
  var peg$e42 = peg$literalExpectation("buffer", false);
  var peg$e43 = peg$literalExpectation("shared", false);
  var peg$e44 = peg$literalExpectation("coherent", false);
  var peg$e45 = peg$literalExpectation("volatile", false);
  var peg$e46 = peg$literalExpectation("restrict", false);
  var peg$e47 = peg$literalExpectation("readonly", false);
  var peg$e48 = peg$literalExpectation("writeonly", false);
  var peg$e49 = peg$literalExpectation("dvec2", false);
  var peg$e50 = peg$literalExpectation("dvec3", false);
  var peg$e51 = peg$literalExpectation("dvec4", false);
  var peg$e52 = peg$literalExpectation("dmat2", false);
  var peg$e53 = peg$literalExpectation("dmat3", false);
  var peg$e54 = peg$literalExpectation("dmat4", false);
  var peg$e55 = peg$literalExpectation("noperspective", false);
  var peg$e56 = peg$literalExpectation("flat", false);
  var peg$e57 = peg$literalExpectation("smooth", false);
  var peg$e58 = peg$literalExpectation("layout", false);
  var peg$e59 = peg$literalExpectation("mat2x2", false);
  var peg$e60 = peg$literalExpectation("mat2x3", false);
  var peg$e61 = peg$literalExpectation("mat2x4", false);
  var peg$e62 = peg$literalExpectation("mat3x2", false);
  var peg$e63 = peg$literalExpectation("mat3x3", false);
  var peg$e64 = peg$literalExpectation("mat3x4", false);
  var peg$e65 = peg$literalExpectation("mat4x2", false);
  var peg$e66 = peg$literalExpectation("mat4x3", false);
  var peg$e67 = peg$literalExpectation("mat4x4", false);
  var peg$e68 = peg$literalExpectation("dmat2x2", false);
  var peg$e69 = peg$literalExpectation("dmat2x3", false);
  var peg$e70 = peg$literalExpectation("dmat2x4", false);
  var peg$e71 = peg$literalExpectation("dmat3x2", false);
  var peg$e72 = peg$literalExpectation("dmat3x3", false);
  var peg$e73 = peg$literalExpectation("dmat3x4", false);
  var peg$e74 = peg$literalExpectation("dmat4x2", false);
  var peg$e75 = peg$literalExpectation("dmat4x3", false);
  var peg$e76 = peg$literalExpectation("dmat4x4", false);
  var peg$e77 = peg$literalExpectation("atomic_uint", false);
  var peg$e78 = peg$literalExpectation("sampler1D", false);
  var peg$e79 = peg$literalExpectation("sampler2D", false);
  var peg$e80 = peg$literalExpectation("sampler3D", false);
  var peg$e81 = peg$literalExpectation("samplerCube", false);
  var peg$e82 = peg$literalExpectation("sampler1DShadow", false);
  var peg$e83 = peg$literalExpectation("sampler2DShadow", false);
  var peg$e84 = peg$literalExpectation("samplerCubeShadow", false);
  var peg$e85 = peg$literalExpectation("sampler1DArray", false);
  var peg$e86 = peg$literalExpectation("sampler2DArray", false);
  var peg$e87 = peg$literalExpectation("sampler1DArrayShadow", false);
  var peg$e88 = peg$literalExpectation("sampler2DArrayshadow", false);
  var peg$e89 = peg$literalExpectation("isampler1D", false);
  var peg$e90 = peg$literalExpectation("isampler2D", false);
  var peg$e91 = peg$literalExpectation("isampler3D", false);
  var peg$e92 = peg$literalExpectation("isamplerCube", false);
  var peg$e93 = peg$literalExpectation("isampler1Darray", false);
  var peg$e94 = peg$literalExpectation("isampler2DArray", false);
  var peg$e95 = peg$literalExpectation("usampler1D", false);
  var peg$e96 = peg$literalExpectation("usampler2D", false);
  var peg$e97 = peg$literalExpectation("usampler3D", false);
  var peg$e98 = peg$literalExpectation("usamplerCube", false);
  var peg$e99 = peg$literalExpectation("usampler1DArray", false);
  var peg$e100 = peg$literalExpectation("usampler2DArray", false);
  var peg$e101 = peg$literalExpectation("sampler2DRect", false);
  var peg$e102 = peg$literalExpectation("sampler2DRectshadow", false);
  var peg$e103 = peg$literalExpectation("isampler2DRect", false);
  var peg$e104 = peg$literalExpectation("usampler2DRect", false);
  var peg$e105 = peg$literalExpectation("samplerBuffer", false);
  var peg$e106 = peg$literalExpectation("isamplerBuffer", false);
  var peg$e107 = peg$literalExpectation("usamplerBuffer", false);
  var peg$e108 = peg$literalExpectation("samplerCubeArray", false);
  var peg$e109 = peg$literalExpectation("samplerCubeArrayShadow", false);
  var peg$e110 = peg$literalExpectation("isamplerCubeArray", false);
  var peg$e111 = peg$literalExpectation("usamplerCubeArray", false);
  var peg$e112 = peg$literalExpectation("sampler2DMS", false);
  var peg$e113 = peg$literalExpectation("isampler2DMS", false);
  var peg$e114 = peg$literalExpectation("usampler2DMS", false);
  var peg$e115 = peg$literalExpectation("sampler2DMSArray", false);
  var peg$e116 = peg$literalExpectation("isampler2DMSArray", false);
  var peg$e117 = peg$literalExpectation("usampler2DMSArray", false);
  var peg$e118 = peg$literalExpectation("image1D", false);
  var peg$e119 = peg$literalExpectation("iimage1D", false);
  var peg$e120 = peg$literalExpectation("uimage1D", false);
  var peg$e121 = peg$literalExpectation("image2D", false);
  var peg$e122 = peg$literalExpectation("iimage2D", false);
  var peg$e123 = peg$literalExpectation("uimage2D", false);
  var peg$e124 = peg$literalExpectation("image3D", false);
  var peg$e125 = peg$literalExpectation("iimage3D", false);
  var peg$e126 = peg$literalExpectation("uimage3D", false);
  var peg$e127 = peg$literalExpectation("image2DRect", false);
  var peg$e128 = peg$literalExpectation("iimage2DRect", false);
  var peg$e129 = peg$literalExpectation("uimage2DRect", false);
  var peg$e130 = peg$literalExpectation("imageCube", false);
  var peg$e131 = peg$literalExpectation("iimageCube", false);
  var peg$e132 = peg$literalExpectation("uimageCube", false);
  var peg$e133 = peg$literalExpectation("imageBuffer", false);
  var peg$e134 = peg$literalExpectation("iimageBuffer", false);
  var peg$e135 = peg$literalExpectation("uimageBuffer", false);
  var peg$e136 = peg$literalExpectation("image1DArray", false);
  var peg$e137 = peg$literalExpectation("iimage1DArray", false);
  var peg$e138 = peg$literalExpectation("uimage1DArray", false);
  var peg$e139 = peg$literalExpectation("image2DArray", false);
  var peg$e140 = peg$literalExpectation("iimage2DArray", false);
  var peg$e141 = peg$literalExpectation("uimage2DArray", false);
  var peg$e142 = peg$literalExpectation("imageCubeArray", false);
  var peg$e143 = peg$literalExpectation("iimageCubeArray", false);
  var peg$e144 = peg$literalExpectation("uimageCubeArray", false);
  var peg$e145 = peg$literalExpectation("image2DMS", false);
  var peg$e146 = peg$literalExpectation("iimage2DMS", false);
  var peg$e147 = peg$literalExpectation("uimage2DMS", false);
  var peg$e148 = peg$literalExpectation("image2DMArray", false);
  var peg$e149 = peg$literalExpectation("iimage2DMSArray", false);
  var peg$e150 = peg$literalExpectation("uimage2DMSArray", false);
  var peg$e151 = peg$literalExpectation("struct", false);
  var peg$e152 = peg$literalExpectation("void", false);
  var peg$e153 = peg$literalExpectation("while", false);
  var peg$e154 = peg$literalExpectation("invariant", false);
  var peg$e155 = peg$literalExpectation("precise", false);
  var peg$e156 = peg$literalExpectation("highp", false);
  var peg$e157 = peg$literalExpectation("mediump", false);
  var peg$e158 = peg$literalExpectation("lowp", false);
  var peg$e159 = peg$literalExpectation("precision", false);
  var peg$e160 = peg$literalExpectation("true", false);
  var peg$e161 = peg$literalExpectation("false", false);
  var peg$e162 = peg$otherExpectation("keyword");
  var peg$e163 = peg$literalExpectation("<<", false);
  var peg$e164 = peg$literalExpectation(">>", false);
  var peg$e165 = peg$literalExpectation("++", false);
  var peg$e166 = peg$literalExpectation("--", false);
  var peg$e167 = peg$literalExpectation("<=", false);
  var peg$e168 = peg$literalExpectation(">=", false);
  var peg$e169 = peg$literalExpectation("==", false);
  var peg$e170 = peg$literalExpectation("!=", false);
  var peg$e171 = peg$literalExpectation("&&", false);
  var peg$e172 = peg$literalExpectation("||", false);
  var peg$e173 = peg$literalExpectation("^^", false);
  var peg$e174 = peg$literalExpectation("*=", false);
  var peg$e175 = peg$literalExpectation("/=", false);
  var peg$e176 = peg$literalExpectation("+=", false);
  var peg$e177 = peg$literalExpectation("%=", false);
  var peg$e178 = peg$literalExpectation("<<=", false);
  var peg$e179 = peg$literalExpectation(">>=", false);
  var peg$e180 = peg$literalExpectation("&=", false);
  var peg$e181 = peg$literalExpectation("^=", false);
  var peg$e182 = peg$literalExpectation("|=", false);
  var peg$e183 = peg$literalExpectation("-=", false);
  var peg$e184 = peg$literalExpectation("(", false);
  var peg$e185 = peg$literalExpectation(")", false);
  var peg$e186 = peg$literalExpectation("[", false);
  var peg$e187 = peg$literalExpectation("]", false);
  var peg$e188 = peg$literalExpectation("{", false);
  var peg$e189 = peg$literalExpectation("}", false);
  var peg$e190 = peg$literalExpectation(".", false);
  var peg$e191 = peg$literalExpectation(",", false);
  var peg$e192 = peg$literalExpectation(":", false);
  var peg$e193 = peg$literalExpectation("=", false);
  var peg$e194 = peg$literalExpectation(";", false);
  var peg$e195 = peg$literalExpectation("!", false);
  var peg$e196 = peg$literalExpectation("-", false);
  var peg$e197 = peg$literalExpectation("~", false);
  var peg$e198 = peg$literalExpectation("+", false);
  var peg$e199 = peg$literalExpectation("*", false);
  var peg$e200 = peg$literalExpectation("/", false);
  var peg$e201 = peg$literalExpectation("%", false);
  var peg$e202 = peg$literalExpectation("<", false);
  var peg$e203 = peg$literalExpectation(">", false);
  var peg$e204 = peg$literalExpectation("|", false);
  var peg$e205 = peg$literalExpectation("^", false);
  var peg$e206 = peg$literalExpectation("&", false);
  var peg$e207 = peg$literalExpectation("?", false);
  var peg$e208 = peg$classExpectation([["A", "Z"], ["a", "z"], "_"], false, false);
  var peg$e209 = peg$classExpectation([["A", "Z"], ["a", "z"], "_", ["0", "9"]], false, false);
  var peg$e210 = peg$classExpectation(["u", "U"], false, false);
  var peg$e211 = peg$classExpectation([["1", "9"]], false, false);
  var peg$e212 = peg$literalExpectation("0", false);
  var peg$e213 = peg$classExpectation([["0", "7"]], false, false);
  var peg$e214 = peg$classExpectation(["x", "X"], false, false);
  var peg$e215 = peg$classExpectation([["0", "9"], ["a", "f"], ["A", "F"]], false, false);
  var peg$e216 = peg$classExpectation([["0", "9"]], false, false);
  var peg$e217 = peg$otherExpectation("exponent");
  var peg$e218 = peg$classExpectation(["e", "E"], false, false);
  var peg$e219 = peg$classExpectation(["+", "-"], false, false);
  var peg$e220 = peg$classExpectation(["f", "F"], false, false);
  var peg$e221 = peg$literalExpectation("lf", false);
  var peg$e222 = peg$literalExpectation("LF", false);
  var peg$e223 = peg$otherExpectation("primary expression");
  var peg$e224 = peg$otherExpectation("unary expression");
  var peg$e225 = peg$otherExpectation("equality expression");
  var peg$e226 = peg$otherExpectation("and expression");
  var peg$e227 = peg$otherExpectation("asignment");
  var peg$e228 = peg$otherExpectation("expression");
  var peg$e229 = peg$otherExpectation("precision statement");
  var peg$e230 = peg$otherExpectation("function prototype");
  var peg$e231 = peg$otherExpectation("function header");
  var peg$e232 = peg$otherExpectation("function parameters");
  var peg$e233 = peg$otherExpectation("parameter declaration");
  var peg$e234 = peg$otherExpectation("parameter declarator");
  var peg$e235 = peg$otherExpectation("single type qualifier");
  var peg$e236 = peg$otherExpectation("interpolation qualifier");
  var peg$e237 = peg$otherExpectation("storage qualifier");
  var peg$e238 = peg$otherExpectation("type specifier");
  var peg$e239 = peg$otherExpectation("array specifier");
  var peg$e240 = peg$otherExpectation("precision qualifier");
  var peg$e241 = peg$otherExpectation("struct specifier");
  var peg$e242 = peg$otherExpectation("iteration statement");
  var peg$e243 = peg$otherExpectation("jump statement");
  var peg$e244 = peg$otherExpectation("prepocessor");
  var peg$e245 = peg$literalExpectation("#", false);
  var peg$e246 = peg$classExpectation(["\n"], true, false);
  var peg$e247 = peg$otherExpectation("whitespace");
  var peg$e248 = peg$literalExpectation("//", false);
  var peg$e249 = peg$literalExpectation("/*", false);
  var peg$e250 = peg$literalExpectation("*/", false);
  var peg$e251 = peg$anyExpectation();
  var peg$e252 = peg$classExpectation([" ", "\t", "\n", "\r"], false, false);

  var peg$f0 = function(ws, program) {
    return { type: 'program', ws, program, scopes };
  };
  var peg$f1 = function(token, t) { return node('keyword', { token, whitespace: t }); };
  var peg$f2 = function(token, _) { return node('float_constant', { token, whitespace: _ }); };
  var peg$f3 = function(token, _) { return node('double_constant', { token, whitespace: _ }); };
  var peg$f4 = function(token, _) { return node('int_constant', { token, whitespace: _ }); };
  var peg$f5 = function(token, _) { return node('uint_constant', { token, whitespace: _ }); };
  var peg$f6 = function(token, _) { return node('bool_constant', { token, whitespace:_ }); };
  var peg$f7 = function(token, _) { return node('literal', { literal: token, whitespace: _ }); };
  var peg$f8 = function(identifier, _) { return node('identifier', { identifier, whitespace: _ }); };
  var peg$f9 = function(ident) {
    const { identifier } = ident;

    // We do scope checking and parsing all in one pass. In the case of calling an
    // undefined function, here, we don't know that we're in a function, so we
    // can't warn appropriately. If we return false for the missing typename, the
    // program won't parse, since the function call node won't match since it uses
    // type_name for the function_identifier. So all we can do here is go on our
    // merry way if the type isn't known.

    // This only applies to structs. I'm not sure if it's right. Because TYPE_NAME
    // is used in lots of places, it's easier to put this check here.
    let found;
    if(found = findTypeScope(scope, identifier)) {
      addTypeReference(found, identifier, ident);
    // I removed this because a type name reference here can't be renamed because
    // it's just a string and we don't know the parent node. This might apply
    // to the type reference above as well
    // } else if(found = findFunctionScope(scope, identifier)) {
      // addFunctionReference(found, identifier, identifier);
    }
    
    return ident;
  };
  var peg$f10 = function(lp, expression, rp) {
      return node('group', { lp, expression, rp });
    };
  var peg$f11 = function(ident) {
      const { identifier } = ident;
      addBindingReference(scope, identifier, ident);
      return ident;
    };
  var peg$f12 = function(body) {
        // Postfix becomes a left associative tree
        return body.flat().reduceRight((postfix, expr) =>
            postfix ?
              node('postfix', { expr, postfix }) :
              expr
          );
      };
  var peg$f13 = function(lb, expr, rb) {
    return node('quantifier', { lb, expr, rb });
  };
  var peg$f14 = function(dot, selection) {
    return node('field_selection', { dot, selection });
  };
  var peg$f15 = function(identifier, args, rp) {
        // Warning: This may be brittle. The langauge spec says that a
        // function_call name is a "type_specifier" which can be "float[3](...)"
        // or a TYPE_NAME. If it's a TYPE_NAME, it will have an identifier, so
        // add it to the referenced scope. If it's a constructor (the "float"
        // case) it won't, so don't add a reference ot it
        const fnName = (identifier.identifier.type === 'postfix') ?
          identifier.identifier.expr.identifier.specifier.identifier :
          identifier.identifier.specifier.identifier;
        
        const n = node('function_call', { ...identifier, args, rp });

        // struct constructors are stored in scope types, not scope functions,
        // skip them (the isDeclaredType check)
        if(fnName && !isDeclaredType(scope, fnName) && !builtIns.has(fnName)) {
          if(!isDeclaredFunction(scope, fnName)) {
            warn(`Warning: Function "${fnName}" has not been declared`);
          }
          addFunctionReference(scope, fnName, n);
        }

        return n;
      };
  var peg$f16 = function(v) {
      return [v];
    };
  var peg$f17 = function(head, tail) {
        // For convenience, we don't store commas as trees, but rather flatten
        // into an array
        return [head, ...tail.flat()];
      };
  var peg$f18 = function(head, suffix, lp) {
        return { head: [head, suffix], lp };
      };
  var peg$f19 = function(identifier) {
      return {
        lp: identifier.lp,
        identifier: [identifier.head].flat().reduceRight((postfix, expr) =>
          postfix ?
            node('postfix', { expr, postfix }) :
            expr
        )
      };
      };
  var peg$f20 = function(identifier, lp, args, rp) {
        return node('function_call', { identifier, lp, args, rp });
      };
  var peg$f21 = function(operator, expression) {
        return node('unary', { operator, expression });
      };
  var peg$f22 = function(head, tail) {
        return leftAssociate(head, tail);
      };
  var peg$f23 = function(expr, question, left, colon, right) {
          return { question, left, right, colon };
        };
  var peg$f24 = function(expr, suffix) {
        // ? and : operators are right associative, which happens automatically
        // in pegjs grammar
        return suffix ?
          node('ternary', { expr, ...suffix }) :
          expr
      };
  var peg$f25 = function(left, operator, right) {
        return node('assignment', { left, operator, right });
      };
  var peg$f26 = function(declaration) {
    return node(
      'declaration_statement',
      {
          declaration: declaration[0],
          semi: declaration[1],
        }
    );
  };
  var peg$f27 = function(qualifiers, head, tail) {
      return node(
        'qualifier_declarator',
        {
          qualifiers,
          // Head is optional, so remove falsey
          declarations: xnil([head, ...tail.map(t => t[1])]),
          commas: tail.map(t => t[0])
        }
      );
    };
  var peg$f28 = function(qualifiers, interface_type, lp, declarations, rp, identifier) {
        const n = node(
          'interface_declarator',
          { qualifiers, interface_type, lp, declarations, rp, identifier }
        );
        createBindings(scope, [interface_type.identifier, n]);
        return n;
      };
  var peg$f29 = function(prefix, qualifier, specifier) {
      return node('precision', { prefix, qualifier, specifier });
    };
  var peg$f30 = function(header, params, rp) {
      const bindings = (params?.parameters || [])
        // Ignore any param without an identifier, aka main(void)
        .filter(p => !!p.declaration.identifier)
        .map(p => [p.declaration.identifier.identifier, p]);
      createBindings(scope, ...bindings);
      return node('function_prototype', { header, ...params, rp });
    };
  var peg$f31 = function(returnType, name, lp) {
        const n = node(
          'function_header',
          { returnType, name, lp }
        );
        addFunctionReference(scope, name.identifier, n);
        scope = pushScope(makeScope(name.identifier, scope));
        return n;
      };
  var peg$f32 = function(head, tail) {
      return {
        parameters: [head, ...tail.map(t => t[1])],
        commas: tail.map(t => t[0])
      }
    };
  var peg$f33 = function(qualifier, declaration) {
        return node(
          'parameter_declaration',
          { qualifier, declaration }
        );
      };
  var peg$f34 = function(specifier, identifier, quantifier) {
        return node(
          'parameter_declarator',
          { specifier, identifier, quantifier }
        );
      };
  var peg$f35 = function(head, tail) {
        const declarations = [
          head.declaration, ...tail.map(t => t[1])
        ].filter(decl => !!decl.identifier);

        createBindings(scope, ...declarations.map(decl => [decl.identifier.identifier, decl]));

        // TODO: I might need to start storing node parents for easy traversal
        return node(
          'declarator_list',
          {
            specified_type: head.specified_type,
            declarations,
            commas: tail.map(t => t[0])
          }
        );
      };
  var peg$f36 = function(identifier, quantifier, suffix) {
        const [operator, initializer] = suffix || [];
        return node(
          'declaration',
          { identifier, quantifier, operator, initializer }
        );
    };
  var peg$f37 = function(specified_type, suffix) {
        // No gaurantee of a suffix because fully_specified_type contains a
        // type_specifier which includes structs and type_names (IDENTIFIERs)
        const [identifier, quantifier, suffix_tail] = suffix || [];
        const [operator, initializer] = suffix_tail || [];

        // Break out the specified type so it can be grouped into the
        // declarator_list
        return {
          declaration: node(
            'declaration',
            { identifier, quantifier, operator, initializer }
          ),
          specified_type
        };
    };
  var peg$f38 = function(qualifiers, specifier) {
      return node(
        'fully_specified_type',
        { qualifiers, specifier }
      );
    };
  var peg$f39 = function(layout, lp, head, tail) {
          return {
            qualifiers: [head, ...tail.map(t => t[1])],
            commas: tail.map(t => t[0])
          };
        };
  var peg$f40 = function(layout, lp, qualifiers, rp) {
        return node(
          'layout_qualifier',
          { layout, lp, ...qualifiers, rp }
        );
      };
  var peg$f41 = function(identifier, tail) {
      const [operator, expression] = tail || [];
      return node('layout_qualifier_id', { identifier, operator, expression });
    };
  var peg$f42 = function(subroutine, lp, head, tail, rp) {
          return {
            lp,
            type_names: [head, ...tail.map(t => t[1])],
            commas: tail.map(t => t[0]),
            rp,
          };
        };
  var peg$f43 = function(subroutine, type_names) {
          return node(
            'subroutine_qualifier',
            {
              subroutine,
              ...type_names,
            }
          );
        };
  var peg$f44 = function(specifier, quantifier) {
      return node('type_specifier', { specifier, quantifier });
    };
  var peg$f45 = function(lb, expression, rb) {
          return node('array_specifier', { lb, expression, rb });
        };
  var peg$f46 = function(specifiers) {
        return node('array_specifiers', { specifiers });
      };
  var peg$f47 = function(struct, typeName, lb, declarations, rb) {
        const n = node('struct', { lb, declarations, rb, struct, typeName });
        // Anonymous structs don't get a type name
        if(typeName) {
          addTypes(scope, [typeName.identifier, n]);

          // Struct names also become constructors for functions. Needing to track
          // this as both a type and a function makes me think my scope data model
          // is probably wrong
          // addFunctionReference(scope, typeName.identifier, n);
        }
        return n;
      };
  var peg$f48 = function(declaration, semi) {
        return node('struct_declaration', { declaration, semi });
      };
  var peg$f49 = function(specified_type, head, tail) {
        return node(
          'struct_declarator', 
          {
            specified_type,
            declarations: [head, ...tail.map(t => t[1])],
            commas: tail.map(t => t[0])
          }
        );
      };
  var peg$f50 = function(identifier, quantifier) {
      return node('quantified_identifier', { identifier, quantifier });
    };
  var peg$f51 = function(lb, head, tail, trailing, rb) {
        // TODO: Scope
        return node(
          'initializer_list',
          {
            lb,
            initializers: [head, ...tail.map(t => t[1])],
            commas: xnil(tail.map(t => t[0]), trailing),
            rb
          }
        );
      };
  var peg$f52 = function(sym) {
      // Apparently peggy can't handle an open curly brace in a string
      scope = pushScope(makeScope(OPEN_CURLY, scope));
      return sym;
    };
  var peg$f53 = function(lb, statements, rb) {
      scope = popScope(scope);
      return node(
        'compound_statement',
        { lb, statements: (statements || []).flat(), rb }
      );
    };
  var peg$f54 = function(lb, statements, rb) {
      return node(
        'compound_statement',
        { lb, statements: (statements || []).flat(), rb }
      );
    };
  var peg$f55 = function(expression, semi) {
    return node('expression_statement', { expression, semi });
  };
  var peg$f56 = function(ifSymbol, lp, condition, rp, tail) {
        const [body, elseBranch] = tail;
        return node(
          'if_statement',
          {
            'if': ifSymbol,
            body,
            lp,
            condition,
            rp,
            ...elseBranch && { 'else': elseBranch.flat() },
          });
    };
  var peg$f57 = function(switchSymbol, lp, expression, rp, lb, statements, rb) {
        // TODO: Scope?
        return node(
          'switch_statement',
          {
            switch: switchSymbol,
            lp,
            expression,
            rp,
            lb,
            cases: groupCases(statements),
            rb
          }
        );
      };
  var peg$f58 = function(caseSymbol, test, colon) {
      return node('case_label', { 'case': caseSymbol, test, colon });
    };
  var peg$f59 = function(defaultSymbol, colon) {
      return node('default_label', { default: defaultSymbol, colon });
    };
  var peg$f60 = function(sym) {
        scope = pushScope(makeScope('while', scope));
        return sym;
      };
  var peg$f61 = function(whileSymbol, lp, condition, rp, body) {
        scope = popScope(scope);
        return node(
          'while_statement',
          {
            while: whileSymbol,
            lp,
            condition,
            rp,
            body
          }
        );
      };
  var peg$f62 = function(doSymbol, body, whileSymbol, lp, expression, rp, semi) {
        return node(
          'do_statement',
          {
            do: doSymbol,
            body,
            while: whileSymbol,
            lp,
            expression,
            rp,
            semi
          }
        );
      };
  var peg$f63 = function(sym) {
        scope = pushScope(makeScope('for', scope));
        return sym;
      };
  var peg$f64 = function(forSymbol, lp, init, condition, conditionSemi, operation, rp, body) {
        scope = popScope(scope);
        return node(
          'for_statement',
          {
            'for': forSymbol,
            body,
            lp,
            init: init.expression || init.declaration,
            initSemi: init.semi,
            condition,
            conditionSemi,
            operation,
            rp,
            body
          }
        );
      };
  var peg$f65 = function(specified_type, identifier, op, initializer) {
        const n = node(
          'condition_expression',
          { specified_type, identifier, op, initializer }
        );
        createBindings(scope, [identifier.identifier, n]);
        return n;
      };
  var peg$f66 = function(jump, semi) {
      return node('continue_statement', { continue: jump, semi });
    };
  var peg$f67 = function(jump, semi) {
      return node('break_statement', { break: jump, semi });
    };
  var peg$f68 = function(jump, expression, semi) {
      return node('return_statement', { return: jump, expression, semi });
    };
  var peg$f69 = function(jump, semi) { // Fragment shader only.
      return node('discard_statement', { discard: jump, semi });
    };
  var peg$f70 = function(line, _) { return node('preprocessor', { line, _ }); };
  var peg$f71 = function(prototype, body) {
    const n = node('function', { prototype, body });
    scope = popScope(scope);
    // addFunctionReference(scope, prototype.header.name.identifier, n);
    return n;
  };
  var peg$f72 = function(w, rest) {
    return collapse(w, rest);
  };
  var peg$f73 = function(a, x, cc) { return xnil(x, cc); };
  var peg$f74 = function(a, d) { return xnil(a, d.flat()); };
  var peg$f75 = function(i) { return i; };
  var peg$f76 = function(_) { return _; };

  var peg$currPos = 0;
  var peg$savedPos = 0;
  var peg$posDetailsCache = [{ line: 1, column: 1 }];
  var peg$maxFailPos = 0;
  var peg$maxFailExpected = [];
  var peg$silentFails = 0;

  var peg$resultsCache = {};

  var peg$result;

  if ("startRule" in options) {
    if (!(options.startRule in peg$startRuleFunctions)) {
      throw new Error("Can't start parsing from rule \"" + options.startRule + "\".");
    }

    peg$startRuleFunction = peg$startRuleFunctions[options.startRule];
  }

  function text() {
    return input.substring(peg$savedPos, peg$currPos);
  }

  function offset() {
    return peg$savedPos;
  }

  function range() {
    return {
      source: peg$source,
      start: peg$savedPos,
      end: peg$currPos
    };
  }

  function location() {
    return peg$computeLocation(peg$savedPos, peg$currPos);
  }

  function expected(description, location) {
    location = location !== undefined
      ? location
      : peg$computeLocation(peg$savedPos, peg$currPos);

    throw peg$buildStructuredError(
      [peg$otherExpectation(description)],
      input.substring(peg$savedPos, peg$currPos),
      location
    );
  }

  function error(message, location) {
    location = location !== undefined
      ? location
      : peg$computeLocation(peg$savedPos, peg$currPos);

    throw peg$buildSimpleError(message, location);
  }

  function peg$literalExpectation(text, ignoreCase) {
    return { type: "literal", text: text, ignoreCase: ignoreCase };
  }

  function peg$classExpectation(parts, inverted, ignoreCase) {
    return { type: "class", parts: parts, inverted: inverted, ignoreCase: ignoreCase };
  }

  function peg$anyExpectation() {
    return { type: "any" };
  }

  function peg$endExpectation() {
    return { type: "end" };
  }

  function peg$otherExpectation(description) {
    return { type: "other", description: description };
  }

  function peg$computePosDetails(pos) {
    var details = peg$posDetailsCache[pos];
    var p;

    if (details) {
      return details;
    } else {
      p = pos - 1;
      while (!peg$posDetailsCache[p]) {
        p--;
      }

      details = peg$posDetailsCache[p];
      details = {
        line: details.line,
        column: details.column
      };

      while (p < pos) {
        if (input.charCodeAt(p) === 10) {
          details.line++;
          details.column = 1;
        } else {
          details.column++;
        }

        p++;
      }

      peg$posDetailsCache[pos] = details;

      return details;
    }
  }

  function peg$computeLocation(startPos, endPos) {
    var startPosDetails = peg$computePosDetails(startPos);
    var endPosDetails = peg$computePosDetails(endPos);

    return {
      source: peg$source,
      start: {
        offset: startPos,
        line: startPosDetails.line,
        column: startPosDetails.column
      },
      end: {
        offset: endPos,
        line: endPosDetails.line,
        column: endPosDetails.column
      }
    };
  }

  function peg$fail(expected) {
    if (peg$currPos < peg$maxFailPos) { return; }

    if (peg$currPos > peg$maxFailPos) {
      peg$maxFailPos = peg$currPos;
      peg$maxFailExpected = [];
    }

    peg$maxFailExpected.push(expected);
  }

  function peg$buildSimpleError(message, location) {
    return new peg$SyntaxError(message, null, null, location);
  }

  function peg$buildStructuredError(expected, found, location) {
    return new peg$SyntaxError(
      peg$SyntaxError.buildMessage(expected, found),
      expected,
      found,
      location
    );
  }

  function peg$parsestart() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 0;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$parse_();
    s2 = peg$parsetranslation_unit();
    if (s2 !== peg$FAILED) {
      peg$savedPos = s0;
      s0 = peg$f0(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseATTRIBUTE() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 1;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 9) === peg$c0) {
      s1 = peg$c0;
      peg$currPos += 9;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e0); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseVARYING() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 2;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 7) === peg$c1) {
      s1 = peg$c1;
      peg$currPos += 7;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e1); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseCONST() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 3;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 5) === peg$c2) {
      s1 = peg$c2;
      peg$currPos += 5;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e2); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseBOOL() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 4;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 4) === peg$c3) {
      s1 = peg$c3;
      peg$currPos += 4;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e3); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseFLOAT() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 5;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 5) === peg$c4) {
      s1 = peg$c4;
      peg$currPos += 5;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e4); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseDOUBLE() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 6;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 6) === peg$c5) {
      s1 = peg$c5;
      peg$currPos += 6;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e5); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseINT() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 7;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 3) === peg$c6) {
      s1 = peg$c6;
      peg$currPos += 3;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e6); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseUINT() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 8;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 4) === peg$c7) {
      s1 = peg$c7;
      peg$currPos += 4;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e7); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseBREAK() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 9;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 5) === peg$c8) {
      s1 = peg$c8;
      peg$currPos += 5;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e8); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseCONTINUE() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 10;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 8) === peg$c9) {
      s1 = peg$c9;
      peg$currPos += 8;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e9); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseDO() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 11;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 2) === peg$c10) {
      s1 = peg$c10;
      peg$currPos += 2;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e10); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseELSE() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 12;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 4) === peg$c11) {
      s1 = peg$c11;
      peg$currPos += 4;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e11); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseFOR() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 13;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 3) === peg$c12) {
      s1 = peg$c12;
      peg$currPos += 3;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e12); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseIF() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 14;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 2) === peg$c13) {
      s1 = peg$c13;
      peg$currPos += 2;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e13); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseDISCARD() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 15;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 7) === peg$c14) {
      s1 = peg$c14;
      peg$currPos += 7;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e14); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseRETURN() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 16;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 6) === peg$c15) {
      s1 = peg$c15;
      peg$currPos += 6;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e15); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseSWITCH() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 17;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 6) === peg$c16) {
      s1 = peg$c16;
      peg$currPos += 6;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e16); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseCASE() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 18;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 4) === peg$c17) {
      s1 = peg$c17;
      peg$currPos += 4;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e17); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseDEFAULT() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 19;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 7) === peg$c18) {
      s1 = peg$c18;
      peg$currPos += 7;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e18); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseSUBROUTINE() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 20;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 10) === peg$c19) {
      s1 = peg$c19;
      peg$currPos += 10;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e19); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseBVEC2() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 21;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 5) === peg$c20) {
      s1 = peg$c20;
      peg$currPos += 5;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e20); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseBVEC3() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 22;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 5) === peg$c21) {
      s1 = peg$c21;
      peg$currPos += 5;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e21); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseBVEC4() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 23;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 5) === peg$c22) {
      s1 = peg$c22;
      peg$currPos += 5;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e22); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseIVEC2() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 24;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 5) === peg$c23) {
      s1 = peg$c23;
      peg$currPos += 5;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e23); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseIVEC3() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 25;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 5) === peg$c24) {
      s1 = peg$c24;
      peg$currPos += 5;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e24); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseIVEC4() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 26;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 5) === peg$c25) {
      s1 = peg$c25;
      peg$currPos += 5;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e25); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseUVEC2() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 27;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 5) === peg$c26) {
      s1 = peg$c26;
      peg$currPos += 5;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e26); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseUVEC3() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 28;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 5) === peg$c27) {
      s1 = peg$c27;
      peg$currPos += 5;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e27); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseUVEC4() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 29;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 5) === peg$c28) {
      s1 = peg$c28;
      peg$currPos += 5;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e28); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseVEC2() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 30;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 4) === peg$c29) {
      s1 = peg$c29;
      peg$currPos += 4;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e29); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseVEC3() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 31;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 4) === peg$c30) {
      s1 = peg$c30;
      peg$currPos += 4;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e30); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseVEC4() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 32;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 4) === peg$c31) {
      s1 = peg$c31;
      peg$currPos += 4;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e31); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseMAT2() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 33;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 4) === peg$c32) {
      s1 = peg$c32;
      peg$currPos += 4;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e32); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseMAT3() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 34;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 4) === peg$c33) {
      s1 = peg$c33;
      peg$currPos += 4;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e33); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseMAT4() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 35;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 4) === peg$c34) {
      s1 = peg$c34;
      peg$currPos += 4;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e34); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseCENTROID() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 36;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 8) === peg$c35) {
      s1 = peg$c35;
      peg$currPos += 8;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e35); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseIN() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 37;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 2) === peg$c36) {
      s1 = peg$c36;
      peg$currPos += 2;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e36); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseOUT() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 38;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 3) === peg$c37) {
      s1 = peg$c37;
      peg$currPos += 3;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e37); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseINOUT() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 39;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 5) === peg$c38) {
      s1 = peg$c38;
      peg$currPos += 5;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e38); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseUNIFORM() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 40;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 7) === peg$c39) {
      s1 = peg$c39;
      peg$currPos += 7;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e39); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsePATCH() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 41;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 5) === peg$c40) {
      s1 = peg$c40;
      peg$currPos += 5;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e40); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseSAMPLE() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 42;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 6) === peg$c41) {
      s1 = peg$c41;
      peg$currPos += 6;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e41); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseBUFFER() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 43;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 6) === peg$c42) {
      s1 = peg$c42;
      peg$currPos += 6;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e42); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseSHARED() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 44;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 6) === peg$c43) {
      s1 = peg$c43;
      peg$currPos += 6;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e43); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseCOHERENT() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 45;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 8) === peg$c44) {
      s1 = peg$c44;
      peg$currPos += 8;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e44); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseVOLATILE() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 46;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 8) === peg$c45) {
      s1 = peg$c45;
      peg$currPos += 8;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e45); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseRESTRICT() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 47;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 8) === peg$c46) {
      s1 = peg$c46;
      peg$currPos += 8;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e46); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseREADONLY() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 48;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 8) === peg$c47) {
      s1 = peg$c47;
      peg$currPos += 8;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e47); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseWRITEONLY() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 49;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 9) === peg$c48) {
      s1 = peg$c48;
      peg$currPos += 9;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e48); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseDVEC2() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 50;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 5) === peg$c49) {
      s1 = peg$c49;
      peg$currPos += 5;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e49); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseDVEC3() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 51;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 5) === peg$c50) {
      s1 = peg$c50;
      peg$currPos += 5;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e50); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseDVEC4() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 52;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 5) === peg$c51) {
      s1 = peg$c51;
      peg$currPos += 5;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e51); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseDMAT2() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 53;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 5) === peg$c52) {
      s1 = peg$c52;
      peg$currPos += 5;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e52); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseDMAT3() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 54;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 5) === peg$c53) {
      s1 = peg$c53;
      peg$currPos += 5;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e53); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseDMAT4() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 55;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 5) === peg$c54) {
      s1 = peg$c54;
      peg$currPos += 5;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e54); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseNOPERSPECTIVE() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 56;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 13) === peg$c55) {
      s1 = peg$c55;
      peg$currPos += 13;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e55); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseFLAT() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 57;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 4) === peg$c56) {
      s1 = peg$c56;
      peg$currPos += 4;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e56); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseSMOOTH() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 58;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 6) === peg$c57) {
      s1 = peg$c57;
      peg$currPos += 6;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e57); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseLAYOUT() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 59;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 6) === peg$c58) {
      s1 = peg$c58;
      peg$currPos += 6;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e58); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseMAT2X2() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 60;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 6) === peg$c59) {
      s1 = peg$c59;
      peg$currPos += 6;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e59); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseMAT2X3() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 61;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 6) === peg$c60) {
      s1 = peg$c60;
      peg$currPos += 6;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e60); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseMAT2X4() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 62;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 6) === peg$c61) {
      s1 = peg$c61;
      peg$currPos += 6;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e61); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseMAT3X2() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 63;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 6) === peg$c62) {
      s1 = peg$c62;
      peg$currPos += 6;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e62); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseMAT3X3() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 64;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 6) === peg$c63) {
      s1 = peg$c63;
      peg$currPos += 6;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e63); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseMAT3X4() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 65;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 6) === peg$c64) {
      s1 = peg$c64;
      peg$currPos += 6;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e64); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseMAT4X2() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 66;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 6) === peg$c65) {
      s1 = peg$c65;
      peg$currPos += 6;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e65); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseMAT4X3() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 67;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 6) === peg$c66) {
      s1 = peg$c66;
      peg$currPos += 6;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e66); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseMAT4X4() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 68;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 6) === peg$c67) {
      s1 = peg$c67;
      peg$currPos += 6;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e67); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseDMAT2X2() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 69;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 7) === peg$c68) {
      s1 = peg$c68;
      peg$currPos += 7;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e68); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseDMAT2X3() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 70;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 7) === peg$c69) {
      s1 = peg$c69;
      peg$currPos += 7;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e69); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseDMAT2X4() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 71;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 7) === peg$c70) {
      s1 = peg$c70;
      peg$currPos += 7;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e70); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseDMAT3X2() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 72;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 7) === peg$c71) {
      s1 = peg$c71;
      peg$currPos += 7;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e71); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseDMAT3X3() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 73;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 7) === peg$c72) {
      s1 = peg$c72;
      peg$currPos += 7;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e72); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseDMAT3X4() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 74;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 7) === peg$c73) {
      s1 = peg$c73;
      peg$currPos += 7;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e73); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseDMAT4X2() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 75;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 7) === peg$c74) {
      s1 = peg$c74;
      peg$currPos += 7;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e74); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseDMAT4X3() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 76;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 7) === peg$c75) {
      s1 = peg$c75;
      peg$currPos += 7;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e75); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseDMAT4X4() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 77;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 7) === peg$c76) {
      s1 = peg$c76;
      peg$currPos += 7;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e76); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseATOMIC_UINT() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 78;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 11) === peg$c77) {
      s1 = peg$c77;
      peg$currPos += 11;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e77); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseSAMPLER1D() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 79;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 9) === peg$c78) {
      s1 = peg$c78;
      peg$currPos += 9;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e78); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseSAMPLER2D() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 80;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 9) === peg$c79) {
      s1 = peg$c79;
      peg$currPos += 9;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e79); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseSAMPLER3D() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 81;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 9) === peg$c80) {
      s1 = peg$c80;
      peg$currPos += 9;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e80); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseSAMPLERCUBE() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 82;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 11) === peg$c81) {
      s1 = peg$c81;
      peg$currPos += 11;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e81); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseSAMPLER1DSHADOW() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 83;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 15) === peg$c82) {
      s1 = peg$c82;
      peg$currPos += 15;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e82); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseSAMPLER2DSHADOW() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 84;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 15) === peg$c83) {
      s1 = peg$c83;
      peg$currPos += 15;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e83); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseSAMPLERCUBESHADOW() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 85;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 17) === peg$c84) {
      s1 = peg$c84;
      peg$currPos += 17;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e84); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseSAMPLER1DARRAY() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 86;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 14) === peg$c85) {
      s1 = peg$c85;
      peg$currPos += 14;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e85); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseSAMPLER2DARRAY() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 87;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 14) === peg$c86) {
      s1 = peg$c86;
      peg$currPos += 14;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e86); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseSAMPLER1DARRAYSHADOW() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 88;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 20) === peg$c87) {
      s1 = peg$c87;
      peg$currPos += 20;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e87); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseSAMPLER2DARRAYSHADOW() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 89;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 20) === peg$c88) {
      s1 = peg$c88;
      peg$currPos += 20;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e88); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseISAMPLER1D() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 90;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 10) === peg$c89) {
      s1 = peg$c89;
      peg$currPos += 10;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e89); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseISAMPLER2D() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 91;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 10) === peg$c90) {
      s1 = peg$c90;
      peg$currPos += 10;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e90); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseISAMPLER3D() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 92;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 10) === peg$c91) {
      s1 = peg$c91;
      peg$currPos += 10;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e91); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseISAMPLERCUBE() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 93;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 12) === peg$c92) {
      s1 = peg$c92;
      peg$currPos += 12;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e92); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseISAMPLER1DARRAY() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 94;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 15) === peg$c93) {
      s1 = peg$c93;
      peg$currPos += 15;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e93); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseISAMPLER2DARRAY() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 95;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 15) === peg$c94) {
      s1 = peg$c94;
      peg$currPos += 15;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e94); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseUSAMPLER1D() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 96;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 10) === peg$c95) {
      s1 = peg$c95;
      peg$currPos += 10;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e95); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseUSAMPLER2D() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 97;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 10) === peg$c96) {
      s1 = peg$c96;
      peg$currPos += 10;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e96); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseUSAMPLER3D() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 98;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 10) === peg$c97) {
      s1 = peg$c97;
      peg$currPos += 10;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e97); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseUSAMPLERCUBE() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 99;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 12) === peg$c98) {
      s1 = peg$c98;
      peg$currPos += 12;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e98); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseUSAMPLER1DARRAY() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 100;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 15) === peg$c99) {
      s1 = peg$c99;
      peg$currPos += 15;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e99); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseUSAMPLER2DARRAY() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 101;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 15) === peg$c100) {
      s1 = peg$c100;
      peg$currPos += 15;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e100); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseSAMPLER2DRECT() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 102;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 13) === peg$c101) {
      s1 = peg$c101;
      peg$currPos += 13;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e101); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseSAMPLER2DRECTSHADOW() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 103;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 19) === peg$c102) {
      s1 = peg$c102;
      peg$currPos += 19;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e102); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseISAMPLER2DRECT() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 104;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 14) === peg$c103) {
      s1 = peg$c103;
      peg$currPos += 14;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e103); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseUSAMPLER2DRECT() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 105;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 14) === peg$c104) {
      s1 = peg$c104;
      peg$currPos += 14;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e104); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseSAMPLERBUFFER() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 106;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 13) === peg$c105) {
      s1 = peg$c105;
      peg$currPos += 13;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e105); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseISAMPLERBUFFER() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 107;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 14) === peg$c106) {
      s1 = peg$c106;
      peg$currPos += 14;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e106); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseUSAMPLERBUFFER() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 108;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 14) === peg$c107) {
      s1 = peg$c107;
      peg$currPos += 14;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e107); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseSAMPLERCUBEARRAY() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 109;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 16) === peg$c108) {
      s1 = peg$c108;
      peg$currPos += 16;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e108); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseSAMPLERCUBEARRAYSHADOW() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 110;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 22) === peg$c109) {
      s1 = peg$c109;
      peg$currPos += 22;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e109); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseISAMPLERCUBEARRAY() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 111;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 17) === peg$c110) {
      s1 = peg$c110;
      peg$currPos += 17;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e110); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseUSAMPLERCUBEARRAY() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 112;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 17) === peg$c111) {
      s1 = peg$c111;
      peg$currPos += 17;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e111); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseSAMPLER2DMS() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 113;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 11) === peg$c112) {
      s1 = peg$c112;
      peg$currPos += 11;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e112); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseISAMPLER2DMS() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 114;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 12) === peg$c113) {
      s1 = peg$c113;
      peg$currPos += 12;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e113); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseUSAMPLER2DMS() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 115;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 12) === peg$c114) {
      s1 = peg$c114;
      peg$currPos += 12;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e114); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseSAMPLER2DMSARRAY() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 116;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 16) === peg$c115) {
      s1 = peg$c115;
      peg$currPos += 16;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e115); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseISAMPLER2DMSARRAY() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 117;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 17) === peg$c116) {
      s1 = peg$c116;
      peg$currPos += 17;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e116); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseUSAMPLER2DMSARRAY() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 118;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 17) === peg$c117) {
      s1 = peg$c117;
      peg$currPos += 17;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e117); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseIMAGE1D() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 119;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 7) === peg$c118) {
      s1 = peg$c118;
      peg$currPos += 7;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e118); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseIIMAGE1D() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 120;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 8) === peg$c119) {
      s1 = peg$c119;
      peg$currPos += 8;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e119); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseUIMAGE1D() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 121;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 8) === peg$c120) {
      s1 = peg$c120;
      peg$currPos += 8;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e120); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseIMAGE2D() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 122;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 7) === peg$c121) {
      s1 = peg$c121;
      peg$currPos += 7;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e121); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseIIMAGE2D() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 123;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 8) === peg$c122) {
      s1 = peg$c122;
      peg$currPos += 8;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e122); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseUIMAGE2D() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 124;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 8) === peg$c123) {
      s1 = peg$c123;
      peg$currPos += 8;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e123); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseIMAGE3D() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 125;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 7) === peg$c124) {
      s1 = peg$c124;
      peg$currPos += 7;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e124); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseIIMAGE3D() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 126;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 8) === peg$c125) {
      s1 = peg$c125;
      peg$currPos += 8;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e125); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseUIMAGE3D() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 127;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 8) === peg$c126) {
      s1 = peg$c126;
      peg$currPos += 8;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e126); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseIMAGE2DRECT() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 128;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 11) === peg$c127) {
      s1 = peg$c127;
      peg$currPos += 11;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e127); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseIIMAGE2DRECT() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 129;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 12) === peg$c128) {
      s1 = peg$c128;
      peg$currPos += 12;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e128); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseUIMAGE2DRECT() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 130;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 12) === peg$c129) {
      s1 = peg$c129;
      peg$currPos += 12;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e129); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseIMAGECUBE() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 131;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 9) === peg$c130) {
      s1 = peg$c130;
      peg$currPos += 9;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e130); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseIIMAGECUBE() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 132;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 10) === peg$c131) {
      s1 = peg$c131;
      peg$currPos += 10;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e131); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseUIMAGECUBE() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 133;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 10) === peg$c132) {
      s1 = peg$c132;
      peg$currPos += 10;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e132); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseIMAGEBUFFER() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 134;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 11) === peg$c133) {
      s1 = peg$c133;
      peg$currPos += 11;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e133); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseIIMAGEBUFFER() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 135;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 12) === peg$c134) {
      s1 = peg$c134;
      peg$currPos += 12;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e134); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseUIMAGEBUFFER() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 136;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 12) === peg$c135) {
      s1 = peg$c135;
      peg$currPos += 12;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e135); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseIMAGE1DARRAY() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 137;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 12) === peg$c136) {
      s1 = peg$c136;
      peg$currPos += 12;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e136); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseIIMAGE1DARRAY() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 138;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 13) === peg$c137) {
      s1 = peg$c137;
      peg$currPos += 13;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e137); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseUIMAGE1DARRAY() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 139;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 13) === peg$c138) {
      s1 = peg$c138;
      peg$currPos += 13;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e138); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseIMAGE2DARRAY() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 140;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 12) === peg$c139) {
      s1 = peg$c139;
      peg$currPos += 12;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e139); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseIIMAGE2DARRAY() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 141;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 13) === peg$c140) {
      s1 = peg$c140;
      peg$currPos += 13;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e140); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseUIMAGE2DARRAY() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 142;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 13) === peg$c141) {
      s1 = peg$c141;
      peg$currPos += 13;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e141); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseIMAGECUBEARRAY() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 143;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 14) === peg$c142) {
      s1 = peg$c142;
      peg$currPos += 14;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e142); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseIIMAGECUBEARRAY() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 144;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 15) === peg$c143) {
      s1 = peg$c143;
      peg$currPos += 15;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e143); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseUIMAGECUBEARRAY() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 145;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 15) === peg$c144) {
      s1 = peg$c144;
      peg$currPos += 15;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e144); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseIMAGE2DMS() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 146;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 9) === peg$c145) {
      s1 = peg$c145;
      peg$currPos += 9;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e145); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseIIMAGE2DMS() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 147;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 10) === peg$c146) {
      s1 = peg$c146;
      peg$currPos += 10;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e146); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseUIMAGE2DMS() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 148;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 10) === peg$c147) {
      s1 = peg$c147;
      peg$currPos += 10;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e147); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseIMAGE2DMSARRAY() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 149;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 13) === peg$c148) {
      s1 = peg$c148;
      peg$currPos += 13;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e148); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseIIMAGE2DMSARRAY() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 150;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 15) === peg$c149) {
      s1 = peg$c149;
      peg$currPos += 15;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e149); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseUIMAGE2DMSARRAY() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 151;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 15) === peg$c150) {
      s1 = peg$c150;
      peg$currPos += 15;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e150); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseSTRUCT() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 152;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 6) === peg$c151) {
      s1 = peg$c151;
      peg$currPos += 6;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e151); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseVOID() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 153;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 4) === peg$c152) {
      s1 = peg$c152;
      peg$currPos += 4;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e152); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseWHILE() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 154;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 5) === peg$c153) {
      s1 = peg$c153;
      peg$currPos += 5;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e153); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseINVARIANT() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 155;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 9) === peg$c154) {
      s1 = peg$c154;
      peg$currPos += 9;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e154); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsePRECISE() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 156;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 7) === peg$c155) {
      s1 = peg$c155;
      peg$currPos += 7;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e155); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseHIGH_PRECISION() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 157;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 5) === peg$c156) {
      s1 = peg$c156;
      peg$currPos += 5;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e156); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseMEDIUM_PRECISION() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 158;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 7) === peg$c157) {
      s1 = peg$c157;
      peg$currPos += 7;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e157); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseLOW_PRECISION() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 159;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 4) === peg$c158) {
      s1 = peg$c158;
      peg$currPos += 4;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e158); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsePRECISION() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 160;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 9) === peg$c159) {
      s1 = peg$c159;
      peg$currPos += 9;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e159); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseterminal();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f1(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseFLOATCONSTANT() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 161;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$parsefloating_constant();
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f2(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseDOUBLECONSTANT() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 162;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$parsefloating_constant();
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f3(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseINTCONSTANT() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 163;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$parseinteger_constant();
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f4(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseUINTCONSTANT() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 164;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$parseinteger_constant();
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f5(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseBOOLCONSTANT() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 165;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 4) === peg$c160) {
      s1 = peg$c160;
      peg$currPos += 4;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e160); }
    }
    if (s1 === peg$FAILED) {
      if (input.substr(peg$currPos, 5) === peg$c161) {
        s1 = peg$c161;
        peg$currPos += 5;
      } else {
        s1 = peg$FAILED;
        if (peg$silentFails === 0) { peg$fail(peg$e161); }
      }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f6(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsekeyword() {
    var s0, s1;

    var key = peg$currPos * 305 + 166;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    peg$silentFails++;
    s0 = peg$parseATTRIBUTE();
    if (s0 === peg$FAILED) {
      s0 = peg$parseVARYING();
      if (s0 === peg$FAILED) {
        s0 = peg$parseCONST();
        if (s0 === peg$FAILED) {
          s0 = peg$parseBOOL();
          if (s0 === peg$FAILED) {
            s0 = peg$parseFLOAT();
            if (s0 === peg$FAILED) {
              s0 = peg$parseDOUBLE();
              if (s0 === peg$FAILED) {
                s0 = peg$parseINT();
                if (s0 === peg$FAILED) {
                  s0 = peg$parseUINT();
                  if (s0 === peg$FAILED) {
                    s0 = peg$parseBREAK();
                    if (s0 === peg$FAILED) {
                      s0 = peg$parseCONTINUE();
                      if (s0 === peg$FAILED) {
                        s0 = peg$parseDO();
                        if (s0 === peg$FAILED) {
                          s0 = peg$parseELSE();
                          if (s0 === peg$FAILED) {
                            s0 = peg$parseFOR();
                            if (s0 === peg$FAILED) {
                              s0 = peg$parseIF();
                              if (s0 === peg$FAILED) {
                                s0 = peg$parseDISCARD();
                                if (s0 === peg$FAILED) {
                                  s0 = peg$parseRETURN();
                                  if (s0 === peg$FAILED) {
                                    s0 = peg$parseSWITCH();
                                    if (s0 === peg$FAILED) {
                                      s0 = peg$parseCASE();
                                      if (s0 === peg$FAILED) {
                                        s0 = peg$parseDEFAULT();
                                        if (s0 === peg$FAILED) {
                                          s0 = peg$parseSUBROUTINE();
                                          if (s0 === peg$FAILED) {
                                            s0 = peg$parseBVEC2();
                                            if (s0 === peg$FAILED) {
                                              s0 = peg$parseBVEC3();
                                              if (s0 === peg$FAILED) {
                                                s0 = peg$parseBVEC4();
                                                if (s0 === peg$FAILED) {
                                                  s0 = peg$parseIVEC2();
                                                  if (s0 === peg$FAILED) {
                                                    s0 = peg$parseIVEC3();
                                                    if (s0 === peg$FAILED) {
                                                      s0 = peg$parseIVEC4();
                                                      if (s0 === peg$FAILED) {
                                                        s0 = peg$parseUVEC2();
                                                        if (s0 === peg$FAILED) {
                                                          s0 = peg$parseUVEC3();
                                                          if (s0 === peg$FAILED) {
                                                            s0 = peg$parseUVEC4();
                                                            if (s0 === peg$FAILED) {
                                                              s0 = peg$parseVEC2();
                                                              if (s0 === peg$FAILED) {
                                                                s0 = peg$parseVEC3();
                                                                if (s0 === peg$FAILED) {
                                                                  s0 = peg$parseVEC4();
                                                                  if (s0 === peg$FAILED) {
                                                                    s0 = peg$parseMAT2();
                                                                    if (s0 === peg$FAILED) {
                                                                      s0 = peg$parseMAT3();
                                                                      if (s0 === peg$FAILED) {
                                                                        s0 = peg$parseMAT4();
                                                                        if (s0 === peg$FAILED) {
                                                                          s0 = peg$parseCENTROID();
                                                                          if (s0 === peg$FAILED) {
                                                                            s0 = peg$parseIN();
                                                                            if (s0 === peg$FAILED) {
                                                                              s0 = peg$parseOUT();
                                                                              if (s0 === peg$FAILED) {
                                                                                s0 = peg$parseINOUT();
                                                                                if (s0 === peg$FAILED) {
                                                                                  s0 = peg$parseUNIFORM();
                                                                                  if (s0 === peg$FAILED) {
                                                                                    s0 = peg$parsePATCH();
                                                                                    if (s0 === peg$FAILED) {
                                                                                      s0 = peg$parseSAMPLE();
                                                                                      if (s0 === peg$FAILED) {
                                                                                        s0 = peg$parseBUFFER();
                                                                                        if (s0 === peg$FAILED) {
                                                                                          s0 = peg$parseSHARED();
                                                                                          if (s0 === peg$FAILED) {
                                                                                            s0 = peg$parseCOHERENT();
                                                                                            if (s0 === peg$FAILED) {
                                                                                              s0 = peg$parseVOLATILE();
                                                                                              if (s0 === peg$FAILED) {
                                                                                                s0 = peg$parseRESTRICT();
                                                                                                if (s0 === peg$FAILED) {
                                                                                                  s0 = peg$parseREADONLY();
                                                                                                  if (s0 === peg$FAILED) {
                                                                                                    s0 = peg$parseWRITEONLY();
                                                                                                    if (s0 === peg$FAILED) {
                                                                                                      s0 = peg$parseDVEC2();
                                                                                                      if (s0 === peg$FAILED) {
                                                                                                        s0 = peg$parseDVEC3();
                                                                                                        if (s0 === peg$FAILED) {
                                                                                                          s0 = peg$parseDVEC4();
                                                                                                          if (s0 === peg$FAILED) {
                                                                                                            s0 = peg$parseDMAT2();
                                                                                                            if (s0 === peg$FAILED) {
                                                                                                              s0 = peg$parseDMAT3();
                                                                                                              if (s0 === peg$FAILED) {
                                                                                                                s0 = peg$parseDMAT4();
                                                                                                                if (s0 === peg$FAILED) {
                                                                                                                  s0 = peg$parseNOPERSPECTIVE();
                                                                                                                  if (s0 === peg$FAILED) {
                                                                                                                    s0 = peg$parseFLAT();
                                                                                                                    if (s0 === peg$FAILED) {
                                                                                                                      s0 = peg$parseSMOOTH();
                                                                                                                      if (s0 === peg$FAILED) {
                                                                                                                        s0 = peg$parseLAYOUT();
                                                                                                                        if (s0 === peg$FAILED) {
                                                                                                                          s0 = peg$parseMAT2X2();
                                                                                                                          if (s0 === peg$FAILED) {
                                                                                                                            s0 = peg$parseMAT2X3();
                                                                                                                            if (s0 === peg$FAILED) {
                                                                                                                              s0 = peg$parseMAT2X4();
                                                                                                                              if (s0 === peg$FAILED) {
                                                                                                                                s0 = peg$parseMAT3X2();
                                                                                                                                if (s0 === peg$FAILED) {
                                                                                                                                  s0 = peg$parseMAT3X3();
                                                                                                                                  if (s0 === peg$FAILED) {
                                                                                                                                    s0 = peg$parseMAT3X4();
                                                                                                                                    if (s0 === peg$FAILED) {
                                                                                                                                      s0 = peg$parseMAT4X2();
                                                                                                                                      if (s0 === peg$FAILED) {
                                                                                                                                        s0 = peg$parseMAT4X3();
                                                                                                                                        if (s0 === peg$FAILED) {
                                                                                                                                          s0 = peg$parseMAT4X4();
                                                                                                                                          if (s0 === peg$FAILED) {
                                                                                                                                            s0 = peg$parseDMAT2X2();
                                                                                                                                            if (s0 === peg$FAILED) {
                                                                                                                                              s0 = peg$parseDMAT2X3();
                                                                                                                                              if (s0 === peg$FAILED) {
                                                                                                                                                s0 = peg$parseDMAT2X4();
                                                                                                                                                if (s0 === peg$FAILED) {
                                                                                                                                                  s0 = peg$parseDMAT3X2();
                                                                                                                                                  if (s0 === peg$FAILED) {
                                                                                                                                                    s0 = peg$parseDMAT3X3();
                                                                                                                                                    if (s0 === peg$FAILED) {
                                                                                                                                                      s0 = peg$parseDMAT3X4();
                                                                                                                                                      if (s0 === peg$FAILED) {
                                                                                                                                                        s0 = peg$parseDMAT4X2();
                                                                                                                                                        if (s0 === peg$FAILED) {
                                                                                                                                                          s0 = peg$parseDMAT4X3();
                                                                                                                                                          if (s0 === peg$FAILED) {
                                                                                                                                                            s0 = peg$parseDMAT4X4();
                                                                                                                                                            if (s0 === peg$FAILED) {
                                                                                                                                                              s0 = peg$parseATOMIC_UINT();
                                                                                                                                                              if (s0 === peg$FAILED) {
                                                                                                                                                                s0 = peg$parseSAMPLER1D();
                                                                                                                                                                if (s0 === peg$FAILED) {
                                                                                                                                                                  s0 = peg$parseSAMPLER2D();
                                                                                                                                                                  if (s0 === peg$FAILED) {
                                                                                                                                                                    s0 = peg$parseSAMPLER3D();
                                                                                                                                                                    if (s0 === peg$FAILED) {
                                                                                                                                                                      s0 = peg$parseSAMPLERCUBE();
                                                                                                                                                                      if (s0 === peg$FAILED) {
                                                                                                                                                                        s0 = peg$parseSAMPLER1DSHADOW();
                                                                                                                                                                        if (s0 === peg$FAILED) {
                                                                                                                                                                          s0 = peg$parseSAMPLER2DSHADOW();
                                                                                                                                                                          if (s0 === peg$FAILED) {
                                                                                                                                                                            s0 = peg$parseSAMPLERCUBESHADOW();
                                                                                                                                                                            if (s0 === peg$FAILED) {
                                                                                                                                                                              s0 = peg$parseSAMPLER1DARRAY();
                                                                                                                                                                              if (s0 === peg$FAILED) {
                                                                                                                                                                                s0 = peg$parseSAMPLER2DARRAY();
                                                                                                                                                                                if (s0 === peg$FAILED) {
                                                                                                                                                                                  s0 = peg$parseSAMPLER1DARRAYSHADOW();
                                                                                                                                                                                  if (s0 === peg$FAILED) {
                                                                                                                                                                                    s0 = peg$parseSAMPLER2DARRAYSHADOW();
                                                                                                                                                                                    if (s0 === peg$FAILED) {
                                                                                                                                                                                      s0 = peg$parseISAMPLER1D();
                                                                                                                                                                                      if (s0 === peg$FAILED) {
                                                                                                                                                                                        s0 = peg$parseISAMPLER2D();
                                                                                                                                                                                        if (s0 === peg$FAILED) {
                                                                                                                                                                                          s0 = peg$parseISAMPLER3D();
                                                                                                                                                                                          if (s0 === peg$FAILED) {
                                                                                                                                                                                            s0 = peg$parseISAMPLERCUBE();
                                                                                                                                                                                            if (s0 === peg$FAILED) {
                                                                                                                                                                                              s0 = peg$parseISAMPLER1DARRAY();
                                                                                                                                                                                              if (s0 === peg$FAILED) {
                                                                                                                                                                                                s0 = peg$parseISAMPLER2DARRAY();
                                                                                                                                                                                                if (s0 === peg$FAILED) {
                                                                                                                                                                                                  s0 = peg$parseUSAMPLER1D();
                                                                                                                                                                                                  if (s0 === peg$FAILED) {
                                                                                                                                                                                                    s0 = peg$parseUSAMPLER2D();
                                                                                                                                                                                                    if (s0 === peg$FAILED) {
                                                                                                                                                                                                      s0 = peg$parseUSAMPLER3D();
                                                                                                                                                                                                      if (s0 === peg$FAILED) {
                                                                                                                                                                                                        s0 = peg$parseUSAMPLERCUBE();
                                                                                                                                                                                                        if (s0 === peg$FAILED) {
                                                                                                                                                                                                          s0 = peg$parseUSAMPLER1DARRAY();
                                                                                                                                                                                                          if (s0 === peg$FAILED) {
                                                                                                                                                                                                            s0 = peg$parseUSAMPLER2DARRAY();
                                                                                                                                                                                                            if (s0 === peg$FAILED) {
                                                                                                                                                                                                              s0 = peg$parseSAMPLER2DRECT();
                                                                                                                                                                                                              if (s0 === peg$FAILED) {
                                                                                                                                                                                                                s0 = peg$parseSAMPLER2DRECTSHADOW();
                                                                                                                                                                                                                if (s0 === peg$FAILED) {
                                                                                                                                                                                                                  s0 = peg$parseISAMPLER2DRECT();
                                                                                                                                                                                                                  if (s0 === peg$FAILED) {
                                                                                                                                                                                                                    s0 = peg$parseUSAMPLER2DRECT();
                                                                                                                                                                                                                    if (s0 === peg$FAILED) {
                                                                                                                                                                                                                      s0 = peg$parseSAMPLERBUFFER();
                                                                                                                                                                                                                      if (s0 === peg$FAILED) {
                                                                                                                                                                                                                        s0 = peg$parseISAMPLERBUFFER();
                                                                                                                                                                                                                        if (s0 === peg$FAILED) {
                                                                                                                                                                                                                          s0 = peg$parseUSAMPLERBUFFER();
                                                                                                                                                                                                                          if (s0 === peg$FAILED) {
                                                                                                                                                                                                                            s0 = peg$parseSAMPLERCUBEARRAY();
                                                                                                                                                                                                                            if (s0 === peg$FAILED) {
                                                                                                                                                                                                                              s0 = peg$parseSAMPLERCUBEARRAYSHADOW();
                                                                                                                                                                                                                              if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                s0 = peg$parseISAMPLERCUBEARRAY();
                                                                                                                                                                                                                                if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                  s0 = peg$parseUSAMPLERCUBEARRAY();
                                                                                                                                                                                                                                  if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                    s0 = peg$parseSAMPLER2DMS();
                                                                                                                                                                                                                                    if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                      s0 = peg$parseISAMPLER2DMS();
                                                                                                                                                                                                                                      if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                        s0 = peg$parseUSAMPLER2DMS();
                                                                                                                                                                                                                                        if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                          s0 = peg$parseSAMPLER2DMSARRAY();
                                                                                                                                                                                                                                          if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                            s0 = peg$parseISAMPLER2DMSARRAY();
                                                                                                                                                                                                                                            if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                              s0 = peg$parseUSAMPLER2DMSARRAY();
                                                                                                                                                                                                                                              if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                                s0 = peg$parseIMAGE1D();
                                                                                                                                                                                                                                                if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                                  s0 = peg$parseIIMAGE1D();
                                                                                                                                                                                                                                                  if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                                    s0 = peg$parseUIMAGE1D();
                                                                                                                                                                                                                                                    if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                                      s0 = peg$parseIMAGE2D();
                                                                                                                                                                                                                                                      if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                                        s0 = peg$parseIIMAGE2D();
                                                                                                                                                                                                                                                        if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                                          s0 = peg$parseUIMAGE2D();
                                                                                                                                                                                                                                                          if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                                            s0 = peg$parseIMAGE3D();
                                                                                                                                                                                                                                                            if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                                              s0 = peg$parseIIMAGE3D();
                                                                                                                                                                                                                                                              if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                                                s0 = peg$parseUIMAGE3D();
                                                                                                                                                                                                                                                                if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                                                  s0 = peg$parseIMAGE2DRECT();
                                                                                                                                                                                                                                                                  if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                                                    s0 = peg$parseIIMAGE2DRECT();
                                                                                                                                                                                                                                                                    if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                                                      s0 = peg$parseUIMAGE2DRECT();
                                                                                                                                                                                                                                                                      if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                                                        s0 = peg$parseIMAGECUBE();
                                                                                                                                                                                                                                                                        if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                                                          s0 = peg$parseIIMAGECUBE();
                                                                                                                                                                                                                                                                          if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                                                            s0 = peg$parseUIMAGECUBE();
                                                                                                                                                                                                                                                                            if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                                                              s0 = peg$parseIMAGEBUFFER();
                                                                                                                                                                                                                                                                              if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                                                                s0 = peg$parseIIMAGEBUFFER();
                                                                                                                                                                                                                                                                                if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                                                                  s0 = peg$parseUIMAGEBUFFER();
                                                                                                                                                                                                                                                                                  if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                                                                    s0 = peg$parseIMAGE1DARRAY();
                                                                                                                                                                                                                                                                                    if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                                                                      s0 = peg$parseIIMAGE1DARRAY();
                                                                                                                                                                                                                                                                                      if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                                                                        s0 = peg$parseUIMAGE1DARRAY();
                                                                                                                                                                                                                                                                                        if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                                                                          s0 = peg$parseIMAGE2DARRAY();
                                                                                                                                                                                                                                                                                          if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                                                                            s0 = peg$parseIIMAGE2DARRAY();
                                                                                                                                                                                                                                                                                            if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                                                                              s0 = peg$parseUIMAGE2DARRAY();
                                                                                                                                                                                                                                                                                              if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                                                                                s0 = peg$parseIMAGECUBEARRAY();
                                                                                                                                                                                                                                                                                                if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                                                                                  s0 = peg$parseIIMAGECUBEARRAY();
                                                                                                                                                                                                                                                                                                  if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                                                                                    s0 = peg$parseUIMAGECUBEARRAY();
                                                                                                                                                                                                                                                                                                    if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                                                                                      s0 = peg$parseIMAGE2DMS();
                                                                                                                                                                                                                                                                                                      if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                                                                                        s0 = peg$parseIIMAGE2DMS();
                                                                                                                                                                                                                                                                                                        if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                                                                                          s0 = peg$parseUIMAGE2DMS();
                                                                                                                                                                                                                                                                                                          if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                                                                                            s0 = peg$parseIMAGE2DMSARRAY();
                                                                                                                                                                                                                                                                                                            if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                                                                                              s0 = peg$parseIIMAGE2DMSARRAY();
                                                                                                                                                                                                                                                                                                              if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                                                                                                s0 = peg$parseUIMAGE2DMSARRAY();
                                                                                                                                                                                                                                                                                                                if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                                                                                                  s0 = peg$parseSTRUCT();
                                                                                                                                                                                                                                                                                                                  if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                                                                                                    s0 = peg$parseVOID();
                                                                                                                                                                                                                                                                                                                    if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                                                                                                      s0 = peg$parseWHILE();
                                                                                                                                                                                                                                                                                                                      if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                                                                                                        s0 = peg$parseINVARIANT();
                                                                                                                                                                                                                                                                                                                        if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                                                                                                          s0 = peg$parsePRECISE();
                                                                                                                                                                                                                                                                                                                          if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                                                                                                            s0 = peg$parseHIGH_PRECISION();
                                                                                                                                                                                                                                                                                                                            if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                                                                                                              s0 = peg$parseMEDIUM_PRECISION();
                                                                                                                                                                                                                                                                                                                              if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                                                                                                                s0 = peg$parseLOW_PRECISION();
                                                                                                                                                                                                                                                                                                                                if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                                                                                                                  s0 = peg$parsePRECISION();
                                                                                                                                                                                                                                                                                                                                }
                                                                                                                                                                                                                                                                                                                              }
                                                                                                                                                                                                                                                                                                                            }
                                                                                                                                                                                                                                                                                                                          }
                                                                                                                                                                                                                                                                                                                        }
                                                                                                                                                                                                                                                                                                                      }
                                                                                                                                                                                                                                                                                                                    }
                                                                                                                                                                                                                                                                                                                  }
                                                                                                                                                                                                                                                                                                                }
                                                                                                                                                                                                                                                                                                              }
                                                                                                                                                                                                                                                                                                            }
                                                                                                                                                                                                                                                                                                          }
                                                                                                                                                                                                                                                                                                        }
                                                                                                                                                                                                                                                                                                      }
                                                                                                                                                                                                                                                                                                    }
                                                                                                                                                                                                                                                                                                  }
                                                                                                                                                                                                                                                                                                }
                                                                                                                                                                                                                                                                                              }
                                                                                                                                                                                                                                                                                            }
                                                                                                                                                                                                                                                                                          }
                                                                                                                                                                                                                                                                                        }
                                                                                                                                                                                                                                                                                      }
                                                                                                                                                                                                                                                                                    }
                                                                                                                                                                                                                                                                                  }
                                                                                                                                                                                                                                                                                }
                                                                                                                                                                                                                                                                              }
                                                                                                                                                                                                                                                                            }
                                                                                                                                                                                                                                                                          }
                                                                                                                                                                                                                                                                        }
                                                                                                                                                                                                                                                                      }
                                                                                                                                                                                                                                                                    }
                                                                                                                                                                                                                                                                  }
                                                                                                                                                                                                                                                                }
                                                                                                                                                                                                                                                              }
                                                                                                                                                                                                                                                            }
                                                                                                                                                                                                                                                          }
                                                                                                                                                                                                                                                        }
                                                                                                                                                                                                                                                      }
                                                                                                                                                                                                                                                    }
                                                                                                                                                                                                                                                  }
                                                                                                                                                                                                                                                }
                                                                                                                                                                                                                                              }
                                                                                                                                                                                                                                            }
                                                                                                                                                                                                                                          }
                                                                                                                                                                                                                                        }
                                                                                                                                                                                                                                      }
                                                                                                                                                                                                                                    }
                                                                                                                                                                                                                                  }
                                                                                                                                                                                                                                }
                                                                                                                                                                                                                              }
                                                                                                                                                                                                                            }
                                                                                                                                                                                                                          }
                                                                                                                                                                                                                        }
                                                                                                                                                                                                                      }
                                                                                                                                                                                                                    }
                                                                                                                                                                                                                  }
                                                                                                                                                                                                                }
                                                                                                                                                                                                              }
                                                                                                                                                                                                            }
                                                                                                                                                                                                          }
                                                                                                                                                                                                        }
                                                                                                                                                                                                      }
                                                                                                                                                                                                    }
                                                                                                                                                                                                  }
                                                                                                                                                                                                }
                                                                                                                                                                                              }
                                                                                                                                                                                            }
                                                                                                                                                                                          }
                                                                                                                                                                                        }
                                                                                                                                                                                      }
                                                                                                                                                                                    }
                                                                                                                                                                                  }
                                                                                                                                                                                }
                                                                                                                                                                              }
                                                                                                                                                                            }
                                                                                                                                                                          }
                                                                                                                                                                        }
                                                                                                                                                                      }
                                                                                                                                                                    }
                                                                                                                                                                  }
                                                                                                                                                                }
                                                                                                                                                              }
                                                                                                                                                            }
                                                                                                                                                          }
                                                                                                                                                        }
                                                                                                                                                      }
                                                                                                                                                    }
                                                                                                                                                  }
                                                                                                                                                }
                                                                                                                                              }
                                                                                                                                            }
                                                                                                                                          }
                                                                                                                                        }
                                                                                                                                      }
                                                                                                                                    }
                                                                                                                                  }
                                                                                                                                }
                                                                                                                              }
                                                                                                                            }
                                                                                                                          }
                                                                                                                        }
                                                                                                                      }
                                                                                                                    }
                                                                                                                  }
                                                                                                                }
                                                                                                              }
                                                                                                            }
                                                                                                          }
                                                                                                        }
                                                                                                      }
                                                                                                    }
                                                                                                  }
                                                                                                }
                                                                                              }
                                                                                            }
                                                                                          }
                                                                                        }
                                                                                      }
                                                                                    }
                                                                                  }
                                                                                }
                                                                              }
                                                                            }
                                                                          }
                                                                        }
                                                                      }
                                                                    }
                                                                  }
                                                                }
                                                              }
                                                            }
                                                          }
                                                        }
                                                      }
                                                    }
                                                  }
                                                }
                                              }
                                            }
                                          }
                                        }
                                      }
                                    }
                                  }
                                }
                              }
                            }
                          }
                        }
                      }
                    }
                  }
                }
              }
            }
          }
        }
      }
    }
    peg$silentFails--;
    if (s0 === peg$FAILED) {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e162); }
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseLEFT_OP() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 167;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 2) === peg$c162) {
      s1 = peg$c162;
      peg$currPos += 2;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e163); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f7(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseRIGHT_OP() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 168;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 2) === peg$c163) {
      s1 = peg$c163;
      peg$currPos += 2;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e164); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f7(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseINC_OP() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 169;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 2) === peg$c164) {
      s1 = peg$c164;
      peg$currPos += 2;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e165); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f7(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseDEC_OP() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 170;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 2) === peg$c165) {
      s1 = peg$c165;
      peg$currPos += 2;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e166); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f7(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseLE_OP() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 171;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 2) === peg$c166) {
      s1 = peg$c166;
      peg$currPos += 2;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e167); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f7(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseGE_OP() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 172;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 2) === peg$c167) {
      s1 = peg$c167;
      peg$currPos += 2;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e168); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f7(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseEQ_OP() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 173;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 2) === peg$c168) {
      s1 = peg$c168;
      peg$currPos += 2;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e169); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f7(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseNE_OP() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 174;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 2) === peg$c169) {
      s1 = peg$c169;
      peg$currPos += 2;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e170); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f7(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseAND_OP() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 175;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 2) === peg$c170) {
      s1 = peg$c170;
      peg$currPos += 2;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e171); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f7(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseOR_OP() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 176;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 2) === peg$c171) {
      s1 = peg$c171;
      peg$currPos += 2;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e172); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f7(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseXOR_OP() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 177;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 2) === peg$c172) {
      s1 = peg$c172;
      peg$currPos += 2;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e173); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f7(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseMUL_ASSIGN() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 178;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 2) === peg$c173) {
      s1 = peg$c173;
      peg$currPos += 2;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e174); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f7(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseDIV_ASSIGN() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 179;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 2) === peg$c174) {
      s1 = peg$c174;
      peg$currPos += 2;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e175); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f7(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseADD_ASSIGN() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 180;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 2) === peg$c175) {
      s1 = peg$c175;
      peg$currPos += 2;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e176); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f7(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseMOD_ASSIGN() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 181;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 2) === peg$c176) {
      s1 = peg$c176;
      peg$currPos += 2;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e177); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f7(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseLEFT_ASSIGN() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 182;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 3) === peg$c177) {
      s1 = peg$c177;
      peg$currPos += 3;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e178); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f7(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseRIGHT_ASSIGN() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 183;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 3) === peg$c178) {
      s1 = peg$c178;
      peg$currPos += 3;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e179); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f7(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseAND_ASSIGN() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 184;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 2) === peg$c179) {
      s1 = peg$c179;
      peg$currPos += 2;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e180); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f7(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseXOR_ASSIGN() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 185;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 2) === peg$c180) {
      s1 = peg$c180;
      peg$currPos += 2;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e181); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f7(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseOR_ASSIGN() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 186;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 2) === peg$c181) {
      s1 = peg$c181;
      peg$currPos += 2;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e182); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f7(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseSUB_ASSIGN() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 187;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.substr(peg$currPos, 2) === peg$c182) {
      s1 = peg$c182;
      peg$currPos += 2;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e183); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f7(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseLEFT_PAREN() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 188;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.charCodeAt(peg$currPos) === 40) {
      s1 = peg$c183;
      peg$currPos++;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e184); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f7(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseRIGHT_PAREN() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 189;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.charCodeAt(peg$currPos) === 41) {
      s1 = peg$c184;
      peg$currPos++;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e185); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f7(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseLEFT_BRACKET() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 190;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.charCodeAt(peg$currPos) === 91) {
      s1 = peg$c185;
      peg$currPos++;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e186); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f7(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseRIGHT_BRACKET() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 191;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.charCodeAt(peg$currPos) === 93) {
      s1 = peg$c186;
      peg$currPos++;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e187); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f7(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseLEFT_BRACE() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 192;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.charCodeAt(peg$currPos) === 123) {
      s1 = peg$c187;
      peg$currPos++;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e188); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f7(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseRIGHT_BRACE() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 193;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.charCodeAt(peg$currPos) === 125) {
      s1 = peg$c188;
      peg$currPos++;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e189); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f7(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseDOT() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 194;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.charCodeAt(peg$currPos) === 46) {
      s1 = peg$c189;
      peg$currPos++;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e190); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f7(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseCOMMA() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 195;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.charCodeAt(peg$currPos) === 44) {
      s1 = peg$c190;
      peg$currPos++;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e191); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f7(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseCOLON() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 196;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.charCodeAt(peg$currPos) === 58) {
      s1 = peg$c191;
      peg$currPos++;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e192); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f7(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseEQUAL() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 197;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.charCodeAt(peg$currPos) === 61) {
      s1 = peg$c192;
      peg$currPos++;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e193); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f7(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseSEMICOLON() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 198;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.charCodeAt(peg$currPos) === 59) {
      s1 = peg$c193;
      peg$currPos++;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e194); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f7(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseBANG() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 199;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.charCodeAt(peg$currPos) === 33) {
      s1 = peg$c194;
      peg$currPos++;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e195); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f7(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseDASH() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 200;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.charCodeAt(peg$currPos) === 45) {
      s1 = peg$c195;
      peg$currPos++;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e196); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f7(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseTILDE() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 201;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.charCodeAt(peg$currPos) === 126) {
      s1 = peg$c196;
      peg$currPos++;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e197); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f7(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsePLUS() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 202;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.charCodeAt(peg$currPos) === 43) {
      s1 = peg$c197;
      peg$currPos++;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e198); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f7(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseSTAR() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 203;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.charCodeAt(peg$currPos) === 42) {
      s1 = peg$c198;
      peg$currPos++;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e199); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f7(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseSLASH() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 204;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.charCodeAt(peg$currPos) === 47) {
      s1 = peg$c199;
      peg$currPos++;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e200); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f7(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsePERCENT() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 205;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.charCodeAt(peg$currPos) === 37) {
      s1 = peg$c200;
      peg$currPos++;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e201); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f7(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseLEFT_ANGLE() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 206;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.charCodeAt(peg$currPos) === 60) {
      s1 = peg$c201;
      peg$currPos++;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e202); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f7(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseRIGHT_ANGLE() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 207;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.charCodeAt(peg$currPos) === 62) {
      s1 = peg$c202;
      peg$currPos++;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e203); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f7(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseVERTICAL_BAR() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 208;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.charCodeAt(peg$currPos) === 124) {
      s1 = peg$c203;
      peg$currPos++;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e204); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f7(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseCARET() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 209;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.charCodeAt(peg$currPos) === 94) {
      s1 = peg$c204;
      peg$currPos++;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e205); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f7(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseAMPERSAND() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 210;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.charCodeAt(peg$currPos) === 38) {
      s1 = peg$c205;
      peg$currPos++;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e206); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f7(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseQUESTION() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 211;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.charCodeAt(peg$currPos) === 63) {
      s1 = peg$c206;
      peg$currPos++;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e207); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f7(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseIDENTIFIER() {
    var s0, s1, s2, s3, s4, s5, s6;

    var key = peg$currPos * 305 + 212;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$currPos;
    peg$silentFails++;
    s2 = peg$parsekeyword();
    peg$silentFails--;
    if (s2 === peg$FAILED) {
      s1 = undefined;
    } else {
      peg$currPos = s1;
      s1 = peg$FAILED;
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$currPos;
      s3 = peg$currPos;
      if (peg$r0.test(input.charAt(peg$currPos))) {
        s4 = input.charAt(peg$currPos);
        peg$currPos++;
      } else {
        s4 = peg$FAILED;
        if (peg$silentFails === 0) { peg$fail(peg$e208); }
      }
      if (s4 !== peg$FAILED) {
        s5 = [];
        if (peg$r1.test(input.charAt(peg$currPos))) {
          s6 = input.charAt(peg$currPos);
          peg$currPos++;
        } else {
          s6 = peg$FAILED;
          if (peg$silentFails === 0) { peg$fail(peg$e209); }
        }
        while (s6 !== peg$FAILED) {
          s5.push(s6);
          if (peg$r1.test(input.charAt(peg$currPos))) {
            s6 = input.charAt(peg$currPos);
            peg$currPos++;
          } else {
            s6 = peg$FAILED;
            if (peg$silentFails === 0) { peg$fail(peg$e209); }
          }
        }
        s4 = [s4, s5];
        s3 = s4;
      } else {
        peg$currPos = s3;
        s3 = peg$FAILED;
      }
      if (s3 !== peg$FAILED) {
        s2 = input.substring(s2, peg$currPos);
      } else {
        s2 = s3;
      }
      if (s2 !== peg$FAILED) {
        s3 = peg$parse_();
        peg$savedPos = s0;
        s0 = peg$f8(s2, s3);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseTYPE_NAME() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 213;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$currPos;
    peg$silentFails++;
    s2 = peg$parsekeyword();
    peg$silentFails--;
    if (s2 === peg$FAILED) {
      s1 = undefined;
    } else {
      peg$currPos = s1;
      s1 = peg$FAILED;
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseIDENTIFIER();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f9(s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseinteger_constant() {
    var s0, s1, s2, s3;

    var key = peg$currPos * 305 + 214;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$currPos;
    s2 = peg$parsedecimal_constant();
    if (s2 !== peg$FAILED) {
      s3 = peg$parseinteger_suffix();
      if (s3 === peg$FAILED) {
        s3 = null;
      }
      s2 = [s2, s3];
      s1 = s2;
    } else {
      peg$currPos = s1;
      s1 = peg$FAILED;
    }
    if (s1 !== peg$FAILED) {
      s0 = input.substring(s0, peg$currPos);
    } else {
      s0 = s1;
    }
    if (s0 === peg$FAILED) {
      s0 = peg$currPos;
      s1 = peg$currPos;
      s2 = peg$parseoctal_constant();
      if (s2 !== peg$FAILED) {
        s3 = peg$parseinteger_suffix();
        if (s3 === peg$FAILED) {
          s3 = null;
        }
        s2 = [s2, s3];
        s1 = s2;
      } else {
        peg$currPos = s1;
        s1 = peg$FAILED;
      }
      if (s1 !== peg$FAILED) {
        s0 = input.substring(s0, peg$currPos);
      } else {
        s0 = s1;
      }
      if (s0 === peg$FAILED) {
        s0 = peg$currPos;
        s1 = peg$currPos;
        s2 = peg$parsehexadecimal_constant();
        if (s2 !== peg$FAILED) {
          s3 = peg$parseinteger_suffix();
          if (s3 === peg$FAILED) {
            s3 = null;
          }
          s2 = [s2, s3];
          s1 = s2;
        } else {
          peg$currPos = s1;
          s1 = peg$FAILED;
        }
        if (s1 !== peg$FAILED) {
          s0 = input.substring(s0, peg$currPos);
        } else {
          s0 = s1;
        }
      }
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseinteger_suffix() {
    var s0;

    var key = peg$currPos * 305 + 215;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    if (peg$r2.test(input.charAt(peg$currPos))) {
      s0 = input.charAt(peg$currPos);
      peg$currPos++;
    } else {
      s0 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e210); }
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsedecimal_constant() {
    var s0, s1, s2, s3, s4;

    var key = peg$currPos * 305 + 216;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$currPos;
    if (peg$r3.test(input.charAt(peg$currPos))) {
      s2 = input.charAt(peg$currPos);
      peg$currPos++;
    } else {
      s2 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e211); }
    }
    if (s2 !== peg$FAILED) {
      s3 = [];
      s4 = peg$parsedigit();
      while (s4 !== peg$FAILED) {
        s3.push(s4);
        s4 = peg$parsedigit();
      }
      s2 = [s2, s3];
      s1 = s2;
    } else {
      peg$currPos = s1;
      s1 = peg$FAILED;
    }
    if (s1 !== peg$FAILED) {
      s0 = input.substring(s0, peg$currPos);
    } else {
      s0 = s1;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseoctal_constant() {
    var s0, s1, s2, s3;

    var key = peg$currPos * 305 + 217;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.charCodeAt(peg$currPos) === 48) {
      s1 = peg$c207;
      peg$currPos++;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e212); }
    }
    if (s1 !== peg$FAILED) {
      s2 = [];
      if (peg$r4.test(input.charAt(peg$currPos))) {
        s3 = input.charAt(peg$currPos);
        peg$currPos++;
      } else {
        s3 = peg$FAILED;
        if (peg$silentFails === 0) { peg$fail(peg$e213); }
      }
      while (s3 !== peg$FAILED) {
        s2.push(s3);
        if (peg$r4.test(input.charAt(peg$currPos))) {
          s3 = input.charAt(peg$currPos);
          peg$currPos++;
        } else {
          s3 = peg$FAILED;
          if (peg$silentFails === 0) { peg$fail(peg$e213); }
        }
      }
      s1 = [s1, s2];
      s0 = s1;
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsehexadecimal_constant() {
    var s0, s1, s2, s3, s4;

    var key = peg$currPos * 305 + 218;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    if (input.charCodeAt(peg$currPos) === 48) {
      s1 = peg$c207;
      peg$currPos++;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e212); }
    }
    if (s1 !== peg$FAILED) {
      if (peg$r5.test(input.charAt(peg$currPos))) {
        s2 = input.charAt(peg$currPos);
        peg$currPos++;
      } else {
        s2 = peg$FAILED;
        if (peg$silentFails === 0) { peg$fail(peg$e214); }
      }
      if (s2 !== peg$FAILED) {
        s3 = [];
        if (peg$r6.test(input.charAt(peg$currPos))) {
          s4 = input.charAt(peg$currPos);
          peg$currPos++;
        } else {
          s4 = peg$FAILED;
          if (peg$silentFails === 0) { peg$fail(peg$e215); }
        }
        while (s4 !== peg$FAILED) {
          s3.push(s4);
          if (peg$r6.test(input.charAt(peg$currPos))) {
            s4 = input.charAt(peg$currPos);
            peg$currPos++;
          } else {
            s4 = peg$FAILED;
            if (peg$silentFails === 0) { peg$fail(peg$e215); }
          }
        }
        s1 = [s1, s2, s3];
        s0 = s1;
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsedigit() {
    var s0;

    var key = peg$currPos * 305 + 219;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    if (peg$r7.test(input.charAt(peg$currPos))) {
      s0 = input.charAt(peg$currPos);
      peg$currPos++;
    } else {
      s0 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e216); }
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsefloating_constant() {
    var s0, s1, s2, s3, s4;

    var key = peg$currPos * 305 + 220;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$currPos;
    s2 = peg$parsefractional_constant();
    if (s2 !== peg$FAILED) {
      s3 = peg$parseexponent_part();
      if (s3 === peg$FAILED) {
        s3 = null;
      }
      s4 = peg$parsefloating_suffix();
      if (s4 === peg$FAILED) {
        s4 = null;
      }
      s2 = [s2, s3, s4];
      s1 = s2;
    } else {
      peg$currPos = s1;
      s1 = peg$FAILED;
    }
    if (s1 !== peg$FAILED) {
      s0 = input.substring(s0, peg$currPos);
    } else {
      s0 = s1;
    }
    if (s0 === peg$FAILED) {
      s0 = peg$currPos;
      s1 = peg$currPos;
      s2 = peg$parsedigit_sequence();
      if (s2 !== peg$FAILED) {
        s3 = peg$parseexponent_part();
        if (s3 !== peg$FAILED) {
          s4 = peg$parsefloating_suffix();
          if (s4 === peg$FAILED) {
            s4 = null;
          }
          s2 = [s2, s3, s4];
          s1 = s2;
        } else {
          peg$currPos = s1;
          s1 = peg$FAILED;
        }
      } else {
        peg$currPos = s1;
        s1 = peg$FAILED;
      }
      if (s1 !== peg$FAILED) {
        s0 = input.substring(s0, peg$currPos);
      } else {
        s0 = s1;
      }
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsefractional_constant() {
    var s0, s1, s2, s3, s4;

    var key = peg$currPos * 305 + 221;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$currPos;
    s2 = peg$parsedigit_sequence();
    if (s2 === peg$FAILED) {
      s2 = null;
    }
    if (input.charCodeAt(peg$currPos) === 46) {
      s3 = peg$c189;
      peg$currPos++;
    } else {
      s3 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e190); }
    }
    if (s3 !== peg$FAILED) {
      s4 = peg$parsedigit_sequence();
      if (s4 === peg$FAILED) {
        s4 = null;
      }
      s2 = [s2, s3, s4];
      s1 = s2;
    } else {
      peg$currPos = s1;
      s1 = peg$FAILED;
    }
    if (s1 !== peg$FAILED) {
      s0 = input.substring(s0, peg$currPos);
    } else {
      s0 = s1;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseexponent_part() {
    var s0, s1, s2, s3, s4;

    var key = peg$currPos * 305 + 222;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    peg$silentFails++;
    s0 = peg$currPos;
    s1 = peg$currPos;
    if (peg$r8.test(input.charAt(peg$currPos))) {
      s2 = input.charAt(peg$currPos);
      peg$currPos++;
    } else {
      s2 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e218); }
    }
    if (s2 !== peg$FAILED) {
      if (peg$r9.test(input.charAt(peg$currPos))) {
        s3 = input.charAt(peg$currPos);
        peg$currPos++;
      } else {
        s3 = peg$FAILED;
        if (peg$silentFails === 0) { peg$fail(peg$e219); }
      }
      if (s3 === peg$FAILED) {
        s3 = null;
      }
      s4 = peg$parsedigit_sequence();
      if (s4 !== peg$FAILED) {
        s2 = [s2, s3, s4];
        s1 = s2;
      } else {
        peg$currPos = s1;
        s1 = peg$FAILED;
      }
    } else {
      peg$currPos = s1;
      s1 = peg$FAILED;
    }
    if (s1 !== peg$FAILED) {
      s0 = input.substring(s0, peg$currPos);
    } else {
      s0 = s1;
    }
    peg$silentFails--;
    if (s0 === peg$FAILED) {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e217); }
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsedigit_sequence() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 223;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = [];
    s2 = peg$parsedigit();
    if (s2 !== peg$FAILED) {
      while (s2 !== peg$FAILED) {
        s1.push(s2);
        s2 = peg$parsedigit();
      }
    } else {
      s1 = peg$FAILED;
    }
    if (s1 !== peg$FAILED) {
      s0 = input.substring(s0, peg$currPos);
    } else {
      s0 = s1;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsefloating_suffix() {
    var s0;

    var key = peg$currPos * 305 + 224;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    if (peg$r10.test(input.charAt(peg$currPos))) {
      s0 = input.charAt(peg$currPos);
      peg$currPos++;
    } else {
      s0 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e220); }
    }
    if (s0 === peg$FAILED) {
      if (input.substr(peg$currPos, 2) === peg$c208) {
        s0 = peg$c208;
        peg$currPos += 2;
      } else {
        s0 = peg$FAILED;
        if (peg$silentFails === 0) { peg$fail(peg$e221); }
      }
      if (s0 === peg$FAILED) {
        if (input.substr(peg$currPos, 2) === peg$c209) {
          s0 = peg$c209;
          peg$currPos += 2;
        } else {
          s0 = peg$FAILED;
          if (peg$silentFails === 0) { peg$fail(peg$e222); }
        }
      }
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseprimary_expression() {
    var s0, s1, s2, s3;

    var key = peg$currPos * 305 + 225;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    peg$silentFails++;
    s0 = peg$parseFLOATCONSTANT();
    if (s0 === peg$FAILED) {
      s0 = peg$parseINTCONSTANT();
      if (s0 === peg$FAILED) {
        s0 = peg$parseUINTCONSTANT();
        if (s0 === peg$FAILED) {
          s0 = peg$parseBOOLCONSTANT();
          if (s0 === peg$FAILED) {
            s0 = peg$parseDOUBLECONSTANT();
            if (s0 === peg$FAILED) {
              s0 = peg$currPos;
              s1 = peg$parseLEFT_PAREN();
              if (s1 !== peg$FAILED) {
                s2 = peg$parseexpression();
                if (s2 !== peg$FAILED) {
                  s3 = peg$parseRIGHT_PAREN();
                  if (s3 !== peg$FAILED) {
                    peg$savedPos = s0;
                    s0 = peg$f10(s1, s2, s3);
                  } else {
                    peg$currPos = s0;
                    s0 = peg$FAILED;
                  }
                } else {
                  peg$currPos = s0;
                  s0 = peg$FAILED;
                }
              } else {
                peg$currPos = s0;
                s0 = peg$FAILED;
              }
              if (s0 === peg$FAILED) {
                s0 = peg$currPos;
                s1 = peg$parseIDENTIFIER();
                if (s1 !== peg$FAILED) {
                  peg$savedPos = s0;
                  s1 = peg$f11(s1);
                }
                s0 = s1;
              }
            }
          }
        }
      }
    }
    peg$silentFails--;
    if (s0 === peg$FAILED) {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e223); }
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsepostfix_expression() {
    var s0, s1, s2, s3, s4;

    var key = peg$currPos * 305 + 226;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$currPos;
    s2 = peg$parsefunction_call();
    if (s2 !== peg$FAILED) {
      s3 = [];
      s4 = peg$parsepostfix_expression_suffix();
      while (s4 !== peg$FAILED) {
        s3.push(s4);
        s4 = peg$parsepostfix_expression_suffix();
      }
      s2 = [s2, s3];
      s1 = s2;
    } else {
      peg$currPos = s1;
      s1 = peg$FAILED;
    }
    if (s1 === peg$FAILED) {
      s1 = peg$currPos;
      s2 = peg$parseprimary_expression();
      if (s2 !== peg$FAILED) {
        s3 = [];
        s4 = peg$parsepostfix_expression_suffix();
        while (s4 !== peg$FAILED) {
          s3.push(s4);
          s4 = peg$parsepostfix_expression_suffix();
        }
        s2 = [s2, s3];
        s1 = s2;
      } else {
        peg$currPos = s1;
        s1 = peg$FAILED;
      }
    }
    if (s1 !== peg$FAILED) {
      peg$savedPos = s0;
      s1 = peg$f12(s1);
    }
    s0 = s1;

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsepostfix_expression_suffix() {
    var s0;

    var key = peg$currPos * 305 + 227;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$parseinteger_index();
    if (s0 === peg$FAILED) {
      s0 = peg$parsefield_selection();
      if (s0 === peg$FAILED) {
        s0 = peg$parseINC_OP();
        if (s0 === peg$FAILED) {
          s0 = peg$parseDEC_OP();
        }
      }
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseinteger_index() {
    var s0, s1, s2, s3;

    var key = peg$currPos * 305 + 228;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$parseLEFT_BRACKET();
    if (s1 !== peg$FAILED) {
      s2 = peg$parseexpression();
      if (s2 !== peg$FAILED) {
        s3 = peg$parseRIGHT_BRACKET();
        if (s3 !== peg$FAILED) {
          peg$savedPos = s0;
          s0 = peg$f13(s1, s2, s3);
        } else {
          peg$currPos = s0;
          s0 = peg$FAILED;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsefield_selection() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 229;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$parseDOT();
    if (s1 !== peg$FAILED) {
      s2 = peg$parseIDENTIFIER();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f14(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsefunction_call() {
    var s0, s1, s2, s3;

    var key = peg$currPos * 305 + 230;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$parsefunction_identifier();
    if (s1 !== peg$FAILED) {
      s2 = peg$parsefunction_arguments();
      if (s2 === peg$FAILED) {
        s2 = null;
      }
      s3 = peg$parseRIGHT_PAREN();
      if (s3 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f15(s1, s2, s3);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsefunction_arguments() {
    var s0, s1, s2, s3, s4, s5;

    var key = peg$currPos * 305 + 231;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$parseVOID();
    if (s1 !== peg$FAILED) {
      peg$savedPos = s0;
      s1 = peg$f16(s1);
    }
    s0 = s1;
    if (s0 === peg$FAILED) {
      s0 = peg$currPos;
      s1 = peg$parseassignment_expression();
      if (s1 !== peg$FAILED) {
        s2 = [];
        s3 = peg$currPos;
        s4 = peg$parseCOMMA();
        if (s4 !== peg$FAILED) {
          s5 = peg$parseassignment_expression();
          if (s5 !== peg$FAILED) {
            s4 = [s4, s5];
            s3 = s4;
          } else {
            peg$currPos = s3;
            s3 = peg$FAILED;
          }
        } else {
          peg$currPos = s3;
          s3 = peg$FAILED;
        }
        while (s3 !== peg$FAILED) {
          s2.push(s3);
          s3 = peg$currPos;
          s4 = peg$parseCOMMA();
          if (s4 !== peg$FAILED) {
            s5 = peg$parseassignment_expression();
            if (s5 !== peg$FAILED) {
              s4 = [s4, s5];
              s3 = s4;
            } else {
              peg$currPos = s3;
              s3 = peg$FAILED;
            }
          } else {
            peg$currPos = s3;
            s3 = peg$FAILED;
          }
        }
        peg$savedPos = s0;
        s0 = peg$f17(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsefunction_identifier() {
    var s0, s1, s2, s3, s4;

    var key = peg$currPos * 305 + 232;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$currPos;
    s2 = peg$parsechained_function_call();
    if (s2 !== peg$FAILED) {
      s3 = peg$parsefunction_suffix();
      if (s3 !== peg$FAILED) {
        s4 = peg$parseLEFT_PAREN();
        if (s4 !== peg$FAILED) {
          peg$savedPos = s1;
          s1 = peg$f18(s2, s3, s4);
        } else {
          peg$currPos = s1;
          s1 = peg$FAILED;
        }
      } else {
        peg$currPos = s1;
        s1 = peg$FAILED;
      }
    } else {
      peg$currPos = s1;
      s1 = peg$FAILED;
    }
    if (s1 === peg$FAILED) {
      s1 = peg$currPos;
      s2 = peg$parsetype_specifier();
      if (s2 !== peg$FAILED) {
        s3 = peg$parsefunction_suffix();
        if (s3 === peg$FAILED) {
          s3 = null;
        }
        s4 = peg$parseLEFT_PAREN();
        if (s4 !== peg$FAILED) {
          peg$savedPos = s1;
          s1 = peg$f18(s2, s3, s4);
        } else {
          peg$currPos = s1;
          s1 = peg$FAILED;
        }
      } else {
        peg$currPos = s1;
        s1 = peg$FAILED;
      }
    }
    if (s1 !== peg$FAILED) {
      peg$savedPos = s0;
      s1 = peg$f19(s1);
    }
    s0 = s1;

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsefunction_suffix() {
    var s0;

    var key = peg$currPos * 305 + 233;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$parseinteger_index();
    if (s0 === peg$FAILED) {
      s0 = peg$parsefield_selection();
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsechained_function_call() {
    var s0, s1, s2, s3, s4;

    var key = peg$currPos * 305 + 234;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$parsetype_specifier();
    if (s1 !== peg$FAILED) {
      s2 = peg$parseLEFT_PAREN();
      if (s2 !== peg$FAILED) {
        s3 = peg$parsefunction_arguments();
        if (s3 === peg$FAILED) {
          s3 = null;
        }
        s4 = peg$parseRIGHT_PAREN();
        if (s4 !== peg$FAILED) {
          peg$savedPos = s0;
          s0 = peg$f20(s1, s2, s3, s4);
        } else {
          peg$currPos = s0;
          s0 = peg$FAILED;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseunary_expression() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 235;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    peg$silentFails++;
    s0 = peg$parsepostfix_expression();
    if (s0 === peg$FAILED) {
      s0 = peg$currPos;
      s1 = peg$parseINC_OP();
      if (s1 === peg$FAILED) {
        s1 = peg$parseDEC_OP();
        if (s1 === peg$FAILED) {
          s1 = peg$parsePLUS();
          if (s1 === peg$FAILED) {
            s1 = peg$parseDASH();
            if (s1 === peg$FAILED) {
              s1 = peg$parseBANG();
              if (s1 === peg$FAILED) {
                s1 = peg$parseTILDE();
              }
            }
          }
        }
      }
      if (s1 !== peg$FAILED) {
        s2 = peg$parseunary_expression();
        if (s2 !== peg$FAILED) {
          peg$savedPos = s0;
          s0 = peg$f21(s1, s2);
        } else {
          peg$currPos = s0;
          s0 = peg$FAILED;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    }
    peg$silentFails--;
    if (s0 === peg$FAILED) {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e224); }
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsemultiplicative_expression() {
    var s0, s1, s2, s3, s4, s5;

    var key = peg$currPos * 305 + 236;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$parseunary_expression();
    if (s1 !== peg$FAILED) {
      s2 = [];
      s3 = peg$currPos;
      s4 = peg$parseSTAR();
      if (s4 === peg$FAILED) {
        s4 = peg$parseSLASH();
        if (s4 === peg$FAILED) {
          s4 = peg$parsePERCENT();
        }
      }
      if (s4 !== peg$FAILED) {
        s5 = peg$parseunary_expression();
        if (s5 !== peg$FAILED) {
          s4 = [s4, s5];
          s3 = s4;
        } else {
          peg$currPos = s3;
          s3 = peg$FAILED;
        }
      } else {
        peg$currPos = s3;
        s3 = peg$FAILED;
      }
      while (s3 !== peg$FAILED) {
        s2.push(s3);
        s3 = peg$currPos;
        s4 = peg$parseSTAR();
        if (s4 === peg$FAILED) {
          s4 = peg$parseSLASH();
          if (s4 === peg$FAILED) {
            s4 = peg$parsePERCENT();
          }
        }
        if (s4 !== peg$FAILED) {
          s5 = peg$parseunary_expression();
          if (s5 !== peg$FAILED) {
            s4 = [s4, s5];
            s3 = s4;
          } else {
            peg$currPos = s3;
            s3 = peg$FAILED;
          }
        } else {
          peg$currPos = s3;
          s3 = peg$FAILED;
        }
      }
      peg$savedPos = s0;
      s0 = peg$f22(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseadditive_expression() {
    var s0, s1, s2, s3, s4, s5;

    var key = peg$currPos * 305 + 237;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$parsemultiplicative_expression();
    if (s1 !== peg$FAILED) {
      s2 = [];
      s3 = peg$currPos;
      s4 = peg$parsePLUS();
      if (s4 === peg$FAILED) {
        s4 = peg$parseDASH();
      }
      if (s4 !== peg$FAILED) {
        s5 = peg$parsemultiplicative_expression();
        if (s5 !== peg$FAILED) {
          s4 = [s4, s5];
          s3 = s4;
        } else {
          peg$currPos = s3;
          s3 = peg$FAILED;
        }
      } else {
        peg$currPos = s3;
        s3 = peg$FAILED;
      }
      while (s3 !== peg$FAILED) {
        s2.push(s3);
        s3 = peg$currPos;
        s4 = peg$parsePLUS();
        if (s4 === peg$FAILED) {
          s4 = peg$parseDASH();
        }
        if (s4 !== peg$FAILED) {
          s5 = peg$parsemultiplicative_expression();
          if (s5 !== peg$FAILED) {
            s4 = [s4, s5];
            s3 = s4;
          } else {
            peg$currPos = s3;
            s3 = peg$FAILED;
          }
        } else {
          peg$currPos = s3;
          s3 = peg$FAILED;
        }
      }
      peg$savedPos = s0;
      s0 = peg$f22(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseshift_expression() {
    var s0, s1, s2, s3, s4, s5;

    var key = peg$currPos * 305 + 238;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$parseadditive_expression();
    if (s1 !== peg$FAILED) {
      s2 = [];
      s3 = peg$currPos;
      s4 = peg$parseRIGHT_OP();
      if (s4 === peg$FAILED) {
        s4 = peg$parseLEFT_OP();
      }
      if (s4 !== peg$FAILED) {
        s5 = peg$parseadditive_expression();
        if (s5 !== peg$FAILED) {
          s4 = [s4, s5];
          s3 = s4;
        } else {
          peg$currPos = s3;
          s3 = peg$FAILED;
        }
      } else {
        peg$currPos = s3;
        s3 = peg$FAILED;
      }
      while (s3 !== peg$FAILED) {
        s2.push(s3);
        s3 = peg$currPos;
        s4 = peg$parseRIGHT_OP();
        if (s4 === peg$FAILED) {
          s4 = peg$parseLEFT_OP();
        }
        if (s4 !== peg$FAILED) {
          s5 = peg$parseadditive_expression();
          if (s5 !== peg$FAILED) {
            s4 = [s4, s5];
            s3 = s4;
          } else {
            peg$currPos = s3;
            s3 = peg$FAILED;
          }
        } else {
          peg$currPos = s3;
          s3 = peg$FAILED;
        }
      }
      peg$savedPos = s0;
      s0 = peg$f22(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parserelational_expression() {
    var s0, s1, s2, s3, s4, s5;

    var key = peg$currPos * 305 + 239;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$parseshift_expression();
    if (s1 !== peg$FAILED) {
      s2 = [];
      s3 = peg$currPos;
      s4 = peg$parseLE_OP();
      if (s4 === peg$FAILED) {
        s4 = peg$parseGE_OP();
        if (s4 === peg$FAILED) {
          s4 = peg$parseLEFT_ANGLE();
          if (s4 === peg$FAILED) {
            s4 = peg$parseRIGHT_ANGLE();
          }
        }
      }
      if (s4 !== peg$FAILED) {
        s5 = peg$parseshift_expression();
        if (s5 !== peg$FAILED) {
          s4 = [s4, s5];
          s3 = s4;
        } else {
          peg$currPos = s3;
          s3 = peg$FAILED;
        }
      } else {
        peg$currPos = s3;
        s3 = peg$FAILED;
      }
      while (s3 !== peg$FAILED) {
        s2.push(s3);
        s3 = peg$currPos;
        s4 = peg$parseLE_OP();
        if (s4 === peg$FAILED) {
          s4 = peg$parseGE_OP();
          if (s4 === peg$FAILED) {
            s4 = peg$parseLEFT_ANGLE();
            if (s4 === peg$FAILED) {
              s4 = peg$parseRIGHT_ANGLE();
            }
          }
        }
        if (s4 !== peg$FAILED) {
          s5 = peg$parseshift_expression();
          if (s5 !== peg$FAILED) {
            s4 = [s4, s5];
            s3 = s4;
          } else {
            peg$currPos = s3;
            s3 = peg$FAILED;
          }
        } else {
          peg$currPos = s3;
          s3 = peg$FAILED;
        }
      }
      peg$savedPos = s0;
      s0 = peg$f22(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseequality_expression() {
    var s0, s1, s2, s3, s4, s5;

    var key = peg$currPos * 305 + 240;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    peg$silentFails++;
    s0 = peg$currPos;
    s1 = peg$parserelational_expression();
    if (s1 !== peg$FAILED) {
      s2 = [];
      s3 = peg$currPos;
      s4 = peg$parseEQ_OP();
      if (s4 === peg$FAILED) {
        s4 = peg$parseNE_OP();
      }
      if (s4 !== peg$FAILED) {
        s5 = peg$parserelational_expression();
        if (s5 !== peg$FAILED) {
          s4 = [s4, s5];
          s3 = s4;
        } else {
          peg$currPos = s3;
          s3 = peg$FAILED;
        }
      } else {
        peg$currPos = s3;
        s3 = peg$FAILED;
      }
      while (s3 !== peg$FAILED) {
        s2.push(s3);
        s3 = peg$currPos;
        s4 = peg$parseEQ_OP();
        if (s4 === peg$FAILED) {
          s4 = peg$parseNE_OP();
        }
        if (s4 !== peg$FAILED) {
          s5 = peg$parserelational_expression();
          if (s5 !== peg$FAILED) {
            s4 = [s4, s5];
            s3 = s4;
          } else {
            peg$currPos = s3;
            s3 = peg$FAILED;
          }
        } else {
          peg$currPos = s3;
          s3 = peg$FAILED;
        }
      }
      peg$savedPos = s0;
      s0 = peg$f22(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }
    peg$silentFails--;
    if (s0 === peg$FAILED) {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e225); }
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseand_expression() {
    var s0, s1, s2, s3, s4, s5;

    var key = peg$currPos * 305 + 241;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    peg$silentFails++;
    s0 = peg$currPos;
    s1 = peg$parseequality_expression();
    if (s1 !== peg$FAILED) {
      s2 = [];
      s3 = peg$currPos;
      s4 = peg$parseAMPERSAND();
      if (s4 !== peg$FAILED) {
        s5 = peg$parseequality_expression();
        if (s5 !== peg$FAILED) {
          s4 = [s4, s5];
          s3 = s4;
        } else {
          peg$currPos = s3;
          s3 = peg$FAILED;
        }
      } else {
        peg$currPos = s3;
        s3 = peg$FAILED;
      }
      while (s3 !== peg$FAILED) {
        s2.push(s3);
        s3 = peg$currPos;
        s4 = peg$parseAMPERSAND();
        if (s4 !== peg$FAILED) {
          s5 = peg$parseequality_expression();
          if (s5 !== peg$FAILED) {
            s4 = [s4, s5];
            s3 = s4;
          } else {
            peg$currPos = s3;
            s3 = peg$FAILED;
          }
        } else {
          peg$currPos = s3;
          s3 = peg$FAILED;
        }
      }
      peg$savedPos = s0;
      s0 = peg$f22(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }
    peg$silentFails--;
    if (s0 === peg$FAILED) {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e226); }
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseexclusive_or_expression() {
    var s0, s1, s2, s3, s4, s5;

    var key = peg$currPos * 305 + 242;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$parseand_expression();
    if (s1 !== peg$FAILED) {
      s2 = [];
      s3 = peg$currPos;
      s4 = peg$parseCARET();
      if (s4 !== peg$FAILED) {
        s5 = peg$parseand_expression();
        if (s5 !== peg$FAILED) {
          s4 = [s4, s5];
          s3 = s4;
        } else {
          peg$currPos = s3;
          s3 = peg$FAILED;
        }
      } else {
        peg$currPos = s3;
        s3 = peg$FAILED;
      }
      while (s3 !== peg$FAILED) {
        s2.push(s3);
        s3 = peg$currPos;
        s4 = peg$parseCARET();
        if (s4 !== peg$FAILED) {
          s5 = peg$parseand_expression();
          if (s5 !== peg$FAILED) {
            s4 = [s4, s5];
            s3 = s4;
          } else {
            peg$currPos = s3;
            s3 = peg$FAILED;
          }
        } else {
          peg$currPos = s3;
          s3 = peg$FAILED;
        }
      }
      peg$savedPos = s0;
      s0 = peg$f22(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseinclusive_or_expression() {
    var s0, s1, s2, s3, s4, s5;

    var key = peg$currPos * 305 + 243;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$parseexclusive_or_expression();
    if (s1 !== peg$FAILED) {
      s2 = [];
      s3 = peg$currPos;
      s4 = peg$parseVERTICAL_BAR();
      if (s4 !== peg$FAILED) {
        s5 = peg$parseexclusive_or_expression();
        if (s5 !== peg$FAILED) {
          s4 = [s4, s5];
          s3 = s4;
        } else {
          peg$currPos = s3;
          s3 = peg$FAILED;
        }
      } else {
        peg$currPos = s3;
        s3 = peg$FAILED;
      }
      while (s3 !== peg$FAILED) {
        s2.push(s3);
        s3 = peg$currPos;
        s4 = peg$parseVERTICAL_BAR();
        if (s4 !== peg$FAILED) {
          s5 = peg$parseexclusive_or_expression();
          if (s5 !== peg$FAILED) {
            s4 = [s4, s5];
            s3 = s4;
          } else {
            peg$currPos = s3;
            s3 = peg$FAILED;
          }
        } else {
          peg$currPos = s3;
          s3 = peg$FAILED;
        }
      }
      peg$savedPos = s0;
      s0 = peg$f22(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parselogical_and_expression() {
    var s0, s1, s2, s3, s4, s5;

    var key = peg$currPos * 305 + 244;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$parseinclusive_or_expression();
    if (s1 !== peg$FAILED) {
      s2 = [];
      s3 = peg$currPos;
      s4 = peg$parseAND_OP();
      if (s4 !== peg$FAILED) {
        s5 = peg$parseinclusive_or_expression();
        if (s5 !== peg$FAILED) {
          s4 = [s4, s5];
          s3 = s4;
        } else {
          peg$currPos = s3;
          s3 = peg$FAILED;
        }
      } else {
        peg$currPos = s3;
        s3 = peg$FAILED;
      }
      while (s3 !== peg$FAILED) {
        s2.push(s3);
        s3 = peg$currPos;
        s4 = peg$parseAND_OP();
        if (s4 !== peg$FAILED) {
          s5 = peg$parseinclusive_or_expression();
          if (s5 !== peg$FAILED) {
            s4 = [s4, s5];
            s3 = s4;
          } else {
            peg$currPos = s3;
            s3 = peg$FAILED;
          }
        } else {
          peg$currPos = s3;
          s3 = peg$FAILED;
        }
      }
      peg$savedPos = s0;
      s0 = peg$f22(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parselogical_xor_expression() {
    var s0, s1, s2, s3, s4, s5;

    var key = peg$currPos * 305 + 245;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$parselogical_and_expression();
    if (s1 !== peg$FAILED) {
      s2 = [];
      s3 = peg$currPos;
      s4 = peg$parseXOR_OP();
      if (s4 !== peg$FAILED) {
        s5 = peg$parselogical_and_expression();
        if (s5 !== peg$FAILED) {
          s4 = [s4, s5];
          s3 = s4;
        } else {
          peg$currPos = s3;
          s3 = peg$FAILED;
        }
      } else {
        peg$currPos = s3;
        s3 = peg$FAILED;
      }
      while (s3 !== peg$FAILED) {
        s2.push(s3);
        s3 = peg$currPos;
        s4 = peg$parseXOR_OP();
        if (s4 !== peg$FAILED) {
          s5 = peg$parselogical_and_expression();
          if (s5 !== peg$FAILED) {
            s4 = [s4, s5];
            s3 = s4;
          } else {
            peg$currPos = s3;
            s3 = peg$FAILED;
          }
        } else {
          peg$currPos = s3;
          s3 = peg$FAILED;
        }
      }
      peg$savedPos = s0;
      s0 = peg$f22(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parselogical_or_expression() {
    var s0, s1, s2, s3, s4, s5;

    var key = peg$currPos * 305 + 246;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$parselogical_xor_expression();
    if (s1 !== peg$FAILED) {
      s2 = [];
      s3 = peg$currPos;
      s4 = peg$parseOR_OP();
      if (s4 !== peg$FAILED) {
        s5 = peg$parselogical_xor_expression();
        if (s5 !== peg$FAILED) {
          s4 = [s4, s5];
          s3 = s4;
        } else {
          peg$currPos = s3;
          s3 = peg$FAILED;
        }
      } else {
        peg$currPos = s3;
        s3 = peg$FAILED;
      }
      while (s3 !== peg$FAILED) {
        s2.push(s3);
        s3 = peg$currPos;
        s4 = peg$parseOR_OP();
        if (s4 !== peg$FAILED) {
          s5 = peg$parselogical_xor_expression();
          if (s5 !== peg$FAILED) {
            s4 = [s4, s5];
            s3 = s4;
          } else {
            peg$currPos = s3;
            s3 = peg$FAILED;
          }
        } else {
          peg$currPos = s3;
          s3 = peg$FAILED;
        }
      }
      peg$savedPos = s0;
      s0 = peg$f22(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseternary_expression() {
    var s0, s1, s2, s3, s4, s5, s6;

    var key = peg$currPos * 305 + 247;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$parselogical_or_expression();
    if (s1 !== peg$FAILED) {
      s2 = peg$currPos;
      s3 = peg$parseQUESTION();
      if (s3 !== peg$FAILED) {
        s4 = peg$parseexpression();
        if (s4 !== peg$FAILED) {
          s5 = peg$parseCOLON();
          if (s5 !== peg$FAILED) {
            s6 = peg$parseassignment_expression();
            if (s6 !== peg$FAILED) {
              peg$savedPos = s2;
              s2 = peg$f23(s1, s3, s4, s5, s6);
            } else {
              peg$currPos = s2;
              s2 = peg$FAILED;
            }
          } else {
            peg$currPos = s2;
            s2 = peg$FAILED;
          }
        } else {
          peg$currPos = s2;
          s2 = peg$FAILED;
        }
      } else {
        peg$currPos = s2;
        s2 = peg$FAILED;
      }
      if (s2 === peg$FAILED) {
        s2 = null;
      }
      peg$savedPos = s0;
      s0 = peg$f24(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseassignment_expression() {
    var s0, s1, s2, s3;

    var key = peg$currPos * 305 + 248;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$parseunary_expression();
    if (s1 !== peg$FAILED) {
      s2 = peg$parseassignment_operator();
      if (s2 !== peg$FAILED) {
        s3 = peg$parseassignment_expression();
        if (s3 !== peg$FAILED) {
          peg$savedPos = s0;
          s0 = peg$f25(s1, s2, s3);
        } else {
          peg$currPos = s0;
          s0 = peg$FAILED;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }
    if (s0 === peg$FAILED) {
      s0 = peg$parseternary_expression();
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseassignment_operator() {
    var s0, s1;

    var key = peg$currPos * 305 + 249;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    peg$silentFails++;
    s0 = peg$parseEQUAL();
    if (s0 === peg$FAILED) {
      s0 = peg$parseMUL_ASSIGN();
      if (s0 === peg$FAILED) {
        s0 = peg$parseDIV_ASSIGN();
        if (s0 === peg$FAILED) {
          s0 = peg$parseMOD_ASSIGN();
          if (s0 === peg$FAILED) {
            s0 = peg$parseADD_ASSIGN();
            if (s0 === peg$FAILED) {
              s0 = peg$parseSUB_ASSIGN();
              if (s0 === peg$FAILED) {
                s0 = peg$parseLEFT_ASSIGN();
                if (s0 === peg$FAILED) {
                  s0 = peg$parseRIGHT_ASSIGN();
                  if (s0 === peg$FAILED) {
                    s0 = peg$parseAND_ASSIGN();
                    if (s0 === peg$FAILED) {
                      s0 = peg$parseXOR_ASSIGN();
                      if (s0 === peg$FAILED) {
                        s0 = peg$parseOR_ASSIGN();
                      }
                    }
                  }
                }
              }
            }
          }
        }
      }
    }
    peg$silentFails--;
    if (s0 === peg$FAILED) {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e227); }
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseexpression() {
    var s0, s1, s2, s3, s4, s5;

    var key = peg$currPos * 305 + 250;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    peg$silentFails++;
    s0 = peg$currPos;
    s1 = peg$parseassignment_expression();
    if (s1 !== peg$FAILED) {
      s2 = [];
      s3 = peg$currPos;
      s4 = peg$parseCOMMA();
      if (s4 !== peg$FAILED) {
        s5 = peg$parseassignment_expression();
        if (s5 !== peg$FAILED) {
          s4 = [s4, s5];
          s3 = s4;
        } else {
          peg$currPos = s3;
          s3 = peg$FAILED;
        }
      } else {
        peg$currPos = s3;
        s3 = peg$FAILED;
      }
      while (s3 !== peg$FAILED) {
        s2.push(s3);
        s3 = peg$currPos;
        s4 = peg$parseCOMMA();
        if (s4 !== peg$FAILED) {
          s5 = peg$parseassignment_expression();
          if (s5 !== peg$FAILED) {
            s4 = [s4, s5];
            s3 = s4;
          } else {
            peg$currPos = s3;
            s3 = peg$FAILED;
          }
        } else {
          peg$currPos = s3;
          s3 = peg$FAILED;
        }
      }
      peg$savedPos = s0;
      s0 = peg$f22(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }
    peg$silentFails--;
    if (s0 === peg$FAILED) {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e228); }
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsedeclaration_statement() {
    var s0, s1;

    var key = peg$currPos * 305 + 251;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$parsedeclaration();
    if (s1 !== peg$FAILED) {
      peg$savedPos = s0;
      s1 = peg$f26(s1);
    }
    s0 = s1;

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsedeclaration() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 252;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$parsefunction_prototype();
    if (s1 !== peg$FAILED) {
      s2 = peg$parseSEMICOLON();
      if (s2 !== peg$FAILED) {
        s1 = [s1, s2];
        s0 = s1;
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }
    if (s0 === peg$FAILED) {
      s0 = peg$currPos;
      s1 = peg$parseprecision_declarator();
      if (s1 !== peg$FAILED) {
        s2 = peg$parseSEMICOLON();
        if (s2 !== peg$FAILED) {
          s1 = [s1, s2];
          s0 = s1;
        } else {
          peg$currPos = s0;
          s0 = peg$FAILED;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
      if (s0 === peg$FAILED) {
        s0 = peg$currPos;
        s1 = peg$parseinterface_declarator();
        if (s1 !== peg$FAILED) {
          s2 = peg$parseSEMICOLON();
          if (s2 !== peg$FAILED) {
            s1 = [s1, s2];
            s0 = s1;
          } else {
            peg$currPos = s0;
            s0 = peg$FAILED;
          }
        } else {
          peg$currPos = s0;
          s0 = peg$FAILED;
        }
        if (s0 === peg$FAILED) {
          s0 = peg$currPos;
          s1 = peg$parsequalifier_declarator();
          if (s1 !== peg$FAILED) {
            s2 = peg$parseSEMICOLON();
            if (s2 !== peg$FAILED) {
              s1 = [s1, s2];
              s0 = s1;
            } else {
              peg$currPos = s0;
              s0 = peg$FAILED;
            }
          } else {
            peg$currPos = s0;
            s0 = peg$FAILED;
          }
          if (s0 === peg$FAILED) {
            s0 = peg$currPos;
            s1 = peg$parseinit_declarator_list();
            if (s1 !== peg$FAILED) {
              s2 = peg$parseSEMICOLON();
              if (s2 !== peg$FAILED) {
                s1 = [s1, s2];
                s0 = s1;
              } else {
                peg$currPos = s0;
                s0 = peg$FAILED;
              }
            } else {
              peg$currPos = s0;
              s0 = peg$FAILED;
            }
          }
        }
      }
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsequalifier_declarator() {
    var s0, s1, s2, s3, s4, s5, s6;

    var key = peg$currPos * 305 + 253;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$parsetype_qualifiers();
    if (s1 !== peg$FAILED) {
      s2 = peg$parseIDENTIFIER();
      if (s2 === peg$FAILED) {
        s2 = null;
      }
      s3 = [];
      s4 = peg$currPos;
      s5 = peg$parseCOMMA();
      if (s5 !== peg$FAILED) {
        s6 = peg$parseIDENTIFIER();
        if (s6 !== peg$FAILED) {
          s5 = [s5, s6];
          s4 = s5;
        } else {
          peg$currPos = s4;
          s4 = peg$FAILED;
        }
      } else {
        peg$currPos = s4;
        s4 = peg$FAILED;
      }
      while (s4 !== peg$FAILED) {
        s3.push(s4);
        s4 = peg$currPos;
        s5 = peg$parseCOMMA();
        if (s5 !== peg$FAILED) {
          s6 = peg$parseIDENTIFIER();
          if (s6 !== peg$FAILED) {
            s5 = [s5, s6];
            s4 = s5;
          } else {
            peg$currPos = s4;
            s4 = peg$FAILED;
          }
        } else {
          peg$currPos = s4;
          s4 = peg$FAILED;
        }
      }
      peg$savedPos = s0;
      s0 = peg$f27(s1, s2, s3);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseinterface_declarator() {
    var s0, s1, s2, s3, s4, s5, s6;

    var key = peg$currPos * 305 + 254;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$parsetype_qualifiers();
    if (s1 !== peg$FAILED) {
      s2 = peg$parseIDENTIFIER();
      if (s2 !== peg$FAILED) {
        s3 = peg$parseLEFT_BRACE();
        if (s3 !== peg$FAILED) {
          s4 = peg$parsestruct_declaration_list();
          if (s4 !== peg$FAILED) {
            s5 = peg$parseRIGHT_BRACE();
            if (s5 !== peg$FAILED) {
              s6 = peg$parsequantified_identifier();
              if (s6 === peg$FAILED) {
                s6 = null;
              }
              peg$savedPos = s0;
              s0 = peg$f28(s1, s2, s3, s4, s5, s6);
            } else {
              peg$currPos = s0;
              s0 = peg$FAILED;
            }
          } else {
            peg$currPos = s0;
            s0 = peg$FAILED;
          }
        } else {
          peg$currPos = s0;
          s0 = peg$FAILED;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseprecision_declarator() {
    var s0, s1, s2, s3;

    var key = peg$currPos * 305 + 255;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    peg$silentFails++;
    s0 = peg$currPos;
    s1 = peg$parsePRECISION();
    if (s1 !== peg$FAILED) {
      s2 = peg$parseprecision_qualifier();
      if (s2 !== peg$FAILED) {
        s3 = peg$parsetype_specifier();
        if (s3 !== peg$FAILED) {
          peg$savedPos = s0;
          s0 = peg$f29(s1, s2, s3);
        } else {
          peg$currPos = s0;
          s0 = peg$FAILED;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }
    peg$silentFails--;
    if (s0 === peg$FAILED) {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e229); }
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsefunction_prototype() {
    var s0, s1, s2, s3;

    var key = peg$currPos * 305 + 256;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    peg$silentFails++;
    s0 = peg$currPos;
    s1 = peg$parsefunction_header();
    if (s1 !== peg$FAILED) {
      s2 = peg$parsefunction_parameters();
      if (s2 === peg$FAILED) {
        s2 = null;
      }
      s3 = peg$parseRIGHT_PAREN();
      if (s3 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f30(s1, s2, s3);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }
    peg$silentFails--;
    if (s0 === peg$FAILED) {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e230); }
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsefunction_header() {
    var s0, s1, s2, s3;

    var key = peg$currPos * 305 + 257;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    peg$silentFails++;
    s0 = peg$currPos;
    s1 = peg$parsefully_specified_type();
    if (s1 !== peg$FAILED) {
      s2 = peg$parseIDENTIFIER();
      if (s2 !== peg$FAILED) {
        s3 = peg$parseLEFT_PAREN();
        if (s3 !== peg$FAILED) {
          peg$savedPos = s0;
          s0 = peg$f31(s1, s2, s3);
        } else {
          peg$currPos = s0;
          s0 = peg$FAILED;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }
    peg$silentFails--;
    if (s0 === peg$FAILED) {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e231); }
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsefunction_parameters() {
    var s0, s1, s2, s3, s4, s5;

    var key = peg$currPos * 305 + 258;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    peg$silentFails++;
    s0 = peg$currPos;
    s1 = peg$parseparameter_declaration();
    if (s1 !== peg$FAILED) {
      s2 = [];
      s3 = peg$currPos;
      s4 = peg$parseCOMMA();
      if (s4 !== peg$FAILED) {
        s5 = peg$parseparameter_declaration();
        if (s5 !== peg$FAILED) {
          s4 = [s4, s5];
          s3 = s4;
        } else {
          peg$currPos = s3;
          s3 = peg$FAILED;
        }
      } else {
        peg$currPos = s3;
        s3 = peg$FAILED;
      }
      while (s3 !== peg$FAILED) {
        s2.push(s3);
        s3 = peg$currPos;
        s4 = peg$parseCOMMA();
        if (s4 !== peg$FAILED) {
          s5 = peg$parseparameter_declaration();
          if (s5 !== peg$FAILED) {
            s4 = [s4, s5];
            s3 = s4;
          } else {
            peg$currPos = s3;
            s3 = peg$FAILED;
          }
        } else {
          peg$currPos = s3;
          s3 = peg$FAILED;
        }
      }
      peg$savedPos = s0;
      s0 = peg$f32(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }
    peg$silentFails--;
    if (s0 === peg$FAILED) {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e232); }
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseparameter_declaration() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 259;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    peg$silentFails++;
    s0 = peg$currPos;
    s1 = [];
    s2 = peg$parseparameter_qualifier();
    while (s2 !== peg$FAILED) {
      s1.push(s2);
      s2 = peg$parseparameter_qualifier();
    }
    s2 = peg$parseparameter_declarator();
    if (s2 === peg$FAILED) {
      s2 = peg$parsetype_specifier();
    }
    if (s2 !== peg$FAILED) {
      peg$savedPos = s0;
      s0 = peg$f33(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }
    peg$silentFails--;
    if (s0 === peg$FAILED) {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e233); }
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseparameter_declarator() {
    var s0, s1, s2, s3;

    var key = peg$currPos * 305 + 260;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    peg$silentFails++;
    s0 = peg$currPos;
    s1 = peg$parsetype_specifier();
    if (s1 !== peg$FAILED) {
      s2 = peg$parseIDENTIFIER();
      if (s2 !== peg$FAILED) {
        s3 = peg$parsearray_specifier();
        if (s3 === peg$FAILED) {
          s3 = null;
        }
        peg$savedPos = s0;
        s0 = peg$f34(s1, s2, s3);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }
    peg$silentFails--;
    if (s0 === peg$FAILED) {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e234); }
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseparameter_qualifier() {
    var s0;

    var key = peg$currPos * 305 + 261;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$parseCONST();
    if (s0 === peg$FAILED) {
      s0 = peg$parseIN();
      if (s0 === peg$FAILED) {
        s0 = peg$parseOUT();
        if (s0 === peg$FAILED) {
          s0 = peg$parseINOUT();
          if (s0 === peg$FAILED) {
            s0 = peg$parsememory_qualifier();
            if (s0 === peg$FAILED) {
              s0 = peg$parseprecision_qualifier();
            }
          }
        }
      }
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsememory_qualifier() {
    var s0;

    var key = peg$currPos * 305 + 262;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$parseCOHERENT();
    if (s0 === peg$FAILED) {
      s0 = peg$parseVOLATILE();
      if (s0 === peg$FAILED) {
        s0 = peg$parseRESTRICT();
        if (s0 === peg$FAILED) {
          s0 = peg$parseREADONLY();
          if (s0 === peg$FAILED) {
            s0 = peg$parseWRITEONLY();
          }
        }
      }
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseinit_declarator_list() {
    var s0, s1, s2, s3, s4, s5;

    var key = peg$currPos * 305 + 263;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$parseinitial_declaration();
    if (s1 !== peg$FAILED) {
      s2 = [];
      s3 = peg$currPos;
      s4 = peg$parseCOMMA();
      if (s4 !== peg$FAILED) {
        s5 = peg$parsesubsequent_declaration();
        if (s5 !== peg$FAILED) {
          s4 = [s4, s5];
          s3 = s4;
        } else {
          peg$currPos = s3;
          s3 = peg$FAILED;
        }
      } else {
        peg$currPos = s3;
        s3 = peg$FAILED;
      }
      while (s3 !== peg$FAILED) {
        s2.push(s3);
        s3 = peg$currPos;
        s4 = peg$parseCOMMA();
        if (s4 !== peg$FAILED) {
          s5 = peg$parsesubsequent_declaration();
          if (s5 !== peg$FAILED) {
            s4 = [s4, s5];
            s3 = s4;
          } else {
            peg$currPos = s3;
            s3 = peg$FAILED;
          }
        } else {
          peg$currPos = s3;
          s3 = peg$FAILED;
        }
      }
      peg$savedPos = s0;
      s0 = peg$f35(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsesubsequent_declaration() {
    var s0, s1, s2, s3, s4, s5;

    var key = peg$currPos * 305 + 264;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$parseIDENTIFIER();
    if (s1 !== peg$FAILED) {
      s2 = peg$parsearray_specifier();
      if (s2 === peg$FAILED) {
        s2 = null;
      }
      s3 = peg$currPos;
      s4 = peg$parseEQUAL();
      if (s4 !== peg$FAILED) {
        s5 = peg$parseinitializer();
        if (s5 !== peg$FAILED) {
          s4 = [s4, s5];
          s3 = s4;
        } else {
          peg$currPos = s3;
          s3 = peg$FAILED;
        }
      } else {
        peg$currPos = s3;
        s3 = peg$FAILED;
      }
      if (s3 === peg$FAILED) {
        s3 = null;
      }
      peg$savedPos = s0;
      s0 = peg$f36(s1, s2, s3);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseinitial_declaration() {
    var s0, s1, s2, s3, s4, s5, s6, s7;

    var key = peg$currPos * 305 + 265;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$parsefully_specified_type();
    if (s1 !== peg$FAILED) {
      s2 = peg$currPos;
      s3 = peg$parseIDENTIFIER();
      if (s3 !== peg$FAILED) {
        s4 = peg$parsearray_specifier();
        if (s4 === peg$FAILED) {
          s4 = null;
        }
        s5 = peg$currPos;
        s6 = peg$parseEQUAL();
        if (s6 !== peg$FAILED) {
          s7 = peg$parseinitializer();
          if (s7 !== peg$FAILED) {
            s6 = [s6, s7];
            s5 = s6;
          } else {
            peg$currPos = s5;
            s5 = peg$FAILED;
          }
        } else {
          peg$currPos = s5;
          s5 = peg$FAILED;
        }
        if (s5 === peg$FAILED) {
          s5 = null;
        }
        s3 = [s3, s4, s5];
        s2 = s3;
      } else {
        peg$currPos = s2;
        s2 = peg$FAILED;
      }
      if (s2 === peg$FAILED) {
        s2 = null;
      }
      peg$savedPos = s0;
      s0 = peg$f37(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsefully_specified_type() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 266;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$parsetype_qualifiers();
    if (s1 === peg$FAILED) {
      s1 = null;
    }
    s2 = peg$parsetype_specifier();
    if (s2 !== peg$FAILED) {
      peg$savedPos = s0;
      s0 = peg$f38(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parselayout_qualifier() {
    var s0, s1, s2, s3, s4, s5, s6, s7, s8;

    var key = peg$currPos * 305 + 267;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$parseLAYOUT();
    if (s1 !== peg$FAILED) {
      s2 = peg$parseLEFT_PAREN();
      if (s2 !== peg$FAILED) {
        s3 = peg$currPos;
        s4 = peg$parselayout_qualifier_id();
        if (s4 !== peg$FAILED) {
          s5 = [];
          s6 = peg$currPos;
          s7 = peg$parseCOMMA();
          if (s7 !== peg$FAILED) {
            s8 = peg$parselayout_qualifier_id();
            if (s8 !== peg$FAILED) {
              s7 = [s7, s8];
              s6 = s7;
            } else {
              peg$currPos = s6;
              s6 = peg$FAILED;
            }
          } else {
            peg$currPos = s6;
            s6 = peg$FAILED;
          }
          while (s6 !== peg$FAILED) {
            s5.push(s6);
            s6 = peg$currPos;
            s7 = peg$parseCOMMA();
            if (s7 !== peg$FAILED) {
              s8 = peg$parselayout_qualifier_id();
              if (s8 !== peg$FAILED) {
                s7 = [s7, s8];
                s6 = s7;
              } else {
                peg$currPos = s6;
                s6 = peg$FAILED;
              }
            } else {
              peg$currPos = s6;
              s6 = peg$FAILED;
            }
          }
          peg$savedPos = s3;
          s3 = peg$f39(s1, s2, s4, s5);
        } else {
          peg$currPos = s3;
          s3 = peg$FAILED;
        }
        if (s3 !== peg$FAILED) {
          s4 = peg$parseRIGHT_PAREN();
          if (s4 !== peg$FAILED) {
            peg$savedPos = s0;
            s0 = peg$f40(s1, s2, s3, s4);
          } else {
            peg$currPos = s0;
            s0 = peg$FAILED;
          }
        } else {
          peg$currPos = s0;
          s0 = peg$FAILED;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parselayout_qualifier_id() {
    var s0, s1, s2, s3, s4;

    var key = peg$currPos * 305 + 268;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$parseIDENTIFIER();
    if (s1 !== peg$FAILED) {
      s2 = peg$currPos;
      s3 = peg$parseEQUAL();
      if (s3 !== peg$FAILED) {
        s4 = peg$parseternary_expression();
        if (s4 !== peg$FAILED) {
          s3 = [s3, s4];
          s2 = s3;
        } else {
          peg$currPos = s2;
          s2 = peg$FAILED;
        }
      } else {
        peg$currPos = s2;
        s2 = peg$FAILED;
      }
      if (s2 === peg$FAILED) {
        s2 = null;
      }
      peg$savedPos = s0;
      s0 = peg$f41(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }
    if (s0 === peg$FAILED) {
      s0 = peg$parseSHARED();
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsetype_qualifiers() {
    var s0, s1;

    var key = peg$currPos * 305 + 269;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = [];
    s1 = peg$parsesingle_type_qualifier();
    if (s1 !== peg$FAILED) {
      while (s1 !== peg$FAILED) {
        s0.push(s1);
        s1 = peg$parsesingle_type_qualifier();
      }
    } else {
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsesingle_type_qualifier() {
    var s0, s1;

    var key = peg$currPos * 305 + 270;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    peg$silentFails++;
    s0 = peg$parsestorage_qualifier();
    if (s0 === peg$FAILED) {
      s0 = peg$parselayout_qualifier();
      if (s0 === peg$FAILED) {
        s0 = peg$parseprecision_qualifier();
        if (s0 === peg$FAILED) {
          s0 = peg$parseinterpolation_qualifier();
          if (s0 === peg$FAILED) {
            s0 = peg$parseINVARIANT();
            if (s0 === peg$FAILED) {
              s0 = peg$parsePRECISE();
            }
          }
        }
      }
    }
    peg$silentFails--;
    if (s0 === peg$FAILED) {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e235); }
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseinterpolation_qualifier() {
    var s0, s1;

    var key = peg$currPos * 305 + 271;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    peg$silentFails++;
    s0 = peg$parseSMOOTH();
    if (s0 === peg$FAILED) {
      s0 = peg$parseFLAT();
      if (s0 === peg$FAILED) {
        s0 = peg$parseNOPERSPECTIVE();
      }
    }
    peg$silentFails--;
    if (s0 === peg$FAILED) {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e236); }
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsestorage_qualifier() {
    var s0, s1, s2, s3, s4, s5, s6, s7, s8;

    var key = peg$currPos * 305 + 272;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    peg$silentFails++;
    s0 = peg$parseCONST();
    if (s0 === peg$FAILED) {
      s0 = peg$parseINOUT();
      if (s0 === peg$FAILED) {
        s0 = peg$parseIN();
        if (s0 === peg$FAILED) {
          s0 = peg$parseOUT();
          if (s0 === peg$FAILED) {
            s0 = peg$parseCENTROID();
            if (s0 === peg$FAILED) {
              s0 = peg$parsePATCH();
              if (s0 === peg$FAILED) {
                s0 = peg$parseSAMPLE();
                if (s0 === peg$FAILED) {
                  s0 = peg$parseUNIFORM();
                  if (s0 === peg$FAILED) {
                    s0 = peg$parseBUFFER();
                    if (s0 === peg$FAILED) {
                      s0 = peg$parseSHARED();
                      if (s0 === peg$FAILED) {
                        s0 = peg$parseCOHERENT();
                        if (s0 === peg$FAILED) {
                          s0 = peg$parseVOLATILE();
                          if (s0 === peg$FAILED) {
                            s0 = peg$parseRESTRICT();
                            if (s0 === peg$FAILED) {
                              s0 = peg$parseREADONLY();
                              if (s0 === peg$FAILED) {
                                s0 = peg$parseWRITEONLY();
                                if (s0 === peg$FAILED) {
                                  s0 = peg$parseVARYING();
                                  if (s0 === peg$FAILED) {
                                    s0 = peg$parseATTRIBUTE();
                                    if (s0 === peg$FAILED) {
                                      s0 = peg$currPos;
                                      s1 = peg$parseSUBROUTINE();
                                      if (s1 !== peg$FAILED) {
                                        s2 = peg$currPos;
                                        s3 = peg$parseLEFT_PAREN();
                                        if (s3 !== peg$FAILED) {
                                          s4 = peg$parseTYPE_NAME();
                                          if (s4 !== peg$FAILED) {
                                            s5 = [];
                                            s6 = peg$currPos;
                                            s7 = peg$parseCOMMA();
                                            if (s7 !== peg$FAILED) {
                                              s8 = peg$parseTYPE_NAME();
                                              if (s8 !== peg$FAILED) {
                                                s7 = [s7, s8];
                                                s6 = s7;
                                              } else {
                                                peg$currPos = s6;
                                                s6 = peg$FAILED;
                                              }
                                            } else {
                                              peg$currPos = s6;
                                              s6 = peg$FAILED;
                                            }
                                            while (s6 !== peg$FAILED) {
                                              s5.push(s6);
                                              s6 = peg$currPos;
                                              s7 = peg$parseCOMMA();
                                              if (s7 !== peg$FAILED) {
                                                s8 = peg$parseTYPE_NAME();
                                                if (s8 !== peg$FAILED) {
                                                  s7 = [s7, s8];
                                                  s6 = s7;
                                                } else {
                                                  peg$currPos = s6;
                                                  s6 = peg$FAILED;
                                                }
                                              } else {
                                                peg$currPos = s6;
                                                s6 = peg$FAILED;
                                              }
                                            }
                                            s6 = peg$parseRIGHT_PAREN();
                                            if (s6 !== peg$FAILED) {
                                              peg$savedPos = s2;
                                              s2 = peg$f42(s1, s3, s4, s5, s6);
                                            } else {
                                              peg$currPos = s2;
                                              s2 = peg$FAILED;
                                            }
                                          } else {
                                            peg$currPos = s2;
                                            s2 = peg$FAILED;
                                          }
                                        } else {
                                          peg$currPos = s2;
                                          s2 = peg$FAILED;
                                        }
                                        if (s2 === peg$FAILED) {
                                          s2 = null;
                                        }
                                        peg$savedPos = s0;
                                        s0 = peg$f43(s1, s2);
                                      } else {
                                        peg$currPos = s0;
                                        s0 = peg$FAILED;
                                      }
                                    }
                                  }
                                }
                              }
                            }
                          }
                        }
                      }
                    }
                  }
                }
              }
            }
          }
        }
      }
    }
    peg$silentFails--;
    if (s0 === peg$FAILED) {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e237); }
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsetype_specifier() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 273;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    peg$silentFails++;
    s0 = peg$currPos;
    s1 = peg$parsetype_specifier_nonarray();
    if (s1 !== peg$FAILED) {
      s2 = peg$parsearray_specifier();
      if (s2 === peg$FAILED) {
        s2 = null;
      }
      peg$savedPos = s0;
      s0 = peg$f44(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }
    peg$silentFails--;
    if (s0 === peg$FAILED) {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e238); }
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsetype_specifier_nonarray() {
    var s0, s1;

    var key = peg$currPos * 305 + 274;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    peg$silentFails++;
    s0 = peg$parseVOID();
    if (s0 === peg$FAILED) {
      s0 = peg$parseFLOAT();
      if (s0 === peg$FAILED) {
        s0 = peg$parseDOUBLE();
        if (s0 === peg$FAILED) {
          s0 = peg$parseINT();
          if (s0 === peg$FAILED) {
            s0 = peg$parseUINT();
            if (s0 === peg$FAILED) {
              s0 = peg$parseBOOL();
              if (s0 === peg$FAILED) {
                s0 = peg$parseVEC2();
                if (s0 === peg$FAILED) {
                  s0 = peg$parseVEC3();
                  if (s0 === peg$FAILED) {
                    s0 = peg$parseVEC4();
                    if (s0 === peg$FAILED) {
                      s0 = peg$parseDVEC2();
                      if (s0 === peg$FAILED) {
                        s0 = peg$parseDVEC3();
                        if (s0 === peg$FAILED) {
                          s0 = peg$parseDVEC4();
                          if (s0 === peg$FAILED) {
                            s0 = peg$parseBVEC2();
                            if (s0 === peg$FAILED) {
                              s0 = peg$parseBVEC3();
                              if (s0 === peg$FAILED) {
                                s0 = peg$parseBVEC4();
                                if (s0 === peg$FAILED) {
                                  s0 = peg$parseIVEC2();
                                  if (s0 === peg$FAILED) {
                                    s0 = peg$parseIVEC3();
                                    if (s0 === peg$FAILED) {
                                      s0 = peg$parseIVEC4();
                                      if (s0 === peg$FAILED) {
                                        s0 = peg$parseUVEC2();
                                        if (s0 === peg$FAILED) {
                                          s0 = peg$parseUVEC3();
                                          if (s0 === peg$FAILED) {
                                            s0 = peg$parseUVEC4();
                                            if (s0 === peg$FAILED) {
                                              s0 = peg$parseMAT2();
                                              if (s0 === peg$FAILED) {
                                                s0 = peg$parseMAT3();
                                                if (s0 === peg$FAILED) {
                                                  s0 = peg$parseMAT4();
                                                  if (s0 === peg$FAILED) {
                                                    s0 = peg$parseMAT2X2();
                                                    if (s0 === peg$FAILED) {
                                                      s0 = peg$parseMAT2X3();
                                                      if (s0 === peg$FAILED) {
                                                        s0 = peg$parseMAT2X4();
                                                        if (s0 === peg$FAILED) {
                                                          s0 = peg$parseMAT3X2();
                                                          if (s0 === peg$FAILED) {
                                                            s0 = peg$parseMAT3X3();
                                                            if (s0 === peg$FAILED) {
                                                              s0 = peg$parseMAT3X4();
                                                              if (s0 === peg$FAILED) {
                                                                s0 = peg$parseMAT4X2();
                                                                if (s0 === peg$FAILED) {
                                                                  s0 = peg$parseMAT4X3();
                                                                  if (s0 === peg$FAILED) {
                                                                    s0 = peg$parseMAT4X4();
                                                                    if (s0 === peg$FAILED) {
                                                                      s0 = peg$parseDMAT2();
                                                                      if (s0 === peg$FAILED) {
                                                                        s0 = peg$parseDMAT3();
                                                                        if (s0 === peg$FAILED) {
                                                                          s0 = peg$parseDMAT4();
                                                                          if (s0 === peg$FAILED) {
                                                                            s0 = peg$parseDMAT2X2();
                                                                            if (s0 === peg$FAILED) {
                                                                              s0 = peg$parseDMAT2X3();
                                                                              if (s0 === peg$FAILED) {
                                                                                s0 = peg$parseDMAT2X4();
                                                                                if (s0 === peg$FAILED) {
                                                                                  s0 = peg$parseDMAT3X2();
                                                                                  if (s0 === peg$FAILED) {
                                                                                    s0 = peg$parseDMAT3X3();
                                                                                    if (s0 === peg$FAILED) {
                                                                                      s0 = peg$parseDMAT3X4();
                                                                                      if (s0 === peg$FAILED) {
                                                                                        s0 = peg$parseDMAT4X2();
                                                                                        if (s0 === peg$FAILED) {
                                                                                          s0 = peg$parseDMAT4X3();
                                                                                          if (s0 === peg$FAILED) {
                                                                                            s0 = peg$parseDMAT4X4();
                                                                                            if (s0 === peg$FAILED) {
                                                                                              s0 = peg$parseATOMIC_UINT();
                                                                                              if (s0 === peg$FAILED) {
                                                                                                s0 = peg$parseSAMPLER1D();
                                                                                                if (s0 === peg$FAILED) {
                                                                                                  s0 = peg$parseSAMPLER2D();
                                                                                                  if (s0 === peg$FAILED) {
                                                                                                    s0 = peg$parseSAMPLER3D();
                                                                                                    if (s0 === peg$FAILED) {
                                                                                                      s0 = peg$parseSAMPLERCUBE();
                                                                                                      if (s0 === peg$FAILED) {
                                                                                                        s0 = peg$parseSAMPLER1DSHADOW();
                                                                                                        if (s0 === peg$FAILED) {
                                                                                                          s0 = peg$parseSAMPLER2DSHADOW();
                                                                                                          if (s0 === peg$FAILED) {
                                                                                                            s0 = peg$parseSAMPLERCUBESHADOW();
                                                                                                            if (s0 === peg$FAILED) {
                                                                                                              s0 = peg$parseSAMPLER1DARRAY();
                                                                                                              if (s0 === peg$FAILED) {
                                                                                                                s0 = peg$parseSAMPLER2DARRAY();
                                                                                                                if (s0 === peg$FAILED) {
                                                                                                                  s0 = peg$parseSAMPLER1DARRAYSHADOW();
                                                                                                                  if (s0 === peg$FAILED) {
                                                                                                                    s0 = peg$parseSAMPLER2DARRAYSHADOW();
                                                                                                                    if (s0 === peg$FAILED) {
                                                                                                                      s0 = peg$parseSAMPLERCUBEARRAY();
                                                                                                                      if (s0 === peg$FAILED) {
                                                                                                                        s0 = peg$parseSAMPLERCUBEARRAYSHADOW();
                                                                                                                        if (s0 === peg$FAILED) {
                                                                                                                          s0 = peg$parseISAMPLER1D();
                                                                                                                          if (s0 === peg$FAILED) {
                                                                                                                            s0 = peg$parseISAMPLER2D();
                                                                                                                            if (s0 === peg$FAILED) {
                                                                                                                              s0 = peg$parseISAMPLER3D();
                                                                                                                              if (s0 === peg$FAILED) {
                                                                                                                                s0 = peg$parseISAMPLERCUBE();
                                                                                                                                if (s0 === peg$FAILED) {
                                                                                                                                  s0 = peg$parseISAMPLER1DARRAY();
                                                                                                                                  if (s0 === peg$FAILED) {
                                                                                                                                    s0 = peg$parseISAMPLER2DARRAY();
                                                                                                                                    if (s0 === peg$FAILED) {
                                                                                                                                      s0 = peg$parseISAMPLERCUBEARRAY();
                                                                                                                                      if (s0 === peg$FAILED) {
                                                                                                                                        s0 = peg$parseUSAMPLER1D();
                                                                                                                                        if (s0 === peg$FAILED) {
                                                                                                                                          s0 = peg$parseUSAMPLER2D();
                                                                                                                                          if (s0 === peg$FAILED) {
                                                                                                                                            s0 = peg$parseUSAMPLER3D();
                                                                                                                                            if (s0 === peg$FAILED) {
                                                                                                                                              s0 = peg$parseUSAMPLERCUBE();
                                                                                                                                              if (s0 === peg$FAILED) {
                                                                                                                                                s0 = peg$parseUSAMPLER1DARRAY();
                                                                                                                                                if (s0 === peg$FAILED) {
                                                                                                                                                  s0 = peg$parseUSAMPLER2DARRAY();
                                                                                                                                                  if (s0 === peg$FAILED) {
                                                                                                                                                    s0 = peg$parseUSAMPLERCUBEARRAY();
                                                                                                                                                    if (s0 === peg$FAILED) {
                                                                                                                                                      s0 = peg$parseSAMPLER2DRECT();
                                                                                                                                                      if (s0 === peg$FAILED) {
                                                                                                                                                        s0 = peg$parseSAMPLER2DRECTSHADOW();
                                                                                                                                                        if (s0 === peg$FAILED) {
                                                                                                                                                          s0 = peg$parseISAMPLER2DRECT();
                                                                                                                                                          if (s0 === peg$FAILED) {
                                                                                                                                                            s0 = peg$parseUSAMPLER2DRECT();
                                                                                                                                                            if (s0 === peg$FAILED) {
                                                                                                                                                              s0 = peg$parseSAMPLERBUFFER();
                                                                                                                                                              if (s0 === peg$FAILED) {
                                                                                                                                                                s0 = peg$parseISAMPLERBUFFER();
                                                                                                                                                                if (s0 === peg$FAILED) {
                                                                                                                                                                  s0 = peg$parseUSAMPLERBUFFER();
                                                                                                                                                                  if (s0 === peg$FAILED) {
                                                                                                                                                                    s0 = peg$parseSAMPLER2DMS();
                                                                                                                                                                    if (s0 === peg$FAILED) {
                                                                                                                                                                      s0 = peg$parseISAMPLER2DMS();
                                                                                                                                                                      if (s0 === peg$FAILED) {
                                                                                                                                                                        s0 = peg$parseUSAMPLER2DMS();
                                                                                                                                                                        if (s0 === peg$FAILED) {
                                                                                                                                                                          s0 = peg$parseSAMPLER2DMSARRAY();
                                                                                                                                                                          if (s0 === peg$FAILED) {
                                                                                                                                                                            s0 = peg$parseISAMPLER2DMSARRAY();
                                                                                                                                                                            if (s0 === peg$FAILED) {
                                                                                                                                                                              s0 = peg$parseUSAMPLER2DMSARRAY();
                                                                                                                                                                              if (s0 === peg$FAILED) {
                                                                                                                                                                                s0 = peg$parseIMAGE1D();
                                                                                                                                                                                if (s0 === peg$FAILED) {
                                                                                                                                                                                  s0 = peg$parseIIMAGE1D();
                                                                                                                                                                                  if (s0 === peg$FAILED) {
                                                                                                                                                                                    s0 = peg$parseUIMAGE1D();
                                                                                                                                                                                    if (s0 === peg$FAILED) {
                                                                                                                                                                                      s0 = peg$parseIMAGE2D();
                                                                                                                                                                                      if (s0 === peg$FAILED) {
                                                                                                                                                                                        s0 = peg$parseIIMAGE2D();
                                                                                                                                                                                        if (s0 === peg$FAILED) {
                                                                                                                                                                                          s0 = peg$parseUIMAGE2D();
                                                                                                                                                                                          if (s0 === peg$FAILED) {
                                                                                                                                                                                            s0 = peg$parseIMAGE3D();
                                                                                                                                                                                            if (s0 === peg$FAILED) {
                                                                                                                                                                                              s0 = peg$parseIIMAGE3D();
                                                                                                                                                                                              if (s0 === peg$FAILED) {
                                                                                                                                                                                                s0 = peg$parseUIMAGE3D();
                                                                                                                                                                                                if (s0 === peg$FAILED) {
                                                                                                                                                                                                  s0 = peg$parseIMAGE2DRECT();
                                                                                                                                                                                                  if (s0 === peg$FAILED) {
                                                                                                                                                                                                    s0 = peg$parseIIMAGE2DRECT();
                                                                                                                                                                                                    if (s0 === peg$FAILED) {
                                                                                                                                                                                                      s0 = peg$parseUIMAGE2DRECT();
                                                                                                                                                                                                      if (s0 === peg$FAILED) {
                                                                                                                                                                                                        s0 = peg$parseIMAGECUBE();
                                                                                                                                                                                                        if (s0 === peg$FAILED) {
                                                                                                                                                                                                          s0 = peg$parseIIMAGECUBE();
                                                                                                                                                                                                          if (s0 === peg$FAILED) {
                                                                                                                                                                                                            s0 = peg$parseUIMAGECUBE();
                                                                                                                                                                                                            if (s0 === peg$FAILED) {
                                                                                                                                                                                                              s0 = peg$parseIMAGEBUFFER();
                                                                                                                                                                                                              if (s0 === peg$FAILED) {
                                                                                                                                                                                                                s0 = peg$parseIIMAGEBUFFER();
                                                                                                                                                                                                                if (s0 === peg$FAILED) {
                                                                                                                                                                                                                  s0 = peg$parseUIMAGEBUFFER();
                                                                                                                                                                                                                  if (s0 === peg$FAILED) {
                                                                                                                                                                                                                    s0 = peg$parseIMAGE1DARRAY();
                                                                                                                                                                                                                    if (s0 === peg$FAILED) {
                                                                                                                                                                                                                      s0 = peg$parseIIMAGE1DARRAY();
                                                                                                                                                                                                                      if (s0 === peg$FAILED) {
                                                                                                                                                                                                                        s0 = peg$parseUIMAGE1DARRAY();
                                                                                                                                                                                                                        if (s0 === peg$FAILED) {
                                                                                                                                                                                                                          s0 = peg$parseIMAGE2DARRAY();
                                                                                                                                                                                                                          if (s0 === peg$FAILED) {
                                                                                                                                                                                                                            s0 = peg$parseIIMAGE2DARRAY();
                                                                                                                                                                                                                            if (s0 === peg$FAILED) {
                                                                                                                                                                                                                              s0 = peg$parseUIMAGE2DARRAY();
                                                                                                                                                                                                                              if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                s0 = peg$parseIMAGECUBEARRAY();
                                                                                                                                                                                                                                if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                  s0 = peg$parseIIMAGECUBEARRAY();
                                                                                                                                                                                                                                  if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                    s0 = peg$parseUIMAGECUBEARRAY();
                                                                                                                                                                                                                                    if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                      s0 = peg$parseIMAGE2DMS();
                                                                                                                                                                                                                                      if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                        s0 = peg$parseIIMAGE2DMS();
                                                                                                                                                                                                                                        if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                          s0 = peg$parseUIMAGE2DMS();
                                                                                                                                                                                                                                          if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                            s0 = peg$parseIMAGE2DMSARRAY();
                                                                                                                                                                                                                                            if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                              s0 = peg$parseIIMAGE2DMSARRAY();
                                                                                                                                                                                                                                              if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                                s0 = peg$parseUIMAGE2DMSARRAY();
                                                                                                                                                                                                                                                if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                                  s0 = peg$parsestruct_specifier();
                                                                                                                                                                                                                                                  if (s0 === peg$FAILED) {
                                                                                                                                                                                                                                                    s0 = peg$parseTYPE_NAME();
                                                                                                                                                                                                                                                  }
                                                                                                                                                                                                                                                }
                                                                                                                                                                                                                                              }
                                                                                                                                                                                                                                            }
                                                                                                                                                                                                                                          }
                                                                                                                                                                                                                                        }
                                                                                                                                                                                                                                      }
                                                                                                                                                                                                                                    }
                                                                                                                                                                                                                                  }
                                                                                                                                                                                                                                }
                                                                                                                                                                                                                              }
                                                                                                                                                                                                                            }
                                                                                                                                                                                                                          }
                                                                                                                                                                                                                        }
                                                                                                                                                                                                                      }
                                                                                                                                                                                                                    }
                                                                                                                                                                                                                  }
                                                                                                                                                                                                                }
                                                                                                                                                                                                              }
                                                                                                                                                                                                            }
                                                                                                                                                                                                          }
                                                                                                                                                                                                        }
                                                                                                                                                                                                      }
                                                                                                                                                                                                    }
                                                                                                                                                                                                  }
                                                                                                                                                                                                }
                                                                                                                                                                                              }
                                                                                                                                                                                            }
                                                                                                                                                                                          }
                                                                                                                                                                                        }
                                                                                                                                                                                      }
                                                                                                                                                                                    }
                                                                                                                                                                                  }
                                                                                                                                                                                }
                                                                                                                                                                              }
                                                                                                                                                                            }
                                                                                                                                                                          }
                                                                                                                                                                        }
                                                                                                                                                                      }
                                                                                                                                                                    }
                                                                                                                                                                  }
                                                                                                                                                                }
                                                                                                                                                              }
                                                                                                                                                            }
                                                                                                                                                          }
                                                                                                                                                        }
                                                                                                                                                      }
                                                                                                                                                    }
                                                                                                                                                  }
                                                                                                                                                }
                                                                                                                                              }
                                                                                                                                            }
                                                                                                                                          }
                                                                                                                                        }
                                                                                                                                      }
                                                                                                                                    }
                                                                                                                                  }
                                                                                                                                }
                                                                                                                              }
                                                                                                                            }
                                                                                                                          }
                                                                                                                        }
                                                                                                                      }
                                                                                                                    }
                                                                                                                  }
                                                                                                                }
                                                                                                              }
                                                                                                            }
                                                                                                          }
                                                                                                        }
                                                                                                      }
                                                                                                    }
                                                                                                  }
                                                                                                }
                                                                                              }
                                                                                            }
                                                                                          }
                                                                                        }
                                                                                      }
                                                                                    }
                                                                                  }
                                                                                }
                                                                              }
                                                                            }
                                                                          }
                                                                        }
                                                                      }
                                                                    }
                                                                  }
                                                                }
                                                              }
                                                            }
                                                          }
                                                        }
                                                      }
                                                    }
                                                  }
                                                }
                                              }
                                            }
                                          }
                                        }
                                      }
                                    }
                                  }
                                }
                              }
                            }
                          }
                        }
                      }
                    }
                  }
                }
              }
            }
          }
        }
      }
    }
    peg$silentFails--;
    if (s0 === peg$FAILED) {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e238); }
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsearray_specifier() {
    var s0, s1, s2, s3, s4, s5;

    var key = peg$currPos * 305 + 275;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    peg$silentFails++;
    s0 = peg$currPos;
    s1 = [];
    s2 = peg$currPos;
    s3 = peg$parseLEFT_BRACKET();
    if (s3 !== peg$FAILED) {
      s4 = peg$parseternary_expression();
      if (s4 === peg$FAILED) {
        s4 = null;
      }
      s5 = peg$parseRIGHT_BRACKET();
      if (s5 !== peg$FAILED) {
        peg$savedPos = s2;
        s2 = peg$f45(s3, s4, s5);
      } else {
        peg$currPos = s2;
        s2 = peg$FAILED;
      }
    } else {
      peg$currPos = s2;
      s2 = peg$FAILED;
    }
    if (s2 !== peg$FAILED) {
      while (s2 !== peg$FAILED) {
        s1.push(s2);
        s2 = peg$currPos;
        s3 = peg$parseLEFT_BRACKET();
        if (s3 !== peg$FAILED) {
          s4 = peg$parseternary_expression();
          if (s4 === peg$FAILED) {
            s4 = null;
          }
          s5 = peg$parseRIGHT_BRACKET();
          if (s5 !== peg$FAILED) {
            peg$savedPos = s2;
            s2 = peg$f45(s3, s4, s5);
          } else {
            peg$currPos = s2;
            s2 = peg$FAILED;
          }
        } else {
          peg$currPos = s2;
          s2 = peg$FAILED;
        }
      }
    } else {
      s1 = peg$FAILED;
    }
    if (s1 !== peg$FAILED) {
      peg$savedPos = s0;
      s1 = peg$f46(s1);
    }
    s0 = s1;
    peg$silentFails--;
    if (s0 === peg$FAILED) {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e239); }
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseprecision_qualifier() {
    var s0, s1;

    var key = peg$currPos * 305 + 276;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    peg$silentFails++;
    s0 = peg$parseHIGH_PRECISION();
    if (s0 === peg$FAILED) {
      s0 = peg$parseMEDIUM_PRECISION();
      if (s0 === peg$FAILED) {
        s0 = peg$parseLOW_PRECISION();
      }
    }
    peg$silentFails--;
    if (s0 === peg$FAILED) {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e240); }
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsestruct_specifier() {
    var s0, s1, s2, s3, s4, s5;

    var key = peg$currPos * 305 + 277;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    peg$silentFails++;
    s0 = peg$currPos;
    s1 = peg$parseSTRUCT();
    if (s1 !== peg$FAILED) {
      s2 = peg$parseIDENTIFIER();
      if (s2 === peg$FAILED) {
        s2 = null;
      }
      s3 = peg$parseLEFT_BRACE();
      if (s3 !== peg$FAILED) {
        s4 = peg$parsestruct_declaration_list();
        if (s4 !== peg$FAILED) {
          s5 = peg$parseRIGHT_BRACE();
          if (s5 !== peg$FAILED) {
            peg$savedPos = s0;
            s0 = peg$f47(s1, s2, s3, s4, s5);
          } else {
            peg$currPos = s0;
            s0 = peg$FAILED;
          }
        } else {
          peg$currPos = s0;
          s0 = peg$FAILED;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }
    peg$silentFails--;
    if (s0 === peg$FAILED) {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e241); }
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsestruct_declaration_list() {
    var s0, s1, s2, s3;

    var key = peg$currPos * 305 + 278;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = [];
    s1 = peg$currPos;
    s2 = peg$parsestruct_declaration();
    if (s2 !== peg$FAILED) {
      s3 = peg$parseSEMICOLON();
      if (s3 !== peg$FAILED) {
        peg$savedPos = s1;
        s1 = peg$f48(s2, s3);
      } else {
        peg$currPos = s1;
        s1 = peg$FAILED;
      }
    } else {
      peg$currPos = s1;
      s1 = peg$FAILED;
    }
    if (s1 !== peg$FAILED) {
      while (s1 !== peg$FAILED) {
        s0.push(s1);
        s1 = peg$currPos;
        s2 = peg$parsestruct_declaration();
        if (s2 !== peg$FAILED) {
          s3 = peg$parseSEMICOLON();
          if (s3 !== peg$FAILED) {
            peg$savedPos = s1;
            s1 = peg$f48(s2, s3);
          } else {
            peg$currPos = s1;
            s1 = peg$FAILED;
          }
        } else {
          peg$currPos = s1;
          s1 = peg$FAILED;
        }
      }
    } else {
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsestruct_declaration() {
    var s0, s1, s2, s3, s4, s5, s6;

    var key = peg$currPos * 305 + 279;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$parsefully_specified_type();
    if (s1 !== peg$FAILED) {
      s2 = peg$parsequantified_identifier();
      if (s2 !== peg$FAILED) {
        s3 = [];
        s4 = peg$currPos;
        s5 = peg$parseCOMMA();
        if (s5 !== peg$FAILED) {
          s6 = peg$parsequantified_identifier();
          if (s6 !== peg$FAILED) {
            s5 = [s5, s6];
            s4 = s5;
          } else {
            peg$currPos = s4;
            s4 = peg$FAILED;
          }
        } else {
          peg$currPos = s4;
          s4 = peg$FAILED;
        }
        while (s4 !== peg$FAILED) {
          s3.push(s4);
          s4 = peg$currPos;
          s5 = peg$parseCOMMA();
          if (s5 !== peg$FAILED) {
            s6 = peg$parsequantified_identifier();
            if (s6 !== peg$FAILED) {
              s5 = [s5, s6];
              s4 = s5;
            } else {
              peg$currPos = s4;
              s4 = peg$FAILED;
            }
          } else {
            peg$currPos = s4;
            s4 = peg$FAILED;
          }
        }
        peg$savedPos = s0;
        s0 = peg$f49(s1, s2, s3);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsequantified_identifier() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 280;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$parseIDENTIFIER();
    if (s1 !== peg$FAILED) {
      s2 = peg$parsearray_specifier();
      if (s2 === peg$FAILED) {
        s2 = null;
      }
      peg$savedPos = s0;
      s0 = peg$f50(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseinitializer() {
    var s0, s1, s2, s3, s4, s5, s6;

    var key = peg$currPos * 305 + 281;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$parseassignment_expression();
    if (s0 === peg$FAILED) {
      s0 = peg$currPos;
      s1 = peg$parseLEFT_BRACE();
      if (s1 !== peg$FAILED) {
        s2 = peg$parseinitializer();
        if (s2 !== peg$FAILED) {
          s3 = [];
          s4 = peg$currPos;
          s5 = peg$parseCOMMA();
          if (s5 !== peg$FAILED) {
            s6 = peg$parseinitializer();
            if (s6 !== peg$FAILED) {
              s5 = [s5, s6];
              s4 = s5;
            } else {
              peg$currPos = s4;
              s4 = peg$FAILED;
            }
          } else {
            peg$currPos = s4;
            s4 = peg$FAILED;
          }
          while (s4 !== peg$FAILED) {
            s3.push(s4);
            s4 = peg$currPos;
            s5 = peg$parseCOMMA();
            if (s5 !== peg$FAILED) {
              s6 = peg$parseinitializer();
              if (s6 !== peg$FAILED) {
                s5 = [s5, s6];
                s4 = s5;
              } else {
                peg$currPos = s4;
                s4 = peg$FAILED;
              }
            } else {
              peg$currPos = s4;
              s4 = peg$FAILED;
            }
          }
          s4 = peg$parseCOMMA();
          if (s4 === peg$FAILED) {
            s4 = null;
          }
          s5 = peg$parseRIGHT_BRACE();
          if (s5 !== peg$FAILED) {
            peg$savedPos = s0;
            s0 = peg$f51(s1, s2, s3, s4, s5);
          } else {
            peg$currPos = s0;
            s0 = peg$FAILED;
          }
        } else {
          peg$currPos = s0;
          s0 = peg$FAILED;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsestatement() {
    var s0;

    var key = peg$currPos * 305 + 282;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$parsecompound_statement();
    if (s0 === peg$FAILED) {
      s0 = peg$parsesimple_statement();
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsesimple_statement() {
    var s0;

    var key = peg$currPos * 305 + 283;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$parsejump_statement();
    if (s0 === peg$FAILED) {
      s0 = peg$parsedeclaration_statement();
      if (s0 === peg$FAILED) {
        s0 = peg$parseexpression_statement();
        if (s0 === peg$FAILED) {
          s0 = peg$parseif_statement();
          if (s0 === peg$FAILED) {
            s0 = peg$parseswitch_statement();
            if (s0 === peg$FAILED) {
              s0 = peg$parsecase_label();
              if (s0 === peg$FAILED) {
                s0 = peg$parseiteration_statement();
              }
            }
          }
        }
      }
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsecompound_statement() {
    var s0, s1, s2, s3;

    var key = peg$currPos * 305 + 284;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$currPos;
    s2 = peg$parseLEFT_BRACE();
    if (s2 !== peg$FAILED) {
      peg$savedPos = s1;
      s2 = peg$f52(s2);
    }
    s1 = s2;
    if (s1 !== peg$FAILED) {
      s2 = peg$parsestatement_list();
      if (s2 === peg$FAILED) {
        s2 = null;
      }
      s3 = peg$parseRIGHT_BRACE();
      if (s3 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f53(s1, s2, s3);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsecompound_statement_no_new_scope() {
    var s0, s1, s2, s3;

    var key = peg$currPos * 305 + 285;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$parseLEFT_BRACE();
    if (s1 !== peg$FAILED) {
      s2 = peg$parsestatement_list();
      if (s2 === peg$FAILED) {
        s2 = null;
      }
      s3 = peg$parseRIGHT_BRACE();
      if (s3 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f54(s1, s2, s3);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsestatement_no_new_scope() {
    var s0;

    var key = peg$currPos * 305 + 286;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$parsecompound_statement_no_new_scope();
    if (s0 === peg$FAILED) {
      s0 = peg$parsesimple_statement();
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsestatement_list() {
    var s0, s1;

    var key = peg$currPos * 305 + 287;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = [];
    s1 = peg$parsestatement();
    if (s1 === peg$FAILED) {
      s1 = peg$parsepreprocessor();
    }
    if (s1 !== peg$FAILED) {
      while (s1 !== peg$FAILED) {
        s0.push(s1);
        s1 = peg$parsestatement();
        if (s1 === peg$FAILED) {
          s1 = peg$parsepreprocessor();
        }
      }
    } else {
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseexpression_statement() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 288;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$parseexpression();
    if (s1 === peg$FAILED) {
      s1 = null;
    }
    s2 = peg$parseSEMICOLON();
    if (s2 !== peg$FAILED) {
      peg$savedPos = s0;
      s0 = peg$f55(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseif_statement() {
    var s0, s1, s2, s3, s4, s5, s6, s7, s8, s9;

    var key = peg$currPos * 305 + 289;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$parseIF();
    if (s1 !== peg$FAILED) {
      s2 = peg$parseLEFT_PAREN();
      if (s2 !== peg$FAILED) {
        s3 = peg$parseexpression();
        if (s3 !== peg$FAILED) {
          s4 = peg$parseRIGHT_PAREN();
          if (s4 !== peg$FAILED) {
            s5 = peg$currPos;
            s6 = peg$parsestatement();
            if (s6 !== peg$FAILED) {
              s7 = peg$currPos;
              s8 = peg$parseELSE();
              if (s8 !== peg$FAILED) {
                s9 = peg$parsestatement();
                if (s9 !== peg$FAILED) {
                  s8 = [s8, s9];
                  s7 = s8;
                } else {
                  peg$currPos = s7;
                  s7 = peg$FAILED;
                }
              } else {
                peg$currPos = s7;
                s7 = peg$FAILED;
              }
              if (s7 === peg$FAILED) {
                s7 = null;
              }
              s6 = [s6, s7];
              s5 = s6;
            } else {
              peg$currPos = s5;
              s5 = peg$FAILED;
            }
            if (s5 !== peg$FAILED) {
              peg$savedPos = s0;
              s0 = peg$f56(s1, s2, s3, s4, s5);
            } else {
              peg$currPos = s0;
              s0 = peg$FAILED;
            }
          } else {
            peg$currPos = s0;
            s0 = peg$FAILED;
          }
        } else {
          peg$currPos = s0;
          s0 = peg$FAILED;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseswitch_statement() {
    var s0, s1, s2, s3, s4, s5, s6, s7;

    var key = peg$currPos * 305 + 290;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$parseSWITCH();
    if (s1 !== peg$FAILED) {
      s2 = peg$parseLEFT_PAREN();
      if (s2 !== peg$FAILED) {
        s3 = peg$parseexpression();
        if (s3 !== peg$FAILED) {
          s4 = peg$parseRIGHT_PAREN();
          if (s4 !== peg$FAILED) {
            s5 = peg$parseLEFT_BRACE();
            if (s5 !== peg$FAILED) {
              s6 = peg$parsestatement_list();
              if (s6 !== peg$FAILED) {
                s7 = peg$parseRIGHT_BRACE();
                if (s7 !== peg$FAILED) {
                  peg$savedPos = s0;
                  s0 = peg$f57(s1, s2, s3, s4, s5, s6, s7);
                } else {
                  peg$currPos = s0;
                  s0 = peg$FAILED;
                }
              } else {
                peg$currPos = s0;
                s0 = peg$FAILED;
              }
            } else {
              peg$currPos = s0;
              s0 = peg$FAILED;
            }
          } else {
            peg$currPos = s0;
            s0 = peg$FAILED;
          }
        } else {
          peg$currPos = s0;
          s0 = peg$FAILED;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsecase_label() {
    var s0, s1, s2, s3;

    var key = peg$currPos * 305 + 291;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$parseCASE();
    if (s1 !== peg$FAILED) {
      s2 = peg$parseexpression();
      if (s2 !== peg$FAILED) {
        s3 = peg$parseCOLON();
        if (s3 !== peg$FAILED) {
          peg$savedPos = s0;
          s0 = peg$f58(s1, s2, s3);
        } else {
          peg$currPos = s0;
          s0 = peg$FAILED;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }
    if (s0 === peg$FAILED) {
      s0 = peg$currPos;
      s1 = peg$parseDEFAULT();
      if (s1 !== peg$FAILED) {
        s2 = peg$parseCOLON();
        if (s2 !== peg$FAILED) {
          peg$savedPos = s0;
          s0 = peg$f59(s1, s2);
        } else {
          peg$currPos = s0;
          s0 = peg$FAILED;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseiteration_statement() {
    var s0, s1, s2, s3, s4, s5, s6, s7, s8;

    var key = peg$currPos * 305 + 292;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    peg$silentFails++;
    s0 = peg$currPos;
    s1 = peg$currPos;
    s2 = peg$parseWHILE();
    if (s2 !== peg$FAILED) {
      peg$savedPos = s1;
      s2 = peg$f60(s2);
    }
    s1 = s2;
    if (s1 !== peg$FAILED) {
      s2 = peg$parseLEFT_PAREN();
      if (s2 !== peg$FAILED) {
        s3 = peg$parsecondition();
        if (s3 !== peg$FAILED) {
          s4 = peg$parseRIGHT_PAREN();
          if (s4 !== peg$FAILED) {
            s5 = peg$parsestatement_no_new_scope();
            if (s5 !== peg$FAILED) {
              peg$savedPos = s0;
              s0 = peg$f61(s1, s2, s3, s4, s5);
            } else {
              peg$currPos = s0;
              s0 = peg$FAILED;
            }
          } else {
            peg$currPos = s0;
            s0 = peg$FAILED;
          }
        } else {
          peg$currPos = s0;
          s0 = peg$FAILED;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }
    if (s0 === peg$FAILED) {
      s0 = peg$currPos;
      s1 = peg$parseDO();
      if (s1 !== peg$FAILED) {
        s2 = peg$parsestatement();
        if (s2 !== peg$FAILED) {
          s3 = peg$parseWHILE();
          if (s3 !== peg$FAILED) {
            s4 = peg$parseLEFT_PAREN();
            if (s4 !== peg$FAILED) {
              s5 = peg$parseexpression();
              if (s5 !== peg$FAILED) {
                s6 = peg$parseRIGHT_PAREN();
                if (s6 !== peg$FAILED) {
                  s7 = peg$parseSEMICOLON();
                  if (s7 !== peg$FAILED) {
                    peg$savedPos = s0;
                    s0 = peg$f62(s1, s2, s3, s4, s5, s6, s7);
                  } else {
                    peg$currPos = s0;
                    s0 = peg$FAILED;
                  }
                } else {
                  peg$currPos = s0;
                  s0 = peg$FAILED;
                }
              } else {
                peg$currPos = s0;
                s0 = peg$FAILED;
              }
            } else {
              peg$currPos = s0;
              s0 = peg$FAILED;
            }
          } else {
            peg$currPos = s0;
            s0 = peg$FAILED;
          }
        } else {
          peg$currPos = s0;
          s0 = peg$FAILED;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
      if (s0 === peg$FAILED) {
        s0 = peg$currPos;
        s1 = peg$currPos;
        s2 = peg$parseFOR();
        if (s2 !== peg$FAILED) {
          peg$savedPos = s1;
          s2 = peg$f63(s2);
        }
        s1 = s2;
        if (s1 !== peg$FAILED) {
          s2 = peg$parseLEFT_PAREN();
          if (s2 !== peg$FAILED) {
            s3 = peg$parseexpression_statement();
            if (s3 === peg$FAILED) {
              s3 = peg$parsedeclaration_statement();
            }
            if (s3 === peg$FAILED) {
              s3 = null;
            }
            s4 = peg$parsecondition();
            if (s4 === peg$FAILED) {
              s4 = null;
            }
            s5 = peg$parseSEMICOLON();
            if (s5 !== peg$FAILED) {
              s6 = peg$parseexpression();
              if (s6 === peg$FAILED) {
                s6 = null;
              }
              s7 = peg$parseRIGHT_PAREN();
              if (s7 !== peg$FAILED) {
                s8 = peg$parsestatement_no_new_scope();
                if (s8 !== peg$FAILED) {
                  peg$savedPos = s0;
                  s0 = peg$f64(s1, s2, s3, s4, s5, s6, s7, s8);
                } else {
                  peg$currPos = s0;
                  s0 = peg$FAILED;
                }
              } else {
                peg$currPos = s0;
                s0 = peg$FAILED;
              }
            } else {
              peg$currPos = s0;
              s0 = peg$FAILED;
            }
          } else {
            peg$currPos = s0;
            s0 = peg$FAILED;
          }
        } else {
          peg$currPos = s0;
          s0 = peg$FAILED;
        }
      }
    }
    peg$silentFails--;
    if (s0 === peg$FAILED) {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e242); }
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsecondition() {
    var s0, s1, s2, s3, s4;

    var key = peg$currPos * 305 + 293;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$parsefully_specified_type();
    if (s1 !== peg$FAILED) {
      s2 = peg$parseIDENTIFIER();
      if (s2 !== peg$FAILED) {
        s3 = peg$parseEQUAL();
        if (s3 !== peg$FAILED) {
          s4 = peg$parseinitializer();
          if (s4 !== peg$FAILED) {
            peg$savedPos = s0;
            s0 = peg$f65(s1, s2, s3, s4);
          } else {
            peg$currPos = s0;
            s0 = peg$FAILED;
          }
        } else {
          peg$currPos = s0;
          s0 = peg$FAILED;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }
    if (s0 === peg$FAILED) {
      s0 = peg$parseexpression();
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsejump_statement() {
    var s0, s1, s2, s3;

    var key = peg$currPos * 305 + 294;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    peg$silentFails++;
    s0 = peg$currPos;
    s1 = peg$parseCONTINUE();
    if (s1 !== peg$FAILED) {
      s2 = peg$parseSEMICOLON();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f66(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }
    if (s0 === peg$FAILED) {
      s0 = peg$currPos;
      s1 = peg$parseBREAK();
      if (s1 !== peg$FAILED) {
        s2 = peg$parseSEMICOLON();
        if (s2 !== peg$FAILED) {
          peg$savedPos = s0;
          s0 = peg$f67(s1, s2);
        } else {
          peg$currPos = s0;
          s0 = peg$FAILED;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
      if (s0 === peg$FAILED) {
        s0 = peg$currPos;
        s1 = peg$parseRETURN();
        if (s1 !== peg$FAILED) {
          s2 = peg$parseexpression();
          if (s2 === peg$FAILED) {
            s2 = null;
          }
          s3 = peg$parseSEMICOLON();
          if (s3 !== peg$FAILED) {
            peg$savedPos = s0;
            s0 = peg$f68(s1, s2, s3);
          } else {
            peg$currPos = s0;
            s0 = peg$FAILED;
          }
        } else {
          peg$currPos = s0;
          s0 = peg$FAILED;
        }
        if (s0 === peg$FAILED) {
          s0 = peg$currPos;
          s1 = peg$parseDISCARD();
          if (s1 !== peg$FAILED) {
            s2 = peg$parseSEMICOLON();
            if (s2 !== peg$FAILED) {
              peg$savedPos = s0;
              s0 = peg$f69(s1, s2);
            } else {
              peg$currPos = s0;
              s0 = peg$FAILED;
            }
          } else {
            peg$currPos = s0;
            s0 = peg$FAILED;
          }
        }
      }
    }
    peg$silentFails--;
    if (s0 === peg$FAILED) {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e243); }
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsepreprocessor() {
    var s0, s1, s2, s3, s4, s5;

    var key = peg$currPos * 305 + 295;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    peg$silentFails++;
    s0 = peg$currPos;
    s1 = peg$currPos;
    s2 = peg$currPos;
    if (input.charCodeAt(peg$currPos) === 35) {
      s3 = peg$c210;
      peg$currPos++;
    } else {
      s3 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e245); }
    }
    if (s3 !== peg$FAILED) {
      s4 = [];
      if (peg$r11.test(input.charAt(peg$currPos))) {
        s5 = input.charAt(peg$currPos);
        peg$currPos++;
      } else {
        s5 = peg$FAILED;
        if (peg$silentFails === 0) { peg$fail(peg$e246); }
      }
      while (s5 !== peg$FAILED) {
        s4.push(s5);
        if (peg$r11.test(input.charAt(peg$currPos))) {
          s5 = input.charAt(peg$currPos);
          peg$currPos++;
        } else {
          s5 = peg$FAILED;
          if (peg$silentFails === 0) { peg$fail(peg$e246); }
        }
      }
      s3 = [s3, s4];
      s2 = s3;
    } else {
      peg$currPos = s2;
      s2 = peg$FAILED;
    }
    if (s2 !== peg$FAILED) {
      s1 = input.substring(s1, peg$currPos);
    } else {
      s1 = s2;
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f70(s1, s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }
    peg$silentFails--;
    if (s0 === peg$FAILED) {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e244); }
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsetranslation_unit() {
    var s0, s1;

    var key = peg$currPos * 305 + 296;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = [];
    s1 = peg$parseexternal_declaration();
    if (s1 === peg$FAILED) {
      s1 = peg$parsepreprocessor();
    }
    if (s1 !== peg$FAILED) {
      while (s1 !== peg$FAILED) {
        s0.push(s1);
        s1 = peg$parseexternal_declaration();
        if (s1 === peg$FAILED) {
          s1 = peg$parsepreprocessor();
        }
      }
    } else {
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseexternal_declaration() {
    var s0;

    var key = peg$currPos * 305 + 297;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$parsefunction_definition();
    if (s0 === peg$FAILED) {
      s0 = peg$parsedeclaration_statement();
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsefunction_definition() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 298;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$parsefunction_prototype();
    if (s1 !== peg$FAILED) {
      s2 = peg$parsecompound_statement_no_new_scope();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s0 = peg$f71(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parse_() {
    var s0, s1, s2, s3, s4, s5;

    var key = peg$currPos * 305 + 299;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    peg$silentFails++;
    s0 = peg$currPos;
    s1 = peg$parsewhitespace();
    if (s1 === peg$FAILED) {
      s1 = null;
    }
    s2 = [];
    s3 = peg$currPos;
    s4 = peg$parsecomment();
    if (s4 !== peg$FAILED) {
      s5 = peg$parsewhitespace();
      if (s5 === peg$FAILED) {
        s5 = null;
      }
      s4 = [s4, s5];
      s3 = s4;
    } else {
      peg$currPos = s3;
      s3 = peg$FAILED;
    }
    while (s3 !== peg$FAILED) {
      s2.push(s3);
      s3 = peg$currPos;
      s4 = peg$parsecomment();
      if (s4 !== peg$FAILED) {
        s5 = peg$parsewhitespace();
        if (s5 === peg$FAILED) {
          s5 = null;
        }
        s4 = [s4, s5];
        s3 = s4;
      } else {
        peg$currPos = s3;
        s3 = peg$FAILED;
      }
    }
    peg$savedPos = s0;
    s0 = peg$f72(s1, s2);
    peg$silentFails--;
    s1 = peg$FAILED;
    if (peg$silentFails === 0) { peg$fail(peg$e247); }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsecomment() {
    var s0, s1, s2, s3, s4, s5;

    var key = peg$currPos * 305 + 300;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$parsesingle_comment();
    if (s0 === peg$FAILED) {
      s0 = peg$currPos;
      s1 = peg$parsemultiline_comment();
      if (s1 !== peg$FAILED) {
        s2 = [];
        s3 = peg$currPos;
        s4 = peg$parsewhitespace();
        if (s4 !== peg$FAILED) {
          s5 = peg$parsecomment();
          if (s5 !== peg$FAILED) {
            peg$savedPos = s3;
            s3 = peg$f73(s1, s4, s5);
          } else {
            peg$currPos = s3;
            s3 = peg$FAILED;
          }
        } else {
          peg$currPos = s3;
          s3 = peg$FAILED;
        }
        while (s3 !== peg$FAILED) {
          s2.push(s3);
          s3 = peg$currPos;
          s4 = peg$parsewhitespace();
          if (s4 !== peg$FAILED) {
            s5 = peg$parsecomment();
            if (s5 !== peg$FAILED) {
              peg$savedPos = s3;
              s3 = peg$f73(s1, s4, s5);
            } else {
              peg$currPos = s3;
              s3 = peg$FAILED;
            }
          } else {
            peg$currPos = s3;
            s3 = peg$FAILED;
          }
        }
        peg$savedPos = s0;
        s0 = peg$f74(s1, s2);
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsesingle_comment() {
    var s0, s1, s2, s3, s4;

    var key = peg$currPos * 305 + 301;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$currPos;
    if (input.substr(peg$currPos, 2) === peg$c211) {
      s2 = peg$c211;
      peg$currPos += 2;
    } else {
      s2 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e248); }
    }
    if (s2 !== peg$FAILED) {
      s3 = [];
      if (peg$r11.test(input.charAt(peg$currPos))) {
        s4 = input.charAt(peg$currPos);
        peg$currPos++;
      } else {
        s4 = peg$FAILED;
        if (peg$silentFails === 0) { peg$fail(peg$e246); }
      }
      while (s4 !== peg$FAILED) {
        s3.push(s4);
        if (peg$r11.test(input.charAt(peg$currPos))) {
          s4 = input.charAt(peg$currPos);
          peg$currPos++;
        } else {
          s4 = peg$FAILED;
          if (peg$silentFails === 0) { peg$fail(peg$e246); }
        }
      }
      s2 = [s2, s3];
      s1 = s2;
    } else {
      peg$currPos = s1;
      s1 = peg$FAILED;
    }
    if (s1 !== peg$FAILED) {
      s0 = input.substring(s0, peg$currPos);
    } else {
      s0 = s1;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsemultiline_comment() {
    var s0, s1, s2, s3, s4, s5, s6;

    var key = peg$currPos * 305 + 302;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$currPos;
    if (input.substr(peg$currPos, 2) === peg$c212) {
      s2 = peg$c212;
      peg$currPos += 2;
    } else {
      s2 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e249); }
    }
    if (s2 !== peg$FAILED) {
      s3 = [];
      s4 = peg$currPos;
      s5 = peg$currPos;
      peg$silentFails++;
      if (input.substr(peg$currPos, 2) === peg$c213) {
        s6 = peg$c213;
        peg$currPos += 2;
      } else {
        s6 = peg$FAILED;
        if (peg$silentFails === 0) { peg$fail(peg$e250); }
      }
      peg$silentFails--;
      if (s6 === peg$FAILED) {
        s5 = undefined;
      } else {
        peg$currPos = s5;
        s5 = peg$FAILED;
      }
      if (s5 !== peg$FAILED) {
        if (input.length > peg$currPos) {
          s6 = input.charAt(peg$currPos);
          peg$currPos++;
        } else {
          s6 = peg$FAILED;
          if (peg$silentFails === 0) { peg$fail(peg$e251); }
        }
        if (s6 !== peg$FAILED) {
          peg$savedPos = s4;
          s4 = peg$f75(s6);
        } else {
          peg$currPos = s4;
          s4 = peg$FAILED;
        }
      } else {
        peg$currPos = s4;
        s4 = peg$FAILED;
      }
      while (s4 !== peg$FAILED) {
        s3.push(s4);
        s4 = peg$currPos;
        s5 = peg$currPos;
        peg$silentFails++;
        if (input.substr(peg$currPos, 2) === peg$c213) {
          s6 = peg$c213;
          peg$currPos += 2;
        } else {
          s6 = peg$FAILED;
          if (peg$silentFails === 0) { peg$fail(peg$e250); }
        }
        peg$silentFails--;
        if (s6 === peg$FAILED) {
          s5 = undefined;
        } else {
          peg$currPos = s5;
          s5 = peg$FAILED;
        }
        if (s5 !== peg$FAILED) {
          if (input.length > peg$currPos) {
            s6 = input.charAt(peg$currPos);
            peg$currPos++;
          } else {
            s6 = peg$FAILED;
            if (peg$silentFails === 0) { peg$fail(peg$e251); }
          }
          if (s6 !== peg$FAILED) {
            peg$savedPos = s4;
            s4 = peg$f75(s6);
          } else {
            peg$currPos = s4;
            s4 = peg$FAILED;
          }
        } else {
          peg$currPos = s4;
          s4 = peg$FAILED;
        }
      }
      if (input.substr(peg$currPos, 2) === peg$c213) {
        s4 = peg$c213;
        peg$currPos += 2;
      } else {
        s4 = peg$FAILED;
        if (peg$silentFails === 0) { peg$fail(peg$e250); }
      }
      if (s4 !== peg$FAILED) {
        s2 = [s2, s3, s4];
        s1 = s2;
      } else {
        peg$currPos = s1;
        s1 = peg$FAILED;
      }
    } else {
      peg$currPos = s1;
      s1 = peg$FAILED;
    }
    if (s1 !== peg$FAILED) {
      s0 = input.substring(s0, peg$currPos);
    } else {
      s0 = s1;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parsewhitespace() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 303;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = [];
    if (peg$r12.test(input.charAt(peg$currPos))) {
      s2 = input.charAt(peg$currPos);
      peg$currPos++;
    } else {
      s2 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e252); }
    }
    if (s2 !== peg$FAILED) {
      while (s2 !== peg$FAILED) {
        s1.push(s2);
        if (peg$r12.test(input.charAt(peg$currPos))) {
          s2 = input.charAt(peg$currPos);
          peg$currPos++;
        } else {
          s2 = peg$FAILED;
          if (peg$silentFails === 0) { peg$fail(peg$e252); }
        }
      }
    } else {
      s1 = peg$FAILED;
    }
    if (s1 !== peg$FAILED) {
      s0 = input.substring(s0, peg$currPos);
    } else {
      s0 = s1;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }

  function peg$parseterminal() {
    var s0, s1, s2;

    var key = peg$currPos * 305 + 304;
    var cached = peg$resultsCache[key];

    if (cached) {
      peg$currPos = cached.nextPos;

      return cached.result;
    }

    s0 = peg$currPos;
    s1 = peg$currPos;
    peg$silentFails++;
    if (peg$r1.test(input.charAt(peg$currPos))) {
      s2 = input.charAt(peg$currPos);
      peg$currPos++;
    } else {
      s2 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$e209); }
    }
    peg$silentFails--;
    if (s2 === peg$FAILED) {
      s1 = undefined;
    } else {
      peg$currPos = s1;
      s1 = peg$FAILED;
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      peg$savedPos = s0;
      s0 = peg$f76(s2);
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };

    return s0;
  }


    const OPEN_CURLY = String.fromCharCode(123);

    const makeScope = (name, parent) => ({
      name,
      parent,
      bindings: {},
      types: {},
      functions: {},
    });
    const pushScope = scope => {
      // console.log('pushing scope at ',text());
      scopes.push(scope);
      return scope;
    };
    const popScope = scope => {
      // console.log('popping scope at ',text());
      if(!scope.parent) {
        throw new Error('popped bad scope', scope, 'at', text());
      }
      return scope.parent;
    };

    const warn = (...args) => !options.quiet && console.warn(...args);

    // Types (aka struct) scope
    const addTypes = (scope, ...types) => {
      types.forEach(([identifier, type]) => {
        scope.types[identifier] = {
          references: [type]
        };
      });
    };
    const addTypeReference = (scope, name, reference) => {
      scope.types[name].references.push(reference);
    };
    const findTypeScope = (scope, typeName) => {
      if(!scope) {
        return null;
      }
      if(typeName in scope.types) {
        return scope;
      }
      return findTypeScope(scope.parent, typeName);
    };
    const isDeclaredType = (scope, typeName) => findTypeScope(scope, typeName) !== null;

    // Bindings (aka variables, parameters) scope
    const createBindings = (scope, ...bindings) => {
      bindings.forEach(([identifier, binding]) => {
        const newBinding = scope.bindings[identifier] || { references: [] };
        newBinding.initializer = binding;
        newBinding.references.unshift(binding);
        scope.bindings[identifier] = newBinding;
      });
    };
    const addBindingReference = (scope, name, reference) => {
      // In the case of "float a = 1, b = a;" we parse the final "a" before the
      // parent declarator list is parsed. So we might need to add the final "a"
      // to the scope first.
      const foundScope = findBindingScope(scope, name);
      if(foundScope) {
        foundScope.bindings[name].references.push(reference);
      } else {
        createBindings(scope, [name, reference]);
      }
    };
    const findBindingScope = (scope, name) => {
      if(!scope) {
        return null;
      }
      if(name in scope.bindings) {
        return scope;
      }
      return findBindingScope(scope.parent, name);
    };

    // Function scope
    const createFunction = (scope, name, declaration) => {
      scope.functions[name] = { references: [declaration] };
    };
    const addFunctionReference = (scope, name, reference) => {
      const global = findGlobalScope(scope);
      if(name in global.functions) {
        global.functions[name].references.push(reference);
      } else {
        createFunction(scope, name, reference);
      }
    };
    const findGlobalScope = scope => scope.parent ? findGlobalScope(scope.parent) : scope;
    const isDeclaredFunction = (scope, fnName) => fnName in findGlobalScope(scope).functions;

    let scopes = [makeScope('global')];
    let scope = scopes[0];

    const node = (type, attrs) => ({
      type,
      ...attrs
    });

    // Filter out "empty" elements from an array
    const xnil = (...args) => args.flat().filter(e =>
      e !== undefined && e !== null && e !== '' && e.length !== 0
    );

    // Given an array of nodes with potential null empty values, convert to text.
    // Kind of like $(rule) but filters out empty rules
    const toText = (...args) => xnil(args).join('');

    const ifOnly = arr => arr.length > 1 ? arr : arr[0];

    // Remove empty elements and return value if only 1 element remains
    const collapse = (...args) => ifOnly(xnil(args));

    // Create a left associative tree of nodes
  	const leftAssociate = (...nodes) =>
      nodes.flat().reduce((current, [operator, expr]) => ({
        type: "binary",
        operator: operator,
        left: current,
        right: expr
      }));

    // No longer needed?
    // const without = (obj, ...keys) => Object.entries(obj).reduce((acc, [key, value]) => ({
    //   ...acc,
    //   ...(!keys.includes(key) && { [key]: value })
    // }), {});

    // Group the statements in a switch statement into cases / default arrays
    const groupCases = (statements) => statements.reduce((cases, stmt) => {
      if(stmt.type === 'case_label') {
        return [
          ...cases,
          node(
            'switch_case',
            {
              statements: [],
              case: stmt.case,
              test: stmt.test,
              colon: stmt.colon,
            }
          )
        ];
      } else if(stmt.type === 'default_label') {
        return [
          ...cases,
          node(
            'default_case',
            {
              statements: [],
              default: stmt.default,
              colon: stmt.colon,
            }
          )
        ];
      // It would be nice to encode this in the grammar instead of a manual check
      } else if(!cases.length) {
        throw new Error('A switch statement body must start with a case or default label');
      } else {
        const tail = cases.slice(-1)[0];
        return [...cases.slice(0, -1), {
          ...tail,
          statements: [
            ...tail.statements,
            stmt
          ]
        }];
      }
    }, []);


    // From https://www.khronos.org/registry/OpenGL-Refpages/gl4/index.php
    // excluding gl_ prefixed builtins, which don't appear to be functions
    const builtIns = new Set([
      'abs',
      'acos',
      'acosh',
      'all',
      'any',
      'asin',
      'asinh',
      'atan',
      'atanh',
      'atomicAdd',
      'atomicAnd',
      'atomicCompSwap',
      'atomicCounter',
      'atomicCounterDecrement',
      'atomicCounterIncrement',
      'atomicExchange',
      'atomicMax',
      'atomicMin',
      'atomicOr',
      'atomicXor',
      'barrier',
      'bitCount',
      'bitfieldExtract',
      'bitfieldInsert',
      'bitfieldReverse',
      'ceil',
      'clamp',
      'cos',
      'cosh',
      'cross',
      'degrees',
      'determinant',
      'dFdx',
      'dFdxCoarse',
      'dFdxFine',
      'dFdy',
      'dFdyCoarse',
      'dFdyFine',
      'distance',
      'dot',
      'EmitStreamVertex',
      'EmitVertex',
      'EndPrimitive',
      'EndStreamPrimitive',
      'equal',
      'exp',
      'exp2',
      'faceforward',
      'findLSB',
      'findMSB',
      'floatBitsToInt',
      'floatBitsToUint',
      'floor',
      'fma',
      'fract',
      'frexp',
      'fwidth',
      'fwidthCoarse',
      'fwidthFine',
      'greaterThan',
      'greaterThanEqual',
      'groupMemoryBarrier',
      'imageAtomicAdd',
      'imageAtomicAnd',
      'imageAtomicCompSwap',
      'imageAtomicExchange',
      'imageAtomicMax',
      'imageAtomicMin',
      'imageAtomicOr',
      'imageAtomicXor',
      'imageLoad',
      'imageSamples',
      'imageSize',
      'imageStore',
      'imulExtended',
      'intBitsToFloat',
      'interpolateAtCentroid',
      'interpolateAtOffset',
      'interpolateAtSample',
      'inverse',
      'inversesqrt',
      'isinf',
      'isnan',
      'ldexp',
      'length',
      'lessThan',
      'lessThanEqual',
      'log',
      'log2',
      'matrixCompMult',
      'max',
      'memoryBarrier',
      'memoryBarrierAtomicCounter',
      'memoryBarrierBuffer',
      'memoryBarrierImage',
      'memoryBarrierShared',
      'min',
      'mix',
      'mod',
      'modf',
      'noise',
      'noise1',
      'noise2',
      'noise3',
      'noise4',
      'normalize',
      'not',
      'notEqual',
      'outerProduct',
      'packDouble2x32',
      'packHalf2x16',
      'packSnorm2x16',
      'packSnorm4x8',
      'packUnorm',
      'packUnorm2x16',
      'packUnorm4x8',
      'pow',
      'radians',
      'reflect',
      'refract',
      'round',
      'roundEven',
      'sign',
      'sin',
      'sinh',
      'smoothstep',
      'sqrt',
      'step',
      'tan',
      'tanh',
      'texelFetch',
      'texelFetchOffset',
      'texture',
      'textureGather',
      'textureGatherOffset',
      'textureGatherOffsets',
      'textureGrad',
      'textureGradOffset',
      'textureLod',
      'textureLodOffset',
      'textureOffset',
      'textureProj',
      'textureProjGrad',
      'textureProjGradOffset',
      'textureProjLod',
      'textureProjLodOffset',
      'textureProjOffset',
      'textureQueryLevels',
      'textureQueryLod',
      'textureSamples',
      'textureSize',
      'transpose',
      'trunc',
      'uaddCarry',
      'uintBitsToFloat',
      'umulExtended',
      'unpackDouble2x32',
      'unpackHalf2x16',
      'unpackSnorm2x16',
      'unpackSnorm4x8',
      'unpackUnorm',
      'unpackUnorm2x16',
      'unpackUnorm4x8',
      'usubBorrow',
      // GLSL ES 1.00
      'texture2D', 'textureCube'
    ]);


  peg$result = peg$startRuleFunction();

  if (peg$result !== peg$FAILED && peg$currPos === input.length) {
    return peg$result;
  } else {
    if (peg$result !== peg$FAILED && peg$currPos < input.length) {
      peg$fail(peg$endExpectation());
    }

    throw peg$buildStructuredError(
      peg$maxFailExpected,
      peg$maxFailPos < input.length ? input.charAt(peg$maxFailPos) : null,
      peg$maxFailPos < input.length
        ? peg$computeLocation(peg$maxFailPos, peg$maxFailPos + 1)
        : peg$computeLocation(peg$maxFailPos, peg$maxFailPos)
    );
  }
}

var parser = {
  SyntaxError: peg$SyntaxError,
  parse: peg$parse
};

"use strict";
var __importDefault = (commonjsGlobal && commonjsGlobal.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
var generator_1 = __importDefault(generator);
var parser_1 = __importDefault(parser);
var dist = { generate: generator_1.default, parser: parser_1.default };

// Format is Key (Javascript function name), Value: GLSL Source
// SDFs from
// https://iquilezles.org/www/articles/distfunctions/distfunctions.htm
// Make sure to destruct the name in sculpt.js (search for DESTRUCT SDFs)
var sdfs = {
  boxFrame: "float sdBoxFrame( vec3 p, vec3 b, float e )\n{\n    p = abs(p  )-b;\nvec3 q = abs(p+e)-e;\nreturn min(min(\n    length(max(vec3(p.x,q.y,q.z),0.0))+min(max(p.x,max(q.y,q.z)),0.0),\n    length(max(vec3(q.x,p.y,q.z),0.0))+min(max(q.x,max(p.y,q.z)),0.0)),\n    length(max(vec3(q.x,q.y,p.z),0.0))+min(max(q.x,max(q.y,p.z)),0.0));\n}",
  link: "float sdLink( vec3 p, float le, float r1, float r2 )\n{\n    vec3 q = vec3( p.x, max(abs(p.y)-le,0.0), p.z );\n    return length(vec2(length(q.xy)-r1,q.z)) - r2;\n}",
  cappedTorus: "\nfloat sdCappedTorus(in vec3 p, in vec2 sc, in float ra, in float rb)\n{\n    p.x = abs(p.x);\n    float k = (sc.y*p.x>sc.x*p.y) ? dot(p.xy,sc) : length(p.xy);\n    return sqrt( dot(p,p) + ra*ra - 2.0*ra*k ) - rb;\n}\n"
};

const name$1="estraverse";const description$1="ECMAScript JS AST traversal functions";const homepage$1="https://github.com/estools/estraverse";const main$1="estraverse.js";const version$1="4.3.0";const engines$1={node:">=4.0"};const maintainers$1=[{name:"Yusuke Suzuki",email:"utatane.tea@gmail.com",web:"http://github.com/Constellation"}];const repository$1={type:"git",url:"http://github.com/estools/estraverse.git"};const devDependencies$1={"babel-preset-env":"^1.6.1","babel-register":"^6.3.13",chai:"^2.1.1",espree:"^1.11.0",gulp:"^3.8.10","gulp-bump":"^0.2.2","gulp-filter":"^2.0.0","gulp-git":"^1.0.1","gulp-tag-version":"^1.3.0",jshint:"^2.5.6",mocha:"^2.1.0"};const license$1="BSD-2-Clause";const scripts$1={test:"npm run-script lint && npm run-script unit-test",lint:"jshint estraverse.js","unit-test":"mocha --compilers js:babel-register"};var require$$0 = {name:name$1,description:description$1,homepage:homepage$1,main:main$1,version:version$1,engines:engines$1,maintainers:maintainers$1,repository:repository$1,devDependencies:devDependencies$1,license:license$1,scripts:scripts$1};

/*
  Copyright (C) 2012-2013 Yusuke Suzuki <utatane.tea@gmail.com>
  Copyright (C) 2012 Ariya Hidayat <ariya.hidayat@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

var estraverse = createCommonjsModule(function (module, exports) {
/*jslint vars:false, bitwise:true*/
/*jshint indent:4*/
/*global exports:true*/
(function clone(exports) {
    'use strict';

    var Syntax,
        VisitorOption,
        VisitorKeys,
        BREAK,
        SKIP,
        REMOVE;

    function deepCopy(obj) {
        var ret = {}, key, val;
        for (key in obj) {
            if (obj.hasOwnProperty(key)) {
                val = obj[key];
                if (typeof val === 'object' && val !== null) {
                    ret[key] = deepCopy(val);
                } else {
                    ret[key] = val;
                }
            }
        }
        return ret;
    }

    // based on LLVM libc++ upper_bound / lower_bound
    // MIT License

    function upperBound(array, func) {
        var diff, len, i, current;

        len = array.length;
        i = 0;

        while (len) {
            diff = len >>> 1;
            current = i + diff;
            if (func(array[current])) {
                len = diff;
            } else {
                i = current + 1;
                len -= diff + 1;
            }
        }
        return i;
    }

    Syntax = {
        AssignmentExpression: 'AssignmentExpression',
        AssignmentPattern: 'AssignmentPattern',
        ArrayExpression: 'ArrayExpression',
        ArrayPattern: 'ArrayPattern',
        ArrowFunctionExpression: 'ArrowFunctionExpression',
        AwaitExpression: 'AwaitExpression', // CAUTION: It's deferred to ES7.
        BlockStatement: 'BlockStatement',
        BinaryExpression: 'BinaryExpression',
        BreakStatement: 'BreakStatement',
        CallExpression: 'CallExpression',
        CatchClause: 'CatchClause',
        ClassBody: 'ClassBody',
        ClassDeclaration: 'ClassDeclaration',
        ClassExpression: 'ClassExpression',
        ComprehensionBlock: 'ComprehensionBlock',  // CAUTION: It's deferred to ES7.
        ComprehensionExpression: 'ComprehensionExpression',  // CAUTION: It's deferred to ES7.
        ConditionalExpression: 'ConditionalExpression',
        ContinueStatement: 'ContinueStatement',
        DebuggerStatement: 'DebuggerStatement',
        DirectiveStatement: 'DirectiveStatement',
        DoWhileStatement: 'DoWhileStatement',
        EmptyStatement: 'EmptyStatement',
        ExportAllDeclaration: 'ExportAllDeclaration',
        ExportDefaultDeclaration: 'ExportDefaultDeclaration',
        ExportNamedDeclaration: 'ExportNamedDeclaration',
        ExportSpecifier: 'ExportSpecifier',
        ExpressionStatement: 'ExpressionStatement',
        ForStatement: 'ForStatement',
        ForInStatement: 'ForInStatement',
        ForOfStatement: 'ForOfStatement',
        FunctionDeclaration: 'FunctionDeclaration',
        FunctionExpression: 'FunctionExpression',
        GeneratorExpression: 'GeneratorExpression',  // CAUTION: It's deferred to ES7.
        Identifier: 'Identifier',
        IfStatement: 'IfStatement',
        ImportExpression: 'ImportExpression',
        ImportDeclaration: 'ImportDeclaration',
        ImportDefaultSpecifier: 'ImportDefaultSpecifier',
        ImportNamespaceSpecifier: 'ImportNamespaceSpecifier',
        ImportSpecifier: 'ImportSpecifier',
        Literal: 'Literal',
        LabeledStatement: 'LabeledStatement',
        LogicalExpression: 'LogicalExpression',
        MemberExpression: 'MemberExpression',
        MetaProperty: 'MetaProperty',
        MethodDefinition: 'MethodDefinition',
        ModuleSpecifier: 'ModuleSpecifier',
        NewExpression: 'NewExpression',
        ObjectExpression: 'ObjectExpression',
        ObjectPattern: 'ObjectPattern',
        Program: 'Program',
        Property: 'Property',
        RestElement: 'RestElement',
        ReturnStatement: 'ReturnStatement',
        SequenceExpression: 'SequenceExpression',
        SpreadElement: 'SpreadElement',
        Super: 'Super',
        SwitchStatement: 'SwitchStatement',
        SwitchCase: 'SwitchCase',
        TaggedTemplateExpression: 'TaggedTemplateExpression',
        TemplateElement: 'TemplateElement',
        TemplateLiteral: 'TemplateLiteral',
        ThisExpression: 'ThisExpression',
        ThrowStatement: 'ThrowStatement',
        TryStatement: 'TryStatement',
        UnaryExpression: 'UnaryExpression',
        UpdateExpression: 'UpdateExpression',
        VariableDeclaration: 'VariableDeclaration',
        VariableDeclarator: 'VariableDeclarator',
        WhileStatement: 'WhileStatement',
        WithStatement: 'WithStatement',
        YieldExpression: 'YieldExpression'
    };

    VisitorKeys = {
        AssignmentExpression: ['left', 'right'],
        AssignmentPattern: ['left', 'right'],
        ArrayExpression: ['elements'],
        ArrayPattern: ['elements'],
        ArrowFunctionExpression: ['params', 'body'],
        AwaitExpression: ['argument'], // CAUTION: It's deferred to ES7.
        BlockStatement: ['body'],
        BinaryExpression: ['left', 'right'],
        BreakStatement: ['label'],
        CallExpression: ['callee', 'arguments'],
        CatchClause: ['param', 'body'],
        ClassBody: ['body'],
        ClassDeclaration: ['id', 'superClass', 'body'],
        ClassExpression: ['id', 'superClass', 'body'],
        ComprehensionBlock: ['left', 'right'],  // CAUTION: It's deferred to ES7.
        ComprehensionExpression: ['blocks', 'filter', 'body'],  // CAUTION: It's deferred to ES7.
        ConditionalExpression: ['test', 'consequent', 'alternate'],
        ContinueStatement: ['label'],
        DebuggerStatement: [],
        DirectiveStatement: [],
        DoWhileStatement: ['body', 'test'],
        EmptyStatement: [],
        ExportAllDeclaration: ['source'],
        ExportDefaultDeclaration: ['declaration'],
        ExportNamedDeclaration: ['declaration', 'specifiers', 'source'],
        ExportSpecifier: ['exported', 'local'],
        ExpressionStatement: ['expression'],
        ForStatement: ['init', 'test', 'update', 'body'],
        ForInStatement: ['left', 'right', 'body'],
        ForOfStatement: ['left', 'right', 'body'],
        FunctionDeclaration: ['id', 'params', 'body'],
        FunctionExpression: ['id', 'params', 'body'],
        GeneratorExpression: ['blocks', 'filter', 'body'],  // CAUTION: It's deferred to ES7.
        Identifier: [],
        IfStatement: ['test', 'consequent', 'alternate'],
        ImportExpression: ['source'],
        ImportDeclaration: ['specifiers', 'source'],
        ImportDefaultSpecifier: ['local'],
        ImportNamespaceSpecifier: ['local'],
        ImportSpecifier: ['imported', 'local'],
        Literal: [],
        LabeledStatement: ['label', 'body'],
        LogicalExpression: ['left', 'right'],
        MemberExpression: ['object', 'property'],
        MetaProperty: ['meta', 'property'],
        MethodDefinition: ['key', 'value'],
        ModuleSpecifier: [],
        NewExpression: ['callee', 'arguments'],
        ObjectExpression: ['properties'],
        ObjectPattern: ['properties'],
        Program: ['body'],
        Property: ['key', 'value'],
        RestElement: [ 'argument' ],
        ReturnStatement: ['argument'],
        SequenceExpression: ['expressions'],
        SpreadElement: ['argument'],
        Super: [],
        SwitchStatement: ['discriminant', 'cases'],
        SwitchCase: ['test', 'consequent'],
        TaggedTemplateExpression: ['tag', 'quasi'],
        TemplateElement: [],
        TemplateLiteral: ['quasis', 'expressions'],
        ThisExpression: [],
        ThrowStatement: ['argument'],
        TryStatement: ['block', 'handler', 'finalizer'],
        UnaryExpression: ['argument'],
        UpdateExpression: ['argument'],
        VariableDeclaration: ['declarations'],
        VariableDeclarator: ['id', 'init'],
        WhileStatement: ['test', 'body'],
        WithStatement: ['object', 'body'],
        YieldExpression: ['argument']
    };

    // unique id
    BREAK = {};
    SKIP = {};
    REMOVE = {};

    VisitorOption = {
        Break: BREAK,
        Skip: SKIP,
        Remove: REMOVE
    };

    function Reference(parent, key) {
        this.parent = parent;
        this.key = key;
    }

    Reference.prototype.replace = function replace(node) {
        this.parent[this.key] = node;
    };

    Reference.prototype.remove = function remove() {
        if (Array.isArray(this.parent)) {
            this.parent.splice(this.key, 1);
            return true;
        } else {
            this.replace(null);
            return false;
        }
    };

    function Element(node, path, wrap, ref) {
        this.node = node;
        this.path = path;
        this.wrap = wrap;
        this.ref = ref;
    }

    function Controller() { }

    // API:
    // return property path array from root to current node
    Controller.prototype.path = function path() {
        var i, iz, j, jz, result, element;

        function addToPath(result, path) {
            if (Array.isArray(path)) {
                for (j = 0, jz = path.length; j < jz; ++j) {
                    result.push(path[j]);
                }
            } else {
                result.push(path);
            }
        }

        // root node
        if (!this.__current.path) {
            return null;
        }

        // first node is sentinel, second node is root element
        result = [];
        for (i = 2, iz = this.__leavelist.length; i < iz; ++i) {
            element = this.__leavelist[i];
            addToPath(result, element.path);
        }
        addToPath(result, this.__current.path);
        return result;
    };

    // API:
    // return type of current node
    Controller.prototype.type = function () {
        var node = this.current();
        return node.type || this.__current.wrap;
    };

    // API:
    // return array of parent elements
    Controller.prototype.parents = function parents() {
        var i, iz, result;

        // first node is sentinel
        result = [];
        for (i = 1, iz = this.__leavelist.length; i < iz; ++i) {
            result.push(this.__leavelist[i].node);
        }

        return result;
    };

    // API:
    // return current node
    Controller.prototype.current = function current() {
        return this.__current.node;
    };

    Controller.prototype.__execute = function __execute(callback, element) {
        var previous, result;

        result = undefined;

        previous  = this.__current;
        this.__current = element;
        this.__state = null;
        if (callback) {
            result = callback.call(this, element.node, this.__leavelist[this.__leavelist.length - 1].node);
        }
        this.__current = previous;

        return result;
    };

    // API:
    // notify control skip / break
    Controller.prototype.notify = function notify(flag) {
        this.__state = flag;
    };

    // API:
    // skip child nodes of current node
    Controller.prototype.skip = function () {
        this.notify(SKIP);
    };

    // API:
    // break traversals
    Controller.prototype['break'] = function () {
        this.notify(BREAK);
    };

    // API:
    // remove node
    Controller.prototype.remove = function () {
        this.notify(REMOVE);
    };

    Controller.prototype.__initialize = function(root, visitor) {
        this.visitor = visitor;
        this.root = root;
        this.__worklist = [];
        this.__leavelist = [];
        this.__current = null;
        this.__state = null;
        this.__fallback = null;
        if (visitor.fallback === 'iteration') {
            this.__fallback = Object.keys;
        } else if (typeof visitor.fallback === 'function') {
            this.__fallback = visitor.fallback;
        }

        this.__keys = VisitorKeys;
        if (visitor.keys) {
            this.__keys = Object.assign(Object.create(this.__keys), visitor.keys);
        }
    };

    function isNode(node) {
        if (node == null) {
            return false;
        }
        return typeof node === 'object' && typeof node.type === 'string';
    }

    function isProperty(nodeType, key) {
        return (nodeType === Syntax.ObjectExpression || nodeType === Syntax.ObjectPattern) && 'properties' === key;
    }

    Controller.prototype.traverse = function traverse(root, visitor) {
        var worklist,
            leavelist,
            element,
            node,
            nodeType,
            ret,
            key,
            current,
            current2,
            candidates,
            candidate,
            sentinel;

        this.__initialize(root, visitor);

        sentinel = {};

        // reference
        worklist = this.__worklist;
        leavelist = this.__leavelist;

        // initialize
        worklist.push(new Element(root, null, null, null));
        leavelist.push(new Element(null, null, null, null));

        while (worklist.length) {
            element = worklist.pop();

            if (element === sentinel) {
                element = leavelist.pop();

                ret = this.__execute(visitor.leave, element);

                if (this.__state === BREAK || ret === BREAK) {
                    return;
                }
                continue;
            }

            if (element.node) {

                ret = this.__execute(visitor.enter, element);

                if (this.__state === BREAK || ret === BREAK) {
                    return;
                }

                worklist.push(sentinel);
                leavelist.push(element);

                if (this.__state === SKIP || ret === SKIP) {
                    continue;
                }

                node = element.node;
                nodeType = node.type || element.wrap;
                candidates = this.__keys[nodeType];
                if (!candidates) {
                    if (this.__fallback) {
                        candidates = this.__fallback(node);
                    } else {
                        throw new Error('Unknown node type ' + nodeType + '.');
                    }
                }

                current = candidates.length;
                while ((current -= 1) >= 0) {
                    key = candidates[current];
                    candidate = node[key];
                    if (!candidate) {
                        continue;
                    }

                    if (Array.isArray(candidate)) {
                        current2 = candidate.length;
                        while ((current2 -= 1) >= 0) {
                            if (!candidate[current2]) {
                                continue;
                            }
                            if (isProperty(nodeType, candidates[current])) {
                                element = new Element(candidate[current2], [key, current2], 'Property', null);
                            } else if (isNode(candidate[current2])) {
                                element = new Element(candidate[current2], [key, current2], null, null);
                            } else {
                                continue;
                            }
                            worklist.push(element);
                        }
                    } else if (isNode(candidate)) {
                        worklist.push(new Element(candidate, key, null, null));
                    }
                }
            }
        }
    };

    Controller.prototype.replace = function replace(root, visitor) {
        var worklist,
            leavelist,
            node,
            nodeType,
            target,
            element,
            current,
            current2,
            candidates,
            candidate,
            sentinel,
            outer,
            key;

        function removeElem(element) {
            var i,
                key,
                nextElem,
                parent;

            if (element.ref.remove()) {
                // When the reference is an element of an array.
                key = element.ref.key;
                parent = element.ref.parent;

                // If removed from array, then decrease following items' keys.
                i = worklist.length;
                while (i--) {
                    nextElem = worklist[i];
                    if (nextElem.ref && nextElem.ref.parent === parent) {
                        if  (nextElem.ref.key < key) {
                            break;
                        }
                        --nextElem.ref.key;
                    }
                }
            }
        }

        this.__initialize(root, visitor);

        sentinel = {};

        // reference
        worklist = this.__worklist;
        leavelist = this.__leavelist;

        // initialize
        outer = {
            root: root
        };
        element = new Element(root, null, null, new Reference(outer, 'root'));
        worklist.push(element);
        leavelist.push(element);

        while (worklist.length) {
            element = worklist.pop();

            if (element === sentinel) {
                element = leavelist.pop();

                target = this.__execute(visitor.leave, element);

                // node may be replaced with null,
                // so distinguish between undefined and null in this place
                if (target !== undefined && target !== BREAK && target !== SKIP && target !== REMOVE) {
                    // replace
                    element.ref.replace(target);
                }

                if (this.__state === REMOVE || target === REMOVE) {
                    removeElem(element);
                }

                if (this.__state === BREAK || target === BREAK) {
                    return outer.root;
                }
                continue;
            }

            target = this.__execute(visitor.enter, element);

            // node may be replaced with null,
            // so distinguish between undefined and null in this place
            if (target !== undefined && target !== BREAK && target !== SKIP && target !== REMOVE) {
                // replace
                element.ref.replace(target);
                element.node = target;
            }

            if (this.__state === REMOVE || target === REMOVE) {
                removeElem(element);
                element.node = null;
            }

            if (this.__state === BREAK || target === BREAK) {
                return outer.root;
            }

            // node may be null
            node = element.node;
            if (!node) {
                continue;
            }

            worklist.push(sentinel);
            leavelist.push(element);

            if (this.__state === SKIP || target === SKIP) {
                continue;
            }

            nodeType = node.type || element.wrap;
            candidates = this.__keys[nodeType];
            if (!candidates) {
                if (this.__fallback) {
                    candidates = this.__fallback(node);
                } else {
                    throw new Error('Unknown node type ' + nodeType + '.');
                }
            }

            current = candidates.length;
            while ((current -= 1) >= 0) {
                key = candidates[current];
                candidate = node[key];
                if (!candidate) {
                    continue;
                }

                if (Array.isArray(candidate)) {
                    current2 = candidate.length;
                    while ((current2 -= 1) >= 0) {
                        if (!candidate[current2]) {
                            continue;
                        }
                        if (isProperty(nodeType, candidates[current])) {
                            element = new Element(candidate[current2], [key, current2], 'Property', new Reference(candidate, current2));
                        } else if (isNode(candidate[current2])) {
                            element = new Element(candidate[current2], [key, current2], null, new Reference(candidate, current2));
                        } else {
                            continue;
                        }
                        worklist.push(element);
                    }
                } else if (isNode(candidate)) {
                    worklist.push(new Element(candidate, key, null, new Reference(node, key)));
                }
            }
        }

        return outer.root;
    };

    function traverse(root, visitor) {
        var controller = new Controller();
        return controller.traverse(root, visitor);
    }

    function replace(root, visitor) {
        var controller = new Controller();
        return controller.replace(root, visitor);
    }

    function extendCommentRange(comment, tokens) {
        var target;

        target = upperBound(tokens, function search(token) {
            return token.range[0] > comment.range[0];
        });

        comment.extendedRange = [comment.range[0], comment.range[1]];

        if (target !== tokens.length) {
            comment.extendedRange[1] = tokens[target].range[0];
        }

        target -= 1;
        if (target >= 0) {
            comment.extendedRange[0] = tokens[target].range[1];
        }

        return comment;
    }

    function attachComments(tree, providedComments, tokens) {
        // At first, we should calculate extended comment ranges.
        var comments = [], comment, len, i, cursor;

        if (!tree.range) {
            throw new Error('attachComments needs range information');
        }

        // tokens array is empty, we attach comments to tree as 'leadingComments'
        if (!tokens.length) {
            if (providedComments.length) {
                for (i = 0, len = providedComments.length; i < len; i += 1) {
                    comment = deepCopy(providedComments[i]);
                    comment.extendedRange = [0, tree.range[0]];
                    comments.push(comment);
                }
                tree.leadingComments = comments;
            }
            return tree;
        }

        for (i = 0, len = providedComments.length; i < len; i += 1) {
            comments.push(extendCommentRange(deepCopy(providedComments[i]), tokens));
        }

        // This is based on John Freeman's implementation.
        cursor = 0;
        traverse(tree, {
            enter: function (node) {
                var comment;

                while (cursor < comments.length) {
                    comment = comments[cursor];
                    if (comment.extendedRange[1] > node.range[0]) {
                        break;
                    }

                    if (comment.extendedRange[1] === node.range[0]) {
                        if (!node.leadingComments) {
                            node.leadingComments = [];
                        }
                        node.leadingComments.push(comment);
                        comments.splice(cursor, 1);
                    } else {
                        cursor += 1;
                    }
                }

                // already out of owned node
                if (cursor === comments.length) {
                    return VisitorOption.Break;
                }

                if (comments[cursor].extendedRange[0] > node.range[1]) {
                    return VisitorOption.Skip;
                }
            }
        });

        cursor = 0;
        traverse(tree, {
            leave: function (node) {
                var comment;

                while (cursor < comments.length) {
                    comment = comments[cursor];
                    if (node.range[1] < comment.extendedRange[0]) {
                        break;
                    }

                    if (node.range[1] === comment.extendedRange[0]) {
                        if (!node.trailingComments) {
                            node.trailingComments = [];
                        }
                        node.trailingComments.push(comment);
                        comments.splice(cursor, 1);
                    } else {
                        cursor += 1;
                    }
                }

                // already out of owned node
                if (cursor === comments.length) {
                    return VisitorOption.Break;
                }

                if (comments[cursor].extendedRange[0] > node.range[1]) {
                    return VisitorOption.Skip;
                }
            }
        });

        return tree;
    }

    exports.version = require$$0.version;
    exports.Syntax = Syntax;
    exports.traverse = traverse;
    exports.replace = replace;
    exports.attachComments = attachComments;
    exports.VisitorKeys = VisitorKeys;
    exports.VisitorOption = VisitorOption;
    exports.Controller = Controller;
    exports.cloneEnvironment = function () { return clone({}); };

    return exports;
}(exports));
/* vim: set sw=4 ts=4 et tw=80 : */
});

/*
  Copyright (C) 2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 'AS IS'
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

var ast = createCommonjsModule(function (module) {
(function () {
    'use strict';

    function isExpression(node) {
        if (node == null) { return false; }
        switch (node.type) {
            case 'ArrayExpression':
            case 'AssignmentExpression':
            case 'BinaryExpression':
            case 'CallExpression':
            case 'ConditionalExpression':
            case 'FunctionExpression':
            case 'Identifier':
            case 'Literal':
            case 'LogicalExpression':
            case 'MemberExpression':
            case 'NewExpression':
            case 'ObjectExpression':
            case 'SequenceExpression':
            case 'ThisExpression':
            case 'UnaryExpression':
            case 'UpdateExpression':
                return true;
        }
        return false;
    }

    function isIterationStatement(node) {
        if (node == null) { return false; }
        switch (node.type) {
            case 'DoWhileStatement':
            case 'ForInStatement':
            case 'ForStatement':
            case 'WhileStatement':
                return true;
        }
        return false;
    }

    function isStatement(node) {
        if (node == null) { return false; }
        switch (node.type) {
            case 'BlockStatement':
            case 'BreakStatement':
            case 'ContinueStatement':
            case 'DebuggerStatement':
            case 'DoWhileStatement':
            case 'EmptyStatement':
            case 'ExpressionStatement':
            case 'ForInStatement':
            case 'ForStatement':
            case 'IfStatement':
            case 'LabeledStatement':
            case 'ReturnStatement':
            case 'SwitchStatement':
            case 'ThrowStatement':
            case 'TryStatement':
            case 'VariableDeclaration':
            case 'WhileStatement':
            case 'WithStatement':
                return true;
        }
        return false;
    }

    function isSourceElement(node) {
      return isStatement(node) || node != null && node.type === 'FunctionDeclaration';
    }

    function trailingStatement(node) {
        switch (node.type) {
        case 'IfStatement':
            if (node.alternate != null) {
                return node.alternate;
            }
            return node.consequent;

        case 'LabeledStatement':
        case 'ForStatement':
        case 'ForInStatement':
        case 'WhileStatement':
        case 'WithStatement':
            return node.body;
        }
        return null;
    }

    function isProblematicIfStatement(node) {
        var current;

        if (node.type !== 'IfStatement') {
            return false;
        }
        if (node.alternate == null) {
            return false;
        }
        current = node.consequent;
        do {
            if (current.type === 'IfStatement') {
                if (current.alternate == null)  {
                    return true;
                }
            }
            current = trailingStatement(current);
        } while (current);

        return false;
    }

    module.exports = {
        isExpression: isExpression,
        isStatement: isStatement,
        isIterationStatement: isIterationStatement,
        isSourceElement: isSourceElement,
        isProblematicIfStatement: isProblematicIfStatement,

        trailingStatement: trailingStatement
    };
}());
/* vim: set sw=4 ts=4 et tw=80 : */
});

/*
  Copyright (C) 2013-2014 Yusuke Suzuki <utatane.tea@gmail.com>
  Copyright (C) 2014 Ivan Nikulin <ifaaan@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

var code = createCommonjsModule(function (module) {
(function () {
    'use strict';

    var ES6Regex, ES5Regex, NON_ASCII_WHITESPACES, IDENTIFIER_START, IDENTIFIER_PART, ch;

    // See `tools/generate-identifier-regex.js`.
    ES5Regex = {
        // ECMAScript 5.1/Unicode v9.0.0 NonAsciiIdentifierStart:
        NonAsciiIdentifierStart: /[\xAA\xB5\xBA\xC0-\xD6\xD8-\xF6\xF8-\u02C1\u02C6-\u02D1\u02E0-\u02E4\u02EC\u02EE\u0370-\u0374\u0376\u0377\u037A-\u037D\u037F\u0386\u0388-\u038A\u038C\u038E-\u03A1\u03A3-\u03F5\u03F7-\u0481\u048A-\u052F\u0531-\u0556\u0559\u0561-\u0587\u05D0-\u05EA\u05F0-\u05F2\u0620-\u064A\u066E\u066F\u0671-\u06D3\u06D5\u06E5\u06E6\u06EE\u06EF\u06FA-\u06FC\u06FF\u0710\u0712-\u072F\u074D-\u07A5\u07B1\u07CA-\u07EA\u07F4\u07F5\u07FA\u0800-\u0815\u081A\u0824\u0828\u0840-\u0858\u08A0-\u08B4\u08B6-\u08BD\u0904-\u0939\u093D\u0950\u0958-\u0961\u0971-\u0980\u0985-\u098C\u098F\u0990\u0993-\u09A8\u09AA-\u09B0\u09B2\u09B6-\u09B9\u09BD\u09CE\u09DC\u09DD\u09DF-\u09E1\u09F0\u09F1\u0A05-\u0A0A\u0A0F\u0A10\u0A13-\u0A28\u0A2A-\u0A30\u0A32\u0A33\u0A35\u0A36\u0A38\u0A39\u0A59-\u0A5C\u0A5E\u0A72-\u0A74\u0A85-\u0A8D\u0A8F-\u0A91\u0A93-\u0AA8\u0AAA-\u0AB0\u0AB2\u0AB3\u0AB5-\u0AB9\u0ABD\u0AD0\u0AE0\u0AE1\u0AF9\u0B05-\u0B0C\u0B0F\u0B10\u0B13-\u0B28\u0B2A-\u0B30\u0B32\u0B33\u0B35-\u0B39\u0B3D\u0B5C\u0B5D\u0B5F-\u0B61\u0B71\u0B83\u0B85-\u0B8A\u0B8E-\u0B90\u0B92-\u0B95\u0B99\u0B9A\u0B9C\u0B9E\u0B9F\u0BA3\u0BA4\u0BA8-\u0BAA\u0BAE-\u0BB9\u0BD0\u0C05-\u0C0C\u0C0E-\u0C10\u0C12-\u0C28\u0C2A-\u0C39\u0C3D\u0C58-\u0C5A\u0C60\u0C61\u0C80\u0C85-\u0C8C\u0C8E-\u0C90\u0C92-\u0CA8\u0CAA-\u0CB3\u0CB5-\u0CB9\u0CBD\u0CDE\u0CE0\u0CE1\u0CF1\u0CF2\u0D05-\u0D0C\u0D0E-\u0D10\u0D12-\u0D3A\u0D3D\u0D4E\u0D54-\u0D56\u0D5F-\u0D61\u0D7A-\u0D7F\u0D85-\u0D96\u0D9A-\u0DB1\u0DB3-\u0DBB\u0DBD\u0DC0-\u0DC6\u0E01-\u0E30\u0E32\u0E33\u0E40-\u0E46\u0E81\u0E82\u0E84\u0E87\u0E88\u0E8A\u0E8D\u0E94-\u0E97\u0E99-\u0E9F\u0EA1-\u0EA3\u0EA5\u0EA7\u0EAA\u0EAB\u0EAD-\u0EB0\u0EB2\u0EB3\u0EBD\u0EC0-\u0EC4\u0EC6\u0EDC-\u0EDF\u0F00\u0F40-\u0F47\u0F49-\u0F6C\u0F88-\u0F8C\u1000-\u102A\u103F\u1050-\u1055\u105A-\u105D\u1061\u1065\u1066\u106E-\u1070\u1075-\u1081\u108E\u10A0-\u10C5\u10C7\u10CD\u10D0-\u10FA\u10FC-\u1248\u124A-\u124D\u1250-\u1256\u1258\u125A-\u125D\u1260-\u1288\u128A-\u128D\u1290-\u12B0\u12B2-\u12B5\u12B8-\u12BE\u12C0\u12C2-\u12C5\u12C8-\u12D6\u12D8-\u1310\u1312-\u1315\u1318-\u135A\u1380-\u138F\u13A0-\u13F5\u13F8-\u13FD\u1401-\u166C\u166F-\u167F\u1681-\u169A\u16A0-\u16EA\u16EE-\u16F8\u1700-\u170C\u170E-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176C\u176E-\u1770\u1780-\u17B3\u17D7\u17DC\u1820-\u1877\u1880-\u1884\u1887-\u18A8\u18AA\u18B0-\u18F5\u1900-\u191E\u1950-\u196D\u1970-\u1974\u1980-\u19AB\u19B0-\u19C9\u1A00-\u1A16\u1A20-\u1A54\u1AA7\u1B05-\u1B33\u1B45-\u1B4B\u1B83-\u1BA0\u1BAE\u1BAF\u1BBA-\u1BE5\u1C00-\u1C23\u1C4D-\u1C4F\u1C5A-\u1C7D\u1C80-\u1C88\u1CE9-\u1CEC\u1CEE-\u1CF1\u1CF5\u1CF6\u1D00-\u1DBF\u1E00-\u1F15\u1F18-\u1F1D\u1F20-\u1F45\u1F48-\u1F4D\u1F50-\u1F57\u1F59\u1F5B\u1F5D\u1F5F-\u1F7D\u1F80-\u1FB4\u1FB6-\u1FBC\u1FBE\u1FC2-\u1FC4\u1FC6-\u1FCC\u1FD0-\u1FD3\u1FD6-\u1FDB\u1FE0-\u1FEC\u1FF2-\u1FF4\u1FF6-\u1FFC\u2071\u207F\u2090-\u209C\u2102\u2107\u210A-\u2113\u2115\u2119-\u211D\u2124\u2126\u2128\u212A-\u212D\u212F-\u2139\u213C-\u213F\u2145-\u2149\u214E\u2160-\u2188\u2C00-\u2C2E\u2C30-\u2C5E\u2C60-\u2CE4\u2CEB-\u2CEE\u2CF2\u2CF3\u2D00-\u2D25\u2D27\u2D2D\u2D30-\u2D67\u2D6F\u2D80-\u2D96\u2DA0-\u2DA6\u2DA8-\u2DAE\u2DB0-\u2DB6\u2DB8-\u2DBE\u2DC0-\u2DC6\u2DC8-\u2DCE\u2DD0-\u2DD6\u2DD8-\u2DDE\u2E2F\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303C\u3041-\u3096\u309D-\u309F\u30A1-\u30FA\u30FC-\u30FF\u3105-\u312D\u3131-\u318E\u31A0-\u31BA\u31F0-\u31FF\u3400-\u4DB5\u4E00-\u9FD5\uA000-\uA48C\uA4D0-\uA4FD\uA500-\uA60C\uA610-\uA61F\uA62A\uA62B\uA640-\uA66E\uA67F-\uA69D\uA6A0-\uA6EF\uA717-\uA71F\uA722-\uA788\uA78B-\uA7AE\uA7B0-\uA7B7\uA7F7-\uA801\uA803-\uA805\uA807-\uA80A\uA80C-\uA822\uA840-\uA873\uA882-\uA8B3\uA8F2-\uA8F7\uA8FB\uA8FD\uA90A-\uA925\uA930-\uA946\uA960-\uA97C\uA984-\uA9B2\uA9CF\uA9E0-\uA9E4\uA9E6-\uA9EF\uA9FA-\uA9FE\uAA00-\uAA28\uAA40-\uAA42\uAA44-\uAA4B\uAA60-\uAA76\uAA7A\uAA7E-\uAAAF\uAAB1\uAAB5\uAAB6\uAAB9-\uAABD\uAAC0\uAAC2\uAADB-\uAADD\uAAE0-\uAAEA\uAAF2-\uAAF4\uAB01-\uAB06\uAB09-\uAB0E\uAB11-\uAB16\uAB20-\uAB26\uAB28-\uAB2E\uAB30-\uAB5A\uAB5C-\uAB65\uAB70-\uABE2\uAC00-\uD7A3\uD7B0-\uD7C6\uD7CB-\uD7FB\uF900-\uFA6D\uFA70-\uFAD9\uFB00-\uFB06\uFB13-\uFB17\uFB1D\uFB1F-\uFB28\uFB2A-\uFB36\uFB38-\uFB3C\uFB3E\uFB40\uFB41\uFB43\uFB44\uFB46-\uFBB1\uFBD3-\uFD3D\uFD50-\uFD8F\uFD92-\uFDC7\uFDF0-\uFDFB\uFE70-\uFE74\uFE76-\uFEFC\uFF21-\uFF3A\uFF41-\uFF5A\uFF66-\uFFBE\uFFC2-\uFFC7\uFFCA-\uFFCF\uFFD2-\uFFD7\uFFDA-\uFFDC]/,
        // ECMAScript 5.1/Unicode v9.0.0 NonAsciiIdentifierPart:
        NonAsciiIdentifierPart: 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    };

    ES6Regex = {
        // ECMAScript 6/Unicode v9.0.0 NonAsciiIdentifierStart:
        NonAsciiIdentifierStart: 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        // ECMAScript 6/Unicode v9.0.0 NonAsciiIdentifierPart:
        NonAsciiIdentifierPart: /[\xAA\xB5\xB7\xBA\xC0-\xD6\xD8-\xF6\xF8-\u02C1\u02C6-\u02D1\u02E0-\u02E4\u02EC\u02EE\u0300-\u0374\u0376\u0377\u037A-\u037D\u037F\u0386-\u038A\u038C\u038E-\u03A1\u03A3-\u03F5\u03F7-\u0481\u0483-\u0487\u048A-\u052F\u0531-\u0556\u0559\u0561-\u0587\u0591-\u05BD\u05BF\u05C1\u05C2\u05C4\u05C5\u05C7\u05D0-\u05EA\u05F0-\u05F2\u0610-\u061A\u0620-\u0669\u066E-\u06D3\u06D5-\u06DC\u06DF-\u06E8\u06EA-\u06FC\u06FF\u0710-\u074A\u074D-\u07B1\u07C0-\u07F5\u07FA\u0800-\u082D\u0840-\u085B\u08A0-\u08B4\u08B6-\u08BD\u08D4-\u08E1\u08E3-\u0963\u0966-\u096F\u0971-\u0983\u0985-\u098C\u098F\u0990\u0993-\u09A8\u09AA-\u09B0\u09B2\u09B6-\u09B9\u09BC-\u09C4\u09C7\u09C8\u09CB-\u09CE\u09D7\u09DC\u09DD\u09DF-\u09E3\u09E6-\u09F1\u0A01-\u0A03\u0A05-\u0A0A\u0A0F\u0A10\u0A13-\u0A28\u0A2A-\u0A30\u0A32\u0A33\u0A35\u0A36\u0A38\u0A39\u0A3C\u0A3E-\u0A42\u0A47\u0A48\u0A4B-\u0A4D\u0A51\u0A59-\u0A5C\u0A5E\u0A66-\u0A75\u0A81-\u0A83\u0A85-\u0A8D\u0A8F-\u0A91\u0A93-\u0AA8\u0AAA-\u0AB0\u0AB2\u0AB3\u0AB5-\u0AB9\u0ABC-\u0AC5\u0AC7-\u0AC9\u0ACB-\u0ACD\u0AD0\u0AE0-\u0AE3\u0AE6-\u0AEF\u0AF9\u0B01-\u0B03\u0B05-\u0B0C\u0B0F\u0B10\u0B13-\u0B28\u0B2A-\u0B30\u0B32\u0B33\u0B35-\u0B39\u0B3C-\u0B44\u0B47\u0B48\u0B4B-\u0B4D\u0B56\u0B57\u0B5C\u0B5D\u0B5F-\u0B63\u0B66-\u0B6F\u0B71\u0B82\u0B83\u0B85-\u0B8A\u0B8E-\u0B90\u0B92-\u0B95\u0B99\u0B9A\u0B9C\u0B9E\u0B9F\u0BA3\u0BA4\u0BA8-\u0BAA\u0BAE-\u0BB9\u0BBE-\u0BC2\u0BC6-\u0BC8\u0BCA-\u0BCD\u0BD0\u0BD7\u0BE6-\u0BEF\u0C00-\u0C03\u0C05-\u0C0C\u0C0E-\u0C10\u0C12-\u0C28\u0C2A-\u0C39\u0C3D-\u0C44\u0C46-\u0C48\u0C4A-\u0C4D\u0C55\u0C56\u0C58-\u0C5A\u0C60-\u0C63\u0C66-\u0C6F\u0C80-\u0C83\u0C85-\u0C8C\u0C8E-\u0C90\u0C92-\u0CA8\u0CAA-\u0CB3\u0CB5-\u0CB9\u0CBC-\u0CC4\u0CC6-\u0CC8\u0CCA-\u0CCD\u0CD5\u0CD6\u0CDE\u0CE0-\u0CE3\u0CE6-\u0CEF\u0CF1\u0CF2\u0D01-\u0D03\u0D05-\u0D0C\u0D0E-\u0D10\u0D12-\u0D3A\u0D3D-\u0D44\u0D46-\u0D48\u0D4A-\u0D4E\u0D54-\u0D57\u0D5F-\u0D63\u0D66-\u0D6F\u0D7A-\u0D7F\u0D82\u0D83\u0D85-\u0D96\u0D9A-\u0DB1\u0DB3-\u0DBB\u0DBD\u0DC0-\u0DC6\u0DCA\u0DCF-\u0DD4\u0DD6\u0DD8-\u0DDF\u0DE6-\u0DEF\u0DF2\u0DF3\u0E01-\u0E3A\u0E40-\u0E4E\u0E50-\u0E59\u0E81\u0E82\u0E84\u0E87\u0E88\u0E8A\u0E8D\u0E94-\u0E97\u0E99-\u0E9F\u0EA1-\u0EA3\u0EA5\u0EA7\u0EAA\u0EAB\u0EAD-\u0EB9\u0EBB-\u0EBD\u0EC0-\u0EC4\u0EC6\u0EC8-\u0ECD\u0ED0-\u0ED9\u0EDC-\u0EDF\u0F00\u0F18\u0F19\u0F20-\u0F29\u0F35\u0F37\u0F39\u0F3E-\u0F47\u0F49-\u0F6C\u0F71-\u0F84\u0F86-\u0F97\u0F99-\u0FBC\u0FC6\u1000-\u1049\u1050-\u109D\u10A0-\u10C5\u10C7\u10CD\u10D0-\u10FA\u10FC-\u1248\u124A-\u124D\u1250-\u1256\u1258\u125A-\u125D\u1260-\u1288\u128A-\u128D\u1290-\u12B0\u12B2-\u12B5\u12B8-\u12BE\u12C0\u12C2-\u12C5\u12C8-\u12D6\u12D8-\u1310\u1312-\u1315\u1318-\u135A\u135D-\u135F\u1369-\u1371\u1380-\u138F\u13A0-\u13F5\u13F8-\u13FD\u1401-\u166C\u166F-\u167F\u1681-\u169A\u16A0-\u16EA\u16EE-\u16F8\u1700-\u170C\u170E-\u1714\u1720-\u1734\u1740-\u1753\u1760-\u176C\u176E-\u1770\u1772\u1773\u1780-\u17D3\u17D7\u17DC\u17DD\u17E0-\u17E9\u180B-\u180D\u1810-\u1819\u1820-\u1877\u1880-\u18AA\u18B0-\u18F5\u1900-\u191E\u1920-\u192B\u1930-\u193B\u1946-\u196D\u1970-\u1974\u1980-\u19AB\u19B0-\u19C9\u19D0-\u19DA\u1A00-\u1A1B\u1A20-\u1A5E\u1A60-\u1A7C\u1A7F-\u1A89\u1A90-\u1A99\u1AA7\u1AB0-\u1ABD\u1B00-\u1B4B\u1B50-\u1B59\u1B6B-\u1B73\u1B80-\u1BF3\u1C00-\u1C37\u1C40-\u1C49\u1C4D-\u1C7D\u1C80-\u1C88\u1CD0-\u1CD2\u1CD4-\u1CF6\u1CF8\u1CF9\u1D00-\u1DF5\u1DFB-\u1F15\u1F18-\u1F1D\u1F20-\u1F45\u1F48-\u1F4D\u1F50-\u1F57\u1F59\u1F5B\u1F5D\u1F5F-\u1F7D\u1F80-\u1FB4\u1FB6-\u1FBC\u1FBE\u1FC2-\u1FC4\u1FC6-\u1FCC\u1FD0-\u1FD3\u1FD6-\u1FDB\u1FE0-\u1FEC\u1FF2-\u1FF4\u1FF6-\u1FFC\u200C\u200D\u203F\u2040\u2054\u2071\u207F\u2090-\u209C\u20D0-\u20DC\u20E1\u20E5-\u20F0\u2102\u2107\u210A-\u2113\u2115\u2118-\u211D\u2124\u2126\u2128\u212A-\u2139\u213C-\u213F\u2145-\u2149\u214E\u2160-\u2188\u2C00-\u2C2E\u2C30-\u2C5E\u2C60-\u2CE4\u2CEB-\u2CF3\u2D00-\u2D25\u2D27\u2D2D\u2D30-\u2D67\u2D6F\u2D7F-\u2D96\u2DA0-\u2DA6\u2DA8-\u2DAE\u2DB0-\u2DB6\u2DB8-\u2DBE\u2DC0-\u2DC6\u2DC8-\u2DCE\u2DD0-\u2DD6\u2DD8-\u2DDE\u2DE0-\u2DFF\u3005-\u3007\u3021-\u302F\u3031-\u3035\u3038-\u303C\u3041-\u3096\u3099-\u309F\u30A1-\u30FA\u30FC-\u30FF\u3105-\u312D\u3131-\u318E\u31A0-\u31BA\u31F0-\u31FF\u3400-\u4DB5\u4E00-\u9FD5\uA000-\uA48C\uA4D0-\uA4FD\uA500-\uA60C\uA610-\uA62B\uA640-\uA66F\uA674-\uA67D\uA67F-\uA6F1\uA717-\uA71F\uA722-\uA788\uA78B-\uA7AE\uA7B0-\uA7B7\uA7F7-\uA827\uA840-\uA873\uA880-\uA8C5\uA8D0-\uA8D9\uA8E0-\uA8F7\uA8FB\uA8FD\uA900-\uA92D\uA930-\uA953\uA960-\uA97C\uA980-\uA9C0\uA9CF-\uA9D9\uA9E0-\uA9FE\uAA00-\uAA36\uAA40-\uAA4D\uAA50-\uAA59\uAA60-\uAA76\uAA7A-\uAAC2\uAADB-\uAADD\uAAE0-\uAAEF\uAAF2-\uAAF6\uAB01-\uAB06\uAB09-\uAB0E\uAB11-\uAB16\uAB20-\uAB26\uAB28-\uAB2E\uAB30-\uAB5A\uAB5C-\uAB65\uAB70-\uABEA\uABEC\uABED\uABF0-\uABF9\uAC00-\uD7A3\uD7B0-\uD7C6\uD7CB-\uD7FB\uF900-\uFA6D\uFA70-\uFAD9\uFB00-\uFB06\uFB13-\uFB17\uFB1D-\uFB28\uFB2A-\uFB36\uFB38-\uFB3C\uFB3E\uFB40\uFB41\uFB43\uFB44\uFB46-\uFBB1\uFBD3-\uFD3D\uFD50-\uFD8F\uFD92-\uFDC7\uFDF0-\uFDFB\uFE00-\uFE0F\uFE20-\uFE2F\uFE33\uFE34\uFE4D-\uFE4F\uFE70-\uFE74\uFE76-\uFEFC\uFF10-\uFF19\uFF21-\uFF3A\uFF3F\uFF41-\uFF5A\uFF66-\uFFBE\uFFC2-\uFFC7\uFFCA-\uFFCF\uFFD2-\uFFD7\uFFDA-\uFFDC]|\uD800[\uDC00-\uDC0B\uDC0D-\uDC26\uDC28-\uDC3A\uDC3C\uDC3D\uDC3F-\uDC4D\uDC50-\uDC5D\uDC80-\uDCFA\uDD40-\uDD74\uDDFD\uDE80-\uDE9C\uDEA0-\uDED0\uDEE0\uDF00-\uDF1F\uDF30-\uDF4A\uDF50-\uDF7A\uDF80-\uDF9D\uDFA0-\uDFC3\uDFC8-\uDFCF\uDFD1-\uDFD5]|\uD801[\uDC00-\uDC9D\uDCA0-\uDCA9\uDCB0-\uDCD3\uDCD8-\uDCFB\uDD00-\uDD27\uDD30-\uDD63\uDE00-\uDF36\uDF40-\uDF55\uDF60-\uDF67]|\uD802[\uDC00-\uDC05\uDC08\uDC0A-\uDC35\uDC37\uDC38\uDC3C\uDC3F-\uDC55\uDC60-\uDC76\uDC80-\uDC9E\uDCE0-\uDCF2\uDCF4\uDCF5\uDD00-\uDD15\uDD20-\uDD39\uDD80-\uDDB7\uDDBE\uDDBF\uDE00-\uDE03\uDE05\uDE06\uDE0C-\uDE13\uDE15-\uDE17\uDE19-\uDE33\uDE38-\uDE3A\uDE3F\uDE60-\uDE7C\uDE80-\uDE9C\uDEC0-\uDEC7\uDEC9-\uDEE6\uDF00-\uDF35\uDF40-\uDF55\uDF60-\uDF72\uDF80-\uDF91]|\uD803[\uDC00-\uDC48\uDC80-\uDCB2\uDCC0-\uDCF2]|\uD804[\uDC00-\uDC46\uDC66-\uDC6F\uDC7F-\uDCBA\uDCD0-\uDCE8\uDCF0-\uDCF9\uDD00-\uDD34\uDD36-\uDD3F\uDD50-\uDD73\uDD76\uDD80-\uDDC4\uDDCA-\uDDCC\uDDD0-\uDDDA\uDDDC\uDE00-\uDE11\uDE13-\uDE37\uDE3E\uDE80-\uDE86\uDE88\uDE8A-\uDE8D\uDE8F-\uDE9D\uDE9F-\uDEA8\uDEB0-\uDEEA\uDEF0-\uDEF9\uDF00-\uDF03\uDF05-\uDF0C\uDF0F\uDF10\uDF13-\uDF28\uDF2A-\uDF30\uDF32\uDF33\uDF35-\uDF39\uDF3C-\uDF44\uDF47\uDF48\uDF4B-\uDF4D\uDF50\uDF57\uDF5D-\uDF63\uDF66-\uDF6C\uDF70-\uDF74]|\uD805[\uDC00-\uDC4A\uDC50-\uDC59\uDC80-\uDCC5\uDCC7\uDCD0-\uDCD9\uDD80-\uDDB5\uDDB8-\uDDC0\uDDD8-\uDDDD\uDE00-\uDE40\uDE44\uDE50-\uDE59\uDE80-\uDEB7\uDEC0-\uDEC9\uDF00-\uDF19\uDF1D-\uDF2B\uDF30-\uDF39]|\uD806[\uDCA0-\uDCE9\uDCFF\uDEC0-\uDEF8]|\uD807[\uDC00-\uDC08\uDC0A-\uDC36\uDC38-\uDC40\uDC50-\uDC59\uDC72-\uDC8F\uDC92-\uDCA7\uDCA9-\uDCB6]|\uD808[\uDC00-\uDF99]|\uD809[\uDC00-\uDC6E\uDC80-\uDD43]|[\uD80C\uD81C-\uD820\uD840-\uD868\uD86A-\uD86C\uD86F-\uD872][\uDC00-\uDFFF]|\uD80D[\uDC00-\uDC2E]|\uD811[\uDC00-\uDE46]|\uD81A[\uDC00-\uDE38\uDE40-\uDE5E\uDE60-\uDE69\uDED0-\uDEED\uDEF0-\uDEF4\uDF00-\uDF36\uDF40-\uDF43\uDF50-\uDF59\uDF63-\uDF77\uDF7D-\uDF8F]|\uD81B[\uDF00-\uDF44\uDF50-\uDF7E\uDF8F-\uDF9F\uDFE0]|\uD821[\uDC00-\uDFEC]|\uD822[\uDC00-\uDEF2]|\uD82C[\uDC00\uDC01]|\uD82F[\uDC00-\uDC6A\uDC70-\uDC7C\uDC80-\uDC88\uDC90-\uDC99\uDC9D\uDC9E]|\uD834[\uDD65-\uDD69\uDD6D-\uDD72\uDD7B-\uDD82\uDD85-\uDD8B\uDDAA-\uDDAD\uDE42-\uDE44]|\uD835[\uDC00-\uDC54\uDC56-\uDC9C\uDC9E\uDC9F\uDCA2\uDCA5\uDCA6\uDCA9-\uDCAC\uDCAE-\uDCB9\uDCBB\uDCBD-\uDCC3\uDCC5-\uDD05\uDD07-\uDD0A\uDD0D-\uDD14\uDD16-\uDD1C\uDD1E-\uDD39\uDD3B-\uDD3E\uDD40-\uDD44\uDD46\uDD4A-\uDD50\uDD52-\uDEA5\uDEA8-\uDEC0\uDEC2-\uDEDA\uDEDC-\uDEFA\uDEFC-\uDF14\uDF16-\uDF34\uDF36-\uDF4E\uDF50-\uDF6E\uDF70-\uDF88\uDF8A-\uDFA8\uDFAA-\uDFC2\uDFC4-\uDFCB\uDFCE-\uDFFF]|\uD836[\uDE00-\uDE36\uDE3B-\uDE6C\uDE75\uDE84\uDE9B-\uDE9F\uDEA1-\uDEAF]|\uD838[\uDC00-\uDC06\uDC08-\uDC18\uDC1B-\uDC21\uDC23\uDC24\uDC26-\uDC2A]|\uD83A[\uDC00-\uDCC4\uDCD0-\uDCD6\uDD00-\uDD4A\uDD50-\uDD59]|\uD83B[\uDE00-\uDE03\uDE05-\uDE1F\uDE21\uDE22\uDE24\uDE27\uDE29-\uDE32\uDE34-\uDE37\uDE39\uDE3B\uDE42\uDE47\uDE49\uDE4B\uDE4D-\uDE4F\uDE51\uDE52\uDE54\uDE57\uDE59\uDE5B\uDE5D\uDE5F\uDE61\uDE62\uDE64\uDE67-\uDE6A\uDE6C-\uDE72\uDE74-\uDE77\uDE79-\uDE7C\uDE7E\uDE80-\uDE89\uDE8B-\uDE9B\uDEA1-\uDEA3\uDEA5-\uDEA9\uDEAB-\uDEBB]|\uD869[\uDC00-\uDED6\uDF00-\uDFFF]|\uD86D[\uDC00-\uDF34\uDF40-\uDFFF]|\uD86E[\uDC00-\uDC1D\uDC20-\uDFFF]|\uD873[\uDC00-\uDEA1]|\uD87E[\uDC00-\uDE1D]|\uDB40[\uDD00-\uDDEF]/
    };

    function isDecimalDigit(ch) {
        return 0x30 <= ch && ch <= 0x39;  // 0..9
    }

    function isHexDigit(ch) {
        return 0x30 <= ch && ch <= 0x39 ||  // 0..9
            0x61 <= ch && ch <= 0x66 ||     // a..f
            0x41 <= ch && ch <= 0x46;       // A..F
    }

    function isOctalDigit(ch) {
        return ch >= 0x30 && ch <= 0x37;  // 0..7
    }

    // 7.2 White Space

    NON_ASCII_WHITESPACES = [
        0x1680,
        0x2000, 0x2001, 0x2002, 0x2003, 0x2004, 0x2005, 0x2006, 0x2007, 0x2008, 0x2009, 0x200A,
        0x202F, 0x205F,
        0x3000,
        0xFEFF
    ];

    function isWhiteSpace(ch) {
        return ch === 0x20 || ch === 0x09 || ch === 0x0B || ch === 0x0C || ch === 0xA0 ||
            ch >= 0x1680 && NON_ASCII_WHITESPACES.indexOf(ch) >= 0;
    }

    // 7.3 Line Terminators

    function isLineTerminator(ch) {
        return ch === 0x0A || ch === 0x0D || ch === 0x2028 || ch === 0x2029;
    }

    // 7.6 Identifier Names and Identifiers

    function fromCodePoint(cp) {
        if (cp <= 0xFFFF) { return String.fromCharCode(cp); }
        var cu1 = String.fromCharCode(Math.floor((cp - 0x10000) / 0x400) + 0xD800);
        var cu2 = String.fromCharCode(((cp - 0x10000) % 0x400) + 0xDC00);
        return cu1 + cu2;
    }

    IDENTIFIER_START = new Array(0x80);
    for(ch = 0; ch < 0x80; ++ch) {
        IDENTIFIER_START[ch] =
            ch >= 0x61 && ch <= 0x7A ||  // a..z
            ch >= 0x41 && ch <= 0x5A ||  // A..Z
            ch === 0x24 || ch === 0x5F;  // $ (dollar) and _ (underscore)
    }

    IDENTIFIER_PART = new Array(0x80);
    for(ch = 0; ch < 0x80; ++ch) {
        IDENTIFIER_PART[ch] =
            ch >= 0x61 && ch <= 0x7A ||  // a..z
            ch >= 0x41 && ch <= 0x5A ||  // A..Z
            ch >= 0x30 && ch <= 0x39 ||  // 0..9
            ch === 0x24 || ch === 0x5F;  // $ (dollar) and _ (underscore)
    }

    function isIdentifierStartES5(ch) {
        return ch < 0x80 ? IDENTIFIER_START[ch] : ES5Regex.NonAsciiIdentifierStart.test(fromCodePoint(ch));
    }

    function isIdentifierPartES5(ch) {
        return ch < 0x80 ? IDENTIFIER_PART[ch] : ES5Regex.NonAsciiIdentifierPart.test(fromCodePoint(ch));
    }

    function isIdentifierStartES6(ch) {
        return ch < 0x80 ? IDENTIFIER_START[ch] : ES6Regex.NonAsciiIdentifierStart.test(fromCodePoint(ch));
    }

    function isIdentifierPartES6(ch) {
        return ch < 0x80 ? IDENTIFIER_PART[ch] : ES6Regex.NonAsciiIdentifierPart.test(fromCodePoint(ch));
    }

    module.exports = {
        isDecimalDigit: isDecimalDigit,
        isHexDigit: isHexDigit,
        isOctalDigit: isOctalDigit,
        isWhiteSpace: isWhiteSpace,
        isLineTerminator: isLineTerminator,
        isIdentifierStartES5: isIdentifierStartES5,
        isIdentifierPartES5: isIdentifierPartES5,
        isIdentifierStartES6: isIdentifierStartES6,
        isIdentifierPartES6: isIdentifierPartES6
    };
}());
/* vim: set sw=4 ts=4 et tw=80 : */
});

/*
  Copyright (C) 2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

var keyword = createCommonjsModule(function (module) {
(function () {
    'use strict';

    var code$1 = code;

    function isStrictModeReservedWordES6(id) {
        switch (id) {
        case 'implements':
        case 'interface':
        case 'package':
        case 'private':
        case 'protected':
        case 'public':
        case 'static':
        case 'let':
            return true;
        default:
            return false;
        }
    }

    function isKeywordES5(id, strict) {
        // yield should not be treated as keyword under non-strict mode.
        if (!strict && id === 'yield') {
            return false;
        }
        return isKeywordES6(id, strict);
    }

    function isKeywordES6(id, strict) {
        if (strict && isStrictModeReservedWordES6(id)) {
            return true;
        }

        switch (id.length) {
        case 2:
            return (id === 'if') || (id === 'in') || (id === 'do');
        case 3:
            return (id === 'var') || (id === 'for') || (id === 'new') || (id === 'try');
        case 4:
            return (id === 'this') || (id === 'else') || (id === 'case') ||
                (id === 'void') || (id === 'with') || (id === 'enum');
        case 5:
            return (id === 'while') || (id === 'break') || (id === 'catch') ||
                (id === 'throw') || (id === 'const') || (id === 'yield') ||
                (id === 'class') || (id === 'super');
        case 6:
            return (id === 'return') || (id === 'typeof') || (id === 'delete') ||
                (id === 'switch') || (id === 'export') || (id === 'import');
        case 7:
            return (id === 'default') || (id === 'finally') || (id === 'extends');
        case 8:
            return (id === 'function') || (id === 'continue') || (id === 'debugger');
        case 10:
            return (id === 'instanceof');
        default:
            return false;
        }
    }

    function isReservedWordES5(id, strict) {
        return id === 'null' || id === 'true' || id === 'false' || isKeywordES5(id, strict);
    }

    function isReservedWordES6(id, strict) {
        return id === 'null' || id === 'true' || id === 'false' || isKeywordES6(id, strict);
    }

    function isRestrictedWord(id) {
        return id === 'eval' || id === 'arguments';
    }

    function isIdentifierNameES5(id) {
        var i, iz, ch;

        if (id.length === 0) { return false; }

        ch = id.charCodeAt(0);
        if (!code$1.isIdentifierStartES5(ch)) {
            return false;
        }

        for (i = 1, iz = id.length; i < iz; ++i) {
            ch = id.charCodeAt(i);
            if (!code$1.isIdentifierPartES5(ch)) {
                return false;
            }
        }
        return true;
    }

    function decodeUtf16(lead, trail) {
        return (lead - 0xD800) * 0x400 + (trail - 0xDC00) + 0x10000;
    }

    function isIdentifierNameES6(id) {
        var i, iz, ch, lowCh, check;

        if (id.length === 0) { return false; }

        check = code$1.isIdentifierStartES6;
        for (i = 0, iz = id.length; i < iz; ++i) {
            ch = id.charCodeAt(i);
            if (0xD800 <= ch && ch <= 0xDBFF) {
                ++i;
                if (i >= iz) { return false; }
                lowCh = id.charCodeAt(i);
                if (!(0xDC00 <= lowCh && lowCh <= 0xDFFF)) {
                    return false;
                }
                ch = decodeUtf16(ch, lowCh);
            }
            if (!check(ch)) {
                return false;
            }
            check = code$1.isIdentifierPartES6;
        }
        return true;
    }

    function isIdentifierES5(id, strict) {
        return isIdentifierNameES5(id) && !isReservedWordES5(id, strict);
    }

    function isIdentifierES6(id, strict) {
        return isIdentifierNameES6(id) && !isReservedWordES6(id, strict);
    }

    module.exports = {
        isKeywordES5: isKeywordES5,
        isKeywordES6: isKeywordES6,
        isReservedWordES5: isReservedWordES5,
        isReservedWordES6: isReservedWordES6,
        isRestrictedWord: isRestrictedWord,
        isIdentifierNameES5: isIdentifierNameES5,
        isIdentifierNameES6: isIdentifierNameES6,
        isIdentifierES5: isIdentifierES5,
        isIdentifierES6: isIdentifierES6
    };
}());
/* vim: set sw=4 ts=4 et tw=80 : */
});

/*
  Copyright (C) 2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

var utils = createCommonjsModule(function (module, exports) {
(function () {
    'use strict';

    exports.ast = ast;
    exports.code = code;
    exports.keyword = keyword;
}());
/* vim: set sw=4 ts=4 et tw=80 : */
});

/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */

var intToCharMap = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'.split('');

/**
 * Encode an integer in the range of 0 to 63 to a single base 64 digit.
 */
var encode$1 = function (number) {
  if (0 <= number && number < intToCharMap.length) {
    return intToCharMap[number];
  }
  throw new TypeError("Must be between 0 and 63: " + number);
};

/**
 * Decode a single base 64 character code digit to an integer. Returns -1 on
 * failure.
 */
var decode$1 = function (charCode) {
  var bigA = 65;     // 'A'
  var bigZ = 90;     // 'Z'

  var littleA = 97;  // 'a'
  var littleZ = 122; // 'z'

  var zero = 48;     // '0'
  var nine = 57;     // '9'

  var plus = 43;     // '+'
  var slash = 47;    // '/'

  var littleOffset = 26;
  var numberOffset = 52;

  // 0 - 25: ABCDEFGHIJKLMNOPQRSTUVWXYZ
  if (bigA <= charCode && charCode <= bigZ) {
    return (charCode - bigA);
  }

  // 26 - 51: abcdefghijklmnopqrstuvwxyz
  if (littleA <= charCode && charCode <= littleZ) {
    return (charCode - littleA + littleOffset);
  }

  // 52 - 61: 0123456789
  if (zero <= charCode && charCode <= nine) {
    return (charCode - zero + numberOffset);
  }

  // 62: +
  if (charCode == plus) {
    return 62;
  }

  // 63: /
  if (charCode == slash) {
    return 63;
  }

  // Invalid base64 digit.
  return -1;
};

var base64 = {
	encode: encode$1,
	decode: decode$1
};

/* -*- Mode: js; js-indent-level: 2; -*- */

/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 *
 * Based on the Base 64 VLQ implementation in Closure Compiler:
 * https://code.google.com/p/closure-compiler/source/browse/trunk/src/com/google/debugging/sourcemap/Base64VLQ.java
 *
 * Copyright 2011 The Closure Compiler Authors. All rights reserved.
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above
 *    copyright notice, this list of conditions and the following
 *    disclaimer in the documentation and/or other materials provided
 *    with the distribution.
 *  * Neither the name of Google Inc. nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */



// A single base 64 digit can contain 6 bits of data. For the base 64 variable
// length quantities we use in the source map spec, the first bit is the sign,
// the next four bits are the actual value, and the 6th bit is the
// continuation bit. The continuation bit tells us whether there are more
// digits in this value following this digit.
//
//   Continuation
//   |    Sign
//   |    |
//   V    V
//   101011

var VLQ_BASE_SHIFT = 5;

// binary: 100000
var VLQ_BASE = 1 << VLQ_BASE_SHIFT;

// binary: 011111
var VLQ_BASE_MASK = VLQ_BASE - 1;

// binary: 100000
var VLQ_CONTINUATION_BIT = VLQ_BASE;

/**
 * Converts from a two-complement value to a value where the sign bit is
 * placed in the least significant bit.  For example, as decimals:
 *   1 becomes 2 (10 binary), -1 becomes 3 (11 binary)
 *   2 becomes 4 (100 binary), -2 becomes 5 (101 binary)
 */
function toVLQSigned(aValue) {
  return aValue < 0
    ? ((-aValue) << 1) + 1
    : (aValue << 1) + 0;
}

/**
 * Converts to a two-complement value from a value where the sign bit is
 * placed in the least significant bit.  For example, as decimals:
 *   2 (10 binary) becomes 1, 3 (11 binary) becomes -1
 *   4 (100 binary) becomes 2, 5 (101 binary) becomes -2
 */
function fromVLQSigned(aValue) {
  var isNegative = (aValue & 1) === 1;
  var shifted = aValue >> 1;
  return isNegative
    ? -shifted
    : shifted;
}

/**
 * Returns the base 64 VLQ encoded value.
 */
var encode = function base64VLQ_encode(aValue) {
  var encoded = "";
  var digit;

  var vlq = toVLQSigned(aValue);

  do {
    digit = vlq & VLQ_BASE_MASK;
    vlq >>>= VLQ_BASE_SHIFT;
    if (vlq > 0) {
      // There are still more digits in this value, so we must make sure the
      // continuation bit is marked.
      digit |= VLQ_CONTINUATION_BIT;
    }
    encoded += base64.encode(digit);
  } while (vlq > 0);

  return encoded;
};

/**
 * Decodes the next base 64 VLQ value from the given string and returns the
 * value and the rest of the string via the out parameter.
 */
var decode = function base64VLQ_decode(aStr, aIndex, aOutParam) {
  var strLen = aStr.length;
  var result = 0;
  var shift = 0;
  var continuation, digit;

  do {
    if (aIndex >= strLen) {
      throw new Error("Expected more digits in base 64 VLQ value.");
    }

    digit = base64.decode(aStr.charCodeAt(aIndex++));
    if (digit === -1) {
      throw new Error("Invalid base64 digit: " + aStr.charAt(aIndex - 1));
    }

    continuation = !!(digit & VLQ_CONTINUATION_BIT);
    digit &= VLQ_BASE_MASK;
    result = result + (digit << shift);
    shift += VLQ_BASE_SHIFT;
  } while (continuation);

  aOutParam.value = fromVLQSigned(result);
  aOutParam.rest = aIndex;
};

var base64Vlq = {
	encode: encode,
	decode: decode
};

/* -*- Mode: js; js-indent-level: 2; -*- */

var util = createCommonjsModule(function (module, exports) {
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */

/**
 * This is a helper function for getting values from parameter/options
 * objects.
 *
 * @param args The object we are extracting values from
 * @param name The name of the property we are getting.
 * @param defaultValue An optional value to return if the property is missing
 * from the object. If this is not specified and the property is missing, an
 * error will be thrown.
 */
function getArg(aArgs, aName, aDefaultValue) {
  if (aName in aArgs) {
    return aArgs[aName];
  } else if (arguments.length === 3) {
    return aDefaultValue;
  } else {
    throw new Error('"' + aName + '" is a required argument.');
  }
}
exports.getArg = getArg;

var urlRegexp = /^(?:([\w+\-.]+):)?\/\/(?:(\w+:\w+)@)?([\w.-]*)(?::(\d+))?(.*)$/;
var dataUrlRegexp = /^data:.+\,.+$/;

function urlParse(aUrl) {
  var match = aUrl.match(urlRegexp);
  if (!match) {
    return null;
  }
  return {
    scheme: match[1],
    auth: match[2],
    host: match[3],
    port: match[4],
    path: match[5]
  };
}
exports.urlParse = urlParse;

function urlGenerate(aParsedUrl) {
  var url = '';
  if (aParsedUrl.scheme) {
    url += aParsedUrl.scheme + ':';
  }
  url += '//';
  if (aParsedUrl.auth) {
    url += aParsedUrl.auth + '@';
  }
  if (aParsedUrl.host) {
    url += aParsedUrl.host;
  }
  if (aParsedUrl.port) {
    url += ":" + aParsedUrl.port;
  }
  if (aParsedUrl.path) {
    url += aParsedUrl.path;
  }
  return url;
}
exports.urlGenerate = urlGenerate;

/**
 * Normalizes a path, or the path portion of a URL:
 *
 * - Replaces consecutive slashes with one slash.
 * - Removes unnecessary '.' parts.
 * - Removes unnecessary '<dir>/..' parts.
 *
 * Based on code in the Node.js 'path' core module.
 *
 * @param aPath The path or url to normalize.
 */
function normalize(aPath) {
  var path = aPath;
  var url = urlParse(aPath);
  if (url) {
    if (!url.path) {
      return aPath;
    }
    path = url.path;
  }
  var isAbsolute = exports.isAbsolute(path);

  var parts = path.split(/\/+/);
  for (var part, up = 0, i = parts.length - 1; i >= 0; i--) {
    part = parts[i];
    if (part === '.') {
      parts.splice(i, 1);
    } else if (part === '..') {
      up++;
    } else if (up > 0) {
      if (part === '') {
        // The first part is blank if the path is absolute. Trying to go
        // above the root is a no-op. Therefore we can remove all '..' parts
        // directly after the root.
        parts.splice(i + 1, up);
        up = 0;
      } else {
        parts.splice(i, 2);
        up--;
      }
    }
  }
  path = parts.join('/');

  if (path === '') {
    path = isAbsolute ? '/' : '.';
  }

  if (url) {
    url.path = path;
    return urlGenerate(url);
  }
  return path;
}
exports.normalize = normalize;

/**
 * Joins two paths/URLs.
 *
 * @param aRoot The root path or URL.
 * @param aPath The path or URL to be joined with the root.
 *
 * - If aPath is a URL or a data URI, aPath is returned, unless aPath is a
 *   scheme-relative URL: Then the scheme of aRoot, if any, is prepended
 *   first.
 * - Otherwise aPath is a path. If aRoot is a URL, then its path portion
 *   is updated with the result and aRoot is returned. Otherwise the result
 *   is returned.
 *   - If aPath is absolute, the result is aPath.
 *   - Otherwise the two paths are joined with a slash.
 * - Joining for example 'http://' and 'www.example.com' is also supported.
 */
function join(aRoot, aPath) {
  if (aRoot === "") {
    aRoot = ".";
  }
  if (aPath === "") {
    aPath = ".";
  }
  var aPathUrl = urlParse(aPath);
  var aRootUrl = urlParse(aRoot);
  if (aRootUrl) {
    aRoot = aRootUrl.path || '/';
  }

  // `join(foo, '//www.example.org')`
  if (aPathUrl && !aPathUrl.scheme) {
    if (aRootUrl) {
      aPathUrl.scheme = aRootUrl.scheme;
    }
    return urlGenerate(aPathUrl);
  }

  if (aPathUrl || aPath.match(dataUrlRegexp)) {
    return aPath;
  }

  // `join('http://', 'www.example.com')`
  if (aRootUrl && !aRootUrl.host && !aRootUrl.path) {
    aRootUrl.host = aPath;
    return urlGenerate(aRootUrl);
  }

  var joined = aPath.charAt(0) === '/'
    ? aPath
    : normalize(aRoot.replace(/\/+$/, '') + '/' + aPath);

  if (aRootUrl) {
    aRootUrl.path = joined;
    return urlGenerate(aRootUrl);
  }
  return joined;
}
exports.join = join;

exports.isAbsolute = function (aPath) {
  return aPath.charAt(0) === '/' || urlRegexp.test(aPath);
};

/**
 * Make a path relative to a URL or another path.
 *
 * @param aRoot The root path or URL.
 * @param aPath The path or URL to be made relative to aRoot.
 */
function relative(aRoot, aPath) {
  if (aRoot === "") {
    aRoot = ".";
  }

  aRoot = aRoot.replace(/\/$/, '');

  // It is possible for the path to be above the root. In this case, simply
  // checking whether the root is a prefix of the path won't work. Instead, we
  // need to remove components from the root one by one, until either we find
  // a prefix that fits, or we run out of components to remove.
  var level = 0;
  while (aPath.indexOf(aRoot + '/') !== 0) {
    var index = aRoot.lastIndexOf("/");
    if (index < 0) {
      return aPath;
    }

    // If the only part of the root that is left is the scheme (i.e. http://,
    // file:///, etc.), one or more slashes (/), or simply nothing at all, we
    // have exhausted all components, so the path is not relative to the root.
    aRoot = aRoot.slice(0, index);
    if (aRoot.match(/^([^\/]+:\/)?\/*$/)) {
      return aPath;
    }

    ++level;
  }

  // Make sure we add a "../" for each component we removed from the root.
  return Array(level + 1).join("../") + aPath.substr(aRoot.length + 1);
}
exports.relative = relative;

var supportsNullProto = (function () {
  var obj = Object.create(null);
  return !('__proto__' in obj);
}());

function identity (s) {
  return s;
}

/**
 * Because behavior goes wacky when you set `__proto__` on objects, we
 * have to prefix all the strings in our set with an arbitrary character.
 *
 * See https://github.com/mozilla/source-map/pull/31 and
 * https://github.com/mozilla/source-map/issues/30
 *
 * @param String aStr
 */
function toSetString(aStr) {
  if (isProtoString(aStr)) {
    return '$' + aStr;
  }

  return aStr;
}
exports.toSetString = supportsNullProto ? identity : toSetString;

function fromSetString(aStr) {
  if (isProtoString(aStr)) {
    return aStr.slice(1);
  }

  return aStr;
}
exports.fromSetString = supportsNullProto ? identity : fromSetString;

function isProtoString(s) {
  if (!s) {
    return false;
  }

  var length = s.length;

  if (length < 9 /* "__proto__".length */) {
    return false;
  }

  if (s.charCodeAt(length - 1) !== 95  /* '_' */ ||
      s.charCodeAt(length - 2) !== 95  /* '_' */ ||
      s.charCodeAt(length - 3) !== 111 /* 'o' */ ||
      s.charCodeAt(length - 4) !== 116 /* 't' */ ||
      s.charCodeAt(length - 5) !== 111 /* 'o' */ ||
      s.charCodeAt(length - 6) !== 114 /* 'r' */ ||
      s.charCodeAt(length - 7) !== 112 /* 'p' */ ||
      s.charCodeAt(length - 8) !== 95  /* '_' */ ||
      s.charCodeAt(length - 9) !== 95  /* '_' */) {
    return false;
  }

  for (var i = length - 10; i >= 0; i--) {
    if (s.charCodeAt(i) !== 36 /* '$' */) {
      return false;
    }
  }

  return true;
}

/**
 * Comparator between two mappings where the original positions are compared.
 *
 * Optionally pass in `true` as `onlyCompareGenerated` to consider two
 * mappings with the same original source/line/column, but different generated
 * line and column the same. Useful when searching for a mapping with a
 * stubbed out mapping.
 */
function compareByOriginalPositions(mappingA, mappingB, onlyCompareOriginal) {
  var cmp = strcmp(mappingA.source, mappingB.source);
  if (cmp !== 0) {
    return cmp;
  }

  cmp = mappingA.originalLine - mappingB.originalLine;
  if (cmp !== 0) {
    return cmp;
  }

  cmp = mappingA.originalColumn - mappingB.originalColumn;
  if (cmp !== 0 || onlyCompareOriginal) {
    return cmp;
  }

  cmp = mappingA.generatedColumn - mappingB.generatedColumn;
  if (cmp !== 0) {
    return cmp;
  }

  cmp = mappingA.generatedLine - mappingB.generatedLine;
  if (cmp !== 0) {
    return cmp;
  }

  return strcmp(mappingA.name, mappingB.name);
}
exports.compareByOriginalPositions = compareByOriginalPositions;

/**
 * Comparator between two mappings with deflated source and name indices where
 * the generated positions are compared.
 *
 * Optionally pass in `true` as `onlyCompareGenerated` to consider two
 * mappings with the same generated line and column, but different
 * source/name/original line and column the same. Useful when searching for a
 * mapping with a stubbed out mapping.
 */
function compareByGeneratedPositionsDeflated(mappingA, mappingB, onlyCompareGenerated) {
  var cmp = mappingA.generatedLine - mappingB.generatedLine;
  if (cmp !== 0) {
    return cmp;
  }

  cmp = mappingA.generatedColumn - mappingB.generatedColumn;
  if (cmp !== 0 || onlyCompareGenerated) {
    return cmp;
  }

  cmp = strcmp(mappingA.source, mappingB.source);
  if (cmp !== 0) {
    return cmp;
  }

  cmp = mappingA.originalLine - mappingB.originalLine;
  if (cmp !== 0) {
    return cmp;
  }

  cmp = mappingA.originalColumn - mappingB.originalColumn;
  if (cmp !== 0) {
    return cmp;
  }

  return strcmp(mappingA.name, mappingB.name);
}
exports.compareByGeneratedPositionsDeflated = compareByGeneratedPositionsDeflated;

function strcmp(aStr1, aStr2) {
  if (aStr1 === aStr2) {
    return 0;
  }

  if (aStr1 === null) {
    return 1; // aStr2 !== null
  }

  if (aStr2 === null) {
    return -1; // aStr1 !== null
  }

  if (aStr1 > aStr2) {
    return 1;
  }

  return -1;
}

/**
 * Comparator between two mappings with inflated source and name strings where
 * the generated positions are compared.
 */
function compareByGeneratedPositionsInflated(mappingA, mappingB) {
  var cmp = mappingA.generatedLine - mappingB.generatedLine;
  if (cmp !== 0) {
    return cmp;
  }

  cmp = mappingA.generatedColumn - mappingB.generatedColumn;
  if (cmp !== 0) {
    return cmp;
  }

  cmp = strcmp(mappingA.source, mappingB.source);
  if (cmp !== 0) {
    return cmp;
  }

  cmp = mappingA.originalLine - mappingB.originalLine;
  if (cmp !== 0) {
    return cmp;
  }

  cmp = mappingA.originalColumn - mappingB.originalColumn;
  if (cmp !== 0) {
    return cmp;
  }

  return strcmp(mappingA.name, mappingB.name);
}
exports.compareByGeneratedPositionsInflated = compareByGeneratedPositionsInflated;

/**
 * Strip any JSON XSSI avoidance prefix from the string (as documented
 * in the source maps specification), and then parse the string as
 * JSON.
 */
function parseSourceMapInput(str) {
  return JSON.parse(str.replace(/^\)]}'[^\n]*\n/, ''));
}
exports.parseSourceMapInput = parseSourceMapInput;

/**
 * Compute the URL of a source given the the source root, the source's
 * URL, and the source map's URL.
 */
function computeSourceURL(sourceRoot, sourceURL, sourceMapURL) {
  sourceURL = sourceURL || '';

  if (sourceRoot) {
    // This follows what Chrome does.
    if (sourceRoot[sourceRoot.length - 1] !== '/' && sourceURL[0] !== '/') {
      sourceRoot += '/';
    }
    // The spec says:
    //   Line 4: An optional source root, useful for relocating source
    //   files on a server or removing repeated values in the
    //   “sources” entry.  This value is prepended to the individual
    //   entries in the “source” field.
    sourceURL = sourceRoot + sourceURL;
  }

  // Historically, SourceMapConsumer did not take the sourceMapURL as
  // a parameter.  This mode is still somewhat supported, which is why
  // this code block is conditional.  However, it's preferable to pass
  // the source map URL to SourceMapConsumer, so that this function
  // can implement the source URL resolution algorithm as outlined in
  // the spec.  This block is basically the equivalent of:
  //    new URL(sourceURL, sourceMapURL).toString()
  // ... except it avoids using URL, which wasn't available in the
  // older releases of node still supported by this library.
  //
  // The spec says:
  //   If the sources are not absolute URLs after prepending of the
  //   “sourceRoot”, the sources are resolved relative to the
  //   SourceMap (like resolving script src in a html document).
  if (sourceMapURL) {
    var parsed = urlParse(sourceMapURL);
    if (!parsed) {
      throw new Error("sourceMapURL could not be parsed");
    }
    if (parsed.path) {
      // Strip the last path component, but keep the "/".
      var index = parsed.path.lastIndexOf('/');
      if (index >= 0) {
        parsed.path = parsed.path.substring(0, index + 1);
      }
    }
    sourceURL = join(urlGenerate(parsed), sourceURL);
  }

  return normalize(sourceURL);
}
exports.computeSourceURL = computeSourceURL;
});

/* -*- Mode: js; js-indent-level: 2; -*- */

/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */


var has = Object.prototype.hasOwnProperty;
var hasNativeMap = typeof Map !== "undefined";

/**
 * A data structure which is a combination of an array and a set. Adding a new
 * member is O(1), testing for membership is O(1), and finding the index of an
 * element is O(1). Removing elements from the set is not supported. Only
 * strings are supported for membership.
 */
function ArraySet$2() {
  this._array = [];
  this._set = hasNativeMap ? new Map() : Object.create(null);
}

/**
 * Static method for creating ArraySet instances from an existing array.
 */
ArraySet$2.fromArray = function ArraySet_fromArray(aArray, aAllowDuplicates) {
  var set = new ArraySet$2();
  for (var i = 0, len = aArray.length; i < len; i++) {
    set.add(aArray[i], aAllowDuplicates);
  }
  return set;
};

/**
 * Return how many unique items are in this ArraySet. If duplicates have been
 * added, than those do not count towards the size.
 *
 * @returns Number
 */
ArraySet$2.prototype.size = function ArraySet_size() {
  return hasNativeMap ? this._set.size : Object.getOwnPropertyNames(this._set).length;
};

/**
 * Add the given string to this set.
 *
 * @param String aStr
 */
ArraySet$2.prototype.add = function ArraySet_add(aStr, aAllowDuplicates) {
  var sStr = hasNativeMap ? aStr : util.toSetString(aStr);
  var isDuplicate = hasNativeMap ? this.has(aStr) : has.call(this._set, sStr);
  var idx = this._array.length;
  if (!isDuplicate || aAllowDuplicates) {
    this._array.push(aStr);
  }
  if (!isDuplicate) {
    if (hasNativeMap) {
      this._set.set(aStr, idx);
    } else {
      this._set[sStr] = idx;
    }
  }
};

/**
 * Is the given string a member of this set?
 *
 * @param String aStr
 */
ArraySet$2.prototype.has = function ArraySet_has(aStr) {
  if (hasNativeMap) {
    return this._set.has(aStr);
  } else {
    var sStr = util.toSetString(aStr);
    return has.call(this._set, sStr);
  }
};

/**
 * What is the index of the given string in the array?
 *
 * @param String aStr
 */
ArraySet$2.prototype.indexOf = function ArraySet_indexOf(aStr) {
  if (hasNativeMap) {
    var idx = this._set.get(aStr);
    if (idx >= 0) {
        return idx;
    }
  } else {
    var sStr = util.toSetString(aStr);
    if (has.call(this._set, sStr)) {
      return this._set[sStr];
    }
  }

  throw new Error('"' + aStr + '" is not in the set.');
};

/**
 * What is the element at the given index?
 *
 * @param Number aIdx
 */
ArraySet$2.prototype.at = function ArraySet_at(aIdx) {
  if (aIdx >= 0 && aIdx < this._array.length) {
    return this._array[aIdx];
  }
  throw new Error('No element indexed by ' + aIdx);
};

/**
 * Returns the array representation of this set (which has the proper indices
 * indicated by indexOf). Note that this is a copy of the internal array used
 * for storing the members so that no one can mess with internal state.
 */
ArraySet$2.prototype.toArray = function ArraySet_toArray() {
  return this._array.slice();
};

var ArraySet_1 = ArraySet$2;

var arraySet = {
	ArraySet: ArraySet_1
};

/* -*- Mode: js; js-indent-level: 2; -*- */

/*
 * Copyright 2014 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */



/**
 * Determine whether mappingB is after mappingA with respect to generated
 * position.
 */
function generatedPositionAfter(mappingA, mappingB) {
  // Optimized for most common case
  var lineA = mappingA.generatedLine;
  var lineB = mappingB.generatedLine;
  var columnA = mappingA.generatedColumn;
  var columnB = mappingB.generatedColumn;
  return lineB > lineA || lineB == lineA && columnB >= columnA ||
         util.compareByGeneratedPositionsInflated(mappingA, mappingB) <= 0;
}

/**
 * A data structure to provide a sorted view of accumulated mappings in a
 * performance conscious manner. It trades a neglibable overhead in general
 * case for a large speedup in case of mappings being added in order.
 */
function MappingList$1() {
  this._array = [];
  this._sorted = true;
  // Serves as infimum
  this._last = {generatedLine: -1, generatedColumn: 0};
}

/**
 * Iterate through internal items. This method takes the same arguments that
 * `Array.prototype.forEach` takes.
 *
 * NOTE: The order of the mappings is NOT guaranteed.
 */
MappingList$1.prototype.unsortedForEach =
  function MappingList_forEach(aCallback, aThisArg) {
    this._array.forEach(aCallback, aThisArg);
  };

/**
 * Add the given source mapping.
 *
 * @param Object aMapping
 */
MappingList$1.prototype.add = function MappingList_add(aMapping) {
  if (generatedPositionAfter(this._last, aMapping)) {
    this._last = aMapping;
    this._array.push(aMapping);
  } else {
    this._sorted = false;
    this._array.push(aMapping);
  }
};

/**
 * Returns the flat, sorted array of mappings. The mappings are sorted by
 * generated position.
 *
 * WARNING: This method returns internal data without copying, for
 * performance. The return value must NOT be mutated, and should be treated as
 * an immutable borrow. If you want to take ownership, you must make your own
 * copy.
 */
MappingList$1.prototype.toArray = function MappingList_toArray() {
  if (!this._sorted) {
    this._array.sort(util.compareByGeneratedPositionsInflated);
    this._sorted = true;
  }
  return this._array;
};

var MappingList_1 = MappingList$1;

var mappingList = {
	MappingList: MappingList_1
};

/* -*- Mode: js; js-indent-level: 2; -*- */

/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */



var ArraySet$1 = arraySet.ArraySet;
var MappingList = mappingList.MappingList;

/**
 * An instance of the SourceMapGenerator represents a source map which is
 * being built incrementally. You may pass an object with the following
 * properties:
 *
 *   - file: The filename of the generated source.
 *   - sourceRoot: A root for all relative URLs in this source map.
 */
function SourceMapGenerator$2(aArgs) {
  if (!aArgs) {
    aArgs = {};
  }
  this._file = util.getArg(aArgs, 'file', null);
  this._sourceRoot = util.getArg(aArgs, 'sourceRoot', null);
  this._skipValidation = util.getArg(aArgs, 'skipValidation', false);
  this._sources = new ArraySet$1();
  this._names = new ArraySet$1();
  this._mappings = new MappingList();
  this._sourcesContents = null;
}

SourceMapGenerator$2.prototype._version = 3;

/**
 * Creates a new SourceMapGenerator based on a SourceMapConsumer
 *
 * @param aSourceMapConsumer The SourceMap.
 */
SourceMapGenerator$2.fromSourceMap =
  function SourceMapGenerator_fromSourceMap(aSourceMapConsumer) {
    var sourceRoot = aSourceMapConsumer.sourceRoot;
    var generator = new SourceMapGenerator$2({
      file: aSourceMapConsumer.file,
      sourceRoot: sourceRoot
    });
    aSourceMapConsumer.eachMapping(function (mapping) {
      var newMapping = {
        generated: {
          line: mapping.generatedLine,
          column: mapping.generatedColumn
        }
      };

      if (mapping.source != null) {
        newMapping.source = mapping.source;
        if (sourceRoot != null) {
          newMapping.source = util.relative(sourceRoot, newMapping.source);
        }

        newMapping.original = {
          line: mapping.originalLine,
          column: mapping.originalColumn
        };

        if (mapping.name != null) {
          newMapping.name = mapping.name;
        }
      }

      generator.addMapping(newMapping);
    });
    aSourceMapConsumer.sources.forEach(function (sourceFile) {
      var sourceRelative = sourceFile;
      if (sourceRoot !== null) {
        sourceRelative = util.relative(sourceRoot, sourceFile);
      }

      if (!generator._sources.has(sourceRelative)) {
        generator._sources.add(sourceRelative);
      }

      var content = aSourceMapConsumer.sourceContentFor(sourceFile);
      if (content != null) {
        generator.setSourceContent(sourceFile, content);
      }
    });
    return generator;
  };

/**
 * Add a single mapping from original source line and column to the generated
 * source's line and column for this source map being created. The mapping
 * object should have the following properties:
 *
 *   - generated: An object with the generated line and column positions.
 *   - original: An object with the original line and column positions.
 *   - source: The original source file (relative to the sourceRoot).
 *   - name: An optional original token name for this mapping.
 */
SourceMapGenerator$2.prototype.addMapping =
  function SourceMapGenerator_addMapping(aArgs) {
    var generated = util.getArg(aArgs, 'generated');
    var original = util.getArg(aArgs, 'original', null);
    var source = util.getArg(aArgs, 'source', null);
    var name = util.getArg(aArgs, 'name', null);

    if (!this._skipValidation) {
      this._validateMapping(generated, original, source, name);
    }

    if (source != null) {
      source = String(source);
      if (!this._sources.has(source)) {
        this._sources.add(source);
      }
    }

    if (name != null) {
      name = String(name);
      if (!this._names.has(name)) {
        this._names.add(name);
      }
    }

    this._mappings.add({
      generatedLine: generated.line,
      generatedColumn: generated.column,
      originalLine: original != null && original.line,
      originalColumn: original != null && original.column,
      source: source,
      name: name
    });
  };

/**
 * Set the source content for a source file.
 */
SourceMapGenerator$2.prototype.setSourceContent =
  function SourceMapGenerator_setSourceContent(aSourceFile, aSourceContent) {
    var source = aSourceFile;
    if (this._sourceRoot != null) {
      source = util.relative(this._sourceRoot, source);
    }

    if (aSourceContent != null) {
      // Add the source content to the _sourcesContents map.
      // Create a new _sourcesContents map if the property is null.
      if (!this._sourcesContents) {
        this._sourcesContents = Object.create(null);
      }
      this._sourcesContents[util.toSetString(source)] = aSourceContent;
    } else if (this._sourcesContents) {
      // Remove the source file from the _sourcesContents map.
      // If the _sourcesContents map is empty, set the property to null.
      delete this._sourcesContents[util.toSetString(source)];
      if (Object.keys(this._sourcesContents).length === 0) {
        this._sourcesContents = null;
      }
    }
  };

/**
 * Applies the mappings of a sub-source-map for a specific source file to the
 * source map being generated. Each mapping to the supplied source file is
 * rewritten using the supplied source map. Note: The resolution for the
 * resulting mappings is the minimium of this map and the supplied map.
 *
 * @param aSourceMapConsumer The source map to be applied.
 * @param aSourceFile Optional. The filename of the source file.
 *        If omitted, SourceMapConsumer's file property will be used.
 * @param aSourceMapPath Optional. The dirname of the path to the source map
 *        to be applied. If relative, it is relative to the SourceMapConsumer.
 *        This parameter is needed when the two source maps aren't in the same
 *        directory, and the source map to be applied contains relative source
 *        paths. If so, those relative source paths need to be rewritten
 *        relative to the SourceMapGenerator.
 */
SourceMapGenerator$2.prototype.applySourceMap =
  function SourceMapGenerator_applySourceMap(aSourceMapConsumer, aSourceFile, aSourceMapPath) {
    var sourceFile = aSourceFile;
    // If aSourceFile is omitted, we will use the file property of the SourceMap
    if (aSourceFile == null) {
      if (aSourceMapConsumer.file == null) {
        throw new Error(
          'SourceMapGenerator.prototype.applySourceMap requires either an explicit source file, ' +
          'or the source map\'s "file" property. Both were omitted.'
        );
      }
      sourceFile = aSourceMapConsumer.file;
    }
    var sourceRoot = this._sourceRoot;
    // Make "sourceFile" relative if an absolute Url is passed.
    if (sourceRoot != null) {
      sourceFile = util.relative(sourceRoot, sourceFile);
    }
    // Applying the SourceMap can add and remove items from the sources and
    // the names array.
    var newSources = new ArraySet$1();
    var newNames = new ArraySet$1();

    // Find mappings for the "sourceFile"
    this._mappings.unsortedForEach(function (mapping) {
      if (mapping.source === sourceFile && mapping.originalLine != null) {
        // Check if it can be mapped by the source map, then update the mapping.
        var original = aSourceMapConsumer.originalPositionFor({
          line: mapping.originalLine,
          column: mapping.originalColumn
        });
        if (original.source != null) {
          // Copy mapping
          mapping.source = original.source;
          if (aSourceMapPath != null) {
            mapping.source = util.join(aSourceMapPath, mapping.source);
          }
          if (sourceRoot != null) {
            mapping.source = util.relative(sourceRoot, mapping.source);
          }
          mapping.originalLine = original.line;
          mapping.originalColumn = original.column;
          if (original.name != null) {
            mapping.name = original.name;
          }
        }
      }

      var source = mapping.source;
      if (source != null && !newSources.has(source)) {
        newSources.add(source);
      }

      var name = mapping.name;
      if (name != null && !newNames.has(name)) {
        newNames.add(name);
      }

    }, this);
    this._sources = newSources;
    this._names = newNames;

    // Copy sourcesContents of applied map.
    aSourceMapConsumer.sources.forEach(function (sourceFile) {
      var content = aSourceMapConsumer.sourceContentFor(sourceFile);
      if (content != null) {
        if (aSourceMapPath != null) {
          sourceFile = util.join(aSourceMapPath, sourceFile);
        }
        if (sourceRoot != null) {
          sourceFile = util.relative(sourceRoot, sourceFile);
        }
        this.setSourceContent(sourceFile, content);
      }
    }, this);
  };

/**
 * A mapping can have one of the three levels of data:
 *
 *   1. Just the generated position.
 *   2. The Generated position, original position, and original source.
 *   3. Generated and original position, original source, as well as a name
 *      token.
 *
 * To maintain consistency, we validate that any new mapping being added falls
 * in to one of these categories.
 */
SourceMapGenerator$2.prototype._validateMapping =
  function SourceMapGenerator_validateMapping(aGenerated, aOriginal, aSource,
                                              aName) {
    // When aOriginal is truthy but has empty values for .line and .column,
    // it is most likely a programmer error. In this case we throw a very
    // specific error message to try to guide them the right way.
    // For example: https://github.com/Polymer/polymer-bundler/pull/519
    if (aOriginal && typeof aOriginal.line !== 'number' && typeof aOriginal.column !== 'number') {
        throw new Error(
            'original.line and original.column are not numbers -- you probably meant to omit ' +
            'the original mapping entirely and only map the generated position. If so, pass ' +
            'null for the original mapping instead of an object with empty or null values.'
        );
    }

    if (aGenerated && 'line' in aGenerated && 'column' in aGenerated
        && aGenerated.line > 0 && aGenerated.column >= 0
        && !aOriginal && !aSource && !aName) {
      // Case 1.
      return;
    }
    else if (aGenerated && 'line' in aGenerated && 'column' in aGenerated
             && aOriginal && 'line' in aOriginal && 'column' in aOriginal
             && aGenerated.line > 0 && aGenerated.column >= 0
             && aOriginal.line > 0 && aOriginal.column >= 0
             && aSource) {
      // Cases 2 and 3.
      return;
    }
    else {
      throw new Error('Invalid mapping: ' + JSON.stringify({
        generated: aGenerated,
        source: aSource,
        original: aOriginal,
        name: aName
      }));
    }
  };

/**
 * Serialize the accumulated mappings in to the stream of base 64 VLQs
 * specified by the source map format.
 */
SourceMapGenerator$2.prototype._serializeMappings =
  function SourceMapGenerator_serializeMappings() {
    var previousGeneratedColumn = 0;
    var previousGeneratedLine = 1;
    var previousOriginalColumn = 0;
    var previousOriginalLine = 0;
    var previousName = 0;
    var previousSource = 0;
    var result = '';
    var next;
    var mapping;
    var nameIdx;
    var sourceIdx;

    var mappings = this._mappings.toArray();
    for (var i = 0, len = mappings.length; i < len; i++) {
      mapping = mappings[i];
      next = '';

      if (mapping.generatedLine !== previousGeneratedLine) {
        previousGeneratedColumn = 0;
        while (mapping.generatedLine !== previousGeneratedLine) {
          next += ';';
          previousGeneratedLine++;
        }
      }
      else {
        if (i > 0) {
          if (!util.compareByGeneratedPositionsInflated(mapping, mappings[i - 1])) {
            continue;
          }
          next += ',';
        }
      }

      next += base64Vlq.encode(mapping.generatedColumn
                                 - previousGeneratedColumn);
      previousGeneratedColumn = mapping.generatedColumn;

      if (mapping.source != null) {
        sourceIdx = this._sources.indexOf(mapping.source);
        next += base64Vlq.encode(sourceIdx - previousSource);
        previousSource = sourceIdx;

        // lines are stored 0-based in SourceMap spec version 3
        next += base64Vlq.encode(mapping.originalLine - 1
                                   - previousOriginalLine);
        previousOriginalLine = mapping.originalLine - 1;

        next += base64Vlq.encode(mapping.originalColumn
                                   - previousOriginalColumn);
        previousOriginalColumn = mapping.originalColumn;

        if (mapping.name != null) {
          nameIdx = this._names.indexOf(mapping.name);
          next += base64Vlq.encode(nameIdx - previousName);
          previousName = nameIdx;
        }
      }

      result += next;
    }

    return result;
  };

SourceMapGenerator$2.prototype._generateSourcesContent =
  function SourceMapGenerator_generateSourcesContent(aSources, aSourceRoot) {
    return aSources.map(function (source) {
      if (!this._sourcesContents) {
        return null;
      }
      if (aSourceRoot != null) {
        source = util.relative(aSourceRoot, source);
      }
      var key = util.toSetString(source);
      return Object.prototype.hasOwnProperty.call(this._sourcesContents, key)
        ? this._sourcesContents[key]
        : null;
    }, this);
  };

/**
 * Externalize the source map.
 */
SourceMapGenerator$2.prototype.toJSON =
  function SourceMapGenerator_toJSON() {
    var map = {
      version: this._version,
      sources: this._sources.toArray(),
      names: this._names.toArray(),
      mappings: this._serializeMappings()
    };
    if (this._file != null) {
      map.file = this._file;
    }
    if (this._sourceRoot != null) {
      map.sourceRoot = this._sourceRoot;
    }
    if (this._sourcesContents) {
      map.sourcesContent = this._generateSourcesContent(map.sources, map.sourceRoot);
    }

    return map;
  };

/**
 * Render the source map being generated to a string.
 */
SourceMapGenerator$2.prototype.toString =
  function SourceMapGenerator_toString() {
    return JSON.stringify(this.toJSON());
  };

var SourceMapGenerator_1 = SourceMapGenerator$2;

var sourceMapGenerator = {
	SourceMapGenerator: SourceMapGenerator_1
};

/* -*- Mode: js; js-indent-level: 2; -*- */

var binarySearch = createCommonjsModule(function (module, exports) {
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */

exports.GREATEST_LOWER_BOUND = 1;
exports.LEAST_UPPER_BOUND = 2;

/**
 * Recursive implementation of binary search.
 *
 * @param aLow Indices here and lower do not contain the needle.
 * @param aHigh Indices here and higher do not contain the needle.
 * @param aNeedle The element being searched for.
 * @param aHaystack The non-empty array being searched.
 * @param aCompare Function which takes two elements and returns -1, 0, or 1.
 * @param aBias Either 'binarySearch.GREATEST_LOWER_BOUND' or
 *     'binarySearch.LEAST_UPPER_BOUND'. Specifies whether to return the
 *     closest element that is smaller than or greater than the one we are
 *     searching for, respectively, if the exact element cannot be found.
 */
function recursiveSearch(aLow, aHigh, aNeedle, aHaystack, aCompare, aBias) {
  // This function terminates when one of the following is true:
  //
  //   1. We find the exact element we are looking for.
  //
  //   2. We did not find the exact element, but we can return the index of
  //      the next-closest element.
  //
  //   3. We did not find the exact element, and there is no next-closest
  //      element than the one we are searching for, so we return -1.
  var mid = Math.floor((aHigh - aLow) / 2) + aLow;
  var cmp = aCompare(aNeedle, aHaystack[mid], true);
  if (cmp === 0) {
    // Found the element we are looking for.
    return mid;
  }
  else if (cmp > 0) {
    // Our needle is greater than aHaystack[mid].
    if (aHigh - mid > 1) {
      // The element is in the upper half.
      return recursiveSearch(mid, aHigh, aNeedle, aHaystack, aCompare, aBias);
    }

    // The exact needle element was not found in this haystack. Determine if
    // we are in termination case (3) or (2) and return the appropriate thing.
    if (aBias == exports.LEAST_UPPER_BOUND) {
      return aHigh < aHaystack.length ? aHigh : -1;
    } else {
      return mid;
    }
  }
  else {
    // Our needle is less than aHaystack[mid].
    if (mid - aLow > 1) {
      // The element is in the lower half.
      return recursiveSearch(aLow, mid, aNeedle, aHaystack, aCompare, aBias);
    }

    // we are in termination case (3) or (2) and return the appropriate thing.
    if (aBias == exports.LEAST_UPPER_BOUND) {
      return mid;
    } else {
      return aLow < 0 ? -1 : aLow;
    }
  }
}

/**
 * This is an implementation of binary search which will always try and return
 * the index of the closest element if there is no exact hit. This is because
 * mappings between original and generated line/col pairs are single points,
 * and there is an implicit region between each of them, so a miss just means
 * that you aren't on the very start of a region.
 *
 * @param aNeedle The element you are looking for.
 * @param aHaystack The array that is being searched.
 * @param aCompare A function which takes the needle and an element in the
 *     array and returns -1, 0, or 1 depending on whether the needle is less
 *     than, equal to, or greater than the element, respectively.
 * @param aBias Either 'binarySearch.GREATEST_LOWER_BOUND' or
 *     'binarySearch.LEAST_UPPER_BOUND'. Specifies whether to return the
 *     closest element that is smaller than or greater than the one we are
 *     searching for, respectively, if the exact element cannot be found.
 *     Defaults to 'binarySearch.GREATEST_LOWER_BOUND'.
 */
exports.search = function search(aNeedle, aHaystack, aCompare, aBias) {
  if (aHaystack.length === 0) {
    return -1;
  }

  var index = recursiveSearch(-1, aHaystack.length, aNeedle, aHaystack,
                              aCompare, aBias || exports.GREATEST_LOWER_BOUND);
  if (index < 0) {
    return -1;
  }

  // We have found either the exact element, or the next-closest element than
  // the one we are searching for. However, there may be more than one such
  // element. Make sure we always return the smallest of these.
  while (index - 1 >= 0) {
    if (aCompare(aHaystack[index], aHaystack[index - 1], true) !== 0) {
      break;
    }
    --index;
  }

  return index;
};
});

/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */

// It turns out that some (most?) JavaScript engines don't self-host
// `Array.prototype.sort`. This makes sense because C++ will likely remain
// faster than JS when doing raw CPU-intensive sorting. However, when using a
// custom comparator function, calling back and forth between the VM's C++ and
// JIT'd JS is rather slow *and* loses JIT type information, resulting in
// worse generated code for the comparator function than would be optimal. In
// fact, when sorting with a comparator, these costs outweigh the benefits of
// sorting in C++. By using our own JS-implemented Quick Sort (below), we get
// a ~3500ms mean speed-up in `bench/bench.html`.

/**
 * Swap the elements indexed by `x` and `y` in the array `ary`.
 *
 * @param {Array} ary
 *        The array.
 * @param {Number} x
 *        The index of the first item.
 * @param {Number} y
 *        The index of the second item.
 */
function swap(ary, x, y) {
  var temp = ary[x];
  ary[x] = ary[y];
  ary[y] = temp;
}

/**
 * Returns a random integer within the range `low .. high` inclusive.
 *
 * @param {Number} low
 *        The lower bound on the range.
 * @param {Number} high
 *        The upper bound on the range.
 */
function randomIntInRange(low, high) {
  return Math.round(low + (Math.random() * (high - low)));
}

/**
 * The Quick Sort algorithm.
 *
 * @param {Array} ary
 *        An array to sort.
 * @param {function} comparator
 *        Function to use to compare two items.
 * @param {Number} p
 *        Start index of the array
 * @param {Number} r
 *        End index of the array
 */
function doQuickSort(ary, comparator, p, r) {
  // If our lower bound is less than our upper bound, we (1) partition the
  // array into two pieces and (2) recurse on each half. If it is not, this is
  // the empty array and our base case.

  if (p < r) {
    // (1) Partitioning.
    //
    // The partitioning chooses a pivot between `p` and `r` and moves all
    // elements that are less than or equal to the pivot to the before it, and
    // all the elements that are greater than it after it. The effect is that
    // once partition is done, the pivot is in the exact place it will be when
    // the array is put in sorted order, and it will not need to be moved
    // again. This runs in O(n) time.

    // Always choose a random pivot so that an input array which is reverse
    // sorted does not cause O(n^2) running time.
    var pivotIndex = randomIntInRange(p, r);
    var i = p - 1;

    swap(ary, pivotIndex, r);
    var pivot = ary[r];

    // Immediately after `j` is incremented in this loop, the following hold
    // true:
    //
    //   * Every element in `ary[p .. i]` is less than or equal to the pivot.
    //
    //   * Every element in `ary[i+1 .. j-1]` is greater than the pivot.
    for (var j = p; j < r; j++) {
      if (comparator(ary[j], pivot) <= 0) {
        i += 1;
        swap(ary, i, j);
      }
    }

    swap(ary, i + 1, j);
    var q = i + 1;

    // (2) Recurse on each half.

    doQuickSort(ary, comparator, p, q - 1);
    doQuickSort(ary, comparator, q + 1, r);
  }
}

/**
 * Sort the given array in-place with the given comparator function.
 *
 * @param {Array} ary
 *        An array to sort.
 * @param {function} comparator
 *        Function to use to compare two items.
 */
var quickSort_1 = function (ary, comparator) {
  doQuickSort(ary, comparator, 0, ary.length - 1);
};

var quickSort$1 = {
	quickSort: quickSort_1
};

/* -*- Mode: js; js-indent-level: 2; -*- */

/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */



var ArraySet = arraySet.ArraySet;

var quickSort = quickSort$1.quickSort;

function SourceMapConsumer$1(aSourceMap, aSourceMapURL) {
  var sourceMap = aSourceMap;
  if (typeof aSourceMap === 'string') {
    sourceMap = util.parseSourceMapInput(aSourceMap);
  }

  return sourceMap.sections != null
    ? new IndexedSourceMapConsumer(sourceMap, aSourceMapURL)
    : new BasicSourceMapConsumer(sourceMap, aSourceMapURL);
}

SourceMapConsumer$1.fromSourceMap = function(aSourceMap, aSourceMapURL) {
  return BasicSourceMapConsumer.fromSourceMap(aSourceMap, aSourceMapURL);
};

/**
 * The version of the source mapping spec that we are consuming.
 */
SourceMapConsumer$1.prototype._version = 3;

// `__generatedMappings` and `__originalMappings` are arrays that hold the
// parsed mapping coordinates from the source map's "mappings" attribute. They
// are lazily instantiated, accessed via the `_generatedMappings` and
// `_originalMappings` getters respectively, and we only parse the mappings
// and create these arrays once queried for a source location. We jump through
// these hoops because there can be many thousands of mappings, and parsing
// them is expensive, so we only want to do it if we must.
//
// Each object in the arrays is of the form:
//
//     {
//       generatedLine: The line number in the generated code,
//       generatedColumn: The column number in the generated code,
//       source: The path to the original source file that generated this
//               chunk of code,
//       originalLine: The line number in the original source that
//                     corresponds to this chunk of generated code,
//       originalColumn: The column number in the original source that
//                       corresponds to this chunk of generated code,
//       name: The name of the original symbol which generated this chunk of
//             code.
//     }
//
// All properties except for `generatedLine` and `generatedColumn` can be
// `null`.
//
// `_generatedMappings` is ordered by the generated positions.
//
// `_originalMappings` is ordered by the original positions.

SourceMapConsumer$1.prototype.__generatedMappings = null;
Object.defineProperty(SourceMapConsumer$1.prototype, '_generatedMappings', {
  configurable: true,
  enumerable: true,
  get: function () {
    if (!this.__generatedMappings) {
      this._parseMappings(this._mappings, this.sourceRoot);
    }

    return this.__generatedMappings;
  }
});

SourceMapConsumer$1.prototype.__originalMappings = null;
Object.defineProperty(SourceMapConsumer$1.prototype, '_originalMappings', {
  configurable: true,
  enumerable: true,
  get: function () {
    if (!this.__originalMappings) {
      this._parseMappings(this._mappings, this.sourceRoot);
    }

    return this.__originalMappings;
  }
});

SourceMapConsumer$1.prototype._charIsMappingSeparator =
  function SourceMapConsumer_charIsMappingSeparator(aStr, index) {
    var c = aStr.charAt(index);
    return c === ";" || c === ",";
  };

/**
 * Parse the mappings in a string in to a data structure which we can easily
 * query (the ordered arrays in the `this.__generatedMappings` and
 * `this.__originalMappings` properties).
 */
SourceMapConsumer$1.prototype._parseMappings =
  function SourceMapConsumer_parseMappings(aStr, aSourceRoot) {
    throw new Error("Subclasses must implement _parseMappings");
  };

SourceMapConsumer$1.GENERATED_ORDER = 1;
SourceMapConsumer$1.ORIGINAL_ORDER = 2;

SourceMapConsumer$1.GREATEST_LOWER_BOUND = 1;
SourceMapConsumer$1.LEAST_UPPER_BOUND = 2;

/**
 * Iterate over each mapping between an original source/line/column and a
 * generated line/column in this source map.
 *
 * @param Function aCallback
 *        The function that is called with each mapping.
 * @param Object aContext
 *        Optional. If specified, this object will be the value of `this` every
 *        time that `aCallback` is called.
 * @param aOrder
 *        Either `SourceMapConsumer.GENERATED_ORDER` or
 *        `SourceMapConsumer.ORIGINAL_ORDER`. Specifies whether you want to
 *        iterate over the mappings sorted by the generated file's line/column
 *        order or the original's source/line/column order, respectively. Defaults to
 *        `SourceMapConsumer.GENERATED_ORDER`.
 */
SourceMapConsumer$1.prototype.eachMapping =
  function SourceMapConsumer_eachMapping(aCallback, aContext, aOrder) {
    var context = aContext || null;
    var order = aOrder || SourceMapConsumer$1.GENERATED_ORDER;

    var mappings;
    switch (order) {
    case SourceMapConsumer$1.GENERATED_ORDER:
      mappings = this._generatedMappings;
      break;
    case SourceMapConsumer$1.ORIGINAL_ORDER:
      mappings = this._originalMappings;
      break;
    default:
      throw new Error("Unknown order of iteration.");
    }

    var sourceRoot = this.sourceRoot;
    mappings.map(function (mapping) {
      var source = mapping.source === null ? null : this._sources.at(mapping.source);
      source = util.computeSourceURL(sourceRoot, source, this._sourceMapURL);
      return {
        source: source,
        generatedLine: mapping.generatedLine,
        generatedColumn: mapping.generatedColumn,
        originalLine: mapping.originalLine,
        originalColumn: mapping.originalColumn,
        name: mapping.name === null ? null : this._names.at(mapping.name)
      };
    }, this).forEach(aCallback, context);
  };

/**
 * Returns all generated line and column information for the original source,
 * line, and column provided. If no column is provided, returns all mappings
 * corresponding to a either the line we are searching for or the next
 * closest line that has any mappings. Otherwise, returns all mappings
 * corresponding to the given line and either the column we are searching for
 * or the next closest column that has any offsets.
 *
 * The only argument is an object with the following properties:
 *
 *   - source: The filename of the original source.
 *   - line: The line number in the original source.  The line number is 1-based.
 *   - column: Optional. the column number in the original source.
 *    The column number is 0-based.
 *
 * and an array of objects is returned, each with the following properties:
 *
 *   - line: The line number in the generated source, or null.  The
 *    line number is 1-based.
 *   - column: The column number in the generated source, or null.
 *    The column number is 0-based.
 */
SourceMapConsumer$1.prototype.allGeneratedPositionsFor =
  function SourceMapConsumer_allGeneratedPositionsFor(aArgs) {
    var line = util.getArg(aArgs, 'line');

    // When there is no exact match, BasicSourceMapConsumer.prototype._findMapping
    // returns the index of the closest mapping less than the needle. By
    // setting needle.originalColumn to 0, we thus find the last mapping for
    // the given line, provided such a mapping exists.
    var needle = {
      source: util.getArg(aArgs, 'source'),
      originalLine: line,
      originalColumn: util.getArg(aArgs, 'column', 0)
    };

    needle.source = this._findSourceIndex(needle.source);
    if (needle.source < 0) {
      return [];
    }

    var mappings = [];

    var index = this._findMapping(needle,
                                  this._originalMappings,
                                  "originalLine",
                                  "originalColumn",
                                  util.compareByOriginalPositions,
                                  binarySearch.LEAST_UPPER_BOUND);
    if (index >= 0) {
      var mapping = this._originalMappings[index];

      if (aArgs.column === undefined) {
        var originalLine = mapping.originalLine;

        // Iterate until either we run out of mappings, or we run into
        // a mapping for a different line than the one we found. Since
        // mappings are sorted, this is guaranteed to find all mappings for
        // the line we found.
        while (mapping && mapping.originalLine === originalLine) {
          mappings.push({
            line: util.getArg(mapping, 'generatedLine', null),
            column: util.getArg(mapping, 'generatedColumn', null),
            lastColumn: util.getArg(mapping, 'lastGeneratedColumn', null)
          });

          mapping = this._originalMappings[++index];
        }
      } else {
        var originalColumn = mapping.originalColumn;

        // Iterate until either we run out of mappings, or we run into
        // a mapping for a different line than the one we were searching for.
        // Since mappings are sorted, this is guaranteed to find all mappings for
        // the line we are searching for.
        while (mapping &&
               mapping.originalLine === line &&
               mapping.originalColumn == originalColumn) {
          mappings.push({
            line: util.getArg(mapping, 'generatedLine', null),
            column: util.getArg(mapping, 'generatedColumn', null),
            lastColumn: util.getArg(mapping, 'lastGeneratedColumn', null)
          });

          mapping = this._originalMappings[++index];
        }
      }
    }

    return mappings;
  };

var SourceMapConsumer_1 = SourceMapConsumer$1;

/**
 * A BasicSourceMapConsumer instance represents a parsed source map which we can
 * query for information about the original file positions by giving it a file
 * position in the generated source.
 *
 * The first parameter is the raw source map (either as a JSON string, or
 * already parsed to an object). According to the spec, source maps have the
 * following attributes:
 *
 *   - version: Which version of the source map spec this map is following.
 *   - sources: An array of URLs to the original source files.
 *   - names: An array of identifiers which can be referrenced by individual mappings.
 *   - sourceRoot: Optional. The URL root from which all sources are relative.
 *   - sourcesContent: Optional. An array of contents of the original source files.
 *   - mappings: A string of base64 VLQs which contain the actual mappings.
 *   - file: Optional. The generated file this source map is associated with.
 *
 * Here is an example source map, taken from the source map spec[0]:
 *
 *     {
 *       version : 3,
 *       file: "out.js",
 *       sourceRoot : "",
 *       sources: ["foo.js", "bar.js"],
 *       names: ["src", "maps", "are", "fun"],
 *       mappings: "AA,AB;;ABCDE;"
 *     }
 *
 * The second parameter, if given, is a string whose value is the URL
 * at which the source map was found.  This URL is used to compute the
 * sources array.
 *
 * [0]: https://docs.google.com/document/d/1U1RGAehQwRypUTovF1KRlpiOFze0b-_2gc6fAH0KY0k/edit?pli=1#
 */
function BasicSourceMapConsumer(aSourceMap, aSourceMapURL) {
  var sourceMap = aSourceMap;
  if (typeof aSourceMap === 'string') {
    sourceMap = util.parseSourceMapInput(aSourceMap);
  }

  var version = util.getArg(sourceMap, 'version');
  var sources = util.getArg(sourceMap, 'sources');
  // Sass 3.3 leaves out the 'names' array, so we deviate from the spec (which
  // requires the array) to play nice here.
  var names = util.getArg(sourceMap, 'names', []);
  var sourceRoot = util.getArg(sourceMap, 'sourceRoot', null);
  var sourcesContent = util.getArg(sourceMap, 'sourcesContent', null);
  var mappings = util.getArg(sourceMap, 'mappings');
  var file = util.getArg(sourceMap, 'file', null);

  // Once again, Sass deviates from the spec and supplies the version as a
  // string rather than a number, so we use loose equality checking here.
  if (version != this._version) {
    throw new Error('Unsupported version: ' + version);
  }

  if (sourceRoot) {
    sourceRoot = util.normalize(sourceRoot);
  }

  sources = sources
    .map(String)
    // Some source maps produce relative source paths like "./foo.js" instead of
    // "foo.js".  Normalize these first so that future comparisons will succeed.
    // See bugzil.la/1090768.
    .map(util.normalize)
    // Always ensure that absolute sources are internally stored relative to
    // the source root, if the source root is absolute. Not doing this would
    // be particularly problematic when the source root is a prefix of the
    // source (valid, but why??). See github issue #199 and bugzil.la/1188982.
    .map(function (source) {
      return sourceRoot && util.isAbsolute(sourceRoot) && util.isAbsolute(source)
        ? util.relative(sourceRoot, source)
        : source;
    });

  // Pass `true` below to allow duplicate names and sources. While source maps
  // are intended to be compressed and deduplicated, the TypeScript compiler
  // sometimes generates source maps with duplicates in them. See Github issue
  // #72 and bugzil.la/889492.
  this._names = ArraySet.fromArray(names.map(String), true);
  this._sources = ArraySet.fromArray(sources, true);

  this._absoluteSources = this._sources.toArray().map(function (s) {
    return util.computeSourceURL(sourceRoot, s, aSourceMapURL);
  });

  this.sourceRoot = sourceRoot;
  this.sourcesContent = sourcesContent;
  this._mappings = mappings;
  this._sourceMapURL = aSourceMapURL;
  this.file = file;
}

BasicSourceMapConsumer.prototype = Object.create(SourceMapConsumer$1.prototype);
BasicSourceMapConsumer.prototype.consumer = SourceMapConsumer$1;

/**
 * Utility function to find the index of a source.  Returns -1 if not
 * found.
 */
BasicSourceMapConsumer.prototype._findSourceIndex = function(aSource) {
  var relativeSource = aSource;
  if (this.sourceRoot != null) {
    relativeSource = util.relative(this.sourceRoot, relativeSource);
  }

  if (this._sources.has(relativeSource)) {
    return this._sources.indexOf(relativeSource);
  }

  // Maybe aSource is an absolute URL as returned by |sources|.  In
  // this case we can't simply undo the transform.
  var i;
  for (i = 0; i < this._absoluteSources.length; ++i) {
    if (this._absoluteSources[i] == aSource) {
      return i;
    }
  }

  return -1;
};

/**
 * Create a BasicSourceMapConsumer from a SourceMapGenerator.
 *
 * @param SourceMapGenerator aSourceMap
 *        The source map that will be consumed.
 * @param String aSourceMapURL
 *        The URL at which the source map can be found (optional)
 * @returns BasicSourceMapConsumer
 */
BasicSourceMapConsumer.fromSourceMap =
  function SourceMapConsumer_fromSourceMap(aSourceMap, aSourceMapURL) {
    var smc = Object.create(BasicSourceMapConsumer.prototype);

    var names = smc._names = ArraySet.fromArray(aSourceMap._names.toArray(), true);
    var sources = smc._sources = ArraySet.fromArray(aSourceMap._sources.toArray(), true);
    smc.sourceRoot = aSourceMap._sourceRoot;
    smc.sourcesContent = aSourceMap._generateSourcesContent(smc._sources.toArray(),
                                                            smc.sourceRoot);
    smc.file = aSourceMap._file;
    smc._sourceMapURL = aSourceMapURL;
    smc._absoluteSources = smc._sources.toArray().map(function (s) {
      return util.computeSourceURL(smc.sourceRoot, s, aSourceMapURL);
    });

    // Because we are modifying the entries (by converting string sources and
    // names to indices into the sources and names ArraySets), we have to make
    // a copy of the entry or else bad things happen. Shared mutable state
    // strikes again! See github issue #191.

    var generatedMappings = aSourceMap._mappings.toArray().slice();
    var destGeneratedMappings = smc.__generatedMappings = [];
    var destOriginalMappings = smc.__originalMappings = [];

    for (var i = 0, length = generatedMappings.length; i < length; i++) {
      var srcMapping = generatedMappings[i];
      var destMapping = new Mapping;
      destMapping.generatedLine = srcMapping.generatedLine;
      destMapping.generatedColumn = srcMapping.generatedColumn;

      if (srcMapping.source) {
        destMapping.source = sources.indexOf(srcMapping.source);
        destMapping.originalLine = srcMapping.originalLine;
        destMapping.originalColumn = srcMapping.originalColumn;

        if (srcMapping.name) {
          destMapping.name = names.indexOf(srcMapping.name);
        }

        destOriginalMappings.push(destMapping);
      }

      destGeneratedMappings.push(destMapping);
    }

    quickSort(smc.__originalMappings, util.compareByOriginalPositions);

    return smc;
  };

/**
 * The version of the source mapping spec that we are consuming.
 */
BasicSourceMapConsumer.prototype._version = 3;

/**
 * The list of original sources.
 */
Object.defineProperty(BasicSourceMapConsumer.prototype, 'sources', {
  get: function () {
    return this._absoluteSources.slice();
  }
});

/**
 * Provide the JIT with a nice shape / hidden class.
 */
function Mapping() {
  this.generatedLine = 0;
  this.generatedColumn = 0;
  this.source = null;
  this.originalLine = null;
  this.originalColumn = null;
  this.name = null;
}

/**
 * Parse the mappings in a string in to a data structure which we can easily
 * query (the ordered arrays in the `this.__generatedMappings` and
 * `this.__originalMappings` properties).
 */
BasicSourceMapConsumer.prototype._parseMappings =
  function SourceMapConsumer_parseMappings(aStr, aSourceRoot) {
    var generatedLine = 1;
    var previousGeneratedColumn = 0;
    var previousOriginalLine = 0;
    var previousOriginalColumn = 0;
    var previousSource = 0;
    var previousName = 0;
    var length = aStr.length;
    var index = 0;
    var cachedSegments = {};
    var temp = {};
    var originalMappings = [];
    var generatedMappings = [];
    var mapping, str, segment, end, value;

    while (index < length) {
      if (aStr.charAt(index) === ';') {
        generatedLine++;
        index++;
        previousGeneratedColumn = 0;
      }
      else if (aStr.charAt(index) === ',') {
        index++;
      }
      else {
        mapping = new Mapping();
        mapping.generatedLine = generatedLine;

        // Because each offset is encoded relative to the previous one,
        // many segments often have the same encoding. We can exploit this
        // fact by caching the parsed variable length fields of each segment,
        // allowing us to avoid a second parse if we encounter the same
        // segment again.
        for (end = index; end < length; end++) {
          if (this._charIsMappingSeparator(aStr, end)) {
            break;
          }
        }
        str = aStr.slice(index, end);

        segment = cachedSegments[str];
        if (segment) {
          index += str.length;
        } else {
          segment = [];
          while (index < end) {
            base64Vlq.decode(aStr, index, temp);
            value = temp.value;
            index = temp.rest;
            segment.push(value);
          }

          if (segment.length === 2) {
            throw new Error('Found a source, but no line and column');
          }

          if (segment.length === 3) {
            throw new Error('Found a source and line, but no column');
          }

          cachedSegments[str] = segment;
        }

        // Generated column.
        mapping.generatedColumn = previousGeneratedColumn + segment[0];
        previousGeneratedColumn = mapping.generatedColumn;

        if (segment.length > 1) {
          // Original source.
          mapping.source = previousSource + segment[1];
          previousSource += segment[1];

          // Original line.
          mapping.originalLine = previousOriginalLine + segment[2];
          previousOriginalLine = mapping.originalLine;
          // Lines are stored 0-based
          mapping.originalLine += 1;

          // Original column.
          mapping.originalColumn = previousOriginalColumn + segment[3];
          previousOriginalColumn = mapping.originalColumn;

          if (segment.length > 4) {
            // Original name.
            mapping.name = previousName + segment[4];
            previousName += segment[4];
          }
        }

        generatedMappings.push(mapping);
        if (typeof mapping.originalLine === 'number') {
          originalMappings.push(mapping);
        }
      }
    }

    quickSort(generatedMappings, util.compareByGeneratedPositionsDeflated);
    this.__generatedMappings = generatedMappings;

    quickSort(originalMappings, util.compareByOriginalPositions);
    this.__originalMappings = originalMappings;
  };

/**
 * Find the mapping that best matches the hypothetical "needle" mapping that
 * we are searching for in the given "haystack" of mappings.
 */
BasicSourceMapConsumer.prototype._findMapping =
  function SourceMapConsumer_findMapping(aNeedle, aMappings, aLineName,
                                         aColumnName, aComparator, aBias) {
    // To return the position we are searching for, we must first find the
    // mapping for the given position and then return the opposite position it
    // points to. Because the mappings are sorted, we can use binary search to
    // find the best mapping.

    if (aNeedle[aLineName] <= 0) {
      throw new TypeError('Line must be greater than or equal to 1, got '
                          + aNeedle[aLineName]);
    }
    if (aNeedle[aColumnName] < 0) {
      throw new TypeError('Column must be greater than or equal to 0, got '
                          + aNeedle[aColumnName]);
    }

    return binarySearch.search(aNeedle, aMappings, aComparator, aBias);
  };

/**
 * Compute the last column for each generated mapping. The last column is
 * inclusive.
 */
BasicSourceMapConsumer.prototype.computeColumnSpans =
  function SourceMapConsumer_computeColumnSpans() {
    for (var index = 0; index < this._generatedMappings.length; ++index) {
      var mapping = this._generatedMappings[index];

      // Mappings do not contain a field for the last generated columnt. We
      // can come up with an optimistic estimate, however, by assuming that
      // mappings are contiguous (i.e. given two consecutive mappings, the
      // first mapping ends where the second one starts).
      if (index + 1 < this._generatedMappings.length) {
        var nextMapping = this._generatedMappings[index + 1];

        if (mapping.generatedLine === nextMapping.generatedLine) {
          mapping.lastGeneratedColumn = nextMapping.generatedColumn - 1;
          continue;
        }
      }

      // The last mapping for each line spans the entire line.
      mapping.lastGeneratedColumn = Infinity;
    }
  };

/**
 * Returns the original source, line, and column information for the generated
 * source's line and column positions provided. The only argument is an object
 * with the following properties:
 *
 *   - line: The line number in the generated source.  The line number
 *     is 1-based.
 *   - column: The column number in the generated source.  The column
 *     number is 0-based.
 *   - bias: Either 'SourceMapConsumer.GREATEST_LOWER_BOUND' or
 *     'SourceMapConsumer.LEAST_UPPER_BOUND'. Specifies whether to return the
 *     closest element that is smaller than or greater than the one we are
 *     searching for, respectively, if the exact element cannot be found.
 *     Defaults to 'SourceMapConsumer.GREATEST_LOWER_BOUND'.
 *
 * and an object is returned with the following properties:
 *
 *   - source: The original source file, or null.
 *   - line: The line number in the original source, or null.  The
 *     line number is 1-based.
 *   - column: The column number in the original source, or null.  The
 *     column number is 0-based.
 *   - name: The original identifier, or null.
 */
BasicSourceMapConsumer.prototype.originalPositionFor =
  function SourceMapConsumer_originalPositionFor(aArgs) {
    var needle = {
      generatedLine: util.getArg(aArgs, 'line'),
      generatedColumn: util.getArg(aArgs, 'column')
    };

    var index = this._findMapping(
      needle,
      this._generatedMappings,
      "generatedLine",
      "generatedColumn",
      util.compareByGeneratedPositionsDeflated,
      util.getArg(aArgs, 'bias', SourceMapConsumer$1.GREATEST_LOWER_BOUND)
    );

    if (index >= 0) {
      var mapping = this._generatedMappings[index];

      if (mapping.generatedLine === needle.generatedLine) {
        var source = util.getArg(mapping, 'source', null);
        if (source !== null) {
          source = this._sources.at(source);
          source = util.computeSourceURL(this.sourceRoot, source, this._sourceMapURL);
        }
        var name = util.getArg(mapping, 'name', null);
        if (name !== null) {
          name = this._names.at(name);
        }
        return {
          source: source,
          line: util.getArg(mapping, 'originalLine', null),
          column: util.getArg(mapping, 'originalColumn', null),
          name: name
        };
      }
    }

    return {
      source: null,
      line: null,
      column: null,
      name: null
    };
  };

/**
 * Return true if we have the source content for every source in the source
 * map, false otherwise.
 */
BasicSourceMapConsumer.prototype.hasContentsOfAllSources =
  function BasicSourceMapConsumer_hasContentsOfAllSources() {
    if (!this.sourcesContent) {
      return false;
    }
    return this.sourcesContent.length >= this._sources.size() &&
      !this.sourcesContent.some(function (sc) { return sc == null; });
  };

/**
 * Returns the original source content. The only argument is the url of the
 * original source file. Returns null if no original source content is
 * available.
 */
BasicSourceMapConsumer.prototype.sourceContentFor =
  function SourceMapConsumer_sourceContentFor(aSource, nullOnMissing) {
    if (!this.sourcesContent) {
      return null;
    }

    var index = this._findSourceIndex(aSource);
    if (index >= 0) {
      return this.sourcesContent[index];
    }

    var relativeSource = aSource;
    if (this.sourceRoot != null) {
      relativeSource = util.relative(this.sourceRoot, relativeSource);
    }

    var url;
    if (this.sourceRoot != null
        && (url = util.urlParse(this.sourceRoot))) {
      // XXX: file:// URIs and absolute paths lead to unexpected behavior for
      // many users. We can help them out when they expect file:// URIs to
      // behave like it would if they were running a local HTTP server. See
      // https://bugzilla.mozilla.org/show_bug.cgi?id=885597.
      var fileUriAbsPath = relativeSource.replace(/^file:\/\//, "");
      if (url.scheme == "file"
          && this._sources.has(fileUriAbsPath)) {
        return this.sourcesContent[this._sources.indexOf(fileUriAbsPath)]
      }

      if ((!url.path || url.path == "/")
          && this._sources.has("/" + relativeSource)) {
        return this.sourcesContent[this._sources.indexOf("/" + relativeSource)];
      }
    }

    // This function is used recursively from
    // IndexedSourceMapConsumer.prototype.sourceContentFor. In that case, we
    // don't want to throw if we can't find the source - we just want to
    // return null, so we provide a flag to exit gracefully.
    if (nullOnMissing) {
      return null;
    }
    else {
      throw new Error('"' + relativeSource + '" is not in the SourceMap.');
    }
  };

/**
 * Returns the generated line and column information for the original source,
 * line, and column positions provided. The only argument is an object with
 * the following properties:
 *
 *   - source: The filename of the original source.
 *   - line: The line number in the original source.  The line number
 *     is 1-based.
 *   - column: The column number in the original source.  The column
 *     number is 0-based.
 *   - bias: Either 'SourceMapConsumer.GREATEST_LOWER_BOUND' or
 *     'SourceMapConsumer.LEAST_UPPER_BOUND'. Specifies whether to return the
 *     closest element that is smaller than or greater than the one we are
 *     searching for, respectively, if the exact element cannot be found.
 *     Defaults to 'SourceMapConsumer.GREATEST_LOWER_BOUND'.
 *
 * and an object is returned with the following properties:
 *
 *   - line: The line number in the generated source, or null.  The
 *     line number is 1-based.
 *   - column: The column number in the generated source, or null.
 *     The column number is 0-based.
 */
BasicSourceMapConsumer.prototype.generatedPositionFor =
  function SourceMapConsumer_generatedPositionFor(aArgs) {
    var source = util.getArg(aArgs, 'source');
    source = this._findSourceIndex(source);
    if (source < 0) {
      return {
        line: null,
        column: null,
        lastColumn: null
      };
    }

    var needle = {
      source: source,
      originalLine: util.getArg(aArgs, 'line'),
      originalColumn: util.getArg(aArgs, 'column')
    };

    var index = this._findMapping(
      needle,
      this._originalMappings,
      "originalLine",
      "originalColumn",
      util.compareByOriginalPositions,
      util.getArg(aArgs, 'bias', SourceMapConsumer$1.GREATEST_LOWER_BOUND)
    );

    if (index >= 0) {
      var mapping = this._originalMappings[index];

      if (mapping.source === needle.source) {
        return {
          line: util.getArg(mapping, 'generatedLine', null),
          column: util.getArg(mapping, 'generatedColumn', null),
          lastColumn: util.getArg(mapping, 'lastGeneratedColumn', null)
        };
      }
    }

    return {
      line: null,
      column: null,
      lastColumn: null
    };
  };

var BasicSourceMapConsumer_1 = BasicSourceMapConsumer;

/**
 * An IndexedSourceMapConsumer instance represents a parsed source map which
 * we can query for information. It differs from BasicSourceMapConsumer in
 * that it takes "indexed" source maps (i.e. ones with a "sections" field) as
 * input.
 *
 * The first parameter is a raw source map (either as a JSON string, or already
 * parsed to an object). According to the spec for indexed source maps, they
 * have the following attributes:
 *
 *   - version: Which version of the source map spec this map is following.
 *   - file: Optional. The generated file this source map is associated with.
 *   - sections: A list of section definitions.
 *
 * Each value under the "sections" field has two fields:
 *   - offset: The offset into the original specified at which this section
 *       begins to apply, defined as an object with a "line" and "column"
 *       field.
 *   - map: A source map definition. This source map could also be indexed,
 *       but doesn't have to be.
 *
 * Instead of the "map" field, it's also possible to have a "url" field
 * specifying a URL to retrieve a source map from, but that's currently
 * unsupported.
 *
 * Here's an example source map, taken from the source map spec[0], but
 * modified to omit a section which uses the "url" field.
 *
 *  {
 *    version : 3,
 *    file: "app.js",
 *    sections: [{
 *      offset: {line:100, column:10},
 *      map: {
 *        version : 3,
 *        file: "section.js",
 *        sources: ["foo.js", "bar.js"],
 *        names: ["src", "maps", "are", "fun"],
 *        mappings: "AAAA,E;;ABCDE;"
 *      }
 *    }],
 *  }
 *
 * The second parameter, if given, is a string whose value is the URL
 * at which the source map was found.  This URL is used to compute the
 * sources array.
 *
 * [0]: https://docs.google.com/document/d/1U1RGAehQwRypUTovF1KRlpiOFze0b-_2gc6fAH0KY0k/edit#heading=h.535es3xeprgt
 */
function IndexedSourceMapConsumer(aSourceMap, aSourceMapURL) {
  var sourceMap = aSourceMap;
  if (typeof aSourceMap === 'string') {
    sourceMap = util.parseSourceMapInput(aSourceMap);
  }

  var version = util.getArg(sourceMap, 'version');
  var sections = util.getArg(sourceMap, 'sections');

  if (version != this._version) {
    throw new Error('Unsupported version: ' + version);
  }

  this._sources = new ArraySet();
  this._names = new ArraySet();

  var lastOffset = {
    line: -1,
    column: 0
  };
  this._sections = sections.map(function (s) {
    if (s.url) {
      // The url field will require support for asynchronicity.
      // See https://github.com/mozilla/source-map/issues/16
      throw new Error('Support for url field in sections not implemented.');
    }
    var offset = util.getArg(s, 'offset');
    var offsetLine = util.getArg(offset, 'line');
    var offsetColumn = util.getArg(offset, 'column');

    if (offsetLine < lastOffset.line ||
        (offsetLine === lastOffset.line && offsetColumn < lastOffset.column)) {
      throw new Error('Section offsets must be ordered and non-overlapping.');
    }
    lastOffset = offset;

    return {
      generatedOffset: {
        // The offset fields are 0-based, but we use 1-based indices when
        // encoding/decoding from VLQ.
        generatedLine: offsetLine + 1,
        generatedColumn: offsetColumn + 1
      },
      consumer: new SourceMapConsumer$1(util.getArg(s, 'map'), aSourceMapURL)
    }
  });
}

IndexedSourceMapConsumer.prototype = Object.create(SourceMapConsumer$1.prototype);
IndexedSourceMapConsumer.prototype.constructor = SourceMapConsumer$1;

/**
 * The version of the source mapping spec that we are consuming.
 */
IndexedSourceMapConsumer.prototype._version = 3;

/**
 * The list of original sources.
 */
Object.defineProperty(IndexedSourceMapConsumer.prototype, 'sources', {
  get: function () {
    var sources = [];
    for (var i = 0; i < this._sections.length; i++) {
      for (var j = 0; j < this._sections[i].consumer.sources.length; j++) {
        sources.push(this._sections[i].consumer.sources[j]);
      }
    }
    return sources;
  }
});

/**
 * Returns the original source, line, and column information for the generated
 * source's line and column positions provided. The only argument is an object
 * with the following properties:
 *
 *   - line: The line number in the generated source.  The line number
 *     is 1-based.
 *   - column: The column number in the generated source.  The column
 *     number is 0-based.
 *
 * and an object is returned with the following properties:
 *
 *   - source: The original source file, or null.
 *   - line: The line number in the original source, or null.  The
 *     line number is 1-based.
 *   - column: The column number in the original source, or null.  The
 *     column number is 0-based.
 *   - name: The original identifier, or null.
 */
IndexedSourceMapConsumer.prototype.originalPositionFor =
  function IndexedSourceMapConsumer_originalPositionFor(aArgs) {
    var needle = {
      generatedLine: util.getArg(aArgs, 'line'),
      generatedColumn: util.getArg(aArgs, 'column')
    };

    // Find the section containing the generated position we're trying to map
    // to an original position.
    var sectionIndex = binarySearch.search(needle, this._sections,
      function(needle, section) {
        var cmp = needle.generatedLine - section.generatedOffset.generatedLine;
        if (cmp) {
          return cmp;
        }

        return (needle.generatedColumn -
                section.generatedOffset.generatedColumn);
      });
    var section = this._sections[sectionIndex];

    if (!section) {
      return {
        source: null,
        line: null,
        column: null,
        name: null
      };
    }

    return section.consumer.originalPositionFor({
      line: needle.generatedLine -
        (section.generatedOffset.generatedLine - 1),
      column: needle.generatedColumn -
        (section.generatedOffset.generatedLine === needle.generatedLine
         ? section.generatedOffset.generatedColumn - 1
         : 0),
      bias: aArgs.bias
    });
  };

/**
 * Return true if we have the source content for every source in the source
 * map, false otherwise.
 */
IndexedSourceMapConsumer.prototype.hasContentsOfAllSources =
  function IndexedSourceMapConsumer_hasContentsOfAllSources() {
    return this._sections.every(function (s) {
      return s.consumer.hasContentsOfAllSources();
    });
  };

/**
 * Returns the original source content. The only argument is the url of the
 * original source file. Returns null if no original source content is
 * available.
 */
IndexedSourceMapConsumer.prototype.sourceContentFor =
  function IndexedSourceMapConsumer_sourceContentFor(aSource, nullOnMissing) {
    for (var i = 0; i < this._sections.length; i++) {
      var section = this._sections[i];

      var content = section.consumer.sourceContentFor(aSource, true);
      if (content) {
        return content;
      }
    }
    if (nullOnMissing) {
      return null;
    }
    else {
      throw new Error('"' + aSource + '" is not in the SourceMap.');
    }
  };

/**
 * Returns the generated line and column information for the original source,
 * line, and column positions provided. The only argument is an object with
 * the following properties:
 *
 *   - source: The filename of the original source.
 *   - line: The line number in the original source.  The line number
 *     is 1-based.
 *   - column: The column number in the original source.  The column
 *     number is 0-based.
 *
 * and an object is returned with the following properties:
 *
 *   - line: The line number in the generated source, or null.  The
 *     line number is 1-based. 
 *   - column: The column number in the generated source, or null.
 *     The column number is 0-based.
 */
IndexedSourceMapConsumer.prototype.generatedPositionFor =
  function IndexedSourceMapConsumer_generatedPositionFor(aArgs) {
    for (var i = 0; i < this._sections.length; i++) {
      var section = this._sections[i];

      // Only consider this section if the requested source is in the list of
      // sources of the consumer.
      if (section.consumer._findSourceIndex(util.getArg(aArgs, 'source')) === -1) {
        continue;
      }
      var generatedPosition = section.consumer.generatedPositionFor(aArgs);
      if (generatedPosition) {
        var ret = {
          line: generatedPosition.line +
            (section.generatedOffset.generatedLine - 1),
          column: generatedPosition.column +
            (section.generatedOffset.generatedLine === generatedPosition.line
             ? section.generatedOffset.generatedColumn - 1
             : 0)
        };
        return ret;
      }
    }

    return {
      line: null,
      column: null
    };
  };

/**
 * Parse the mappings in a string in to a data structure which we can easily
 * query (the ordered arrays in the `this.__generatedMappings` and
 * `this.__originalMappings` properties).
 */
IndexedSourceMapConsumer.prototype._parseMappings =
  function IndexedSourceMapConsumer_parseMappings(aStr, aSourceRoot) {
    this.__generatedMappings = [];
    this.__originalMappings = [];
    for (var i = 0; i < this._sections.length; i++) {
      var section = this._sections[i];
      var sectionMappings = section.consumer._generatedMappings;
      for (var j = 0; j < sectionMappings.length; j++) {
        var mapping = sectionMappings[j];

        var source = section.consumer._sources.at(mapping.source);
        source = util.computeSourceURL(section.consumer.sourceRoot, source, this._sourceMapURL);
        this._sources.add(source);
        source = this._sources.indexOf(source);

        var name = null;
        if (mapping.name) {
          name = section.consumer._names.at(mapping.name);
          this._names.add(name);
          name = this._names.indexOf(name);
        }

        // The mappings coming from the consumer for the section have
        // generated positions relative to the start of the section, so we
        // need to offset them to be relative to the start of the concatenated
        // generated file.
        var adjustedMapping = {
          source: source,
          generatedLine: mapping.generatedLine +
            (section.generatedOffset.generatedLine - 1),
          generatedColumn: mapping.generatedColumn +
            (section.generatedOffset.generatedLine === mapping.generatedLine
            ? section.generatedOffset.generatedColumn - 1
            : 0),
          originalLine: mapping.originalLine,
          originalColumn: mapping.originalColumn,
          name: name
        };

        this.__generatedMappings.push(adjustedMapping);
        if (typeof adjustedMapping.originalLine === 'number') {
          this.__originalMappings.push(adjustedMapping);
        }
      }
    }

    quickSort(this.__generatedMappings, util.compareByGeneratedPositionsDeflated);
    quickSort(this.__originalMappings, util.compareByOriginalPositions);
  };

var IndexedSourceMapConsumer_1 = IndexedSourceMapConsumer;

var sourceMapConsumer = {
	SourceMapConsumer: SourceMapConsumer_1,
	BasicSourceMapConsumer: BasicSourceMapConsumer_1,
	IndexedSourceMapConsumer: IndexedSourceMapConsumer_1
};

/* -*- Mode: js; js-indent-level: 2; -*- */

/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */

var SourceMapGenerator$1 = sourceMapGenerator.SourceMapGenerator;


// Matches a Windows-style `\r\n` newline or a `\n` newline used by all other
// operating systems these days (capturing the result).
var REGEX_NEWLINE = /(\r?\n)/;

// Newline character code for charCodeAt() comparisons
var NEWLINE_CODE = 10;

// Private symbol for identifying `SourceNode`s when multiple versions of
// the source-map library are loaded. This MUST NOT CHANGE across
// versions!
var isSourceNode = "$$$isSourceNode$$$";

/**
 * SourceNodes provide a way to abstract over interpolating/concatenating
 * snippets of generated JavaScript source code while maintaining the line and
 * column information associated with the original source code.
 *
 * @param aLine The original line number.
 * @param aColumn The original column number.
 * @param aSource The original source's filename.
 * @param aChunks Optional. An array of strings which are snippets of
 *        generated JS, or other SourceNodes.
 * @param aName The original identifier.
 */
function SourceNode$1(aLine, aColumn, aSource, aChunks, aName) {
  this.children = [];
  this.sourceContents = {};
  this.line = aLine == null ? null : aLine;
  this.column = aColumn == null ? null : aColumn;
  this.source = aSource == null ? null : aSource;
  this.name = aName == null ? null : aName;
  this[isSourceNode] = true;
  if (aChunks != null) this.add(aChunks);
}

/**
 * Creates a SourceNode from generated code and a SourceMapConsumer.
 *
 * @param aGeneratedCode The generated code
 * @param aSourceMapConsumer The SourceMap for the generated code
 * @param aRelativePath Optional. The path that relative sources in the
 *        SourceMapConsumer should be relative to.
 */
SourceNode$1.fromStringWithSourceMap =
  function SourceNode_fromStringWithSourceMap(aGeneratedCode, aSourceMapConsumer, aRelativePath) {
    // The SourceNode we want to fill with the generated code
    // and the SourceMap
    var node = new SourceNode$1();

    // All even indices of this array are one line of the generated code,
    // while all odd indices are the newlines between two adjacent lines
    // (since `REGEX_NEWLINE` captures its match).
    // Processed fragments are accessed by calling `shiftNextLine`.
    var remainingLines = aGeneratedCode.split(REGEX_NEWLINE);
    var remainingLinesIndex = 0;
    var shiftNextLine = function() {
      var lineContents = getNextLine();
      // The last line of a file might not have a newline.
      var newLine = getNextLine() || "";
      return lineContents + newLine;

      function getNextLine() {
        return remainingLinesIndex < remainingLines.length ?
            remainingLines[remainingLinesIndex++] : undefined;
      }
    };

    // We need to remember the position of "remainingLines"
    var lastGeneratedLine = 1, lastGeneratedColumn = 0;

    // The generate SourceNodes we need a code range.
    // To extract it current and last mapping is used.
    // Here we store the last mapping.
    var lastMapping = null;

    aSourceMapConsumer.eachMapping(function (mapping) {
      if (lastMapping !== null) {
        // We add the code from "lastMapping" to "mapping":
        // First check if there is a new line in between.
        if (lastGeneratedLine < mapping.generatedLine) {
          // Associate first line with "lastMapping"
          addMappingWithCode(lastMapping, shiftNextLine());
          lastGeneratedLine++;
          lastGeneratedColumn = 0;
          // The remaining code is added without mapping
        } else {
          // There is no new line in between.
          // Associate the code between "lastGeneratedColumn" and
          // "mapping.generatedColumn" with "lastMapping"
          var nextLine = remainingLines[remainingLinesIndex] || '';
          var code = nextLine.substr(0, mapping.generatedColumn -
                                        lastGeneratedColumn);
          remainingLines[remainingLinesIndex] = nextLine.substr(mapping.generatedColumn -
                                              lastGeneratedColumn);
          lastGeneratedColumn = mapping.generatedColumn;
          addMappingWithCode(lastMapping, code);
          // No more remaining code, continue
          lastMapping = mapping;
          return;
        }
      }
      // We add the generated code until the first mapping
      // to the SourceNode without any mapping.
      // Each line is added as separate string.
      while (lastGeneratedLine < mapping.generatedLine) {
        node.add(shiftNextLine());
        lastGeneratedLine++;
      }
      if (lastGeneratedColumn < mapping.generatedColumn) {
        var nextLine = remainingLines[remainingLinesIndex] || '';
        node.add(nextLine.substr(0, mapping.generatedColumn));
        remainingLines[remainingLinesIndex] = nextLine.substr(mapping.generatedColumn);
        lastGeneratedColumn = mapping.generatedColumn;
      }
      lastMapping = mapping;
    }, this);
    // We have processed all mappings.
    if (remainingLinesIndex < remainingLines.length) {
      if (lastMapping) {
        // Associate the remaining code in the current line with "lastMapping"
        addMappingWithCode(lastMapping, shiftNextLine());
      }
      // and add the remaining lines without any mapping
      node.add(remainingLines.splice(remainingLinesIndex).join(""));
    }

    // Copy sourcesContent into SourceNode
    aSourceMapConsumer.sources.forEach(function (sourceFile) {
      var content = aSourceMapConsumer.sourceContentFor(sourceFile);
      if (content != null) {
        if (aRelativePath != null) {
          sourceFile = util.join(aRelativePath, sourceFile);
        }
        node.setSourceContent(sourceFile, content);
      }
    });

    return node;

    function addMappingWithCode(mapping, code) {
      if (mapping === null || mapping.source === undefined) {
        node.add(code);
      } else {
        var source = aRelativePath
          ? util.join(aRelativePath, mapping.source)
          : mapping.source;
        node.add(new SourceNode$1(mapping.originalLine,
                                mapping.originalColumn,
                                source,
                                code,
                                mapping.name));
      }
    }
  };

/**
 * Add a chunk of generated JS to this source node.
 *
 * @param aChunk A string snippet of generated JS code, another instance of
 *        SourceNode, or an array where each member is one of those things.
 */
SourceNode$1.prototype.add = function SourceNode_add(aChunk) {
  if (Array.isArray(aChunk)) {
    aChunk.forEach(function (chunk) {
      this.add(chunk);
    }, this);
  }
  else if (aChunk[isSourceNode] || typeof aChunk === "string") {
    if (aChunk) {
      this.children.push(aChunk);
    }
  }
  else {
    throw new TypeError(
      "Expected a SourceNode, string, or an array of SourceNodes and strings. Got " + aChunk
    );
  }
  return this;
};

/**
 * Add a chunk of generated JS to the beginning of this source node.
 *
 * @param aChunk A string snippet of generated JS code, another instance of
 *        SourceNode, or an array where each member is one of those things.
 */
SourceNode$1.prototype.prepend = function SourceNode_prepend(aChunk) {
  if (Array.isArray(aChunk)) {
    for (var i = aChunk.length-1; i >= 0; i--) {
      this.prepend(aChunk[i]);
    }
  }
  else if (aChunk[isSourceNode] || typeof aChunk === "string") {
    this.children.unshift(aChunk);
  }
  else {
    throw new TypeError(
      "Expected a SourceNode, string, or an array of SourceNodes and strings. Got " + aChunk
    );
  }
  return this;
};

/**
 * Walk over the tree of JS snippets in this node and its children. The
 * walking function is called once for each snippet of JS and is passed that
 * snippet and the its original associated source's line/column location.
 *
 * @param aFn The traversal function.
 */
SourceNode$1.prototype.walk = function SourceNode_walk(aFn) {
  var chunk;
  for (var i = 0, len = this.children.length; i < len; i++) {
    chunk = this.children[i];
    if (chunk[isSourceNode]) {
      chunk.walk(aFn);
    }
    else {
      if (chunk !== '') {
        aFn(chunk, { source: this.source,
                     line: this.line,
                     column: this.column,
                     name: this.name });
      }
    }
  }
};

/**
 * Like `String.prototype.join` except for SourceNodes. Inserts `aStr` between
 * each of `this.children`.
 *
 * @param aSep The separator.
 */
SourceNode$1.prototype.join = function SourceNode_join(aSep) {
  var newChildren;
  var i;
  var len = this.children.length;
  if (len > 0) {
    newChildren = [];
    for (i = 0; i < len-1; i++) {
      newChildren.push(this.children[i]);
      newChildren.push(aSep);
    }
    newChildren.push(this.children[i]);
    this.children = newChildren;
  }
  return this;
};

/**
 * Call String.prototype.replace on the very right-most source snippet. Useful
 * for trimming whitespace from the end of a source node, etc.
 *
 * @param aPattern The pattern to replace.
 * @param aReplacement The thing to replace the pattern with.
 */
SourceNode$1.prototype.replaceRight = function SourceNode_replaceRight(aPattern, aReplacement) {
  var lastChild = this.children[this.children.length - 1];
  if (lastChild[isSourceNode]) {
    lastChild.replaceRight(aPattern, aReplacement);
  }
  else if (typeof lastChild === 'string') {
    this.children[this.children.length - 1] = lastChild.replace(aPattern, aReplacement);
  }
  else {
    this.children.push(''.replace(aPattern, aReplacement));
  }
  return this;
};

/**
 * Set the source content for a source file. This will be added to the SourceMapGenerator
 * in the sourcesContent field.
 *
 * @param aSourceFile The filename of the source file
 * @param aSourceContent The content of the source file
 */
SourceNode$1.prototype.setSourceContent =
  function SourceNode_setSourceContent(aSourceFile, aSourceContent) {
    this.sourceContents[util.toSetString(aSourceFile)] = aSourceContent;
  };

/**
 * Walk over the tree of SourceNodes. The walking function is called for each
 * source file content and is passed the filename and source content.
 *
 * @param aFn The traversal function.
 */
SourceNode$1.prototype.walkSourceContents =
  function SourceNode_walkSourceContents(aFn) {
    for (var i = 0, len = this.children.length; i < len; i++) {
      if (this.children[i][isSourceNode]) {
        this.children[i].walkSourceContents(aFn);
      }
    }

    var sources = Object.keys(this.sourceContents);
    for (var i = 0, len = sources.length; i < len; i++) {
      aFn(util.fromSetString(sources[i]), this.sourceContents[sources[i]]);
    }
  };

/**
 * Return the string representation of this source node. Walks over the tree
 * and concatenates all the various snippets together to one string.
 */
SourceNode$1.prototype.toString = function SourceNode_toString() {
  var str = "";
  this.walk(function (chunk) {
    str += chunk;
  });
  return str;
};

/**
 * Returns the string representation of this source node along with a source
 * map.
 */
SourceNode$1.prototype.toStringWithSourceMap = function SourceNode_toStringWithSourceMap(aArgs) {
  var generated = {
    code: "",
    line: 1,
    column: 0
  };
  var map = new SourceMapGenerator$1(aArgs);
  var sourceMappingActive = false;
  var lastOriginalSource = null;
  var lastOriginalLine = null;
  var lastOriginalColumn = null;
  var lastOriginalName = null;
  this.walk(function (chunk, original) {
    generated.code += chunk;
    if (original.source !== null
        && original.line !== null
        && original.column !== null) {
      if(lastOriginalSource !== original.source
         || lastOriginalLine !== original.line
         || lastOriginalColumn !== original.column
         || lastOriginalName !== original.name) {
        map.addMapping({
          source: original.source,
          original: {
            line: original.line,
            column: original.column
          },
          generated: {
            line: generated.line,
            column: generated.column
          },
          name: original.name
        });
      }
      lastOriginalSource = original.source;
      lastOriginalLine = original.line;
      lastOriginalColumn = original.column;
      lastOriginalName = original.name;
      sourceMappingActive = true;
    } else if (sourceMappingActive) {
      map.addMapping({
        generated: {
          line: generated.line,
          column: generated.column
        }
      });
      lastOriginalSource = null;
      sourceMappingActive = false;
    }
    for (var idx = 0, length = chunk.length; idx < length; idx++) {
      if (chunk.charCodeAt(idx) === NEWLINE_CODE) {
        generated.line++;
        generated.column = 0;
        // Mappings end at eol
        if (idx + 1 === length) {
          lastOriginalSource = null;
          sourceMappingActive = false;
        } else if (sourceMappingActive) {
          map.addMapping({
            source: original.source,
            original: {
              line: original.line,
              column: original.column
            },
            generated: {
              line: generated.line,
              column: generated.column
            },
            name: original.name
          });
        }
      } else {
        generated.column++;
      }
    }
  });
  this.walkSourceContents(function (sourceFile, sourceContent) {
    map.setSourceContent(sourceFile, sourceContent);
  });

  return { code: generated.code, map: map };
};

var SourceNode_1 = SourceNode$1;

var sourceNode = {
	SourceNode: SourceNode_1
};

/*
 * Copyright 2009-2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE.txt or:
 * http://opensource.org/licenses/BSD-3-Clause
 */

var SourceMapGenerator = sourceMapGenerator.SourceMapGenerator;
var SourceMapConsumer = sourceMapConsumer.SourceMapConsumer;
var SourceNode = sourceNode.SourceNode;

var sourceMap = {
	SourceMapGenerator: SourceMapGenerator,
	SourceMapConsumer: SourceMapConsumer,
	SourceNode: SourceNode
};

const name="escodegen";const description="ECMAScript code generator";const homepage="http://github.com/estools/escodegen";const main="escodegen.js";const bin={esgenerate:"./bin/esgenerate.js",escodegen:"./bin/escodegen.js"};const files=["LICENSE.BSD","README.md","bin","escodegen.js","package.json"];const version="1.14.1";const engines={node:">=4.0"};const maintainers=[{name:"Yusuke Suzuki",email:"utatane.tea@gmail.com",web:"http://github.com/Constellation"}];const repository={type:"git",url:"http://github.com/estools/escodegen.git"};const dependencies={estraverse:"^4.2.0",esutils:"^2.0.2",esprima:"^4.0.1",optionator:"^0.8.1"};const optionalDependencies={"source-map":"~0.6.1"};const devDependencies={acorn:"^7.1.0",bluebird:"^3.4.7","bower-registry-client":"^1.0.0",chai:"^3.5.0","commonjs-everywhere":"^0.9.7",gulp:"^3.8.10","gulp-eslint":"^3.0.1","gulp-mocha":"^3.0.1",semver:"^5.1.0"};const license="BSD-2-Clause";const scripts={test:"gulp travis","unit-test":"gulp test",lint:"gulp lint",release:"node tools/release.js","build-min":"./node_modules/.bin/cjsify -ma path: tools/entry-point.js > escodegen.browser.min.js",build:"./node_modules/.bin/cjsify -a path: tools/entry-point.js > escodegen.browser.js"};var require$$3 = {name:name,description:description,homepage:homepage,main:main,bin:bin,files:files,version:version,engines:engines,maintainers:maintainers,repository:repository,dependencies:dependencies,optionalDependencies:optionalDependencies,devDependencies:devDependencies,license:license,scripts:scripts};

/*
  Copyright (C) 2012-2014 Yusuke Suzuki <utatane.tea@gmail.com>
  Copyright (C) 2015 Ingvar Stepanyan <me@rreverser.com>
  Copyright (C) 2014 Ivan Nikulin <ifaaan@gmail.com>
  Copyright (C) 2012-2013 Michael Ficarra <escodegen.copyright@michael.ficarra.me>
  Copyright (C) 2012-2013 Mathias Bynens <mathias@qiwi.be>
  Copyright (C) 2013 Irakli Gozalishvili <rfobic@gmail.com>
  Copyright (C) 2012 Robert Gust-Bardon <donate@robert.gust-bardon.org>
  Copyright (C) 2012 John Freeman <jfreeman08@gmail.com>
  Copyright (C) 2011-2012 Ariya Hidayat <ariya.hidayat@gmail.com>
  Copyright (C) 2012 Joost-Wim Boekesteijn <joost-wim@boekesteijn.nl>
  Copyright (C) 2012 Kris Kowal <kris.kowal@cixar.com>
  Copyright (C) 2012 Arpad Borsos <arpad.borsos@googlemail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

var escodegen = createCommonjsModule(function (module, exports) {
/*global exports:true, require:true, global:true*/
(function () {
    'use strict';

    var Syntax,
        Precedence,
        BinaryPrecedence,
        SourceNode,
        estraverse$1,
        esutils,
        base,
        indent,
        json,
        renumber,
        hexadecimal,
        quotes,
        escapeless,
        newline,
        space,
        parentheses,
        semicolons,
        safeConcatenation,
        directive,
        extra,
        parse,
        sourceMap$1,
        sourceCode,
        preserveBlankLines,
        FORMAT_MINIFY,
        FORMAT_DEFAULTS;

    estraverse$1 = estraverse;
    esutils = utils;

    Syntax = estraverse$1.Syntax;

    // Generation is done by generateExpression.
    function isExpression(node) {
        return CodeGenerator.Expression.hasOwnProperty(node.type);
    }

    // Generation is done by generateStatement.
    function isStatement(node) {
        return CodeGenerator.Statement.hasOwnProperty(node.type);
    }

    Precedence = {
        Sequence: 0,
        Yield: 1,
        Assignment: 1,
        Conditional: 2,
        ArrowFunction: 2,
        LogicalOR: 3,
        LogicalAND: 4,
        BitwiseOR: 5,
        BitwiseXOR: 6,
        BitwiseAND: 7,
        Equality: 8,
        Relational: 9,
        BitwiseSHIFT: 10,
        Additive: 11,
        Multiplicative: 12,
        Exponentiation: 13,
        Await: 14,
        Unary: 14,
        Postfix: 15,
        Call: 16,
        New: 17,
        TaggedTemplate: 18,
        Member: 19,
        Primary: 20
    };

    BinaryPrecedence = {
        '||': Precedence.LogicalOR,
        '&&': Precedence.LogicalAND,
        '|': Precedence.BitwiseOR,
        '^': Precedence.BitwiseXOR,
        '&': Precedence.BitwiseAND,
        '==': Precedence.Equality,
        '!=': Precedence.Equality,
        '===': Precedence.Equality,
        '!==': Precedence.Equality,
        'is': Precedence.Equality,
        'isnt': Precedence.Equality,
        '<': Precedence.Relational,
        '>': Precedence.Relational,
        '<=': Precedence.Relational,
        '>=': Precedence.Relational,
        'in': Precedence.Relational,
        'instanceof': Precedence.Relational,
        '<<': Precedence.BitwiseSHIFT,
        '>>': Precedence.BitwiseSHIFT,
        '>>>': Precedence.BitwiseSHIFT,
        '+': Precedence.Additive,
        '-': Precedence.Additive,
        '*': Precedence.Multiplicative,
        '%': Precedence.Multiplicative,
        '/': Precedence.Multiplicative,
        '**': Precedence.Exponentiation
    };

    //Flags
    var F_ALLOW_IN = 1,
        F_ALLOW_CALL = 1 << 1,
        F_ALLOW_UNPARATH_NEW = 1 << 2,
        F_FUNC_BODY = 1 << 3,
        F_DIRECTIVE_CTX = 1 << 4,
        F_SEMICOLON_OPT = 1 << 5;

    //Expression flag sets
    //NOTE: Flag order:
    // F_ALLOW_IN
    // F_ALLOW_CALL
    // F_ALLOW_UNPARATH_NEW
    var E_FTT = F_ALLOW_CALL | F_ALLOW_UNPARATH_NEW,
        E_TTF = F_ALLOW_IN | F_ALLOW_CALL,
        E_TTT = F_ALLOW_IN | F_ALLOW_CALL | F_ALLOW_UNPARATH_NEW,
        E_TFF = F_ALLOW_IN,
        E_FFT = F_ALLOW_UNPARATH_NEW,
        E_TFT = F_ALLOW_IN | F_ALLOW_UNPARATH_NEW;

    //Statement flag sets
    //NOTE: Flag order:
    // F_ALLOW_IN
    // F_FUNC_BODY
    // F_DIRECTIVE_CTX
    // F_SEMICOLON_OPT
    var S_TFFF = F_ALLOW_IN,
        S_TFFT = F_ALLOW_IN | F_SEMICOLON_OPT,
        S_FFFF = 0x00,
        S_TFTF = F_ALLOW_IN | F_DIRECTIVE_CTX,
        S_TTFF = F_ALLOW_IN | F_FUNC_BODY;

    function getDefaultOptions() {
        // default options
        return {
            indent: null,
            base: null,
            parse: null,
            comment: false,
            format: {
                indent: {
                    style: '    ',
                    base: 0,
                    adjustMultilineComment: false
                },
                newline: '\n',
                space: ' ',
                json: false,
                renumber: false,
                hexadecimal: false,
                quotes: 'single',
                escapeless: false,
                compact: false,
                parentheses: true,
                semicolons: true,
                safeConcatenation: false,
                preserveBlankLines: false
            },
            moz: {
                comprehensionExpressionStartsWithAssignment: false,
                starlessGenerator: false
            },
            sourceMap: null,
            sourceMapRoot: null,
            sourceMapWithCode: false,
            directive: false,
            raw: true,
            verbatim: null,
            sourceCode: null
        };
    }

    function stringRepeat(str, num) {
        var result = '';

        for (num |= 0; num > 0; num >>>= 1, str += str) {
            if (num & 1) {
                result += str;
            }
        }

        return result;
    }

    function hasLineTerminator(str) {
        return (/[\r\n]/g).test(str);
    }

    function endsWithLineTerminator(str) {
        var len = str.length;
        return len && esutils.code.isLineTerminator(str.charCodeAt(len - 1));
    }

    function merge(target, override) {
        var key;
        for (key in override) {
            if (override.hasOwnProperty(key)) {
                target[key] = override[key];
            }
        }
        return target;
    }

    function updateDeeply(target, override) {
        var key, val;

        function isHashObject(target) {
            return typeof target === 'object' && target instanceof Object && !(target instanceof RegExp);
        }

        for (key in override) {
            if (override.hasOwnProperty(key)) {
                val = override[key];
                if (isHashObject(val)) {
                    if (isHashObject(target[key])) {
                        updateDeeply(target[key], val);
                    } else {
                        target[key] = updateDeeply({}, val);
                    }
                } else {
                    target[key] = val;
                }
            }
        }
        return target;
    }

    function generateNumber(value) {
        var result, point, temp, exponent, pos;

        if (value !== value) {
            throw new Error('Numeric literal whose value is NaN');
        }
        if (value < 0 || (value === 0 && 1 / value < 0)) {
            throw new Error('Numeric literal whose value is negative');
        }

        if (value === 1 / 0) {
            return json ? 'null' : renumber ? '1e400' : '1e+400';
        }

        result = '' + value;
        if (!renumber || result.length < 3) {
            return result;
        }

        point = result.indexOf('.');
        if (!json && result.charCodeAt(0) === 0x30  /* 0 */ && point === 1) {
            point = 0;
            result = result.slice(1);
        }
        temp = result;
        result = result.replace('e+', 'e');
        exponent = 0;
        if ((pos = temp.indexOf('e')) > 0) {
            exponent = +temp.slice(pos + 1);
            temp = temp.slice(0, pos);
        }
        if (point >= 0) {
            exponent -= temp.length - point - 1;
            temp = +(temp.slice(0, point) + temp.slice(point + 1)) + '';
        }
        pos = 0;
        while (temp.charCodeAt(temp.length + pos - 1) === 0x30  /* 0 */) {
            --pos;
        }
        if (pos !== 0) {
            exponent -= pos;
            temp = temp.slice(0, pos);
        }
        if (exponent !== 0) {
            temp += 'e' + exponent;
        }
        if ((temp.length < result.length ||
                    (hexadecimal && value > 1e12 && Math.floor(value) === value && (temp = '0x' + value.toString(16)).length < result.length)) &&
                +temp === value) {
            result = temp;
        }

        return result;
    }

    // Generate valid RegExp expression.
    // This function is based on https://github.com/Constellation/iv Engine

    function escapeRegExpCharacter(ch, previousIsBackslash) {
        // not handling '\' and handling \u2028 or \u2029 to unicode escape sequence
        if ((ch & ~1) === 0x2028) {
            return (previousIsBackslash ? 'u' : '\\u') + ((ch === 0x2028) ? '2028' : '2029');
        } else if (ch === 10 || ch === 13) {  // \n, \r
            return (previousIsBackslash ? '' : '\\') + ((ch === 10) ? 'n' : 'r');
        }
        return String.fromCharCode(ch);
    }

    function generateRegExp(reg) {
        var match, result, flags, i, iz, ch, characterInBrack, previousIsBackslash;

        result = reg.toString();

        if (reg.source) {
            // extract flag from toString result
            match = result.match(/\/([^/]*)$/);
            if (!match) {
                return result;
            }

            flags = match[1];
            result = '';

            characterInBrack = false;
            previousIsBackslash = false;
            for (i = 0, iz = reg.source.length; i < iz; ++i) {
                ch = reg.source.charCodeAt(i);

                if (!previousIsBackslash) {
                    if (characterInBrack) {
                        if (ch === 93) {  // ]
                            characterInBrack = false;
                        }
                    } else {
                        if (ch === 47) {  // /
                            result += '\\';
                        } else if (ch === 91) {  // [
                            characterInBrack = true;
                        }
                    }
                    result += escapeRegExpCharacter(ch, previousIsBackslash);
                    previousIsBackslash = ch === 92;  // \
                } else {
                    // if new RegExp("\\\n') is provided, create /\n/
                    result += escapeRegExpCharacter(ch, previousIsBackslash);
                    // prevent like /\\[/]/
                    previousIsBackslash = false;
                }
            }

            return '/' + result + '/' + flags;
        }

        return result;
    }

    function escapeAllowedCharacter(code, next) {
        var hex;

        if (code === 0x08  /* \b */) {
            return '\\b';
        }

        if (code === 0x0C  /* \f */) {
            return '\\f';
        }

        if (code === 0x09  /* \t */) {
            return '\\t';
        }

        hex = code.toString(16).toUpperCase();
        if (json || code > 0xFF) {
            return '\\u' + '0000'.slice(hex.length) + hex;
        } else if (code === 0x0000 && !esutils.code.isDecimalDigit(next)) {
            return '\\0';
        } else if (code === 0x000B  /* \v */) { // '\v'
            return '\\x0B';
        } else {
            return '\\x' + '00'.slice(hex.length) + hex;
        }
    }

    function escapeDisallowedCharacter(code) {
        if (code === 0x5C  /* \ */) {
            return '\\\\';
        }

        if (code === 0x0A  /* \n */) {
            return '\\n';
        }

        if (code === 0x0D  /* \r */) {
            return '\\r';
        }

        if (code === 0x2028) {
            return '\\u2028';
        }

        if (code === 0x2029) {
            return '\\u2029';
        }

        throw new Error('Incorrectly classified character');
    }

    function escapeDirective(str) {
        var i, iz, code, quote;

        quote = quotes === 'double' ? '"' : '\'';
        for (i = 0, iz = str.length; i < iz; ++i) {
            code = str.charCodeAt(i);
            if (code === 0x27  /* ' */) {
                quote = '"';
                break;
            } else if (code === 0x22  /* " */) {
                quote = '\'';
                break;
            } else if (code === 0x5C  /* \ */) {
                ++i;
            }
        }

        return quote + str + quote;
    }

    function escapeString(str) {
        var result = '', i, len, code, singleQuotes = 0, doubleQuotes = 0, single, quote;

        for (i = 0, len = str.length; i < len; ++i) {
            code = str.charCodeAt(i);
            if (code === 0x27  /* ' */) {
                ++singleQuotes;
            } else if (code === 0x22  /* " */) {
                ++doubleQuotes;
            } else if (code === 0x2F  /* / */ && json) {
                result += '\\';
            } else if (esutils.code.isLineTerminator(code) || code === 0x5C  /* \ */) {
                result += escapeDisallowedCharacter(code);
                continue;
            } else if (!esutils.code.isIdentifierPartES5(code) && (json && code < 0x20  /* SP */ || !json && !escapeless && (code < 0x20  /* SP */ || code > 0x7E  /* ~ */))) {
                result += escapeAllowedCharacter(code, str.charCodeAt(i + 1));
                continue;
            }
            result += String.fromCharCode(code);
        }

        single = !(quotes === 'double' || (quotes === 'auto' && doubleQuotes < singleQuotes));
        quote = single ? '\'' : '"';

        if (!(single ? singleQuotes : doubleQuotes)) {
            return quote + result + quote;
        }

        str = result;
        result = quote;

        for (i = 0, len = str.length; i < len; ++i) {
            code = str.charCodeAt(i);
            if ((code === 0x27  /* ' */ && single) || (code === 0x22  /* " */ && !single)) {
                result += '\\';
            }
            result += String.fromCharCode(code);
        }

        return result + quote;
    }

    /**
     * flatten an array to a string, where the array can contain
     * either strings or nested arrays
     */
    function flattenToString(arr) {
        var i, iz, elem, result = '';
        for (i = 0, iz = arr.length; i < iz; ++i) {
            elem = arr[i];
            result += Array.isArray(elem) ? flattenToString(elem) : elem;
        }
        return result;
    }

    /**
     * convert generated to a SourceNode when source maps are enabled.
     */
    function toSourceNodeWhenNeeded(generated, node) {
        if (!sourceMap$1) {
            // with no source maps, generated is either an
            // array or a string.  if an array, flatten it.
            // if a string, just return it
            if (Array.isArray(generated)) {
                return flattenToString(generated);
            } else {
                return generated;
            }
        }
        if (node == null) {
            if (generated instanceof SourceNode) {
                return generated;
            } else {
                node = {};
            }
        }
        if (node.loc == null) {
            return new SourceNode(null, null, sourceMap$1, generated, node.name || null);
        }
        return new SourceNode(node.loc.start.line, node.loc.start.column, (sourceMap$1 === true ? node.loc.source || null : sourceMap$1), generated, node.name || null);
    }

    function noEmptySpace() {
        return (space) ? space : ' ';
    }

    function join(left, right) {
        var leftSource,
            rightSource,
            leftCharCode,
            rightCharCode;

        leftSource = toSourceNodeWhenNeeded(left).toString();
        if (leftSource.length === 0) {
            return [right];
        }

        rightSource = toSourceNodeWhenNeeded(right).toString();
        if (rightSource.length === 0) {
            return [left];
        }

        leftCharCode = leftSource.charCodeAt(leftSource.length - 1);
        rightCharCode = rightSource.charCodeAt(0);

        if ((leftCharCode === 0x2B  /* + */ || leftCharCode === 0x2D  /* - */) && leftCharCode === rightCharCode ||
            esutils.code.isIdentifierPartES5(leftCharCode) && esutils.code.isIdentifierPartES5(rightCharCode) ||
            leftCharCode === 0x2F  /* / */ && rightCharCode === 0x69  /* i */) { // infix word operators all start with `i`
            return [left, noEmptySpace(), right];
        } else if (esutils.code.isWhiteSpace(leftCharCode) || esutils.code.isLineTerminator(leftCharCode) ||
                esutils.code.isWhiteSpace(rightCharCode) || esutils.code.isLineTerminator(rightCharCode)) {
            return [left, right];
        }
        return [left, space, right];
    }

    function addIndent(stmt) {
        return [base, stmt];
    }

    function withIndent(fn) {
        var previousBase;
        previousBase = base;
        base += indent;
        fn(base);
        base = previousBase;
    }

    function calculateSpaces(str) {
        var i;
        for (i = str.length - 1; i >= 0; --i) {
            if (esutils.code.isLineTerminator(str.charCodeAt(i))) {
                break;
            }
        }
        return (str.length - 1) - i;
    }

    function adjustMultilineComment(value, specialBase) {
        var array, i, len, line, j, spaces, previousBase, sn;

        array = value.split(/\r\n|[\r\n]/);
        spaces = Number.MAX_VALUE;

        // first line doesn't have indentation
        for (i = 1, len = array.length; i < len; ++i) {
            line = array[i];
            j = 0;
            while (j < line.length && esutils.code.isWhiteSpace(line.charCodeAt(j))) {
                ++j;
            }
            if (spaces > j) {
                spaces = j;
            }
        }

        if (typeof specialBase !== 'undefined') {
            // pattern like
            // {
            //   var t = 20;  /*
            //                 * this is comment
            //                 */
            // }
            previousBase = base;
            if (array[1][spaces] === '*') {
                specialBase += ' ';
            }
            base = specialBase;
        } else {
            if (spaces & 1) {
                // /*
                //  *
                //  */
                // If spaces are odd number, above pattern is considered.
                // We waste 1 space.
                --spaces;
            }
            previousBase = base;
        }

        for (i = 1, len = array.length; i < len; ++i) {
            sn = toSourceNodeWhenNeeded(addIndent(array[i].slice(spaces)));
            array[i] = sourceMap$1 ? sn.join('') : sn;
        }

        base = previousBase;

        return array.join('\n');
    }

    function generateComment(comment, specialBase) {
        if (comment.type === 'Line') {
            if (endsWithLineTerminator(comment.value)) {
                return '//' + comment.value;
            } else {
                // Always use LineTerminator
                var result = '//' + comment.value;
                if (!preserveBlankLines) {
                    result += '\n';
                }
                return result;
            }
        }
        if (extra.format.indent.adjustMultilineComment && /[\n\r]/.test(comment.value)) {
            return adjustMultilineComment('/*' + comment.value + '*/', specialBase);
        }
        return '/*' + comment.value + '*/';
    }

    function addComments(stmt, result) {
        var i, len, comment, save, tailingToStatement, specialBase, fragment,
            extRange, range, prevRange, prefix, infix, suffix, count;

        if (stmt.leadingComments && stmt.leadingComments.length > 0) {
            save = result;

            if (preserveBlankLines) {
                comment = stmt.leadingComments[0];
                result = [];

                extRange = comment.extendedRange;
                range = comment.range;

                prefix = sourceCode.substring(extRange[0], range[0]);
                count = (prefix.match(/\n/g) || []).length;
                if (count > 0) {
                    result.push(stringRepeat('\n', count));
                    result.push(addIndent(generateComment(comment)));
                } else {
                    result.push(prefix);
                    result.push(generateComment(comment));
                }

                prevRange = range;

                for (i = 1, len = stmt.leadingComments.length; i < len; i++) {
                    comment = stmt.leadingComments[i];
                    range = comment.range;

                    infix = sourceCode.substring(prevRange[1], range[0]);
                    count = (infix.match(/\n/g) || []).length;
                    result.push(stringRepeat('\n', count));
                    result.push(addIndent(generateComment(comment)));

                    prevRange = range;
                }

                suffix = sourceCode.substring(range[1], extRange[1]);
                count = (suffix.match(/\n/g) || []).length;
                result.push(stringRepeat('\n', count));
            } else {
                comment = stmt.leadingComments[0];
                result = [];
                if (safeConcatenation && stmt.type === Syntax.Program && stmt.body.length === 0) {
                    result.push('\n');
                }
                result.push(generateComment(comment));
                if (!endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
                    result.push('\n');
                }

                for (i = 1, len = stmt.leadingComments.length; i < len; ++i) {
                    comment = stmt.leadingComments[i];
                    fragment = [generateComment(comment)];
                    if (!endsWithLineTerminator(toSourceNodeWhenNeeded(fragment).toString())) {
                        fragment.push('\n');
                    }
                    result.push(addIndent(fragment));
                }
            }

            result.push(addIndent(save));
        }

        if (stmt.trailingComments) {

            if (preserveBlankLines) {
                comment = stmt.trailingComments[0];
                extRange = comment.extendedRange;
                range = comment.range;

                prefix = sourceCode.substring(extRange[0], range[0]);
                count = (prefix.match(/\n/g) || []).length;

                if (count > 0) {
                    result.push(stringRepeat('\n', count));
                    result.push(addIndent(generateComment(comment)));
                } else {
                    result.push(prefix);
                    result.push(generateComment(comment));
                }
            } else {
                tailingToStatement = !endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString());
                specialBase = stringRepeat(' ', calculateSpaces(toSourceNodeWhenNeeded([base, result, indent]).toString()));
                for (i = 0, len = stmt.trailingComments.length; i < len; ++i) {
                    comment = stmt.trailingComments[i];
                    if (tailingToStatement) {
                        // We assume target like following script
                        //
                        // var t = 20;  /**
                        //               * This is comment of t
                        //               */
                        if (i === 0) {
                            // first case
                            result = [result, indent];
                        } else {
                            result = [result, specialBase];
                        }
                        result.push(generateComment(comment, specialBase));
                    } else {
                        result = [result, addIndent(generateComment(comment))];
                    }
                    if (i !== len - 1 && !endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
                        result = [result, '\n'];
                    }
                }
            }
        }

        return result;
    }

    function generateBlankLines(start, end, result) {
        var j, newlineCount = 0;

        for (j = start; j < end; j++) {
            if (sourceCode[j] === '\n') {
                newlineCount++;
            }
        }

        for (j = 1; j < newlineCount; j++) {
            result.push(newline);
        }
    }

    function parenthesize(text, current, should) {
        if (current < should) {
            return ['(', text, ')'];
        }
        return text;
    }

    function generateVerbatimString(string) {
        var i, iz, result;
        result = string.split(/\r\n|\n/);
        for (i = 1, iz = result.length; i < iz; i++) {
            result[i] = newline + base + result[i];
        }
        return result;
    }

    function generateVerbatim(expr, precedence) {
        var verbatim, result, prec;
        verbatim = expr[extra.verbatim];

        if (typeof verbatim === 'string') {
            result = parenthesize(generateVerbatimString(verbatim), Precedence.Sequence, precedence);
        } else {
            // verbatim is object
            result = generateVerbatimString(verbatim.content);
            prec = (verbatim.precedence != null) ? verbatim.precedence : Precedence.Sequence;
            result = parenthesize(result, prec, precedence);
        }

        return toSourceNodeWhenNeeded(result, expr);
    }

    function CodeGenerator() {
    }

    // Helpers.

    CodeGenerator.prototype.maybeBlock = function(stmt, flags) {
        var result, noLeadingComment, that = this;

        noLeadingComment = !extra.comment || !stmt.leadingComments;

        if (stmt.type === Syntax.BlockStatement && noLeadingComment) {
            return [space, this.generateStatement(stmt, flags)];
        }

        if (stmt.type === Syntax.EmptyStatement && noLeadingComment) {
            return ';';
        }

        withIndent(function () {
            result = [
                newline,
                addIndent(that.generateStatement(stmt, flags))
            ];
        });

        return result;
    };

    CodeGenerator.prototype.maybeBlockSuffix = function (stmt, result) {
        var ends = endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString());
        if (stmt.type === Syntax.BlockStatement && (!extra.comment || !stmt.leadingComments) && !ends) {
            return [result, space];
        }
        if (ends) {
            return [result, base];
        }
        return [result, newline, base];
    };

    function generateIdentifier(node) {
        return toSourceNodeWhenNeeded(node.name, node);
    }

    function generateAsyncPrefix(node, spaceRequired) {
        return node.async ? 'async' + (spaceRequired ? noEmptySpace() : space) : '';
    }

    function generateStarSuffix(node) {
        var isGenerator = node.generator && !extra.moz.starlessGenerator;
        return isGenerator ? '*' + space : '';
    }

    function generateMethodPrefix(prop) {
        var func = prop.value, prefix = '';
        if (func.async) {
            prefix += generateAsyncPrefix(func, !prop.computed);
        }
        if (func.generator) {
            // avoid space before method name
            prefix += generateStarSuffix(func) ? '*' : '';
        }
        return prefix;
    }

    CodeGenerator.prototype.generatePattern = function (node, precedence, flags) {
        if (node.type === Syntax.Identifier) {
            return generateIdentifier(node);
        }
        return this.generateExpression(node, precedence, flags);
    };

    CodeGenerator.prototype.generateFunctionParams = function (node) {
        var i, iz, result, hasDefault;

        hasDefault = false;

        if (node.type === Syntax.ArrowFunctionExpression &&
                !node.rest && (!node.defaults || node.defaults.length === 0) &&
                node.params.length === 1 && node.params[0].type === Syntax.Identifier) {
            // arg => { } case
            result = [generateAsyncPrefix(node, true), generateIdentifier(node.params[0])];
        } else {
            result = node.type === Syntax.ArrowFunctionExpression ? [generateAsyncPrefix(node, false)] : [];
            result.push('(');
            if (node.defaults) {
                hasDefault = true;
            }
            for (i = 0, iz = node.params.length; i < iz; ++i) {
                if (hasDefault && node.defaults[i]) {
                    // Handle default values.
                    result.push(this.generateAssignment(node.params[i], node.defaults[i], '=', Precedence.Assignment, E_TTT));
                } else {
                    result.push(this.generatePattern(node.params[i], Precedence.Assignment, E_TTT));
                }
                if (i + 1 < iz) {
                    result.push(',' + space);
                }
            }

            if (node.rest) {
                if (node.params.length) {
                    result.push(',' + space);
                }
                result.push('...');
                result.push(generateIdentifier(node.rest));
            }

            result.push(')');
        }

        return result;
    };

    CodeGenerator.prototype.generateFunctionBody = function (node) {
        var result, expr;

        result = this.generateFunctionParams(node);

        if (node.type === Syntax.ArrowFunctionExpression) {
            result.push(space);
            result.push('=>');
        }

        if (node.expression) {
            result.push(space);
            expr = this.generateExpression(node.body, Precedence.Assignment, E_TTT);
            if (expr.toString().charAt(0) === '{') {
                expr = ['(', expr, ')'];
            }
            result.push(expr);
        } else {
            result.push(this.maybeBlock(node.body, S_TTFF));
        }

        return result;
    };

    CodeGenerator.prototype.generateIterationForStatement = function (operator, stmt, flags) {
        var result = ['for' + (stmt.await ? noEmptySpace() + 'await' : '') + space + '('], that = this;
        withIndent(function () {
            if (stmt.left.type === Syntax.VariableDeclaration) {
                withIndent(function () {
                    result.push(stmt.left.kind + noEmptySpace());
                    result.push(that.generateStatement(stmt.left.declarations[0], S_FFFF));
                });
            } else {
                result.push(that.generateExpression(stmt.left, Precedence.Call, E_TTT));
            }

            result = join(result, operator);
            result = [join(
                result,
                that.generateExpression(stmt.right, Precedence.Assignment, E_TTT)
            ), ')'];
        });
        result.push(this.maybeBlock(stmt.body, flags));
        return result;
    };

    CodeGenerator.prototype.generatePropertyKey = function (expr, computed) {
        var result = [];

        if (computed) {
            result.push('[');
        }

        result.push(this.generateExpression(expr, Precedence.Sequence, E_TTT));

        if (computed) {
            result.push(']');
        }

        return result;
    };

    CodeGenerator.prototype.generateAssignment = function (left, right, operator, precedence, flags) {
        if (Precedence.Assignment < precedence) {
            flags |= F_ALLOW_IN;
        }

        return parenthesize(
            [
                this.generateExpression(left, Precedence.Call, flags),
                space + operator + space,
                this.generateExpression(right, Precedence.Assignment, flags)
            ],
            Precedence.Assignment,
            precedence
        );
    };

    CodeGenerator.prototype.semicolon = function (flags) {
        if (!semicolons && flags & F_SEMICOLON_OPT) {
            return '';
        }
        return ';';
    };

    // Statements.

    CodeGenerator.Statement = {

        BlockStatement: function (stmt, flags) {
            var range, content, result = ['{', newline], that = this;

            withIndent(function () {
                // handle functions without any code
                if (stmt.body.length === 0 && preserveBlankLines) {
                    range = stmt.range;
                    if (range[1] - range[0] > 2) {
                        content = sourceCode.substring(range[0] + 1, range[1] - 1);
                        if (content[0] === '\n') {
                            result = ['{'];
                        }
                        result.push(content);
                    }
                }

                var i, iz, fragment, bodyFlags;
                bodyFlags = S_TFFF;
                if (flags & F_FUNC_BODY) {
                    bodyFlags |= F_DIRECTIVE_CTX;
                }

                for (i = 0, iz = stmt.body.length; i < iz; ++i) {
                    if (preserveBlankLines) {
                        // handle spaces before the first line
                        if (i === 0) {
                            if (stmt.body[0].leadingComments) {
                                range = stmt.body[0].leadingComments[0].extendedRange;
                                content = sourceCode.substring(range[0], range[1]);
                                if (content[0] === '\n') {
                                    result = ['{'];
                                }
                            }
                            if (!stmt.body[0].leadingComments) {
                                generateBlankLines(stmt.range[0], stmt.body[0].range[0], result);
                            }
                        }

                        // handle spaces between lines
                        if (i > 0) {
                            if (!stmt.body[i - 1].trailingComments  && !stmt.body[i].leadingComments) {
                                generateBlankLines(stmt.body[i - 1].range[1], stmt.body[i].range[0], result);
                            }
                        }
                    }

                    if (i === iz - 1) {
                        bodyFlags |= F_SEMICOLON_OPT;
                    }

                    if (stmt.body[i].leadingComments && preserveBlankLines) {
                        fragment = that.generateStatement(stmt.body[i], bodyFlags);
                    } else {
                        fragment = addIndent(that.generateStatement(stmt.body[i], bodyFlags));
                    }

                    result.push(fragment);
                    if (!endsWithLineTerminator(toSourceNodeWhenNeeded(fragment).toString())) {
                        if (preserveBlankLines && i < iz - 1) {
                            // don't add a new line if there are leading coments
                            // in the next statement
                            if (!stmt.body[i + 1].leadingComments) {
                                result.push(newline);
                            }
                        } else {
                            result.push(newline);
                        }
                    }

                    if (preserveBlankLines) {
                        // handle spaces after the last line
                        if (i === iz - 1) {
                            if (!stmt.body[i].trailingComments) {
                                generateBlankLines(stmt.body[i].range[1], stmt.range[1], result);
                            }
                        }
                    }
                }
            });

            result.push(addIndent('}'));
            return result;
        },

        BreakStatement: function (stmt, flags) {
            if (stmt.label) {
                return 'break ' + stmt.label.name + this.semicolon(flags);
            }
            return 'break' + this.semicolon(flags);
        },

        ContinueStatement: function (stmt, flags) {
            if (stmt.label) {
                return 'continue ' + stmt.label.name + this.semicolon(flags);
            }
            return 'continue' + this.semicolon(flags);
        },

        ClassBody: function (stmt, flags) {
            var result = [ '{', newline], that = this;

            withIndent(function (indent) {
                var i, iz;

                for (i = 0, iz = stmt.body.length; i < iz; ++i) {
                    result.push(indent);
                    result.push(that.generateExpression(stmt.body[i], Precedence.Sequence, E_TTT));
                    if (i + 1 < iz) {
                        result.push(newline);
                    }
                }
            });

            if (!endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
                result.push(newline);
            }
            result.push(base);
            result.push('}');
            return result;
        },

        ClassDeclaration: function (stmt, flags) {
            var result, fragment;
            result  = ['class'];
            if (stmt.id) {
                result = join(result, this.generateExpression(stmt.id, Precedence.Sequence, E_TTT));
            }
            if (stmt.superClass) {
                fragment = join('extends', this.generateExpression(stmt.superClass, Precedence.Unary, E_TTT));
                result = join(result, fragment);
            }
            result.push(space);
            result.push(this.generateStatement(stmt.body, S_TFFT));
            return result;
        },

        DirectiveStatement: function (stmt, flags) {
            if (extra.raw && stmt.raw) {
                return stmt.raw + this.semicolon(flags);
            }
            return escapeDirective(stmt.directive) + this.semicolon(flags);
        },

        DoWhileStatement: function (stmt, flags) {
            // Because `do 42 while (cond)` is Syntax Error. We need semicolon.
            var result = join('do', this.maybeBlock(stmt.body, S_TFFF));
            result = this.maybeBlockSuffix(stmt.body, result);
            return join(result, [
                'while' + space + '(',
                this.generateExpression(stmt.test, Precedence.Sequence, E_TTT),
                ')' + this.semicolon(flags)
            ]);
        },

        CatchClause: function (stmt, flags) {
            var result, that = this;
            withIndent(function () {
                var guard;

                if (stmt.param) {
                    result = [
                        'catch' + space + '(',
                        that.generateExpression(stmt.param, Precedence.Sequence, E_TTT),
                        ')'
                    ];

                    if (stmt.guard) {
                        guard = that.generateExpression(stmt.guard, Precedence.Sequence, E_TTT);
                        result.splice(2, 0, ' if ', guard);
                    }
                } else {
                    result = ['catch'];
                }
            });
            result.push(this.maybeBlock(stmt.body, S_TFFF));
            return result;
        },

        DebuggerStatement: function (stmt, flags) {
            return 'debugger' + this.semicolon(flags);
        },

        EmptyStatement: function (stmt, flags) {
            return ';';
        },

        ExportDefaultDeclaration: function (stmt, flags) {
            var result = [ 'export' ], bodyFlags;

            bodyFlags = (flags & F_SEMICOLON_OPT) ? S_TFFT : S_TFFF;

            // export default HoistableDeclaration[Default]
            // export default AssignmentExpression[In] ;
            result = join(result, 'default');
            if (isStatement(stmt.declaration)) {
                result = join(result, this.generateStatement(stmt.declaration, bodyFlags));
            } else {
                result = join(result, this.generateExpression(stmt.declaration, Precedence.Assignment, E_TTT) + this.semicolon(flags));
            }
            return result;
        },

        ExportNamedDeclaration: function (stmt, flags) {
            var result = [ 'export' ], bodyFlags, that = this;

            bodyFlags = (flags & F_SEMICOLON_OPT) ? S_TFFT : S_TFFF;

            // export VariableStatement
            // export Declaration[Default]
            if (stmt.declaration) {
                return join(result, this.generateStatement(stmt.declaration, bodyFlags));
            }

            // export ExportClause[NoReference] FromClause ;
            // export ExportClause ;
            if (stmt.specifiers) {
                if (stmt.specifiers.length === 0) {
                    result = join(result, '{' + space + '}');
                } else if (stmt.specifiers[0].type === Syntax.ExportBatchSpecifier) {
                    result = join(result, this.generateExpression(stmt.specifiers[0], Precedence.Sequence, E_TTT));
                } else {
                    result = join(result, '{');
                    withIndent(function (indent) {
                        var i, iz;
                        result.push(newline);
                        for (i = 0, iz = stmt.specifiers.length; i < iz; ++i) {
                            result.push(indent);
                            result.push(that.generateExpression(stmt.specifiers[i], Precedence.Sequence, E_TTT));
                            if (i + 1 < iz) {
                                result.push(',' + newline);
                            }
                        }
                    });
                    if (!endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
                        result.push(newline);
                    }
                    result.push(base + '}');
                }

                if (stmt.source) {
                    result = join(result, [
                        'from' + space,
                        // ModuleSpecifier
                        this.generateExpression(stmt.source, Precedence.Sequence, E_TTT),
                        this.semicolon(flags)
                    ]);
                } else {
                    result.push(this.semicolon(flags));
                }
            }
            return result;
        },

        ExportAllDeclaration: function (stmt, flags) {
            // export * FromClause ;
            return [
                'export' + space,
                '*' + space,
                'from' + space,
                // ModuleSpecifier
                this.generateExpression(stmt.source, Precedence.Sequence, E_TTT),
                this.semicolon(flags)
            ];
        },

        ExpressionStatement: function (stmt, flags) {
            var result, fragment;

            function isClassPrefixed(fragment) {
                var code;
                if (fragment.slice(0, 5) !== 'class') {
                    return false;
                }
                code = fragment.charCodeAt(5);
                return code === 0x7B  /* '{' */ || esutils.code.isWhiteSpace(code) || esutils.code.isLineTerminator(code);
            }

            function isFunctionPrefixed(fragment) {
                var code;
                if (fragment.slice(0, 8) !== 'function') {
                    return false;
                }
                code = fragment.charCodeAt(8);
                return code === 0x28 /* '(' */ || esutils.code.isWhiteSpace(code) || code === 0x2A  /* '*' */ || esutils.code.isLineTerminator(code);
            }

            function isAsyncPrefixed(fragment) {
                var code, i, iz;
                if (fragment.slice(0, 5) !== 'async') {
                    return false;
                }
                if (!esutils.code.isWhiteSpace(fragment.charCodeAt(5))) {
                    return false;
                }
                for (i = 6, iz = fragment.length; i < iz; ++i) {
                    if (!esutils.code.isWhiteSpace(fragment.charCodeAt(i))) {
                        break;
                    }
                }
                if (i === iz) {
                    return false;
                }
                if (fragment.slice(i, i + 8) !== 'function') {
                    return false;
                }
                code = fragment.charCodeAt(i + 8);
                return code === 0x28 /* '(' */ || esutils.code.isWhiteSpace(code) || code === 0x2A  /* '*' */ || esutils.code.isLineTerminator(code);
            }

            result = [this.generateExpression(stmt.expression, Precedence.Sequence, E_TTT)];
            // 12.4 '{', 'function', 'class' is not allowed in this position.
            // wrap expression with parentheses
            fragment = toSourceNodeWhenNeeded(result).toString();
            if (fragment.charCodeAt(0) === 0x7B  /* '{' */ ||  // ObjectExpression
                    isClassPrefixed(fragment) ||
                    isFunctionPrefixed(fragment) ||
                    isAsyncPrefixed(fragment) ||
                    (directive && (flags & F_DIRECTIVE_CTX) && stmt.expression.type === Syntax.Literal && typeof stmt.expression.value === 'string')) {
                result = ['(', result, ')' + this.semicolon(flags)];
            } else {
                result.push(this.semicolon(flags));
            }
            return result;
        },

        ImportDeclaration: function (stmt, flags) {
            // ES6: 15.2.1 valid import declarations:
            //     - import ImportClause FromClause ;
            //     - import ModuleSpecifier ;
            var result, cursor, that = this;

            // If no ImportClause is present,
            // this should be `import ModuleSpecifier` so skip `from`
            // ModuleSpecifier is StringLiteral.
            if (stmt.specifiers.length === 0) {
                // import ModuleSpecifier ;
                return [
                    'import',
                    space,
                    // ModuleSpecifier
                    this.generateExpression(stmt.source, Precedence.Sequence, E_TTT),
                    this.semicolon(flags)
                ];
            }

            // import ImportClause FromClause ;
            result = [
                'import'
            ];
            cursor = 0;

            // ImportedBinding
            if (stmt.specifiers[cursor].type === Syntax.ImportDefaultSpecifier) {
                result = join(result, [
                        this.generateExpression(stmt.specifiers[cursor], Precedence.Sequence, E_TTT)
                ]);
                ++cursor;
            }

            if (stmt.specifiers[cursor]) {
                if (cursor !== 0) {
                    result.push(',');
                }

                if (stmt.specifiers[cursor].type === Syntax.ImportNamespaceSpecifier) {
                    // NameSpaceImport
                    result = join(result, [
                            space,
                            this.generateExpression(stmt.specifiers[cursor], Precedence.Sequence, E_TTT)
                    ]);
                } else {
                    // NamedImports
                    result.push(space + '{');

                    if ((stmt.specifiers.length - cursor) === 1) {
                        // import { ... } from "...";
                        result.push(space);
                        result.push(this.generateExpression(stmt.specifiers[cursor], Precedence.Sequence, E_TTT));
                        result.push(space + '}' + space);
                    } else {
                        // import {
                        //    ...,
                        //    ...,
                        // } from "...";
                        withIndent(function (indent) {
                            var i, iz;
                            result.push(newline);
                            for (i = cursor, iz = stmt.specifiers.length; i < iz; ++i) {
                                result.push(indent);
                                result.push(that.generateExpression(stmt.specifiers[i], Precedence.Sequence, E_TTT));
                                if (i + 1 < iz) {
                                    result.push(',' + newline);
                                }
                            }
                        });
                        if (!endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
                            result.push(newline);
                        }
                        result.push(base + '}' + space);
                    }
                }
            }

            result = join(result, [
                'from' + space,
                // ModuleSpecifier
                this.generateExpression(stmt.source, Precedence.Sequence, E_TTT),
                this.semicolon(flags)
            ]);
            return result;
        },

        VariableDeclarator: function (stmt, flags) {
            var itemFlags = (flags & F_ALLOW_IN) ? E_TTT : E_FTT;
            if (stmt.init) {
                return [
                    this.generateExpression(stmt.id, Precedence.Assignment, itemFlags),
                    space,
                    '=',
                    space,
                    this.generateExpression(stmt.init, Precedence.Assignment, itemFlags)
                ];
            }
            return this.generatePattern(stmt.id, Precedence.Assignment, itemFlags);
        },

        VariableDeclaration: function (stmt, flags) {
            // VariableDeclarator is typed as Statement,
            // but joined with comma (not LineTerminator).
            // So if comment is attached to target node, we should specialize.
            var result, i, iz, node, bodyFlags, that = this;

            result = [ stmt.kind ];

            bodyFlags = (flags & F_ALLOW_IN) ? S_TFFF : S_FFFF;

            function block() {
                node = stmt.declarations[0];
                if (extra.comment && node.leadingComments) {
                    result.push('\n');
                    result.push(addIndent(that.generateStatement(node, bodyFlags)));
                } else {
                    result.push(noEmptySpace());
                    result.push(that.generateStatement(node, bodyFlags));
                }

                for (i = 1, iz = stmt.declarations.length; i < iz; ++i) {
                    node = stmt.declarations[i];
                    if (extra.comment && node.leadingComments) {
                        result.push(',' + newline);
                        result.push(addIndent(that.generateStatement(node, bodyFlags)));
                    } else {
                        result.push(',' + space);
                        result.push(that.generateStatement(node, bodyFlags));
                    }
                }
            }

            if (stmt.declarations.length > 1) {
                withIndent(block);
            } else {
                block();
            }

            result.push(this.semicolon(flags));

            return result;
        },

        ThrowStatement: function (stmt, flags) {
            return [join(
                'throw',
                this.generateExpression(stmt.argument, Precedence.Sequence, E_TTT)
            ), this.semicolon(flags)];
        },

        TryStatement: function (stmt, flags) {
            var result, i, iz, guardedHandlers;

            result = ['try', this.maybeBlock(stmt.block, S_TFFF)];
            result = this.maybeBlockSuffix(stmt.block, result);

            if (stmt.handlers) {
                // old interface
                for (i = 0, iz = stmt.handlers.length; i < iz; ++i) {
                    result = join(result, this.generateStatement(stmt.handlers[i], S_TFFF));
                    if (stmt.finalizer || i + 1 !== iz) {
                        result = this.maybeBlockSuffix(stmt.handlers[i].body, result);
                    }
                }
            } else {
                guardedHandlers = stmt.guardedHandlers || [];

                for (i = 0, iz = guardedHandlers.length; i < iz; ++i) {
                    result = join(result, this.generateStatement(guardedHandlers[i], S_TFFF));
                    if (stmt.finalizer || i + 1 !== iz) {
                        result = this.maybeBlockSuffix(guardedHandlers[i].body, result);
                    }
                }

                // new interface
                if (stmt.handler) {
                    if (Array.isArray(stmt.handler)) {
                        for (i = 0, iz = stmt.handler.length; i < iz; ++i) {
                            result = join(result, this.generateStatement(stmt.handler[i], S_TFFF));
                            if (stmt.finalizer || i + 1 !== iz) {
                                result = this.maybeBlockSuffix(stmt.handler[i].body, result);
                            }
                        }
                    } else {
                        result = join(result, this.generateStatement(stmt.handler, S_TFFF));
                        if (stmt.finalizer) {
                            result = this.maybeBlockSuffix(stmt.handler.body, result);
                        }
                    }
                }
            }
            if (stmt.finalizer) {
                result = join(result, ['finally', this.maybeBlock(stmt.finalizer, S_TFFF)]);
            }
            return result;
        },

        SwitchStatement: function (stmt, flags) {
            var result, fragment, i, iz, bodyFlags, that = this;
            withIndent(function () {
                result = [
                    'switch' + space + '(',
                    that.generateExpression(stmt.discriminant, Precedence.Sequence, E_TTT),
                    ')' + space + '{' + newline
                ];
            });
            if (stmt.cases) {
                bodyFlags = S_TFFF;
                for (i = 0, iz = stmt.cases.length; i < iz; ++i) {
                    if (i === iz - 1) {
                        bodyFlags |= F_SEMICOLON_OPT;
                    }
                    fragment = addIndent(this.generateStatement(stmt.cases[i], bodyFlags));
                    result.push(fragment);
                    if (!endsWithLineTerminator(toSourceNodeWhenNeeded(fragment).toString())) {
                        result.push(newline);
                    }
                }
            }
            result.push(addIndent('}'));
            return result;
        },

        SwitchCase: function (stmt, flags) {
            var result, fragment, i, iz, bodyFlags, that = this;
            withIndent(function () {
                if (stmt.test) {
                    result = [
                        join('case', that.generateExpression(stmt.test, Precedence.Sequence, E_TTT)),
                        ':'
                    ];
                } else {
                    result = ['default:'];
                }

                i = 0;
                iz = stmt.consequent.length;
                if (iz && stmt.consequent[0].type === Syntax.BlockStatement) {
                    fragment = that.maybeBlock(stmt.consequent[0], S_TFFF);
                    result.push(fragment);
                    i = 1;
                }

                if (i !== iz && !endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
                    result.push(newline);
                }

                bodyFlags = S_TFFF;
                for (; i < iz; ++i) {
                    if (i === iz - 1 && flags & F_SEMICOLON_OPT) {
                        bodyFlags |= F_SEMICOLON_OPT;
                    }
                    fragment = addIndent(that.generateStatement(stmt.consequent[i], bodyFlags));
                    result.push(fragment);
                    if (i + 1 !== iz && !endsWithLineTerminator(toSourceNodeWhenNeeded(fragment).toString())) {
                        result.push(newline);
                    }
                }
            });
            return result;
        },

        IfStatement: function (stmt, flags) {
            var result, bodyFlags, semicolonOptional, that = this;
            withIndent(function () {
                result = [
                    'if' + space + '(',
                    that.generateExpression(stmt.test, Precedence.Sequence, E_TTT),
                    ')'
                ];
            });
            semicolonOptional = flags & F_SEMICOLON_OPT;
            bodyFlags = S_TFFF;
            if (semicolonOptional) {
                bodyFlags |= F_SEMICOLON_OPT;
            }
            if (stmt.alternate) {
                result.push(this.maybeBlock(stmt.consequent, S_TFFF));
                result = this.maybeBlockSuffix(stmt.consequent, result);
                if (stmt.alternate.type === Syntax.IfStatement) {
                    result = join(result, ['else ', this.generateStatement(stmt.alternate, bodyFlags)]);
                } else {
                    result = join(result, join('else', this.maybeBlock(stmt.alternate, bodyFlags)));
                }
            } else {
                result.push(this.maybeBlock(stmt.consequent, bodyFlags));
            }
            return result;
        },

        ForStatement: function (stmt, flags) {
            var result, that = this;
            withIndent(function () {
                result = ['for' + space + '('];
                if (stmt.init) {
                    if (stmt.init.type === Syntax.VariableDeclaration) {
                        result.push(that.generateStatement(stmt.init, S_FFFF));
                    } else {
                        // F_ALLOW_IN becomes false.
                        result.push(that.generateExpression(stmt.init, Precedence.Sequence, E_FTT));
                        result.push(';');
                    }
                } else {
                    result.push(';');
                }

                if (stmt.test) {
                    result.push(space);
                    result.push(that.generateExpression(stmt.test, Precedence.Sequence, E_TTT));
                    result.push(';');
                } else {
                    result.push(';');
                }

                if (stmt.update) {
                    result.push(space);
                    result.push(that.generateExpression(stmt.update, Precedence.Sequence, E_TTT));
                    result.push(')');
                } else {
                    result.push(')');
                }
            });

            result.push(this.maybeBlock(stmt.body, flags & F_SEMICOLON_OPT ? S_TFFT : S_TFFF));
            return result;
        },

        ForInStatement: function (stmt, flags) {
            return this.generateIterationForStatement('in', stmt, flags & F_SEMICOLON_OPT ? S_TFFT : S_TFFF);
        },

        ForOfStatement: function (stmt, flags) {
            return this.generateIterationForStatement('of', stmt, flags & F_SEMICOLON_OPT ? S_TFFT : S_TFFF);
        },

        LabeledStatement: function (stmt, flags) {
            return [stmt.label.name + ':', this.maybeBlock(stmt.body, flags & F_SEMICOLON_OPT ? S_TFFT : S_TFFF)];
        },

        Program: function (stmt, flags) {
            var result, fragment, i, iz, bodyFlags;
            iz = stmt.body.length;
            result = [safeConcatenation && iz > 0 ? '\n' : ''];
            bodyFlags = S_TFTF;
            for (i = 0; i < iz; ++i) {
                if (!safeConcatenation && i === iz - 1) {
                    bodyFlags |= F_SEMICOLON_OPT;
                }

                if (preserveBlankLines) {
                    // handle spaces before the first line
                    if (i === 0) {
                        if (!stmt.body[0].leadingComments) {
                            generateBlankLines(stmt.range[0], stmt.body[i].range[0], result);
                        }
                    }

                    // handle spaces between lines
                    if (i > 0) {
                        if (!stmt.body[i - 1].trailingComments && !stmt.body[i].leadingComments) {
                            generateBlankLines(stmt.body[i - 1].range[1], stmt.body[i].range[0], result);
                        }
                    }
                }

                fragment = addIndent(this.generateStatement(stmt.body[i], bodyFlags));
                result.push(fragment);
                if (i + 1 < iz && !endsWithLineTerminator(toSourceNodeWhenNeeded(fragment).toString())) {
                    if (preserveBlankLines) {
                        if (!stmt.body[i + 1].leadingComments) {
                            result.push(newline);
                        }
                    } else {
                        result.push(newline);
                    }
                }

                if (preserveBlankLines) {
                    // handle spaces after the last line
                    if (i === iz - 1) {
                        if (!stmt.body[i].trailingComments) {
                            generateBlankLines(stmt.body[i].range[1], stmt.range[1], result);
                        }
                    }
                }
            }
            return result;
        },

        FunctionDeclaration: function (stmt, flags) {
            return [
                generateAsyncPrefix(stmt, true),
                'function',
                generateStarSuffix(stmt) || noEmptySpace(),
                stmt.id ? generateIdentifier(stmt.id) : '',
                this.generateFunctionBody(stmt)
            ];
        },

        ReturnStatement: function (stmt, flags) {
            if (stmt.argument) {
                return [join(
                    'return',
                    this.generateExpression(stmt.argument, Precedence.Sequence, E_TTT)
                ), this.semicolon(flags)];
            }
            return ['return' + this.semicolon(flags)];
        },

        WhileStatement: function (stmt, flags) {
            var result, that = this;
            withIndent(function () {
                result = [
                    'while' + space + '(',
                    that.generateExpression(stmt.test, Precedence.Sequence, E_TTT),
                    ')'
                ];
            });
            result.push(this.maybeBlock(stmt.body, flags & F_SEMICOLON_OPT ? S_TFFT : S_TFFF));
            return result;
        },

        WithStatement: function (stmt, flags) {
            var result, that = this;
            withIndent(function () {
                result = [
                    'with' + space + '(',
                    that.generateExpression(stmt.object, Precedence.Sequence, E_TTT),
                    ')'
                ];
            });
            result.push(this.maybeBlock(stmt.body, flags & F_SEMICOLON_OPT ? S_TFFT : S_TFFF));
            return result;
        }

    };

    merge(CodeGenerator.prototype, CodeGenerator.Statement);

    // Expressions.

    CodeGenerator.Expression = {

        SequenceExpression: function (expr, precedence, flags) {
            var result, i, iz;
            if (Precedence.Sequence < precedence) {
                flags |= F_ALLOW_IN;
            }
            result = [];
            for (i = 0, iz = expr.expressions.length; i < iz; ++i) {
                result.push(this.generateExpression(expr.expressions[i], Precedence.Assignment, flags));
                if (i + 1 < iz) {
                    result.push(',' + space);
                }
            }
            return parenthesize(result, Precedence.Sequence, precedence);
        },

        AssignmentExpression: function (expr, precedence, flags) {
            return this.generateAssignment(expr.left, expr.right, expr.operator, precedence, flags);
        },

        ArrowFunctionExpression: function (expr, precedence, flags) {
            return parenthesize(this.generateFunctionBody(expr), Precedence.ArrowFunction, precedence);
        },

        ConditionalExpression: function (expr, precedence, flags) {
            if (Precedence.Conditional < precedence) {
                flags |= F_ALLOW_IN;
            }
            return parenthesize(
                [
                    this.generateExpression(expr.test, Precedence.LogicalOR, flags),
                    space + '?' + space,
                    this.generateExpression(expr.consequent, Precedence.Assignment, flags),
                    space + ':' + space,
                    this.generateExpression(expr.alternate, Precedence.Assignment, flags)
                ],
                Precedence.Conditional,
                precedence
            );
        },

        LogicalExpression: function (expr, precedence, flags) {
            return this.BinaryExpression(expr, precedence, flags);
        },

        BinaryExpression: function (expr, precedence, flags) {
            var result, leftPrecedence, rightPrecedence, currentPrecedence, fragment, leftSource;
            currentPrecedence = BinaryPrecedence[expr.operator];
            leftPrecedence = expr.operator === '**' ? Precedence.Postfix : currentPrecedence;
            rightPrecedence = expr.operator === '**' ? currentPrecedence : currentPrecedence + 1;

            if (currentPrecedence < precedence) {
                flags |= F_ALLOW_IN;
            }

            fragment = this.generateExpression(expr.left, leftPrecedence, flags);

            leftSource = fragment.toString();

            if (leftSource.charCodeAt(leftSource.length - 1) === 0x2F /* / */ && esutils.code.isIdentifierPartES5(expr.operator.charCodeAt(0))) {
                result = [fragment, noEmptySpace(), expr.operator];
            } else {
                result = join(fragment, expr.operator);
            }

            fragment = this.generateExpression(expr.right, rightPrecedence, flags);

            if (expr.operator === '/' && fragment.toString().charAt(0) === '/' ||
            expr.operator.slice(-1) === '<' && fragment.toString().slice(0, 3) === '!--') {
                // If '/' concats with '/' or `<` concats with `!--`, it is interpreted as comment start
                result.push(noEmptySpace());
                result.push(fragment);
            } else {
                result = join(result, fragment);
            }

            if (expr.operator === 'in' && !(flags & F_ALLOW_IN)) {
                return ['(', result, ')'];
            }
            return parenthesize(result, currentPrecedence, precedence);
        },

        CallExpression: function (expr, precedence, flags) {
            var result, i, iz;
            // F_ALLOW_UNPARATH_NEW becomes false.
            result = [this.generateExpression(expr.callee, Precedence.Call, E_TTF)];
            result.push('(');
            for (i = 0, iz = expr['arguments'].length; i < iz; ++i) {
                result.push(this.generateExpression(expr['arguments'][i], Precedence.Assignment, E_TTT));
                if (i + 1 < iz) {
                    result.push(',' + space);
                }
            }
            result.push(')');

            if (!(flags & F_ALLOW_CALL)) {
                return ['(', result, ')'];
            }
            return parenthesize(result, Precedence.Call, precedence);
        },

        NewExpression: function (expr, precedence, flags) {
            var result, length, i, iz, itemFlags;
            length = expr['arguments'].length;

            // F_ALLOW_CALL becomes false.
            // F_ALLOW_UNPARATH_NEW may become false.
            itemFlags = (flags & F_ALLOW_UNPARATH_NEW && !parentheses && length === 0) ? E_TFT : E_TFF;

            result = join(
                'new',
                this.generateExpression(expr.callee, Precedence.New, itemFlags)
            );

            if (!(flags & F_ALLOW_UNPARATH_NEW) || parentheses || length > 0) {
                result.push('(');
                for (i = 0, iz = length; i < iz; ++i) {
                    result.push(this.generateExpression(expr['arguments'][i], Precedence.Assignment, E_TTT));
                    if (i + 1 < iz) {
                        result.push(',' + space);
                    }
                }
                result.push(')');
            }

            return parenthesize(result, Precedence.New, precedence);
        },

        MemberExpression: function (expr, precedence, flags) {
            var result, fragment;

            // F_ALLOW_UNPARATH_NEW becomes false.
            result = [this.generateExpression(expr.object, Precedence.Call, (flags & F_ALLOW_CALL) ? E_TTF : E_TFF)];

            if (expr.computed) {
                result.push('[');
                result.push(this.generateExpression(expr.property, Precedence.Sequence, flags & F_ALLOW_CALL ? E_TTT : E_TFT));
                result.push(']');
            } else {
                if (expr.object.type === Syntax.Literal && typeof expr.object.value === 'number') {
                    fragment = toSourceNodeWhenNeeded(result).toString();
                    // When the following conditions are all true,
                    //   1. No floating point
                    //   2. Don't have exponents
                    //   3. The last character is a decimal digit
                    //   4. Not hexadecimal OR octal number literal
                    // we should add a floating point.
                    if (
                            fragment.indexOf('.') < 0 &&
                            !/[eExX]/.test(fragment) &&
                            esutils.code.isDecimalDigit(fragment.charCodeAt(fragment.length - 1)) &&
                            !(fragment.length >= 2 && fragment.charCodeAt(0) === 48)  // '0'
                            ) {
                        result.push(' ');
                    }
                }
                result.push('.');
                result.push(generateIdentifier(expr.property));
            }

            return parenthesize(result, Precedence.Member, precedence);
        },

        MetaProperty: function (expr, precedence, flags) {
            var result;
            result = [];
            result.push(typeof expr.meta === "string" ? expr.meta : generateIdentifier(expr.meta));
            result.push('.');
            result.push(typeof expr.property === "string" ? expr.property : generateIdentifier(expr.property));
            return parenthesize(result, Precedence.Member, precedence);
        },

        UnaryExpression: function (expr, precedence, flags) {
            var result, fragment, rightCharCode, leftSource, leftCharCode;
            fragment = this.generateExpression(expr.argument, Precedence.Unary, E_TTT);

            if (space === '') {
                result = join(expr.operator, fragment);
            } else {
                result = [expr.operator];
                if (expr.operator.length > 2) {
                    // delete, void, typeof
                    // get `typeof []`, not `typeof[]`
                    result = join(result, fragment);
                } else {
                    // Prevent inserting spaces between operator and argument if it is unnecessary
                    // like, `!cond`
                    leftSource = toSourceNodeWhenNeeded(result).toString();
                    leftCharCode = leftSource.charCodeAt(leftSource.length - 1);
                    rightCharCode = fragment.toString().charCodeAt(0);

                    if (((leftCharCode === 0x2B  /* + */ || leftCharCode === 0x2D  /* - */) && leftCharCode === rightCharCode) ||
                            (esutils.code.isIdentifierPartES5(leftCharCode) && esutils.code.isIdentifierPartES5(rightCharCode))) {
                        result.push(noEmptySpace());
                        result.push(fragment);
                    } else {
                        result.push(fragment);
                    }
                }
            }
            return parenthesize(result, Precedence.Unary, precedence);
        },

        YieldExpression: function (expr, precedence, flags) {
            var result;
            if (expr.delegate) {
                result = 'yield*';
            } else {
                result = 'yield';
            }
            if (expr.argument) {
                result = join(
                    result,
                    this.generateExpression(expr.argument, Precedence.Yield, E_TTT)
                );
            }
            return parenthesize(result, Precedence.Yield, precedence);
        },

        AwaitExpression: function (expr, precedence, flags) {
            var result = join(
                expr.all ? 'await*' : 'await',
                this.generateExpression(expr.argument, Precedence.Await, E_TTT)
            );
            return parenthesize(result, Precedence.Await, precedence);
        },

        UpdateExpression: function (expr, precedence, flags) {
            if (expr.prefix) {
                return parenthesize(
                    [
                        expr.operator,
                        this.generateExpression(expr.argument, Precedence.Unary, E_TTT)
                    ],
                    Precedence.Unary,
                    precedence
                );
            }
            return parenthesize(
                [
                    this.generateExpression(expr.argument, Precedence.Postfix, E_TTT),
                    expr.operator
                ],
                Precedence.Postfix,
                precedence
            );
        },

        FunctionExpression: function (expr, precedence, flags) {
            var result = [
                generateAsyncPrefix(expr, true),
                'function'
            ];
            if (expr.id) {
                result.push(generateStarSuffix(expr) || noEmptySpace());
                result.push(generateIdentifier(expr.id));
            } else {
                result.push(generateStarSuffix(expr) || space);
            }
            result.push(this.generateFunctionBody(expr));
            return result;
        },

        ArrayPattern: function (expr, precedence, flags) {
            return this.ArrayExpression(expr, precedence, flags, true);
        },

        ArrayExpression: function (expr, precedence, flags, isPattern) {
            var result, multiline, that = this;
            if (!expr.elements.length) {
                return '[]';
            }
            multiline = isPattern ? false : expr.elements.length > 1;
            result = ['[', multiline ? newline : ''];
            withIndent(function (indent) {
                var i, iz;
                for (i = 0, iz = expr.elements.length; i < iz; ++i) {
                    if (!expr.elements[i]) {
                        if (multiline) {
                            result.push(indent);
                        }
                        if (i + 1 === iz) {
                            result.push(',');
                        }
                    } else {
                        result.push(multiline ? indent : '');
                        result.push(that.generateExpression(expr.elements[i], Precedence.Assignment, E_TTT));
                    }
                    if (i + 1 < iz) {
                        result.push(',' + (multiline ? newline : space));
                    }
                }
            });
            if (multiline && !endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
                result.push(newline);
            }
            result.push(multiline ? base : '');
            result.push(']');
            return result;
        },

        RestElement: function(expr, precedence, flags) {
            return '...' + this.generatePattern(expr.argument);
        },

        ClassExpression: function (expr, precedence, flags) {
            var result, fragment;
            result = ['class'];
            if (expr.id) {
                result = join(result, this.generateExpression(expr.id, Precedence.Sequence, E_TTT));
            }
            if (expr.superClass) {
                fragment = join('extends', this.generateExpression(expr.superClass, Precedence.Unary, E_TTT));
                result = join(result, fragment);
            }
            result.push(space);
            result.push(this.generateStatement(expr.body, S_TFFT));
            return result;
        },

        MethodDefinition: function (expr, precedence, flags) {
            var result, fragment;
            if (expr['static']) {
                result = ['static' + space];
            } else {
                result = [];
            }
            if (expr.kind === 'get' || expr.kind === 'set') {
                fragment = [
                    join(expr.kind, this.generatePropertyKey(expr.key, expr.computed)),
                    this.generateFunctionBody(expr.value)
                ];
            } else {
                fragment = [
                    generateMethodPrefix(expr),
                    this.generatePropertyKey(expr.key, expr.computed),
                    this.generateFunctionBody(expr.value)
                ];
            }
            return join(result, fragment);
        },

        Property: function (expr, precedence, flags) {
            if (expr.kind === 'get' || expr.kind === 'set') {
                return [
                    expr.kind, noEmptySpace(),
                    this.generatePropertyKey(expr.key, expr.computed),
                    this.generateFunctionBody(expr.value)
                ];
            }

            if (expr.shorthand) {
                if (expr.value.type === "AssignmentPattern") {
                    return this.AssignmentPattern(expr.value, Precedence.Sequence, E_TTT);
                }
                return this.generatePropertyKey(expr.key, expr.computed);
            }

            if (expr.method) {
                return [
                    generateMethodPrefix(expr),
                    this.generatePropertyKey(expr.key, expr.computed),
                    this.generateFunctionBody(expr.value)
                ];
            }

            return [
                this.generatePropertyKey(expr.key, expr.computed),
                ':' + space,
                this.generateExpression(expr.value, Precedence.Assignment, E_TTT)
            ];
        },

        ObjectExpression: function (expr, precedence, flags) {
            var multiline, result, fragment, that = this;

            if (!expr.properties.length) {
                return '{}';
            }
            multiline = expr.properties.length > 1;

            withIndent(function () {
                fragment = that.generateExpression(expr.properties[0], Precedence.Sequence, E_TTT);
            });

            if (!multiline) {
                // issues 4
                // Do not transform from
                //   dejavu.Class.declare({
                //       method2: function () {}
                //   });
                // to
                //   dejavu.Class.declare({method2: function () {
                //       }});
                if (!hasLineTerminator(toSourceNodeWhenNeeded(fragment).toString())) {
                    return [ '{', space, fragment, space, '}' ];
                }
            }

            withIndent(function (indent) {
                var i, iz;
                result = [ '{', newline, indent, fragment ];

                if (multiline) {
                    result.push(',' + newline);
                    for (i = 1, iz = expr.properties.length; i < iz; ++i) {
                        result.push(indent);
                        result.push(that.generateExpression(expr.properties[i], Precedence.Sequence, E_TTT));
                        if (i + 1 < iz) {
                            result.push(',' + newline);
                        }
                    }
                }
            });

            if (!endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
                result.push(newline);
            }
            result.push(base);
            result.push('}');
            return result;
        },

        AssignmentPattern: function(expr, precedence, flags) {
            return this.generateAssignment(expr.left, expr.right, '=', precedence, flags);
        },

        ObjectPattern: function (expr, precedence, flags) {
            var result, i, iz, multiline, property, that = this;
            if (!expr.properties.length) {
                return '{}';
            }

            multiline = false;
            if (expr.properties.length === 1) {
                property = expr.properties[0];
                if (property.value.type !== Syntax.Identifier) {
                    multiline = true;
                }
            } else {
                for (i = 0, iz = expr.properties.length; i < iz; ++i) {
                    property = expr.properties[i];
                    if (!property.shorthand) {
                        multiline = true;
                        break;
                    }
                }
            }
            result = ['{', multiline ? newline : '' ];

            withIndent(function (indent) {
                var i, iz;
                for (i = 0, iz = expr.properties.length; i < iz; ++i) {
                    result.push(multiline ? indent : '');
                    result.push(that.generateExpression(expr.properties[i], Precedence.Sequence, E_TTT));
                    if (i + 1 < iz) {
                        result.push(',' + (multiline ? newline : space));
                    }
                }
            });

            if (multiline && !endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
                result.push(newline);
            }
            result.push(multiline ? base : '');
            result.push('}');
            return result;
        },

        ThisExpression: function (expr, precedence, flags) {
            return 'this';
        },

        Super: function (expr, precedence, flags) {
            return 'super';
        },

        Identifier: function (expr, precedence, flags) {
            return generateIdentifier(expr);
        },

        ImportDefaultSpecifier: function (expr, precedence, flags) {
            return generateIdentifier(expr.id || expr.local);
        },

        ImportNamespaceSpecifier: function (expr, precedence, flags) {
            var result = ['*'];
            var id = expr.id || expr.local;
            if (id) {
                result.push(space + 'as' + noEmptySpace() + generateIdentifier(id));
            }
            return result;
        },

        ImportSpecifier: function (expr, precedence, flags) {
            var imported = expr.imported;
            var result = [ imported.name ];
            var local = expr.local;
            if (local && local.name !== imported.name) {
                result.push(noEmptySpace() + 'as' + noEmptySpace() + generateIdentifier(local));
            }
            return result;
        },

        ExportSpecifier: function (expr, precedence, flags) {
            var local = expr.local;
            var result = [ local.name ];
            var exported = expr.exported;
            if (exported && exported.name !== local.name) {
                result.push(noEmptySpace() + 'as' + noEmptySpace() + generateIdentifier(exported));
            }
            return result;
        },

        Literal: function (expr, precedence, flags) {
            var raw;
            if (expr.hasOwnProperty('raw') && parse && extra.raw) {
                try {
                    raw = parse(expr.raw).body[0].expression;
                    if (raw.type === Syntax.Literal) {
                        if (raw.value === expr.value) {
                            return expr.raw;
                        }
                    }
                } catch (e) {
                    // not use raw property
                }
            }

            if (expr.regex) {
              return '/' + expr.regex.pattern + '/' + expr.regex.flags;
            }

            if (expr.value === null) {
                return 'null';
            }

            if (typeof expr.value === 'string') {
                return escapeString(expr.value);
            }

            if (typeof expr.value === 'number') {
                return generateNumber(expr.value);
            }

            if (typeof expr.value === 'boolean') {
                return expr.value ? 'true' : 'false';
            }

            return generateRegExp(expr.value);
        },

        GeneratorExpression: function (expr, precedence, flags) {
            return this.ComprehensionExpression(expr, precedence, flags);
        },

        ComprehensionExpression: function (expr, precedence, flags) {
            // GeneratorExpression should be parenthesized with (...), ComprehensionExpression with [...]
            // Due to https://bugzilla.mozilla.org/show_bug.cgi?id=883468 position of expr.body can differ in Spidermonkey and ES6

            var result, i, iz, fragment, that = this;
            result = (expr.type === Syntax.GeneratorExpression) ? ['('] : ['['];

            if (extra.moz.comprehensionExpressionStartsWithAssignment) {
                fragment = this.generateExpression(expr.body, Precedence.Assignment, E_TTT);
                result.push(fragment);
            }

            if (expr.blocks) {
                withIndent(function () {
                    for (i = 0, iz = expr.blocks.length; i < iz; ++i) {
                        fragment = that.generateExpression(expr.blocks[i], Precedence.Sequence, E_TTT);
                        if (i > 0 || extra.moz.comprehensionExpressionStartsWithAssignment) {
                            result = join(result, fragment);
                        } else {
                            result.push(fragment);
                        }
                    }
                });
            }

            if (expr.filter) {
                result = join(result, 'if' + space);
                fragment = this.generateExpression(expr.filter, Precedence.Sequence, E_TTT);
                result = join(result, [ '(', fragment, ')' ]);
            }

            if (!extra.moz.comprehensionExpressionStartsWithAssignment) {
                fragment = this.generateExpression(expr.body, Precedence.Assignment, E_TTT);

                result = join(result, fragment);
            }

            result.push((expr.type === Syntax.GeneratorExpression) ? ')' : ']');
            return result;
        },

        ComprehensionBlock: function (expr, precedence, flags) {
            var fragment;
            if (expr.left.type === Syntax.VariableDeclaration) {
                fragment = [
                    expr.left.kind, noEmptySpace(),
                    this.generateStatement(expr.left.declarations[0], S_FFFF)
                ];
            } else {
                fragment = this.generateExpression(expr.left, Precedence.Call, E_TTT);
            }

            fragment = join(fragment, expr.of ? 'of' : 'in');
            fragment = join(fragment, this.generateExpression(expr.right, Precedence.Sequence, E_TTT));

            return [ 'for' + space + '(', fragment, ')' ];
        },

        SpreadElement: function (expr, precedence, flags) {
            return [
                '...',
                this.generateExpression(expr.argument, Precedence.Assignment, E_TTT)
            ];
        },

        TaggedTemplateExpression: function (expr, precedence, flags) {
            var itemFlags = E_TTF;
            if (!(flags & F_ALLOW_CALL)) {
                itemFlags = E_TFF;
            }
            var result = [
                this.generateExpression(expr.tag, Precedence.Call, itemFlags),
                this.generateExpression(expr.quasi, Precedence.Primary, E_FFT)
            ];
            return parenthesize(result, Precedence.TaggedTemplate, precedence);
        },

        TemplateElement: function (expr, precedence, flags) {
            // Don't use "cooked". Since tagged template can use raw template
            // representation. So if we do so, it breaks the script semantics.
            return expr.value.raw;
        },

        TemplateLiteral: function (expr, precedence, flags) {
            var result, i, iz;
            result = [ '`' ];
            for (i = 0, iz = expr.quasis.length; i < iz; ++i) {
                result.push(this.generateExpression(expr.quasis[i], Precedence.Primary, E_TTT));
                if (i + 1 < iz) {
                    result.push('${' + space);
                    result.push(this.generateExpression(expr.expressions[i], Precedence.Sequence, E_TTT));
                    result.push(space + '}');
                }
            }
            result.push('`');
            return result;
        },

        ModuleSpecifier: function (expr, precedence, flags) {
            return this.Literal(expr, precedence, flags);
        },

        ImportExpression: function(expr, precedence, flag) {
            return parenthesize([
                'import(',
                this.generateExpression(expr.source, Precedence.Assignment, E_TTT),
                ')'
            ], Precedence.Call, precedence);
        },

    };

    merge(CodeGenerator.prototype, CodeGenerator.Expression);

    CodeGenerator.prototype.generateExpression = function (expr, precedence, flags) {
        var result, type;

        type = expr.type || Syntax.Property;

        if (extra.verbatim && expr.hasOwnProperty(extra.verbatim)) {
            return generateVerbatim(expr, precedence);
        }

        result = this[type](expr, precedence, flags);


        if (extra.comment) {
            result = addComments(expr, result);
        }
        return toSourceNodeWhenNeeded(result, expr);
    };

    CodeGenerator.prototype.generateStatement = function (stmt, flags) {
        var result,
            fragment;

        result = this[stmt.type](stmt, flags);

        // Attach comments

        if (extra.comment) {
            result = addComments(stmt, result);
        }

        fragment = toSourceNodeWhenNeeded(result).toString();
        if (stmt.type === Syntax.Program && !safeConcatenation && newline === '' &&  fragment.charAt(fragment.length - 1) === '\n') {
            result = sourceMap$1 ? toSourceNodeWhenNeeded(result).replaceRight(/\s+$/, '') : fragment.replace(/\s+$/, '');
        }

        return toSourceNodeWhenNeeded(result, stmt);
    };

    function generateInternal(node) {
        var codegen;

        codegen = new CodeGenerator();
        if (isStatement(node)) {
            return codegen.generateStatement(node, S_TFFF);
        }

        if (isExpression(node)) {
            return codegen.generateExpression(node, Precedence.Sequence, E_TTT);
        }

        throw new Error('Unknown node type: ' + node.type);
    }

    function generate(node, options) {
        var defaultOptions = getDefaultOptions(), result, pair;

        if (options != null) {
            // Obsolete options
            //
            //   `options.indent`
            //   `options.base`
            //
            // Instead of them, we can use `option.format.indent`.
            if (typeof options.indent === 'string') {
                defaultOptions.format.indent.style = options.indent;
            }
            if (typeof options.base === 'number') {
                defaultOptions.format.indent.base = options.base;
            }
            options = updateDeeply(defaultOptions, options);
            indent = options.format.indent.style;
            if (typeof options.base === 'string') {
                base = options.base;
            } else {
                base = stringRepeat(indent, options.format.indent.base);
            }
        } else {
            options = defaultOptions;
            indent = options.format.indent.style;
            base = stringRepeat(indent, options.format.indent.base);
        }
        json = options.format.json;
        renumber = options.format.renumber;
        hexadecimal = json ? false : options.format.hexadecimal;
        quotes = json ? 'double' : options.format.quotes;
        escapeless = options.format.escapeless;
        newline = options.format.newline;
        space = options.format.space;
        if (options.format.compact) {
            newline = space = indent = base = '';
        }
        parentheses = options.format.parentheses;
        semicolons = options.format.semicolons;
        safeConcatenation = options.format.safeConcatenation;
        directive = options.directive;
        parse = json ? null : options.parse;
        sourceMap$1 = options.sourceMap;
        sourceCode = options.sourceCode;
        preserveBlankLines = options.format.preserveBlankLines && sourceCode !== null;
        extra = options;

        if (sourceMap$1) {
            if (!exports.browser) {
                // We assume environment is node.js
                // And prevent from including source-map by browserify
                SourceNode = sourceMap.SourceNode;
            } else {
                SourceNode = commonjsGlobal.sourceMap.SourceNode;
            }
        }

        result = generateInternal(node);

        if (!sourceMap$1) {
            pair = {code: result.toString(), map: null};
            return options.sourceMapWithCode ? pair : pair.code;
        }


        pair = result.toStringWithSourceMap({
            file: options.file,
            sourceRoot: options.sourceMapRoot
        });

        if (options.sourceContent) {
            pair.map.setSourceContent(options.sourceMap,
                                      options.sourceContent);
        }

        if (options.sourceMapWithCode) {
            return pair;
        }

        return pair.map.toString();
    }

    FORMAT_MINIFY = {
        indent: {
            style: '',
            base: 0
        },
        renumber: true,
        hexadecimal: true,
        quotes: 'auto',
        escapeless: true,
        compact: true,
        parentheses: false,
        semicolons: false
    };

    FORMAT_DEFAULTS = getDefaultOptions().format;

    exports.version = require$$3.version;
    exports.generate = generate;
    exports.attachComments = estraverse$1.attachComments;
    exports.Precedence = updateDeeply({}, Precedence);
    exports.browser = false;
    exports.FORMAT_MINIFY = FORMAT_MINIFY;
    exports.FORMAT_DEFAULTS = FORMAT_DEFAULTS;
}());
/* vim: set sw=4 ts=4 et tw=80 : */
});

var esprima = createCommonjsModule(function (module, exports) {
(function webpackUniversalModuleDefinition(root, factory) {
/* istanbul ignore next */
	if('object' === 'object' && 'object' === 'object')
		module.exports = factory();
	else if(typeof undefined === 'function' && undefined.amd)
		undefined([], factory);
/* istanbul ignore next */
	else if('object' === 'object')
		exports["esprima"] = factory();
	else
		root["esprima"] = factory();
})(commonjsGlobal, function() {
return /******/ (function(modules) { // webpackBootstrap
/******/ 	// The module cache
/******/ 	var installedModules = {};

/******/ 	// The require function
/******/ 	function __webpack_require__(moduleId) {

/******/ 		// Check if module is in cache
/* istanbul ignore if */
/******/ 		if(installedModules[moduleId])
/******/ 			return installedModules[moduleId].exports;

/******/ 		// Create a new module (and put it into the cache)
/******/ 		var module = installedModules[moduleId] = {
/******/ 			exports: {},
/******/ 			id: moduleId,
/******/ 			loaded: false
/******/ 		};

/******/ 		// Execute the module function
/******/ 		modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);

/******/ 		// Flag the module as loaded
/******/ 		module.loaded = true;

/******/ 		// Return the exports of the module
/******/ 		return module.exports;
/******/ 	}


/******/ 	// expose the modules object (__webpack_modules__)
/******/ 	__webpack_require__.m = modules;

/******/ 	// expose the module cache
/******/ 	__webpack_require__.c = installedModules;

/******/ 	// __webpack_public_path__
/******/ 	__webpack_require__.p = "";

/******/ 	// Load entry module and return exports
/******/ 	return __webpack_require__(0);
/******/ })
/************************************************************************/
/******/ ([
/* 0 */
/***/ function(module, exports, __webpack_require__) {

	"use strict";
	/*
	  Copyright JS Foundation and other contributors, https://js.foundation/

	  Redistribution and use in source and binary forms, with or without
	  modification, are permitted provided that the following conditions are met:

	    * Redistributions of source code must retain the above copyright
	      notice, this list of conditions and the following disclaimer.
	    * Redistributions in binary form must reproduce the above copyright
	      notice, this list of conditions and the following disclaimer in the
	      documentation and/or other materials provided with the distribution.

	  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
	  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
	  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
	  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
	  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
	  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
	  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	*/
	Object.defineProperty(exports, "__esModule", { value: true });
	var comment_handler_1 = __webpack_require__(1);
	var jsx_parser_1 = __webpack_require__(3);
	var parser_1 = __webpack_require__(8);
	var tokenizer_1 = __webpack_require__(15);
	function parse(code, options, delegate) {
	    var commentHandler = null;
	    var proxyDelegate = function (node, metadata) {
	        if (delegate) {
	            delegate(node, metadata);
	        }
	        if (commentHandler) {
	            commentHandler.visit(node, metadata);
	        }
	    };
	    var parserDelegate = (typeof delegate === 'function') ? proxyDelegate : null;
	    var collectComment = false;
	    if (options) {
	        collectComment = (typeof options.comment === 'boolean' && options.comment);
	        var attachComment = (typeof options.attachComment === 'boolean' && options.attachComment);
	        if (collectComment || attachComment) {
	            commentHandler = new comment_handler_1.CommentHandler();
	            commentHandler.attach = attachComment;
	            options.comment = true;
	            parserDelegate = proxyDelegate;
	        }
	    }
	    var isModule = false;
	    if (options && typeof options.sourceType === 'string') {
	        isModule = (options.sourceType === 'module');
	    }
	    var parser;
	    if (options && typeof options.jsx === 'boolean' && options.jsx) {
	        parser = new jsx_parser_1.JSXParser(code, options, parserDelegate);
	    }
	    else {
	        parser = new parser_1.Parser(code, options, parserDelegate);
	    }
	    var program = isModule ? parser.parseModule() : parser.parseScript();
	    var ast = program;
	    if (collectComment && commentHandler) {
	        ast.comments = commentHandler.comments;
	    }
	    if (parser.config.tokens) {
	        ast.tokens = parser.tokens;
	    }
	    if (parser.config.tolerant) {
	        ast.errors = parser.errorHandler.errors;
	    }
	    return ast;
	}
	exports.parse = parse;
	function parseModule(code, options, delegate) {
	    var parsingOptions = options || {};
	    parsingOptions.sourceType = 'module';
	    return parse(code, parsingOptions, delegate);
	}
	exports.parseModule = parseModule;
	function parseScript(code, options, delegate) {
	    var parsingOptions = options || {};
	    parsingOptions.sourceType = 'script';
	    return parse(code, parsingOptions, delegate);
	}
	exports.parseScript = parseScript;
	function tokenize(code, options, delegate) {
	    var tokenizer = new tokenizer_1.Tokenizer(code, options);
	    var tokens;
	    tokens = [];
	    try {
	        while (true) {
	            var token = tokenizer.getNextToken();
	            if (!token) {
	                break;
	            }
	            if (delegate) {
	                token = delegate(token);
	            }
	            tokens.push(token);
	        }
	    }
	    catch (e) {
	        tokenizer.errorHandler.tolerate(e);
	    }
	    if (tokenizer.errorHandler.tolerant) {
	        tokens.errors = tokenizer.errors();
	    }
	    return tokens;
	}
	exports.tokenize = tokenize;
	var syntax_1 = __webpack_require__(2);
	exports.Syntax = syntax_1.Syntax;
	// Sync with *.json manifests.
	exports.version = '4.0.1';


/***/ },
/* 1 */
/***/ function(module, exports, __webpack_require__) {

	"use strict";
	Object.defineProperty(exports, "__esModule", { value: true });
	var syntax_1 = __webpack_require__(2);
	var CommentHandler = (function () {
	    function CommentHandler() {
	        this.attach = false;
	        this.comments = [];
	        this.stack = [];
	        this.leading = [];
	        this.trailing = [];
	    }
	    CommentHandler.prototype.insertInnerComments = function (node, metadata) {
	        //  innnerComments for properties empty block
	        //  `function a() {/** comments **\/}`
	        if (node.type === syntax_1.Syntax.BlockStatement && node.body.length === 0) {
	            var innerComments = [];
	            for (var i = this.leading.length - 1; i >= 0; --i) {
	                var entry = this.leading[i];
	                if (metadata.end.offset >= entry.start) {
	                    innerComments.unshift(entry.comment);
	                    this.leading.splice(i, 1);
	                    this.trailing.splice(i, 1);
	                }
	            }
	            if (innerComments.length) {
	                node.innerComments = innerComments;
	            }
	        }
	    };
	    CommentHandler.prototype.findTrailingComments = function (metadata) {
	        var trailingComments = [];
	        if (this.trailing.length > 0) {
	            for (var i = this.trailing.length - 1; i >= 0; --i) {
	                var entry_1 = this.trailing[i];
	                if (entry_1.start >= metadata.end.offset) {
	                    trailingComments.unshift(entry_1.comment);
	                }
	            }
	            this.trailing.length = 0;
	            return trailingComments;
	        }
	        var entry = this.stack[this.stack.length - 1];
	        if (entry && entry.node.trailingComments) {
	            var firstComment = entry.node.trailingComments[0];
	            if (firstComment && firstComment.range[0] >= metadata.end.offset) {
	                trailingComments = entry.node.trailingComments;
	                delete entry.node.trailingComments;
	            }
	        }
	        return trailingComments;
	    };
	    CommentHandler.prototype.findLeadingComments = function (metadata) {
	        var leadingComments = [];
	        var target;
	        while (this.stack.length > 0) {
	            var entry = this.stack[this.stack.length - 1];
	            if (entry && entry.start >= metadata.start.offset) {
	                target = entry.node;
	                this.stack.pop();
	            }
	            else {
	                break;
	            }
	        }
	        if (target) {
	            var count = target.leadingComments ? target.leadingComments.length : 0;
	            for (var i = count - 1; i >= 0; --i) {
	                var comment = target.leadingComments[i];
	                if (comment.range[1] <= metadata.start.offset) {
	                    leadingComments.unshift(comment);
	                    target.leadingComments.splice(i, 1);
	                }
	            }
	            if (target.leadingComments && target.leadingComments.length === 0) {
	                delete target.leadingComments;
	            }
	            return leadingComments;
	        }
	        for (var i = this.leading.length - 1; i >= 0; --i) {
	            var entry = this.leading[i];
	            if (entry.start <= metadata.start.offset) {
	                leadingComments.unshift(entry.comment);
	                this.leading.splice(i, 1);
	            }
	        }
	        return leadingComments;
	    };
	    CommentHandler.prototype.visitNode = function (node, metadata) {
	        if (node.type === syntax_1.Syntax.Program && node.body.length > 0) {
	            return;
	        }
	        this.insertInnerComments(node, metadata);
	        var trailingComments = this.findTrailingComments(metadata);
	        var leadingComments = this.findLeadingComments(metadata);
	        if (leadingComments.length > 0) {
	            node.leadingComments = leadingComments;
	        }
	        if (trailingComments.length > 0) {
	            node.trailingComments = trailingComments;
	        }
	        this.stack.push({
	            node: node,
	            start: metadata.start.offset
	        });
	    };
	    CommentHandler.prototype.visitComment = function (node, metadata) {
	        var type = (node.type[0] === 'L') ? 'Line' : 'Block';
	        var comment = {
	            type: type,
	            value: node.value
	        };
	        if (node.range) {
	            comment.range = node.range;
	        }
	        if (node.loc) {
	            comment.loc = node.loc;
	        }
	        this.comments.push(comment);
	        if (this.attach) {
	            var entry = {
	                comment: {
	                    type: type,
	                    value: node.value,
	                    range: [metadata.start.offset, metadata.end.offset]
	                },
	                start: metadata.start.offset
	            };
	            if (node.loc) {
	                entry.comment.loc = node.loc;
	            }
	            node.type = type;
	            this.leading.push(entry);
	            this.trailing.push(entry);
	        }
	    };
	    CommentHandler.prototype.visit = function (node, metadata) {
	        if (node.type === 'LineComment') {
	            this.visitComment(node, metadata);
	        }
	        else if (node.type === 'BlockComment') {
	            this.visitComment(node, metadata);
	        }
	        else if (this.attach) {
	            this.visitNode(node, metadata);
	        }
	    };
	    return CommentHandler;
	}());
	exports.CommentHandler = CommentHandler;


/***/ },
/* 2 */
/***/ function(module, exports) {

	"use strict";
	Object.defineProperty(exports, "__esModule", { value: true });
	exports.Syntax = {
	    AssignmentExpression: 'AssignmentExpression',
	    AssignmentPattern: 'AssignmentPattern',
	    ArrayExpression: 'ArrayExpression',
	    ArrayPattern: 'ArrayPattern',
	    ArrowFunctionExpression: 'ArrowFunctionExpression',
	    AwaitExpression: 'AwaitExpression',
	    BlockStatement: 'BlockStatement',
	    BinaryExpression: 'BinaryExpression',
	    BreakStatement: 'BreakStatement',
	    CallExpression: 'CallExpression',
	    CatchClause: 'CatchClause',
	    ClassBody: 'ClassBody',
	    ClassDeclaration: 'ClassDeclaration',
	    ClassExpression: 'ClassExpression',
	    ConditionalExpression: 'ConditionalExpression',
	    ContinueStatement: 'ContinueStatement',
	    DoWhileStatement: 'DoWhileStatement',
	    DebuggerStatement: 'DebuggerStatement',
	    EmptyStatement: 'EmptyStatement',
	    ExportAllDeclaration: 'ExportAllDeclaration',
	    ExportDefaultDeclaration: 'ExportDefaultDeclaration',
	    ExportNamedDeclaration: 'ExportNamedDeclaration',
	    ExportSpecifier: 'ExportSpecifier',
	    ExpressionStatement: 'ExpressionStatement',
	    ForStatement: 'ForStatement',
	    ForOfStatement: 'ForOfStatement',
	    ForInStatement: 'ForInStatement',
	    FunctionDeclaration: 'FunctionDeclaration',
	    FunctionExpression: 'FunctionExpression',
	    Identifier: 'Identifier',
	    IfStatement: 'IfStatement',
	    ImportDeclaration: 'ImportDeclaration',
	    ImportDefaultSpecifier: 'ImportDefaultSpecifier',
	    ImportNamespaceSpecifier: 'ImportNamespaceSpecifier',
	    ImportSpecifier: 'ImportSpecifier',
	    Literal: 'Literal',
	    LabeledStatement: 'LabeledStatement',
	    LogicalExpression: 'LogicalExpression',
	    MemberExpression: 'MemberExpression',
	    MetaProperty: 'MetaProperty',
	    MethodDefinition: 'MethodDefinition',
	    NewExpression: 'NewExpression',
	    ObjectExpression: 'ObjectExpression',
	    ObjectPattern: 'ObjectPattern',
	    Program: 'Program',
	    Property: 'Property',
	    RestElement: 'RestElement',
	    ReturnStatement: 'ReturnStatement',
	    SequenceExpression: 'SequenceExpression',
	    SpreadElement: 'SpreadElement',
	    Super: 'Super',
	    SwitchCase: 'SwitchCase',
	    SwitchStatement: 'SwitchStatement',
	    TaggedTemplateExpression: 'TaggedTemplateExpression',
	    TemplateElement: 'TemplateElement',
	    TemplateLiteral: 'TemplateLiteral',
	    ThisExpression: 'ThisExpression',
	    ThrowStatement: 'ThrowStatement',
	    TryStatement: 'TryStatement',
	    UnaryExpression: 'UnaryExpression',
	    UpdateExpression: 'UpdateExpression',
	    VariableDeclaration: 'VariableDeclaration',
	    VariableDeclarator: 'VariableDeclarator',
	    WhileStatement: 'WhileStatement',
	    WithStatement: 'WithStatement',
	    YieldExpression: 'YieldExpression'
	};


/***/ },
/* 3 */
/***/ function(module, exports, __webpack_require__) {

	"use strict";
/* istanbul ignore next */
	var __extends = (this && this.__extends) || (function () {
	    var extendStatics = Object.setPrototypeOf ||
	        ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
	        function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
	    return function (d, b) {
	        extendStatics(d, b);
	        function __() { this.constructor = d; }
	        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
	    };
	})();
	Object.defineProperty(exports, "__esModule", { value: true });
	var character_1 = __webpack_require__(4);
	var JSXNode = __webpack_require__(5);
	var jsx_syntax_1 = __webpack_require__(6);
	var Node = __webpack_require__(7);
	var parser_1 = __webpack_require__(8);
	var token_1 = __webpack_require__(13);
	var xhtml_entities_1 = __webpack_require__(14);
	token_1.TokenName[100 /* Identifier */] = 'JSXIdentifier';
	token_1.TokenName[101 /* Text */] = 'JSXText';
	// Fully qualified element name, e.g. <svg:path> returns "svg:path"
	function getQualifiedElementName(elementName) {
	    var qualifiedName;
	    switch (elementName.type) {
	        case jsx_syntax_1.JSXSyntax.JSXIdentifier:
	            var id = elementName;
	            qualifiedName = id.name;
	            break;
	        case jsx_syntax_1.JSXSyntax.JSXNamespacedName:
	            var ns = elementName;
	            qualifiedName = getQualifiedElementName(ns.namespace) + ':' +
	                getQualifiedElementName(ns.name);
	            break;
	        case jsx_syntax_1.JSXSyntax.JSXMemberExpression:
	            var expr = elementName;
	            qualifiedName = getQualifiedElementName(expr.object) + '.' +
	                getQualifiedElementName(expr.property);
	            break;
	        /* istanbul ignore next */
	        default:
	            break;
	    }
	    return qualifiedName;
	}
	var JSXParser = (function (_super) {
	    __extends(JSXParser, _super);
	    function JSXParser(code, options, delegate) {
	        return _super.call(this, code, options, delegate) || this;
	    }
	    JSXParser.prototype.parsePrimaryExpression = function () {
	        return this.match('<') ? this.parseJSXRoot() : _super.prototype.parsePrimaryExpression.call(this);
	    };
	    JSXParser.prototype.startJSX = function () {
	        // Unwind the scanner before the lookahead token.
	        this.scanner.index = this.startMarker.index;
	        this.scanner.lineNumber = this.startMarker.line;
	        this.scanner.lineStart = this.startMarker.index - this.startMarker.column;
	    };
	    JSXParser.prototype.finishJSX = function () {
	        // Prime the next lookahead.
	        this.nextToken();
	    };
	    JSXParser.prototype.reenterJSX = function () {
	        this.startJSX();
	        this.expectJSX('}');
	        // Pop the closing '}' added from the lookahead.
	        if (this.config.tokens) {
	            this.tokens.pop();
	        }
	    };
	    JSXParser.prototype.createJSXNode = function () {
	        this.collectComments();
	        return {
	            index: this.scanner.index,
	            line: this.scanner.lineNumber,
	            column: this.scanner.index - this.scanner.lineStart
	        };
	    };
	    JSXParser.prototype.createJSXChildNode = function () {
	        return {
	            index: this.scanner.index,
	            line: this.scanner.lineNumber,
	            column: this.scanner.index - this.scanner.lineStart
	        };
	    };
	    JSXParser.prototype.scanXHTMLEntity = function (quote) {
	        var result = '&';
	        var valid = true;
	        var terminated = false;
	        var numeric = false;
	        var hex = false;
	        while (!this.scanner.eof() && valid && !terminated) {
	            var ch = this.scanner.source[this.scanner.index];
	            if (ch === quote) {
	                break;
	            }
	            terminated = (ch === ';');
	            result += ch;
	            ++this.scanner.index;
	            if (!terminated) {
	                switch (result.length) {
	                    case 2:
	                        // e.g. '&#123;'
	                        numeric = (ch === '#');
	                        break;
	                    case 3:
	                        if (numeric) {
	                            // e.g. '&#x41;'
	                            hex = (ch === 'x');
	                            valid = hex || character_1.Character.isDecimalDigit(ch.charCodeAt(0));
	                            numeric = numeric && !hex;
	                        }
	                        break;
	                    default:
	                        valid = valid && !(numeric && !character_1.Character.isDecimalDigit(ch.charCodeAt(0)));
	                        valid = valid && !(hex && !character_1.Character.isHexDigit(ch.charCodeAt(0)));
	                        break;
	                }
	            }
	        }
	        if (valid && terminated && result.length > 2) {
	            // e.g. '&#x41;' becomes just '#x41'
	            var str = result.substr(1, result.length - 2);
	            if (numeric && str.length > 1) {
	                result = String.fromCharCode(parseInt(str.substr(1), 10));
	            }
	            else if (hex && str.length > 2) {
	                result = String.fromCharCode(parseInt('0' + str.substr(1), 16));
	            }
	            else if (!numeric && !hex && xhtml_entities_1.XHTMLEntities[str]) {
	                result = xhtml_entities_1.XHTMLEntities[str];
	            }
	        }
	        return result;
	    };
	    // Scan the next JSX token. This replaces Scanner#lex when in JSX mode.
	    JSXParser.prototype.lexJSX = function () {
	        var cp = this.scanner.source.charCodeAt(this.scanner.index);
	        // < > / : = { }
	        if (cp === 60 || cp === 62 || cp === 47 || cp === 58 || cp === 61 || cp === 123 || cp === 125) {
	            var value = this.scanner.source[this.scanner.index++];
	            return {
	                type: 7 /* Punctuator */,
	                value: value,
	                lineNumber: this.scanner.lineNumber,
	                lineStart: this.scanner.lineStart,
	                start: this.scanner.index - 1,
	                end: this.scanner.index
	            };
	        }
	        // " '
	        if (cp === 34 || cp === 39) {
	            var start = this.scanner.index;
	            var quote = this.scanner.source[this.scanner.index++];
	            var str = '';
	            while (!this.scanner.eof()) {
	                var ch = this.scanner.source[this.scanner.index++];
	                if (ch === quote) {
	                    break;
	                }
	                else if (ch === '&') {
	                    str += this.scanXHTMLEntity(quote);
	                }
	                else {
	                    str += ch;
	                }
	            }
	            return {
	                type: 8 /* StringLiteral */,
	                value: str,
	                lineNumber: this.scanner.lineNumber,
	                lineStart: this.scanner.lineStart,
	                start: start,
	                end: this.scanner.index
	            };
	        }
	        // ... or .
	        if (cp === 46) {
	            var n1 = this.scanner.source.charCodeAt(this.scanner.index + 1);
	            var n2 = this.scanner.source.charCodeAt(this.scanner.index + 2);
	            var value = (n1 === 46 && n2 === 46) ? '...' : '.';
	            var start = this.scanner.index;
	            this.scanner.index += value.length;
	            return {
	                type: 7 /* Punctuator */,
	                value: value,
	                lineNumber: this.scanner.lineNumber,
	                lineStart: this.scanner.lineStart,
	                start: start,
	                end: this.scanner.index
	            };
	        }
	        // `
	        if (cp === 96) {
	            // Only placeholder, since it will be rescanned as a real assignment expression.
	            return {
	                type: 10 /* Template */,
	                value: '',
	                lineNumber: this.scanner.lineNumber,
	                lineStart: this.scanner.lineStart,
	                start: this.scanner.index,
	                end: this.scanner.index
	            };
	        }
	        // Identifer can not contain backslash (char code 92).
	        if (character_1.Character.isIdentifierStart(cp) && (cp !== 92)) {
	            var start = this.scanner.index;
	            ++this.scanner.index;
	            while (!this.scanner.eof()) {
	                var ch = this.scanner.source.charCodeAt(this.scanner.index);
	                if (character_1.Character.isIdentifierPart(ch) && (ch !== 92)) {
	                    ++this.scanner.index;
	                }
	                else if (ch === 45) {
	                    // Hyphen (char code 45) can be part of an identifier.
	                    ++this.scanner.index;
	                }
	                else {
	                    break;
	                }
	            }
	            var id = this.scanner.source.slice(start, this.scanner.index);
	            return {
	                type: 100 /* Identifier */,
	                value: id,
	                lineNumber: this.scanner.lineNumber,
	                lineStart: this.scanner.lineStart,
	                start: start,
	                end: this.scanner.index
	            };
	        }
	        return this.scanner.lex();
	    };
	    JSXParser.prototype.nextJSXToken = function () {
	        this.collectComments();
	        this.startMarker.index = this.scanner.index;
	        this.startMarker.line = this.scanner.lineNumber;
	        this.startMarker.column = this.scanner.index - this.scanner.lineStart;
	        var token = this.lexJSX();
	        this.lastMarker.index = this.scanner.index;
	        this.lastMarker.line = this.scanner.lineNumber;
	        this.lastMarker.column = this.scanner.index - this.scanner.lineStart;
	        if (this.config.tokens) {
	            this.tokens.push(this.convertToken(token));
	        }
	        return token;
	    };
	    JSXParser.prototype.nextJSXText = function () {
	        this.startMarker.index = this.scanner.index;
	        this.startMarker.line = this.scanner.lineNumber;
	        this.startMarker.column = this.scanner.index - this.scanner.lineStart;
	        var start = this.scanner.index;
	        var text = '';
	        while (!this.scanner.eof()) {
	            var ch = this.scanner.source[this.scanner.index];
	            if (ch === '{' || ch === '<') {
	                break;
	            }
	            ++this.scanner.index;
	            text += ch;
	            if (character_1.Character.isLineTerminator(ch.charCodeAt(0))) {
	                ++this.scanner.lineNumber;
	                if (ch === '\r' && this.scanner.source[this.scanner.index] === '\n') {
	                    ++this.scanner.index;
	                }
	                this.scanner.lineStart = this.scanner.index;
	            }
	        }
	        this.lastMarker.index = this.scanner.index;
	        this.lastMarker.line = this.scanner.lineNumber;
	        this.lastMarker.column = this.scanner.index - this.scanner.lineStart;
	        var token = {
	            type: 101 /* Text */,
	            value: text,
	            lineNumber: this.scanner.lineNumber,
	            lineStart: this.scanner.lineStart,
	            start: start,
	            end: this.scanner.index
	        };
	        if ((text.length > 0) && this.config.tokens) {
	            this.tokens.push(this.convertToken(token));
	        }
	        return token;
	    };
	    JSXParser.prototype.peekJSXToken = function () {
	        var state = this.scanner.saveState();
	        this.scanner.scanComments();
	        var next = this.lexJSX();
	        this.scanner.restoreState(state);
	        return next;
	    };
	    // Expect the next JSX token to match the specified punctuator.
	    // If not, an exception will be thrown.
	    JSXParser.prototype.expectJSX = function (value) {
	        var token = this.nextJSXToken();
	        if (token.type !== 7 /* Punctuator */ || token.value !== value) {
	            this.throwUnexpectedToken(token);
	        }
	    };
	    // Return true if the next JSX token matches the specified punctuator.
	    JSXParser.prototype.matchJSX = function (value) {
	        var next = this.peekJSXToken();
	        return next.type === 7 /* Punctuator */ && next.value === value;
	    };
	    JSXParser.prototype.parseJSXIdentifier = function () {
	        var node = this.createJSXNode();
	        var token = this.nextJSXToken();
	        if (token.type !== 100 /* Identifier */) {
	            this.throwUnexpectedToken(token);
	        }
	        return this.finalize(node, new JSXNode.JSXIdentifier(token.value));
	    };
	    JSXParser.prototype.parseJSXElementName = function () {
	        var node = this.createJSXNode();
	        var elementName = this.parseJSXIdentifier();
	        if (this.matchJSX(':')) {
	            var namespace = elementName;
	            this.expectJSX(':');
	            var name_1 = this.parseJSXIdentifier();
	            elementName = this.finalize(node, new JSXNode.JSXNamespacedName(namespace, name_1));
	        }
	        else if (this.matchJSX('.')) {
	            while (this.matchJSX('.')) {
	                var object = elementName;
	                this.expectJSX('.');
	                var property = this.parseJSXIdentifier();
	                elementName = this.finalize(node, new JSXNode.JSXMemberExpression(object, property));
	            }
	        }
	        return elementName;
	    };
	    JSXParser.prototype.parseJSXAttributeName = function () {
	        var node = this.createJSXNode();
	        var attributeName;
	        var identifier = this.parseJSXIdentifier();
	        if (this.matchJSX(':')) {
	            var namespace = identifier;
	            this.expectJSX(':');
	            var name_2 = this.parseJSXIdentifier();
	            attributeName = this.finalize(node, new JSXNode.JSXNamespacedName(namespace, name_2));
	        }
	        else {
	            attributeName = identifier;
	        }
	        return attributeName;
	    };
	    JSXParser.prototype.parseJSXStringLiteralAttribute = function () {
	        var node = this.createJSXNode();
	        var token = this.nextJSXToken();
	        if (token.type !== 8 /* StringLiteral */) {
	            this.throwUnexpectedToken(token);
	        }
	        var raw = this.getTokenRaw(token);
	        return this.finalize(node, new Node.Literal(token.value, raw));
	    };
	    JSXParser.prototype.parseJSXExpressionAttribute = function () {
	        var node = this.createJSXNode();
	        this.expectJSX('{');
	        this.finishJSX();
	        if (this.match('}')) {
	            this.tolerateError('JSX attributes must only be assigned a non-empty expression');
	        }
	        var expression = this.parseAssignmentExpression();
	        this.reenterJSX();
	        return this.finalize(node, new JSXNode.JSXExpressionContainer(expression));
	    };
	    JSXParser.prototype.parseJSXAttributeValue = function () {
	        return this.matchJSX('{') ? this.parseJSXExpressionAttribute() :
	            this.matchJSX('<') ? this.parseJSXElement() : this.parseJSXStringLiteralAttribute();
	    };
	    JSXParser.prototype.parseJSXNameValueAttribute = function () {
	        var node = this.createJSXNode();
	        var name = this.parseJSXAttributeName();
	        var value = null;
	        if (this.matchJSX('=')) {
	            this.expectJSX('=');
	            value = this.parseJSXAttributeValue();
	        }
	        return this.finalize(node, new JSXNode.JSXAttribute(name, value));
	    };
	    JSXParser.prototype.parseJSXSpreadAttribute = function () {
	        var node = this.createJSXNode();
	        this.expectJSX('{');
	        this.expectJSX('...');
	        this.finishJSX();
	        var argument = this.parseAssignmentExpression();
	        this.reenterJSX();
	        return this.finalize(node, new JSXNode.JSXSpreadAttribute(argument));
	    };
	    JSXParser.prototype.parseJSXAttributes = function () {
	        var attributes = [];
	        while (!this.matchJSX('/') && !this.matchJSX('>')) {
	            var attribute = this.matchJSX('{') ? this.parseJSXSpreadAttribute() :
	                this.parseJSXNameValueAttribute();
	            attributes.push(attribute);
	        }
	        return attributes;
	    };
	    JSXParser.prototype.parseJSXOpeningElement = function () {
	        var node = this.createJSXNode();
	        this.expectJSX('<');
	        var name = this.parseJSXElementName();
	        var attributes = this.parseJSXAttributes();
	        var selfClosing = this.matchJSX('/');
	        if (selfClosing) {
	            this.expectJSX('/');
	        }
	        this.expectJSX('>');
	        return this.finalize(node, new JSXNode.JSXOpeningElement(name, selfClosing, attributes));
	    };
	    JSXParser.prototype.parseJSXBoundaryElement = function () {
	        var node = this.createJSXNode();
	        this.expectJSX('<');
	        if (this.matchJSX('/')) {
	            this.expectJSX('/');
	            var name_3 = this.parseJSXElementName();
	            this.expectJSX('>');
	            return this.finalize(node, new JSXNode.JSXClosingElement(name_3));
	        }
	        var name = this.parseJSXElementName();
	        var attributes = this.parseJSXAttributes();
	        var selfClosing = this.matchJSX('/');
	        if (selfClosing) {
	            this.expectJSX('/');
	        }
	        this.expectJSX('>');
	        return this.finalize(node, new JSXNode.JSXOpeningElement(name, selfClosing, attributes));
	    };
	    JSXParser.prototype.parseJSXEmptyExpression = function () {
	        var node = this.createJSXChildNode();
	        this.collectComments();
	        this.lastMarker.index = this.scanner.index;
	        this.lastMarker.line = this.scanner.lineNumber;
	        this.lastMarker.column = this.scanner.index - this.scanner.lineStart;
	        return this.finalize(node, new JSXNode.JSXEmptyExpression());
	    };
	    JSXParser.prototype.parseJSXExpressionContainer = function () {
	        var node = this.createJSXNode();
	        this.expectJSX('{');
	        var expression;
	        if (this.matchJSX('}')) {
	            expression = this.parseJSXEmptyExpression();
	            this.expectJSX('}');
	        }
	        else {
	            this.finishJSX();
	            expression = this.parseAssignmentExpression();
	            this.reenterJSX();
	        }
	        return this.finalize(node, new JSXNode.JSXExpressionContainer(expression));
	    };
	    JSXParser.prototype.parseJSXChildren = function () {
	        var children = [];
	        while (!this.scanner.eof()) {
	            var node = this.createJSXChildNode();
	            var token = this.nextJSXText();
	            if (token.start < token.end) {
	                var raw = this.getTokenRaw(token);
	                var child = this.finalize(node, new JSXNode.JSXText(token.value, raw));
	                children.push(child);
	            }
	            if (this.scanner.source[this.scanner.index] === '{') {
	                var container = this.parseJSXExpressionContainer();
	                children.push(container);
	            }
	            else {
	                break;
	            }
	        }
	        return children;
	    };
	    JSXParser.prototype.parseComplexJSXElement = function (el) {
	        var stack = [];
	        while (!this.scanner.eof()) {
	            el.children = el.children.concat(this.parseJSXChildren());
	            var node = this.createJSXChildNode();
	            var element = this.parseJSXBoundaryElement();
	            if (element.type === jsx_syntax_1.JSXSyntax.JSXOpeningElement) {
	                var opening = element;
	                if (opening.selfClosing) {
	                    var child = this.finalize(node, new JSXNode.JSXElement(opening, [], null));
	                    el.children.push(child);
	                }
	                else {
	                    stack.push(el);
	                    el = { node: node, opening: opening, closing: null, children: [] };
	                }
	            }
	            if (element.type === jsx_syntax_1.JSXSyntax.JSXClosingElement) {
	                el.closing = element;
	                var open_1 = getQualifiedElementName(el.opening.name);
	                var close_1 = getQualifiedElementName(el.closing.name);
	                if (open_1 !== close_1) {
	                    this.tolerateError('Expected corresponding JSX closing tag for %0', open_1);
	                }
	                if (stack.length > 0) {
	                    var child = this.finalize(el.node, new JSXNode.JSXElement(el.opening, el.children, el.closing));
	                    el = stack[stack.length - 1];
	                    el.children.push(child);
	                    stack.pop();
	                }
	                else {
	                    break;
	                }
	            }
	        }
	        return el;
	    };
	    JSXParser.prototype.parseJSXElement = function () {
	        var node = this.createJSXNode();
	        var opening = this.parseJSXOpeningElement();
	        var children = [];
	        var closing = null;
	        if (!opening.selfClosing) {
	            var el = this.parseComplexJSXElement({ node: node, opening: opening, closing: closing, children: children });
	            children = el.children;
	            closing = el.closing;
	        }
	        return this.finalize(node, new JSXNode.JSXElement(opening, children, closing));
	    };
	    JSXParser.prototype.parseJSXRoot = function () {
	        // Pop the opening '<' added from the lookahead.
	        if (this.config.tokens) {
	            this.tokens.pop();
	        }
	        this.startJSX();
	        var element = this.parseJSXElement();
	        this.finishJSX();
	        return element;
	    };
	    JSXParser.prototype.isStartOfExpression = function () {
	        return _super.prototype.isStartOfExpression.call(this) || this.match('<');
	    };
	    return JSXParser;
	}(parser_1.Parser));
	exports.JSXParser = JSXParser;


/***/ },
/* 4 */
/***/ function(module, exports) {

	"use strict";
	Object.defineProperty(exports, "__esModule", { value: true });
	// See also tools/generate-unicode-regex.js.
	var Regex = {
	    // Unicode v8.0.0 NonAsciiIdentifierStart:
	    NonAsciiIdentifierStart: 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	    // Unicode v8.0.0 NonAsciiIdentifierPart:
	    NonAsciiIdentifierPart: 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-\uFFCF\uFFD2-\uFFD7\uFFDA-\uFFDC]|\uD800[\uDC00-\uDC0B\uDC0D-\uDC26\uDC28-\uDC3A\uDC3C\uDC3D\uDC3F-\uDC4D\uDC50-\uDC5D\uDC80-\uDCFA\uDD40-\uDD74\uDDFD\uDE80-\uDE9C\uDEA0-\uDED0\uDEE0\uDF00-\uDF1F\uDF30-\uDF4A\uDF50-\uDF7A\uDF80-\uDF9D\uDFA0-\uDFC3\uDFC8-\uDFCF\uDFD1-\uDFD5]|\uD801[\uDC00-\uDC9D\uDCA0-\uDCA9\uDD00-\uDD27\uDD30-\uDD63\uDE00-\uDF36\uDF40-\uDF55\uDF60-\uDF67]|\uD802[\uDC00-\uDC05\uDC08\uDC0A-\uDC35\uDC37\uDC38\uDC3C\uDC3F-\uDC55\uDC60-\uDC76\uDC80-\uDC9E\uDCE0-\uDCF2\uDCF4\uDCF5\uDD00-\uDD15\uDD20-\uDD39\uDD80-\uDDB7\uDDBE\uDDBF\uDE00-\uDE03\uDE05\uDE06\uDE0C-\uDE13\uDE15-\uDE17\uDE19-\uDE33\uDE38-\uDE3A\uDE3F\uDE60-\uDE7C\uDE80-\uDE9C\uDEC0-\uDEC7\uDEC9-\uDEE6\uDF00-\uDF35\uDF40-\uDF55\uDF60-\uDF72\uDF80-\uDF91]|\uD803[\uDC00-\uDC48\uDC80-\uDCB2\uDCC0-\uDCF2]|\uD804[\uDC00-\uDC46\uDC66-\uDC6F\uDC7F-\uDCBA\uDCD0-\uDCE8\uDCF0-\uDCF9\uDD00-\uDD34\uDD36-\uDD3F\uDD50-\uDD73\uDD76\uDD80-\uDDC4\uDDCA-\uDDCC\uDDD0-\uDDDA\uDDDC\uDE00-\uDE11\uDE13-\uDE37\uDE80-\uDE86\uDE88\uDE8A-\uDE8D\uDE8F-\uDE9D\uDE9F-\uDEA8\uDEB0-\uDEEA\uDEF0-\uDEF9\uDF00-\uDF03\uDF05-\uDF0C\uDF0F\uDF10\uDF13-\uDF28\uDF2A-\uDF30\uDF32\uDF33\uDF35-\uDF39\uDF3C-\uDF44\uDF47\uDF48\uDF4B-\uDF4D\uDF50\uDF57\uDF5D-\uDF63\uDF66-\uDF6C\uDF70-\uDF74]|\uD805[\uDC80-\uDCC5\uDCC7\uDCD0-\uDCD9\uDD80-\uDDB5\uDDB8-\uDDC0\uDDD8-\uDDDD\uDE00-\uDE40\uDE44\uDE50-\uDE59\uDE80-\uDEB7\uDEC0-\uDEC9\uDF00-\uDF19\uDF1D-\uDF2B\uDF30-\uDF39]|\uD806[\uDCA0-\uDCE9\uDCFF\uDEC0-\uDEF8]|\uD808[\uDC00-\uDF99]|\uD809[\uDC00-\uDC6E\uDC80-\uDD43]|[\uD80C\uD840-\uD868\uD86A-\uD86C\uD86F-\uD872][\uDC00-\uDFFF]|\uD80D[\uDC00-\uDC2E]|\uD811[\uDC00-\uDE46]|\uD81A[\uDC00-\uDE38\uDE40-\uDE5E\uDE60-\uDE69\uDED0-\uDEED\uDEF0-\uDEF4\uDF00-\uDF36\uDF40-\uDF43\uDF50-\uDF59\uDF63-\uDF77\uDF7D-\uDF8F]|\uD81B[\uDF00-\uDF44\uDF50-\uDF7E\uDF8F-\uDF9F]|\uD82C[\uDC00\uDC01]|\uD82F[\uDC00-\uDC6A\uDC70-\uDC7C\uDC80-\uDC88\uDC90-\uDC99\uDC9D\uDC9E]|\uD834[\uDD65-\uDD69\uDD6D-\uDD72\uDD7B-\uDD82\uDD85-\uDD8B\uDDAA-\uDDAD\uDE42-\uDE44]|\uD835[\uDC00-\uDC54\uDC56-\uDC9C\uDC9E\uDC9F\uDCA2\uDCA5\uDCA6\uDCA9-\uDCAC\uDCAE-\uDCB9\uDCBB\uDCBD-\uDCC3\uDCC5-\uDD05\uDD07-\uDD0A\uDD0D-\uDD14\uDD16-\uDD1C\uDD1E-\uDD39\uDD3B-\uDD3E\uDD40-\uDD44\uDD46\uDD4A-\uDD50\uDD52-\uDEA5\uDEA8-\uDEC0\uDEC2-\uDEDA\uDEDC-\uDEFA\uDEFC-\uDF14\uDF16-\uDF34\uDF36-\uDF4E\uDF50-\uDF6E\uDF70-\uDF88\uDF8A-\uDFA8\uDFAA-\uDFC2\uDFC4-\uDFCB\uDFCE-\uDFFF]|\uD836[\uDE00-\uDE36\uDE3B-\uDE6C\uDE75\uDE84\uDE9B-\uDE9F\uDEA1-\uDEAF]|\uD83A[\uDC00-\uDCC4\uDCD0-\uDCD6]|\uD83B[\uDE00-\uDE03\uDE05-\uDE1F\uDE21\uDE22\uDE24\uDE27\uDE29-\uDE32\uDE34-\uDE37\uDE39\uDE3B\uDE42\uDE47\uDE49\uDE4B\uDE4D-\uDE4F\uDE51\uDE52\uDE54\uDE57\uDE59\uDE5B\uDE5D\uDE5F\uDE61\uDE62\uDE64\uDE67-\uDE6A\uDE6C-\uDE72\uDE74-\uDE77\uDE79-\uDE7C\uDE7E\uDE80-\uDE89\uDE8B-\uDE9B\uDEA1-\uDEA3\uDEA5-\uDEA9\uDEAB-\uDEBB]|\uD869[\uDC00-\uDED6\uDF00-\uDFFF]|\uD86D[\uDC00-\uDF34\uDF40-\uDFFF]|\uD86E[\uDC00-\uDC1D\uDC20-\uDFFF]|\uD873[\uDC00-\uDEA1]|\uD87E[\uDC00-\uDE1D]|\uDB40[\uDD00-\uDDEF]/
	};
	exports.Character = {
	    /* tslint:disable:no-bitwise */
	    fromCodePoint: function (cp) {
	        return (cp < 0x10000) ? String.fromCharCode(cp) :
	            String.fromCharCode(0xD800 + ((cp - 0x10000) >> 10)) +
	                String.fromCharCode(0xDC00 + ((cp - 0x10000) & 1023));
	    },
	    // https://tc39.github.io/ecma262/#sec-white-space
	    isWhiteSpace: function (cp) {
	        return (cp === 0x20) || (cp === 0x09) || (cp === 0x0B) || (cp === 0x0C) || (cp === 0xA0) ||
	            (cp >= 0x1680 && [0x1680, 0x2000, 0x2001, 0x2002, 0x2003, 0x2004, 0x2005, 0x2006, 0x2007, 0x2008, 0x2009, 0x200A, 0x202F, 0x205F, 0x3000, 0xFEFF].indexOf(cp) >= 0);
	    },
	    // https://tc39.github.io/ecma262/#sec-line-terminators
	    isLineTerminator: function (cp) {
	        return (cp === 0x0A) || (cp === 0x0D) || (cp === 0x2028) || (cp === 0x2029);
	    },
	    // https://tc39.github.io/ecma262/#sec-names-and-keywords
	    isIdentifierStart: function (cp) {
	        return (cp === 0x24) || (cp === 0x5F) ||
	            (cp >= 0x41 && cp <= 0x5A) ||
	            (cp >= 0x61 && cp <= 0x7A) ||
	            (cp === 0x5C) ||
	            ((cp >= 0x80) && Regex.NonAsciiIdentifierStart.test(exports.Character.fromCodePoint(cp)));
	    },
	    isIdentifierPart: function (cp) {
	        return (cp === 0x24) || (cp === 0x5F) ||
	            (cp >= 0x41 && cp <= 0x5A) ||
	            (cp >= 0x61 && cp <= 0x7A) ||
	            (cp >= 0x30 && cp <= 0x39) ||
	            (cp === 0x5C) ||
	            ((cp >= 0x80) && Regex.NonAsciiIdentifierPart.test(exports.Character.fromCodePoint(cp)));
	    },
	    // https://tc39.github.io/ecma262/#sec-literals-numeric-literals
	    isDecimalDigit: function (cp) {
	        return (cp >= 0x30 && cp <= 0x39); // 0..9
	    },
	    isHexDigit: function (cp) {
	        return (cp >= 0x30 && cp <= 0x39) ||
	            (cp >= 0x41 && cp <= 0x46) ||
	            (cp >= 0x61 && cp <= 0x66); // a..f
	    },
	    isOctalDigit: function (cp) {
	        return (cp >= 0x30 && cp <= 0x37); // 0..7
	    }
	};


/***/ },
/* 5 */
/***/ function(module, exports, __webpack_require__) {

	"use strict";
	Object.defineProperty(exports, "__esModule", { value: true });
	var jsx_syntax_1 = __webpack_require__(6);
	/* tslint:disable:max-classes-per-file */
	var JSXClosingElement = (function () {
	    function JSXClosingElement(name) {
	        this.type = jsx_syntax_1.JSXSyntax.JSXClosingElement;
	        this.name = name;
	    }
	    return JSXClosingElement;
	}());
	exports.JSXClosingElement = JSXClosingElement;
	var JSXElement = (function () {
	    function JSXElement(openingElement, children, closingElement) {
	        this.type = jsx_syntax_1.JSXSyntax.JSXElement;
	        this.openingElement = openingElement;
	        this.children = children;
	        this.closingElement = closingElement;
	    }
	    return JSXElement;
	}());
	exports.JSXElement = JSXElement;
	var JSXEmptyExpression = (function () {
	    function JSXEmptyExpression() {
	        this.type = jsx_syntax_1.JSXSyntax.JSXEmptyExpression;
	    }
	    return JSXEmptyExpression;
	}());
	exports.JSXEmptyExpression = JSXEmptyExpression;
	var JSXExpressionContainer = (function () {
	    function JSXExpressionContainer(expression) {
	        this.type = jsx_syntax_1.JSXSyntax.JSXExpressionContainer;
	        this.expression = expression;
	    }
	    return JSXExpressionContainer;
	}());
	exports.JSXExpressionContainer = JSXExpressionContainer;
	var JSXIdentifier = (function () {
	    function JSXIdentifier(name) {
	        this.type = jsx_syntax_1.JSXSyntax.JSXIdentifier;
	        this.name = name;
	    }
	    return JSXIdentifier;
	}());
	exports.JSXIdentifier = JSXIdentifier;
	var JSXMemberExpression = (function () {
	    function JSXMemberExpression(object, property) {
	        this.type = jsx_syntax_1.JSXSyntax.JSXMemberExpression;
	        this.object = object;
	        this.property = property;
	    }
	    return JSXMemberExpression;
	}());
	exports.JSXMemberExpression = JSXMemberExpression;
	var JSXAttribute = (function () {
	    function JSXAttribute(name, value) {
	        this.type = jsx_syntax_1.JSXSyntax.JSXAttribute;
	        this.name = name;
	        this.value = value;
	    }
	    return JSXAttribute;
	}());
	exports.JSXAttribute = JSXAttribute;
	var JSXNamespacedName = (function () {
	    function JSXNamespacedName(namespace, name) {
	        this.type = jsx_syntax_1.JSXSyntax.JSXNamespacedName;
	        this.namespace = namespace;
	        this.name = name;
	    }
	    return JSXNamespacedName;
	}());
	exports.JSXNamespacedName = JSXNamespacedName;
	var JSXOpeningElement = (function () {
	    function JSXOpeningElement(name, selfClosing, attributes) {
	        this.type = jsx_syntax_1.JSXSyntax.JSXOpeningElement;
	        this.name = name;
	        this.selfClosing = selfClosing;
	        this.attributes = attributes;
	    }
	    return JSXOpeningElement;
	}());
	exports.JSXOpeningElement = JSXOpeningElement;
	var JSXSpreadAttribute = (function () {
	    function JSXSpreadAttribute(argument) {
	        this.type = jsx_syntax_1.JSXSyntax.JSXSpreadAttribute;
	        this.argument = argument;
	    }
	    return JSXSpreadAttribute;
	}());
	exports.JSXSpreadAttribute = JSXSpreadAttribute;
	var JSXText = (function () {
	    function JSXText(value, raw) {
	        this.type = jsx_syntax_1.JSXSyntax.JSXText;
	        this.value = value;
	        this.raw = raw;
	    }
	    return JSXText;
	}());
	exports.JSXText = JSXText;


/***/ },
/* 6 */
/***/ function(module, exports) {

	"use strict";
	Object.defineProperty(exports, "__esModule", { value: true });
	exports.JSXSyntax = {
	    JSXAttribute: 'JSXAttribute',
	    JSXClosingElement: 'JSXClosingElement',
	    JSXElement: 'JSXElement',
	    JSXEmptyExpression: 'JSXEmptyExpression',
	    JSXExpressionContainer: 'JSXExpressionContainer',
	    JSXIdentifier: 'JSXIdentifier',
	    JSXMemberExpression: 'JSXMemberExpression',
	    JSXNamespacedName: 'JSXNamespacedName',
	    JSXOpeningElement: 'JSXOpeningElement',
	    JSXSpreadAttribute: 'JSXSpreadAttribute',
	    JSXText: 'JSXText'
	};


/***/ },
/* 7 */
/***/ function(module, exports, __webpack_require__) {

	"use strict";
	Object.defineProperty(exports, "__esModule", { value: true });
	var syntax_1 = __webpack_require__(2);
	/* tslint:disable:max-classes-per-file */
	var ArrayExpression = (function () {
	    function ArrayExpression(elements) {
	        this.type = syntax_1.Syntax.ArrayExpression;
	        this.elements = elements;
	    }
	    return ArrayExpression;
	}());
	exports.ArrayExpression = ArrayExpression;
	var ArrayPattern = (function () {
	    function ArrayPattern(elements) {
	        this.type = syntax_1.Syntax.ArrayPattern;
	        this.elements = elements;
	    }
	    return ArrayPattern;
	}());
	exports.ArrayPattern = ArrayPattern;
	var ArrowFunctionExpression = (function () {
	    function ArrowFunctionExpression(params, body, expression) {
	        this.type = syntax_1.Syntax.ArrowFunctionExpression;
	        this.id = null;
	        this.params = params;
	        this.body = body;
	        this.generator = false;
	        this.expression = expression;
	        this.async = false;
	    }
	    return ArrowFunctionExpression;
	}());
	exports.ArrowFunctionExpression = ArrowFunctionExpression;
	var AssignmentExpression = (function () {
	    function AssignmentExpression(operator, left, right) {
	        this.type = syntax_1.Syntax.AssignmentExpression;
	        this.operator = operator;
	        this.left = left;
	        this.right = right;
	    }
	    return AssignmentExpression;
	}());
	exports.AssignmentExpression = AssignmentExpression;
	var AssignmentPattern = (function () {
	    function AssignmentPattern(left, right) {
	        this.type = syntax_1.Syntax.AssignmentPattern;
	        this.left = left;
	        this.right = right;
	    }
	    return AssignmentPattern;
	}());
	exports.AssignmentPattern = AssignmentPattern;
	var AsyncArrowFunctionExpression = (function () {
	    function AsyncArrowFunctionExpression(params, body, expression) {
	        this.type = syntax_1.Syntax.ArrowFunctionExpression;
	        this.id = null;
	        this.params = params;
	        this.body = body;
	        this.generator = false;
	        this.expression = expression;
	        this.async = true;
	    }
	    return AsyncArrowFunctionExpression;
	}());
	exports.AsyncArrowFunctionExpression = AsyncArrowFunctionExpression;
	var AsyncFunctionDeclaration = (function () {
	    function AsyncFunctionDeclaration(id, params, body) {
	        this.type = syntax_1.Syntax.FunctionDeclaration;
	        this.id = id;
	        this.params = params;
	        this.body = body;
	        this.generator = false;
	        this.expression = false;
	        this.async = true;
	    }
	    return AsyncFunctionDeclaration;
	}());
	exports.AsyncFunctionDeclaration = AsyncFunctionDeclaration;
	var AsyncFunctionExpression = (function () {
	    function AsyncFunctionExpression(id, params, body) {
	        this.type = syntax_1.Syntax.FunctionExpression;
	        this.id = id;
	        this.params = params;
	        this.body = body;
	        this.generator = false;
	        this.expression = false;
	        this.async = true;
	    }
	    return AsyncFunctionExpression;
	}());
	exports.AsyncFunctionExpression = AsyncFunctionExpression;
	var AwaitExpression = (function () {
	    function AwaitExpression(argument) {
	        this.type = syntax_1.Syntax.AwaitExpression;
	        this.argument = argument;
	    }
	    return AwaitExpression;
	}());
	exports.AwaitExpression = AwaitExpression;
	var BinaryExpression = (function () {
	    function BinaryExpression(operator, left, right) {
	        var logical = (operator === '||' || operator === '&&');
	        this.type = logical ? syntax_1.Syntax.LogicalExpression : syntax_1.Syntax.BinaryExpression;
	        this.operator = operator;
	        this.left = left;
	        this.right = right;
	    }
	    return BinaryExpression;
	}());
	exports.BinaryExpression = BinaryExpression;
	var BlockStatement = (function () {
	    function BlockStatement(body) {
	        this.type = syntax_1.Syntax.BlockStatement;
	        this.body = body;
	    }
	    return BlockStatement;
	}());
	exports.BlockStatement = BlockStatement;
	var BreakStatement = (function () {
	    function BreakStatement(label) {
	        this.type = syntax_1.Syntax.BreakStatement;
	        this.label = label;
	    }
	    return BreakStatement;
	}());
	exports.BreakStatement = BreakStatement;
	var CallExpression = (function () {
	    function CallExpression(callee, args) {
	        this.type = syntax_1.Syntax.CallExpression;
	        this.callee = callee;
	        this.arguments = args;
	    }
	    return CallExpression;
	}());
	exports.CallExpression = CallExpression;
	var CatchClause = (function () {
	    function CatchClause(param, body) {
	        this.type = syntax_1.Syntax.CatchClause;
	        this.param = param;
	        this.body = body;
	    }
	    return CatchClause;
	}());
	exports.CatchClause = CatchClause;
	var ClassBody = (function () {
	    function ClassBody(body) {
	        this.type = syntax_1.Syntax.ClassBody;
	        this.body = body;
	    }
	    return ClassBody;
	}());
	exports.ClassBody = ClassBody;
	var ClassDeclaration = (function () {
	    function ClassDeclaration(id, superClass, body) {
	        this.type = syntax_1.Syntax.ClassDeclaration;
	        this.id = id;
	        this.superClass = superClass;
	        this.body = body;
	    }
	    return ClassDeclaration;
	}());
	exports.ClassDeclaration = ClassDeclaration;
	var ClassExpression = (function () {
	    function ClassExpression(id, superClass, body) {
	        this.type = syntax_1.Syntax.ClassExpression;
	        this.id = id;
	        this.superClass = superClass;
	        this.body = body;
	    }
	    return ClassExpression;
	}());
	exports.ClassExpression = ClassExpression;
	var ComputedMemberExpression = (function () {
	    function ComputedMemberExpression(object, property) {
	        this.type = syntax_1.Syntax.MemberExpression;
	        this.computed = true;
	        this.object = object;
	        this.property = property;
	    }
	    return ComputedMemberExpression;
	}());
	exports.ComputedMemberExpression = ComputedMemberExpression;
	var ConditionalExpression = (function () {
	    function ConditionalExpression(test, consequent, alternate) {
	        this.type = syntax_1.Syntax.ConditionalExpression;
	        this.test = test;
	        this.consequent = consequent;
	        this.alternate = alternate;
	    }
	    return ConditionalExpression;
	}());
	exports.ConditionalExpression = ConditionalExpression;
	var ContinueStatement = (function () {
	    function ContinueStatement(label) {
	        this.type = syntax_1.Syntax.ContinueStatement;
	        this.label = label;
	    }
	    return ContinueStatement;
	}());
	exports.ContinueStatement = ContinueStatement;
	var DebuggerStatement = (function () {
	    function DebuggerStatement() {
	        this.type = syntax_1.Syntax.DebuggerStatement;
	    }
	    return DebuggerStatement;
	}());
	exports.DebuggerStatement = DebuggerStatement;
	var Directive = (function () {
	    function Directive(expression, directive) {
	        this.type = syntax_1.Syntax.ExpressionStatement;
	        this.expression = expression;
	        this.directive = directive;
	    }
	    return Directive;
	}());
	exports.Directive = Directive;
	var DoWhileStatement = (function () {
	    function DoWhileStatement(body, test) {
	        this.type = syntax_1.Syntax.DoWhileStatement;
	        this.body = body;
	        this.test = test;
	    }
	    return DoWhileStatement;
	}());
	exports.DoWhileStatement = DoWhileStatement;
	var EmptyStatement = (function () {
	    function EmptyStatement() {
	        this.type = syntax_1.Syntax.EmptyStatement;
	    }
	    return EmptyStatement;
	}());
	exports.EmptyStatement = EmptyStatement;
	var ExportAllDeclaration = (function () {
	    function ExportAllDeclaration(source) {
	        this.type = syntax_1.Syntax.ExportAllDeclaration;
	        this.source = source;
	    }
	    return ExportAllDeclaration;
	}());
	exports.ExportAllDeclaration = ExportAllDeclaration;
	var ExportDefaultDeclaration = (function () {
	    function ExportDefaultDeclaration(declaration) {
	        this.type = syntax_1.Syntax.ExportDefaultDeclaration;
	        this.declaration = declaration;
	    }
	    return ExportDefaultDeclaration;
	}());
	exports.ExportDefaultDeclaration = ExportDefaultDeclaration;
	var ExportNamedDeclaration = (function () {
	    function ExportNamedDeclaration(declaration, specifiers, source) {
	        this.type = syntax_1.Syntax.ExportNamedDeclaration;
	        this.declaration = declaration;
	        this.specifiers = specifiers;
	        this.source = source;
	    }
	    return ExportNamedDeclaration;
	}());
	exports.ExportNamedDeclaration = ExportNamedDeclaration;
	var ExportSpecifier = (function () {
	    function ExportSpecifier(local, exported) {
	        this.type = syntax_1.Syntax.ExportSpecifier;
	        this.exported = exported;
	        this.local = local;
	    }
	    return ExportSpecifier;
	}());
	exports.ExportSpecifier = ExportSpecifier;
	var ExpressionStatement = (function () {
	    function ExpressionStatement(expression) {
	        this.type = syntax_1.Syntax.ExpressionStatement;
	        this.expression = expression;
	    }
	    return ExpressionStatement;
	}());
	exports.ExpressionStatement = ExpressionStatement;
	var ForInStatement = (function () {
	    function ForInStatement(left, right, body) {
	        this.type = syntax_1.Syntax.ForInStatement;
	        this.left = left;
	        this.right = right;
	        this.body = body;
	        this.each = false;
	    }
	    return ForInStatement;
	}());
	exports.ForInStatement = ForInStatement;
	var ForOfStatement = (function () {
	    function ForOfStatement(left, right, body) {
	        this.type = syntax_1.Syntax.ForOfStatement;
	        this.left = left;
	        this.right = right;
	        this.body = body;
	    }
	    return ForOfStatement;
	}());
	exports.ForOfStatement = ForOfStatement;
	var ForStatement = (function () {
	    function ForStatement(init, test, update, body) {
	        this.type = syntax_1.Syntax.ForStatement;
	        this.init = init;
	        this.test = test;
	        this.update = update;
	        this.body = body;
	    }
	    return ForStatement;
	}());
	exports.ForStatement = ForStatement;
	var FunctionDeclaration = (function () {
	    function FunctionDeclaration(id, params, body, generator) {
	        this.type = syntax_1.Syntax.FunctionDeclaration;
	        this.id = id;
	        this.params = params;
	        this.body = body;
	        this.generator = generator;
	        this.expression = false;
	        this.async = false;
	    }
	    return FunctionDeclaration;
	}());
	exports.FunctionDeclaration = FunctionDeclaration;
	var FunctionExpression = (function () {
	    function FunctionExpression(id, params, body, generator) {
	        this.type = syntax_1.Syntax.FunctionExpression;
	        this.id = id;
	        this.params = params;
	        this.body = body;
	        this.generator = generator;
	        this.expression = false;
	        this.async = false;
	    }
	    return FunctionExpression;
	}());
	exports.FunctionExpression = FunctionExpression;
	var Identifier = (function () {
	    function Identifier(name) {
	        this.type = syntax_1.Syntax.Identifier;
	        this.name = name;
	    }
	    return Identifier;
	}());
	exports.Identifier = Identifier;
	var IfStatement = (function () {
	    function IfStatement(test, consequent, alternate) {
	        this.type = syntax_1.Syntax.IfStatement;
	        this.test = test;
	        this.consequent = consequent;
	        this.alternate = alternate;
	    }
	    return IfStatement;
	}());
	exports.IfStatement = IfStatement;
	var ImportDeclaration = (function () {
	    function ImportDeclaration(specifiers, source) {
	        this.type = syntax_1.Syntax.ImportDeclaration;
	        this.specifiers = specifiers;
	        this.source = source;
	    }
	    return ImportDeclaration;
	}());
	exports.ImportDeclaration = ImportDeclaration;
	var ImportDefaultSpecifier = (function () {
	    function ImportDefaultSpecifier(local) {
	        this.type = syntax_1.Syntax.ImportDefaultSpecifier;
	        this.local = local;
	    }
	    return ImportDefaultSpecifier;
	}());
	exports.ImportDefaultSpecifier = ImportDefaultSpecifier;
	var ImportNamespaceSpecifier = (function () {
	    function ImportNamespaceSpecifier(local) {
	        this.type = syntax_1.Syntax.ImportNamespaceSpecifier;
	        this.local = local;
	    }
	    return ImportNamespaceSpecifier;
	}());
	exports.ImportNamespaceSpecifier = ImportNamespaceSpecifier;
	var ImportSpecifier = (function () {
	    function ImportSpecifier(local, imported) {
	        this.type = syntax_1.Syntax.ImportSpecifier;
	        this.local = local;
	        this.imported = imported;
	    }
	    return ImportSpecifier;
	}());
	exports.ImportSpecifier = ImportSpecifier;
	var LabeledStatement = (function () {
	    function LabeledStatement(label, body) {
	        this.type = syntax_1.Syntax.LabeledStatement;
	        this.label = label;
	        this.body = body;
	    }
	    return LabeledStatement;
	}());
	exports.LabeledStatement = LabeledStatement;
	var Literal = (function () {
	    function Literal(value, raw) {
	        this.type = syntax_1.Syntax.Literal;
	        this.value = value;
	        this.raw = raw;
	    }
	    return Literal;
	}());
	exports.Literal = Literal;
	var MetaProperty = (function () {
	    function MetaProperty(meta, property) {
	        this.type = syntax_1.Syntax.MetaProperty;
	        this.meta = meta;
	        this.property = property;
	    }
	    return MetaProperty;
	}());
	exports.MetaProperty = MetaProperty;
	var MethodDefinition = (function () {
	    function MethodDefinition(key, computed, value, kind, isStatic) {
	        this.type = syntax_1.Syntax.MethodDefinition;
	        this.key = key;
	        this.computed = computed;
	        this.value = value;
	        this.kind = kind;
	        this.static = isStatic;
	    }
	    return MethodDefinition;
	}());
	exports.MethodDefinition = MethodDefinition;
	var Module = (function () {
	    function Module(body) {
	        this.type = syntax_1.Syntax.Program;
	        this.body = body;
	        this.sourceType = 'module';
	    }
	    return Module;
	}());
	exports.Module = Module;
	var NewExpression = (function () {
	    function NewExpression(callee, args) {
	        this.type = syntax_1.Syntax.NewExpression;
	        this.callee = callee;
	        this.arguments = args;
	    }
	    return NewExpression;
	}());
	exports.NewExpression = NewExpression;
	var ObjectExpression = (function () {
	    function ObjectExpression(properties) {
	        this.type = syntax_1.Syntax.ObjectExpression;
	        this.properties = properties;
	    }
	    return ObjectExpression;
	}());
	exports.ObjectExpression = ObjectExpression;
	var ObjectPattern = (function () {
	    function ObjectPattern(properties) {
	        this.type = syntax_1.Syntax.ObjectPattern;
	        this.properties = properties;
	    }
	    return ObjectPattern;
	}());
	exports.ObjectPattern = ObjectPattern;
	var Property = (function () {
	    function Property(kind, key, computed, value, method, shorthand) {
	        this.type = syntax_1.Syntax.Property;
	        this.key = key;
	        this.computed = computed;
	        this.value = value;
	        this.kind = kind;
	        this.method = method;
	        this.shorthand = shorthand;
	    }
	    return Property;
	}());
	exports.Property = Property;
	var RegexLiteral = (function () {
	    function RegexLiteral(value, raw, pattern, flags) {
	        this.type = syntax_1.Syntax.Literal;
	        this.value = value;
	        this.raw = raw;
	        this.regex = { pattern: pattern, flags: flags };
	    }
	    return RegexLiteral;
	}());
	exports.RegexLiteral = RegexLiteral;
	var RestElement = (function () {
	    function RestElement(argument) {
	        this.type = syntax_1.Syntax.RestElement;
	        this.argument = argument;
	    }
	    return RestElement;
	}());
	exports.RestElement = RestElement;
	var ReturnStatement = (function () {
	    function ReturnStatement(argument) {
	        this.type = syntax_1.Syntax.ReturnStatement;
	        this.argument = argument;
	    }
	    return ReturnStatement;
	}());
	exports.ReturnStatement = ReturnStatement;
	var Script = (function () {
	    function Script(body) {
	        this.type = syntax_1.Syntax.Program;
	        this.body = body;
	        this.sourceType = 'script';
	    }
	    return Script;
	}());
	exports.Script = Script;
	var SequenceExpression = (function () {
	    function SequenceExpression(expressions) {
	        this.type = syntax_1.Syntax.SequenceExpression;
	        this.expressions = expressions;
	    }
	    return SequenceExpression;
	}());
	exports.SequenceExpression = SequenceExpression;
	var SpreadElement = (function () {
	    function SpreadElement(argument) {
	        this.type = syntax_1.Syntax.SpreadElement;
	        this.argument = argument;
	    }
	    return SpreadElement;
	}());
	exports.SpreadElement = SpreadElement;
	var StaticMemberExpression = (function () {
	    function StaticMemberExpression(object, property) {
	        this.type = syntax_1.Syntax.MemberExpression;
	        this.computed = false;
	        this.object = object;
	        this.property = property;
	    }
	    return StaticMemberExpression;
	}());
	exports.StaticMemberExpression = StaticMemberExpression;
	var Super = (function () {
	    function Super() {
	        this.type = syntax_1.Syntax.Super;
	    }
	    return Super;
	}());
	exports.Super = Super;
	var SwitchCase = (function () {
	    function SwitchCase(test, consequent) {
	        this.type = syntax_1.Syntax.SwitchCase;
	        this.test = test;
	        this.consequent = consequent;
	    }
	    return SwitchCase;
	}());
	exports.SwitchCase = SwitchCase;
	var SwitchStatement = (function () {
	    function SwitchStatement(discriminant, cases) {
	        this.type = syntax_1.Syntax.SwitchStatement;
	        this.discriminant = discriminant;
	        this.cases = cases;
	    }
	    return SwitchStatement;
	}());
	exports.SwitchStatement = SwitchStatement;
	var TaggedTemplateExpression = (function () {
	    function TaggedTemplateExpression(tag, quasi) {
	        this.type = syntax_1.Syntax.TaggedTemplateExpression;
	        this.tag = tag;
	        this.quasi = quasi;
	    }
	    return TaggedTemplateExpression;
	}());
	exports.TaggedTemplateExpression = TaggedTemplateExpression;
	var TemplateElement = (function () {
	    function TemplateElement(value, tail) {
	        this.type = syntax_1.Syntax.TemplateElement;
	        this.value = value;
	        this.tail = tail;
	    }
	    return TemplateElement;
	}());
	exports.TemplateElement = TemplateElement;
	var TemplateLiteral = (function () {
	    function TemplateLiteral(quasis, expressions) {
	        this.type = syntax_1.Syntax.TemplateLiteral;
	        this.quasis = quasis;
	        this.expressions = expressions;
	    }
	    return TemplateLiteral;
	}());
	exports.TemplateLiteral = TemplateLiteral;
	var ThisExpression = (function () {
	    function ThisExpression() {
	        this.type = syntax_1.Syntax.ThisExpression;
	    }
	    return ThisExpression;
	}());
	exports.ThisExpression = ThisExpression;
	var ThrowStatement = (function () {
	    function ThrowStatement(argument) {
	        this.type = syntax_1.Syntax.ThrowStatement;
	        this.argument = argument;
	    }
	    return ThrowStatement;
	}());
	exports.ThrowStatement = ThrowStatement;
	var TryStatement = (function () {
	    function TryStatement(block, handler, finalizer) {
	        this.type = syntax_1.Syntax.TryStatement;
	        this.block = block;
	        this.handler = handler;
	        this.finalizer = finalizer;
	    }
	    return TryStatement;
	}());
	exports.TryStatement = TryStatement;
	var UnaryExpression = (function () {
	    function UnaryExpression(operator, argument) {
	        this.type = syntax_1.Syntax.UnaryExpression;
	        this.operator = operator;
	        this.argument = argument;
	        this.prefix = true;
	    }
	    return UnaryExpression;
	}());
	exports.UnaryExpression = UnaryExpression;
	var UpdateExpression = (function () {
	    function UpdateExpression(operator, argument, prefix) {
	        this.type = syntax_1.Syntax.UpdateExpression;
	        this.operator = operator;
	        this.argument = argument;
	        this.prefix = prefix;
	    }
	    return UpdateExpression;
	}());
	exports.UpdateExpression = UpdateExpression;
	var VariableDeclaration = (function () {
	    function VariableDeclaration(declarations, kind) {
	        this.type = syntax_1.Syntax.VariableDeclaration;
	        this.declarations = declarations;
	        this.kind = kind;
	    }
	    return VariableDeclaration;
	}());
	exports.VariableDeclaration = VariableDeclaration;
	var VariableDeclarator = (function () {
	    function VariableDeclarator(id, init) {
	        this.type = syntax_1.Syntax.VariableDeclarator;
	        this.id = id;
	        this.init = init;
	    }
	    return VariableDeclarator;
	}());
	exports.VariableDeclarator = VariableDeclarator;
	var WhileStatement = (function () {
	    function WhileStatement(test, body) {
	        this.type = syntax_1.Syntax.WhileStatement;
	        this.test = test;
	        this.body = body;
	    }
	    return WhileStatement;
	}());
	exports.WhileStatement = WhileStatement;
	var WithStatement = (function () {
	    function WithStatement(object, body) {
	        this.type = syntax_1.Syntax.WithStatement;
	        this.object = object;
	        this.body = body;
	    }
	    return WithStatement;
	}());
	exports.WithStatement = WithStatement;
	var YieldExpression = (function () {
	    function YieldExpression(argument, delegate) {
	        this.type = syntax_1.Syntax.YieldExpression;
	        this.argument = argument;
	        this.delegate = delegate;
	    }
	    return YieldExpression;
	}());
	exports.YieldExpression = YieldExpression;


/***/ },
/* 8 */
/***/ function(module, exports, __webpack_require__) {

	"use strict";
	Object.defineProperty(exports, "__esModule", { value: true });
	var assert_1 = __webpack_require__(9);
	var error_handler_1 = __webpack_require__(10);
	var messages_1 = __webpack_require__(11);
	var Node = __webpack_require__(7);
	var scanner_1 = __webpack_require__(12);
	var syntax_1 = __webpack_require__(2);
	var token_1 = __webpack_require__(13);
	var ArrowParameterPlaceHolder = 'ArrowParameterPlaceHolder';
	var Parser = (function () {
	    function Parser(code, options, delegate) {
	        if (options === void 0) { options = {}; }
	        this.config = {
	            range: (typeof options.range === 'boolean') && options.range,
	            loc: (typeof options.loc === 'boolean') && options.loc,
	            source: null,
	            tokens: (typeof options.tokens === 'boolean') && options.tokens,
	            comment: (typeof options.comment === 'boolean') && options.comment,
	            tolerant: (typeof options.tolerant === 'boolean') && options.tolerant
	        };
	        if (this.config.loc && options.source && options.source !== null) {
	            this.config.source = String(options.source);
	        }
	        this.delegate = delegate;
	        this.errorHandler = new error_handler_1.ErrorHandler();
	        this.errorHandler.tolerant = this.config.tolerant;
	        this.scanner = new scanner_1.Scanner(code, this.errorHandler);
	        this.scanner.trackComment = this.config.comment;
	        this.operatorPrecedence = {
	            ')': 0,
	            ';': 0,
	            ',': 0,
	            '=': 0,
	            ']': 0,
	            '||': 1,
	            '&&': 2,
	            '|': 3,
	            '^': 4,
	            '&': 5,
	            '==': 6,
	            '!=': 6,
	            '===': 6,
	            '!==': 6,
	            '<': 7,
	            '>': 7,
	            '<=': 7,
	            '>=': 7,
	            '<<': 8,
	            '>>': 8,
	            '>>>': 8,
	            '+': 9,
	            '-': 9,
	            '*': 11,
	            '/': 11,
	            '%': 11
	        };
	        this.lookahead = {
	            type: 2 /* EOF */,
	            value: '',
	            lineNumber: this.scanner.lineNumber,
	            lineStart: 0,
	            start: 0,
	            end: 0
	        };
	        this.hasLineTerminator = false;
	        this.context = {
	            isModule: false,
	            await: false,
	            allowIn: true,
	            allowStrictDirective: true,
	            allowYield: true,
	            firstCoverInitializedNameError: null,
	            isAssignmentTarget: false,
	            isBindingElement: false,
	            inFunctionBody: false,
	            inIteration: false,
	            inSwitch: false,
	            labelSet: {},
	            strict: false
	        };
	        this.tokens = [];
	        this.startMarker = {
	            index: 0,
	            line: this.scanner.lineNumber,
	            column: 0
	        };
	        this.lastMarker = {
	            index: 0,
	            line: this.scanner.lineNumber,
	            column: 0
	        };
	        this.nextToken();
	        this.lastMarker = {
	            index: this.scanner.index,
	            line: this.scanner.lineNumber,
	            column: this.scanner.index - this.scanner.lineStart
	        };
	    }
	    Parser.prototype.throwError = function (messageFormat) {
	        var values = [];
	        for (var _i = 1; _i < arguments.length; _i++) {
	            values[_i - 1] = arguments[_i];
	        }
	        var args = Array.prototype.slice.call(arguments, 1);
	        var msg = messageFormat.replace(/%(\d)/g, function (whole, idx) {
	            assert_1.assert(idx < args.length, 'Message reference must be in range');
	            return args[idx];
	        });
	        var index = this.lastMarker.index;
	        var line = this.lastMarker.line;
	        var column = this.lastMarker.column + 1;
	        throw this.errorHandler.createError(index, line, column, msg);
	    };
	    Parser.prototype.tolerateError = function (messageFormat) {
	        var values = [];
	        for (var _i = 1; _i < arguments.length; _i++) {
	            values[_i - 1] = arguments[_i];
	        }
	        var args = Array.prototype.slice.call(arguments, 1);
	        var msg = messageFormat.replace(/%(\d)/g, function (whole, idx) {
	            assert_1.assert(idx < args.length, 'Message reference must be in range');
	            return args[idx];
	        });
	        var index = this.lastMarker.index;
	        var line = this.scanner.lineNumber;
	        var column = this.lastMarker.column + 1;
	        this.errorHandler.tolerateError(index, line, column, msg);
	    };
	    // Throw an exception because of the token.
	    Parser.prototype.unexpectedTokenError = function (token, message) {
	        var msg = message || messages_1.Messages.UnexpectedToken;
	        var value;
	        if (token) {
	            if (!message) {
	                msg = (token.type === 2 /* EOF */) ? messages_1.Messages.UnexpectedEOS :
	                    (token.type === 3 /* Identifier */) ? messages_1.Messages.UnexpectedIdentifier :
	                        (token.type === 6 /* NumericLiteral */) ? messages_1.Messages.UnexpectedNumber :
	                            (token.type === 8 /* StringLiteral */) ? messages_1.Messages.UnexpectedString :
	                                (token.type === 10 /* Template */) ? messages_1.Messages.UnexpectedTemplate :
	                                    messages_1.Messages.UnexpectedToken;
	                if (token.type === 4 /* Keyword */) {
	                    if (this.scanner.isFutureReservedWord(token.value)) {
	                        msg = messages_1.Messages.UnexpectedReserved;
	                    }
	                    else if (this.context.strict && this.scanner.isStrictModeReservedWord(token.value)) {
	                        msg = messages_1.Messages.StrictReservedWord;
	                    }
	                }
	            }
	            value = token.value;
	        }
	        else {
	            value = 'ILLEGAL';
	        }
	        msg = msg.replace('%0', value);
	        if (token && typeof token.lineNumber === 'number') {
	            var index = token.start;
	            var line = token.lineNumber;
	            var lastMarkerLineStart = this.lastMarker.index - this.lastMarker.column;
	            var column = token.start - lastMarkerLineStart + 1;
	            return this.errorHandler.createError(index, line, column, msg);
	        }
	        else {
	            var index = this.lastMarker.index;
	            var line = this.lastMarker.line;
	            var column = this.lastMarker.column + 1;
	            return this.errorHandler.createError(index, line, column, msg);
	        }
	    };
	    Parser.prototype.throwUnexpectedToken = function (token, message) {
	        throw this.unexpectedTokenError(token, message);
	    };
	    Parser.prototype.tolerateUnexpectedToken = function (token, message) {
	        this.errorHandler.tolerate(this.unexpectedTokenError(token, message));
	    };
	    Parser.prototype.collectComments = function () {
	        if (!this.config.comment) {
	            this.scanner.scanComments();
	        }
	        else {
	            var comments = this.scanner.scanComments();
	            if (comments.length > 0 && this.delegate) {
	                for (var i = 0; i < comments.length; ++i) {
	                    var e = comments[i];
	                    var node = void 0;
	                    node = {
	                        type: e.multiLine ? 'BlockComment' : 'LineComment',
	                        value: this.scanner.source.slice(e.slice[0], e.slice[1])
	                    };
	                    if (this.config.range) {
	                        node.range = e.range;
	                    }
	                    if (this.config.loc) {
	                        node.loc = e.loc;
	                    }
	                    var metadata = {
	                        start: {
	                            line: e.loc.start.line,
	                            column: e.loc.start.column,
	                            offset: e.range[0]
	                        },
	                        end: {
	                            line: e.loc.end.line,
	                            column: e.loc.end.column,
	                            offset: e.range[1]
	                        }
	                    };
	                    this.delegate(node, metadata);
	                }
	            }
	        }
	    };
	    // From internal representation to an external structure
	    Parser.prototype.getTokenRaw = function (token) {
	        return this.scanner.source.slice(token.start, token.end);
	    };
	    Parser.prototype.convertToken = function (token) {
	        var t = {
	            type: token_1.TokenName[token.type],
	            value: this.getTokenRaw(token)
	        };
	        if (this.config.range) {
	            t.range = [token.start, token.end];
	        }
	        if (this.config.loc) {
	            t.loc = {
	                start: {
	                    line: this.startMarker.line,
	                    column: this.startMarker.column
	                },
	                end: {
	                    line: this.scanner.lineNumber,
	                    column: this.scanner.index - this.scanner.lineStart
	                }
	            };
	        }
	        if (token.type === 9 /* RegularExpression */) {
	            var pattern = token.pattern;
	            var flags = token.flags;
	            t.regex = { pattern: pattern, flags: flags };
	        }
	        return t;
	    };
	    Parser.prototype.nextToken = function () {
	        var token = this.lookahead;
	        this.lastMarker.index = this.scanner.index;
	        this.lastMarker.line = this.scanner.lineNumber;
	        this.lastMarker.column = this.scanner.index - this.scanner.lineStart;
	        this.collectComments();
	        if (this.scanner.index !== this.startMarker.index) {
	            this.startMarker.index = this.scanner.index;
	            this.startMarker.line = this.scanner.lineNumber;
	            this.startMarker.column = this.scanner.index - this.scanner.lineStart;
	        }
	        var next = this.scanner.lex();
	        this.hasLineTerminator = (token.lineNumber !== next.lineNumber);
	        if (next && this.context.strict && next.type === 3 /* Identifier */) {
	            if (this.scanner.isStrictModeReservedWord(next.value)) {
	                next.type = 4 /* Keyword */;
	            }
	        }
	        this.lookahead = next;
	        if (this.config.tokens && next.type !== 2 /* EOF */) {
	            this.tokens.push(this.convertToken(next));
	        }
	        return token;
	    };
	    Parser.prototype.nextRegexToken = function () {
	        this.collectComments();
	        var token = this.scanner.scanRegExp();
	        if (this.config.tokens) {
	            // Pop the previous token, '/' or '/='
	            // This is added from the lookahead token.
	            this.tokens.pop();
	            this.tokens.push(this.convertToken(token));
	        }
	        // Prime the next lookahead.
	        this.lookahead = token;
	        this.nextToken();
	        return token;
	    };
	    Parser.prototype.createNode = function () {
	        return {
	            index: this.startMarker.index,
	            line: this.startMarker.line,
	            column: this.startMarker.column
	        };
	    };
	    Parser.prototype.startNode = function (token, lastLineStart) {
	        if (lastLineStart === void 0) { lastLineStart = 0; }
	        var column = token.start - token.lineStart;
	        var line = token.lineNumber;
	        if (column < 0) {
	            column += lastLineStart;
	            line--;
	        }
	        return {
	            index: token.start,
	            line: line,
	            column: column
	        };
	    };
	    Parser.prototype.finalize = function (marker, node) {
	        if (this.config.range) {
	            node.range = [marker.index, this.lastMarker.index];
	        }
	        if (this.config.loc) {
	            node.loc = {
	                start: {
	                    line: marker.line,
	                    column: marker.column,
	                },
	                end: {
	                    line: this.lastMarker.line,
	                    column: this.lastMarker.column
	                }
	            };
	            if (this.config.source) {
	                node.loc.source = this.config.source;
	            }
	        }
	        if (this.delegate) {
	            var metadata = {
	                start: {
	                    line: marker.line,
	                    column: marker.column,
	                    offset: marker.index
	                },
	                end: {
	                    line: this.lastMarker.line,
	                    column: this.lastMarker.column,
	                    offset: this.lastMarker.index
	                }
	            };
	            this.delegate(node, metadata);
	        }
	        return node;
	    };
	    // Expect the next token to match the specified punctuator.
	    // If not, an exception will be thrown.
	    Parser.prototype.expect = function (value) {
	        var token = this.nextToken();
	        if (token.type !== 7 /* Punctuator */ || token.value !== value) {
	            this.throwUnexpectedToken(token);
	        }
	    };
	    // Quietly expect a comma when in tolerant mode, otherwise delegates to expect().
	    Parser.prototype.expectCommaSeparator = function () {
	        if (this.config.tolerant) {
	            var token = this.lookahead;
	            if (token.type === 7 /* Punctuator */ && token.value === ',') {
	                this.nextToken();
	            }
	            else if (token.type === 7 /* Punctuator */ && token.value === ';') {
	                this.nextToken();
	                this.tolerateUnexpectedToken(token);
	            }
	            else {
	                this.tolerateUnexpectedToken(token, messages_1.Messages.UnexpectedToken);
	            }
	        }
	        else {
	            this.expect(',');
	        }
	    };
	    // Expect the next token to match the specified keyword.
	    // If not, an exception will be thrown.
	    Parser.prototype.expectKeyword = function (keyword) {
	        var token = this.nextToken();
	        if (token.type !== 4 /* Keyword */ || token.value !== keyword) {
	            this.throwUnexpectedToken(token);
	        }
	    };
	    // Return true if the next token matches the specified punctuator.
	    Parser.prototype.match = function (value) {
	        return this.lookahead.type === 7 /* Punctuator */ && this.lookahead.value === value;
	    };
	    // Return true if the next token matches the specified keyword
	    Parser.prototype.matchKeyword = function (keyword) {
	        return this.lookahead.type === 4 /* Keyword */ && this.lookahead.value === keyword;
	    };
	    // Return true if the next token matches the specified contextual keyword
	    // (where an identifier is sometimes a keyword depending on the context)
	    Parser.prototype.matchContextualKeyword = function (keyword) {
	        return this.lookahead.type === 3 /* Identifier */ && this.lookahead.value === keyword;
	    };
	    // Return true if the next token is an assignment operator
	    Parser.prototype.matchAssign = function () {
	        if (this.lookahead.type !== 7 /* Punctuator */) {
	            return false;
	        }
	        var op = this.lookahead.value;
	        return op === '=' ||
	            op === '*=' ||
	            op === '**=' ||
	            op === '/=' ||
	            op === '%=' ||
	            op === '+=' ||
	            op === '-=' ||
	            op === '<<=' ||
	            op === '>>=' ||
	            op === '>>>=' ||
	            op === '&=' ||
	            op === '^=' ||
	            op === '|=';
	    };
	    // Cover grammar support.
	    //
	    // When an assignment expression position starts with an left parenthesis, the determination of the type
	    // of the syntax is to be deferred arbitrarily long until the end of the parentheses pair (plus a lookahead)
	    // or the first comma. This situation also defers the determination of all the expressions nested in the pair.
	    //
	    // There are three productions that can be parsed in a parentheses pair that needs to be determined
	    // after the outermost pair is closed. They are:
	    //
	    //   1. AssignmentExpression
	    //   2. BindingElements
	    //   3. AssignmentTargets
	    //
	    // In order to avoid exponential backtracking, we use two flags to denote if the production can be
	    // binding element or assignment target.
	    //
	    // The three productions have the relationship:
	    //
	    //   BindingElements ⊆ AssignmentTargets ⊆ AssignmentExpression
	    //
	    // with a single exception that CoverInitializedName when used directly in an Expression, generates
	    // an early error. Therefore, we need the third state, firstCoverInitializedNameError, to track the
	    // first usage of CoverInitializedName and report it when we reached the end of the parentheses pair.
	    //
	    // isolateCoverGrammar function runs the given parser function with a new cover grammar context, and it does not
	    // effect the current flags. This means the production the parser parses is only used as an expression. Therefore
	    // the CoverInitializedName check is conducted.
	    //
	    // inheritCoverGrammar function runs the given parse function with a new cover grammar context, and it propagates
	    // the flags outside of the parser. This means the production the parser parses is used as a part of a potential
	    // pattern. The CoverInitializedName check is deferred.
	    Parser.prototype.isolateCoverGrammar = function (parseFunction) {
	        var previousIsBindingElement = this.context.isBindingElement;
	        var previousIsAssignmentTarget = this.context.isAssignmentTarget;
	        var previousFirstCoverInitializedNameError = this.context.firstCoverInitializedNameError;
	        this.context.isBindingElement = true;
	        this.context.isAssignmentTarget = true;
	        this.context.firstCoverInitializedNameError = null;
	        var result = parseFunction.call(this);
	        if (this.context.firstCoverInitializedNameError !== null) {
	            this.throwUnexpectedToken(this.context.firstCoverInitializedNameError);
	        }
	        this.context.isBindingElement = previousIsBindingElement;
	        this.context.isAssignmentTarget = previousIsAssignmentTarget;
	        this.context.firstCoverInitializedNameError = previousFirstCoverInitializedNameError;
	        return result;
	    };
	    Parser.prototype.inheritCoverGrammar = function (parseFunction) {
	        var previousIsBindingElement = this.context.isBindingElement;
	        var previousIsAssignmentTarget = this.context.isAssignmentTarget;
	        var previousFirstCoverInitializedNameError = this.context.firstCoverInitializedNameError;
	        this.context.isBindingElement = true;
	        this.context.isAssignmentTarget = true;
	        this.context.firstCoverInitializedNameError = null;
	        var result = parseFunction.call(this);
	        this.context.isBindingElement = this.context.isBindingElement && previousIsBindingElement;
	        this.context.isAssignmentTarget = this.context.isAssignmentTarget && previousIsAssignmentTarget;
	        this.context.firstCoverInitializedNameError = previousFirstCoverInitializedNameError || this.context.firstCoverInitializedNameError;
	        return result;
	    };
	    Parser.prototype.consumeSemicolon = function () {
	        if (this.match(';')) {
	            this.nextToken();
	        }
	        else if (!this.hasLineTerminator) {
	            if (this.lookahead.type !== 2 /* EOF */ && !this.match('}')) {
	                this.throwUnexpectedToken(this.lookahead);
	            }
	            this.lastMarker.index = this.startMarker.index;
	            this.lastMarker.line = this.startMarker.line;
	            this.lastMarker.column = this.startMarker.column;
	        }
	    };
	    // https://tc39.github.io/ecma262/#sec-primary-expression
	    Parser.prototype.parsePrimaryExpression = function () {
	        var node = this.createNode();
	        var expr;
	        var token, raw;
	        switch (this.lookahead.type) {
	            case 3 /* Identifier */:
	                if ((this.context.isModule || this.context.await) && this.lookahead.value === 'await') {
	                    this.tolerateUnexpectedToken(this.lookahead);
	                }
	                expr = this.matchAsyncFunction() ? this.parseFunctionExpression() : this.finalize(node, new Node.Identifier(this.nextToken().value));
	                break;
	            case 6 /* NumericLiteral */:
	            case 8 /* StringLiteral */:
	                if (this.context.strict && this.lookahead.octal) {
	                    this.tolerateUnexpectedToken(this.lookahead, messages_1.Messages.StrictOctalLiteral);
	                }
	                this.context.isAssignmentTarget = false;
	                this.context.isBindingElement = false;
	                token = this.nextToken();
	                raw = this.getTokenRaw(token);
	                expr = this.finalize(node, new Node.Literal(token.value, raw));
	                break;
	            case 1 /* BooleanLiteral */:
	                this.context.isAssignmentTarget = false;
	                this.context.isBindingElement = false;
	                token = this.nextToken();
	                raw = this.getTokenRaw(token);
	                expr = this.finalize(node, new Node.Literal(token.value === 'true', raw));
	                break;
	            case 5 /* NullLiteral */:
	                this.context.isAssignmentTarget = false;
	                this.context.isBindingElement = false;
	                token = this.nextToken();
	                raw = this.getTokenRaw(token);
	                expr = this.finalize(node, new Node.Literal(null, raw));
	                break;
	            case 10 /* Template */:
	                expr = this.parseTemplateLiteral();
	                break;
	            case 7 /* Punctuator */:
	                switch (this.lookahead.value) {
	                    case '(':
	                        this.context.isBindingElement = false;
	                        expr = this.inheritCoverGrammar(this.parseGroupExpression);
	                        break;
	                    case '[':
	                        expr = this.inheritCoverGrammar(this.parseArrayInitializer);
	                        break;
	                    case '{':
	                        expr = this.inheritCoverGrammar(this.parseObjectInitializer);
	                        break;
	                    case '/':
	                    case '/=':
	                        this.context.isAssignmentTarget = false;
	                        this.context.isBindingElement = false;
	                        this.scanner.index = this.startMarker.index;
	                        token = this.nextRegexToken();
	                        raw = this.getTokenRaw(token);
	                        expr = this.finalize(node, new Node.RegexLiteral(token.regex, raw, token.pattern, token.flags));
	                        break;
	                    default:
	                        expr = this.throwUnexpectedToken(this.nextToken());
	                }
	                break;
	            case 4 /* Keyword */:
	                if (!this.context.strict && this.context.allowYield && this.matchKeyword('yield')) {
	                    expr = this.parseIdentifierName();
	                }
	                else if (!this.context.strict && this.matchKeyword('let')) {
	                    expr = this.finalize(node, new Node.Identifier(this.nextToken().value));
	                }
	                else {
	                    this.context.isAssignmentTarget = false;
	                    this.context.isBindingElement = false;
	                    if (this.matchKeyword('function')) {
	                        expr = this.parseFunctionExpression();
	                    }
	                    else if (this.matchKeyword('this')) {
	                        this.nextToken();
	                        expr = this.finalize(node, new Node.ThisExpression());
	                    }
	                    else if (this.matchKeyword('class')) {
	                        expr = this.parseClassExpression();
	                    }
	                    else {
	                        expr = this.throwUnexpectedToken(this.nextToken());
	                    }
	                }
	                break;
	            default:
	                expr = this.throwUnexpectedToken(this.nextToken());
	        }
	        return expr;
	    };
	    // https://tc39.github.io/ecma262/#sec-array-initializer
	    Parser.prototype.parseSpreadElement = function () {
	        var node = this.createNode();
	        this.expect('...');
	        var arg = this.inheritCoverGrammar(this.parseAssignmentExpression);
	        return this.finalize(node, new Node.SpreadElement(arg));
	    };
	    Parser.prototype.parseArrayInitializer = function () {
	        var node = this.createNode();
	        var elements = [];
	        this.expect('[');
	        while (!this.match(']')) {
	            if (this.match(',')) {
	                this.nextToken();
	                elements.push(null);
	            }
	            else if (this.match('...')) {
	                var element = this.parseSpreadElement();
	                if (!this.match(']')) {
	                    this.context.isAssignmentTarget = false;
	                    this.context.isBindingElement = false;
	                    this.expect(',');
	                }
	                elements.push(element);
	            }
	            else {
	                elements.push(this.inheritCoverGrammar(this.parseAssignmentExpression));
	                if (!this.match(']')) {
	                    this.expect(',');
	                }
	            }
	        }
	        this.expect(']');
	        return this.finalize(node, new Node.ArrayExpression(elements));
	    };
	    // https://tc39.github.io/ecma262/#sec-object-initializer
	    Parser.prototype.parsePropertyMethod = function (params) {
	        this.context.isAssignmentTarget = false;
	        this.context.isBindingElement = false;
	        var previousStrict = this.context.strict;
	        var previousAllowStrictDirective = this.context.allowStrictDirective;
	        this.context.allowStrictDirective = params.simple;
	        var body = this.isolateCoverGrammar(this.parseFunctionSourceElements);
	        if (this.context.strict && params.firstRestricted) {
	            this.tolerateUnexpectedToken(params.firstRestricted, params.message);
	        }
	        if (this.context.strict && params.stricted) {
	            this.tolerateUnexpectedToken(params.stricted, params.message);
	        }
	        this.context.strict = previousStrict;
	        this.context.allowStrictDirective = previousAllowStrictDirective;
	        return body;
	    };
	    Parser.prototype.parsePropertyMethodFunction = function () {
	        var isGenerator = false;
	        var node = this.createNode();
	        var previousAllowYield = this.context.allowYield;
	        this.context.allowYield = true;
	        var params = this.parseFormalParameters();
	        var method = this.parsePropertyMethod(params);
	        this.context.allowYield = previousAllowYield;
	        return this.finalize(node, new Node.FunctionExpression(null, params.params, method, isGenerator));
	    };
	    Parser.prototype.parsePropertyMethodAsyncFunction = function () {
	        var node = this.createNode();
	        var previousAllowYield = this.context.allowYield;
	        var previousAwait = this.context.await;
	        this.context.allowYield = false;
	        this.context.await = true;
	        var params = this.parseFormalParameters();
	        var method = this.parsePropertyMethod(params);
	        this.context.allowYield = previousAllowYield;
	        this.context.await = previousAwait;
	        return this.finalize(node, new Node.AsyncFunctionExpression(null, params.params, method));
	    };
	    Parser.prototype.parseObjectPropertyKey = function () {
	        var node = this.createNode();
	        var token = this.nextToken();
	        var key;
	        switch (token.type) {
	            case 8 /* StringLiteral */:
	            case 6 /* NumericLiteral */:
	                if (this.context.strict && token.octal) {
	                    this.tolerateUnexpectedToken(token, messages_1.Messages.StrictOctalLiteral);
	                }
	                var raw = this.getTokenRaw(token);
	                key = this.finalize(node, new Node.Literal(token.value, raw));
	                break;
	            case 3 /* Identifier */:
	            case 1 /* BooleanLiteral */:
	            case 5 /* NullLiteral */:
	            case 4 /* Keyword */:
	                key = this.finalize(node, new Node.Identifier(token.value));
	                break;
	            case 7 /* Punctuator */:
	                if (token.value === '[') {
	                    key = this.isolateCoverGrammar(this.parseAssignmentExpression);
	                    this.expect(']');
	                }
	                else {
	                    key = this.throwUnexpectedToken(token);
	                }
	                break;
	            default:
	                key = this.throwUnexpectedToken(token);
	        }
	        return key;
	    };
	    Parser.prototype.isPropertyKey = function (key, value) {
	        return (key.type === syntax_1.Syntax.Identifier && key.name === value) ||
	            (key.type === syntax_1.Syntax.Literal && key.value === value);
	    };
	    Parser.prototype.parseObjectProperty = function (hasProto) {
	        var node = this.createNode();
	        var token = this.lookahead;
	        var kind;
	        var key = null;
	        var value = null;
	        var computed = false;
	        var method = false;
	        var shorthand = false;
	        var isAsync = false;
	        if (token.type === 3 /* Identifier */) {
	            var id = token.value;
	            this.nextToken();
	            computed = this.match('[');
	            isAsync = !this.hasLineTerminator && (id === 'async') &&
	                !this.match(':') && !this.match('(') && !this.match('*') && !this.match(',');
	            key = isAsync ? this.parseObjectPropertyKey() : this.finalize(node, new Node.Identifier(id));
	        }
	        else if (this.match('*')) {
	            this.nextToken();
	        }
	        else {
	            computed = this.match('[');
	            key = this.parseObjectPropertyKey();
	        }
	        var lookaheadPropertyKey = this.qualifiedPropertyName(this.lookahead);
	        if (token.type === 3 /* Identifier */ && !isAsync && token.value === 'get' && lookaheadPropertyKey) {
	            kind = 'get';
	            computed = this.match('[');
	            key = this.parseObjectPropertyKey();
	            this.context.allowYield = false;
	            value = this.parseGetterMethod();
	        }
	        else if (token.type === 3 /* Identifier */ && !isAsync && token.value === 'set' && lookaheadPropertyKey) {
	            kind = 'set';
	            computed = this.match('[');
	            key = this.parseObjectPropertyKey();
	            value = this.parseSetterMethod();
	        }
	        else if (token.type === 7 /* Punctuator */ && token.value === '*' && lookaheadPropertyKey) {
	            kind = 'init';
	            computed = this.match('[');
	            key = this.parseObjectPropertyKey();
	            value = this.parseGeneratorMethod();
	            method = true;
	        }
	        else {
	            if (!key) {
	                this.throwUnexpectedToken(this.lookahead);
	            }
	            kind = 'init';
	            if (this.match(':') && !isAsync) {
	                if (!computed && this.isPropertyKey(key, '__proto__')) {
	                    if (hasProto.value) {
	                        this.tolerateError(messages_1.Messages.DuplicateProtoProperty);
	                    }
	                    hasProto.value = true;
	                }
	                this.nextToken();
	                value = this.inheritCoverGrammar(this.parseAssignmentExpression);
	            }
	            else if (this.match('(')) {
	                value = isAsync ? this.parsePropertyMethodAsyncFunction() : this.parsePropertyMethodFunction();
	                method = true;
	            }
	            else if (token.type === 3 /* Identifier */) {
	                var id = this.finalize(node, new Node.Identifier(token.value));
	                if (this.match('=')) {
	                    this.context.firstCoverInitializedNameError = this.lookahead;
	                    this.nextToken();
	                    shorthand = true;
	                    var init = this.isolateCoverGrammar(this.parseAssignmentExpression);
	                    value = this.finalize(node, new Node.AssignmentPattern(id, init));
	                }
	                else {
	                    shorthand = true;
	                    value = id;
	                }
	            }
	            else {
	                this.throwUnexpectedToken(this.nextToken());
	            }
	        }
	        return this.finalize(node, new Node.Property(kind, key, computed, value, method, shorthand));
	    };
	    Parser.prototype.parseObjectInitializer = function () {
	        var node = this.createNode();
	        this.expect('{');
	        var properties = [];
	        var hasProto = { value: false };
	        while (!this.match('}')) {
	            properties.push(this.parseObjectProperty(hasProto));
	            if (!this.match('}')) {
	                this.expectCommaSeparator();
	            }
	        }
	        this.expect('}');
	        return this.finalize(node, new Node.ObjectExpression(properties));
	    };
	    // https://tc39.github.io/ecma262/#sec-template-literals
	    Parser.prototype.parseTemplateHead = function () {
	        assert_1.assert(this.lookahead.head, 'Template literal must start with a template head');
	        var node = this.createNode();
	        var token = this.nextToken();
	        var raw = token.value;
	        var cooked = token.cooked;
	        return this.finalize(node, new Node.TemplateElement({ raw: raw, cooked: cooked }, token.tail));
	    };
	    Parser.prototype.parseTemplateElement = function () {
	        if (this.lookahead.type !== 10 /* Template */) {
	            this.throwUnexpectedToken();
	        }
	        var node = this.createNode();
	        var token = this.nextToken();
	        var raw = token.value;
	        var cooked = token.cooked;
	        return this.finalize(node, new Node.TemplateElement({ raw: raw, cooked: cooked }, token.tail));
	    };
	    Parser.prototype.parseTemplateLiteral = function () {
	        var node = this.createNode();
	        var expressions = [];
	        var quasis = [];
	        var quasi = this.parseTemplateHead();
	        quasis.push(quasi);
	        while (!quasi.tail) {
	            expressions.push(this.parseExpression());
	            quasi = this.parseTemplateElement();
	            quasis.push(quasi);
	        }
	        return this.finalize(node, new Node.TemplateLiteral(quasis, expressions));
	    };
	    // https://tc39.github.io/ecma262/#sec-grouping-operator
	    Parser.prototype.reinterpretExpressionAsPattern = function (expr) {
	        switch (expr.type) {
	            case syntax_1.Syntax.Identifier:
	            case syntax_1.Syntax.MemberExpression:
	            case syntax_1.Syntax.RestElement:
	            case syntax_1.Syntax.AssignmentPattern:
	                break;
	            case syntax_1.Syntax.SpreadElement:
	                expr.type = syntax_1.Syntax.RestElement;
	                this.reinterpretExpressionAsPattern(expr.argument);
	                break;
	            case syntax_1.Syntax.ArrayExpression:
	                expr.type = syntax_1.Syntax.ArrayPattern;
	                for (var i = 0; i < expr.elements.length; i++) {
	                    if (expr.elements[i] !== null) {
	                        this.reinterpretExpressionAsPattern(expr.elements[i]);
	                    }
	                }
	                break;
	            case syntax_1.Syntax.ObjectExpression:
	                expr.type = syntax_1.Syntax.ObjectPattern;
	                for (var i = 0; i < expr.properties.length; i++) {
	                    this.reinterpretExpressionAsPattern(expr.properties[i].value);
	                }
	                break;
	            case syntax_1.Syntax.AssignmentExpression:
	                expr.type = syntax_1.Syntax.AssignmentPattern;
	                delete expr.operator;
	                this.reinterpretExpressionAsPattern(expr.left);
	                break;
	            default:
	                // Allow other node type for tolerant parsing.
	                break;
	        }
	    };
	    Parser.prototype.parseGroupExpression = function () {
	        var expr;
	        this.expect('(');
	        if (this.match(')')) {
	            this.nextToken();
	            if (!this.match('=>')) {
	                this.expect('=>');
	            }
	            expr = {
	                type: ArrowParameterPlaceHolder,
	                params: [],
	                async: false
	            };
	        }
	        else {
	            var startToken = this.lookahead;
	            var params = [];
	            if (this.match('...')) {
	                expr = this.parseRestElement(params);
	                this.expect(')');
	                if (!this.match('=>')) {
	                    this.expect('=>');
	                }
	                expr = {
	                    type: ArrowParameterPlaceHolder,
	                    params: [expr],
	                    async: false
	                };
	            }
	            else {
	                var arrow = false;
	                this.context.isBindingElement = true;
	                expr = this.inheritCoverGrammar(this.parseAssignmentExpression);
	                if (this.match(',')) {
	                    var expressions = [];
	                    this.context.isAssignmentTarget = false;
	                    expressions.push(expr);
	                    while (this.lookahead.type !== 2 /* EOF */) {
	                        if (!this.match(',')) {
	                            break;
	                        }
	                        this.nextToken();
	                        if (this.match(')')) {
	                            this.nextToken();
	                            for (var i = 0; i < expressions.length; i++) {
	                                this.reinterpretExpressionAsPattern(expressions[i]);
	                            }
	                            arrow = true;
	                            expr = {
	                                type: ArrowParameterPlaceHolder,
	                                params: expressions,
	                                async: false
	                            };
	                        }
	                        else if (this.match('...')) {
	                            if (!this.context.isBindingElement) {
	                                this.throwUnexpectedToken(this.lookahead);
	                            }
	                            expressions.push(this.parseRestElement(params));
	                            this.expect(')');
	                            if (!this.match('=>')) {
	                                this.expect('=>');
	                            }
	                            this.context.isBindingElement = false;
	                            for (var i = 0; i < expressions.length; i++) {
	                                this.reinterpretExpressionAsPattern(expressions[i]);
	                            }
	                            arrow = true;
	                            expr = {
	                                type: ArrowParameterPlaceHolder,
	                                params: expressions,
	                                async: false
	                            };
	                        }
	                        else {
	                            expressions.push(this.inheritCoverGrammar(this.parseAssignmentExpression));
	                        }
	                        if (arrow) {
	                            break;
	                        }
	                    }
	                    if (!arrow) {
	                        expr = this.finalize(this.startNode(startToken), new Node.SequenceExpression(expressions));
	                    }
	                }
	                if (!arrow) {
	                    this.expect(')');
	                    if (this.match('=>')) {
	                        if (expr.type === syntax_1.Syntax.Identifier && expr.name === 'yield') {
	                            arrow = true;
	                            expr = {
	                                type: ArrowParameterPlaceHolder,
	                                params: [expr],
	                                async: false
	                            };
	                        }
	                        if (!arrow) {
	                            if (!this.context.isBindingElement) {
	                                this.throwUnexpectedToken(this.lookahead);
	                            }
	                            if (expr.type === syntax_1.Syntax.SequenceExpression) {
	                                for (var i = 0; i < expr.expressions.length; i++) {
	                                    this.reinterpretExpressionAsPattern(expr.expressions[i]);
	                                }
	                            }
	                            else {
	                                this.reinterpretExpressionAsPattern(expr);
	                            }
	                            var parameters = (expr.type === syntax_1.Syntax.SequenceExpression ? expr.expressions : [expr]);
	                            expr = {
	                                type: ArrowParameterPlaceHolder,
	                                params: parameters,
	                                async: false
	                            };
	                        }
	                    }
	                    this.context.isBindingElement = false;
	                }
	            }
	        }
	        return expr;
	    };
	    // https://tc39.github.io/ecma262/#sec-left-hand-side-expressions
	    Parser.prototype.parseArguments = function () {
	        this.expect('(');
	        var args = [];
	        if (!this.match(')')) {
	            while (true) {
	                var expr = this.match('...') ? this.parseSpreadElement() :
	                    this.isolateCoverGrammar(this.parseAssignmentExpression);
	                args.push(expr);
	                if (this.match(')')) {
	                    break;
	                }
	                this.expectCommaSeparator();
	                if (this.match(')')) {
	                    break;
	                }
	            }
	        }
	        this.expect(')');
	        return args;
	    };
	    Parser.prototype.isIdentifierName = function (token) {
	        return token.type === 3 /* Identifier */ ||
	            token.type === 4 /* Keyword */ ||
	            token.type === 1 /* BooleanLiteral */ ||
	            token.type === 5 /* NullLiteral */;
	    };
	    Parser.prototype.parseIdentifierName = function () {
	        var node = this.createNode();
	        var token = this.nextToken();
	        if (!this.isIdentifierName(token)) {
	            this.throwUnexpectedToken(token);
	        }
	        return this.finalize(node, new Node.Identifier(token.value));
	    };
	    Parser.prototype.parseNewExpression = function () {
	        var node = this.createNode();
	        var id = this.parseIdentifierName();
	        assert_1.assert(id.name === 'new', 'New expression must start with `new`');
	        var expr;
	        if (this.match('.')) {
	            this.nextToken();
	            if (this.lookahead.type === 3 /* Identifier */ && this.context.inFunctionBody && this.lookahead.value === 'target') {
	                var property = this.parseIdentifierName();
	                expr = new Node.MetaProperty(id, property);
	            }
	            else {
	                this.throwUnexpectedToken(this.lookahead);
	            }
	        }
	        else {
	            var callee = this.isolateCoverGrammar(this.parseLeftHandSideExpression);
	            var args = this.match('(') ? this.parseArguments() : [];
	            expr = new Node.NewExpression(callee, args);
	            this.context.isAssignmentTarget = false;
	            this.context.isBindingElement = false;
	        }
	        return this.finalize(node, expr);
	    };
	    Parser.prototype.parseAsyncArgument = function () {
	        var arg = this.parseAssignmentExpression();
	        this.context.firstCoverInitializedNameError = null;
	        return arg;
	    };
	    Parser.prototype.parseAsyncArguments = function () {
	        this.expect('(');
	        var args = [];
	        if (!this.match(')')) {
	            while (true) {
	                var expr = this.match('...') ? this.parseSpreadElement() :
	                    this.isolateCoverGrammar(this.parseAsyncArgument);
	                args.push(expr);
	                if (this.match(')')) {
	                    break;
	                }
	                this.expectCommaSeparator();
	                if (this.match(')')) {
	                    break;
	                }
	            }
	        }
	        this.expect(')');
	        return args;
	    };
	    Parser.prototype.parseLeftHandSideExpressionAllowCall = function () {
	        var startToken = this.lookahead;
	        var maybeAsync = this.matchContextualKeyword('async');
	        var previousAllowIn = this.context.allowIn;
	        this.context.allowIn = true;
	        var expr;
	        if (this.matchKeyword('super') && this.context.inFunctionBody) {
	            expr = this.createNode();
	            this.nextToken();
	            expr = this.finalize(expr, new Node.Super());
	            if (!this.match('(') && !this.match('.') && !this.match('[')) {
	                this.throwUnexpectedToken(this.lookahead);
	            }
	        }
	        else {
	            expr = this.inheritCoverGrammar(this.matchKeyword('new') ? this.parseNewExpression : this.parsePrimaryExpression);
	        }
	        while (true) {
	            if (this.match('.')) {
	                this.context.isBindingElement = false;
	                this.context.isAssignmentTarget = true;
	                this.expect('.');
	                var property = this.parseIdentifierName();
	                expr = this.finalize(this.startNode(startToken), new Node.StaticMemberExpression(expr, property));
	            }
	            else if (this.match('(')) {
	                var asyncArrow = maybeAsync && (startToken.lineNumber === this.lookahead.lineNumber);
	                this.context.isBindingElement = false;
	                this.context.isAssignmentTarget = false;
	                var args = asyncArrow ? this.parseAsyncArguments() : this.parseArguments();
	                expr = this.finalize(this.startNode(startToken), new Node.CallExpression(expr, args));
	                if (asyncArrow && this.match('=>')) {
	                    for (var i = 0; i < args.length; ++i) {
	                        this.reinterpretExpressionAsPattern(args[i]);
	                    }
	                    expr = {
	                        type: ArrowParameterPlaceHolder,
	                        params: args,
	                        async: true
	                    };
	                }
	            }
	            else if (this.match('[')) {
	                this.context.isBindingElement = false;
	                this.context.isAssignmentTarget = true;
	                this.expect('[');
	                var property = this.isolateCoverGrammar(this.parseExpression);
	                this.expect(']');
	                expr = this.finalize(this.startNode(startToken), new Node.ComputedMemberExpression(expr, property));
	            }
	            else if (this.lookahead.type === 10 /* Template */ && this.lookahead.head) {
	                var quasi = this.parseTemplateLiteral();
	                expr = this.finalize(this.startNode(startToken), new Node.TaggedTemplateExpression(expr, quasi));
	            }
	            else {
	                break;
	            }
	        }
	        this.context.allowIn = previousAllowIn;
	        return expr;
	    };
	    Parser.prototype.parseSuper = function () {
	        var node = this.createNode();
	        this.expectKeyword('super');
	        if (!this.match('[') && !this.match('.')) {
	            this.throwUnexpectedToken(this.lookahead);
	        }
	        return this.finalize(node, new Node.Super());
	    };
	    Parser.prototype.parseLeftHandSideExpression = function () {
	        assert_1.assert(this.context.allowIn, 'callee of new expression always allow in keyword.');
	        var node = this.startNode(this.lookahead);
	        var expr = (this.matchKeyword('super') && this.context.inFunctionBody) ? this.parseSuper() :
	            this.inheritCoverGrammar(this.matchKeyword('new') ? this.parseNewExpression : this.parsePrimaryExpression);
	        while (true) {
	            if (this.match('[')) {
	                this.context.isBindingElement = false;
	                this.context.isAssignmentTarget = true;
	                this.expect('[');
	                var property = this.isolateCoverGrammar(this.parseExpression);
	                this.expect(']');
	                expr = this.finalize(node, new Node.ComputedMemberExpression(expr, property));
	            }
	            else if (this.match('.')) {
	                this.context.isBindingElement = false;
	                this.context.isAssignmentTarget = true;
	                this.expect('.');
	                var property = this.parseIdentifierName();
	                expr = this.finalize(node, new Node.StaticMemberExpression(expr, property));
	            }
	            else if (this.lookahead.type === 10 /* Template */ && this.lookahead.head) {
	                var quasi = this.parseTemplateLiteral();
	                expr = this.finalize(node, new Node.TaggedTemplateExpression(expr, quasi));
	            }
	            else {
	                break;
	            }
	        }
	        return expr;
	    };
	    // https://tc39.github.io/ecma262/#sec-update-expressions
	    Parser.prototype.parseUpdateExpression = function () {
	        var expr;
	        var startToken = this.lookahead;
	        if (this.match('++') || this.match('--')) {
	            var node = this.startNode(startToken);
	            var token = this.nextToken();
	            expr = this.inheritCoverGrammar(this.parseUnaryExpression);
	            if (this.context.strict && expr.type === syntax_1.Syntax.Identifier && this.scanner.isRestrictedWord(expr.name)) {
	                this.tolerateError(messages_1.Messages.StrictLHSPrefix);
	            }
	            if (!this.context.isAssignmentTarget) {
	                this.tolerateError(messages_1.Messages.InvalidLHSInAssignment);
	            }
	            var prefix = true;
	            expr = this.finalize(node, new Node.UpdateExpression(token.value, expr, prefix));
	            this.context.isAssignmentTarget = false;
	            this.context.isBindingElement = false;
	        }
	        else {
	            expr = this.inheritCoverGrammar(this.parseLeftHandSideExpressionAllowCall);
	            if (!this.hasLineTerminator && this.lookahead.type === 7 /* Punctuator */) {
	                if (this.match('++') || this.match('--')) {
	                    if (this.context.strict && expr.type === syntax_1.Syntax.Identifier && this.scanner.isRestrictedWord(expr.name)) {
	                        this.tolerateError(messages_1.Messages.StrictLHSPostfix);
	                    }
	                    if (!this.context.isAssignmentTarget) {
	                        this.tolerateError(messages_1.Messages.InvalidLHSInAssignment);
	                    }
	                    this.context.isAssignmentTarget = false;
	                    this.context.isBindingElement = false;
	                    var operator = this.nextToken().value;
	                    var prefix = false;
	                    expr = this.finalize(this.startNode(startToken), new Node.UpdateExpression(operator, expr, prefix));
	                }
	            }
	        }
	        return expr;
	    };
	    // https://tc39.github.io/ecma262/#sec-unary-operators
	    Parser.prototype.parseAwaitExpression = function () {
	        var node = this.createNode();
	        this.nextToken();
	        var argument = this.parseUnaryExpression();
	        return this.finalize(node, new Node.AwaitExpression(argument));
	    };
	    Parser.prototype.parseUnaryExpression = function () {
	        var expr;
	        if (this.match('+') || this.match('-') || this.match('~') || this.match('!') ||
	            this.matchKeyword('delete') || this.matchKeyword('void') || this.matchKeyword('typeof')) {
	            var node = this.startNode(this.lookahead);
	            var token = this.nextToken();
	            expr = this.inheritCoverGrammar(this.parseUnaryExpression);
	            expr = this.finalize(node, new Node.UnaryExpression(token.value, expr));
	            if (this.context.strict && expr.operator === 'delete' && expr.argument.type === syntax_1.Syntax.Identifier) {
	                this.tolerateError(messages_1.Messages.StrictDelete);
	            }
	            this.context.isAssignmentTarget = false;
	            this.context.isBindingElement = false;
	        }
	        else if (this.context.await && this.matchContextualKeyword('await')) {
	            expr = this.parseAwaitExpression();
	        }
	        else {
	            expr = this.parseUpdateExpression();
	        }
	        return expr;
	    };
	    Parser.prototype.parseExponentiationExpression = function () {
	        var startToken = this.lookahead;
	        var expr = this.inheritCoverGrammar(this.parseUnaryExpression);
	        if (expr.type !== syntax_1.Syntax.UnaryExpression && this.match('**')) {
	            this.nextToken();
	            this.context.isAssignmentTarget = false;
	            this.context.isBindingElement = false;
	            var left = expr;
	            var right = this.isolateCoverGrammar(this.parseExponentiationExpression);
	            expr = this.finalize(this.startNode(startToken), new Node.BinaryExpression('**', left, right));
	        }
	        return expr;
	    };
	    // https://tc39.github.io/ecma262/#sec-exp-operator
	    // https://tc39.github.io/ecma262/#sec-multiplicative-operators
	    // https://tc39.github.io/ecma262/#sec-additive-operators
	    // https://tc39.github.io/ecma262/#sec-bitwise-shift-operators
	    // https://tc39.github.io/ecma262/#sec-relational-operators
	    // https://tc39.github.io/ecma262/#sec-equality-operators
	    // https://tc39.github.io/ecma262/#sec-binary-bitwise-operators
	    // https://tc39.github.io/ecma262/#sec-binary-logical-operators
	    Parser.prototype.binaryPrecedence = function (token) {
	        var op = token.value;
	        var precedence;
	        if (token.type === 7 /* Punctuator */) {
	            precedence = this.operatorPrecedence[op] || 0;
	        }
	        else if (token.type === 4 /* Keyword */) {
	            precedence = (op === 'instanceof' || (this.context.allowIn && op === 'in')) ? 7 : 0;
	        }
	        else {
	            precedence = 0;
	        }
	        return precedence;
	    };
	    Parser.prototype.parseBinaryExpression = function () {
	        var startToken = this.lookahead;
	        var expr = this.inheritCoverGrammar(this.parseExponentiationExpression);
	        var token = this.lookahead;
	        var prec = this.binaryPrecedence(token);
	        if (prec > 0) {
	            this.nextToken();
	            this.context.isAssignmentTarget = false;
	            this.context.isBindingElement = false;
	            var markers = [startToken, this.lookahead];
	            var left = expr;
	            var right = this.isolateCoverGrammar(this.parseExponentiationExpression);
	            var stack = [left, token.value, right];
	            var precedences = [prec];
	            while (true) {
	                prec = this.binaryPrecedence(this.lookahead);
	                if (prec <= 0) {
	                    break;
	                }
	                // Reduce: make a binary expression from the three topmost entries.
	                while ((stack.length > 2) && (prec <= precedences[precedences.length - 1])) {
	                    right = stack.pop();
	                    var operator = stack.pop();
	                    precedences.pop();
	                    left = stack.pop();
	                    markers.pop();
	                    var node = this.startNode(markers[markers.length - 1]);
	                    stack.push(this.finalize(node, new Node.BinaryExpression(operator, left, right)));
	                }
	                // Shift.
	                stack.push(this.nextToken().value);
	                precedences.push(prec);
	                markers.push(this.lookahead);
	                stack.push(this.isolateCoverGrammar(this.parseExponentiationExpression));
	            }
	            // Final reduce to clean-up the stack.
	            var i = stack.length - 1;
	            expr = stack[i];
	            var lastMarker = markers.pop();
	            while (i > 1) {
	                var marker = markers.pop();
	                var lastLineStart = lastMarker && lastMarker.lineStart;
	                var node = this.startNode(marker, lastLineStart);
	                var operator = stack[i - 1];
	                expr = this.finalize(node, new Node.BinaryExpression(operator, stack[i - 2], expr));
	                i -= 2;
	                lastMarker = marker;
	            }
	        }
	        return expr;
	    };
	    // https://tc39.github.io/ecma262/#sec-conditional-operator
	    Parser.prototype.parseConditionalExpression = function () {
	        var startToken = this.lookahead;
	        var expr = this.inheritCoverGrammar(this.parseBinaryExpression);
	        if (this.match('?')) {
	            this.nextToken();
	            var previousAllowIn = this.context.allowIn;
	            this.context.allowIn = true;
	            var consequent = this.isolateCoverGrammar(this.parseAssignmentExpression);
	            this.context.allowIn = previousAllowIn;
	            this.expect(':');
	            var alternate = this.isolateCoverGrammar(this.parseAssignmentExpression);
	            expr = this.finalize(this.startNode(startToken), new Node.ConditionalExpression(expr, consequent, alternate));
	            this.context.isAssignmentTarget = false;
	            this.context.isBindingElement = false;
	        }
	        return expr;
	    };
	    // https://tc39.github.io/ecma262/#sec-assignment-operators
	    Parser.prototype.checkPatternParam = function (options, param) {
	        switch (param.type) {
	            case syntax_1.Syntax.Identifier:
	                this.validateParam(options, param, param.name);
	                break;
	            case syntax_1.Syntax.RestElement:
	                this.checkPatternParam(options, param.argument);
	                break;
	            case syntax_1.Syntax.AssignmentPattern:
	                this.checkPatternParam(options, param.left);
	                break;
	            case syntax_1.Syntax.ArrayPattern:
	                for (var i = 0; i < param.elements.length; i++) {
	                    if (param.elements[i] !== null) {
	                        this.checkPatternParam(options, param.elements[i]);
	                    }
	                }
	                break;
	            case syntax_1.Syntax.ObjectPattern:
	                for (var i = 0; i < param.properties.length; i++) {
	                    this.checkPatternParam(options, param.properties[i].value);
	                }
	                break;
	            default:
	                break;
	        }
	        options.simple = options.simple && (param instanceof Node.Identifier);
	    };
	    Parser.prototype.reinterpretAsCoverFormalsList = function (expr) {
	        var params = [expr];
	        var options;
	        var asyncArrow = false;
	        switch (expr.type) {
	            case syntax_1.Syntax.Identifier:
	                break;
	            case ArrowParameterPlaceHolder:
	                params = expr.params;
	                asyncArrow = expr.async;
	                break;
	            default:
	                return null;
	        }
	        options = {
	            simple: true,
	            paramSet: {}
	        };
	        for (var i = 0; i < params.length; ++i) {
	            var param = params[i];
	            if (param.type === syntax_1.Syntax.AssignmentPattern) {
	                if (param.right.type === syntax_1.Syntax.YieldExpression) {
	                    if (param.right.argument) {
	                        this.throwUnexpectedToken(this.lookahead);
	                    }
	                    param.right.type = syntax_1.Syntax.Identifier;
	                    param.right.name = 'yield';
	                    delete param.right.argument;
	                    delete param.right.delegate;
	                }
	            }
	            else if (asyncArrow && param.type === syntax_1.Syntax.Identifier && param.name === 'await') {
	                this.throwUnexpectedToken(this.lookahead);
	            }
	            this.checkPatternParam(options, param);
	            params[i] = param;
	        }
	        if (this.context.strict || !this.context.allowYield) {
	            for (var i = 0; i < params.length; ++i) {
	                var param = params[i];
	                if (param.type === syntax_1.Syntax.YieldExpression) {
	                    this.throwUnexpectedToken(this.lookahead);
	                }
	            }
	        }
	        if (options.message === messages_1.Messages.StrictParamDupe) {
	            var token = this.context.strict ? options.stricted : options.firstRestricted;
	            this.throwUnexpectedToken(token, options.message);
	        }
	        return {
	            simple: options.simple,
	            params: params,
	            stricted: options.stricted,
	            firstRestricted: options.firstRestricted,
	            message: options.message
	        };
	    };
	    Parser.prototype.parseAssignmentExpression = function () {
	        var expr;
	        if (!this.context.allowYield && this.matchKeyword('yield')) {
	            expr = this.parseYieldExpression();
	        }
	        else {
	            var startToken = this.lookahead;
	            var token = startToken;
	            expr = this.parseConditionalExpression();
	            if (token.type === 3 /* Identifier */ && (token.lineNumber === this.lookahead.lineNumber) && token.value === 'async') {
	                if (this.lookahead.type === 3 /* Identifier */ || this.matchKeyword('yield')) {
	                    var arg = this.parsePrimaryExpression();
	                    this.reinterpretExpressionAsPattern(arg);
	                    expr = {
	                        type: ArrowParameterPlaceHolder,
	                        params: [arg],
	                        async: true
	                    };
	                }
	            }
	            if (expr.type === ArrowParameterPlaceHolder || this.match('=>')) {
	                // https://tc39.github.io/ecma262/#sec-arrow-function-definitions
	                this.context.isAssignmentTarget = false;
	                this.context.isBindingElement = false;
	                var isAsync = expr.async;
	                var list = this.reinterpretAsCoverFormalsList(expr);
	                if (list) {
	                    if (this.hasLineTerminator) {
	                        this.tolerateUnexpectedToken(this.lookahead);
	                    }
	                    this.context.firstCoverInitializedNameError = null;
	                    var previousStrict = this.context.strict;
	                    var previousAllowStrictDirective = this.context.allowStrictDirective;
	                    this.context.allowStrictDirective = list.simple;
	                    var previousAllowYield = this.context.allowYield;
	                    var previousAwait = this.context.await;
	                    this.context.allowYield = true;
	                    this.context.await = isAsync;
	                    var node = this.startNode(startToken);
	                    this.expect('=>');
	                    var body = void 0;
	                    if (this.match('{')) {
	                        var previousAllowIn = this.context.allowIn;
	                        this.context.allowIn = true;
	                        body = this.parseFunctionSourceElements();
	                        this.context.allowIn = previousAllowIn;
	                    }
	                    else {
	                        body = this.isolateCoverGrammar(this.parseAssignmentExpression);
	                    }
	                    var expression = body.type !== syntax_1.Syntax.BlockStatement;
	                    if (this.context.strict && list.firstRestricted) {
	                        this.throwUnexpectedToken(list.firstRestricted, list.message);
	                    }
	                    if (this.context.strict && list.stricted) {
	                        this.tolerateUnexpectedToken(list.stricted, list.message);
	                    }
	                    expr = isAsync ? this.finalize(node, new Node.AsyncArrowFunctionExpression(list.params, body, expression)) :
	                        this.finalize(node, new Node.ArrowFunctionExpression(list.params, body, expression));
	                    this.context.strict = previousStrict;
	                    this.context.allowStrictDirective = previousAllowStrictDirective;
	                    this.context.allowYield = previousAllowYield;
	                    this.context.await = previousAwait;
	                }
	            }
	            else {
	                if (this.matchAssign()) {
	                    if (!this.context.isAssignmentTarget) {
	                        this.tolerateError(messages_1.Messages.InvalidLHSInAssignment);
	                    }
	                    if (this.context.strict && expr.type === syntax_1.Syntax.Identifier) {
	                        var id = expr;
	                        if (this.scanner.isRestrictedWord(id.name)) {
	                            this.tolerateUnexpectedToken(token, messages_1.Messages.StrictLHSAssignment);
	                        }
	                        if (this.scanner.isStrictModeReservedWord(id.name)) {
	                            this.tolerateUnexpectedToken(token, messages_1.Messages.StrictReservedWord);
	                        }
	                    }
	                    if (!this.match('=')) {
	                        this.context.isAssignmentTarget = false;
	                        this.context.isBindingElement = false;
	                    }
	                    else {
	                        this.reinterpretExpressionAsPattern(expr);
	                    }
	                    token = this.nextToken();
	                    var operator = token.value;
	                    var right = this.isolateCoverGrammar(this.parseAssignmentExpression);
	                    expr = this.finalize(this.startNode(startToken), new Node.AssignmentExpression(operator, expr, right));
	                    this.context.firstCoverInitializedNameError = null;
	                }
	            }
	        }
	        return expr;
	    };
	    // https://tc39.github.io/ecma262/#sec-comma-operator
	    Parser.prototype.parseExpression = function () {
	        var startToken = this.lookahead;
	        var expr = this.isolateCoverGrammar(this.parseAssignmentExpression);
	        if (this.match(',')) {
	            var expressions = [];
	            expressions.push(expr);
	            while (this.lookahead.type !== 2 /* EOF */) {
	                if (!this.match(',')) {
	                    break;
	                }
	                this.nextToken();
	                expressions.push(this.isolateCoverGrammar(this.parseAssignmentExpression));
	            }
	            expr = this.finalize(this.startNode(startToken), new Node.SequenceExpression(expressions));
	        }
	        return expr;
	    };
	    // https://tc39.github.io/ecma262/#sec-block
	    Parser.prototype.parseStatementListItem = function () {
	        var statement;
	        this.context.isAssignmentTarget = true;
	        this.context.isBindingElement = true;
	        if (this.lookahead.type === 4 /* Keyword */) {
	            switch (this.lookahead.value) {
	                case 'export':
	                    if (!this.context.isModule) {
	                        this.tolerateUnexpectedToken(this.lookahead, messages_1.Messages.IllegalExportDeclaration);
	                    }
	                    statement = this.parseExportDeclaration();
	                    break;
	                case 'import':
	                    if (!this.context.isModule) {
	                        this.tolerateUnexpectedToken(this.lookahead, messages_1.Messages.IllegalImportDeclaration);
	                    }
	                    statement = this.parseImportDeclaration();
	                    break;
	                case 'const':
	                    statement = this.parseLexicalDeclaration({ inFor: false });
	                    break;
	                case 'function':
	                    statement = this.parseFunctionDeclaration();
	                    break;
	                case 'class':
	                    statement = this.parseClassDeclaration();
	                    break;
	                case 'let':
	                    statement = this.isLexicalDeclaration() ? this.parseLexicalDeclaration({ inFor: false }) : this.parseStatement();
	                    break;
	                default:
	                    statement = this.parseStatement();
	                    break;
	            }
	        }
	        else {
	            statement = this.parseStatement();
	        }
	        return statement;
	    };
	    Parser.prototype.parseBlock = function () {
	        var node = this.createNode();
	        this.expect('{');
	        var block = [];
	        while (true) {
	            if (this.match('}')) {
	                break;
	            }
	            block.push(this.parseStatementListItem());
	        }
	        this.expect('}');
	        return this.finalize(node, new Node.BlockStatement(block));
	    };
	    // https://tc39.github.io/ecma262/#sec-let-and-const-declarations
	    Parser.prototype.parseLexicalBinding = function (kind, options) {
	        var node = this.createNode();
	        var params = [];
	        var id = this.parsePattern(params, kind);
	        if (this.context.strict && id.type === syntax_1.Syntax.Identifier) {
	            if (this.scanner.isRestrictedWord(id.name)) {
	                this.tolerateError(messages_1.Messages.StrictVarName);
	            }
	        }
	        var init = null;
	        if (kind === 'const') {
	            if (!this.matchKeyword('in') && !this.matchContextualKeyword('of')) {
	                if (this.match('=')) {
	                    this.nextToken();
	                    init = this.isolateCoverGrammar(this.parseAssignmentExpression);
	                }
	                else {
	                    this.throwError(messages_1.Messages.DeclarationMissingInitializer, 'const');
	                }
	            }
	        }
	        else if ((!options.inFor && id.type !== syntax_1.Syntax.Identifier) || this.match('=')) {
	            this.expect('=');
	            init = this.isolateCoverGrammar(this.parseAssignmentExpression);
	        }
	        return this.finalize(node, new Node.VariableDeclarator(id, init));
	    };
	    Parser.prototype.parseBindingList = function (kind, options) {
	        var list = [this.parseLexicalBinding(kind, options)];
	        while (this.match(',')) {
	            this.nextToken();
	            list.push(this.parseLexicalBinding(kind, options));
	        }
	        return list;
	    };
	    Parser.prototype.isLexicalDeclaration = function () {
	        var state = this.scanner.saveState();
	        this.scanner.scanComments();
	        var next = this.scanner.lex();
	        this.scanner.restoreState(state);
	        return (next.type === 3 /* Identifier */) ||
	            (next.type === 7 /* Punctuator */ && next.value === '[') ||
	            (next.type === 7 /* Punctuator */ && next.value === '{') ||
	            (next.type === 4 /* Keyword */ && next.value === 'let') ||
	            (next.type === 4 /* Keyword */ && next.value === 'yield');
	    };
	    Parser.prototype.parseLexicalDeclaration = function (options) {
	        var node = this.createNode();
	        var kind = this.nextToken().value;
	        assert_1.assert(kind === 'let' || kind === 'const', 'Lexical declaration must be either let or const');
	        var declarations = this.parseBindingList(kind, options);
	        this.consumeSemicolon();
	        return this.finalize(node, new Node.VariableDeclaration(declarations, kind));
	    };
	    // https://tc39.github.io/ecma262/#sec-destructuring-binding-patterns
	    Parser.prototype.parseBindingRestElement = function (params, kind) {
	        var node = this.createNode();
	        this.expect('...');
	        var arg = this.parsePattern(params, kind);
	        return this.finalize(node, new Node.RestElement(arg));
	    };
	    Parser.prototype.parseArrayPattern = function (params, kind) {
	        var node = this.createNode();
	        this.expect('[');
	        var elements = [];
	        while (!this.match(']')) {
	            if (this.match(',')) {
	                this.nextToken();
	                elements.push(null);
	            }
	            else {
	                if (this.match('...')) {
	                    elements.push(this.parseBindingRestElement(params, kind));
	                    break;
	                }
	                else {
	                    elements.push(this.parsePatternWithDefault(params, kind));
	                }
	                if (!this.match(']')) {
	                    this.expect(',');
	                }
	            }
	        }
	        this.expect(']');
	        return this.finalize(node, new Node.ArrayPattern(elements));
	    };
	    Parser.prototype.parsePropertyPattern = function (params, kind) {
	        var node = this.createNode();
	        var computed = false;
	        var shorthand = false;
	        var method = false;
	        var key;
	        var value;
	        if (this.lookahead.type === 3 /* Identifier */) {
	            var keyToken = this.lookahead;
	            key = this.parseVariableIdentifier();
	            var init = this.finalize(node, new Node.Identifier(keyToken.value));
	            if (this.match('=')) {
	                params.push(keyToken);
	                shorthand = true;
	                this.nextToken();
	                var expr = this.parseAssignmentExpression();
	                value = this.finalize(this.startNode(keyToken), new Node.AssignmentPattern(init, expr));
	            }
	            else if (!this.match(':')) {
	                params.push(keyToken);
	                shorthand = true;
	                value = init;
	            }
	            else {
	                this.expect(':');
	                value = this.parsePatternWithDefault(params, kind);
	            }
	        }
	        else {
	            computed = this.match('[');
	            key = this.parseObjectPropertyKey();
	            this.expect(':');
	            value = this.parsePatternWithDefault(params, kind);
	        }
	        return this.finalize(node, new Node.Property('init', key, computed, value, method, shorthand));
	    };
	    Parser.prototype.parseObjectPattern = function (params, kind) {
	        var node = this.createNode();
	        var properties = [];
	        this.expect('{');
	        while (!this.match('}')) {
	            properties.push(this.parsePropertyPattern(params, kind));
	            if (!this.match('}')) {
	                this.expect(',');
	            }
	        }
	        this.expect('}');
	        return this.finalize(node, new Node.ObjectPattern(properties));
	    };
	    Parser.prototype.parsePattern = function (params, kind) {
	        var pattern;
	        if (this.match('[')) {
	            pattern = this.parseArrayPattern(params, kind);
	        }
	        else if (this.match('{')) {
	            pattern = this.parseObjectPattern(params, kind);
	        }
	        else {
	            if (this.matchKeyword('let') && (kind === 'const' || kind === 'let')) {
	                this.tolerateUnexpectedToken(this.lookahead, messages_1.Messages.LetInLexicalBinding);
	            }
	            params.push(this.lookahead);
	            pattern = this.parseVariableIdentifier(kind);
	        }
	        return pattern;
	    };
	    Parser.prototype.parsePatternWithDefault = function (params, kind) {
	        var startToken = this.lookahead;
	        var pattern = this.parsePattern(params, kind);
	        if (this.match('=')) {
	            this.nextToken();
	            var previousAllowYield = this.context.allowYield;
	            this.context.allowYield = true;
	            var right = this.isolateCoverGrammar(this.parseAssignmentExpression);
	            this.context.allowYield = previousAllowYield;
	            pattern = this.finalize(this.startNode(startToken), new Node.AssignmentPattern(pattern, right));
	        }
	        return pattern;
	    };
	    // https://tc39.github.io/ecma262/#sec-variable-statement
	    Parser.prototype.parseVariableIdentifier = function (kind) {
	        var node = this.createNode();
	        var token = this.nextToken();
	        if (token.type === 4 /* Keyword */ && token.value === 'yield') {
	            if (this.context.strict) {
	                this.tolerateUnexpectedToken(token, messages_1.Messages.StrictReservedWord);
	            }
	            else if (!this.context.allowYield) {
	                this.throwUnexpectedToken(token);
	            }
	        }
	        else if (token.type !== 3 /* Identifier */) {
	            if (this.context.strict && token.type === 4 /* Keyword */ && this.scanner.isStrictModeReservedWord(token.value)) {
	                this.tolerateUnexpectedToken(token, messages_1.Messages.StrictReservedWord);
	            }
	            else {
	                if (this.context.strict || token.value !== 'let' || kind !== 'var') {
	                    this.throwUnexpectedToken(token);
	                }
	            }
	        }
	        else if ((this.context.isModule || this.context.await) && token.type === 3 /* Identifier */ && token.value === 'await') {
	            this.tolerateUnexpectedToken(token);
	        }
	        return this.finalize(node, new Node.Identifier(token.value));
	    };
	    Parser.prototype.parseVariableDeclaration = function (options) {
	        var node = this.createNode();
	        var params = [];
	        var id = this.parsePattern(params, 'var');
	        if (this.context.strict && id.type === syntax_1.Syntax.Identifier) {
	            if (this.scanner.isRestrictedWord(id.name)) {
	                this.tolerateError(messages_1.Messages.StrictVarName);
	            }
	        }
	        var init = null;
	        if (this.match('=')) {
	            this.nextToken();
	            init = this.isolateCoverGrammar(this.parseAssignmentExpression);
	        }
	        else if (id.type !== syntax_1.Syntax.Identifier && !options.inFor) {
	            this.expect('=');
	        }
	        return this.finalize(node, new Node.VariableDeclarator(id, init));
	    };
	    Parser.prototype.parseVariableDeclarationList = function (options) {
	        var opt = { inFor: options.inFor };
	        var list = [];
	        list.push(this.parseVariableDeclaration(opt));
	        while (this.match(',')) {
	            this.nextToken();
	            list.push(this.parseVariableDeclaration(opt));
	        }
	        return list;
	    };
	    Parser.prototype.parseVariableStatement = function () {
	        var node = this.createNode();
	        this.expectKeyword('var');
	        var declarations = this.parseVariableDeclarationList({ inFor: false });
	        this.consumeSemicolon();
	        return this.finalize(node, new Node.VariableDeclaration(declarations, 'var'));
	    };
	    // https://tc39.github.io/ecma262/#sec-empty-statement
	    Parser.prototype.parseEmptyStatement = function () {
	        var node = this.createNode();
	        this.expect(';');
	        return this.finalize(node, new Node.EmptyStatement());
	    };
	    // https://tc39.github.io/ecma262/#sec-expression-statement
	    Parser.prototype.parseExpressionStatement = function () {
	        var node = this.createNode();
	        var expr = this.parseExpression();
	        this.consumeSemicolon();
	        return this.finalize(node, new Node.ExpressionStatement(expr));
	    };
	    // https://tc39.github.io/ecma262/#sec-if-statement
	    Parser.prototype.parseIfClause = function () {
	        if (this.context.strict && this.matchKeyword('function')) {
	            this.tolerateError(messages_1.Messages.StrictFunction);
	        }
	        return this.parseStatement();
	    };
	    Parser.prototype.parseIfStatement = function () {
	        var node = this.createNode();
	        var consequent;
	        var alternate = null;
	        this.expectKeyword('if');
	        this.expect('(');
	        var test = this.parseExpression();
	        if (!this.match(')') && this.config.tolerant) {
	            this.tolerateUnexpectedToken(this.nextToken());
	            consequent = this.finalize(this.createNode(), new Node.EmptyStatement());
	        }
	        else {
	            this.expect(')');
	            consequent = this.parseIfClause();
	            if (this.matchKeyword('else')) {
	                this.nextToken();
	                alternate = this.parseIfClause();
	            }
	        }
	        return this.finalize(node, new Node.IfStatement(test, consequent, alternate));
	    };
	    // https://tc39.github.io/ecma262/#sec-do-while-statement
	    Parser.prototype.parseDoWhileStatement = function () {
	        var node = this.createNode();
	        this.expectKeyword('do');
	        var previousInIteration = this.context.inIteration;
	        this.context.inIteration = true;
	        var body = this.parseStatement();
	        this.context.inIteration = previousInIteration;
	        this.expectKeyword('while');
	        this.expect('(');
	        var test = this.parseExpression();
	        if (!this.match(')') && this.config.tolerant) {
	            this.tolerateUnexpectedToken(this.nextToken());
	        }
	        else {
	            this.expect(')');
	            if (this.match(';')) {
	                this.nextToken();
	            }
	        }
	        return this.finalize(node, new Node.DoWhileStatement(body, test));
	    };
	    // https://tc39.github.io/ecma262/#sec-while-statement
	    Parser.prototype.parseWhileStatement = function () {
	        var node = this.createNode();
	        var body;
	        this.expectKeyword('while');
	        this.expect('(');
	        var test = this.parseExpression();
	        if (!this.match(')') && this.config.tolerant) {
	            this.tolerateUnexpectedToken(this.nextToken());
	            body = this.finalize(this.createNode(), new Node.EmptyStatement());
	        }
	        else {
	            this.expect(')');
	            var previousInIteration = this.context.inIteration;
	            this.context.inIteration = true;
	            body = this.parseStatement();
	            this.context.inIteration = previousInIteration;
	        }
	        return this.finalize(node, new Node.WhileStatement(test, body));
	    };
	    // https://tc39.github.io/ecma262/#sec-for-statement
	    // https://tc39.github.io/ecma262/#sec-for-in-and-for-of-statements
	    Parser.prototype.parseForStatement = function () {
	        var init = null;
	        var test = null;
	        var update = null;
	        var forIn = true;
	        var left, right;
	        var node = this.createNode();
	        this.expectKeyword('for');
	        this.expect('(');
	        if (this.match(';')) {
	            this.nextToken();
	        }
	        else {
	            if (this.matchKeyword('var')) {
	                init = this.createNode();
	                this.nextToken();
	                var previousAllowIn = this.context.allowIn;
	                this.context.allowIn = false;
	                var declarations = this.parseVariableDeclarationList({ inFor: true });
	                this.context.allowIn = previousAllowIn;
	                if (declarations.length === 1 && this.matchKeyword('in')) {
	                    var decl = declarations[0];
	                    if (decl.init && (decl.id.type === syntax_1.Syntax.ArrayPattern || decl.id.type === syntax_1.Syntax.ObjectPattern || this.context.strict)) {
	                        this.tolerateError(messages_1.Messages.ForInOfLoopInitializer, 'for-in');
	                    }
	                    init = this.finalize(init, new Node.VariableDeclaration(declarations, 'var'));
	                    this.nextToken();
	                    left = init;
	                    right = this.parseExpression();
	                    init = null;
	                }
	                else if (declarations.length === 1 && declarations[0].init === null && this.matchContextualKeyword('of')) {
	                    init = this.finalize(init, new Node.VariableDeclaration(declarations, 'var'));
	                    this.nextToken();
	                    left = init;
	                    right = this.parseAssignmentExpression();
	                    init = null;
	                    forIn = false;
	                }
	                else {
	                    init = this.finalize(init, new Node.VariableDeclaration(declarations, 'var'));
	                    this.expect(';');
	                }
	            }
	            else if (this.matchKeyword('const') || this.matchKeyword('let')) {
	                init = this.createNode();
	                var kind = this.nextToken().value;
	                if (!this.context.strict && this.lookahead.value === 'in') {
	                    init = this.finalize(init, new Node.Identifier(kind));
	                    this.nextToken();
	                    left = init;
	                    right = this.parseExpression();
	                    init = null;
	                }
	                else {
	                    var previousAllowIn = this.context.allowIn;
	                    this.context.allowIn = false;
	                    var declarations = this.parseBindingList(kind, { inFor: true });
	                    this.context.allowIn = previousAllowIn;
	                    if (declarations.length === 1 && declarations[0].init === null && this.matchKeyword('in')) {
	                        init = this.finalize(init, new Node.VariableDeclaration(declarations, kind));
	                        this.nextToken();
	                        left = init;
	                        right = this.parseExpression();
	                        init = null;
	                    }
	                    else if (declarations.length === 1 && declarations[0].init === null && this.matchContextualKeyword('of')) {
	                        init = this.finalize(init, new Node.VariableDeclaration(declarations, kind));
	                        this.nextToken();
	                        left = init;
	                        right = this.parseAssignmentExpression();
	                        init = null;
	                        forIn = false;
	                    }
	                    else {
	                        this.consumeSemicolon();
	                        init = this.finalize(init, new Node.VariableDeclaration(declarations, kind));
	                    }
	                }
	            }
	            else {
	                var initStartToken = this.lookahead;
	                var previousAllowIn = this.context.allowIn;
	                this.context.allowIn = false;
	                init = this.inheritCoverGrammar(this.parseAssignmentExpression);
	                this.context.allowIn = previousAllowIn;
	                if (this.matchKeyword('in')) {
	                    if (!this.context.isAssignmentTarget || init.type === syntax_1.Syntax.AssignmentExpression) {
	                        this.tolerateError(messages_1.Messages.InvalidLHSInForIn);
	                    }
	                    this.nextToken();
	                    this.reinterpretExpressionAsPattern(init);
	                    left = init;
	                    right = this.parseExpression();
	                    init = null;
	                }
	                else if (this.matchContextualKeyword('of')) {
	                    if (!this.context.isAssignmentTarget || init.type === syntax_1.Syntax.AssignmentExpression) {
	                        this.tolerateError(messages_1.Messages.InvalidLHSInForLoop);
	                    }
	                    this.nextToken();
	                    this.reinterpretExpressionAsPattern(init);
	                    left = init;
	                    right = this.parseAssignmentExpression();
	                    init = null;
	                    forIn = false;
	                }
	                else {
	                    if (this.match(',')) {
	                        var initSeq = [init];
	                        while (this.match(',')) {
	                            this.nextToken();
	                            initSeq.push(this.isolateCoverGrammar(this.parseAssignmentExpression));
	                        }
	                        init = this.finalize(this.startNode(initStartToken), new Node.SequenceExpression(initSeq));
	                    }
	                    this.expect(';');
	                }
	            }
	        }
	        if (typeof left === 'undefined') {
	            if (!this.match(';')) {
	                test = this.parseExpression();
	            }
	            this.expect(';');
	            if (!this.match(')')) {
	                update = this.parseExpression();
	            }
	        }
	        var body;
	        if (!this.match(')') && this.config.tolerant) {
	            this.tolerateUnexpectedToken(this.nextToken());
	            body = this.finalize(this.createNode(), new Node.EmptyStatement());
	        }
	        else {
	            this.expect(')');
	            var previousInIteration = this.context.inIteration;
	            this.context.inIteration = true;
	            body = this.isolateCoverGrammar(this.parseStatement);
	            this.context.inIteration = previousInIteration;
	        }
	        return (typeof left === 'undefined') ?
	            this.finalize(node, new Node.ForStatement(init, test, update, body)) :
	            forIn ? this.finalize(node, new Node.ForInStatement(left, right, body)) :
	                this.finalize(node, new Node.ForOfStatement(left, right, body));
	    };
	    // https://tc39.github.io/ecma262/#sec-continue-statement
	    Parser.prototype.parseContinueStatement = function () {
	        var node = this.createNode();
	        this.expectKeyword('continue');
	        var label = null;
	        if (this.lookahead.type === 3 /* Identifier */ && !this.hasLineTerminator) {
	            var id = this.parseVariableIdentifier();
	            label = id;
	            var key = '$' + id.name;
	            if (!Object.prototype.hasOwnProperty.call(this.context.labelSet, key)) {
	                this.throwError(messages_1.Messages.UnknownLabel, id.name);
	            }
	        }
	        this.consumeSemicolon();
	        if (label === null && !this.context.inIteration) {
	            this.throwError(messages_1.Messages.IllegalContinue);
	        }
	        return this.finalize(node, new Node.ContinueStatement(label));
	    };
	    // https://tc39.github.io/ecma262/#sec-break-statement
	    Parser.prototype.parseBreakStatement = function () {
	        var node = this.createNode();
	        this.expectKeyword('break');
	        var label = null;
	        if (this.lookahead.type === 3 /* Identifier */ && !this.hasLineTerminator) {
	            var id = this.parseVariableIdentifier();
	            var key = '$' + id.name;
	            if (!Object.prototype.hasOwnProperty.call(this.context.labelSet, key)) {
	                this.throwError(messages_1.Messages.UnknownLabel, id.name);
	            }
	            label = id;
	        }
	        this.consumeSemicolon();
	        if (label === null && !this.context.inIteration && !this.context.inSwitch) {
	            this.throwError(messages_1.Messages.IllegalBreak);
	        }
	        return this.finalize(node, new Node.BreakStatement(label));
	    };
	    // https://tc39.github.io/ecma262/#sec-return-statement
	    Parser.prototype.parseReturnStatement = function () {
	        if (!this.context.inFunctionBody) {
	            this.tolerateError(messages_1.Messages.IllegalReturn);
	        }
	        var node = this.createNode();
	        this.expectKeyword('return');
	        var hasArgument = (!this.match(';') && !this.match('}') &&
	            !this.hasLineTerminator && this.lookahead.type !== 2 /* EOF */) ||
	            this.lookahead.type === 8 /* StringLiteral */ ||
	            this.lookahead.type === 10 /* Template */;
	        var argument = hasArgument ? this.parseExpression() : null;
	        this.consumeSemicolon();
	        return this.finalize(node, new Node.ReturnStatement(argument));
	    };
	    // https://tc39.github.io/ecma262/#sec-with-statement
	    Parser.prototype.parseWithStatement = function () {
	        if (this.context.strict) {
	            this.tolerateError(messages_1.Messages.StrictModeWith);
	        }
	        var node = this.createNode();
	        var body;
	        this.expectKeyword('with');
	        this.expect('(');
	        var object = this.parseExpression();
	        if (!this.match(')') && this.config.tolerant) {
	            this.tolerateUnexpectedToken(this.nextToken());
	            body = this.finalize(this.createNode(), new Node.EmptyStatement());
	        }
	        else {
	            this.expect(')');
	            body = this.parseStatement();
	        }
	        return this.finalize(node, new Node.WithStatement(object, body));
	    };
	    // https://tc39.github.io/ecma262/#sec-switch-statement
	    Parser.prototype.parseSwitchCase = function () {
	        var node = this.createNode();
	        var test;
	        if (this.matchKeyword('default')) {
	            this.nextToken();
	            test = null;
	        }
	        else {
	            this.expectKeyword('case');
	            test = this.parseExpression();
	        }
	        this.expect(':');
	        var consequent = [];
	        while (true) {
	            if (this.match('}') || this.matchKeyword('default') || this.matchKeyword('case')) {
	                break;
	            }
	            consequent.push(this.parseStatementListItem());
	        }
	        return this.finalize(node, new Node.SwitchCase(test, consequent));
	    };
	    Parser.prototype.parseSwitchStatement = function () {
	        var node = this.createNode();
	        this.expectKeyword('switch');
	        this.expect('(');
	        var discriminant = this.parseExpression();
	        this.expect(')');
	        var previousInSwitch = this.context.inSwitch;
	        this.context.inSwitch = true;
	        var cases = [];
	        var defaultFound = false;
	        this.expect('{');
	        while (true) {
	            if (this.match('}')) {
	                break;
	            }
	            var clause = this.parseSwitchCase();
	            if (clause.test === null) {
	                if (defaultFound) {
	                    this.throwError(messages_1.Messages.MultipleDefaultsInSwitch);
	                }
	                defaultFound = true;
	            }
	            cases.push(clause);
	        }
	        this.expect('}');
	        this.context.inSwitch = previousInSwitch;
	        return this.finalize(node, new Node.SwitchStatement(discriminant, cases));
	    };
	    // https://tc39.github.io/ecma262/#sec-labelled-statements
	    Parser.prototype.parseLabelledStatement = function () {
	        var node = this.createNode();
	        var expr = this.parseExpression();
	        var statement;
	        if ((expr.type === syntax_1.Syntax.Identifier) && this.match(':')) {
	            this.nextToken();
	            var id = expr;
	            var key = '$' + id.name;
	            if (Object.prototype.hasOwnProperty.call(this.context.labelSet, key)) {
	                this.throwError(messages_1.Messages.Redeclaration, 'Label', id.name);
	            }
	            this.context.labelSet[key] = true;
	            var body = void 0;
	            if (this.matchKeyword('class')) {
	                this.tolerateUnexpectedToken(this.lookahead);
	                body = this.parseClassDeclaration();
	            }
	            else if (this.matchKeyword('function')) {
	                var token = this.lookahead;
	                var declaration = this.parseFunctionDeclaration();
	                if (this.context.strict) {
	                    this.tolerateUnexpectedToken(token, messages_1.Messages.StrictFunction);
	                }
	                else if (declaration.generator) {
	                    this.tolerateUnexpectedToken(token, messages_1.Messages.GeneratorInLegacyContext);
	                }
	                body = declaration;
	            }
	            else {
	                body = this.parseStatement();
	            }
	            delete this.context.labelSet[key];
	            statement = new Node.LabeledStatement(id, body);
	        }
	        else {
	            this.consumeSemicolon();
	            statement = new Node.ExpressionStatement(expr);
	        }
	        return this.finalize(node, statement);
	    };
	    // https://tc39.github.io/ecma262/#sec-throw-statement
	    Parser.prototype.parseThrowStatement = function () {
	        var node = this.createNode();
	        this.expectKeyword('throw');
	        if (this.hasLineTerminator) {
	            this.throwError(messages_1.Messages.NewlineAfterThrow);
	        }
	        var argument = this.parseExpression();
	        this.consumeSemicolon();
	        return this.finalize(node, new Node.ThrowStatement(argument));
	    };
	    // https://tc39.github.io/ecma262/#sec-try-statement
	    Parser.prototype.parseCatchClause = function () {
	        var node = this.createNode();
	        this.expectKeyword('catch');
	        this.expect('(');
	        if (this.match(')')) {
	            this.throwUnexpectedToken(this.lookahead);
	        }
	        var params = [];
	        var param = this.parsePattern(params);
	        var paramMap = {};
	        for (var i = 0; i < params.length; i++) {
	            var key = '$' + params[i].value;
	            if (Object.prototype.hasOwnProperty.call(paramMap, key)) {
	                this.tolerateError(messages_1.Messages.DuplicateBinding, params[i].value);
	            }
	            paramMap[key] = true;
	        }
	        if (this.context.strict && param.type === syntax_1.Syntax.Identifier) {
	            if (this.scanner.isRestrictedWord(param.name)) {
	                this.tolerateError(messages_1.Messages.StrictCatchVariable);
	            }
	        }
	        this.expect(')');
	        var body = this.parseBlock();
	        return this.finalize(node, new Node.CatchClause(param, body));
	    };
	    Parser.prototype.parseFinallyClause = function () {
	        this.expectKeyword('finally');
	        return this.parseBlock();
	    };
	    Parser.prototype.parseTryStatement = function () {
	        var node = this.createNode();
	        this.expectKeyword('try');
	        var block = this.parseBlock();
	        var handler = this.matchKeyword('catch') ? this.parseCatchClause() : null;
	        var finalizer = this.matchKeyword('finally') ? this.parseFinallyClause() : null;
	        if (!handler && !finalizer) {
	            this.throwError(messages_1.Messages.NoCatchOrFinally);
	        }
	        return this.finalize(node, new Node.TryStatement(block, handler, finalizer));
	    };
	    // https://tc39.github.io/ecma262/#sec-debugger-statement
	    Parser.prototype.parseDebuggerStatement = function () {
	        var node = this.createNode();
	        this.expectKeyword('debugger');
	        this.consumeSemicolon();
	        return this.finalize(node, new Node.DebuggerStatement());
	    };
	    // https://tc39.github.io/ecma262/#sec-ecmascript-language-statements-and-declarations
	    Parser.prototype.parseStatement = function () {
	        var statement;
	        switch (this.lookahead.type) {
	            case 1 /* BooleanLiteral */:
	            case 5 /* NullLiteral */:
	            case 6 /* NumericLiteral */:
	            case 8 /* StringLiteral */:
	            case 10 /* Template */:
	            case 9 /* RegularExpression */:
	                statement = this.parseExpressionStatement();
	                break;
	            case 7 /* Punctuator */:
	                var value = this.lookahead.value;
	                if (value === '{') {
	                    statement = this.parseBlock();
	                }
	                else if (value === '(') {
	                    statement = this.parseExpressionStatement();
	                }
	                else if (value === ';') {
	                    statement = this.parseEmptyStatement();
	                }
	                else {
	                    statement = this.parseExpressionStatement();
	                }
	                break;
	            case 3 /* Identifier */:
	                statement = this.matchAsyncFunction() ? this.parseFunctionDeclaration() : this.parseLabelledStatement();
	                break;
	            case 4 /* Keyword */:
	                switch (this.lookahead.value) {
	                    case 'break':
	                        statement = this.parseBreakStatement();
	                        break;
	                    case 'continue':
	                        statement = this.parseContinueStatement();
	                        break;
	                    case 'debugger':
	                        statement = this.parseDebuggerStatement();
	                        break;
	                    case 'do':
	                        statement = this.parseDoWhileStatement();
	                        break;
	                    case 'for':
	                        statement = this.parseForStatement();
	                        break;
	                    case 'function':
	                        statement = this.parseFunctionDeclaration();
	                        break;
	                    case 'if':
	                        statement = this.parseIfStatement();
	                        break;
	                    case 'return':
	                        statement = this.parseReturnStatement();
	                        break;
	                    case 'switch':
	                        statement = this.parseSwitchStatement();
	                        break;
	                    case 'throw':
	                        statement = this.parseThrowStatement();
	                        break;
	                    case 'try':
	                        statement = this.parseTryStatement();
	                        break;
	                    case 'var':
	                        statement = this.parseVariableStatement();
	                        break;
	                    case 'while':
	                        statement = this.parseWhileStatement();
	                        break;
	                    case 'with':
	                        statement = this.parseWithStatement();
	                        break;
	                    default:
	                        statement = this.parseExpressionStatement();
	                        break;
	                }
	                break;
	            default:
	                statement = this.throwUnexpectedToken(this.lookahead);
	        }
	        return statement;
	    };
	    // https://tc39.github.io/ecma262/#sec-function-definitions
	    Parser.prototype.parseFunctionSourceElements = function () {
	        var node = this.createNode();
	        this.expect('{');
	        var body = this.parseDirectivePrologues();
	        var previousLabelSet = this.context.labelSet;
	        var previousInIteration = this.context.inIteration;
	        var previousInSwitch = this.context.inSwitch;
	        var previousInFunctionBody = this.context.inFunctionBody;
	        this.context.labelSet = {};
	        this.context.inIteration = false;
	        this.context.inSwitch = false;
	        this.context.inFunctionBody = true;
	        while (this.lookahead.type !== 2 /* EOF */) {
	            if (this.match('}')) {
	                break;
	            }
	            body.push(this.parseStatementListItem());
	        }
	        this.expect('}');
	        this.context.labelSet = previousLabelSet;
	        this.context.inIteration = previousInIteration;
	        this.context.inSwitch = previousInSwitch;
	        this.context.inFunctionBody = previousInFunctionBody;
	        return this.finalize(node, new Node.BlockStatement(body));
	    };
	    Parser.prototype.validateParam = function (options, param, name) {
	        var key = '$' + name;
	        if (this.context.strict) {
	            if (this.scanner.isRestrictedWord(name)) {
	                options.stricted = param;
	                options.message = messages_1.Messages.StrictParamName;
	            }
	            if (Object.prototype.hasOwnProperty.call(options.paramSet, key)) {
	                options.stricted = param;
	                options.message = messages_1.Messages.StrictParamDupe;
	            }
	        }
	        else if (!options.firstRestricted) {
	            if (this.scanner.isRestrictedWord(name)) {
	                options.firstRestricted = param;
	                options.message = messages_1.Messages.StrictParamName;
	            }
	            else if (this.scanner.isStrictModeReservedWord(name)) {
	                options.firstRestricted = param;
	                options.message = messages_1.Messages.StrictReservedWord;
	            }
	            else if (Object.prototype.hasOwnProperty.call(options.paramSet, key)) {
	                options.stricted = param;
	                options.message = messages_1.Messages.StrictParamDupe;
	            }
	        }
	        /* istanbul ignore next */
	        if (typeof Object.defineProperty === 'function') {
	            Object.defineProperty(options.paramSet, key, { value: true, enumerable: true, writable: true, configurable: true });
	        }
	        else {
	            options.paramSet[key] = true;
	        }
	    };
	    Parser.prototype.parseRestElement = function (params) {
	        var node = this.createNode();
	        this.expect('...');
	        var arg = this.parsePattern(params);
	        if (this.match('=')) {
	            this.throwError(messages_1.Messages.DefaultRestParameter);
	        }
	        if (!this.match(')')) {
	            this.throwError(messages_1.Messages.ParameterAfterRestParameter);
	        }
	        return this.finalize(node, new Node.RestElement(arg));
	    };
	    Parser.prototype.parseFormalParameter = function (options) {
	        var params = [];
	        var param = this.match('...') ? this.parseRestElement(params) : this.parsePatternWithDefault(params);
	        for (var i = 0; i < params.length; i++) {
	            this.validateParam(options, params[i], params[i].value);
	        }
	        options.simple = options.simple && (param instanceof Node.Identifier);
	        options.params.push(param);
	    };
	    Parser.prototype.parseFormalParameters = function (firstRestricted) {
	        var options;
	        options = {
	            simple: true,
	            params: [],
	            firstRestricted: firstRestricted
	        };
	        this.expect('(');
	        if (!this.match(')')) {
	            options.paramSet = {};
	            while (this.lookahead.type !== 2 /* EOF */) {
	                this.parseFormalParameter(options);
	                if (this.match(')')) {
	                    break;
	                }
	                this.expect(',');
	                if (this.match(')')) {
	                    break;
	                }
	            }
	        }
	        this.expect(')');
	        return {
	            simple: options.simple,
	            params: options.params,
	            stricted: options.stricted,
	            firstRestricted: options.firstRestricted,
	            message: options.message
	        };
	    };
	    Parser.prototype.matchAsyncFunction = function () {
	        var match = this.matchContextualKeyword('async');
	        if (match) {
	            var state = this.scanner.saveState();
	            this.scanner.scanComments();
	            var next = this.scanner.lex();
	            this.scanner.restoreState(state);
	            match = (state.lineNumber === next.lineNumber) && (next.type === 4 /* Keyword */) && (next.value === 'function');
	        }
	        return match;
	    };
	    Parser.prototype.parseFunctionDeclaration = function (identifierIsOptional) {
	        var node = this.createNode();
	        var isAsync = this.matchContextualKeyword('async');
	        if (isAsync) {
	            this.nextToken();
	        }
	        this.expectKeyword('function');
	        var isGenerator = isAsync ? false : this.match('*');
	        if (isGenerator) {
	            this.nextToken();
	        }
	        var message;
	        var id = null;
	        var firstRestricted = null;
	        if (!identifierIsOptional || !this.match('(')) {
	            var token = this.lookahead;
	            id = this.parseVariableIdentifier();
	            if (this.context.strict) {
	                if (this.scanner.isRestrictedWord(token.value)) {
	                    this.tolerateUnexpectedToken(token, messages_1.Messages.StrictFunctionName);
	                }
	            }
	            else {
	                if (this.scanner.isRestrictedWord(token.value)) {
	                    firstRestricted = token;
	                    message = messages_1.Messages.StrictFunctionName;
	                }
	                else if (this.scanner.isStrictModeReservedWord(token.value)) {
	                    firstRestricted = token;
	                    message = messages_1.Messages.StrictReservedWord;
	                }
	            }
	        }
	        var previousAllowAwait = this.context.await;
	        var previousAllowYield = this.context.allowYield;
	        this.context.await = isAsync;
	        this.context.allowYield = !isGenerator;
	        var formalParameters = this.parseFormalParameters(firstRestricted);
	        var params = formalParameters.params;
	        var stricted = formalParameters.stricted;
	        firstRestricted = formalParameters.firstRestricted;
	        if (formalParameters.message) {
	            message = formalParameters.message;
	        }
	        var previousStrict = this.context.strict;
	        var previousAllowStrictDirective = this.context.allowStrictDirective;
	        this.context.allowStrictDirective = formalParameters.simple;
	        var body = this.parseFunctionSourceElements();
	        if (this.context.strict && firstRestricted) {
	            this.throwUnexpectedToken(firstRestricted, message);
	        }
	        if (this.context.strict && stricted) {
	            this.tolerateUnexpectedToken(stricted, message);
	        }
	        this.context.strict = previousStrict;
	        this.context.allowStrictDirective = previousAllowStrictDirective;
	        this.context.await = previousAllowAwait;
	        this.context.allowYield = previousAllowYield;
	        return isAsync ? this.finalize(node, new Node.AsyncFunctionDeclaration(id, params, body)) :
	            this.finalize(node, new Node.FunctionDeclaration(id, params, body, isGenerator));
	    };
	    Parser.prototype.parseFunctionExpression = function () {
	        var node = this.createNode();
	        var isAsync = this.matchContextualKeyword('async');
	        if (isAsync) {
	            this.nextToken();
	        }
	        this.expectKeyword('function');
	        var isGenerator = isAsync ? false : this.match('*');
	        if (isGenerator) {
	            this.nextToken();
	        }
	        var message;
	        var id = null;
	        var firstRestricted;
	        var previousAllowAwait = this.context.await;
	        var previousAllowYield = this.context.allowYield;
	        this.context.await = isAsync;
	        this.context.allowYield = !isGenerator;
	        if (!this.match('(')) {
	            var token = this.lookahead;
	            id = (!this.context.strict && !isGenerator && this.matchKeyword('yield')) ? this.parseIdentifierName() : this.parseVariableIdentifier();
	            if (this.context.strict) {
	                if (this.scanner.isRestrictedWord(token.value)) {
	                    this.tolerateUnexpectedToken(token, messages_1.Messages.StrictFunctionName);
	                }
	            }
	            else {
	                if (this.scanner.isRestrictedWord(token.value)) {
	                    firstRestricted = token;
	                    message = messages_1.Messages.StrictFunctionName;
	                }
	                else if (this.scanner.isStrictModeReservedWord(token.value)) {
	                    firstRestricted = token;
	                    message = messages_1.Messages.StrictReservedWord;
	                }
	            }
	        }
	        var formalParameters = this.parseFormalParameters(firstRestricted);
	        var params = formalParameters.params;
	        var stricted = formalParameters.stricted;
	        firstRestricted = formalParameters.firstRestricted;
	        if (formalParameters.message) {
	            message = formalParameters.message;
	        }
	        var previousStrict = this.context.strict;
	        var previousAllowStrictDirective = this.context.allowStrictDirective;
	        this.context.allowStrictDirective = formalParameters.simple;
	        var body = this.parseFunctionSourceElements();
	        if (this.context.strict && firstRestricted) {
	            this.throwUnexpectedToken(firstRestricted, message);
	        }
	        if (this.context.strict && stricted) {
	            this.tolerateUnexpectedToken(stricted, message);
	        }
	        this.context.strict = previousStrict;
	        this.context.allowStrictDirective = previousAllowStrictDirective;
	        this.context.await = previousAllowAwait;
	        this.context.allowYield = previousAllowYield;
	        return isAsync ? this.finalize(node, new Node.AsyncFunctionExpression(id, params, body)) :
	            this.finalize(node, new Node.FunctionExpression(id, params, body, isGenerator));
	    };
	    // https://tc39.github.io/ecma262/#sec-directive-prologues-and-the-use-strict-directive
	    Parser.prototype.parseDirective = function () {
	        var token = this.lookahead;
	        var node = this.createNode();
	        var expr = this.parseExpression();
	        var directive = (expr.type === syntax_1.Syntax.Literal) ? this.getTokenRaw(token).slice(1, -1) : null;
	        this.consumeSemicolon();
	        return this.finalize(node, directive ? new Node.Directive(expr, directive) : new Node.ExpressionStatement(expr));
	    };
	    Parser.prototype.parseDirectivePrologues = function () {
	        var firstRestricted = null;
	        var body = [];
	        while (true) {
	            var token = this.lookahead;
	            if (token.type !== 8 /* StringLiteral */) {
	                break;
	            }
	            var statement = this.parseDirective();
	            body.push(statement);
	            var directive = statement.directive;
	            if (typeof directive !== 'string') {
	                break;
	            }
	            if (directive === 'use strict') {
	                this.context.strict = true;
	                if (firstRestricted) {
	                    this.tolerateUnexpectedToken(firstRestricted, messages_1.Messages.StrictOctalLiteral);
	                }
	                if (!this.context.allowStrictDirective) {
	                    this.tolerateUnexpectedToken(token, messages_1.Messages.IllegalLanguageModeDirective);
	                }
	            }
	            else {
	                if (!firstRestricted && token.octal) {
	                    firstRestricted = token;
	                }
	            }
	        }
	        return body;
	    };
	    // https://tc39.github.io/ecma262/#sec-method-definitions
	    Parser.prototype.qualifiedPropertyName = function (token) {
	        switch (token.type) {
	            case 3 /* Identifier */:
	            case 8 /* StringLiteral */:
	            case 1 /* BooleanLiteral */:
	            case 5 /* NullLiteral */:
	            case 6 /* NumericLiteral */:
	            case 4 /* Keyword */:
	                return true;
	            case 7 /* Punctuator */:
	                return token.value === '[';
	            default:
	                break;
	        }
	        return false;
	    };
	    Parser.prototype.parseGetterMethod = function () {
	        var node = this.createNode();
	        var isGenerator = false;
	        var previousAllowYield = this.context.allowYield;
	        this.context.allowYield = !isGenerator;
	        var formalParameters = this.parseFormalParameters();
	        if (formalParameters.params.length > 0) {
	            this.tolerateError(messages_1.Messages.BadGetterArity);
	        }
	        var method = this.parsePropertyMethod(formalParameters);
	        this.context.allowYield = previousAllowYield;
	        return this.finalize(node, new Node.FunctionExpression(null, formalParameters.params, method, isGenerator));
	    };
	    Parser.prototype.parseSetterMethod = function () {
	        var node = this.createNode();
	        var isGenerator = false;
	        var previousAllowYield = this.context.allowYield;
	        this.context.allowYield = !isGenerator;
	        var formalParameters = this.parseFormalParameters();
	        if (formalParameters.params.length !== 1) {
	            this.tolerateError(messages_1.Messages.BadSetterArity);
	        }
	        else if (formalParameters.params[0] instanceof Node.RestElement) {
	            this.tolerateError(messages_1.Messages.BadSetterRestParameter);
	        }
	        var method = this.parsePropertyMethod(formalParameters);
	        this.context.allowYield = previousAllowYield;
	        return this.finalize(node, new Node.FunctionExpression(null, formalParameters.params, method, isGenerator));
	    };
	    Parser.prototype.parseGeneratorMethod = function () {
	        var node = this.createNode();
	        var isGenerator = true;
	        var previousAllowYield = this.context.allowYield;
	        this.context.allowYield = true;
	        var params = this.parseFormalParameters();
	        this.context.allowYield = false;
	        var method = this.parsePropertyMethod(params);
	        this.context.allowYield = previousAllowYield;
	        return this.finalize(node, new Node.FunctionExpression(null, params.params, method, isGenerator));
	    };
	    // https://tc39.github.io/ecma262/#sec-generator-function-definitions
	    Parser.prototype.isStartOfExpression = function () {
	        var start = true;
	        var value = this.lookahead.value;
	        switch (this.lookahead.type) {
	            case 7 /* Punctuator */:
	                start = (value === '[') || (value === '(') || (value === '{') ||
	                    (value === '+') || (value === '-') ||
	                    (value === '!') || (value === '~') ||
	                    (value === '++') || (value === '--') ||
	                    (value === '/') || (value === '/='); // regular expression literal
	                break;
	            case 4 /* Keyword */:
	                start = (value === 'class') || (value === 'delete') ||
	                    (value === 'function') || (value === 'let') || (value === 'new') ||
	                    (value === 'super') || (value === 'this') || (value === 'typeof') ||
	                    (value === 'void') || (value === 'yield');
	                break;
	            default:
	                break;
	        }
	        return start;
	    };
	    Parser.prototype.parseYieldExpression = function () {
	        var node = this.createNode();
	        this.expectKeyword('yield');
	        var argument = null;
	        var delegate = false;
	        if (!this.hasLineTerminator) {
	            var previousAllowYield = this.context.allowYield;
	            this.context.allowYield = false;
	            delegate = this.match('*');
	            if (delegate) {
	                this.nextToken();
	                argument = this.parseAssignmentExpression();
	            }
	            else if (this.isStartOfExpression()) {
	                argument = this.parseAssignmentExpression();
	            }
	            this.context.allowYield = previousAllowYield;
	        }
	        return this.finalize(node, new Node.YieldExpression(argument, delegate));
	    };
	    // https://tc39.github.io/ecma262/#sec-class-definitions
	    Parser.prototype.parseClassElement = function (hasConstructor) {
	        var token = this.lookahead;
	        var node = this.createNode();
	        var kind = '';
	        var key = null;
	        var value = null;
	        var computed = false;
	        var method = false;
	        var isStatic = false;
	        var isAsync = false;
	        if (this.match('*')) {
	            this.nextToken();
	        }
	        else {
	            computed = this.match('[');
	            key = this.parseObjectPropertyKey();
	            var id = key;
	            if (id.name === 'static' && (this.qualifiedPropertyName(this.lookahead) || this.match('*'))) {
	                token = this.lookahead;
	                isStatic = true;
	                computed = this.match('[');
	                if (this.match('*')) {
	                    this.nextToken();
	                }
	                else {
	                    key = this.parseObjectPropertyKey();
	                }
	            }
	            if ((token.type === 3 /* Identifier */) && !this.hasLineTerminator && (token.value === 'async')) {
	                var punctuator = this.lookahead.value;
	                if (punctuator !== ':' && punctuator !== '(' && punctuator !== '*') {
	                    isAsync = true;
	                    token = this.lookahead;
	                    key = this.parseObjectPropertyKey();
	                    if (token.type === 3 /* Identifier */ && token.value === 'constructor') {
	                        this.tolerateUnexpectedToken(token, messages_1.Messages.ConstructorIsAsync);
	                    }
	                }
	            }
	        }
	        var lookaheadPropertyKey = this.qualifiedPropertyName(this.lookahead);
	        if (token.type === 3 /* Identifier */) {
	            if (token.value === 'get' && lookaheadPropertyKey) {
	                kind = 'get';
	                computed = this.match('[');
	                key = this.parseObjectPropertyKey();
	                this.context.allowYield = false;
	                value = this.parseGetterMethod();
	            }
	            else if (token.value === 'set' && lookaheadPropertyKey) {
	                kind = 'set';
	                computed = this.match('[');
	                key = this.parseObjectPropertyKey();
	                value = this.parseSetterMethod();
	            }
	        }
	        else if (token.type === 7 /* Punctuator */ && token.value === '*' && lookaheadPropertyKey) {
	            kind = 'init';
	            computed = this.match('[');
	            key = this.parseObjectPropertyKey();
	            value = this.parseGeneratorMethod();
	            method = true;
	        }
	        if (!kind && key && this.match('(')) {
	            kind = 'init';
	            value = isAsync ? this.parsePropertyMethodAsyncFunction() : this.parsePropertyMethodFunction();
	            method = true;
	        }
	        if (!kind) {
	            this.throwUnexpectedToken(this.lookahead);
	        }
	        if (kind === 'init') {
	            kind = 'method';
	        }
	        if (!computed) {
	            if (isStatic && this.isPropertyKey(key, 'prototype')) {
	                this.throwUnexpectedToken(token, messages_1.Messages.StaticPrototype);
	            }
	            if (!isStatic && this.isPropertyKey(key, 'constructor')) {
	                if (kind !== 'method' || !method || (value && value.generator)) {
	                    this.throwUnexpectedToken(token, messages_1.Messages.ConstructorSpecialMethod);
	                }
	                if (hasConstructor.value) {
	                    this.throwUnexpectedToken(token, messages_1.Messages.DuplicateConstructor);
	                }
	                else {
	                    hasConstructor.value = true;
	                }
	                kind = 'constructor';
	            }
	        }
	        return this.finalize(node, new Node.MethodDefinition(key, computed, value, kind, isStatic));
	    };
	    Parser.prototype.parseClassElementList = function () {
	        var body = [];
	        var hasConstructor = { value: false };
	        this.expect('{');
	        while (!this.match('}')) {
	            if (this.match(';')) {
	                this.nextToken();
	            }
	            else {
	                body.push(this.parseClassElement(hasConstructor));
	            }
	        }
	        this.expect('}');
	        return body;
	    };
	    Parser.prototype.parseClassBody = function () {
	        var node = this.createNode();
	        var elementList = this.parseClassElementList();
	        return this.finalize(node, new Node.ClassBody(elementList));
	    };
	    Parser.prototype.parseClassDeclaration = function (identifierIsOptional) {
	        var node = this.createNode();
	        var previousStrict = this.context.strict;
	        this.context.strict = true;
	        this.expectKeyword('class');
	        var id = (identifierIsOptional && (this.lookahead.type !== 3 /* Identifier */)) ? null : this.parseVariableIdentifier();
	        var superClass = null;
	        if (this.matchKeyword('extends')) {
	            this.nextToken();
	            superClass = this.isolateCoverGrammar(this.parseLeftHandSideExpressionAllowCall);
	        }
	        var classBody = this.parseClassBody();
	        this.context.strict = previousStrict;
	        return this.finalize(node, new Node.ClassDeclaration(id, superClass, classBody));
	    };
	    Parser.prototype.parseClassExpression = function () {
	        var node = this.createNode();
	        var previousStrict = this.context.strict;
	        this.context.strict = true;
	        this.expectKeyword('class');
	        var id = (this.lookahead.type === 3 /* Identifier */) ? this.parseVariableIdentifier() : null;
	        var superClass = null;
	        if (this.matchKeyword('extends')) {
	            this.nextToken();
	            superClass = this.isolateCoverGrammar(this.parseLeftHandSideExpressionAllowCall);
	        }
	        var classBody = this.parseClassBody();
	        this.context.strict = previousStrict;
	        return this.finalize(node, new Node.ClassExpression(id, superClass, classBody));
	    };
	    // https://tc39.github.io/ecma262/#sec-scripts
	    // https://tc39.github.io/ecma262/#sec-modules
	    Parser.prototype.parseModule = function () {
	        this.context.strict = true;
	        this.context.isModule = true;
	        this.scanner.isModule = true;
	        var node = this.createNode();
	        var body = this.parseDirectivePrologues();
	        while (this.lookahead.type !== 2 /* EOF */) {
	            body.push(this.parseStatementListItem());
	        }
	        return this.finalize(node, new Node.Module(body));
	    };
	    Parser.prototype.parseScript = function () {
	        var node = this.createNode();
	        var body = this.parseDirectivePrologues();
	        while (this.lookahead.type !== 2 /* EOF */) {
	            body.push(this.parseStatementListItem());
	        }
	        return this.finalize(node, new Node.Script(body));
	    };
	    // https://tc39.github.io/ecma262/#sec-imports
	    Parser.prototype.parseModuleSpecifier = function () {
	        var node = this.createNode();
	        if (this.lookahead.type !== 8 /* StringLiteral */) {
	            this.throwError(messages_1.Messages.InvalidModuleSpecifier);
	        }
	        var token = this.nextToken();
	        var raw = this.getTokenRaw(token);
	        return this.finalize(node, new Node.Literal(token.value, raw));
	    };
	    // import {<foo as bar>} ...;
	    Parser.prototype.parseImportSpecifier = function () {
	        var node = this.createNode();
	        var imported;
	        var local;
	        if (this.lookahead.type === 3 /* Identifier */) {
	            imported = this.parseVariableIdentifier();
	            local = imported;
	            if (this.matchContextualKeyword('as')) {
	                this.nextToken();
	                local = this.parseVariableIdentifier();
	            }
	        }
	        else {
	            imported = this.parseIdentifierName();
	            local = imported;
	            if (this.matchContextualKeyword('as')) {
	                this.nextToken();
	                local = this.parseVariableIdentifier();
	            }
	            else {
	                this.throwUnexpectedToken(this.nextToken());
	            }
	        }
	        return this.finalize(node, new Node.ImportSpecifier(local, imported));
	    };
	    // {foo, bar as bas}
	    Parser.prototype.parseNamedImports = function () {
	        this.expect('{');
	        var specifiers = [];
	        while (!this.match('}')) {
	            specifiers.push(this.parseImportSpecifier());
	            if (!this.match('}')) {
	                this.expect(',');
	            }
	        }
	        this.expect('}');
	        return specifiers;
	    };
	    // import <foo> ...;
	    Parser.prototype.parseImportDefaultSpecifier = function () {
	        var node = this.createNode();
	        var local = this.parseIdentifierName();
	        return this.finalize(node, new Node.ImportDefaultSpecifier(local));
	    };
	    // import <* as foo> ...;
	    Parser.prototype.parseImportNamespaceSpecifier = function () {
	        var node = this.createNode();
	        this.expect('*');
	        if (!this.matchContextualKeyword('as')) {
	            this.throwError(messages_1.Messages.NoAsAfterImportNamespace);
	        }
	        this.nextToken();
	        var local = this.parseIdentifierName();
	        return this.finalize(node, new Node.ImportNamespaceSpecifier(local));
	    };
	    Parser.prototype.parseImportDeclaration = function () {
	        if (this.context.inFunctionBody) {
	            this.throwError(messages_1.Messages.IllegalImportDeclaration);
	        }
	        var node = this.createNode();
	        this.expectKeyword('import');
	        var src;
	        var specifiers = [];
	        if (this.lookahead.type === 8 /* StringLiteral */) {
	            // import 'foo';
	            src = this.parseModuleSpecifier();
	        }
	        else {
	            if (this.match('{')) {
	                // import {bar}
	                specifiers = specifiers.concat(this.parseNamedImports());
	            }
	            else if (this.match('*')) {
	                // import * as foo
	                specifiers.push(this.parseImportNamespaceSpecifier());
	            }
	            else if (this.isIdentifierName(this.lookahead) && !this.matchKeyword('default')) {
	                // import foo
	                specifiers.push(this.parseImportDefaultSpecifier());
	                if (this.match(',')) {
	                    this.nextToken();
	                    if (this.match('*')) {
	                        // import foo, * as foo
	                        specifiers.push(this.parseImportNamespaceSpecifier());
	                    }
	                    else if (this.match('{')) {
	                        // import foo, {bar}
	                        specifiers = specifiers.concat(this.parseNamedImports());
	                    }
	                    else {
	                        this.throwUnexpectedToken(this.lookahead);
	                    }
	                }
	            }
	            else {
	                this.throwUnexpectedToken(this.nextToken());
	            }
	            if (!this.matchContextualKeyword('from')) {
	                var message = this.lookahead.value ? messages_1.Messages.UnexpectedToken : messages_1.Messages.MissingFromClause;
	                this.throwError(message, this.lookahead.value);
	            }
	            this.nextToken();
	            src = this.parseModuleSpecifier();
	        }
	        this.consumeSemicolon();
	        return this.finalize(node, new Node.ImportDeclaration(specifiers, src));
	    };
	    // https://tc39.github.io/ecma262/#sec-exports
	    Parser.prototype.parseExportSpecifier = function () {
	        var node = this.createNode();
	        var local = this.parseIdentifierName();
	        var exported = local;
	        if (this.matchContextualKeyword('as')) {
	            this.nextToken();
	            exported = this.parseIdentifierName();
	        }
	        return this.finalize(node, new Node.ExportSpecifier(local, exported));
	    };
	    Parser.prototype.parseExportDeclaration = function () {
	        if (this.context.inFunctionBody) {
	            this.throwError(messages_1.Messages.IllegalExportDeclaration);
	        }
	        var node = this.createNode();
	        this.expectKeyword('export');
	        var exportDeclaration;
	        if (this.matchKeyword('default')) {
	            // export default ...
	            this.nextToken();
	            if (this.matchKeyword('function')) {
	                // export default function foo () {}
	                // export default function () {}
	                var declaration = this.parseFunctionDeclaration(true);
	                exportDeclaration = this.finalize(node, new Node.ExportDefaultDeclaration(declaration));
	            }
	            else if (this.matchKeyword('class')) {
	                // export default class foo {}
	                var declaration = this.parseClassDeclaration(true);
	                exportDeclaration = this.finalize(node, new Node.ExportDefaultDeclaration(declaration));
	            }
	            else if (this.matchContextualKeyword('async')) {
	                // export default async function f () {}
	                // export default async function () {}
	                // export default async x => x
	                var declaration = this.matchAsyncFunction() ? this.parseFunctionDeclaration(true) : this.parseAssignmentExpression();
	                exportDeclaration = this.finalize(node, new Node.ExportDefaultDeclaration(declaration));
	            }
	            else {
	                if (this.matchContextualKeyword('from')) {
	                    this.throwError(messages_1.Messages.UnexpectedToken, this.lookahead.value);
	                }
	                // export default {};
	                // export default [];
	                // export default (1 + 2);
	                var declaration = this.match('{') ? this.parseObjectInitializer() :
	                    this.match('[') ? this.parseArrayInitializer() : this.parseAssignmentExpression();
	                this.consumeSemicolon();
	                exportDeclaration = this.finalize(node, new Node.ExportDefaultDeclaration(declaration));
	            }
	        }
	        else if (this.match('*')) {
	            // export * from 'foo';
	            this.nextToken();
	            if (!this.matchContextualKeyword('from')) {
	                var message = this.lookahead.value ? messages_1.Messages.UnexpectedToken : messages_1.Messages.MissingFromClause;
	                this.throwError(message, this.lookahead.value);
	            }
	            this.nextToken();
	            var src = this.parseModuleSpecifier();
	            this.consumeSemicolon();
	            exportDeclaration = this.finalize(node, new Node.ExportAllDeclaration(src));
	        }
	        else if (this.lookahead.type === 4 /* Keyword */) {
	            // export var f = 1;
	            var declaration = void 0;
	            switch (this.lookahead.value) {
	                case 'let':
	                case 'const':
	                    declaration = this.parseLexicalDeclaration({ inFor: false });
	                    break;
	                case 'var':
	                case 'class':
	                case 'function':
	                    declaration = this.parseStatementListItem();
	                    break;
	                default:
	                    this.throwUnexpectedToken(this.lookahead);
	            }
	            exportDeclaration = this.finalize(node, new Node.ExportNamedDeclaration(declaration, [], null));
	        }
	        else if (this.matchAsyncFunction()) {
	            var declaration = this.parseFunctionDeclaration();
	            exportDeclaration = this.finalize(node, new Node.ExportNamedDeclaration(declaration, [], null));
	        }
	        else {
	            var specifiers = [];
	            var source = null;
	            var isExportFromIdentifier = false;
	            this.expect('{');
	            while (!this.match('}')) {
	                isExportFromIdentifier = isExportFromIdentifier || this.matchKeyword('default');
	                specifiers.push(this.parseExportSpecifier());
	                if (!this.match('}')) {
	                    this.expect(',');
	                }
	            }
	            this.expect('}');
	            if (this.matchContextualKeyword('from')) {
	                // export {default} from 'foo';
	                // export {foo} from 'foo';
	                this.nextToken();
	                source = this.parseModuleSpecifier();
	                this.consumeSemicolon();
	            }
	            else if (isExportFromIdentifier) {
	                // export {default}; // missing fromClause
	                var message = this.lookahead.value ? messages_1.Messages.UnexpectedToken : messages_1.Messages.MissingFromClause;
	                this.throwError(message, this.lookahead.value);
	            }
	            else {
	                // export {foo};
	                this.consumeSemicolon();
	            }
	            exportDeclaration = this.finalize(node, new Node.ExportNamedDeclaration(null, specifiers, source));
	        }
	        return exportDeclaration;
	    };
	    return Parser;
	}());
	exports.Parser = Parser;


/***/ },
/* 9 */
/***/ function(module, exports) {

	"use strict";
	// Ensure the condition is true, otherwise throw an error.
	// This is only to have a better contract semantic, i.e. another safety net
	// to catch a logic error. The condition shall be fulfilled in normal case.
	// Do NOT use this to enforce a certain condition on any user input.
	Object.defineProperty(exports, "__esModule", { value: true });
	function assert(condition, message) {
	    /* istanbul ignore if */
	    if (!condition) {
	        throw new Error('ASSERT: ' + message);
	    }
	}
	exports.assert = assert;


/***/ },
/* 10 */
/***/ function(module, exports) {

	"use strict";
	/* tslint:disable:max-classes-per-file */
	Object.defineProperty(exports, "__esModule", { value: true });
	var ErrorHandler = (function () {
	    function ErrorHandler() {
	        this.errors = [];
	        this.tolerant = false;
	    }
	    ErrorHandler.prototype.recordError = function (error) {
	        this.errors.push(error);
	    };
	    ErrorHandler.prototype.tolerate = function (error) {
	        if (this.tolerant) {
	            this.recordError(error);
	        }
	        else {
	            throw error;
	        }
	    };
	    ErrorHandler.prototype.constructError = function (msg, column) {
	        var error = new Error(msg);
	        try {
	            throw error;
	        }
	        catch (base) {
	            /* istanbul ignore else */
	            if (Object.create && Object.defineProperty) {
	                error = Object.create(base);
	                Object.defineProperty(error, 'column', { value: column });
	            }
	        }
	        /* istanbul ignore next */
	        return error;
	    };
	    ErrorHandler.prototype.createError = function (index, line, col, description) {
	        var msg = 'Line ' + line + ': ' + description;
	        var error = this.constructError(msg, col);
	        error.index = index;
	        error.lineNumber = line;
	        error.description = description;
	        return error;
	    };
	    ErrorHandler.prototype.throwError = function (index, line, col, description) {
	        throw this.createError(index, line, col, description);
	    };
	    ErrorHandler.prototype.tolerateError = function (index, line, col, description) {
	        var error = this.createError(index, line, col, description);
	        if (this.tolerant) {
	            this.recordError(error);
	        }
	        else {
	            throw error;
	        }
	    };
	    return ErrorHandler;
	}());
	exports.ErrorHandler = ErrorHandler;


/***/ },
/* 11 */
/***/ function(module, exports) {

	"use strict";
	Object.defineProperty(exports, "__esModule", { value: true });
	// Error messages should be identical to V8.
	exports.Messages = {
	    BadGetterArity: 'Getter must not have any formal parameters',
	    BadSetterArity: 'Setter must have exactly one formal parameter',
	    BadSetterRestParameter: 'Setter function argument must not be a rest parameter',
	    ConstructorIsAsync: 'Class constructor may not be an async method',
	    ConstructorSpecialMethod: 'Class constructor may not be an accessor',
	    DeclarationMissingInitializer: 'Missing initializer in %0 declaration',
	    DefaultRestParameter: 'Unexpected token =',
	    DuplicateBinding: 'Duplicate binding %0',
	    DuplicateConstructor: 'A class may only have one constructor',
	    DuplicateProtoProperty: 'Duplicate __proto__ fields are not allowed in object literals',
	    ForInOfLoopInitializer: '%0 loop variable declaration may not have an initializer',
	    GeneratorInLegacyContext: 'Generator declarations are not allowed in legacy contexts',
	    IllegalBreak: 'Illegal break statement',
	    IllegalContinue: 'Illegal continue statement',
	    IllegalExportDeclaration: 'Unexpected token',
	    IllegalImportDeclaration: 'Unexpected token',
	    IllegalLanguageModeDirective: 'Illegal \'use strict\' directive in function with non-simple parameter list',
	    IllegalReturn: 'Illegal return statement',
	    InvalidEscapedReservedWord: 'Keyword must not contain escaped characters',
	    InvalidHexEscapeSequence: 'Invalid hexadecimal escape sequence',
	    InvalidLHSInAssignment: 'Invalid left-hand side in assignment',
	    InvalidLHSInForIn: 'Invalid left-hand side in for-in',
	    InvalidLHSInForLoop: 'Invalid left-hand side in for-loop',
	    InvalidModuleSpecifier: 'Unexpected token',
	    InvalidRegExp: 'Invalid regular expression',
	    LetInLexicalBinding: 'let is disallowed as a lexically bound name',
	    MissingFromClause: 'Unexpected token',
	    MultipleDefaultsInSwitch: 'More than one default clause in switch statement',
	    NewlineAfterThrow: 'Illegal newline after throw',
	    NoAsAfterImportNamespace: 'Unexpected token',
	    NoCatchOrFinally: 'Missing catch or finally after try',
	    ParameterAfterRestParameter: 'Rest parameter must be last formal parameter',
	    Redeclaration: '%0 \'%1\' has already been declared',
	    StaticPrototype: 'Classes may not have static property named prototype',
	    StrictCatchVariable: 'Catch variable may not be eval or arguments in strict mode',
	    StrictDelete: 'Delete of an unqualified identifier in strict mode.',
	    StrictFunction: 'In strict mode code, functions can only be declared at top level or inside a block',
	    StrictFunctionName: 'Function name may not be eval or arguments in strict mode',
	    StrictLHSAssignment: 'Assignment to eval or arguments is not allowed in strict mode',
	    StrictLHSPostfix: 'Postfix increment/decrement may not have eval or arguments operand in strict mode',
	    StrictLHSPrefix: 'Prefix increment/decrement may not have eval or arguments operand in strict mode',
	    StrictModeWith: 'Strict mode code may not include a with statement',
	    StrictOctalLiteral: 'Octal literals are not allowed in strict mode.',
	    StrictParamDupe: 'Strict mode function may not have duplicate parameter names',
	    StrictParamName: 'Parameter name eval or arguments is not allowed in strict mode',
	    StrictReservedWord: 'Use of future reserved word in strict mode',
	    StrictVarName: 'Variable name may not be eval or arguments in strict mode',
	    TemplateOctalLiteral: 'Octal literals are not allowed in template strings.',
	    UnexpectedEOS: 'Unexpected end of input',
	    UnexpectedIdentifier: 'Unexpected identifier',
	    UnexpectedNumber: 'Unexpected number',
	    UnexpectedReserved: 'Unexpected reserved word',
	    UnexpectedString: 'Unexpected string',
	    UnexpectedTemplate: 'Unexpected quasi %0',
	    UnexpectedToken: 'Unexpected token %0',
	    UnexpectedTokenIllegal: 'Unexpected token ILLEGAL',
	    UnknownLabel: 'Undefined label \'%0\'',
	    UnterminatedRegExp: 'Invalid regular expression: missing /'
	};


/***/ },
/* 12 */
/***/ function(module, exports, __webpack_require__) {

	"use strict";
	Object.defineProperty(exports, "__esModule", { value: true });
	var assert_1 = __webpack_require__(9);
	var character_1 = __webpack_require__(4);
	var messages_1 = __webpack_require__(11);
	function hexValue(ch) {
	    return '0123456789abcdef'.indexOf(ch.toLowerCase());
	}
	function octalValue(ch) {
	    return '01234567'.indexOf(ch);
	}
	var Scanner = (function () {
	    function Scanner(code, handler) {
	        this.source = code;
	        this.errorHandler = handler;
	        this.trackComment = false;
	        this.isModule = false;
	        this.length = code.length;
	        this.index = 0;
	        this.lineNumber = (code.length > 0) ? 1 : 0;
	        this.lineStart = 0;
	        this.curlyStack = [];
	    }
	    Scanner.prototype.saveState = function () {
	        return {
	            index: this.index,
	            lineNumber: this.lineNumber,
	            lineStart: this.lineStart
	        };
	    };
	    Scanner.prototype.restoreState = function (state) {
	        this.index = state.index;
	        this.lineNumber = state.lineNumber;
	        this.lineStart = state.lineStart;
	    };
	    Scanner.prototype.eof = function () {
	        return this.index >= this.length;
	    };
	    Scanner.prototype.throwUnexpectedToken = function (message) {
	        if (message === void 0) { message = messages_1.Messages.UnexpectedTokenIllegal; }
	        return this.errorHandler.throwError(this.index, this.lineNumber, this.index - this.lineStart + 1, message);
	    };
	    Scanner.prototype.tolerateUnexpectedToken = function (message) {
	        if (message === void 0) { message = messages_1.Messages.UnexpectedTokenIllegal; }
	        this.errorHandler.tolerateError(this.index, this.lineNumber, this.index - this.lineStart + 1, message);
	    };
	    // https://tc39.github.io/ecma262/#sec-comments
	    Scanner.prototype.skipSingleLineComment = function (offset) {
	        var comments = [];
	        var start, loc;
	        if (this.trackComment) {
	            comments = [];
	            start = this.index - offset;
	            loc = {
	                start: {
	                    line: this.lineNumber,
	                    column: this.index - this.lineStart - offset
	                },
	                end: {}
	            };
	        }
	        while (!this.eof()) {
	            var ch = this.source.charCodeAt(this.index);
	            ++this.index;
	            if (character_1.Character.isLineTerminator(ch)) {
	                if (this.trackComment) {
	                    loc.end = {
	                        line: this.lineNumber,
	                        column: this.index - this.lineStart - 1
	                    };
	                    var entry = {
	                        multiLine: false,
	                        slice: [start + offset, this.index - 1],
	                        range: [start, this.index - 1],
	                        loc: loc
	                    };
	                    comments.push(entry);
	                }
	                if (ch === 13 && this.source.charCodeAt(this.index) === 10) {
	                    ++this.index;
	                }
	                ++this.lineNumber;
	                this.lineStart = this.index;
	                return comments;
	            }
	        }
	        if (this.trackComment) {
	            loc.end = {
	                line: this.lineNumber,
	                column: this.index - this.lineStart
	            };
	            var entry = {
	                multiLine: false,
	                slice: [start + offset, this.index],
	                range: [start, this.index],
	                loc: loc
	            };
	            comments.push(entry);
	        }
	        return comments;
	    };
	    Scanner.prototype.skipMultiLineComment = function () {
	        var comments = [];
	        var start, loc;
	        if (this.trackComment) {
	            comments = [];
	            start = this.index - 2;
	            loc = {
	                start: {
	                    line: this.lineNumber,
	                    column: this.index - this.lineStart - 2
	                },
	                end: {}
	            };
	        }
	        while (!this.eof()) {
	            var ch = this.source.charCodeAt(this.index);
	            if (character_1.Character.isLineTerminator(ch)) {
	                if (ch === 0x0D && this.source.charCodeAt(this.index + 1) === 0x0A) {
	                    ++this.index;
	                }
	                ++this.lineNumber;
	                ++this.index;
	                this.lineStart = this.index;
	            }
	            else if (ch === 0x2A) {
	                // Block comment ends with '*/'.
	                if (this.source.charCodeAt(this.index + 1) === 0x2F) {
	                    this.index += 2;
	                    if (this.trackComment) {
	                        loc.end = {
	                            line: this.lineNumber,
	                            column: this.index - this.lineStart
	                        };
	                        var entry = {
	                            multiLine: true,
	                            slice: [start + 2, this.index - 2],
	                            range: [start, this.index],
	                            loc: loc
	                        };
	                        comments.push(entry);
	                    }
	                    return comments;
	                }
	                ++this.index;
	            }
	            else {
	                ++this.index;
	            }
	        }
	        // Ran off the end of the file - the whole thing is a comment
	        if (this.trackComment) {
	            loc.end = {
	                line: this.lineNumber,
	                column: this.index - this.lineStart
	            };
	            var entry = {
	                multiLine: true,
	                slice: [start + 2, this.index],
	                range: [start, this.index],
	                loc: loc
	            };
	            comments.push(entry);
	        }
	        this.tolerateUnexpectedToken();
	        return comments;
	    };
	    Scanner.prototype.scanComments = function () {
	        var comments;
	        if (this.trackComment) {
	            comments = [];
	        }
	        var start = (this.index === 0);
	        while (!this.eof()) {
	            var ch = this.source.charCodeAt(this.index);
	            if (character_1.Character.isWhiteSpace(ch)) {
	                ++this.index;
	            }
	            else if (character_1.Character.isLineTerminator(ch)) {
	                ++this.index;
	                if (ch === 0x0D && this.source.charCodeAt(this.index) === 0x0A) {
	                    ++this.index;
	                }
	                ++this.lineNumber;
	                this.lineStart = this.index;
	                start = true;
	            }
	            else if (ch === 0x2F) {
	                ch = this.source.charCodeAt(this.index + 1);
	                if (ch === 0x2F) {
	                    this.index += 2;
	                    var comment = this.skipSingleLineComment(2);
	                    if (this.trackComment) {
	                        comments = comments.concat(comment);
	                    }
	                    start = true;
	                }
	                else if (ch === 0x2A) {
	                    this.index += 2;
	                    var comment = this.skipMultiLineComment();
	                    if (this.trackComment) {
	                        comments = comments.concat(comment);
	                    }
	                }
	                else {
	                    break;
	                }
	            }
	            else if (start && ch === 0x2D) {
	                // U+003E is '>'
	                if ((this.source.charCodeAt(this.index + 1) === 0x2D) && (this.source.charCodeAt(this.index + 2) === 0x3E)) {
	                    // '-->' is a single-line comment
	                    this.index += 3;
	                    var comment = this.skipSingleLineComment(3);
	                    if (this.trackComment) {
	                        comments = comments.concat(comment);
	                    }
	                }
	                else {
	                    break;
	                }
	            }
	            else if (ch === 0x3C && !this.isModule) {
	                if (this.source.slice(this.index + 1, this.index + 4) === '!--') {
	                    this.index += 4; // `<!--`
	                    var comment = this.skipSingleLineComment(4);
	                    if (this.trackComment) {
	                        comments = comments.concat(comment);
	                    }
	                }
	                else {
	                    break;
	                }
	            }
	            else {
	                break;
	            }
	        }
	        return comments;
	    };
	    // https://tc39.github.io/ecma262/#sec-future-reserved-words
	    Scanner.prototype.isFutureReservedWord = function (id) {
	        switch (id) {
	            case 'enum':
	            case 'export':
	            case 'import':
	            case 'super':
	                return true;
	            default:
	                return false;
	        }
	    };
	    Scanner.prototype.isStrictModeReservedWord = function (id) {
	        switch (id) {
	            case 'implements':
	            case 'interface':
	            case 'package':
	            case 'private':
	            case 'protected':
	            case 'public':
	            case 'static':
	            case 'yield':
	            case 'let':
	                return true;
	            default:
	                return false;
	        }
	    };
	    Scanner.prototype.isRestrictedWord = function (id) {
	        return id === 'eval' || id === 'arguments';
	    };
	    // https://tc39.github.io/ecma262/#sec-keywords
	    Scanner.prototype.isKeyword = function (id) {
	        switch (id.length) {
	            case 2:
	                return (id === 'if') || (id === 'in') || (id === 'do');
	            case 3:
	                return (id === 'var') || (id === 'for') || (id === 'new') ||
	                    (id === 'try') || (id === 'let');
	            case 4:
	                return (id === 'this') || (id === 'else') || (id === 'case') ||
	                    (id === 'void') || (id === 'with') || (id === 'enum');
	            case 5:
	                return (id === 'while') || (id === 'break') || (id === 'catch') ||
	                    (id === 'throw') || (id === 'const') || (id === 'yield') ||
	                    (id === 'class') || (id === 'super');
	            case 6:
	                return (id === 'return') || (id === 'typeof') || (id === 'delete') ||
	                    (id === 'switch') || (id === 'export') || (id === 'import');
	            case 7:
	                return (id === 'default') || (id === 'finally') || (id === 'extends');
	            case 8:
	                return (id === 'function') || (id === 'continue') || (id === 'debugger');
	            case 10:
	                return (id === 'instanceof');
	            default:
	                return false;
	        }
	    };
	    Scanner.prototype.codePointAt = function (i) {
	        var cp = this.source.charCodeAt(i);
	        if (cp >= 0xD800 && cp <= 0xDBFF) {
	            var second = this.source.charCodeAt(i + 1);
	            if (second >= 0xDC00 && second <= 0xDFFF) {
	                var first = cp;
	                cp = (first - 0xD800) * 0x400 + second - 0xDC00 + 0x10000;
	            }
	        }
	        return cp;
	    };
	    Scanner.prototype.scanHexEscape = function (prefix) {
	        var len = (prefix === 'u') ? 4 : 2;
	        var code = 0;
	        for (var i = 0; i < len; ++i) {
	            if (!this.eof() && character_1.Character.isHexDigit(this.source.charCodeAt(this.index))) {
	                code = code * 16 + hexValue(this.source[this.index++]);
	            }
	            else {
	                return null;
	            }
	        }
	        return String.fromCharCode(code);
	    };
	    Scanner.prototype.scanUnicodeCodePointEscape = function () {
	        var ch = this.source[this.index];
	        var code = 0;
	        // At least, one hex digit is required.
	        if (ch === '}') {
	            this.throwUnexpectedToken();
	        }
	        while (!this.eof()) {
	            ch = this.source[this.index++];
	            if (!character_1.Character.isHexDigit(ch.charCodeAt(0))) {
	                break;
	            }
	            code = code * 16 + hexValue(ch);
	        }
	        if (code > 0x10FFFF || ch !== '}') {
	            this.throwUnexpectedToken();
	        }
	        return character_1.Character.fromCodePoint(code);
	    };
	    Scanner.prototype.getIdentifier = function () {
	        var start = this.index++;
	        while (!this.eof()) {
	            var ch = this.source.charCodeAt(this.index);
	            if (ch === 0x5C) {
	                // Blackslash (U+005C) marks Unicode escape sequence.
	                this.index = start;
	                return this.getComplexIdentifier();
	            }
	            else if (ch >= 0xD800 && ch < 0xDFFF) {
	                // Need to handle surrogate pairs.
	                this.index = start;
	                return this.getComplexIdentifier();
	            }
	            if (character_1.Character.isIdentifierPart(ch)) {
	                ++this.index;
	            }
	            else {
	                break;
	            }
	        }
	        return this.source.slice(start, this.index);
	    };
	    Scanner.prototype.getComplexIdentifier = function () {
	        var cp = this.codePointAt(this.index);
	        var id = character_1.Character.fromCodePoint(cp);
	        this.index += id.length;
	        // '\u' (U+005C, U+0075) denotes an escaped character.
	        var ch;
	        if (cp === 0x5C) {
	            if (this.source.charCodeAt(this.index) !== 0x75) {
	                this.throwUnexpectedToken();
	            }
	            ++this.index;
	            if (this.source[this.index] === '{') {
	                ++this.index;
	                ch = this.scanUnicodeCodePointEscape();
	            }
	            else {
	                ch = this.scanHexEscape('u');
	                if (ch === null || ch === '\\' || !character_1.Character.isIdentifierStart(ch.charCodeAt(0))) {
	                    this.throwUnexpectedToken();
	                }
	            }
	            id = ch;
	        }
	        while (!this.eof()) {
	            cp = this.codePointAt(this.index);
	            if (!character_1.Character.isIdentifierPart(cp)) {
	                break;
	            }
	            ch = character_1.Character.fromCodePoint(cp);
	            id += ch;
	            this.index += ch.length;
	            // '\u' (U+005C, U+0075) denotes an escaped character.
	            if (cp === 0x5C) {
	                id = id.substr(0, id.length - 1);
	                if (this.source.charCodeAt(this.index) !== 0x75) {
	                    this.throwUnexpectedToken();
	                }
	                ++this.index;
	                if (this.source[this.index] === '{') {
	                    ++this.index;
	                    ch = this.scanUnicodeCodePointEscape();
	                }
	                else {
	                    ch = this.scanHexEscape('u');
	                    if (ch === null || ch === '\\' || !character_1.Character.isIdentifierPart(ch.charCodeAt(0))) {
	                        this.throwUnexpectedToken();
	                    }
	                }
	                id += ch;
	            }
	        }
	        return id;
	    };
	    Scanner.prototype.octalToDecimal = function (ch) {
	        // \0 is not octal escape sequence
	        var octal = (ch !== '0');
	        var code = octalValue(ch);
	        if (!this.eof() && character_1.Character.isOctalDigit(this.source.charCodeAt(this.index))) {
	            octal = true;
	            code = code * 8 + octalValue(this.source[this.index++]);
	            // 3 digits are only allowed when string starts
	            // with 0, 1, 2, 3
	            if ('0123'.indexOf(ch) >= 0 && !this.eof() && character_1.Character.isOctalDigit(this.source.charCodeAt(this.index))) {
	                code = code * 8 + octalValue(this.source[this.index++]);
	            }
	        }
	        return {
	            code: code,
	            octal: octal
	        };
	    };
	    // https://tc39.github.io/ecma262/#sec-names-and-keywords
	    Scanner.prototype.scanIdentifier = function () {
	        var type;
	        var start = this.index;
	        // Backslash (U+005C) starts an escaped character.
	        var id = (this.source.charCodeAt(start) === 0x5C) ? this.getComplexIdentifier() : this.getIdentifier();
	        // There is no keyword or literal with only one character.
	        // Thus, it must be an identifier.
	        if (id.length === 1) {
	            type = 3 /* Identifier */;
	        }
	        else if (this.isKeyword(id)) {
	            type = 4 /* Keyword */;
	        }
	        else if (id === 'null') {
	            type = 5 /* NullLiteral */;
	        }
	        else if (id === 'true' || id === 'false') {
	            type = 1 /* BooleanLiteral */;
	        }
	        else {
	            type = 3 /* Identifier */;
	        }
	        if (type !== 3 /* Identifier */ && (start + id.length !== this.index)) {
	            var restore = this.index;
	            this.index = start;
	            this.tolerateUnexpectedToken(messages_1.Messages.InvalidEscapedReservedWord);
	            this.index = restore;
	        }
	        return {
	            type: type,
	            value: id,
	            lineNumber: this.lineNumber,
	            lineStart: this.lineStart,
	            start: start,
	            end: this.index
	        };
	    };
	    // https://tc39.github.io/ecma262/#sec-punctuators
	    Scanner.prototype.scanPunctuator = function () {
	        var start = this.index;
	        // Check for most common single-character punctuators.
	        var str = this.source[this.index];
	        switch (str) {
	            case '(':
	            case '{':
	                if (str === '{') {
	                    this.curlyStack.push('{');
	                }
	                ++this.index;
	                break;
	            case '.':
	                ++this.index;
	                if (this.source[this.index] === '.' && this.source[this.index + 1] === '.') {
	                    // Spread operator: ...
	                    this.index += 2;
	                    str = '...';
	                }
	                break;
	            case '}':
	                ++this.index;
	                this.curlyStack.pop();
	                break;
	            case ')':
	            case ';':
	            case ',':
	            case '[':
	            case ']':
	            case ':':
	            case '?':
	            case '~':
	                ++this.index;
	                break;
	            default:
	                // 4-character punctuator.
	                str = this.source.substr(this.index, 4);
	                if (str === '>>>=') {
	                    this.index += 4;
	                }
	                else {
	                    // 3-character punctuators.
	                    str = str.substr(0, 3);
	                    if (str === '===' || str === '!==' || str === '>>>' ||
	                        str === '<<=' || str === '>>=' || str === '**=') {
	                        this.index += 3;
	                    }
	                    else {
	                        // 2-character punctuators.
	                        str = str.substr(0, 2);
	                        if (str === '&&' || str === '||' || str === '==' || str === '!=' ||
	                            str === '+=' || str === '-=' || str === '*=' || str === '/=' ||
	                            str === '++' || str === '--' || str === '<<' || str === '>>' ||
	                            str === '&=' || str === '|=' || str === '^=' || str === '%=' ||
	                            str === '<=' || str === '>=' || str === '=>' || str === '**') {
	                            this.index += 2;
	                        }
	                        else {
	                            // 1-character punctuators.
	                            str = this.source[this.index];
	                            if ('<>=!+-*%&|^/'.indexOf(str) >= 0) {
	                                ++this.index;
	                            }
	                        }
	                    }
	                }
	        }
	        if (this.index === start) {
	            this.throwUnexpectedToken();
	        }
	        return {
	            type: 7 /* Punctuator */,
	            value: str,
	            lineNumber: this.lineNumber,
	            lineStart: this.lineStart,
	            start: start,
	            end: this.index
	        };
	    };
	    // https://tc39.github.io/ecma262/#sec-literals-numeric-literals
	    Scanner.prototype.scanHexLiteral = function (start) {
	        var num = '';
	        while (!this.eof()) {
	            if (!character_1.Character.isHexDigit(this.source.charCodeAt(this.index))) {
	                break;
	            }
	            num += this.source[this.index++];
	        }
	        if (num.length === 0) {
	            this.throwUnexpectedToken();
	        }
	        if (character_1.Character.isIdentifierStart(this.source.charCodeAt(this.index))) {
	            this.throwUnexpectedToken();
	        }
	        return {
	            type: 6 /* NumericLiteral */,
	            value: parseInt('0x' + num, 16),
	            lineNumber: this.lineNumber,
	            lineStart: this.lineStart,
	            start: start,
	            end: this.index
	        };
	    };
	    Scanner.prototype.scanBinaryLiteral = function (start) {
	        var num = '';
	        var ch;
	        while (!this.eof()) {
	            ch = this.source[this.index];
	            if (ch !== '0' && ch !== '1') {
	                break;
	            }
	            num += this.source[this.index++];
	        }
	        if (num.length === 0) {
	            // only 0b or 0B
	            this.throwUnexpectedToken();
	        }
	        if (!this.eof()) {
	            ch = this.source.charCodeAt(this.index);
	            /* istanbul ignore else */
	            if (character_1.Character.isIdentifierStart(ch) || character_1.Character.isDecimalDigit(ch)) {
	                this.throwUnexpectedToken();
	            }
	        }
	        return {
	            type: 6 /* NumericLiteral */,
	            value: parseInt(num, 2),
	            lineNumber: this.lineNumber,
	            lineStart: this.lineStart,
	            start: start,
	            end: this.index
	        };
	    };
	    Scanner.prototype.scanOctalLiteral = function (prefix, start) {
	        var num = '';
	        var octal = false;
	        if (character_1.Character.isOctalDigit(prefix.charCodeAt(0))) {
	            octal = true;
	            num = '0' + this.source[this.index++];
	        }
	        else {
	            ++this.index;
	        }
	        while (!this.eof()) {
	            if (!character_1.Character.isOctalDigit(this.source.charCodeAt(this.index))) {
	                break;
	            }
	            num += this.source[this.index++];
	        }
	        if (!octal && num.length === 0) {
	            // only 0o or 0O
	            this.throwUnexpectedToken();
	        }
	        if (character_1.Character.isIdentifierStart(this.source.charCodeAt(this.index)) || character_1.Character.isDecimalDigit(this.source.charCodeAt(this.index))) {
	            this.throwUnexpectedToken();
	        }
	        return {
	            type: 6 /* NumericLiteral */,
	            value: parseInt(num, 8),
	            octal: octal,
	            lineNumber: this.lineNumber,
	            lineStart: this.lineStart,
	            start: start,
	            end: this.index
	        };
	    };
	    Scanner.prototype.isImplicitOctalLiteral = function () {
	        // Implicit octal, unless there is a non-octal digit.
	        // (Annex B.1.1 on Numeric Literals)
	        for (var i = this.index + 1; i < this.length; ++i) {
	            var ch = this.source[i];
	            if (ch === '8' || ch === '9') {
	                return false;
	            }
	            if (!character_1.Character.isOctalDigit(ch.charCodeAt(0))) {
	                return true;
	            }
	        }
	        return true;
	    };
	    Scanner.prototype.scanNumericLiteral = function () {
	        var start = this.index;
	        var ch = this.source[start];
	        assert_1.assert(character_1.Character.isDecimalDigit(ch.charCodeAt(0)) || (ch === '.'), 'Numeric literal must start with a decimal digit or a decimal point');
	        var num = '';
	        if (ch !== '.') {
	            num = this.source[this.index++];
	            ch = this.source[this.index];
	            // Hex number starts with '0x'.
	            // Octal number starts with '0'.
	            // Octal number in ES6 starts with '0o'.
	            // Binary number in ES6 starts with '0b'.
	            if (num === '0') {
	                if (ch === 'x' || ch === 'X') {
	                    ++this.index;
	                    return this.scanHexLiteral(start);
	                }
	                if (ch === 'b' || ch === 'B') {
	                    ++this.index;
	                    return this.scanBinaryLiteral(start);
	                }
	                if (ch === 'o' || ch === 'O') {
	                    return this.scanOctalLiteral(ch, start);
	                }
	                if (ch && character_1.Character.isOctalDigit(ch.charCodeAt(0))) {
	                    if (this.isImplicitOctalLiteral()) {
	                        return this.scanOctalLiteral(ch, start);
	                    }
	                }
	            }
	            while (character_1.Character.isDecimalDigit(this.source.charCodeAt(this.index))) {
	                num += this.source[this.index++];
	            }
	            ch = this.source[this.index];
	        }
	        if (ch === '.') {
	            num += this.source[this.index++];
	            while (character_1.Character.isDecimalDigit(this.source.charCodeAt(this.index))) {
	                num += this.source[this.index++];
	            }
	            ch = this.source[this.index];
	        }
	        if (ch === 'e' || ch === 'E') {
	            num += this.source[this.index++];
	            ch = this.source[this.index];
	            if (ch === '+' || ch === '-') {
	                num += this.source[this.index++];
	            }
	            if (character_1.Character.isDecimalDigit(this.source.charCodeAt(this.index))) {
	                while (character_1.Character.isDecimalDigit(this.source.charCodeAt(this.index))) {
	                    num += this.source[this.index++];
	                }
	            }
	            else {
	                this.throwUnexpectedToken();
	            }
	        }
	        if (character_1.Character.isIdentifierStart(this.source.charCodeAt(this.index))) {
	            this.throwUnexpectedToken();
	        }
	        return {
	            type: 6 /* NumericLiteral */,
	            value: parseFloat(num),
	            lineNumber: this.lineNumber,
	            lineStart: this.lineStart,
	            start: start,
	            end: this.index
	        };
	    };
	    // https://tc39.github.io/ecma262/#sec-literals-string-literals
	    Scanner.prototype.scanStringLiteral = function () {
	        var start = this.index;
	        var quote = this.source[start];
	        assert_1.assert((quote === '\'' || quote === '"'), 'String literal must starts with a quote');
	        ++this.index;
	        var octal = false;
	        var str = '';
	        while (!this.eof()) {
	            var ch = this.source[this.index++];
	            if (ch === quote) {
	                quote = '';
	                break;
	            }
	            else if (ch === '\\') {
	                ch = this.source[this.index++];
	                if (!ch || !character_1.Character.isLineTerminator(ch.charCodeAt(0))) {
	                    switch (ch) {
	                        case 'u':
	                            if (this.source[this.index] === '{') {
	                                ++this.index;
	                                str += this.scanUnicodeCodePointEscape();
	                            }
	                            else {
	                                var unescaped_1 = this.scanHexEscape(ch);
	                                if (unescaped_1 === null) {
	                                    this.throwUnexpectedToken();
	                                }
	                                str += unescaped_1;
	                            }
	                            break;
	                        case 'x':
	                            var unescaped = this.scanHexEscape(ch);
	                            if (unescaped === null) {
	                                this.throwUnexpectedToken(messages_1.Messages.InvalidHexEscapeSequence);
	                            }
	                            str += unescaped;
	                            break;
	                        case 'n':
	                            str += '\n';
	                            break;
	                        case 'r':
	                            str += '\r';
	                            break;
	                        case 't':
	                            str += '\t';
	                            break;
	                        case 'b':
	                            str += '\b';
	                            break;
	                        case 'f':
	                            str += '\f';
	                            break;
	                        case 'v':
	                            str += '\x0B';
	                            break;
	                        case '8':
	                        case '9':
	                            str += ch;
	                            this.tolerateUnexpectedToken();
	                            break;
	                        default:
	                            if (ch && character_1.Character.isOctalDigit(ch.charCodeAt(0))) {
	                                var octToDec = this.octalToDecimal(ch);
	                                octal = octToDec.octal || octal;
	                                str += String.fromCharCode(octToDec.code);
	                            }
	                            else {
	                                str += ch;
	                            }
	                            break;
	                    }
	                }
	                else {
	                    ++this.lineNumber;
	                    if (ch === '\r' && this.source[this.index] === '\n') {
	                        ++this.index;
	                    }
	                    this.lineStart = this.index;
	                }
	            }
	            else if (character_1.Character.isLineTerminator(ch.charCodeAt(0))) {
	                break;
	            }
	            else {
	                str += ch;
	            }
	        }
	        if (quote !== '') {
	            this.index = start;
	            this.throwUnexpectedToken();
	        }
	        return {
	            type: 8 /* StringLiteral */,
	            value: str,
	            octal: octal,
	            lineNumber: this.lineNumber,
	            lineStart: this.lineStart,
	            start: start,
	            end: this.index
	        };
	    };
	    // https://tc39.github.io/ecma262/#sec-template-literal-lexical-components
	    Scanner.prototype.scanTemplate = function () {
	        var cooked = '';
	        var terminated = false;
	        var start = this.index;
	        var head = (this.source[start] === '`');
	        var tail = false;
	        var rawOffset = 2;
	        ++this.index;
	        while (!this.eof()) {
	            var ch = this.source[this.index++];
	            if (ch === '`') {
	                rawOffset = 1;
	                tail = true;
	                terminated = true;
	                break;
	            }
	            else if (ch === '$') {
	                if (this.source[this.index] === '{') {
	                    this.curlyStack.push('${');
	                    ++this.index;
	                    terminated = true;
	                    break;
	                }
	                cooked += ch;
	            }
	            else if (ch === '\\') {
	                ch = this.source[this.index++];
	                if (!character_1.Character.isLineTerminator(ch.charCodeAt(0))) {
	                    switch (ch) {
	                        case 'n':
	                            cooked += '\n';
	                            break;
	                        case 'r':
	                            cooked += '\r';
	                            break;
	                        case 't':
	                            cooked += '\t';
	                            break;
	                        case 'u':
	                            if (this.source[this.index] === '{') {
	                                ++this.index;
	                                cooked += this.scanUnicodeCodePointEscape();
	                            }
	                            else {
	                                var restore = this.index;
	                                var unescaped_2 = this.scanHexEscape(ch);
	                                if (unescaped_2 !== null) {
	                                    cooked += unescaped_2;
	                                }
	                                else {
	                                    this.index = restore;
	                                    cooked += ch;
	                                }
	                            }
	                            break;
	                        case 'x':
	                            var unescaped = this.scanHexEscape(ch);
	                            if (unescaped === null) {
	                                this.throwUnexpectedToken(messages_1.Messages.InvalidHexEscapeSequence);
	                            }
	                            cooked += unescaped;
	                            break;
	                        case 'b':
	                            cooked += '\b';
	                            break;
	                        case 'f':
	                            cooked += '\f';
	                            break;
	                        case 'v':
	                            cooked += '\v';
	                            break;
	                        default:
	                            if (ch === '0') {
	                                if (character_1.Character.isDecimalDigit(this.source.charCodeAt(this.index))) {
	                                    // Illegal: \01 \02 and so on
	                                    this.throwUnexpectedToken(messages_1.Messages.TemplateOctalLiteral);
	                                }
	                                cooked += '\0';
	                            }
	                            else if (character_1.Character.isOctalDigit(ch.charCodeAt(0))) {
	                                // Illegal: \1 \2
	                                this.throwUnexpectedToken(messages_1.Messages.TemplateOctalLiteral);
	                            }
	                            else {
	                                cooked += ch;
	                            }
	                            break;
	                    }
	                }
	                else {
	                    ++this.lineNumber;
	                    if (ch === '\r' && this.source[this.index] === '\n') {
	                        ++this.index;
	                    }
	                    this.lineStart = this.index;
	                }
	            }
	            else if (character_1.Character.isLineTerminator(ch.charCodeAt(0))) {
	                ++this.lineNumber;
	                if (ch === '\r' && this.source[this.index] === '\n') {
	                    ++this.index;
	                }
	                this.lineStart = this.index;
	                cooked += '\n';
	            }
	            else {
	                cooked += ch;
	            }
	        }
	        if (!terminated) {
	            this.throwUnexpectedToken();
	        }
	        if (!head) {
	            this.curlyStack.pop();
	        }
	        return {
	            type: 10 /* Template */,
	            value: this.source.slice(start + 1, this.index - rawOffset),
	            cooked: cooked,
	            head: head,
	            tail: tail,
	            lineNumber: this.lineNumber,
	            lineStart: this.lineStart,
	            start: start,
	            end: this.index
	        };
	    };
	    // https://tc39.github.io/ecma262/#sec-literals-regular-expression-literals
	    Scanner.prototype.testRegExp = function (pattern, flags) {
	        // The BMP character to use as a replacement for astral symbols when
	        // translating an ES6 "u"-flagged pattern to an ES5-compatible
	        // approximation.
	        // Note: replacing with '\uFFFF' enables false positives in unlikely
	        // scenarios. For example, `[\u{1044f}-\u{10440}]` is an invalid
	        // pattern that would not be detected by this substitution.
	        var astralSubstitute = '\uFFFF';
	        var tmp = pattern;
	        var self = this;
	        if (flags.indexOf('u') >= 0) {
	            tmp = tmp
	                .replace(/\\u\{([0-9a-fA-F]+)\}|\\u([a-fA-F0-9]{4})/g, function ($0, $1, $2) {
	                var codePoint = parseInt($1 || $2, 16);
	                if (codePoint > 0x10FFFF) {
	                    self.throwUnexpectedToken(messages_1.Messages.InvalidRegExp);
	                }
	                if (codePoint <= 0xFFFF) {
	                    return String.fromCharCode(codePoint);
	                }
	                return astralSubstitute;
	            })
	                .replace(/[\uD800-\uDBFF][\uDC00-\uDFFF]/g, astralSubstitute);
	        }
	        // First, detect invalid regular expressions.
	        try {
	            RegExp(tmp);
	        }
	        catch (e) {
	            this.throwUnexpectedToken(messages_1.Messages.InvalidRegExp);
	        }
	        // Return a regular expression object for this pattern-flag pair, or
	        // `null` in case the current environment doesn't support the flags it
	        // uses.
	        try {
	            return new RegExp(pattern, flags);
	        }
	        catch (exception) {
	            /* istanbul ignore next */
	            return null;
	        }
	    };
	    Scanner.prototype.scanRegExpBody = function () {
	        var ch = this.source[this.index];
	        assert_1.assert(ch === '/', 'Regular expression literal must start with a slash');
	        var str = this.source[this.index++];
	        var classMarker = false;
	        var terminated = false;
	        while (!this.eof()) {
	            ch = this.source[this.index++];
	            str += ch;
	            if (ch === '\\') {
	                ch = this.source[this.index++];
	                // https://tc39.github.io/ecma262/#sec-literals-regular-expression-literals
	                if (character_1.Character.isLineTerminator(ch.charCodeAt(0))) {
	                    this.throwUnexpectedToken(messages_1.Messages.UnterminatedRegExp);
	                }
	                str += ch;
	            }
	            else if (character_1.Character.isLineTerminator(ch.charCodeAt(0))) {
	                this.throwUnexpectedToken(messages_1.Messages.UnterminatedRegExp);
	            }
	            else if (classMarker) {
	                if (ch === ']') {
	                    classMarker = false;
	                }
	            }
	            else {
	                if (ch === '/') {
	                    terminated = true;
	                    break;
	                }
	                else if (ch === '[') {
	                    classMarker = true;
	                }
	            }
	        }
	        if (!terminated) {
	            this.throwUnexpectedToken(messages_1.Messages.UnterminatedRegExp);
	        }
	        // Exclude leading and trailing slash.
	        return str.substr(1, str.length - 2);
	    };
	    Scanner.prototype.scanRegExpFlags = function () {
	        var str = '';
	        var flags = '';
	        while (!this.eof()) {
	            var ch = this.source[this.index];
	            if (!character_1.Character.isIdentifierPart(ch.charCodeAt(0))) {
	                break;
	            }
	            ++this.index;
	            if (ch === '\\' && !this.eof()) {
	                ch = this.source[this.index];
	                if (ch === 'u') {
	                    ++this.index;
	                    var restore = this.index;
	                    var char = this.scanHexEscape('u');
	                    if (char !== null) {
	                        flags += char;
	                        for (str += '\\u'; restore < this.index; ++restore) {
	                            str += this.source[restore];
	                        }
	                    }
	                    else {
	                        this.index = restore;
	                        flags += 'u';
	                        str += '\\u';
	                    }
	                    this.tolerateUnexpectedToken();
	                }
	                else {
	                    str += '\\';
	                    this.tolerateUnexpectedToken();
	                }
	            }
	            else {
	                flags += ch;
	                str += ch;
	            }
	        }
	        return flags;
	    };
	    Scanner.prototype.scanRegExp = function () {
	        var start = this.index;
	        var pattern = this.scanRegExpBody();
	        var flags = this.scanRegExpFlags();
	        var value = this.testRegExp(pattern, flags);
	        return {
	            type: 9 /* RegularExpression */,
	            value: '',
	            pattern: pattern,
	            flags: flags,
	            regex: value,
	            lineNumber: this.lineNumber,
	            lineStart: this.lineStart,
	            start: start,
	            end: this.index
	        };
	    };
	    Scanner.prototype.lex = function () {
	        if (this.eof()) {
	            return {
	                type: 2 /* EOF */,
	                value: '',
	                lineNumber: this.lineNumber,
	                lineStart: this.lineStart,
	                start: this.index,
	                end: this.index
	            };
	        }
	        var cp = this.source.charCodeAt(this.index);
	        if (character_1.Character.isIdentifierStart(cp)) {
	            return this.scanIdentifier();
	        }
	        // Very common: ( and ) and ;
	        if (cp === 0x28 || cp === 0x29 || cp === 0x3B) {
	            return this.scanPunctuator();
	        }
	        // String literal starts with single quote (U+0027) or double quote (U+0022).
	        if (cp === 0x27 || cp === 0x22) {
	            return this.scanStringLiteral();
	        }
	        // Dot (.) U+002E can also start a floating-point number, hence the need
	        // to check the next character.
	        if (cp === 0x2E) {
	            if (character_1.Character.isDecimalDigit(this.source.charCodeAt(this.index + 1))) {
	                return this.scanNumericLiteral();
	            }
	            return this.scanPunctuator();
	        }
	        if (character_1.Character.isDecimalDigit(cp)) {
	            return this.scanNumericLiteral();
	        }
	        // Template literals start with ` (U+0060) for template head
	        // or } (U+007D) for template middle or template tail.
	        if (cp === 0x60 || (cp === 0x7D && this.curlyStack[this.curlyStack.length - 1] === '${')) {
	            return this.scanTemplate();
	        }
	        // Possible identifier start in a surrogate pair.
	        if (cp >= 0xD800 && cp < 0xDFFF) {
	            if (character_1.Character.isIdentifierStart(this.codePointAt(this.index))) {
	                return this.scanIdentifier();
	            }
	        }
	        return this.scanPunctuator();
	    };
	    return Scanner;
	}());
	exports.Scanner = Scanner;


/***/ },
/* 13 */
/***/ function(module, exports) {

	"use strict";
	Object.defineProperty(exports, "__esModule", { value: true });
	exports.TokenName = {};
	exports.TokenName[1 /* BooleanLiteral */] = 'Boolean';
	exports.TokenName[2 /* EOF */] = '<end>';
	exports.TokenName[3 /* Identifier */] = 'Identifier';
	exports.TokenName[4 /* Keyword */] = 'Keyword';
	exports.TokenName[5 /* NullLiteral */] = 'Null';
	exports.TokenName[6 /* NumericLiteral */] = 'Numeric';
	exports.TokenName[7 /* Punctuator */] = 'Punctuator';
	exports.TokenName[8 /* StringLiteral */] = 'String';
	exports.TokenName[9 /* RegularExpression */] = 'RegularExpression';
	exports.TokenName[10 /* Template */] = 'Template';


/***/ },
/* 14 */
/***/ function(module, exports) {

	"use strict";
	// Generated by generate-xhtml-entities.js. DO NOT MODIFY!
	Object.defineProperty(exports, "__esModule", { value: true });
	exports.XHTMLEntities = {
	    quot: '\u0022',
	    amp: '\u0026',
	    apos: '\u0027',
	    gt: '\u003E',
	    nbsp: '\u00A0',
	    iexcl: '\u00A1',
	    cent: '\u00A2',
	    pound: '\u00A3',
	    curren: '\u00A4',
	    yen: '\u00A5',
	    brvbar: '\u00A6',
	    sect: '\u00A7',
	    uml: '\u00A8',
	    copy: '\u00A9',
	    ordf: '\u00AA',
	    laquo: '\u00AB',
	    not: '\u00AC',
	    shy: '\u00AD',
	    reg: '\u00AE',
	    macr: '\u00AF',
	    deg: '\u00B0',
	    plusmn: '\u00B1',
	    sup2: '\u00B2',
	    sup3: '\u00B3',
	    acute: '\u00B4',
	    micro: '\u00B5',
	    para: '\u00B6',
	    middot: '\u00B7',
	    cedil: '\u00B8',
	    sup1: '\u00B9',
	    ordm: '\u00BA',
	    raquo: '\u00BB',
	    frac14: '\u00BC',
	    frac12: '\u00BD',
	    frac34: '\u00BE',
	    iquest: '\u00BF',
	    Agrave: '\u00C0',
	    Aacute: '\u00C1',
	    Acirc: '\u00C2',
	    Atilde: '\u00C3',
	    Auml: '\u00C4',
	    Aring: '\u00C5',
	    AElig: '\u00C6',
	    Ccedil: '\u00C7',
	    Egrave: '\u00C8',
	    Eacute: '\u00C9',
	    Ecirc: '\u00CA',
	    Euml: '\u00CB',
	    Igrave: '\u00CC',
	    Iacute: '\u00CD',
	    Icirc: '\u00CE',
	    Iuml: '\u00CF',
	    ETH: '\u00D0',
	    Ntilde: '\u00D1',
	    Ograve: '\u00D2',
	    Oacute: '\u00D3',
	    Ocirc: '\u00D4',
	    Otilde: '\u00D5',
	    Ouml: '\u00D6',
	    times: '\u00D7',
	    Oslash: '\u00D8',
	    Ugrave: '\u00D9',
	    Uacute: '\u00DA',
	    Ucirc: '\u00DB',
	    Uuml: '\u00DC',
	    Yacute: '\u00DD',
	    THORN: '\u00DE',
	    szlig: '\u00DF',
	    agrave: '\u00E0',
	    aacute: '\u00E1',
	    acirc: '\u00E2',
	    atilde: '\u00E3',
	    auml: '\u00E4',
	    aring: '\u00E5',
	    aelig: '\u00E6',
	    ccedil: '\u00E7',
	    egrave: '\u00E8',
	    eacute: '\u00E9',
	    ecirc: '\u00EA',
	    euml: '\u00EB',
	    igrave: '\u00EC',
	    iacute: '\u00ED',
	    icirc: '\u00EE',
	    iuml: '\u00EF',
	    eth: '\u00F0',
	    ntilde: '\u00F1',
	    ograve: '\u00F2',
	    oacute: '\u00F3',
	    ocirc: '\u00F4',
	    otilde: '\u00F5',
	    ouml: '\u00F6',
	    divide: '\u00F7',
	    oslash: '\u00F8',
	    ugrave: '\u00F9',
	    uacute: '\u00FA',
	    ucirc: '\u00FB',
	    uuml: '\u00FC',
	    yacute: '\u00FD',
	    thorn: '\u00FE',
	    yuml: '\u00FF',
	    OElig: '\u0152',
	    oelig: '\u0153',
	    Scaron: '\u0160',
	    scaron: '\u0161',
	    Yuml: '\u0178',
	    fnof: '\u0192',
	    circ: '\u02C6',
	    tilde: '\u02DC',
	    Alpha: '\u0391',
	    Beta: '\u0392',
	    Gamma: '\u0393',
	    Delta: '\u0394',
	    Epsilon: '\u0395',
	    Zeta: '\u0396',
	    Eta: '\u0397',
	    Theta: '\u0398',
	    Iota: '\u0399',
	    Kappa: '\u039A',
	    Lambda: '\u039B',
	    Mu: '\u039C',
	    Nu: '\u039D',
	    Xi: '\u039E',
	    Omicron: '\u039F',
	    Pi: '\u03A0',
	    Rho: '\u03A1',
	    Sigma: '\u03A3',
	    Tau: '\u03A4',
	    Upsilon: '\u03A5',
	    Phi: '\u03A6',
	    Chi: '\u03A7',
	    Psi: '\u03A8',
	    Omega: '\u03A9',
	    alpha: '\u03B1',
	    beta: '\u03B2',
	    gamma: '\u03B3',
	    delta: '\u03B4',
	    epsilon: '\u03B5',
	    zeta: '\u03B6',
	    eta: '\u03B7',
	    theta: '\u03B8',
	    iota: '\u03B9',
	    kappa: '\u03BA',
	    lambda: '\u03BB',
	    mu: '\u03BC',
	    nu: '\u03BD',
	    xi: '\u03BE',
	    omicron: '\u03BF',
	    pi: '\u03C0',
	    rho: '\u03C1',
	    sigmaf: '\u03C2',
	    sigma: '\u03C3',
	    tau: '\u03C4',
	    upsilon: '\u03C5',
	    phi: '\u03C6',
	    chi: '\u03C7',
	    psi: '\u03C8',
	    omega: '\u03C9',
	    thetasym: '\u03D1',
	    upsih: '\u03D2',
	    piv: '\u03D6',
	    ensp: '\u2002',
	    emsp: '\u2003',
	    thinsp: '\u2009',
	    zwnj: '\u200C',
	    zwj: '\u200D',
	    lrm: '\u200E',
	    rlm: '\u200F',
	    ndash: '\u2013',
	    mdash: '\u2014',
	    lsquo: '\u2018',
	    rsquo: '\u2019',
	    sbquo: '\u201A',
	    ldquo: '\u201C',
	    rdquo: '\u201D',
	    bdquo: '\u201E',
	    dagger: '\u2020',
	    Dagger: '\u2021',
	    bull: '\u2022',
	    hellip: '\u2026',
	    permil: '\u2030',
	    prime: '\u2032',
	    Prime: '\u2033',
	    lsaquo: '\u2039',
	    rsaquo: '\u203A',
	    oline: '\u203E',
	    frasl: '\u2044',
	    euro: '\u20AC',
	    image: '\u2111',
	    weierp: '\u2118',
	    real: '\u211C',
	    trade: '\u2122',
	    alefsym: '\u2135',
	    larr: '\u2190',
	    uarr: '\u2191',
	    rarr: '\u2192',
	    darr: '\u2193',
	    harr: '\u2194',
	    crarr: '\u21B5',
	    lArr: '\u21D0',
	    uArr: '\u21D1',
	    rArr: '\u21D2',
	    dArr: '\u21D3',
	    hArr: '\u21D4',
	    forall: '\u2200',
	    part: '\u2202',
	    exist: '\u2203',
	    empty: '\u2205',
	    nabla: '\u2207',
	    isin: '\u2208',
	    notin: '\u2209',
	    ni: '\u220B',
	    prod: '\u220F',
	    sum: '\u2211',
	    minus: '\u2212',
	    lowast: '\u2217',
	    radic: '\u221A',
	    prop: '\u221D',
	    infin: '\u221E',
	    ang: '\u2220',
	    and: '\u2227',
	    or: '\u2228',
	    cap: '\u2229',
	    cup: '\u222A',
	    int: '\u222B',
	    there4: '\u2234',
	    sim: '\u223C',
	    cong: '\u2245',
	    asymp: '\u2248',
	    ne: '\u2260',
	    equiv: '\u2261',
	    le: '\u2264',
	    ge: '\u2265',
	    sub: '\u2282',
	    sup: '\u2283',
	    nsub: '\u2284',
	    sube: '\u2286',
	    supe: '\u2287',
	    oplus: '\u2295',
	    otimes: '\u2297',
	    perp: '\u22A5',
	    sdot: '\u22C5',
	    lceil: '\u2308',
	    rceil: '\u2309',
	    lfloor: '\u230A',
	    rfloor: '\u230B',
	    loz: '\u25CA',
	    spades: '\u2660',
	    clubs: '\u2663',
	    hearts: '\u2665',
	    diams: '\u2666',
	    lang: '\u27E8',
	    rang: '\u27E9'
	};


/***/ },
/* 15 */
/***/ function(module, exports, __webpack_require__) {

	"use strict";
	Object.defineProperty(exports, "__esModule", { value: true });
	var error_handler_1 = __webpack_require__(10);
	var scanner_1 = __webpack_require__(12);
	var token_1 = __webpack_require__(13);
	var Reader = (function () {
	    function Reader() {
	        this.values = [];
	        this.curly = this.paren = -1;
	    }
	    // A function following one of those tokens is an expression.
	    Reader.prototype.beforeFunctionExpression = function (t) {
	        return ['(', '{', '[', 'in', 'typeof', 'instanceof', 'new',
	            'return', 'case', 'delete', 'throw', 'void',
	            // assignment operators
	            '=', '+=', '-=', '*=', '**=', '/=', '%=', '<<=', '>>=', '>>>=',
	            '&=', '|=', '^=', ',',
	            // binary/unary operators
	            '+', '-', '*', '**', '/', '%', '++', '--', '<<', '>>', '>>>', '&',
	            '|', '^', '!', '~', '&&', '||', '?', ':', '===', '==', '>=',
	            '<=', '<', '>', '!=', '!=='].indexOf(t) >= 0;
	    };
	    // Determine if forward slash (/) is an operator or part of a regular expression
	    // https://github.com/mozilla/sweet.js/wiki/design
	    Reader.prototype.isRegexStart = function () {
	        var previous = this.values[this.values.length - 1];
	        var regex = (previous !== null);
	        switch (previous) {
	            case 'this':
	            case ']':
	                regex = false;
	                break;
	            case ')':
	                var keyword = this.values[this.paren - 1];
	                regex = (keyword === 'if' || keyword === 'while' || keyword === 'for' || keyword === 'with');
	                break;
	            case '}':
	                // Dividing a function by anything makes little sense,
	                // but we have to check for that.
	                regex = false;
	                if (this.values[this.curly - 3] === 'function') {
	                    // Anonymous function, e.g. function(){} /42
	                    var check = this.values[this.curly - 4];
	                    regex = check ? !this.beforeFunctionExpression(check) : false;
	                }
	                else if (this.values[this.curly - 4] === 'function') {
	                    // Named function, e.g. function f(){} /42/
	                    var check = this.values[this.curly - 5];
	                    regex = check ? !this.beforeFunctionExpression(check) : true;
	                }
	                break;
	            default:
	                break;
	        }
	        return regex;
	    };
	    Reader.prototype.push = function (token) {
	        if (token.type === 7 /* Punctuator */ || token.type === 4 /* Keyword */) {
	            if (token.value === '{') {
	                this.curly = this.values.length;
	            }
	            else if (token.value === '(') {
	                this.paren = this.values.length;
	            }
	            this.values.push(token.value);
	        }
	        else {
	            this.values.push(null);
	        }
	    };
	    return Reader;
	}());
	var Tokenizer = (function () {
	    function Tokenizer(code, config) {
	        this.errorHandler = new error_handler_1.ErrorHandler();
	        this.errorHandler.tolerant = config ? (typeof config.tolerant === 'boolean' && config.tolerant) : false;
	        this.scanner = new scanner_1.Scanner(code, this.errorHandler);
	        this.scanner.trackComment = config ? (typeof config.comment === 'boolean' && config.comment) : false;
	        this.trackRange = config ? (typeof config.range === 'boolean' && config.range) : false;
	        this.trackLoc = config ? (typeof config.loc === 'boolean' && config.loc) : false;
	        this.buffer = [];
	        this.reader = new Reader();
	    }
	    Tokenizer.prototype.errors = function () {
	        return this.errorHandler.errors;
	    };
	    Tokenizer.prototype.getNextToken = function () {
	        if (this.buffer.length === 0) {
	            var comments = this.scanner.scanComments();
	            if (this.scanner.trackComment) {
	                for (var i = 0; i < comments.length; ++i) {
	                    var e = comments[i];
	                    var value = this.scanner.source.slice(e.slice[0], e.slice[1]);
	                    var comment = {
	                        type: e.multiLine ? 'BlockComment' : 'LineComment',
	                        value: value
	                    };
	                    if (this.trackRange) {
	                        comment.range = e.range;
	                    }
	                    if (this.trackLoc) {
	                        comment.loc = e.loc;
	                    }
	                    this.buffer.push(comment);
	                }
	            }
	            if (!this.scanner.eof()) {
	                var loc = void 0;
	                if (this.trackLoc) {
	                    loc = {
	                        start: {
	                            line: this.scanner.lineNumber,
	                            column: this.scanner.index - this.scanner.lineStart
	                        },
	                        end: {}
	                    };
	                }
	                var startRegex = (this.scanner.source[this.scanner.index] === '/') && this.reader.isRegexStart();
	                var token = startRegex ? this.scanner.scanRegExp() : this.scanner.lex();
	                this.reader.push(token);
	                var entry = {
	                    type: token_1.TokenName[token.type],
	                    value: this.scanner.source.slice(token.start, token.end)
	                };
	                if (this.trackRange) {
	                    entry.range = [token.start, token.end];
	                }
	                if (this.trackLoc) {
	                    loc.end = {
	                        line: this.scanner.lineNumber,
	                        column: this.scanner.index - this.scanner.lineStart
	                    };
	                    entry.loc = loc;
	                }
	                if (token.type === 9 /* RegularExpression */) {
	                    var pattern = token.pattern;
	                    var flags = token.flags;
	                    entry.regex = { pattern: pattern, flags: flags };
	                }
	                this.buffer.push(entry);
	            }
	        }
	        return this.buffer.shift();
	    };
	    return Tokenizer;
	}());
	exports.Tokenizer = Tokenizer;


/***/ }
/******/ ])
});
;
});

var esprima$1 = /*@__PURE__*/getDefaultExportFromCjs(esprima);

function buildGeoSource(geo) {
  return "\nfloat surfaceDistance(vec3 p) {\n\tvec3 normal = vec3(0.0,1.0,0.0);\n\tvec3 mouseIntersect = vec3(0.0,1.0,0.0);\n    float d = 100.0;\n    vec3 op = p;\n".concat(geo, "\n    return scope_0_d;\n}");
}

function buildColorSource(col, useLighting) {
  var lgt = useLighting ? '' : '    return scope_0_material.albedo;';
  return "\nvec3 shade(vec3 p, vec3 normal) {\n    float d = 100.0;\n    vec3 op = p;\n\tvec3 lightDirection = vec3(0.0, 1.0, 0.0);\n\tvec3 backgroundColor = vec3(1.0, 1.0, 1.0);\n\tvec3 mouseIntersect = vec3(0.0,1.0,0.0);\n\t#ifdef USE_PBR\n\tMaterial material = Material(vec3(1.0),0.5,0.7,1.0);\n\tMaterial selectedMaterial = Material(vec3(1.0),0.5,0.7,1.0);\n\t#else\n\tfloat light = 1.0;\n\tfloat occ = 1.0;\n    vec3 color = vec3(1.0,1.0,1.0);\n\tvec3 selectedColor = vec3(1.0,1.0,1.0);\n\t#endif\n".concat(col, "\n").concat(lgt, "\n\t#ifdef USE_PBR\n\treturn pbrLighting(\n\t\tworldPos.xyz,\n\t\tnormal,\n\t\tlightDirection,\n\t\tscope_0_material,\n\t\tbackgroundColor\n\t\t);\n\t#else\n\treturn scope_0_material.albedo*simpleLighting(p, normal, lightDirection, );*occ;\n\t#endif\n}");
} // Converts binary math operators to our own version


function replaceBinaryOp(syntaxTree) {
  if (_typeof(syntaxTree) === 'object') {
    for (var node in syntaxTree) {
      if (syntaxTree.hasOwnProperty(node)) {
        replaceBinaryOp(syntaxTree[node]);
      }
    }
  }

  if (syntaxTree !== null && syntaxTree['type'] === 'BinaryExpression') {
    var op = syntaxTree['operator'];

    if (op === '*' || op === '/' || op === '-' || op === '+') {
      if (op === '*') {
        syntaxTree['callee'] = {
          type: 'Identifier',
          name: 'mult'
        };
      } else if (op === '/') {
        syntaxTree['callee'] = {
          type: 'Identifier',
          name: 'divide'
        };
      } else if (op === '-') {
        syntaxTree['callee'] = {
          type: 'Identifier',
          name: 'sub'
        };
      } else if (op === '+') {
        syntaxTree['callee'] = {
          type: 'Identifier',
          name: 'add'
        };
      }

      syntaxTree['type'] = 'CallExpression';
      syntaxTree['arguments'] = [syntaxTree['left'], syntaxTree['right']];
      syntaxTree['operator'] = undefined;
    }
  }
}

function replaceOperatorOverload(syntaxTree) {
  try {
    if (syntaxTree && _typeof(syntaxTree) === "object") {
      for (var node in syntaxTree) {
        if (syntaxTree.hasOwnProperty(node)) {
          replaceOperatorOverload(syntaxTree[node]);
        }
      }
    }

    if (syntaxTree && _typeof(syntaxTree) === "object" && 'type' in syntaxTree && syntaxTree.type === 'ExpressionStatement' && 'expression' in syntaxTree && syntaxTree.expression.type === 'AssignmentExpression') {
      var op = syntaxTree.expression.operator;

      if (op === '+=' || op === '-=' || op === '/=' || op === '*=' || op === '%=') {
        syntaxTree.expression.operator = "=";
        syntaxTree.expression.right = {
          type: 'BinaryExpression',
          left: syntaxTree.expression.left,
          right: syntaxTree.expression.right
        };

        if (op === '+=') {
          syntaxTree.expression.right.operator = '+';
        } else if (op === '-=') {
          syntaxTree.expression.right.operator = '-';
        } else if (op === '/=') {
          syntaxTree.expression.right.operator = '/';
        } else if (op === '*=') {
          syntaxTree.expression.right.operator = '*';
        } else if (op === '%=') {
          syntaxTree.expression.right.operator = '%';
        }
      }
    }
  } catch (e) {
    console.error(e);
    throw e;
  }
}

function replaceSliderInput(syntaxTree) {
  try {
    if (syntaxTree && _typeof(syntaxTree) === "object") {
      for (var node in syntaxTree) {
        if (syntaxTree.hasOwnProperty(node)) {
          replaceSliderInput(syntaxTree[node]);
        }
      }
    }

    if (syntaxTree && _typeof(syntaxTree) === "object" && 'type' in syntaxTree && syntaxTree['type'] === 'VariableDeclaration') {
      var d = syntaxTree['declarations'][0];
      var name = d.id.name;

      if (d && d.init && d.init.callee !== undefined && (d.init.callee.name === 'input' || d.init.callee.name === 'input2D')) {
        d.init.arguments.unshift({
          type: "Literal",
          value: name,
          raw: name
        });
      }
    }
  } catch (e) {
    console.error(e);
    throw e;
  }
}

function uniformsToGLSL(uniforms) {
  var uniformsHeader = '';

  for (var i = 0; i < uniforms.length; i++) {
    var uniform = uniforms[i];
    uniformsHeader += "uniform ".concat(uniform.type, " ").concat(uniform.name, ";\n");
  }

  return uniformsHeader;
}
function baseUniforms() {
  return [{
    name: 'time',
    type: 'float',
    value: 0.0
  }, {
    name: 'opacity',
    type: 'float',
    value: 1.0
  }, {
    name: '_scale',
    type: 'float',
    value: 1.0
  }, // {name:'sculptureCenter', type: 'vec3', value: [0,0,0]},
  {
    name: 'mouse',
    type: 'vec3',
    value: [0.5, 0.5, 0.5]
  }, {
    name: 'stepSize',
    type: 'float',
    value: 0.85
  }, {
    name: 'resolution',
    type: 'vec2',
    value: [800, 600]
  }];
}
function bindStaticData(staticData, spCode) {
  spCode = convertFunctionToString(spCode);
  return "const staticData = JSON.parse(`".concat(JSON.stringify(staticData), "`)\n") + spCode;
}
function replaceMathOps(codeSrc) {
  var tree = esprima.parse(codeSrc);
  replaceOperatorOverload(tree);
  replaceBinaryOp(tree);
  replaceSliderInput(tree);
  return escodegen.generate(tree);
}
function sculptToGLSL(userProvidedSrc) {
  var PI = Math.PI;
  var TWO_PI = Math.PI * 2;
  var TAU = TWO_PI;
  var debug = false;
  userProvidedSrc = replaceMathOps(userProvidedSrc);

  if (debug) {
    console.log('tree', tree);
  }

  var generatedJSFuncsSource = "";
  var geoSrc = "";
  var colorSrc = "";
  var userGLSL = "";
  var varCount = 0;
  var primCount = 0;
  var stateCount = 0;
  var useLighting = true;
  var enable2DFlag = false;
  var stateStack = [];
  var uniforms = baseUniforms();
  var stepSizeConstant = 0.85;
  var maxIterations = 300; ////////////////////////////////////////////////////////////
  // Generates JS from headers referenced in the bindings.js

  var dimsMapping = {
    'float': 1,
    'vec2': 2,
    'vec3': 3,
    'vec4': 4
  };

  function glslFunc(src) {
    userGLSL += src + '\n';
    var state = glslParser.runParse(src, {});

    if (state.errors.length) {
      state.errors.forEach(function (err) {
        compileError("glsl error: ".concat(err));
      });
    }

    var func = state.ast[state.ast.length - 1];
    var proto = func.proto_type;
    var funcName = proto.identifier;
    var params = proto.parameters;
    var returnType = proto.return_type.specifier.type_name;
    var funcArgCount = params.length;

    var boundFunc = function boundFunc() {
      if (arguments.length !== funcArgCount) {
        compileError("Incorrect number of arguments: function ".concat(funcName, " takes ").concat(funcArgCount, " and was given ").concat(arguments.length));
      }

      var expression = funcName + "(";

      for (var i = 0; i < funcArgCount; i++) {
        var userParam = i < 0 || arguments.length <= i ? undefined : arguments[i];
        var requiredParam = params[i];
        var reqDim = requiredParam.type.specifier.type_specifier.size;

        if (reqDim === 1) {
          ensureScalar(funcName, userParam);
        } else {
          ensureDims(funcName, reqDim, userParam);
        }

        expression += collapseToString(userParam);
        if (i < funcArgCount - 1) expression += ", ";
      }

      expression += ")";
      return makeVarWithDims(expression, proto.return_type.specifier.type_specifier.size, false);
    };

    return boundFunc;
  }

  function glslFuncES3(src) {
    userGLSL += src + '\n';
    var parsedSrc;

    try {
      parsedSrc = dist.parser.parse(src);
    } catch (e) {
      compileError("glsl error in glslFuncES3 when parsing: ".concat(e));
    }

    var prototype = parsedSrc.program[parsedSrc.program.length - 1].prototype;
    var funcName = prototype.header.name.identifier;
    var returnType = prototype.header.returnType.specifier.specifier.token;
    var params = prototype.parameters;
    var checkTypes = returnType === 'void' || returnType in dimsMapping;

    if (!checkTypes) {
      compileError("glsl error: glslFuncES3 currently supports binding to ".concat(Object.keys(dimsMapping), " Return type was ").concat(returnType));
    }

    params.forEach(function (param) {
      var type = param.declaration.specifier.specifier.token;
      checkTypes = checkTypes && type in dimsMapping;

      if (debug) {
        console.log('glslFunc', funcName, type, checkTypes);
      }

      if (!checkTypes) {
        compileError("glsl error: glslFuncES3 currently supports binding to ".concat(Object.keys(dimsMapping), " param type was ").concat(type));
      }
    });
    var funcArgCount = params.length;

    var boundFunc = function boundFunc() {
      if (arguments.length !== funcArgCount) {
        compileError("Incorrect number of arguments: function ".concat(funcName, " takes ").concat(funcArgCount, " and was given ").concat(arguments.length));
      }

      var expression = funcName + "(";

      for (var i = 0; i < funcArgCount; i++) {
        var userParam = i < 0 || arguments.length <= i ? undefined : arguments[i];
        var type = params[i].declaration.specifier.specifier.token;
        var reqDim = dimsMapping[type];

        if (reqDim === 1) {
          ensureScalar(funcName, userParam);
        } else {
          ensureDims(funcName, reqDim, userParam);
        }

        expression += collapseToString(userParam);
        if (i < funcArgCount - 1) expression += ", ";
      }

      expression += ")";
      return makeVarWithDims(expression, dimsMapping[returnType], false);
    };

    return boundFunc;
  }

  function glslSDF(src) {
    var sdfFunc = glslFunc(src);
    return function () {
      for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
        args[_key] = arguments[_key];
      }

      setSDF(sdfFunc.apply(void 0, [getSpace()].concat(args)));
    };
  } ////////////// DESTRUCT SDFs


  var boundSDFs = {};

  for (var _i = 0, _Object$entries = Object.entries(sdfs); _i < _Object$entries.length; _i++) {
    var _Object$entries$_i = _slicedToArray(_Object$entries[_i], 2),
        key = _Object$entries$_i[0],
        value = _Object$entries$_i[1];

    boundSDFs[key] = glslSDF(value);
  }

  var boxFrame = boundSDFs.boxFrame,
      link = boundSDFs.link,
      cappedTorus = boundSDFs.cappedTorus; //

  function box(arg_0, arg_1, arg_2) {
    if (arg_1 !== undefined) {
      ensureScalar('box', arg_0);
      ensureScalar('box', arg_1);
      ensureScalar('box', arg_2);
      applyMode("box(".concat(getCurrentState().p, ", ").concat(collapseToString(arg_0), ", ").concat(collapseToString(arg_1), ", ").concat(collapseToString(arg_2), ")"));
    } else if (arg_0.type === 'vec3') {
      applyMode("box(".concat(getCurrentState().p, ", ").concat(collapseToString(arg_0), ")"));
    } else {
      compileError("'box' accepts either an x, y, z, or a vec3");
    }
  }

  function torus(arg_0, arg_1) {
    overloadVec2GeomFunc('torus', arg_0, arg_1);
  }

  function cylinder(arg_0, arg_1) {
    overloadVec2GeomFunc('cylinder', arg_0, arg_1);
  }

  function overloadVec2GeomFunc(funcName, arg_0, arg_1) {
    if (arg_1 !== undefined) {
      ensureScalar(funcName, arg_0);
      ensureScalar(funcName, arg_1);
      applyMode("".concat(funcName, "(").concat(getCurrentState().p, ", ").concat(collapseToString(arg_0), ", ").concat(collapseToString(arg_1), ")"));
    } else if (arg_0.type === 'vec2') {
      applyMode("".concat(funcName, "(").concat(getCurrentState().p, ", ").concat(collapseToString(arg_0), ")"));
    } else {
      compileError("'".concat(funcName, "' accepts either an x, y or a vec2"));
    }
  }

  var primitivesJS = "";

  for (var _i2 = 0, _Object$entries2 = Object.entries(geometryFunctions); _i2 < _Object$entries2.length; _i2++) {
    var _Object$entries2$_i = _slicedToArray(_Object$entries2[_i2], 2),
        funcName = _Object$entries2$_i[0],
        body = _Object$entries2$_i[1];

    var argList = body['args'];
    primitivesJS += "function " + funcName + "(";

    for (var argIdx = 0; argIdx < argList.length; argIdx++) {
      if (argIdx !== 0) primitivesJS += ", ";
      primitivesJS += "arg_" + argIdx;
    }

    primitivesJS += ") {\n";
    var argIdxB = 0;

    var _iterator = _createForOfIteratorHelper(argList),
        _step;

    try {
      for (_iterator.s(); !(_step = _iterator.n()).done;) {
        var argDim = _step.value;

        if (argDim === 1) {
          primitivesJS += "    ensureScalar(\"" + funcName + "\", arg_" + argIdxB + ");\n";
        }

        argIdxB += 1;
      }
    } catch (err) {
      _iterator.e(err);
    } finally {
      _iterator.f();
    }

    primitivesJS += "    applyMode(\"" + funcName + "(\"+getCurrentState().p+\", \" + ";

    for (var _argIdx = 0; _argIdx < argList.length; _argIdx++) {
      primitivesJS += "collapseToString(arg_" + _argIdx + ") + ";
      if (_argIdx < argList.length - 1) primitivesJS += "\", \" + ";
    }

    primitivesJS += "\")\");\n}\n\n";
  }

  generatedJSFuncsSource += primitivesJS;

  function generateGLSLWrapper(funcJSON) {
    var wrapperSrc = "";

    for (var _i3 = 0, _Object$entries3 = Object.entries(funcJSON); _i3 < _Object$entries3.length; _i3++) {
      var _Object$entries3$_i = _slicedToArray(_Object$entries3[_i3], 2),
          _funcName = _Object$entries3$_i[0],
          _body = _Object$entries3$_i[1];

      var _argList = _body['args'];
      var returnType = _body['ret'];
      wrapperSrc += "function " + _funcName + "(";

      for (var _argIdx2 = 0; _argIdx2 < _argList.length; _argIdx2++) {
        if (_argIdx2 !== 0) wrapperSrc += ", ";
        wrapperSrc += "arg_" + _argIdx2;
      }

      wrapperSrc += ") {\n";
      var _argIdxB = 0;

      var _iterator2 = _createForOfIteratorHelper(_argList),
          _step2;

      try {
        for (_iterator2.s(); !(_step2 = _iterator2.n()).done;) {
          var arg = _step2.value;
          wrapperSrc += "    arg_" + _argIdxB + " = tryMakeNum(arg_" + _argIdxB + ");\n";
          _argIdxB += 1;
        } // debug here

      } catch (err) {
        _iterator2.e(err);
      } finally {
        _iterator2.f();
      }

      wrapperSrc += "    return new makeVarWithDims(\"" + _funcName + "(\" + ";

      for (var _argIdx3 = 0; _argIdx3 < _argList.length; _argIdx3++) {
        wrapperSrc += "arg_" + _argIdx3 + " + ";
        if (_argIdx3 < _argList.length - 1) wrapperSrc += "\", \" + ";
      }

      wrapperSrc += "\")\", " + returnType + ");\n}\n";
    }

    return wrapperSrc;
  }

  function mix(arg_0, arg_1, arg_2) {
    ensureSameDims('mix', arg_0, arg_1);

    if (arg_2.dims !== 1 && arg_2.dims !== arg_0.dims) {
      compileError("'mix' third argument must be float or match dim of first args");
    }

    ensureScalar('mix', arg_2);

    if (typeof arg_1 == 'number' || arg_1.type == 'float') {
      arg_0 = tryMakeNum(arg_0);
      arg_1 = tryMakeNum(arg_1);
    }

    arg_2 = tryMakeNum(arg_2);
    return new makeVarWithDims("mix(".concat(collapseToString(arg_0), ", ").concat(collapseToString(arg_1), ", ").concat(collapseToString(arg_2), ")"), arg_0.dims);
  }

  function pow(arg_0, arg_1) {
    if (typeof arg_1 == 'number' || arg_1.type == 'float') {
      arg_0 = tryMakeNum(arg_0);
      arg_1 = tryMakeNum(arg_1);
    }

    ensureSameDims('pow', arg_0, arg_1);
    return new makeVarWithDims("pow(".concat(collapseToString(arg_0), ", ").concat(collapseToString(arg_1), ")"), arg_0.dims);
  }

  function ensureSameDims(funcName) {
    for (var _len2 = arguments.length, args = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
      args[_key2 - 1] = arguments[_key2];
    }

    var dims = args.map(function (arg) {
      if (arg.type === undefined) {
        return _typeof(arg); //compileError("'"+funcName+"' expected a vector");
      }

      return arg.dim;
    });
    var initialDim = dims[0];

    for (var i = 1; i < dims.length; i++) {
      var next = dims[i];

      if (initialDim !== next) {
        compileError("'".concat(funcName, "' argument dimensions do not match"));
      }
    }
  }

  var mathFunctionsJS = generateGLSLWrapper(mathFunctions);
  generatedJSFuncsSource += mathFunctionsJS;
  var builtInOtherJS = generateGLSLWrapper(glslBuiltInOther);
  generatedJSFuncsSource += builtInOtherJS;
  var builtInOneToOneJS = "";

  var _iterator3 = _createForOfIteratorHelper(glslBuiltInOneToOne),
      _step3;

  try {
    for (_iterator3.s(); !(_step3 = _iterator3.n()).done;) {
      var _funcName2 = _step3.value;
      builtInOneToOneJS += "function ".concat(_funcName2, "(x) {\n    x = tryMakeNum(x);\n\t// debug here\n\treturn new makeVarWithDims(\"").concat(_funcName2, "(\" + x + \")\", x.dims);\n}\n");
    }
  } catch (err) {
    _iterator3.e(err);
  } finally {
    _iterator3.f();
  }

  generatedJSFuncsSource += builtInOneToOneJS; ////////////////////////////////////////////////////////////
  //End Auto Generated Code
  // set step size directly

  function setStepSize(val) {
    if (typeof val !== 'number') {
      compileError("setStepSize accepts only a constant number. Was given: '" + val.type + "'");
    }

    stepSizeConstant = val;
  } // set step size on a scale 0-100


  function setGeometryQuality(val) {
    if (typeof val !== 'number') {
      compileError("setGeometryQuality accepts only a constant number between 0 and 100. Was given: '" + val.type + "'");
    }

    stepSizeConstant = 1 - 0.01 * val * 0.995;
  }

  function setMaxIterations(val) {
    if (typeof val !== 'number' || val < 0) {
      compileError("setMaxIterations accepts only a constant number >= 0. Was given: '" + val.type + "'");
    }

    maxIterations = Math.round(val);
  }

  function getCurrentState() {
    return stateStack[stateStack.length - 1];
  }

  function getCurrentMode() {
    return getCurrentState().mode;
  }

  function getCurrentDist() {
    return getCurrentState().id + "d";
  }

  function getCurrentPos() {
    return getCurrentState().id + "p";
  }

  function getMainMaterial() {
    return getCurrentState().id + "material";
  }

  function getCurrentMaterial() {
    return getCurrentState().id + "currentMaterial";
  }

  function appendSources(source) {
    geoSrc += "    " + source;
    colorSrc += "    " + source;
  }

  function appendColorSource(source) {
    colorSrc += "    " + source;
  } // General Variable class


  function makeVar(source, type, dims, inline) {
    this.type = type;
    this.dims = dims;

    if (inline) {
      this.name = source;
    } else {
      var vname = "v_" + varCount;
      appendSources(this.type + " " + vname + " = " + source + ";\n");
      varCount += 1;
      this.name = vname;
    }

    this.toString = function () {
      return this.name;
    };

    return this;
  } // Need to handle cases like - vec3(v.x, 0.1, mult(0.1, time))


  function float(source, inline) {
    //if (typeof source !== 'string') {
    source = collapseToString(source); //}

    return new makeVar(source, 'float', 1, inline);
  }

  function vec2(source, y, inline) {
    if (y === undefined) {
      y = source;
    }

    if (typeof source !== 'string') {
      source = "vec2(" + collapseToString(source) + ", " + collapseToString(y) + ")";
    }

    var self = new makeVar(source, 'vec2', 2, inline);
    var currX = new makeVarWithDims(self.name + ".x", 1, true);
    var currY = new makeVarWithDims(self.name + ".y", 1, true);
    var objs = {
      'x': currX,
      'y': currY
    };
    applyVectorAssignmentOverload(self, objs);
    return self;
  }

  function vec3(source, y, z, inline) {
    if (y === undefined) {
      y = source;
      z = source;
    }

    if (typeof source !== 'string') {
      source = "vec3(" + collapseToString(source) + ", " + collapseToString(y) + ", " + collapseToString(z) + ")";
    }

    var self = new makeVar(source, 'vec3', 3, inline);
    var currX = new makeVarWithDims(self.name + ".x", 1, true);
    var currY = new makeVarWithDims(self.name + ".y", 1, true);
    var currZ = new makeVarWithDims(self.name + ".z", 1, true);
    var objs = {
      'x': currX,
      'y': currY,
      'z': currZ
    };
    applyVectorAssignmentOverload(self, objs);
    return self;
  }

  function vec4(source, y, z, w, inline) {
    if (y === undefined && z === undefined) {
      y = source;
      z = source;
      w = source;
    }

    if (typeof source !== 'string') {
      source = "vec4(" + collapseToString(source) + ", " + collapseToString(y) + ", " + collapseToString(z) + ", " + collapseToString(w) + ")";
    }

    var self = new makeVar(source, 'vec4', 4, inline);
    var currX = new makeVarWithDims(self.name + ".x", 1, true);
    var currY = new makeVarWithDims(self.name + ".y", 1, true);
    var currZ = new makeVarWithDims(self.name + ".z", 1, true);
    var currW = new makeVarWithDims(self.name + ".w", 1, true);
    var objs = {
      'x': currX,
      'y': currY,
      'z': currZ,
      'w': currW
    };
    applyVectorAssignmentOverload(self, objs);
    return self;
  } // allows the user to re-assign a vector's components


  function applyVectorAssignmentOverload(self, objs) {
    Object.entries(objs).forEach(function (_ref) {
      var _ref2 = _slicedToArray(_ref, 2),
          key = _ref2[0],
          func = _ref2[1];

      Object.defineProperty(self, key, {
        get: function get() {
          return func;
        },
        set: function set(val) {
          return appendSources("".concat(self.name, ".").concat(key, " = ").concat(val, ";\n"));
        }
      });
    });
  }

  function makeVarWithDims(source, dims, inline) {
    if (dims < 1 || dims > 4) compileError("Tried creating variable with dim: " + dims);
    if (dims === 1) return new float(source, inline);
    if (dims === 2) return new vec2(source, null, inline);
    if (dims === 3) return new vec3(source, null, null, inline);
    if (dims === 4) return new vec4(source, null, null, null, inline);
  } // Modes enum


  var modes = {
    UNION: 10,
    DIFFERENCE: 11,
    INTERSECT: 12,
    BLEND: 13,
    MIXGEO: 14
  };
  var additiveModes = [modes.UNION, modes.BLEND, modes.MIXGEO];
  var materialModes = {
    NORMAL: 20,
    // F it let's start at 20 why not
    MIXMAT: 21
  };
  var time = new float("time", true);
  var mouse = new vec3("mouse", null, null, true);
  var normal = new vec3("normal", null, null, true);

  function mouseIntersection() {
    appendColorSource("mouseIntersect = mouseIntersection();\n");
    return new vec3("mouseIntersect", null, null, true);
  }

  function getRayDirection() {
    return new vec3("getRayDirection()", null, null, false);
  }

  function compileError(err) {
    // todo: throw actual error (and color error?)
    console.error(err, " char: " + geoSrc.length);
    throw err;
  }

  function ensureScalar(funcName, val) {
    var tp = _typeof(val);

    if (typeof val !== 'number' && val.type !== 'float') {
      compileError("'" + funcName + "'" + " accepts only a scalar. Was given: '" + val.type + "'");
    }
  }

  function ensureDims(funcName, size, val) {
    // for now this only verifies vector dims not scalars/floats!
    if (val.type === undefined) {
      compileError("'" + funcName + "' expected a vector");
    }

    if (size !== val.dims) {
      compileError("'" + funcName + "' expected a vector dim: " + size + ", was given: " + val.dims);
    }
  }

  function ensureGroupOp(funcName, a, b) {
    if (typeof a !== 'string' && typeof b !== 'string') {
      if (a.dims !== 1 && b.dims !== 1 && a.dims !== b.dims) {
        compileError("'" + funcName + "'" + " dimension mismatch. Was given: '" + a.type + "' and '" + b.type + "'");
      }
    }
  }

  function collapseToString(val) {
    if (typeof val === 'string') {
      return val;
    } else if (typeof val === 'number') {
      return val.toFixed(8);
    } else {
      return val.toString();
    }
  }

  function mixMat(amount) {
    getCurrentState().materialMode = materialModes.MIXMAT;
    ensureScalar("mixMat", amount);
    getCurrentState().matMixAmount = amount;
  }

  function resetMixColor() {
    getCurrentState().materialMode = materialModes.NORMAL;
  } // Modes (prepend these with GEO or something to indicate they are geometry modes?)


  function union() {
    getCurrentState().mode = modes.UNION;
  }

  function difference() {
    getCurrentState().mode = modes.DIFFERENCE;
  }

  function intersect() {
    getCurrentState().mode = modes.INTERSECT;
  }

  function blend(amount) {
    getCurrentState().mode = modes.BLEND;
    ensureScalar("blend", amount);
    getCurrentState().blendAmount = amount;
  }

  function mixGeo(amount) {
    getCurrentState().mode = modes.MIXGEO;
    ensureScalar("mixGeo", amount);
    getCurrentState().mixAmount = amount;
  }

  function getMode() {
    switch (getCurrentMode()) {
      case modes.UNION:
        return ["add"];
        break;

      case modes.DIFFERENCE:
        return ["subtract"];
        break;

      case modes.INTERSECT:
        return ["intersect"];
        break;

      case modes.BLEND:
        return ["smoothAdd", getCurrentState().blendAmount];
        break;

      case modes.MIXGEO:
        return ["mix", getCurrentState().mixAmount];
        break;

      default:
        return ["add"];
    }
  }

  function applyMode(prim, finalCol) {
    var primName = "prim_" + primCount;
    primCount += 1;
    appendSources("float " + primName + " = " + prim + ";\n");

    if (additiveModes.includes(getCurrentMode())) {
      var selectedCC = finalCol !== undefined ? finalCol : getCurrentMaterial();

      if (getCurrentState().materialMode === materialModes.NORMAL) {
        appendColorSource("if (" + primName + " < " + getCurrentDist() + ") { " + getMainMaterial() + " = " + selectedCC + "; }\n");
      } else if (getCurrentState().materialMode === materialModes.MIXMAT) {
        appendColorSource(getMainMaterial() + " = blendMaterial(" + selectedCC + ", " + getMainMaterial() + ", " + collapseToString(getCurrentState().matMixAmount) + ");\n");
      }
    }

    var cmode = getMode();
    appendSources(getCurrentDist() + " = " + cmode[0] + "( " + primName + ", " + getCurrentDist() + " " + (cmode.length > 1 ? "," + collapseToString(cmode[1]) : "") + " );\n");
  }

  function getSpace() {
    return makeVarWithDims(getCurrentState().p.name, 3);
  }

  function pushState() {
    stateStack.push({
      id: "scope_" + stateCount + "_",
      mode: modes.UNION,
      materialMode: materialModes.NORMAL,
      matMixAmount: 0.0,
      blendAmount: 0.0,
      mixAmount: 0.0
    });
    appendSources("float " + getCurrentDist() + " = 100.0;\n");
    var lastP = stateStack.length > 1 ? stateStack[stateStack.length - 2].id + "p" : "p";
    var lastMat = stateStack.length > 1 ? stateStack[stateStack.length - 2].id + "currentMaterial" : "material";
    appendSources("vec3 " + getCurrentPos() + " = " + lastP + ";\n");
    appendColorSource("Material " + getMainMaterial() + " = " + lastMat + ";\n");
    appendColorSource("Material " + getCurrentMaterial() + " = " + lastMat + ";\n");
    getCurrentState().p = vec3(getCurrentPos(), null, null, true);
    stateCount++;
  }

  function popState() {
    var lastDist = getCurrentDist();
    var lastMaty = getMainMaterial();
    stateStack.pop();
    applyMode(lastDist, lastMaty);
  } // !!! puts initial state on stack, this never comes off !!!


  pushState();

  function shape(func) {
    var makeShape = function makeShape() {
      pushState();
      var output = func.apply(this, arguments);
      popState();
      return output;
    };

    return makeShape;
  }

  function tryMakeNum(v) {
    if (typeof v === 'number') {
      return new float(v);
    } else {
      return v;
    }
  } /// Math ///
  // Group ops


  function mult(a, b) {
    if (typeof a === 'number' && typeof b === 'number') return a * b;
    a = tryMakeNum(a);
    b = tryMakeNum(b);

    if (debug) {
      console.log("multiplying...");
      console.log("a: ", a);
      console.log("b: ", b);
    }

    ensureGroupOp("mult", a, b);
    var dims = Math.max(a.dims, b.dims);
    return new makeVarWithDims("(" + collapseToString(a) + "*" + collapseToString(b) + ")", dims);
  }

  function add(a, b) {
    if (typeof a === 'number' && typeof b === 'number') return a + b;
    a = tryMakeNum(a);
    b = tryMakeNum(b);

    if (debug) {
      console.log("adding...");
      console.log("a: ", a);
      console.log("b: ", b);
    }

    ensureGroupOp("add", a, b);
    var dims = Math.max(a.dims, b.dims);
    return new makeVarWithDims("(" + collapseToString(a) + "+" + collapseToString(b) + ")", dims);
  }

  function sub(a, b) {
    if (typeof a === 'number' && typeof b === 'number') return a - b;
    a = tryMakeNum(a);
    b = tryMakeNum(b);

    if (debug) {
      console.log("subtracting...");
      console.log("a: ", a);
      console.log("b: ", b);
    }

    ensureGroupOp("sub", a, b);
    var dims = Math.max(a.dims, b.dims);
    return new makeVarWithDims("(" + collapseToString(a) + "-" + collapseToString(b) + ")", dims);
  }

  function divide(a, b) {
    if (typeof a === 'number' && typeof b === 'number') return a / b;
    a = tryMakeNum(a);
    b = tryMakeNum(b);

    if (debug) {
      console.log("dividing...");
      console.log("a: ", a);
      console.log("b: ", b);
    }

    ensureGroupOp("divide", a, b);
    var dims = Math.max(a.dims, b.dims);
    return new makeVarWithDims("(" + collapseToString(a) + "/" + collapseToString(b) + ")", dims);
  }

  function setSDF(dist) {
    ensureScalar("setSDF", dist);
    applyMode(collapseToString(dist));
  }

  function getSDF() {
    return float(getCurrentDist(), true);
  }

  function extractSDF(prim) {
    return function () {
      var curD = float(getCurrentDist(), false);
      prim.apply(void 0, arguments);
      var extractedSDF = float(getCurrentDist(), false);
      appendSources("".concat(getCurrentDist(), " = ").concat(collapseToString(curD), ";\n"));
      return extractedSDF;
    };
  } // Displacements


  function reset() {
    if (stateStack.length > 1) {
      appendSources(getCurrentPos() + " = " + stateStack[stateStack.length - 2].id + "p;\n");
    } else {
      appendSources(getCurrentPos() + " = op;\n");
    }
  }

  function displace(xc, yc, zc) {
    if (yc === undefined || zc === undefined) {
      appendSources(getCurrentPos() + " -= " + collapseToString(xc) + ";\n");
    } else {
      ensureScalar("displace", xc);
      ensureScalar("displace", yc);
      ensureScalar("displace", zc);
      appendSources(getCurrentPos() + " -= vec3( " + collapseToString(xc) + ", " + collapseToString(yc) + ", " + collapseToString(zc) + ");\n");
    }
  }

  function setSpace(xc, yc, zc) {
    if (yc === undefined || zc === undefined) {
      appendSources(getCurrentPos() + " = " + collapseToString(xc) + ";\n");
    } else {
      ensureScalar("setSpace", xc);
      ensureScalar("setSpace", yc);
      ensureScalar("setSpace", zc);
      appendSources(getCurrentPos() + " = vec3( " + collapseToString(xc) + ", " + collapseToString(yc) + ", " + collapseToString(zc) + ");\n");
    }
  }

  function repeat(spacing, repetitions) {
    var spc = collapseToString(spacing);
    var reps = collapseToString(repetitions);
    appendSources(getCurrentPos() + " = " + getCurrentPos() + "-" + spc + "*clamp(round(" + getCurrentPos() + "/" + spc + "),-" + reps + " ," + reps + ");\n");
  }

  function rotateX(angle) {
    ensureScalar("rotateX", angle);
    appendSources(getCurrentPos() + ".yz = " + getCurrentPos() + ".yz*rot2(" + collapseToString(angle) + ");\n");
  }

  function rotateY(angle) {
    ensureScalar("rotateY", angle);
    appendSources(getCurrentPos() + ".xz = " + getCurrentPos() + ".xz*rot2(" + collapseToString(angle) + ");\n");
  }

  function rotateZ(angle) {
    ensureScalar("rotateZ", angle);
    appendSources(getCurrentPos() + ".xy = " + getCurrentPos() + ".xy*rot2(" + collapseToString(angle) + ");\n");
  }

  function mirrorX() {
    appendSources(getCurrentPos() + ".x = abs(" + getCurrentPos() + ".x);\n");
  }

  function mirrorY() {
    appendSources(getCurrentPos() + ".y = abs(" + getCurrentPos() + ".y);\n");
  }

  function mirrorZ() {
    appendSources(getCurrentPos() + ".z = abs(" + getCurrentPos() + ".z);\n");
  }

  function mirrorXYZ() {
    appendSources(getCurrentPos() + " = abs(" + getCurrentPos() + ");\n");
  }

  function flipX() {
    appendSources(getCurrentPos() + ".x = -" + getCurrentPos() + ".x;\n");
  }

  function flipY() {
    appendSources(getCurrentPos() + ".y = -" + getCurrentPos() + ".y;\n");
  }

  function flipZ() {
    appendSources(getCurrentPos() + ".z = -" + getCurrentPos() + ".z;\n");
  }

  function expand(amount) {
    ensureScalar("expand", amount);
    appendSources(getCurrentDist() + " -= " + collapseToString(amount) + ";\n");
  }

  function shell(depth) {
    ensureScalar("shell", depth);
    appendSources(getCurrentDist() + " = shell( " + getCurrentDist() + "," + collapseToString(depth) + ");\n");
  } // Color/Lighting


  function color(col, green, blue) {
    if (green !== undefined) {
      ensureScalar("color", col);
      ensureScalar("color", green);
      ensureScalar("color", blue);
      appendColorSource(getCurrentMaterial() + ".albedo = vec3(" + collapseToString(col) + ", " + collapseToString(green) + ", " + collapseToString(blue) + ");\n");
    } else {
      if (col.type !== 'vec3') compileError("albedo must be vec3");
      appendColorSource(getCurrentMaterial() + ".albedo = " + collapseToString(col) + ";\n");
    }
  }

  function metal(val) {
    ensureScalar("metal", val);
    appendColorSource(getCurrentMaterial() + ".metallic = " + collapseToString(val) + ";\n");
  }

  function shine(val) {
    ensureScalar("shine", val);
    appendColorSource(getCurrentMaterial() + ".roughness = 1.0-" + collapseToString(val) + ";\n");
  }

  function fresnel(val) {
    ensureScalar("fresnel", val);
    return pow(1 + dot(getRayDirection(), normal), val);
  }

  function lightDirection(x, y, z) {
    if (y === undefined || z === undefined) {
      appendColorSource("lightDirection = " + collapseToString(x) + ";\n");
    } else {
      ensureScalar("lightDirection", x);
      ensureScalar("lightDirection", y);
      ensureScalar("lightDirection", z);
      appendColorSource("lightDirection = vec3( " + collapseToString(x) + ", " + collapseToString(y) + ", " + collapseToString(z) + ");\n");
    }
  }

  function backgroundColor(x, y, z) {
    if (y === undefined || z === undefined) {
      appendColorSource("backgroundColor = " + collapseToString(x) + ";\n");
    } else {
      ensureScalar("backgroundColor", x);
      ensureScalar("backgroundColor", y);
      ensureScalar("backgroundColor", z);
      appendColorSource("backgroundColor = vec3( " + collapseToString(x) + ", " + collapseToString(y) + ", " + collapseToString(z) + ");\n");
    }
  } // should this also be 'op'? 


  function noLighting() {
    useLighting = false;
  } // replaced with a noop for now to prevent errors


  function basicLighting() {}

  function occlusion(amount) {
    var amt = "1.0";

    if (amount !== undefined) {
      ensureScalar("occlusion", amount);
      amt = collapseToString(amount);
    }

    appendColorSource(getCurrentMaterial() + ".ao = mix(1.0, occlusion(op,normal), " + amt + ");\n");
  }

  function test() {
    appendSources("//this is a test\n");
  }

  function input(name) {
    var value = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0.0;
    var min = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 0.0;
    var max = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : 1.0;

    if (typeof value !== 'number' || typeof min !== 'number' || typeof max !== 'number') {
      compileError('input value, min, and max must be constant numbers');
    }

    uniforms.push({
      name: name,
      type: 'float',
      value: value,
      min: min,
      max: max
    });
    return new float(name, true);
  }

  function input2D(name) {
    var value = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {
      x: 0.0,
      y: 0.0
    };
    var min = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {
      x: 0.0,
      y: 0.0
    };
    var max = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : {
      x: 1.0,
      y: 1.0
    };

    if (typeof value === 'number' && typeof min === 'number' && _typeof(max) === 'object') {
      // syntax input2D(.2, 1.2);
      var x = value;
      var y = min;
      uniforms.push({
        name: name,
        type: 'vec2',
        value: {
          x: x,
          y: y
        },
        min: {
          x: 0,
          y: 0
        },
        max: {
          x: 1,
          y: 1
        }
      });
      return new vec2(name, true);
    }

    if (_typeof(value) !== 'object' || _typeof(min) !== 'object' || _typeof(max) !== 'object') {
      compileError('input2D: value, min, and max must be a vec2');
    }

    var xyExist = [value, min, max].reduce(function (acc, curr) {
      return acc && 'x' in curr && 'y' in curr;
    });

    if (!xyExist) {
      compileError('input2D: value, min, and max must be a vec2');
    }

    uniforms.push({
      name: name,
      type: 'vec2',
      value: value,
      min: min,
      max: max
    });
    return new vec2(name, true);
  }

  function getPixelCoord() {
    return makeVarWithDims('gl_FragCoord.xy', 2, true);
  }

  function getResolution() {
    return makeVarWithDims('resolution', 2, true);
  }

  function get2DCoords() {
    return makeVarWithDims('vec2((gl_FragCoord.x/resolution.x-0.5)*(resolution.x/resolution.y),gl_FragCoord.y/resolution.y-0.5)', 2, false);
  }

  function enable2D() {
    setMaxIterations(0);
    noLighting();
    enable2DFlag = true;
    return get2DCoords();
  }
  /*
  function input2(name, x, y) {
  	console.log('input2',name, x, y);
  	let uniform = {name, type: 'vec2'};
  	let out = x;
  	if(y === undefined) {
  		uniform.value = x;
  	} else {
  		out = new vec2(x, y, true);
  		uniform.value = out;
  	}
  	uniforms.push(uniform);
  	return out;
  }
  */


  var error = undefined;

  function revolve2D(sdf) {
    return function (r) {
      ensureScalar('revolve2D', r);
      var s = getSpace();
      var q = vec2(length(vec3(s.x, s.z, 0)) - r, s.y);

      for (var _len3 = arguments.length, args = new Array(_len3 > 1 ? _len3 - 1 : 0), _key3 = 1; _key3 < _len3; _key3++) {
        args[_key3 - 1] = arguments[_key3];
      }

      setSDF(sdf.apply(void 0, [q].concat(args)));
    };
  } //https://iquilezles.org/www/articles/distfunctions/distfunctions.htm


  function extrude2D(sdf) {
    return function (h) {
      ensureScalar('extrude2D', h);
      var s = getSpace();

      for (var _len4 = arguments.length, args = new Array(_len4 > 1 ? _len4 - 1 : 0), _key4 = 1; _key4 < _len4; _key4++) {
        args[_key4 - 1] = arguments[_key4];
      }

      var d = sdf.apply(void 0, [vec2(s.x, s.y)].concat(args));
      var w = vec2(d, abs(s.z) - h);
      var t = vec3(max(w.x, 0.0), max(w.y, 0.0), 0);
      setSDF(min(max(w.x, w.y), 0.0) + length(t));
    };
  }

  function getSpherical() {
    return toSpherical(getSpace());
  }

  function mirrorN(iterations, scale) {
    ensureScalar('mirrorN', scale);

    for (var i = iterations - 1; i >= 0; i--) {
      mirrorXYZ();
      displace(scale * pow(2, i));
    }
  }

  function grid() {
    var num = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 2;
    var scale = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : .2;
    var roundness = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : .05;
    // ensureScalar('num', num);
    ensureScalar('num', scale);
    ensureScalar('num', roundness); // num = collapseToString(num);
    // scale = collapseToString(scale);
    // roundness = collapseToString(roundness);

    shape(function () {
      mirrorN(num, scale);
      boxFrame(vec3(scale), 0);
      expand(roundness * scale);
    })();
  }

  function repeatLinear(scale, spacing, counts) {
    ensureDims("repeatSpace", 3, scale);
    ensureDims("repeatSpace", 3, spacing);
    ensureDims("repeatSpace", 3, counts);
    spacing *= 2 * scale;
    counts -= 1;
    var s = getSpace();
    var rounded = floor(s / spacing + 0.5);
    var clamped = vec3(clamp(rounded.x, -1 * counts.x, counts.x), clamp(rounded.y, -1 * counts.y, counts.y), clamp(rounded.z, -1 * counts.z, counts.z));
    displace(spacing * clamped); // return instance x, y, z index 
    // and instances local coordinates

    var coordScaled = s / spacing;
    var index = floor(coordScaled + 0.5);
    return {
      "index": index,
      "local": coordScaled - index
    };
  } // based on https://mercury.sexy/hg_sdf/


  function repeatRadial(repeats) {
    var s = getSpace();
    var p = vec3(s.x, 0, s.z);
    var angle = 2 * PI / repeats;
    var a = atan(p.z, p.x) + angle / 2;
    var r = length(p);
    var c = floor(a / angle);
    var ma = mod(a, angle) - angle / 2;
    var px = cos(ma) * r;
    var pz = sin(ma) * r;
    setSpace(vec3(px, s.y, pz));
    var absC = abs(c); // account for odd number of repeats

    var diff = step(absC, repeats / 2);
    c = diff * absC + (1 - diff) * c; // return radial index

    return c;
  }

  function scaleShape(primitive, factor) {
    return function () {
      setSpace(getSpace() / factor);
      primitive.apply(void 0, arguments);
      setSDF(getSDF() * factor);
    };
  } // Define any code that needs to reference auto generated from bindings.js code here


  var postGeneratedFunctions = replaceMathOps([getSpherical, fresnel, revolve2D, extrude2D, mirrorN, grid, repeatLinear, repeatRadial, scaleShape].map(function (el) {
    return el.toString();
  }).join('\n'));
  eval(generatedJSFuncsSource + postGeneratedFunctions + userProvidedSrc);

  if (enable2DFlag) {
    setSDF(0);
  }

  var geoFinal = userGLSL + '\n' + buildGeoSource(geoSrc);
  var colorFinal = buildColorSource(colorSrc, useLighting);
  return {
    uniforms: uniforms,
    stepSizeConstant: stepSizeConstant,
    maxIterations: maxIterations,
    userGLSL: userGLSL,
    geoGLSL: geoFinal,
    colorGLSL: colorFinal,
    error: error
  };
}

var defaultFragSourceGLSL = "float surfaceDistance(vec3 p) {\n    float d = sphere(p, 0.3);\n\treturn d;\n}\n\nvec3 shade(vec3 p, vec3 normal) {\n    vec3 lightDirection = vec3(0.0, 1.0, 0.0);\n    float light = simpleLighting(p, normal, lightDirection);\n    vec3 color = vec3(1.0, 1.0, 1.0);\n\treturn color*light;\n}\n";
var threeJSVertexSource = "\nvarying vec4 worldPos;\n//varying vec2 vUv;\nvarying vec3 sculptureCenter;\nvoid main()\n{\n    vec4 mvPosition = modelViewMatrix * vec4( position, 1.0 );\n    worldPos = modelMatrix*vec4(position,1.0);\n    sculptureCenter = (modelMatrix * vec4(0., 0., 0., 1.)).xyz;\n    //vUv = uv;\n    gl_Position = projectionMatrix * mvPosition;\n}\n";
var minimalVertexSource = "#version 300 es\nin vec3 coordinates;\nout vec3 sculptureCenter;\nvoid main(void) {\n     sculptureCenter = vec3(0.0);\n     gl_Position = vec4(coordinates, 1.0);\n}";
var threeHeader = "\nuniform mat4 projectionMatrix;\nuniform sampler2D msdf;\n\n//varying vec2 vUv;\nvarying vec4 worldPos;\nvarying vec3 sculptureCenter;\n";
var minimalHeader = "#version 300 es\nprecision highp float;\nuniform mat4 projectionMatrix;\nin vec3 sculptureCenter;\nout vec4 pc_fragColor;\n#define cameraPosition vec3(0.0,0.0,-2.0)\n#define vUv vec2(0.0)\n#define worldPos vec4(vec2((gl_FragCoord.x/resolution.x-0.5)*(resolution.x/resolution.y),gl_FragCoord.y/resolution.y-0.5)*1.75,0.0,0.0)\n";
var usePBRHeader = '#define USE_PBR\n';
var useHemisphereLight = '#define HEMISPHERE_LIGHT\n';
var sculptureStarterCode = "\nfloat surfaceDistance(vec3 p);\n\nconst float PI = 3.14159265;\nconst float TAU = PI*2.0;\nconst float TWO_PI = TAU;\n\nconst float max_dist = 100.0;\nconst float intersection_threshold = 0.00001;\n\nstruct Material {\n    vec3 albedo;\n    float metallic;\n    float roughness;\n    float ao;\n};\n\nMaterial blendMaterial(Material a, Material b, float amount) {\n    return Material(\n        mix(a.albedo, b.albedo, amount), \n        mix(a.metallic, b.metallic, amount), \n        mix(a.roughness, b.roughness, amount), \n        mix(a.ao, b.ao, amount)\n    );\n}\n\n// Trig functions normalized to the range 0.0-1.0\nfloat nsin(float x) {\n    return sin(x)*0.5+0.5;\n}\n\nfloat ncos(float x) {\n    return cos(x)*0.5+0.5;\n}\n\nfloat softSquare(float x, int pw) {\n    return 1.0/(pow(tan(x),float(pw+1)*2.0)+1.0);\n}\n\n// Simple oscillators \n\nfloat osc(float freq, float amp, float base, float phase) {\n    return base+amp*sin(TWO_PI*(freq*time+phase));\n}\n\nfloat osc(float freq, float amp, float base) {\n    return osc(freq, amp, base, 0.0);\n}\n\nfloat osc(float freq, float amp) {\n    return osc(freq, amp, 1.0);\n}\n\nfloat osc(float freq) {\n    return osc(freq, 0.5);\n}\n\nfloat osc() {\n    return osc(1.0);\n}\n\n// Color Conversion\n// https://www.shadertoy.com/view/lsS3Wc\nvec3 hsv2rgb( vec3 c )\n{\n    vec3 rgb = clamp( abs(mod(c.x*6.0+vec3(0.0,4.0,2.0),6.0)-3.0)-1.0, 0.0, 1.0 );\n    return c.z * mix( vec3(1.0), rgb, c.y);\n}\n\nvec3 rgb2hsv( vec3 c)\n{\n    const float eps = 0.0000001;\n    vec4 k = vec4(0.0, -1.0/3.0, 2.0/3.0, -1.0);\n    vec4 p = mix(vec4(c.zy, k.wz), vec4(c.yz, k.xy), (c.z<c.y) ? 1.0 : 0.0);\n    vec4 q = mix(vec4(p.xyw, c.x), vec4(c.x, p.yzx), (p.x<c.x) ? 1.0 : 0.0);\n    float d = q.x - min(q.w, q.y);\n    return vec3(abs(q.z + (q.w - q.y) / (6.0*d+eps)), d / (q.x+eps), q.x);\n}\n\n\n// Primitives\n\nfloat line(vec3 p, vec3 a, vec3 b) {\n\tvec3 pa = p-a;\n  \tvec3 ba = b-a;\n\tfloat t = clamp(dot(pa, ba) / dot(ba, ba), 0.0, 1.0);\n  \treturn length(pa - ba*t);\n}\n\n//line with radius\nfloat line( vec3 p, vec3 a, vec3 b, float radius ){\n    vec3 pa = p - a, ba = b - a;\n    float h = clamp( dot(pa,ba)/dot(ba,ba), 0.0, 1.0 );\n    return length( pa - ba*h ) - radius;\n}\n\nfloat sphere( vec3 p, float size ){\n  return length(p)-size;\n}\n\nfloat uBox( vec3 p, vec3 b ){\n  return length(max(abs(p)-b,0.0));\n}\n\nfloat uRoundBox( vec3 p, vec3 b, float r ){\n  return length(max(abs(p)-b,0.0))-r;\n}\n\nfloat box( vec3 p, vec3 box ){\n  vec3 d = abs(p) - box;\n  return min(max(d.x,max(d.y,d.z)),0.0) + length(max(d,0.0));\n}\n\nfloat box( vec3 p, float bx, float by, float bz) {\n    vec3 box = vec3(bx,by,bz);\n    vec3 d = abs(p) - box;\n    return min(max(d.x,max(d.y,d.z)),0.0) + length(max(d,0.0));\n}\n\nfloat roundedBox( vec3 p, vec3 box , float r){\n  return length(max(abs(p)-box,0.0))-r;\n}\n\nfloat torus( vec3 p, vec2 t ){\n  vec2 q = vec2(length(p.xz)-t.x,p.y);\n  return length(q)-t.y;\n}\n\nfloat torus( vec3 p, float tx, float ty ){\n    vec2 q = vec2(length(p.xz)-tx,p.y);\n    return length(q)-ty;\n}\n\nfloat infCylinder( vec3 p, vec3 c )\n{\n  return length(p.xz-c.xy)-c.z;\n}\n\nfloat cylinder( vec3 p, vec2 h )\n{\n  vec2 d = abs(vec2(length(p.xz),p.y)) - h;\n  return min(max(d.x,d.y),0.0) + length(max(d,0.0));\n}\n\nfloat cylinder( vec3 p, float hx, float hy)\n{\n    return cylinder(p, vec2(hx,hy));\n}\n\nfloat cone( vec3 p, vec2 c )\n{\n    // c must be normalized\n    float q = length(p.xy);\n    return dot(c,vec2(q,p.z));\n}\n\nfloat plane( vec3 p, vec4 n )\n{\n  // n must be normalized\n  return dot(p,n.xyz) + n.w;\n}\n\nfloat plane( vec3 p, float nx, float ny, float nz, float nw)\n{\n  // n must be normalized\n  return dot(p,normalize(vec3(nx,ny,nz))) + nw;\n}\n\nfloat hexPrism( vec3 p, vec2 h )\n{\n    vec3 q = abs(p);\n    return max(q.z-h.y,max((q.x*0.866025+q.y*0.5),q.y)-h.x);\n}\n\nfloat triPrism( vec3 p, vec2 h )\n{\n    vec3 q = abs(p);\n    return max(q.z-h.y,max(q.x*0.866025+p.y*0.5,-p.y)-h.x*0.5);\n}\n\nfloat capsule( vec3 p, vec3 a, vec3 b, float r )\n{\n    vec3 pa = p - a, ba = b - a;\n    float h = clamp( dot(pa,ba)/dot(ba,ba), 0.0, 1.0 );\n    return length( pa - ba*h ) - r;\n}\n\nfloat triangularPrism( vec3 p, vec2 h ) {\n    vec3 q = abs(p);\n    return max(q.z-h.y,max(q.x*0.866025+p.y*0.5,-p.y)-h.x*0.5);\n}\n\nfloat cappedCone( vec3 p, vec3 c )\n{\n    vec2 q = vec2( length(p.xz), p.y );\n    vec2 v = vec2( c.z*c.y/c.x, -c.z );\n    vec2 w = v - q;\n    vec2 vv = vec2( dot(v,v), v.x*v.x );\n    vec2 qv = vec2( dot(v,w), v.x*w.x );\n    vec2 d = max(qv,0.0)*qv/vv;\n    return sqrt( dot(w,w) - max(d.x,d.y) ) * sign(max(q.y*v.x-q.x*v.y,w.y));\n}\n\nfloat roundCone(vec3 p, vec3 a, vec3 b, float r1, float r2)\n{\n    // sampling independent computations (only depend on shape)\n    vec3  ba = b - a;\n    float l2 = dot(ba,ba);\n    float rr = r1 - r2;\n    float a2 = l2 - rr*rr;\n    float il2 = 1.0/l2;\n    \n    // sampling dependant computations\n    vec3 pa = p - a;\n    float y = dot(pa,ba);\n    float z = y - l2;\n    vec3 rv = pa*l2 - ba*y;\n    float x2 = dot(rv,rv);\n    float y2 = y*y*l2;\n    float z2 = z*z*l2;\n\n    // single square root!\n    float k = sign(rr)*rr*rr*x2;\n    if( sign(z)*a2*z2 > k ) return  sqrt(x2 + z2)        *il2 - r2;\n    if( sign(y)*a2*y2 < k ) return  sqrt(x2 + y2)        *il2 - r1;\n                            return (sqrt(x2*a2*il2)+y*rr)*il2 - r1;\n}\n\nfloat ellipsoid( vec3 p, vec3 r )\n{\n    return (length( p/r ) - 1.0) * min(min(r.x,r.y),r.z);\n}\n\nvec3 toSpherical(vec3 p) {\n    float phi = atan(p.x,p.z);\n    float r = length(p);\n    float theta = acos(-p.y/r);\n    return vec3(r,theta,phi);\n}\n\nvec3 fromSpherical(vec3 p) {\n    return vec3(p.x*sin(p.y)*cos(p.z), p.x*sin(p.y)*sin(p.z), p.x*cos(p.y));\n}\n\nfloat dot2( vec3 v ) { return dot(v,v); }\n\nfloat uTriangle( vec3 p, vec3 a, vec3 b, vec3 c )\n{\n    vec3 ba = b - a; vec3 pa = p - a;\n    vec3 cb = c - b; vec3 pb = p - b;\n    vec3 ac = a - c; vec3 pc = p - c;\n    vec3 nor = cross( ba, ac );\n    return sqrt(\n    (sign(dot(cross(ba,nor),pa)) +\n     sign(dot(cross(cb,nor),pb)) +\n     sign(dot(cross(ac,nor),pc))<2.0)\n     ?\n     min( min(\n     dot2(ba*clamp(dot(ba,pa)/dot2(ba),0.0,1.0)-pa),\n     dot2(cb*clamp(dot(cb,pb)/dot2(cb),0.0,1.0)-pb) ),\n     dot2(ac*clamp(dot(ac,pc)/dot2(ac),0.0,1.0)-pc) )\n     :\n     dot(nor,pa)*dot(nor,pa)/dot2(nor) );\n}\n\nfloat add( float d1, float d2 )\n{\n    return min(d1,d2);\n}\n\nfloat add(float d1, float d2, float d3) {\n   return min(d1, min(d2,d3));\n}\n\nfloat add(float d1, float d2, float d3, float d4) {\n    return min(min(d1,d2),min(d3,d4));\n}\n\nfloat add(float d1, float d2, float d3, float d4, float d5) {\n    return min(min(min(d1,d2), min(d3,d4)),d5);\n}\n\nfloat add(float d1, float d2, float d3, float d4, float d5, float d6) {\n    return min(min(min(d1,d2),min(d3,d4)),min(d5,d6));\n}\n\nfloat add(float d1, float d2, float d3, float d4, float d5, float d6, float d7) {\n    return min(min(min(d1,d2),min(d3,d4)),min(min(d5,d6),d7));\n}\n\nfloat subtract( float d1, float d2 )\n{\n    return max(-d1,d2);\n}\n\nfloat intersect( float d1, float d2 )\n{\n    return max(d1,d2);\n}\n\nfloat shell(float d, float thickness) {\n    return abs(d)-thickness;\n}\n\nvec3 repeat3D(vec3 p, vec3 c )\n{\n    return mod(p,c)-0.5*c;\n}\n\nfloat repeat1D(float p, float size)\n{\n\tfloat halfSize = size * 0.5;\n\tfloat c = floor((p + halfSize) / size);\n  \tp = mod(p + halfSize, size)-halfSize;\n  \treturn c;\n}\n\nmat2 rot2(float a)\n{\n    float c = cos(a); float s = sin(a);\n\treturn mat2(c, s, -s, c);\n}\n\n// from https://www.neilmendoza.com/glsl-rotation-about-an-arbitrary-axis/\nvec3 rotateVec(vec3 inputVec, vec3 axis, float angle)\n{\n    axis = normalize(axis);\n    float s = sin(angle);\n    float c = cos(angle);\n    float oc = 1.0 - c;\n    \n    return mat3(oc * axis.x * axis.x + c,           oc * axis.x * axis.y - axis.z * s,  oc * axis.z * axis.x + axis.y * s,\n                oc * axis.x * axis.y + axis.z * s,  oc * axis.y * axis.y + c,           oc * axis.y * axis.z - axis.x * s, \n                oc * axis.z * axis.x - axis.y * s,  oc * axis.y * axis.z + axis.x * s,  oc * axis.z * axis.z + c ) * inputVec;\n}\n\n// polynomial smooth min (k = 0.1) (from IQ)\nfloat smoothAdd( float a, float b, float k )\n{\n    float h = clamp( 0.5+0.5*(b-a)/k, 0.0, 1.0 );\n    return mix( b, a, h ) - k*h*(1.0-h);\n}\n\nfloat smoothSubtract(float a,float b, float k)\n{\n    return -smoothAdd(-a,-b,k);\n}\n\nvec2 _hash( vec2 p ) // replace this by something better\n{\n\tp = vec2( dot(p,vec2(127.1,311.7)),\n\t\t\t  dot(p,vec2(269.5,183.3)) );\n\treturn -1.0 + 2.0*fract(sin(p)*43758.5453123);\n}\n\nfloat noise( vec2 p )\n{\n    const float K1 = 0.366025404; // (sqrt(3)-1)/2;\n    const float K2 = 0.211324865; // (3-sqrt(3))/6;\n\tvec2 i = floor( p + (p.x+p.y)*K1 );\n\t\n    vec2 a = p - i + (i.x+i.y)*K2;\n    vec2 o = step(a.yx,a.xy);    \n    vec2 b = a - o + K2;\n\tvec2 c = a - 1.0 + 2.0*K2;\n    vec3 h = max( 0.5-vec3(dot(a,a), dot(b,b), dot(c,c) ), 0.0 );\n\tvec3 n = h*h*h*h*vec3( dot(a,_hash(i+0.0)), dot(b,_hash(i+o)), dot(c,_hash(i+1.0)));\n    return dot( n, vec3(70.0) );\n}\n\n// from https://www.shadertoy.com/view/4djSRW\nfloat _hash13(vec3 p3)\n{\n    p3  = fract(p3 * .1031);\n    p3 += dot(p3, p3.zyx + 31.32);\n    return fract((p3.x + p3.y) * p3.z);\n}\n\nvec3 _hash33(vec3 p3)\n{\n    p3 = fract(p3 * vec3(.1031,.11369,.13787));\n    p3 += dot(p3, p3.yxz+19.19);\n    return -1.0 + 2.0 * fract(vec3((p3.x + p3.y)*p3.z, (p3.x+p3.z)*p3.y, (p3.y+p3.z)*p3.x));\n}\n\n// simplex noise from https://www.shadertoy.com/view/4sc3z2\nfloat noise(vec3 p)\n{\n    const float K1 = 0.333333333;\n    const float K2 = 0.166666667;\n    \n    vec3 i = floor(p + (p.x + p.y + p.z) * K1);\n    vec3 d0 = p - (i - (i.x + i.y + i.z) * K2);\n    \n    // thx nikita: https://www.shadertoy.com/view/XsX3zB\n    vec3 e = step(vec3(0.0), d0 - d0.yzx);\n\tvec3 i1 = e * (1.0 - e.zxy);\n\tvec3 i2 = 1.0 - e.zxy * (1.0 - e);\n    \n    vec3 d1 = d0 - (i1 - 1.0 * K2);\n    vec3 d2 = d0 - (i2 - 2.0 * K2);\n    vec3 d3 = d0 - (1.0 - 3.0 * K2);\n    \n    vec4 h = max(0.6 - vec4(dot(d0, d0), dot(d1, d1), dot(d2, d2), dot(d3, d3)), 0.0);\n    vec4 n = h * h * h * h * vec4(dot(d0, _hash33(i)), dot(d1, _hash33(i + i1)), dot(d2, _hash33(i + i2)), dot(d3, _hash33(i + 1.0)));\n    \n    return dot(vec4(31.316), n);\n}\n\nfloat fractalNoise(vec3 p, float falloff, int iterations) {\n    float v = 0.0;\n    float amp = 1.0;\n    float invFalloff = 1.0/falloff;\n    for (int i=0; i<10; i++) {\n        v += noise(p)*amp;\n\tif (i>=iterations) break;\n        amp *= invFalloff;\n        p *= falloff;\n    }\n    return v;\n} \n\nfloat fractalNoise(vec3 p) {\n    return fractalNoise(p, 2.0, 5);\n}\n\n// Adapted from IQ's usage at https://www.shadertoy.com/view/lllXz4\n// Spherical Fibonnacci points, Benjamin Keinert, Matthias Innmann,\n// Michael Sanger and Marc Stamminger\n\nconst float PHI = 1.61803398875;\n\nvec4 sphericalDistribution( vec3 p, float n )\n{\n    p = normalize(p);\n    float m = 1.0 - 1.0/n;\n\n    float phi = min(atan(p.y, p.x), PI), cosTheta = p.z;\n\n    float k = max(2.0, floor( log(n * PI * sqrt(5.0) * (1.0 - cosTheta*cosTheta))/ log(PHI+1.0)));\n    float Fk = pow(PHI, k)/sqrt(5.0);\n    vec2 F = vec2( round(Fk), round(Fk * PHI) ); // k, k+1\n\n    vec2 ka = 2.0*F/n;\n    vec2 kb = 2.0*PI*( fract((F+1.0)*PHI) - (PHI-1.0) );\n\n    mat2 iB = mat2( ka.y, -ka.x,\n    kb.y, -kb.x ) / (ka.y*kb.x - ka.x*kb.y);\n\n    vec2 c = floor( iB * vec2(phi, cosTheta - m));\n    float d = 8.0;\n    float j = 0.0;\n    vec3 bestQ = vec3(0.0,0.0,8.0);\n    for( int s=0; s<4; s++ )\n    {\n        vec2 uv = vec2( float(s-2*(s/2)), float(s/2) );\n\n        float i = dot(F, uv + c); // all quantities are ingeters (can take a round() for extra safety)\n\n        float phi = 2.0*PI*fract(i*PHI);\n        float cosTheta = m - 2.0*i/n;\n        float sinTheta = sqrt(1.0 - cosTheta*cosTheta);\n\n        vec3 q = vec3( cos(phi)*sinTheta, sin(phi)*sinTheta, cosTheta );\n        float squaredDistance = dot(q-p, q-p);\n        if (squaredDistance < d)\n        {\n            d = squaredDistance;\n            j = i;\n            bestQ = q;\n        }\n    }\n    return vec4(bestQ,sqrt(d));\n}\n\n// Compute intersection of ray and SDF. You probably won't need to modify this.\nfloat intersect(vec3 ro, vec3 rd, float stepFraction) {\n    float t = 0.0;\n\tfor(int i = 0; i < MAX_ITERATIONS; ++i) {\n\t\tfloat h = surfaceDistance((ro+rd*t));\n\t\tif(h < intersection_threshold || t > max_dist) break;\n\t\tt += h*STEP_SIZE_CONSTANT;\n    }\n\treturn t;\n}\n\nvec3 getRayDirection() {\n\treturn normalize(worldPos.xyz-cameraPosition);\n}\n\nvec3 mouseIntersection() {\n    vec3 rayDirection = getRayDirection();\n    return mouse+rayDirection*intersect(mouse, rayDirection, 0.8);\n}\n\n// Calculate the normal of a SDF\nvec3 calcNormal( vec3 pos )\n{\n    vec2 e = vec2(1.0,-1.0)*0.0005;\n    return normalize( e.xyy*surfaceDistance( pos + e.xyy ) + \n\t\t      e.yyx*surfaceDistance( pos + e.yyx ) + \n\t\t      e.yxy*surfaceDistance( pos + e.yxy ) + \n\t\t      e.xxx*surfaceDistance( pos + e.xxx ) );\n}\n\n// from https://learnopengl.com/PBR/Lighting\nvec3 fresnelSchlick(float cosTheta, vec3 F0)\n{\n    return F0 + (1.0 - F0) * pow(1.0 - cosTheta, 5.0);\n}  \n\nfloat DistributionGGX(vec3 N, vec3 H, float roughness)\n{\n    float a      = roughness*roughness;\n    float a2     = a*a;\n    float NdotH  = max(dot(N, H), 0.0);\n    float NdotH2 = NdotH*NdotH;\n\t\n    float num   = a2;\n    float denom = (NdotH2 * (a2 - 1.0) + 1.0);\n    denom = PI * denom * denom;\n\t\n    return num / denom;\n}\n\nfloat GeometrySchlickGGX(float NdotV, float roughness)\n{\n    float r = (roughness + 1.0);\n    float k = (r*r) / 8.0;\n\n    float num   = NdotV;\n    float denom = NdotV * (1.0 - k) + k;\n\t\n    return num / denom;\n}\n\nfloat GeometrySmith(vec3 N, vec3 V, vec3 L, float roughness)\n{\n    float NdotV = max(dot(N, V), 0.0);\n    float NdotL = max(dot(N, L), 0.0);\n    float ggx2  = GeometrySchlickGGX(NdotV, roughness);\n    float ggx1  = GeometrySchlickGGX(NdotL, roughness);\n\t\n    return ggx1 * ggx2;\n}\n\n// adapted from https://learnopengl.com/PBR/Lighting\nvec3 pbrLighting(vec3 WordPos, vec3 N, vec3 lightdir, Material mat, vec3 backgroundColor) {\n\n    vec3 V = -getRayDirection();\n    vec3 F0 = vec3(0.04); \n    F0 = mix(F0, mat.albedo, mat.metallic);\n\t\n    // reflectance equation\n    vec3 Lo = vec3(0.0);\n\n    // calculate per-light radiance\n    vec3 L = normalize(lightdir);\n    vec3 H = normalize(V + L);        \n    \n    // cook-torrance brdf\n    float NDF = DistributionGGX(N, H, mat.roughness);        \n    float G   = GeometrySmith(N, V, L, mat.roughness);      \n    vec3 F    = fresnelSchlick(max(dot(H, V), 0.0), F0);    \n\n    vec3 kS = F;\n    vec3 kD = vec3(1.0) - kS;\n    kD *= 1.0 - mat.metallic;\t  \n    \n    vec3 numerator    = NDF * G * F;\n    float denominator = 4.0 * max(dot(N, V), 0.0) * max(dot(N, L), 0.0);\n    vec3 specular     = numerator / max(denominator, 0.001);  \n    \n    // add to outgoing radiance Lo\n    float NdotL = max(dot(N, L), 0.0);                \n    Lo += (kD * mat.albedo / PI + specular) * NdotL;  \n  \n    float hemi = 1.0;\n    #ifdef HEMISPHERE_LIGHT\n    // ground is black, taken into account by ambient light\n    hemi = NdotL*1.25;\n    #endif\n\n    vec3 ambient = (vec3(1.2+hemi) * mat.albedo) * mat.ao;\n    vec3 color = ambient + Lo*1.7;\n    \n    /// this section adds edge glow as if there were a white env map ///\n    /// there should probably be a way to disable it //\n    float lt = 1.0-max(dot(N,V),0.0);\n    lt = pow(lt,6.0);\n    color += 16.0*lt*(0.2+mat.albedo)*mat.metallic*backgroundColor*(1.3-mat.roughness);\n    ///\n    \n    color = color / (color + vec3(1.0));\n    color = pow(color, vec3(1.0/2.2));\n   \n    return color;\n}\n\nfloat simpleLighting(vec3 p, vec3 normal, vec3 lightdir) {\n    // Simple phong-like shading\n    float value = clamp(dot(normal, normalize(lightdir)),0.0, 1.0);\n    return value * 0.3 + 0.7;\n}\n\nfloat specularLighting(vec3 p, vec3 normal, vec3 lightDirection, float shine) {\n    float lamb = clamp(dot(normal,normalize(lightDirection)),0.0,1.0);\n    float spec = pow(lamb, exp(10.0*shine));\n    lamb = 0.4*lamb + 0.4 + 0.2*spec;\n    return lamb;\n}\n\nfloat shadow(vec3 p, vec3 lightDirection, float amount) {\n    float t = intersect(p+0.001*lightDirection, lightDirection, stepSize);\n    return t < (max_dist - 0.1) ? 1.0-amount : 1.0;\n}\n\n// From https://www.shadertoy.com/view/XslSWl\nfloat occlusion(vec3 p,vec3 n) { \n    const int AO_SAMPLES = 8;\n    const float INV_AO_SAMPLES = 1.0/float(AO_SAMPLES);\n    const float R = 0.9;\n    const float D = 0.8;\n    float r = 0.0;\n    for(int i = 0; i < AO_SAMPLES; i++) {\n        float f = float(i)*INV_AO_SAMPLES;\n        float h = 0.05+f*R;\n        float d = surfaceDistance(p + n * h) - 0.003;\n        r += clamp(h*D-d,0.0,1.0) * (1.0-f);\n    }    \n    return clamp(1.0-r,0.0,1.0);\n}\n";
var fragFooter = "\n// For advanced users //\nvoid main() {\n\n    vec3 rayOrigin = (cameraPosition - sculptureCenter) / max(intersection_threshold, _scale);\n    vec3 rayDirection = getRayDirection();\n    float t = intersect(rayOrigin, rayDirection, stepSize);\n    if(t < max_dist) {\n        vec3 p = (rayOrigin + rayDirection*t);\n        //vec4 sp = projectionMatrix*viewMatrix*vec4(p,1.0); //could be used to set FragDepth\n        vec3 normal = calcNormal(p);\n        // p *= _scale;\n        vec3 col = shade(p, normal);\n        pc_fragColor = vec4(col, opacity);\n        \n    } else {\n        discard;\n    }\n}\n";

/**
 * @license
 * Copyright 2010-2022 Three.js Authors
 * SPDX-License-Identifier: MIT
 */
const REVISION = '138';
const MOUSE = { LEFT: 0, MIDDLE: 1, RIGHT: 2, ROTATE: 0, DOLLY: 1, PAN: 2 };
const TOUCH = { ROTATE: 0, PAN: 1, DOLLY_PAN: 2, DOLLY_ROTATE: 3 };
const CullFaceNone = 0;
const CullFaceBack = 1;
const CullFaceFront = 2;
const CullFaceFrontBack = 3;
const BasicShadowMap = 0;
const PCFShadowMap = 1;
const PCFSoftShadowMap = 2;
const VSMShadowMap = 3;
const FrontSide = 0;
const BackSide = 1;
const DoubleSide = 2;
const FlatShading = 1;
const SmoothShading = 2;
const NoBlending = 0;
const NormalBlending = 1;
const AdditiveBlending = 2;
const SubtractiveBlending = 3;
const MultiplyBlending = 4;
const CustomBlending = 5;
const AddEquation = 100;
const SubtractEquation = 101;
const ReverseSubtractEquation = 102;
const MinEquation = 103;
const MaxEquation = 104;
const ZeroFactor = 200;
const OneFactor = 201;
const SrcColorFactor = 202;
const OneMinusSrcColorFactor = 203;
const SrcAlphaFactor = 204;
const OneMinusSrcAlphaFactor = 205;
const DstAlphaFactor = 206;
const OneMinusDstAlphaFactor = 207;
const DstColorFactor = 208;
const OneMinusDstColorFactor = 209;
const SrcAlphaSaturateFactor = 210;
const NeverDepth = 0;
const AlwaysDepth = 1;
const LessDepth = 2;
const LessEqualDepth = 3;
const EqualDepth = 4;
const GreaterEqualDepth = 5;
const GreaterDepth = 6;
const NotEqualDepth = 7;
const MultiplyOperation = 0;
const MixOperation = 1;
const AddOperation = 2;
const NoToneMapping = 0;
const LinearToneMapping = 1;
const ReinhardToneMapping = 2;
const CineonToneMapping = 3;
const ACESFilmicToneMapping = 4;
const CustomToneMapping = 5;

const UVMapping = 300;
const CubeReflectionMapping = 301;
const CubeRefractionMapping = 302;
const EquirectangularReflectionMapping = 303;
const EquirectangularRefractionMapping = 304;
const CubeUVReflectionMapping = 306;
const CubeUVRefractionMapping = 307;
const RepeatWrapping = 1000;
const ClampToEdgeWrapping = 1001;
const MirroredRepeatWrapping = 1002;
const NearestFilter = 1003;
const NearestMipmapNearestFilter = 1004;
const NearestMipMapNearestFilter = 1004;
const NearestMipmapLinearFilter = 1005;
const NearestMipMapLinearFilter = 1005;
const LinearFilter = 1006;
const LinearMipmapNearestFilter = 1007;
const LinearMipMapNearestFilter = 1007;
const LinearMipmapLinearFilter = 1008;
const LinearMipMapLinearFilter = 1008;
const UnsignedByteType = 1009;
const ByteType = 1010;
const ShortType = 1011;
const UnsignedShortType = 1012;
const IntType = 1013;
const UnsignedIntType = 1014;
const FloatType = 1015;
const HalfFloatType = 1016;
const UnsignedShort4444Type = 1017;
const UnsignedShort5551Type = 1018;
const UnsignedInt248Type = 1020;
const AlphaFormat = 1021;
const RGBFormat = 1022;
const RGBAFormat = 1023;
const LuminanceFormat = 1024;
const LuminanceAlphaFormat = 1025;
const DepthFormat = 1026;
const DepthStencilFormat = 1027;
const RedFormat = 1028;
const RedIntegerFormat = 1029;
const RGFormat = 1030;
const RGIntegerFormat = 1031;
const RGBAIntegerFormat = 1033;

const RGB_S3TC_DXT1_Format = 33776;
const RGBA_S3TC_DXT1_Format = 33777;
const RGBA_S3TC_DXT3_Format = 33778;
const RGBA_S3TC_DXT5_Format = 33779;
const RGB_PVRTC_4BPPV1_Format = 35840;
const RGB_PVRTC_2BPPV1_Format = 35841;
const RGBA_PVRTC_4BPPV1_Format = 35842;
const RGBA_PVRTC_2BPPV1_Format = 35843;
const RGB_ETC1_Format = 36196;
const RGB_ETC2_Format = 37492;
const RGBA_ETC2_EAC_Format = 37496;
const RGBA_ASTC_4x4_Format = 37808;
const RGBA_ASTC_5x4_Format = 37809;
const RGBA_ASTC_5x5_Format = 37810;
const RGBA_ASTC_6x5_Format = 37811;
const RGBA_ASTC_6x6_Format = 37812;
const RGBA_ASTC_8x5_Format = 37813;
const RGBA_ASTC_8x6_Format = 37814;
const RGBA_ASTC_8x8_Format = 37815;
const RGBA_ASTC_10x5_Format = 37816;
const RGBA_ASTC_10x6_Format = 37817;
const RGBA_ASTC_10x8_Format = 37818;
const RGBA_ASTC_10x10_Format = 37819;
const RGBA_ASTC_12x10_Format = 37820;
const RGBA_ASTC_12x12_Format = 37821;
const RGBA_BPTC_Format = 36492;
const LoopOnce = 2200;
const LoopRepeat = 2201;
const LoopPingPong = 2202;
const InterpolateDiscrete = 2300;
const InterpolateLinear = 2301;
const InterpolateSmooth = 2302;
const ZeroCurvatureEnding = 2400;
const ZeroSlopeEnding = 2401;
const WrapAroundEnding = 2402;
const NormalAnimationBlendMode = 2500;
const AdditiveAnimationBlendMode = 2501;
const TrianglesDrawMode = 0;
const TriangleStripDrawMode = 1;
const TriangleFanDrawMode = 2;
const LinearEncoding = 3000;
const sRGBEncoding = 3001;
const BasicDepthPacking = 3200;
const RGBADepthPacking = 3201;
const TangentSpaceNormalMap = 0;
const ObjectSpaceNormalMap = 1;

const ZeroStencilOp = 0;
const KeepStencilOp = 7680;
const ReplaceStencilOp = 7681;
const IncrementStencilOp = 7682;
const DecrementStencilOp = 7683;
const IncrementWrapStencilOp = 34055;
const DecrementWrapStencilOp = 34056;
const InvertStencilOp = 5386;

const NeverStencilFunc = 512;
const LessStencilFunc = 513;
const EqualStencilFunc = 514;
const LessEqualStencilFunc = 515;
const GreaterStencilFunc = 516;
const NotEqualStencilFunc = 517;
const GreaterEqualStencilFunc = 518;
const AlwaysStencilFunc = 519;

const StaticDrawUsage = 35044;
const DynamicDrawUsage = 35048;
const StreamDrawUsage = 35040;
const StaticReadUsage = 35045;
const DynamicReadUsage = 35049;
const StreamReadUsage = 35041;
const StaticCopyUsage = 35046;
const DynamicCopyUsage = 35050;
const StreamCopyUsage = 35042;

const GLSL1 = '100';
const GLSL3 = '300 es';

const _SRGBAFormat = 1035; // fallback for WebGL 1

/**
 * https://github.com/mrdoob/eventdispatcher.js/
 */

class EventDispatcher {

	addEventListener( type, listener ) {

		if ( this._listeners === undefined ) this._listeners = {};

		const listeners = this._listeners;

		if ( listeners[ type ] === undefined ) {

			listeners[ type ] = [];

		}

		if ( listeners[ type ].indexOf( listener ) === - 1 ) {

			listeners[ type ].push( listener );

		}

	}

	hasEventListener( type, listener ) {

		if ( this._listeners === undefined ) return false;

		const listeners = this._listeners;

		return listeners[ type ] !== undefined && listeners[ type ].indexOf( listener ) !== - 1;

	}

	removeEventListener( type, listener ) {

		if ( this._listeners === undefined ) return;

		const listeners = this._listeners;
		const listenerArray = listeners[ type ];

		if ( listenerArray !== undefined ) {

			const index = listenerArray.indexOf( listener );

			if ( index !== - 1 ) {

				listenerArray.splice( index, 1 );

			}

		}

	}

	dispatchEvent( event ) {

		if ( this._listeners === undefined ) return;

		const listeners = this._listeners;
		const listenerArray = listeners[ event.type ];

		if ( listenerArray !== undefined ) {

			event.target = this;

			// Make a copy, in case listeners are removed while iterating.
			const array = listenerArray.slice( 0 );

			for ( let i = 0, l = array.length; i < l; i ++ ) {

				array[ i ].call( this, event );

			}

			event.target = null;

		}

	}

}

const _lut = [];

for ( let i = 0; i < 256; i ++ ) {

	_lut[ i ] = ( i < 16 ? '0' : '' ) + ( i ).toString( 16 );

}

let _seed = 1234567;


const DEG2RAD = Math.PI / 180;
const RAD2DEG = 180 / Math.PI;

// http://stackoverflow.com/questions/105034/how-to-create-a-guid-uuid-in-javascript/21963136#21963136
function generateUUID() {

	const d0 = Math.random() * 0xffffffff | 0;
	const d1 = Math.random() * 0xffffffff | 0;
	const d2 = Math.random() * 0xffffffff | 0;
	const d3 = Math.random() * 0xffffffff | 0;
	const uuid = _lut[ d0 & 0xff ] + _lut[ d0 >> 8 & 0xff ] + _lut[ d0 >> 16 & 0xff ] + _lut[ d0 >> 24 & 0xff ] + '-' +
			_lut[ d1 & 0xff ] + _lut[ d1 >> 8 & 0xff ] + '-' + _lut[ d1 >> 16 & 0x0f | 0x40 ] + _lut[ d1 >> 24 & 0xff ] + '-' +
			_lut[ d2 & 0x3f | 0x80 ] + _lut[ d2 >> 8 & 0xff ] + '-' + _lut[ d2 >> 16 & 0xff ] + _lut[ d2 >> 24 & 0xff ] +
			_lut[ d3 & 0xff ] + _lut[ d3 >> 8 & 0xff ] + _lut[ d3 >> 16 & 0xff ] + _lut[ d3 >> 24 & 0xff ];

	// .toUpperCase() here flattens concatenated strings to save heap memory space.
	return uuid.toUpperCase();

}

function clamp$1( value, min, max ) {

	return Math.max( min, Math.min( max, value ) );

}

// compute euclidian modulo of m % n
// https://en.wikipedia.org/wiki/Modulo_operation
function euclideanModulo( n, m ) {

	return ( ( n % m ) + m ) % m;

}

// Linear mapping from range <a1, a2> to range <b1, b2>
function mapLinear( x, a1, a2, b1, b2 ) {

	return b1 + ( x - a1 ) * ( b2 - b1 ) / ( a2 - a1 );

}

// https://www.gamedev.net/tutorials/programming/general-and-gameplay-programming/inverse-lerp-a-super-useful-yet-often-overlooked-function-r5230/
function inverseLerp( x, y, value ) {

	if ( x !== y ) {

		return ( value - x ) / ( y - x );

	} else {

		return 0;

	}

}

// https://en.wikipedia.org/wiki/Linear_interpolation
function lerp( x, y, t ) {

	return ( 1 - t ) * x + t * y;

}

// http://www.rorydriscoll.com/2016/03/07/frame-rate-independent-damping-using-lerp/
function damp( x, y, lambda, dt ) {

	return lerp( x, y, 1 - Math.exp( - lambda * dt ) );

}

// https://www.desmos.com/calculator/vcsjnyz7x4
function pingpong( x, length = 1 ) {

	return length - Math.abs( euclideanModulo( x, length * 2 ) - length );

}

// http://en.wikipedia.org/wiki/Smoothstep
function smoothstep( x, min, max ) {

	if ( x <= min ) return 0;
	if ( x >= max ) return 1;

	x = ( x - min ) / ( max - min );

	return x * x * ( 3 - 2 * x );

}

function smootherstep( x, min, max ) {

	if ( x <= min ) return 0;
	if ( x >= max ) return 1;

	x = ( x - min ) / ( max - min );

	return x * x * x * ( x * ( x * 6 - 15 ) + 10 );

}

// Random integer from <low, high> interval
function randInt( low, high ) {

	return low + Math.floor( Math.random() * ( high - low + 1 ) );

}

// Random float from <low, high> interval
function randFloat( low, high ) {

	return low + Math.random() * ( high - low );

}

// Random float from <-range/2, range/2> interval
function randFloatSpread( range ) {

	return range * ( 0.5 - Math.random() );

}

// Deterministic pseudo-random float in the interval [ 0, 1 ]
function seededRandom( s ) {

	if ( s !== undefined ) _seed = s % 2147483647;

	// Park-Miller algorithm

	_seed = _seed * 16807 % 2147483647;

	return ( _seed - 1 ) / 2147483646;

}

function degToRad( degrees ) {

	return degrees * DEG2RAD;

}

function radToDeg( radians ) {

	return radians * RAD2DEG;

}

function isPowerOfTwo( value ) {

	return ( value & ( value - 1 ) ) === 0 && value !== 0;

}

function ceilPowerOfTwo( value ) {

	return Math.pow( 2, Math.ceil( Math.log( value ) / Math.LN2 ) );

}

function floorPowerOfTwo( value ) {

	return Math.pow( 2, Math.floor( Math.log( value ) / Math.LN2 ) );

}

function setQuaternionFromProperEuler( q, a, b, c, order ) {

	// Intrinsic Proper Euler Angles - see https://en.wikipedia.org/wiki/Euler_angles

	// rotations are applied to the axes in the order specified by 'order'
	// rotation by angle 'a' is applied first, then by angle 'b', then by angle 'c'
	// angles are in radians

	const cos = Math.cos;
	const sin = Math.sin;

	const c2 = cos( b / 2 );
	const s2 = sin( b / 2 );

	const c13 = cos( ( a + c ) / 2 );
	const s13 = sin( ( a + c ) / 2 );

	const c1_3 = cos( ( a - c ) / 2 );
	const s1_3 = sin( ( a - c ) / 2 );

	const c3_1 = cos( ( c - a ) / 2 );
	const s3_1 = sin( ( c - a ) / 2 );

	switch ( order ) {

		case 'XYX':
			q.set( c2 * s13, s2 * c1_3, s2 * s1_3, c2 * c13 );
			break;

		case 'YZY':
			q.set( s2 * s1_3, c2 * s13, s2 * c1_3, c2 * c13 );
			break;

		case 'ZXZ':
			q.set( s2 * c1_3, s2 * s1_3, c2 * s13, c2 * c13 );
			break;

		case 'XZX':
			q.set( c2 * s13, s2 * s3_1, s2 * c3_1, c2 * c13 );
			break;

		case 'YXY':
			q.set( s2 * c3_1, c2 * s13, s2 * s3_1, c2 * c13 );
			break;

		case 'ZYZ':
			q.set( s2 * s3_1, s2 * c3_1, c2 * s13, c2 * c13 );
			break;

		default:
			console.warn( 'THREE.MathUtils: .setQuaternionFromProperEuler() encountered an unknown order: ' + order );

	}

}

var MathUtils = /*#__PURE__*/Object.freeze({
	__proto__: null,
	DEG2RAD: DEG2RAD,
	RAD2DEG: RAD2DEG,
	generateUUID: generateUUID,
	clamp: clamp$1,
	euclideanModulo: euclideanModulo,
	mapLinear: mapLinear,
	inverseLerp: inverseLerp,
	lerp: lerp,
	damp: damp,
	pingpong: pingpong,
	smoothstep: smoothstep,
	smootherstep: smootherstep,
	randInt: randInt,
	randFloat: randFloat,
	randFloatSpread: randFloatSpread,
	seededRandom: seededRandom,
	degToRad: degToRad,
	radToDeg: radToDeg,
	isPowerOfTwo: isPowerOfTwo,
	ceilPowerOfTwo: ceilPowerOfTwo,
	floorPowerOfTwo: floorPowerOfTwo,
	setQuaternionFromProperEuler: setQuaternionFromProperEuler
});

class Vector2 {

	constructor( x = 0, y = 0 ) {

		this.x = x;
		this.y = y;

	}

	get width() {

		return this.x;

	}

	set width( value ) {

		this.x = value;

	}

	get height() {

		return this.y;

	}

	set height( value ) {

		this.y = value;

	}

	set( x, y ) {

		this.x = x;
		this.y = y;

		return this;

	}

	setScalar( scalar ) {

		this.x = scalar;
		this.y = scalar;

		return this;

	}

	setX( x ) {

		this.x = x;

		return this;

	}

	setY( y ) {

		this.y = y;

		return this;

	}

	setComponent( index, value ) {

		switch ( index ) {

			case 0: this.x = value; break;
			case 1: this.y = value; break;
			default: throw new Error( 'index is out of range: ' + index );

		}

		return this;

	}

	getComponent( index ) {

		switch ( index ) {

			case 0: return this.x;
			case 1: return this.y;
			default: throw new Error( 'index is out of range: ' + index );

		}

	}

	clone() {

		return new this.constructor( this.x, this.y );

	}

	copy( v ) {

		this.x = v.x;
		this.y = v.y;

		return this;

	}

	add( v, w ) {

		if ( w !== undefined ) {

			console.warn( 'THREE.Vector2: .add() now only accepts one argument. Use .addVectors( a, b ) instead.' );
			return this.addVectors( v, w );

		}

		this.x += v.x;
		this.y += v.y;

		return this;

	}

	addScalar( s ) {

		this.x += s;
		this.y += s;

		return this;

	}

	addVectors( a, b ) {

		this.x = a.x + b.x;
		this.y = a.y + b.y;

		return this;

	}

	addScaledVector( v, s ) {

		this.x += v.x * s;
		this.y += v.y * s;

		return this;

	}

	sub( v, w ) {

		if ( w !== undefined ) {

			console.warn( 'THREE.Vector2: .sub() now only accepts one argument. Use .subVectors( a, b ) instead.' );
			return this.subVectors( v, w );

		}

		this.x -= v.x;
		this.y -= v.y;

		return this;

	}

	subScalar( s ) {

		this.x -= s;
		this.y -= s;

		return this;

	}

	subVectors( a, b ) {

		this.x = a.x - b.x;
		this.y = a.y - b.y;

		return this;

	}

	multiply( v ) {

		this.x *= v.x;
		this.y *= v.y;

		return this;

	}

	multiplyScalar( scalar ) {

		this.x *= scalar;
		this.y *= scalar;

		return this;

	}

	divide( v ) {

		this.x /= v.x;
		this.y /= v.y;

		return this;

	}

	divideScalar( scalar ) {

		return this.multiplyScalar( 1 / scalar );

	}

	applyMatrix3( m ) {

		const x = this.x, y = this.y;
		const e = m.elements;

		this.x = e[ 0 ] * x + e[ 3 ] * y + e[ 6 ];
		this.y = e[ 1 ] * x + e[ 4 ] * y + e[ 7 ];

		return this;

	}

	min( v ) {

		this.x = Math.min( this.x, v.x );
		this.y = Math.min( this.y, v.y );

		return this;

	}

	max( v ) {

		this.x = Math.max( this.x, v.x );
		this.y = Math.max( this.y, v.y );

		return this;

	}

	clamp( min, max ) {

		// assumes min < max, componentwise

		this.x = Math.max( min.x, Math.min( max.x, this.x ) );
		this.y = Math.max( min.y, Math.min( max.y, this.y ) );

		return this;

	}

	clampScalar( minVal, maxVal ) {

		this.x = Math.max( minVal, Math.min( maxVal, this.x ) );
		this.y = Math.max( minVal, Math.min( maxVal, this.y ) );

		return this;

	}

	clampLength( min, max ) {

		const length = this.length();

		return this.divideScalar( length || 1 ).multiplyScalar( Math.max( min, Math.min( max, length ) ) );

	}

	floor() {

		this.x = Math.floor( this.x );
		this.y = Math.floor( this.y );

		return this;

	}

	ceil() {

		this.x = Math.ceil( this.x );
		this.y = Math.ceil( this.y );

		return this;

	}

	round() {

		this.x = Math.round( this.x );
		this.y = Math.round( this.y );

		return this;

	}

	roundToZero() {

		this.x = ( this.x < 0 ) ? Math.ceil( this.x ) : Math.floor( this.x );
		this.y = ( this.y < 0 ) ? Math.ceil( this.y ) : Math.floor( this.y );

		return this;

	}

	negate() {

		this.x = - this.x;
		this.y = - this.y;

		return this;

	}

	dot( v ) {

		return this.x * v.x + this.y * v.y;

	}

	cross( v ) {

		return this.x * v.y - this.y * v.x;

	}

	lengthSq() {

		return this.x * this.x + this.y * this.y;

	}

	length() {

		return Math.sqrt( this.x * this.x + this.y * this.y );

	}

	manhattanLength() {

		return Math.abs( this.x ) + Math.abs( this.y );

	}

	normalize() {

		return this.divideScalar( this.length() || 1 );

	}

	angle() {

		// computes the angle in radians with respect to the positive x-axis

		const angle = Math.atan2( - this.y, - this.x ) + Math.PI;

		return angle;

	}

	distanceTo( v ) {

		return Math.sqrt( this.distanceToSquared( v ) );

	}

	distanceToSquared( v ) {

		const dx = this.x - v.x, dy = this.y - v.y;
		return dx * dx + dy * dy;

	}

	manhattanDistanceTo( v ) {

		return Math.abs( this.x - v.x ) + Math.abs( this.y - v.y );

	}

	setLength( length ) {

		return this.normalize().multiplyScalar( length );

	}

	lerp( v, alpha ) {

		this.x += ( v.x - this.x ) * alpha;
		this.y += ( v.y - this.y ) * alpha;

		return this;

	}

	lerpVectors( v1, v2, alpha ) {

		this.x = v1.x + ( v2.x - v1.x ) * alpha;
		this.y = v1.y + ( v2.y - v1.y ) * alpha;

		return this;

	}

	equals( v ) {

		return ( ( v.x === this.x ) && ( v.y === this.y ) );

	}

	fromArray( array, offset = 0 ) {

		this.x = array[ offset ];
		this.y = array[ offset + 1 ];

		return this;

	}

	toArray( array = [], offset = 0 ) {

		array[ offset ] = this.x;
		array[ offset + 1 ] = this.y;

		return array;

	}

	fromBufferAttribute( attribute, index, offset ) {

		if ( offset !== undefined ) {

			console.warn( 'THREE.Vector2: offset has been removed from .fromBufferAttribute().' );

		}

		this.x = attribute.getX( index );
		this.y = attribute.getY( index );

		return this;

	}

	rotateAround( center, angle ) {

		const c = Math.cos( angle ), s = Math.sin( angle );

		const x = this.x - center.x;
		const y = this.y - center.y;

		this.x = x * c - y * s + center.x;
		this.y = x * s + y * c + center.y;

		return this;

	}

	random() {

		this.x = Math.random();
		this.y = Math.random();

		return this;

	}

	*[ Symbol.iterator ]() {

		yield this.x;
		yield this.y;

	}

}

Vector2.prototype.isVector2 = true;

class Matrix3 {

	constructor() {

		this.elements = [

			1, 0, 0,
			0, 1, 0,
			0, 0, 1

		];

		if ( arguments.length > 0 ) {

			console.error( 'THREE.Matrix3: the constructor no longer reads arguments. use .set() instead.' );

		}

	}

	set( n11, n12, n13, n21, n22, n23, n31, n32, n33 ) {

		const te = this.elements;

		te[ 0 ] = n11; te[ 1 ] = n21; te[ 2 ] = n31;
		te[ 3 ] = n12; te[ 4 ] = n22; te[ 5 ] = n32;
		te[ 6 ] = n13; te[ 7 ] = n23; te[ 8 ] = n33;

		return this;

	}

	identity() {

		this.set(

			1, 0, 0,
			0, 1, 0,
			0, 0, 1

		);

		return this;

	}

	copy( m ) {

		const te = this.elements;
		const me = m.elements;

		te[ 0 ] = me[ 0 ]; te[ 1 ] = me[ 1 ]; te[ 2 ] = me[ 2 ];
		te[ 3 ] = me[ 3 ]; te[ 4 ] = me[ 4 ]; te[ 5 ] = me[ 5 ];
		te[ 6 ] = me[ 6 ]; te[ 7 ] = me[ 7 ]; te[ 8 ] = me[ 8 ];

		return this;

	}

	extractBasis( xAxis, yAxis, zAxis ) {

		xAxis.setFromMatrix3Column( this, 0 );
		yAxis.setFromMatrix3Column( this, 1 );
		zAxis.setFromMatrix3Column( this, 2 );

		return this;

	}

	setFromMatrix4( m ) {

		const me = m.elements;

		this.set(

			me[ 0 ], me[ 4 ], me[ 8 ],
			me[ 1 ], me[ 5 ], me[ 9 ],
			me[ 2 ], me[ 6 ], me[ 10 ]

		);

		return this;

	}

	multiply( m ) {

		return this.multiplyMatrices( this, m );

	}

	premultiply( m ) {

		return this.multiplyMatrices( m, this );

	}

	multiplyMatrices( a, b ) {

		const ae = a.elements;
		const be = b.elements;
		const te = this.elements;

		const a11 = ae[ 0 ], a12 = ae[ 3 ], a13 = ae[ 6 ];
		const a21 = ae[ 1 ], a22 = ae[ 4 ], a23 = ae[ 7 ];
		const a31 = ae[ 2 ], a32 = ae[ 5 ], a33 = ae[ 8 ];

		const b11 = be[ 0 ], b12 = be[ 3 ], b13 = be[ 6 ];
		const b21 = be[ 1 ], b22 = be[ 4 ], b23 = be[ 7 ];
		const b31 = be[ 2 ], b32 = be[ 5 ], b33 = be[ 8 ];

		te[ 0 ] = a11 * b11 + a12 * b21 + a13 * b31;
		te[ 3 ] = a11 * b12 + a12 * b22 + a13 * b32;
		te[ 6 ] = a11 * b13 + a12 * b23 + a13 * b33;

		te[ 1 ] = a21 * b11 + a22 * b21 + a23 * b31;
		te[ 4 ] = a21 * b12 + a22 * b22 + a23 * b32;
		te[ 7 ] = a21 * b13 + a22 * b23 + a23 * b33;

		te[ 2 ] = a31 * b11 + a32 * b21 + a33 * b31;
		te[ 5 ] = a31 * b12 + a32 * b22 + a33 * b32;
		te[ 8 ] = a31 * b13 + a32 * b23 + a33 * b33;

		return this;

	}

	multiplyScalar( s ) {

		const te = this.elements;

		te[ 0 ] *= s; te[ 3 ] *= s; te[ 6 ] *= s;
		te[ 1 ] *= s; te[ 4 ] *= s; te[ 7 ] *= s;
		te[ 2 ] *= s; te[ 5 ] *= s; te[ 8 ] *= s;

		return this;

	}

	determinant() {

		const te = this.elements;

		const a = te[ 0 ], b = te[ 1 ], c = te[ 2 ],
			d = te[ 3 ], e = te[ 4 ], f = te[ 5 ],
			g = te[ 6 ], h = te[ 7 ], i = te[ 8 ];

		return a * e * i - a * f * h - b * d * i + b * f * g + c * d * h - c * e * g;

	}

	invert() {

		const te = this.elements,

			n11 = te[ 0 ], n21 = te[ 1 ], n31 = te[ 2 ],
			n12 = te[ 3 ], n22 = te[ 4 ], n32 = te[ 5 ],
			n13 = te[ 6 ], n23 = te[ 7 ], n33 = te[ 8 ],

			t11 = n33 * n22 - n32 * n23,
			t12 = n32 * n13 - n33 * n12,
			t13 = n23 * n12 - n22 * n13,

			det = n11 * t11 + n21 * t12 + n31 * t13;

		if ( det === 0 ) return this.set( 0, 0, 0, 0, 0, 0, 0, 0, 0 );

		const detInv = 1 / det;

		te[ 0 ] = t11 * detInv;
		te[ 1 ] = ( n31 * n23 - n33 * n21 ) * detInv;
		te[ 2 ] = ( n32 * n21 - n31 * n22 ) * detInv;

		te[ 3 ] = t12 * detInv;
		te[ 4 ] = ( n33 * n11 - n31 * n13 ) * detInv;
		te[ 5 ] = ( n31 * n12 - n32 * n11 ) * detInv;

		te[ 6 ] = t13 * detInv;
		te[ 7 ] = ( n21 * n13 - n23 * n11 ) * detInv;
		te[ 8 ] = ( n22 * n11 - n21 * n12 ) * detInv;

		return this;

	}

	transpose() {

		let tmp;
		const m = this.elements;

		tmp = m[ 1 ]; m[ 1 ] = m[ 3 ]; m[ 3 ] = tmp;
		tmp = m[ 2 ]; m[ 2 ] = m[ 6 ]; m[ 6 ] = tmp;
		tmp = m[ 5 ]; m[ 5 ] = m[ 7 ]; m[ 7 ] = tmp;

		return this;

	}

	getNormalMatrix( matrix4 ) {

		return this.setFromMatrix4( matrix4 ).invert().transpose();

	}

	transposeIntoArray( r ) {

		const m = this.elements;

		r[ 0 ] = m[ 0 ];
		r[ 1 ] = m[ 3 ];
		r[ 2 ] = m[ 6 ];
		r[ 3 ] = m[ 1 ];
		r[ 4 ] = m[ 4 ];
		r[ 5 ] = m[ 7 ];
		r[ 6 ] = m[ 2 ];
		r[ 7 ] = m[ 5 ];
		r[ 8 ] = m[ 8 ];

		return this;

	}

	setUvTransform( tx, ty, sx, sy, rotation, cx, cy ) {

		const c = Math.cos( rotation );
		const s = Math.sin( rotation );

		this.set(
			sx * c, sx * s, - sx * ( c * cx + s * cy ) + cx + tx,
			- sy * s, sy * c, - sy * ( - s * cx + c * cy ) + cy + ty,
			0, 0, 1
		);

		return this;

	}

	scale( sx, sy ) {

		const te = this.elements;

		te[ 0 ] *= sx; te[ 3 ] *= sx; te[ 6 ] *= sx;
		te[ 1 ] *= sy; te[ 4 ] *= sy; te[ 7 ] *= sy;

		return this;

	}

	rotate( theta ) {

		const c = Math.cos( theta );
		const s = Math.sin( theta );

		const te = this.elements;

		const a11 = te[ 0 ], a12 = te[ 3 ], a13 = te[ 6 ];
		const a21 = te[ 1 ], a22 = te[ 4 ], a23 = te[ 7 ];

		te[ 0 ] = c * a11 + s * a21;
		te[ 3 ] = c * a12 + s * a22;
		te[ 6 ] = c * a13 + s * a23;

		te[ 1 ] = - s * a11 + c * a21;
		te[ 4 ] = - s * a12 + c * a22;
		te[ 7 ] = - s * a13 + c * a23;

		return this;

	}

	translate( tx, ty ) {

		const te = this.elements;

		te[ 0 ] += tx * te[ 2 ]; te[ 3 ] += tx * te[ 5 ]; te[ 6 ] += tx * te[ 8 ];
		te[ 1 ] += ty * te[ 2 ]; te[ 4 ] += ty * te[ 5 ]; te[ 7 ] += ty * te[ 8 ];

		return this;

	}

	equals( matrix ) {

		const te = this.elements;
		const me = matrix.elements;

		for ( let i = 0; i < 9; i ++ ) {

			if ( te[ i ] !== me[ i ] ) return false;

		}

		return true;

	}

	fromArray( array, offset = 0 ) {

		for ( let i = 0; i < 9; i ++ ) {

			this.elements[ i ] = array[ i + offset ];

		}

		return this;

	}

	toArray( array = [], offset = 0 ) {

		const te = this.elements;

		array[ offset ] = te[ 0 ];
		array[ offset + 1 ] = te[ 1 ];
		array[ offset + 2 ] = te[ 2 ];

		array[ offset + 3 ] = te[ 3 ];
		array[ offset + 4 ] = te[ 4 ];
		array[ offset + 5 ] = te[ 5 ];

		array[ offset + 6 ] = te[ 6 ];
		array[ offset + 7 ] = te[ 7 ];
		array[ offset + 8 ] = te[ 8 ];

		return array;

	}

	clone() {

		return new this.constructor().fromArray( this.elements );

	}

}

Matrix3.prototype.isMatrix3 = true;

function arrayNeedsUint32( array ) {

	// assumes larger values usually on last

	for ( let i = array.length - 1; i >= 0; -- i ) {

		if ( array[ i ] > 65535 ) return true;

	}

	return false;

}

const TYPED_ARRAYS = {
	Int8Array: Int8Array,
	Uint8Array: Uint8Array,
	Uint8ClampedArray: Uint8ClampedArray,
	Int16Array: Int16Array,
	Uint16Array: Uint16Array,
	Int32Array: Int32Array,
	Uint32Array: Uint32Array,
	Float32Array: Float32Array,
	Float64Array: Float64Array
};

function getTypedArray( type, buffer ) {

	return new TYPED_ARRAYS[ type ]( buffer );

}

function createElementNS( name ) {

	return document.createElementNS( 'http://www.w3.org/1999/xhtml', name );

}

const _colorKeywords = { 'aliceblue': 0xF0F8FF, 'antiquewhite': 0xFAEBD7, 'aqua': 0x00FFFF, 'aquamarine': 0x7FFFD4, 'azure': 0xF0FFFF,
	'beige': 0xF5F5DC, 'bisque': 0xFFE4C4, 'black': 0x000000, 'blanchedalmond': 0xFFEBCD, 'blue': 0x0000FF, 'blueviolet': 0x8A2BE2,
	'brown': 0xA52A2A, 'burlywood': 0xDEB887, 'cadetblue': 0x5F9EA0, 'chartreuse': 0x7FFF00, 'chocolate': 0xD2691E, 'coral': 0xFF7F50,
	'cornflowerblue': 0x6495ED, 'cornsilk': 0xFFF8DC, 'crimson': 0xDC143C, 'cyan': 0x00FFFF, 'darkblue': 0x00008B, 'darkcyan': 0x008B8B,
	'darkgoldenrod': 0xB8860B, 'darkgray': 0xA9A9A9, 'darkgreen': 0x006400, 'darkgrey': 0xA9A9A9, 'darkkhaki': 0xBDB76B, 'darkmagenta': 0x8B008B,
	'darkolivegreen': 0x556B2F, 'darkorange': 0xFF8C00, 'darkorchid': 0x9932CC, 'darkred': 0x8B0000, 'darksalmon': 0xE9967A, 'darkseagreen': 0x8FBC8F,
	'darkslateblue': 0x483D8B, 'darkslategray': 0x2F4F4F, 'darkslategrey': 0x2F4F4F, 'darkturquoise': 0x00CED1, 'darkviolet': 0x9400D3,
	'deeppink': 0xFF1493, 'deepskyblue': 0x00BFFF, 'dimgray': 0x696969, 'dimgrey': 0x696969, 'dodgerblue': 0x1E90FF, 'firebrick': 0xB22222,
	'floralwhite': 0xFFFAF0, 'forestgreen': 0x228B22, 'fuchsia': 0xFF00FF, 'gainsboro': 0xDCDCDC, 'ghostwhite': 0xF8F8FF, 'gold': 0xFFD700,
	'goldenrod': 0xDAA520, 'gray': 0x808080, 'green': 0x008000, 'greenyellow': 0xADFF2F, 'grey': 0x808080, 'honeydew': 0xF0FFF0, 'hotpink': 0xFF69B4,
	'indianred': 0xCD5C5C, 'indigo': 0x4B0082, 'ivory': 0xFFFFF0, 'khaki': 0xF0E68C, 'lavender': 0xE6E6FA, 'lavenderblush': 0xFFF0F5, 'lawngreen': 0x7CFC00,
	'lemonchiffon': 0xFFFACD, 'lightblue': 0xADD8E6, 'lightcoral': 0xF08080, 'lightcyan': 0xE0FFFF, 'lightgoldenrodyellow': 0xFAFAD2, 'lightgray': 0xD3D3D3,
	'lightgreen': 0x90EE90, 'lightgrey': 0xD3D3D3, 'lightpink': 0xFFB6C1, 'lightsalmon': 0xFFA07A, 'lightseagreen': 0x20B2AA, 'lightskyblue': 0x87CEFA,
	'lightslategray': 0x778899, 'lightslategrey': 0x778899, 'lightsteelblue': 0xB0C4DE, 'lightyellow': 0xFFFFE0, 'lime': 0x00FF00, 'limegreen': 0x32CD32,
	'linen': 0xFAF0E6, 'magenta': 0xFF00FF, 'maroon': 0x800000, 'mediumaquamarine': 0x66CDAA, 'mediumblue': 0x0000CD, 'mediumorchid': 0xBA55D3,
	'mediumpurple': 0x9370DB, 'mediumseagreen': 0x3CB371, 'mediumslateblue': 0x7B68EE, 'mediumspringgreen': 0x00FA9A, 'mediumturquoise': 0x48D1CC,
	'mediumvioletred': 0xC71585, 'midnightblue': 0x191970, 'mintcream': 0xF5FFFA, 'mistyrose': 0xFFE4E1, 'moccasin': 0xFFE4B5, 'navajowhite': 0xFFDEAD,
	'navy': 0x000080, 'oldlace': 0xFDF5E6, 'olive': 0x808000, 'olivedrab': 0x6B8E23, 'orange': 0xFFA500, 'orangered': 0xFF4500, 'orchid': 0xDA70D6,
	'palegoldenrod': 0xEEE8AA, 'palegreen': 0x98FB98, 'paleturquoise': 0xAFEEEE, 'palevioletred': 0xDB7093, 'papayawhip': 0xFFEFD5, 'peachpuff': 0xFFDAB9,
	'peru': 0xCD853F, 'pink': 0xFFC0CB, 'plum': 0xDDA0DD, 'powderblue': 0xB0E0E6, 'purple': 0x800080, 'rebeccapurple': 0x663399, 'red': 0xFF0000, 'rosybrown': 0xBC8F8F,
	'royalblue': 0x4169E1, 'saddlebrown': 0x8B4513, 'salmon': 0xFA8072, 'sandybrown': 0xF4A460, 'seagreen': 0x2E8B57, 'seashell': 0xFFF5EE,
	'sienna': 0xA0522D, 'silver': 0xC0C0C0, 'skyblue': 0x87CEEB, 'slateblue': 0x6A5ACD, 'slategray': 0x708090, 'slategrey': 0x708090, 'snow': 0xFFFAFA,
	'springgreen': 0x00FF7F, 'steelblue': 0x4682B4, 'tan': 0xD2B48C, 'teal': 0x008080, 'thistle': 0xD8BFD8, 'tomato': 0xFF6347, 'turquoise': 0x40E0D0,
	'violet': 0xEE82EE, 'wheat': 0xF5DEB3, 'white': 0xFFFFFF, 'whitesmoke': 0xF5F5F5, 'yellow': 0xFFFF00, 'yellowgreen': 0x9ACD32 };

const _hslA = { h: 0, s: 0, l: 0 };
const _hslB = { h: 0, s: 0, l: 0 };

function hue2rgb( p, q, t ) {

	if ( t < 0 ) t += 1;
	if ( t > 1 ) t -= 1;
	if ( t < 1 / 6 ) return p + ( q - p ) * 6 * t;
	if ( t < 1 / 2 ) return q;
	if ( t < 2 / 3 ) return p + ( q - p ) * 6 * ( 2 / 3 - t );
	return p;

}

function SRGBToLinear( c ) {

	return ( c < 0.04045 ) ? c * 0.0773993808 : Math.pow( c * 0.9478672986 + 0.0521327014, 2.4 );

}

function LinearToSRGB( c ) {

	return ( c < 0.0031308 ) ? c * 12.92 : 1.055 * ( Math.pow( c, 0.41666 ) ) - 0.055;

}

class Color {

	constructor( r, g, b ) {

		if ( g === undefined && b === undefined ) {

			// r is THREE.Color, hex or string
			return this.set( r );

		}

		return this.setRGB( r, g, b );

	}

	set( value ) {

		if ( value && value.isColor ) {

			this.copy( value );

		} else if ( typeof value === 'number' ) {

			this.setHex( value );

		} else if ( typeof value === 'string' ) {

			this.setStyle( value );

		}

		return this;

	}

	setScalar( scalar ) {

		this.r = scalar;
		this.g = scalar;
		this.b = scalar;

		return this;

	}

	setHex( hex ) {

		hex = Math.floor( hex );

		this.r = ( hex >> 16 & 255 ) / 255;
		this.g = ( hex >> 8 & 255 ) / 255;
		this.b = ( hex & 255 ) / 255;

		return this;

	}

	setRGB( r, g, b ) {

		this.r = r;
		this.g = g;
		this.b = b;

		return this;

	}

	setHSL( h, s, l ) {

		// h,s,l ranges are in 0.0 - 1.0
		h = euclideanModulo( h, 1 );
		s = clamp$1( s, 0, 1 );
		l = clamp$1( l, 0, 1 );

		if ( s === 0 ) {

			this.r = this.g = this.b = l;

		} else {

			const p = l <= 0.5 ? l * ( 1 + s ) : l + s - ( l * s );
			const q = ( 2 * l ) - p;

			this.r = hue2rgb( q, p, h + 1 / 3 );
			this.g = hue2rgb( q, p, h );
			this.b = hue2rgb( q, p, h - 1 / 3 );

		}

		return this;

	}

	setStyle( style ) {

		function handleAlpha( string ) {

			if ( string === undefined ) return;

			if ( parseFloat( string ) < 1 ) {

				console.warn( 'THREE.Color: Alpha component of ' + style + ' will be ignored.' );

			}

		}


		let m;

		if ( m = /^((?:rgb|hsl)a?)\(([^\)]*)\)/.exec( style ) ) {

			// rgb / hsl

			let color;
			const name = m[ 1 ];
			const components = m[ 2 ];

			switch ( name ) {

				case 'rgb':
				case 'rgba':

					if ( color = /^\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*(?:,\s*(\d*\.?\d+)\s*)?$/.exec( components ) ) {

						// rgb(255,0,0) rgba(255,0,0,0.5)
						this.r = Math.min( 255, parseInt( color[ 1 ], 10 ) ) / 255;
						this.g = Math.min( 255, parseInt( color[ 2 ], 10 ) ) / 255;
						this.b = Math.min( 255, parseInt( color[ 3 ], 10 ) ) / 255;

						handleAlpha( color[ 4 ] );

						return this;

					}

					if ( color = /^\s*(\d+)\%\s*,\s*(\d+)\%\s*,\s*(\d+)\%\s*(?:,\s*(\d*\.?\d+)\s*)?$/.exec( components ) ) {

						// rgb(100%,0%,0%) rgba(100%,0%,0%,0.5)
						this.r = Math.min( 100, parseInt( color[ 1 ], 10 ) ) / 100;
						this.g = Math.min( 100, parseInt( color[ 2 ], 10 ) ) / 100;
						this.b = Math.min( 100, parseInt( color[ 3 ], 10 ) ) / 100;

						handleAlpha( color[ 4 ] );

						return this;

					}

					break;

				case 'hsl':
				case 'hsla':

					if ( color = /^\s*(\d*\.?\d+)\s*,\s*(\d+)\%\s*,\s*(\d+)\%\s*(?:,\s*(\d*\.?\d+)\s*)?$/.exec( components ) ) {

						// hsl(120,50%,50%) hsla(120,50%,50%,0.5)
						const h = parseFloat( color[ 1 ] ) / 360;
						const s = parseInt( color[ 2 ], 10 ) / 100;
						const l = parseInt( color[ 3 ], 10 ) / 100;

						handleAlpha( color[ 4 ] );

						return this.setHSL( h, s, l );

					}

					break;

			}

		} else if ( m = /^\#([A-Fa-f\d]+)$/.exec( style ) ) {

			// hex color

			const hex = m[ 1 ];
			const size = hex.length;

			if ( size === 3 ) {

				// #ff0
				this.r = parseInt( hex.charAt( 0 ) + hex.charAt( 0 ), 16 ) / 255;
				this.g = parseInt( hex.charAt( 1 ) + hex.charAt( 1 ), 16 ) / 255;
				this.b = parseInt( hex.charAt( 2 ) + hex.charAt( 2 ), 16 ) / 255;

				return this;

			} else if ( size === 6 ) {

				// #ff0000
				this.r = parseInt( hex.charAt( 0 ) + hex.charAt( 1 ), 16 ) / 255;
				this.g = parseInt( hex.charAt( 2 ) + hex.charAt( 3 ), 16 ) / 255;
				this.b = parseInt( hex.charAt( 4 ) + hex.charAt( 5 ), 16 ) / 255;

				return this;

			}

		}

		if ( style && style.length > 0 ) {

			return this.setColorName( style );

		}

		return this;

	}

	setColorName( style ) {

		// color keywords
		const hex = _colorKeywords[ style.toLowerCase() ];

		if ( hex !== undefined ) {

			// red
			this.setHex( hex );

		} else {

			// unknown color
			console.warn( 'THREE.Color: Unknown color ' + style );

		}

		return this;

	}

	clone() {

		return new this.constructor( this.r, this.g, this.b );

	}

	copy( color ) {

		this.r = color.r;
		this.g = color.g;
		this.b = color.b;

		return this;

	}

	copySRGBToLinear( color ) {

		this.r = SRGBToLinear( color.r );
		this.g = SRGBToLinear( color.g );
		this.b = SRGBToLinear( color.b );

		return this;

	}

	copyLinearToSRGB( color ) {

		this.r = LinearToSRGB( color.r );
		this.g = LinearToSRGB( color.g );
		this.b = LinearToSRGB( color.b );

		return this;

	}

	convertSRGBToLinear() {

		this.copySRGBToLinear( this );

		return this;

	}

	convertLinearToSRGB() {

		this.copyLinearToSRGB( this );

		return this;

	}

	getHex() {

		return ( this.r * 255 ) << 16 ^ ( this.g * 255 ) << 8 ^ ( this.b * 255 ) << 0;

	}

	getHexString() {

		return ( '000000' + this.getHex().toString( 16 ) ).slice( - 6 );

	}

	getHSL( target ) {

		// h,s,l ranges are in 0.0 - 1.0

		const r = this.r, g = this.g, b = this.b;

		const max = Math.max( r, g, b );
		const min = Math.min( r, g, b );

		let hue, saturation;
		const lightness = ( min + max ) / 2.0;

		if ( min === max ) {

			hue = 0;
			saturation = 0;

		} else {

			const delta = max - min;

			saturation = lightness <= 0.5 ? delta / ( max + min ) : delta / ( 2 - max - min );

			switch ( max ) {

				case r: hue = ( g - b ) / delta + ( g < b ? 6 : 0 ); break;
				case g: hue = ( b - r ) / delta + 2; break;
				case b: hue = ( r - g ) / delta + 4; break;

			}

			hue /= 6;

		}

		target.h = hue;
		target.s = saturation;
		target.l = lightness;

		return target;

	}

	getStyle() {

		return 'rgb(' + ( ( this.r * 255 ) | 0 ) + ',' + ( ( this.g * 255 ) | 0 ) + ',' + ( ( this.b * 255 ) | 0 ) + ')';

	}

	offsetHSL( h, s, l ) {

		this.getHSL( _hslA );

		_hslA.h += h; _hslA.s += s; _hslA.l += l;

		this.setHSL( _hslA.h, _hslA.s, _hslA.l );

		return this;

	}

	add( color ) {

		this.r += color.r;
		this.g += color.g;
		this.b += color.b;

		return this;

	}

	addColors( color1, color2 ) {

		this.r = color1.r + color2.r;
		this.g = color1.g + color2.g;
		this.b = color1.b + color2.b;

		return this;

	}

	addScalar( s ) {

		this.r += s;
		this.g += s;
		this.b += s;

		return this;

	}

	sub( color ) {

		this.r = Math.max( 0, this.r - color.r );
		this.g = Math.max( 0, this.g - color.g );
		this.b = Math.max( 0, this.b - color.b );

		return this;

	}

	multiply( color ) {

		this.r *= color.r;
		this.g *= color.g;
		this.b *= color.b;

		return this;

	}

	multiplyScalar( s ) {

		this.r *= s;
		this.g *= s;
		this.b *= s;

		return this;

	}

	lerp( color, alpha ) {

		this.r += ( color.r - this.r ) * alpha;
		this.g += ( color.g - this.g ) * alpha;
		this.b += ( color.b - this.b ) * alpha;

		return this;

	}

	lerpColors( color1, color2, alpha ) {

		this.r = color1.r + ( color2.r - color1.r ) * alpha;
		this.g = color1.g + ( color2.g - color1.g ) * alpha;
		this.b = color1.b + ( color2.b - color1.b ) * alpha;

		return this;

	}

	lerpHSL( color, alpha ) {

		this.getHSL( _hslA );
		color.getHSL( _hslB );

		const h = lerp( _hslA.h, _hslB.h, alpha );
		const s = lerp( _hslA.s, _hslB.s, alpha );
		const l = lerp( _hslA.l, _hslB.l, alpha );

		this.setHSL( h, s, l );

		return this;

	}

	equals( c ) {

		return ( c.r === this.r ) && ( c.g === this.g ) && ( c.b === this.b );

	}

	fromArray( array, offset = 0 ) {

		this.r = array[ offset ];
		this.g = array[ offset + 1 ];
		this.b = array[ offset + 2 ];

		return this;

	}

	toArray( array = [], offset = 0 ) {

		array[ offset ] = this.r;
		array[ offset + 1 ] = this.g;
		array[ offset + 2 ] = this.b;

		return array;

	}

	fromBufferAttribute( attribute, index ) {

		this.r = attribute.getX( index );
		this.g = attribute.getY( index );
		this.b = attribute.getZ( index );

		if ( attribute.normalized === true ) {

			// assuming Uint8Array

			this.r /= 255;
			this.g /= 255;
			this.b /= 255;

		}

		return this;

	}

	toJSON() {

		return this.getHex();

	}

}

Color.NAMES = _colorKeywords;

Color.prototype.isColor = true;
Color.prototype.r = 1;
Color.prototype.g = 1;
Color.prototype.b = 1;

let _canvas;

class ImageUtils {

	static getDataURL( image ) {

		if ( /^data:/i.test( image.src ) ) {

			return image.src;

		}

		if ( typeof HTMLCanvasElement == 'undefined' ) {

			return image.src;

		}

		let canvas;

		if ( image instanceof HTMLCanvasElement ) {

			canvas = image;

		} else {

			if ( _canvas === undefined ) _canvas = createElementNS( 'canvas' );

			_canvas.width = image.width;
			_canvas.height = image.height;

			const context = _canvas.getContext( '2d' );

			if ( image instanceof ImageData ) {

				context.putImageData( image, 0, 0 );

			} else {

				context.drawImage( image, 0, 0, image.width, image.height );

			}

			canvas = _canvas;

		}

		if ( canvas.width > 2048 || canvas.height > 2048 ) {

			console.warn( 'THREE.ImageUtils.getDataURL: Image converted to jpg for performance reasons', image );

			return canvas.toDataURL( 'image/jpeg', 0.6 );

		} else {

			return canvas.toDataURL( 'image/png' );

		}

	}

	static sRGBToLinear( image ) {

		if ( ( typeof HTMLImageElement !== 'undefined' && image instanceof HTMLImageElement ) ||
			( typeof HTMLCanvasElement !== 'undefined' && image instanceof HTMLCanvasElement ) ||
			( typeof ImageBitmap !== 'undefined' && image instanceof ImageBitmap ) ) {

			const canvas = createElementNS( 'canvas' );

			canvas.width = image.width;
			canvas.height = image.height;

			const context = canvas.getContext( '2d' );
			context.drawImage( image, 0, 0, image.width, image.height );

			const imageData = context.getImageData( 0, 0, image.width, image.height );
			const data = imageData.data;

			for ( let i = 0; i < data.length; i ++ ) {

				data[ i ] = SRGBToLinear( data[ i ] / 255 ) * 255;

			}

			context.putImageData( imageData, 0, 0 );

			return canvas;

		} else if ( image.data ) {

			const data = image.data.slice( 0 );

			for ( let i = 0; i < data.length; i ++ ) {

				if ( data instanceof Uint8Array || data instanceof Uint8ClampedArray ) {

					data[ i ] = Math.floor( SRGBToLinear( data[ i ] / 255 ) * 255 );

				} else {

					// assuming float

					data[ i ] = SRGBToLinear( data[ i ] );

				}

			}

			return {
				data: data,
				width: image.width,
				height: image.height
			};

		} else {

			console.warn( 'THREE.ImageUtils.sRGBToLinear(): Unsupported image type. No color space conversion applied.' );
			return image;

		}

	}

}

class Source {

	constructor( data = null ) {

		this.uuid = generateUUID();

		this.data = data;

		this.version = 0;

	}

	set needsUpdate( value ) {

		if ( value === true ) this.version ++;

	}

	toJSON( meta ) {

		const isRootObject = ( meta === undefined || typeof meta === 'string' );

		if ( ! isRootObject && meta.images[ this.uuid ] !== undefined ) {

			return meta.images[ this.uuid ];

		}

		const output = {
			uuid: this.uuid,
			url: ''
		};

		const data = this.data;

		if ( data !== null ) {

			let url;

			if ( Array.isArray( data ) ) {

				// cube texture

				url = [];

				for ( let i = 0, l = data.length; i < l; i ++ ) {

					if ( data[ i ].isDataTexture ) {

						url.push( serializeImage( data[ i ].image ) );

					} else {

						url.push( serializeImage( data[ i ] ) );

					}

				}

			} else {

				// texture

				url = serializeImage( data );

			}

			output.url = url;

		}

		if ( ! isRootObject ) {

			meta.images[ this.uuid ] = output;

		}

		return output;

	}

}

function serializeImage( image ) {

	if ( ( typeof HTMLImageElement !== 'undefined' && image instanceof HTMLImageElement ) ||
		( typeof HTMLCanvasElement !== 'undefined' && image instanceof HTMLCanvasElement ) ||
		( typeof ImageBitmap !== 'undefined' && image instanceof ImageBitmap ) ) {

		// default images

		return ImageUtils.getDataURL( image );

	} else {

		if ( image.data ) {

			// images of DataTexture

			return {
				data: Array.prototype.slice.call( image.data ),
				width: image.width,
				height: image.height,
				type: image.data.constructor.name
			};

		} else {

			console.warn( 'THREE.Texture: Unable to serialize Texture.' );
			return {};

		}

	}

}

Source.prototype.isSource = true;

let textureId = 0;

class Texture extends EventDispatcher {

	constructor( image = Texture.DEFAULT_IMAGE, mapping = Texture.DEFAULT_MAPPING, wrapS = ClampToEdgeWrapping, wrapT = ClampToEdgeWrapping, magFilter = LinearFilter, minFilter = LinearMipmapLinearFilter, format = RGBAFormat, type = UnsignedByteType, anisotropy = 1, encoding = LinearEncoding ) {

		super();

		Object.defineProperty( this, 'id', { value: textureId ++ } );

		this.uuid = generateUUID();

		this.name = '';

		this.source = new Source( image );
		this.mipmaps = [];

		this.mapping = mapping;

		this.wrapS = wrapS;
		this.wrapT = wrapT;

		this.magFilter = magFilter;
		this.minFilter = minFilter;

		this.anisotropy = anisotropy;

		this.format = format;
		this.internalFormat = null;
		this.type = type;

		this.offset = new Vector2( 0, 0 );
		this.repeat = new Vector2( 1, 1 );
		this.center = new Vector2( 0, 0 );
		this.rotation = 0;

		this.matrixAutoUpdate = true;
		this.matrix = new Matrix3();

		this.generateMipmaps = true;
		this.premultiplyAlpha = false;
		this.flipY = true;
		this.unpackAlignment = 4;	// valid values: 1, 2, 4, 8 (see http://www.khronos.org/opengles/sdk/docs/man/xhtml/glPixelStorei.xml)

		// Values of encoding !== THREE.LinearEncoding only supported on map, envMap and emissiveMap.
		//
		// Also changing the encoding after already used by a Material will not automatically make the Material
		// update. You need to explicitly call Material.needsUpdate to trigger it to recompile.
		this.encoding = encoding;

		this.userData = {};

		this.version = 0;
		this.onUpdate = null;

		this.isRenderTargetTexture = false; // indicates whether a texture belongs to a render target or not
		this.needsPMREMUpdate = false; // indicates whether this texture should be processed by PMREMGenerator or not (only relevant for render target textures)

	}

	get image() {

		return this.source.data;

	}

	set image( value ) {

		this.source.data = value;

	}

	updateMatrix() {

		this.matrix.setUvTransform( this.offset.x, this.offset.y, this.repeat.x, this.repeat.y, this.rotation, this.center.x, this.center.y );

	}

	clone() {

		return new this.constructor().copy( this );

	}

	copy( source ) {

		this.name = source.name;

		this.source = source.source;
		this.mipmaps = source.mipmaps.slice( 0 );

		this.mapping = source.mapping;

		this.wrapS = source.wrapS;
		this.wrapT = source.wrapT;

		this.magFilter = source.magFilter;
		this.minFilter = source.minFilter;

		this.anisotropy = source.anisotropy;

		this.format = source.format;
		this.internalFormat = source.internalFormat;
		this.type = source.type;

		this.offset.copy( source.offset );
		this.repeat.copy( source.repeat );
		this.center.copy( source.center );
		this.rotation = source.rotation;

		this.matrixAutoUpdate = source.matrixAutoUpdate;
		this.matrix.copy( source.matrix );

		this.generateMipmaps = source.generateMipmaps;
		this.premultiplyAlpha = source.premultiplyAlpha;
		this.flipY = source.flipY;
		this.unpackAlignment = source.unpackAlignment;
		this.encoding = source.encoding;

		this.userData = JSON.parse( JSON.stringify( source.userData ) );

		this.needsUpdate = true;

		return this;

	}

	toJSON( meta ) {

		const isRootObject = ( meta === undefined || typeof meta === 'string' );

		if ( ! isRootObject && meta.textures[ this.uuid ] !== undefined ) {

			return meta.textures[ this.uuid ];

		}

		const output = {

			metadata: {
				version: 4.5,
				type: 'Texture',
				generator: 'Texture.toJSON'
			},

			uuid: this.uuid,
			name: this.name,

			image: this.source.toJSON( meta ).uuid,

			mapping: this.mapping,

			repeat: [ this.repeat.x, this.repeat.y ],
			offset: [ this.offset.x, this.offset.y ],
			center: [ this.center.x, this.center.y ],
			rotation: this.rotation,

			wrap: [ this.wrapS, this.wrapT ],

			format: this.format,
			type: this.type,
			encoding: this.encoding,

			minFilter: this.minFilter,
			magFilter: this.magFilter,
			anisotropy: this.anisotropy,

			flipY: this.flipY,

			premultiplyAlpha: this.premultiplyAlpha,
			unpackAlignment: this.unpackAlignment

		};

		if ( JSON.stringify( this.userData ) !== '{}' ) output.userData = this.userData;

		if ( ! isRootObject ) {

			meta.textures[ this.uuid ] = output;

		}

		return output;

	}

	dispose() {

		this.dispatchEvent( { type: 'dispose' } );

	}

	transformUv( uv ) {

		if ( this.mapping !== UVMapping ) return uv;

		uv.applyMatrix3( this.matrix );

		if ( uv.x < 0 || uv.x > 1 ) {

			switch ( this.wrapS ) {

				case RepeatWrapping:

					uv.x = uv.x - Math.floor( uv.x );
					break;

				case ClampToEdgeWrapping:

					uv.x = uv.x < 0 ? 0 : 1;
					break;

				case MirroredRepeatWrapping:

					if ( Math.abs( Math.floor( uv.x ) % 2 ) === 1 ) {

						uv.x = Math.ceil( uv.x ) - uv.x;

					} else {

						uv.x = uv.x - Math.floor( uv.x );

					}

					break;

			}

		}

		if ( uv.y < 0 || uv.y > 1 ) {

			switch ( this.wrapT ) {

				case RepeatWrapping:

					uv.y = uv.y - Math.floor( uv.y );
					break;

				case ClampToEdgeWrapping:

					uv.y = uv.y < 0 ? 0 : 1;
					break;

				case MirroredRepeatWrapping:

					if ( Math.abs( Math.floor( uv.y ) % 2 ) === 1 ) {

						uv.y = Math.ceil( uv.y ) - uv.y;

					} else {

						uv.y = uv.y - Math.floor( uv.y );

					}

					break;

			}

		}

		if ( this.flipY ) {

			uv.y = 1 - uv.y;

		}

		return uv;

	}

	set needsUpdate( value ) {

		if ( value === true ) {

			this.version ++;
			this.source.needsUpdate = true;

		}

	}

}

Texture.DEFAULT_IMAGE = null;
Texture.DEFAULT_MAPPING = UVMapping;

Texture.prototype.isTexture = true;

class Vector4$1 {

	constructor( x = 0, y = 0, z = 0, w = 1 ) {

		this.x = x;
		this.y = y;
		this.z = z;
		this.w = w;

	}

	get width() {

		return this.z;

	}

	set width( value ) {

		this.z = value;

	}

	get height() {

		return this.w;

	}

	set height( value ) {

		this.w = value;

	}

	set( x, y, z, w ) {

		this.x = x;
		this.y = y;
		this.z = z;
		this.w = w;

		return this;

	}

	setScalar( scalar ) {

		this.x = scalar;
		this.y = scalar;
		this.z = scalar;
		this.w = scalar;

		return this;

	}

	setX( x ) {

		this.x = x;

		return this;

	}

	setY( y ) {

		this.y = y;

		return this;

	}

	setZ( z ) {

		this.z = z;

		return this;

	}

	setW( w ) {

		this.w = w;

		return this;

	}

	setComponent( index, value ) {

		switch ( index ) {

			case 0: this.x = value; break;
			case 1: this.y = value; break;
			case 2: this.z = value; break;
			case 3: this.w = value; break;
			default: throw new Error( 'index is out of range: ' + index );

		}

		return this;

	}

	getComponent( index ) {

		switch ( index ) {

			case 0: return this.x;
			case 1: return this.y;
			case 2: return this.z;
			case 3: return this.w;
			default: throw new Error( 'index is out of range: ' + index );

		}

	}

	clone() {

		return new this.constructor( this.x, this.y, this.z, this.w );

	}

	copy( v ) {

		this.x = v.x;
		this.y = v.y;
		this.z = v.z;
		this.w = ( v.w !== undefined ) ? v.w : 1;

		return this;

	}

	add( v, w ) {

		if ( w !== undefined ) {

			console.warn( 'THREE.Vector4: .add() now only accepts one argument. Use .addVectors( a, b ) instead.' );
			return this.addVectors( v, w );

		}

		this.x += v.x;
		this.y += v.y;
		this.z += v.z;
		this.w += v.w;

		return this;

	}

	addScalar( s ) {

		this.x += s;
		this.y += s;
		this.z += s;
		this.w += s;

		return this;

	}

	addVectors( a, b ) {

		this.x = a.x + b.x;
		this.y = a.y + b.y;
		this.z = a.z + b.z;
		this.w = a.w + b.w;

		return this;

	}

	addScaledVector( v, s ) {

		this.x += v.x * s;
		this.y += v.y * s;
		this.z += v.z * s;
		this.w += v.w * s;

		return this;

	}

	sub( v, w ) {

		if ( w !== undefined ) {

			console.warn( 'THREE.Vector4: .sub() now only accepts one argument. Use .subVectors( a, b ) instead.' );
			return this.subVectors( v, w );

		}

		this.x -= v.x;
		this.y -= v.y;
		this.z -= v.z;
		this.w -= v.w;

		return this;

	}

	subScalar( s ) {

		this.x -= s;
		this.y -= s;
		this.z -= s;
		this.w -= s;

		return this;

	}

	subVectors( a, b ) {

		this.x = a.x - b.x;
		this.y = a.y - b.y;
		this.z = a.z - b.z;
		this.w = a.w - b.w;

		return this;

	}

	multiply( v ) {

		this.x *= v.x;
		this.y *= v.y;
		this.z *= v.z;
		this.w *= v.w;

		return this;

	}

	multiplyScalar( scalar ) {

		this.x *= scalar;
		this.y *= scalar;
		this.z *= scalar;
		this.w *= scalar;

		return this;

	}

	applyMatrix4( m ) {

		const x = this.x, y = this.y, z = this.z, w = this.w;
		const e = m.elements;

		this.x = e[ 0 ] * x + e[ 4 ] * y + e[ 8 ] * z + e[ 12 ] * w;
		this.y = e[ 1 ] * x + e[ 5 ] * y + e[ 9 ] * z + e[ 13 ] * w;
		this.z = e[ 2 ] * x + e[ 6 ] * y + e[ 10 ] * z + e[ 14 ] * w;
		this.w = e[ 3 ] * x + e[ 7 ] * y + e[ 11 ] * z + e[ 15 ] * w;

		return this;

	}

	divideScalar( scalar ) {

		return this.multiplyScalar( 1 / scalar );

	}

	setAxisAngleFromQuaternion( q ) {

		// http://www.euclideanspace.com/maths/geometry/rotations/conversions/quaternionToAngle/index.htm

		// q is assumed to be normalized

		this.w = 2 * Math.acos( q.w );

		const s = Math.sqrt( 1 - q.w * q.w );

		if ( s < 0.0001 ) {

			this.x = 1;
			this.y = 0;
			this.z = 0;

		} else {

			this.x = q.x / s;
			this.y = q.y / s;
			this.z = q.z / s;

		}

		return this;

	}

	setAxisAngleFromRotationMatrix( m ) {

		// http://www.euclideanspace.com/maths/geometry/rotations/conversions/matrixToAngle/index.htm

		// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)

		let angle, x, y, z; // variables for result
		const epsilon = 0.01,		// margin to allow for rounding errors
			epsilon2 = 0.1,		// margin to distinguish between 0 and 180 degrees

			te = m.elements,

			m11 = te[ 0 ], m12 = te[ 4 ], m13 = te[ 8 ],
			m21 = te[ 1 ], m22 = te[ 5 ], m23 = te[ 9 ],
			m31 = te[ 2 ], m32 = te[ 6 ], m33 = te[ 10 ];

		if ( ( Math.abs( m12 - m21 ) < epsilon ) &&
		     ( Math.abs( m13 - m31 ) < epsilon ) &&
		     ( Math.abs( m23 - m32 ) < epsilon ) ) {

			// singularity found
			// first check for identity matrix which must have +1 for all terms
			// in leading diagonal and zero in other terms

			if ( ( Math.abs( m12 + m21 ) < epsilon2 ) &&
			     ( Math.abs( m13 + m31 ) < epsilon2 ) &&
			     ( Math.abs( m23 + m32 ) < epsilon2 ) &&
			     ( Math.abs( m11 + m22 + m33 - 3 ) < epsilon2 ) ) {

				// this singularity is identity matrix so angle = 0

				this.set( 1, 0, 0, 0 );

				return this; // zero angle, arbitrary axis

			}

			// otherwise this singularity is angle = 180

			angle = Math.PI;

			const xx = ( m11 + 1 ) / 2;
			const yy = ( m22 + 1 ) / 2;
			const zz = ( m33 + 1 ) / 2;
			const xy = ( m12 + m21 ) / 4;
			const xz = ( m13 + m31 ) / 4;
			const yz = ( m23 + m32 ) / 4;

			if ( ( xx > yy ) && ( xx > zz ) ) {

				// m11 is the largest diagonal term

				if ( xx < epsilon ) {

					x = 0;
					y = 0.707106781;
					z = 0.707106781;

				} else {

					x = Math.sqrt( xx );
					y = xy / x;
					z = xz / x;

				}

			} else if ( yy > zz ) {

				// m22 is the largest diagonal term

				if ( yy < epsilon ) {

					x = 0.707106781;
					y = 0;
					z = 0.707106781;

				} else {

					y = Math.sqrt( yy );
					x = xy / y;
					z = yz / y;

				}

			} else {

				// m33 is the largest diagonal term so base result on this

				if ( zz < epsilon ) {

					x = 0.707106781;
					y = 0.707106781;
					z = 0;

				} else {

					z = Math.sqrt( zz );
					x = xz / z;
					y = yz / z;

				}

			}

			this.set( x, y, z, angle );

			return this; // return 180 deg rotation

		}

		// as we have reached here there are no singularities so we can handle normally

		let s = Math.sqrt( ( m32 - m23 ) * ( m32 - m23 ) +
			( m13 - m31 ) * ( m13 - m31 ) +
			( m21 - m12 ) * ( m21 - m12 ) ); // used to normalize

		if ( Math.abs( s ) < 0.001 ) s = 1;

		// prevent divide by zero, should not happen if matrix is orthogonal and should be
		// caught by singularity test above, but I've left it in just in case

		this.x = ( m32 - m23 ) / s;
		this.y = ( m13 - m31 ) / s;
		this.z = ( m21 - m12 ) / s;
		this.w = Math.acos( ( m11 + m22 + m33 - 1 ) / 2 );

		return this;

	}

	min( v ) {

		this.x = Math.min( this.x, v.x );
		this.y = Math.min( this.y, v.y );
		this.z = Math.min( this.z, v.z );
		this.w = Math.min( this.w, v.w );

		return this;

	}

	max( v ) {

		this.x = Math.max( this.x, v.x );
		this.y = Math.max( this.y, v.y );
		this.z = Math.max( this.z, v.z );
		this.w = Math.max( this.w, v.w );

		return this;

	}

	clamp( min, max ) {

		// assumes min < max, componentwise

		this.x = Math.max( min.x, Math.min( max.x, this.x ) );
		this.y = Math.max( min.y, Math.min( max.y, this.y ) );
		this.z = Math.max( min.z, Math.min( max.z, this.z ) );
		this.w = Math.max( min.w, Math.min( max.w, this.w ) );

		return this;

	}

	clampScalar( minVal, maxVal ) {

		this.x = Math.max( minVal, Math.min( maxVal, this.x ) );
		this.y = Math.max( minVal, Math.min( maxVal, this.y ) );
		this.z = Math.max( minVal, Math.min( maxVal, this.z ) );
		this.w = Math.max( minVal, Math.min( maxVal, this.w ) );

		return this;

	}

	clampLength( min, max ) {

		const length = this.length();

		return this.divideScalar( length || 1 ).multiplyScalar( Math.max( min, Math.min( max, length ) ) );

	}

	floor() {

		this.x = Math.floor( this.x );
		this.y = Math.floor( this.y );
		this.z = Math.floor( this.z );
		this.w = Math.floor( this.w );

		return this;

	}

	ceil() {

		this.x = Math.ceil( this.x );
		this.y = Math.ceil( this.y );
		this.z = Math.ceil( this.z );
		this.w = Math.ceil( this.w );

		return this;

	}

	round() {

		this.x = Math.round( this.x );
		this.y = Math.round( this.y );
		this.z = Math.round( this.z );
		this.w = Math.round( this.w );

		return this;

	}

	roundToZero() {

		this.x = ( this.x < 0 ) ? Math.ceil( this.x ) : Math.floor( this.x );
		this.y = ( this.y < 0 ) ? Math.ceil( this.y ) : Math.floor( this.y );
		this.z = ( this.z < 0 ) ? Math.ceil( this.z ) : Math.floor( this.z );
		this.w = ( this.w < 0 ) ? Math.ceil( this.w ) : Math.floor( this.w );

		return this;

	}

	negate() {

		this.x = - this.x;
		this.y = - this.y;
		this.z = - this.z;
		this.w = - this.w;

		return this;

	}

	dot( v ) {

		return this.x * v.x + this.y * v.y + this.z * v.z + this.w * v.w;

	}

	lengthSq() {

		return this.x * this.x + this.y * this.y + this.z * this.z + this.w * this.w;

	}

	length() {

		return Math.sqrt( this.x * this.x + this.y * this.y + this.z * this.z + this.w * this.w );

	}

	manhattanLength() {

		return Math.abs( this.x ) + Math.abs( this.y ) + Math.abs( this.z ) + Math.abs( this.w );

	}

	normalize() {

		return this.divideScalar( this.length() || 1 );

	}

	setLength( length ) {

		return this.normalize().multiplyScalar( length );

	}

	lerp( v, alpha ) {

		this.x += ( v.x - this.x ) * alpha;
		this.y += ( v.y - this.y ) * alpha;
		this.z += ( v.z - this.z ) * alpha;
		this.w += ( v.w - this.w ) * alpha;

		return this;

	}

	lerpVectors( v1, v2, alpha ) {

		this.x = v1.x + ( v2.x - v1.x ) * alpha;
		this.y = v1.y + ( v2.y - v1.y ) * alpha;
		this.z = v1.z + ( v2.z - v1.z ) * alpha;
		this.w = v1.w + ( v2.w - v1.w ) * alpha;

		return this;

	}

	equals( v ) {

		return ( ( v.x === this.x ) && ( v.y === this.y ) && ( v.z === this.z ) && ( v.w === this.w ) );

	}

	fromArray( array, offset = 0 ) {

		this.x = array[ offset ];
		this.y = array[ offset + 1 ];
		this.z = array[ offset + 2 ];
		this.w = array[ offset + 3 ];

		return this;

	}

	toArray( array = [], offset = 0 ) {

		array[ offset ] = this.x;
		array[ offset + 1 ] = this.y;
		array[ offset + 2 ] = this.z;
		array[ offset + 3 ] = this.w;

		return array;

	}

	fromBufferAttribute( attribute, index, offset ) {

		if ( offset !== undefined ) {

			console.warn( 'THREE.Vector4: offset has been removed from .fromBufferAttribute().' );

		}

		this.x = attribute.getX( index );
		this.y = attribute.getY( index );
		this.z = attribute.getZ( index );
		this.w = attribute.getW( index );

		return this;

	}

	random() {

		this.x = Math.random();
		this.y = Math.random();
		this.z = Math.random();
		this.w = Math.random();

		return this;

	}

	*[ Symbol.iterator ]() {

		yield this.x;
		yield this.y;
		yield this.z;
		yield this.w;

	}

}

Vector4$1.prototype.isVector4 = true;

/*
 In options, we can specify:
 * Texture parameters for an auto-generated target texture
 * depthBuffer/stencilBuffer: Booleans to indicate if we should generate these buffers
*/
class WebGLRenderTarget extends EventDispatcher {

	constructor( width, height, options = {} ) {

		super();

		this.width = width;
		this.height = height;
		this.depth = 1;

		this.scissor = new Vector4$1( 0, 0, width, height );
		this.scissorTest = false;

		this.viewport = new Vector4$1( 0, 0, width, height );

		const image = { width: width, height: height, depth: 1 };

		this.texture = new Texture( image, options.mapping, options.wrapS, options.wrapT, options.magFilter, options.minFilter, options.format, options.type, options.anisotropy, options.encoding );
		this.texture.isRenderTargetTexture = true;

		this.texture.generateMipmaps = options.generateMipmaps !== undefined ? options.generateMipmaps : false;
		this.texture.internalFormat = options.internalFormat !== undefined ? options.internalFormat : null;
		this.texture.minFilter = options.minFilter !== undefined ? options.minFilter : LinearFilter;

		this.depthBuffer = options.depthBuffer !== undefined ? options.depthBuffer : true;
		this.stencilBuffer = options.stencilBuffer !== undefined ? options.stencilBuffer : false;

		this.depthTexture = options.depthTexture !== undefined ? options.depthTexture : null;

		this.samples = options.samples !== undefined ? options.samples : 0;

	}

	setSize( width, height, depth = 1 ) {

		if ( this.width !== width || this.height !== height || this.depth !== depth ) {

			this.width = width;
			this.height = height;
			this.depth = depth;

			this.texture.image.width = width;
			this.texture.image.height = height;
			this.texture.image.depth = depth;

			this.dispose();

		}

		this.viewport.set( 0, 0, width, height );
		this.scissor.set( 0, 0, width, height );

	}

	clone() {

		return new this.constructor().copy( this );

	}

	copy( source ) {

		this.width = source.width;
		this.height = source.height;
		this.depth = source.depth;

		this.viewport.copy( source.viewport );

		this.texture = source.texture.clone();

		// ensure image object is not shared, see #20328

		this.texture.image = Object.assign( {}, source.texture.image );

		this.depthBuffer = source.depthBuffer;
		this.stencilBuffer = source.stencilBuffer;

		if ( source.depthTexture !== null ) this.depthTexture = source.depthTexture.clone();

		this.samples = source.samples;

		return this;

	}

	dispose() {

		this.dispatchEvent( { type: 'dispose' } );

	}

}

WebGLRenderTarget.prototype.isWebGLRenderTarget = true;

class DataArrayTexture extends Texture {

	constructor( data = null, width = 1, height = 1, depth = 1 ) {

		super( null );

		this.image = { data, width, height, depth };

		this.magFilter = NearestFilter;
		this.minFilter = NearestFilter;

		this.wrapR = ClampToEdgeWrapping;

		this.generateMipmaps = false;
		this.flipY = false;
		this.unpackAlignment = 1;

	}

}

DataArrayTexture.prototype.isDataArrayTexture = true;

class WebGLArrayRenderTarget extends WebGLRenderTarget {

	constructor( width, height, depth ) {

		super( width, height );

		this.depth = depth;

		this.texture = new DataArrayTexture( null, width, height, depth );

		this.texture.isRenderTargetTexture = true;

	}

}

WebGLArrayRenderTarget.prototype.isWebGLArrayRenderTarget = true;

class Data3DTexture extends Texture {

	constructor( data = null, width = 1, height = 1, depth = 1 ) {

		// We're going to add .setXXX() methods for setting properties later.
		// Users can still set in DataTexture3D directly.
		//
		//	const texture = new THREE.DataTexture3D( data, width, height, depth );
		// 	texture.anisotropy = 16;
		//
		// See #14839

		super( null );

		this.image = { data, width, height, depth };

		this.magFilter = NearestFilter;
		this.minFilter = NearestFilter;

		this.wrapR = ClampToEdgeWrapping;

		this.generateMipmaps = false;
		this.flipY = false;
		this.unpackAlignment = 1;

	}

}

Data3DTexture.prototype.isData3DTexture = true;

class WebGL3DRenderTarget extends WebGLRenderTarget {

	constructor( width, height, depth ) {

		super( width, height );

		this.depth = depth;

		this.texture = new Data3DTexture( null, width, height, depth );

		this.texture.isRenderTargetTexture = true;

	}

}

WebGL3DRenderTarget.prototype.isWebGL3DRenderTarget = true;

class WebGLMultipleRenderTargets extends WebGLRenderTarget {

	constructor( width, height, count, options = {} ) {

		super( width, height, options );

		const texture = this.texture;

		this.texture = [];

		for ( let i = 0; i < count; i ++ ) {

			this.texture[ i ] = texture.clone();
			this.texture[ i ].isRenderTargetTexture = true;

		}

	}

	setSize( width, height, depth = 1 ) {

		if ( this.width !== width || this.height !== height || this.depth !== depth ) {

			this.width = width;
			this.height = height;
			this.depth = depth;

			for ( let i = 0, il = this.texture.length; i < il; i ++ ) {

				this.texture[ i ].image.width = width;
				this.texture[ i ].image.height = height;
				this.texture[ i ].image.depth = depth;

			}

			this.dispose();

		}

		this.viewport.set( 0, 0, width, height );
		this.scissor.set( 0, 0, width, height );

		return this;

	}

	copy( source ) {

		this.dispose();

		this.width = source.width;
		this.height = source.height;
		this.depth = source.depth;

		this.viewport.set( 0, 0, this.width, this.height );
		this.scissor.set( 0, 0, this.width, this.height );

		this.depthBuffer = source.depthBuffer;
		this.stencilBuffer = source.stencilBuffer;
		this.depthTexture = source.depthTexture;

		this.texture.length = 0;

		for ( let i = 0, il = source.texture.length; i < il; i ++ ) {

			this.texture[ i ] = source.texture[ i ].clone();

		}

		return this;

	}

}

WebGLMultipleRenderTargets.prototype.isWebGLMultipleRenderTargets = true;

class Quaternion {

	constructor( x = 0, y = 0, z = 0, w = 1 ) {

		this._x = x;
		this._y = y;
		this._z = z;
		this._w = w;

	}

	static slerp( qa, qb, qm, t ) {

		console.warn( 'THREE.Quaternion: Static .slerp() has been deprecated. Use qm.slerpQuaternions( qa, qb, t ) instead.' );
		return qm.slerpQuaternions( qa, qb, t );

	}

	static slerpFlat( dst, dstOffset, src0, srcOffset0, src1, srcOffset1, t ) {

		// fuzz-free, array-based Quaternion SLERP operation

		let x0 = src0[ srcOffset0 + 0 ],
			y0 = src0[ srcOffset0 + 1 ],
			z0 = src0[ srcOffset0 + 2 ],
			w0 = src0[ srcOffset0 + 3 ];

		const x1 = src1[ srcOffset1 + 0 ],
			y1 = src1[ srcOffset1 + 1 ],
			z1 = src1[ srcOffset1 + 2 ],
			w1 = src1[ srcOffset1 + 3 ];

		if ( t === 0 ) {

			dst[ dstOffset + 0 ] = x0;
			dst[ dstOffset + 1 ] = y0;
			dst[ dstOffset + 2 ] = z0;
			dst[ dstOffset + 3 ] = w0;
			return;

		}

		if ( t === 1 ) {

			dst[ dstOffset + 0 ] = x1;
			dst[ dstOffset + 1 ] = y1;
			dst[ dstOffset + 2 ] = z1;
			dst[ dstOffset + 3 ] = w1;
			return;

		}

		if ( w0 !== w1 || x0 !== x1 || y0 !== y1 || z0 !== z1 ) {

			let s = 1 - t;
			const cos = x0 * x1 + y0 * y1 + z0 * z1 + w0 * w1,
				dir = ( cos >= 0 ? 1 : - 1 ),
				sqrSin = 1 - cos * cos;

			// Skip the Slerp for tiny steps to avoid numeric problems:
			if ( sqrSin > Number.EPSILON ) {

				const sin = Math.sqrt( sqrSin ),
					len = Math.atan2( sin, cos * dir );

				s = Math.sin( s * len ) / sin;
				t = Math.sin( t * len ) / sin;

			}

			const tDir = t * dir;

			x0 = x0 * s + x1 * tDir;
			y0 = y0 * s + y1 * tDir;
			z0 = z0 * s + z1 * tDir;
			w0 = w0 * s + w1 * tDir;

			// Normalize in case we just did a lerp:
			if ( s === 1 - t ) {

				const f = 1 / Math.sqrt( x0 * x0 + y0 * y0 + z0 * z0 + w0 * w0 );

				x0 *= f;
				y0 *= f;
				z0 *= f;
				w0 *= f;

			}

		}

		dst[ dstOffset ] = x0;
		dst[ dstOffset + 1 ] = y0;
		dst[ dstOffset + 2 ] = z0;
		dst[ dstOffset + 3 ] = w0;

	}

	static multiplyQuaternionsFlat( dst, dstOffset, src0, srcOffset0, src1, srcOffset1 ) {

		const x0 = src0[ srcOffset0 ];
		const y0 = src0[ srcOffset0 + 1 ];
		const z0 = src0[ srcOffset0 + 2 ];
		const w0 = src0[ srcOffset0 + 3 ];

		const x1 = src1[ srcOffset1 ];
		const y1 = src1[ srcOffset1 + 1 ];
		const z1 = src1[ srcOffset1 + 2 ];
		const w1 = src1[ srcOffset1 + 3 ];

		dst[ dstOffset ] = x0 * w1 + w0 * x1 + y0 * z1 - z0 * y1;
		dst[ dstOffset + 1 ] = y0 * w1 + w0 * y1 + z0 * x1 - x0 * z1;
		dst[ dstOffset + 2 ] = z0 * w1 + w0 * z1 + x0 * y1 - y0 * x1;
		dst[ dstOffset + 3 ] = w0 * w1 - x0 * x1 - y0 * y1 - z0 * z1;

		return dst;

	}

	get x() {

		return this._x;

	}

	set x( value ) {

		this._x = value;
		this._onChangeCallback();

	}

	get y() {

		return this._y;

	}

	set y( value ) {

		this._y = value;
		this._onChangeCallback();

	}

	get z() {

		return this._z;

	}

	set z( value ) {

		this._z = value;
		this._onChangeCallback();

	}

	get w() {

		return this._w;

	}

	set w( value ) {

		this._w = value;
		this._onChangeCallback();

	}

	set( x, y, z, w ) {

		this._x = x;
		this._y = y;
		this._z = z;
		this._w = w;

		this._onChangeCallback();

		return this;

	}

	clone() {

		return new this.constructor( this._x, this._y, this._z, this._w );

	}

	copy( quaternion ) {

		this._x = quaternion.x;
		this._y = quaternion.y;
		this._z = quaternion.z;
		this._w = quaternion.w;

		this._onChangeCallback();

		return this;

	}

	setFromEuler( euler, update ) {

		if ( ! ( euler && euler.isEuler ) ) {

			throw new Error( 'THREE.Quaternion: .setFromEuler() now expects an Euler rotation rather than a Vector3 and order.' );

		}

		const x = euler._x, y = euler._y, z = euler._z, order = euler._order;

		// http://www.mathworks.com/matlabcentral/fileexchange/
		// 	20696-function-to-convert-between-dcm-euler-angles-quaternions-and-euler-vectors/
		//	content/SpinCalc.m

		const cos = Math.cos;
		const sin = Math.sin;

		const c1 = cos( x / 2 );
		const c2 = cos( y / 2 );
		const c3 = cos( z / 2 );

		const s1 = sin( x / 2 );
		const s2 = sin( y / 2 );
		const s3 = sin( z / 2 );

		switch ( order ) {

			case 'XYZ':
				this._x = s1 * c2 * c3 + c1 * s2 * s3;
				this._y = c1 * s2 * c3 - s1 * c2 * s3;
				this._z = c1 * c2 * s3 + s1 * s2 * c3;
				this._w = c1 * c2 * c3 - s1 * s2 * s3;
				break;

			case 'YXZ':
				this._x = s1 * c2 * c3 + c1 * s2 * s3;
				this._y = c1 * s2 * c3 - s1 * c2 * s3;
				this._z = c1 * c2 * s3 - s1 * s2 * c3;
				this._w = c1 * c2 * c3 + s1 * s2 * s3;
				break;

			case 'ZXY':
				this._x = s1 * c2 * c3 - c1 * s2 * s3;
				this._y = c1 * s2 * c3 + s1 * c2 * s3;
				this._z = c1 * c2 * s3 + s1 * s2 * c3;
				this._w = c1 * c2 * c3 - s1 * s2 * s3;
				break;

			case 'ZYX':
				this._x = s1 * c2 * c3 - c1 * s2 * s3;
				this._y = c1 * s2 * c3 + s1 * c2 * s3;
				this._z = c1 * c2 * s3 - s1 * s2 * c3;
				this._w = c1 * c2 * c3 + s1 * s2 * s3;
				break;

			case 'YZX':
				this._x = s1 * c2 * c3 + c1 * s2 * s3;
				this._y = c1 * s2 * c3 + s1 * c2 * s3;
				this._z = c1 * c2 * s3 - s1 * s2 * c3;
				this._w = c1 * c2 * c3 - s1 * s2 * s3;
				break;

			case 'XZY':
				this._x = s1 * c2 * c3 - c1 * s2 * s3;
				this._y = c1 * s2 * c3 - s1 * c2 * s3;
				this._z = c1 * c2 * s3 + s1 * s2 * c3;
				this._w = c1 * c2 * c3 + s1 * s2 * s3;
				break;

			default:
				console.warn( 'THREE.Quaternion: .setFromEuler() encountered an unknown order: ' + order );

		}

		if ( update !== false ) this._onChangeCallback();

		return this;

	}

	setFromAxisAngle( axis, angle ) {

		// http://www.euclideanspace.com/maths/geometry/rotations/conversions/angleToQuaternion/index.htm

		// assumes axis is normalized

		const halfAngle = angle / 2, s = Math.sin( halfAngle );

		this._x = axis.x * s;
		this._y = axis.y * s;
		this._z = axis.z * s;
		this._w = Math.cos( halfAngle );

		this._onChangeCallback();

		return this;

	}

	setFromRotationMatrix( m ) {

		// http://www.euclideanspace.com/maths/geometry/rotations/conversions/matrixToQuaternion/index.htm

		// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)

		const te = m.elements,

			m11 = te[ 0 ], m12 = te[ 4 ], m13 = te[ 8 ],
			m21 = te[ 1 ], m22 = te[ 5 ], m23 = te[ 9 ],
			m31 = te[ 2 ], m32 = te[ 6 ], m33 = te[ 10 ],

			trace = m11 + m22 + m33;

		if ( trace > 0 ) {

			const s = 0.5 / Math.sqrt( trace + 1.0 );

			this._w = 0.25 / s;
			this._x = ( m32 - m23 ) * s;
			this._y = ( m13 - m31 ) * s;
			this._z = ( m21 - m12 ) * s;

		} else if ( m11 > m22 && m11 > m33 ) {

			const s = 2.0 * Math.sqrt( 1.0 + m11 - m22 - m33 );

			this._w = ( m32 - m23 ) / s;
			this._x = 0.25 * s;
			this._y = ( m12 + m21 ) / s;
			this._z = ( m13 + m31 ) / s;

		} else if ( m22 > m33 ) {

			const s = 2.0 * Math.sqrt( 1.0 + m22 - m11 - m33 );

			this._w = ( m13 - m31 ) / s;
			this._x = ( m12 + m21 ) / s;
			this._y = 0.25 * s;
			this._z = ( m23 + m32 ) / s;

		} else {

			const s = 2.0 * Math.sqrt( 1.0 + m33 - m11 - m22 );

			this._w = ( m21 - m12 ) / s;
			this._x = ( m13 + m31 ) / s;
			this._y = ( m23 + m32 ) / s;
			this._z = 0.25 * s;

		}

		this._onChangeCallback();

		return this;

	}

	setFromUnitVectors( vFrom, vTo ) {

		// assumes direction vectors vFrom and vTo are normalized

		let r = vFrom.dot( vTo ) + 1;

		if ( r < Number.EPSILON ) {

			// vFrom and vTo point in opposite directions

			r = 0;

			if ( Math.abs( vFrom.x ) > Math.abs( vFrom.z ) ) {

				this._x = - vFrom.y;
				this._y = vFrom.x;
				this._z = 0;
				this._w = r;

			} else {

				this._x = 0;
				this._y = - vFrom.z;
				this._z = vFrom.y;
				this._w = r;

			}

		} else {

			// crossVectors( vFrom, vTo ); // inlined to avoid cyclic dependency on Vector3

			this._x = vFrom.y * vTo.z - vFrom.z * vTo.y;
			this._y = vFrom.z * vTo.x - vFrom.x * vTo.z;
			this._z = vFrom.x * vTo.y - vFrom.y * vTo.x;
			this._w = r;

		}

		return this.normalize();

	}

	angleTo( q ) {

		return 2 * Math.acos( Math.abs( clamp$1( this.dot( q ), - 1, 1 ) ) );

	}

	rotateTowards( q, step ) {

		const angle = this.angleTo( q );

		if ( angle === 0 ) return this;

		const t = Math.min( 1, step / angle );

		this.slerp( q, t );

		return this;

	}

	identity() {

		return this.set( 0, 0, 0, 1 );

	}

	invert() {

		// quaternion is assumed to have unit length

		return this.conjugate();

	}

	conjugate() {

		this._x *= - 1;
		this._y *= - 1;
		this._z *= - 1;

		this._onChangeCallback();

		return this;

	}

	dot( v ) {

		return this._x * v._x + this._y * v._y + this._z * v._z + this._w * v._w;

	}

	lengthSq() {

		return this._x * this._x + this._y * this._y + this._z * this._z + this._w * this._w;

	}

	length() {

		return Math.sqrt( this._x * this._x + this._y * this._y + this._z * this._z + this._w * this._w );

	}

	normalize() {

		let l = this.length();

		if ( l === 0 ) {

			this._x = 0;
			this._y = 0;
			this._z = 0;
			this._w = 1;

		} else {

			l = 1 / l;

			this._x = this._x * l;
			this._y = this._y * l;
			this._z = this._z * l;
			this._w = this._w * l;

		}

		this._onChangeCallback();

		return this;

	}

	multiply( q, p ) {

		if ( p !== undefined ) {

			console.warn( 'THREE.Quaternion: .multiply() now only accepts one argument. Use .multiplyQuaternions( a, b ) instead.' );
			return this.multiplyQuaternions( q, p );

		}

		return this.multiplyQuaternions( this, q );

	}

	premultiply( q ) {

		return this.multiplyQuaternions( q, this );

	}

	multiplyQuaternions( a, b ) {

		// from http://www.euclideanspace.com/maths/algebra/realNormedAlgebra/quaternions/code/index.htm

		const qax = a._x, qay = a._y, qaz = a._z, qaw = a._w;
		const qbx = b._x, qby = b._y, qbz = b._z, qbw = b._w;

		this._x = qax * qbw + qaw * qbx + qay * qbz - qaz * qby;
		this._y = qay * qbw + qaw * qby + qaz * qbx - qax * qbz;
		this._z = qaz * qbw + qaw * qbz + qax * qby - qay * qbx;
		this._w = qaw * qbw - qax * qbx - qay * qby - qaz * qbz;

		this._onChangeCallback();

		return this;

	}

	slerp( qb, t ) {

		if ( t === 0 ) return this;
		if ( t === 1 ) return this.copy( qb );

		const x = this._x, y = this._y, z = this._z, w = this._w;

		// http://www.euclideanspace.com/maths/algebra/realNormedAlgebra/quaternions/slerp/

		let cosHalfTheta = w * qb._w + x * qb._x + y * qb._y + z * qb._z;

		if ( cosHalfTheta < 0 ) {

			this._w = - qb._w;
			this._x = - qb._x;
			this._y = - qb._y;
			this._z = - qb._z;

			cosHalfTheta = - cosHalfTheta;

		} else {

			this.copy( qb );

		}

		if ( cosHalfTheta >= 1.0 ) {

			this._w = w;
			this._x = x;
			this._y = y;
			this._z = z;

			return this;

		}

		const sqrSinHalfTheta = 1.0 - cosHalfTheta * cosHalfTheta;

		if ( sqrSinHalfTheta <= Number.EPSILON ) {

			const s = 1 - t;
			this._w = s * w + t * this._w;
			this._x = s * x + t * this._x;
			this._y = s * y + t * this._y;
			this._z = s * z + t * this._z;

			this.normalize();
			this._onChangeCallback();

			return this;

		}

		const sinHalfTheta = Math.sqrt( sqrSinHalfTheta );
		const halfTheta = Math.atan2( sinHalfTheta, cosHalfTheta );
		const ratioA = Math.sin( ( 1 - t ) * halfTheta ) / sinHalfTheta,
			ratioB = Math.sin( t * halfTheta ) / sinHalfTheta;

		this._w = ( w * ratioA + this._w * ratioB );
		this._x = ( x * ratioA + this._x * ratioB );
		this._y = ( y * ratioA + this._y * ratioB );
		this._z = ( z * ratioA + this._z * ratioB );

		this._onChangeCallback();

		return this;

	}

	slerpQuaternions( qa, qb, t ) {

		return this.copy( qa ).slerp( qb, t );

	}

	random() {

		// Derived from http://planning.cs.uiuc.edu/node198.html
		// Note, this source uses w, x, y, z ordering,
		// so we swap the order below.

		const u1 = Math.random();
		const sqrt1u1 = Math.sqrt( 1 - u1 );
		const sqrtu1 = Math.sqrt( u1 );

		const u2 = 2 * Math.PI * Math.random();

		const u3 = 2 * Math.PI * Math.random();

		return this.set(
			sqrt1u1 * Math.cos( u2 ),
			sqrtu1 * Math.sin( u3 ),
			sqrtu1 * Math.cos( u3 ),
			sqrt1u1 * Math.sin( u2 ),
		);

	}

	equals( quaternion ) {

		return ( quaternion._x === this._x ) && ( quaternion._y === this._y ) && ( quaternion._z === this._z ) && ( quaternion._w === this._w );

	}

	fromArray( array, offset = 0 ) {

		this._x = array[ offset ];
		this._y = array[ offset + 1 ];
		this._z = array[ offset + 2 ];
		this._w = array[ offset + 3 ];

		this._onChangeCallback();

		return this;

	}

	toArray( array = [], offset = 0 ) {

		array[ offset ] = this._x;
		array[ offset + 1 ] = this._y;
		array[ offset + 2 ] = this._z;
		array[ offset + 3 ] = this._w;

		return array;

	}

	fromBufferAttribute( attribute, index ) {

		this._x = attribute.getX( index );
		this._y = attribute.getY( index );
		this._z = attribute.getZ( index );
		this._w = attribute.getW( index );

		return this;

	}

	_onChange( callback ) {

		this._onChangeCallback = callback;

		return this;

	}

	_onChangeCallback() {}

}

Quaternion.prototype.isQuaternion = true;

class Vector3 {

	constructor( x = 0, y = 0, z = 0 ) {

		this.x = x;
		this.y = y;
		this.z = z;

	}

	set( x, y, z ) {

		if ( z === undefined ) z = this.z; // sprite.scale.set(x,y)

		this.x = x;
		this.y = y;
		this.z = z;

		return this;

	}

	setScalar( scalar ) {

		this.x = scalar;
		this.y = scalar;
		this.z = scalar;

		return this;

	}

	setX( x ) {

		this.x = x;

		return this;

	}

	setY( y ) {

		this.y = y;

		return this;

	}

	setZ( z ) {

		this.z = z;

		return this;

	}

	setComponent( index, value ) {

		switch ( index ) {

			case 0: this.x = value; break;
			case 1: this.y = value; break;
			case 2: this.z = value; break;
			default: throw new Error( 'index is out of range: ' + index );

		}

		return this;

	}

	getComponent( index ) {

		switch ( index ) {

			case 0: return this.x;
			case 1: return this.y;
			case 2: return this.z;
			default: throw new Error( 'index is out of range: ' + index );

		}

	}

	clone() {

		return new this.constructor( this.x, this.y, this.z );

	}

	copy( v ) {

		this.x = v.x;
		this.y = v.y;
		this.z = v.z;

		return this;

	}

	add( v, w ) {

		if ( w !== undefined ) {

			console.warn( 'THREE.Vector3: .add() now only accepts one argument. Use .addVectors( a, b ) instead.' );
			return this.addVectors( v, w );

		}

		this.x += v.x;
		this.y += v.y;
		this.z += v.z;

		return this;

	}

	addScalar( s ) {

		this.x += s;
		this.y += s;
		this.z += s;

		return this;

	}

	addVectors( a, b ) {

		this.x = a.x + b.x;
		this.y = a.y + b.y;
		this.z = a.z + b.z;

		return this;

	}

	addScaledVector( v, s ) {

		this.x += v.x * s;
		this.y += v.y * s;
		this.z += v.z * s;

		return this;

	}

	sub( v, w ) {

		if ( w !== undefined ) {

			console.warn( 'THREE.Vector3: .sub() now only accepts one argument. Use .subVectors( a, b ) instead.' );
			return this.subVectors( v, w );

		}

		this.x -= v.x;
		this.y -= v.y;
		this.z -= v.z;

		return this;

	}

	subScalar( s ) {

		this.x -= s;
		this.y -= s;
		this.z -= s;

		return this;

	}

	subVectors( a, b ) {

		this.x = a.x - b.x;
		this.y = a.y - b.y;
		this.z = a.z - b.z;

		return this;

	}

	multiply( v, w ) {

		if ( w !== undefined ) {

			console.warn( 'THREE.Vector3: .multiply() now only accepts one argument. Use .multiplyVectors( a, b ) instead.' );
			return this.multiplyVectors( v, w );

		}

		this.x *= v.x;
		this.y *= v.y;
		this.z *= v.z;

		return this;

	}

	multiplyScalar( scalar ) {

		this.x *= scalar;
		this.y *= scalar;
		this.z *= scalar;

		return this;

	}

	multiplyVectors( a, b ) {

		this.x = a.x * b.x;
		this.y = a.y * b.y;
		this.z = a.z * b.z;

		return this;

	}

	applyEuler( euler ) {

		if ( ! ( euler && euler.isEuler ) ) {

			console.error( 'THREE.Vector3: .applyEuler() now expects an Euler rotation rather than a Vector3 and order.' );

		}

		return this.applyQuaternion( _quaternion$4.setFromEuler( euler ) );

	}

	applyAxisAngle( axis, angle ) {

		return this.applyQuaternion( _quaternion$4.setFromAxisAngle( axis, angle ) );

	}

	applyMatrix3( m ) {

		const x = this.x, y = this.y, z = this.z;
		const e = m.elements;

		this.x = e[ 0 ] * x + e[ 3 ] * y + e[ 6 ] * z;
		this.y = e[ 1 ] * x + e[ 4 ] * y + e[ 7 ] * z;
		this.z = e[ 2 ] * x + e[ 5 ] * y + e[ 8 ] * z;

		return this;

	}

	applyNormalMatrix( m ) {

		return this.applyMatrix3( m ).normalize();

	}

	applyMatrix4( m ) {

		const x = this.x, y = this.y, z = this.z;
		const e = m.elements;

		const w = 1 / ( e[ 3 ] * x + e[ 7 ] * y + e[ 11 ] * z + e[ 15 ] );

		this.x = ( e[ 0 ] * x + e[ 4 ] * y + e[ 8 ] * z + e[ 12 ] ) * w;
		this.y = ( e[ 1 ] * x + e[ 5 ] * y + e[ 9 ] * z + e[ 13 ] ) * w;
		this.z = ( e[ 2 ] * x + e[ 6 ] * y + e[ 10 ] * z + e[ 14 ] ) * w;

		return this;

	}

	applyQuaternion( q ) {

		const x = this.x, y = this.y, z = this.z;
		const qx = q.x, qy = q.y, qz = q.z, qw = q.w;

		// calculate quat * vector

		const ix = qw * x + qy * z - qz * y;
		const iy = qw * y + qz * x - qx * z;
		const iz = qw * z + qx * y - qy * x;
		const iw = - qx * x - qy * y - qz * z;

		// calculate result * inverse quat

		this.x = ix * qw + iw * - qx + iy * - qz - iz * - qy;
		this.y = iy * qw + iw * - qy + iz * - qx - ix * - qz;
		this.z = iz * qw + iw * - qz + ix * - qy - iy * - qx;

		return this;

	}

	project( camera ) {

		return this.applyMatrix4( camera.matrixWorldInverse ).applyMatrix4( camera.projectionMatrix );

	}

	unproject( camera ) {

		return this.applyMatrix4( camera.projectionMatrixInverse ).applyMatrix4( camera.matrixWorld );

	}

	transformDirection( m ) {

		// input: THREE.Matrix4 affine matrix
		// vector interpreted as a direction

		const x = this.x, y = this.y, z = this.z;
		const e = m.elements;

		this.x = e[ 0 ] * x + e[ 4 ] * y + e[ 8 ] * z;
		this.y = e[ 1 ] * x + e[ 5 ] * y + e[ 9 ] * z;
		this.z = e[ 2 ] * x + e[ 6 ] * y + e[ 10 ] * z;

		return this.normalize();

	}

	divide( v ) {

		this.x /= v.x;
		this.y /= v.y;
		this.z /= v.z;

		return this;

	}

	divideScalar( scalar ) {

		return this.multiplyScalar( 1 / scalar );

	}

	min( v ) {

		this.x = Math.min( this.x, v.x );
		this.y = Math.min( this.y, v.y );
		this.z = Math.min( this.z, v.z );

		return this;

	}

	max( v ) {

		this.x = Math.max( this.x, v.x );
		this.y = Math.max( this.y, v.y );
		this.z = Math.max( this.z, v.z );

		return this;

	}

	clamp( min, max ) {

		// assumes min < max, componentwise

		this.x = Math.max( min.x, Math.min( max.x, this.x ) );
		this.y = Math.max( min.y, Math.min( max.y, this.y ) );
		this.z = Math.max( min.z, Math.min( max.z, this.z ) );

		return this;

	}

	clampScalar( minVal, maxVal ) {

		this.x = Math.max( minVal, Math.min( maxVal, this.x ) );
		this.y = Math.max( minVal, Math.min( maxVal, this.y ) );
		this.z = Math.max( minVal, Math.min( maxVal, this.z ) );

		return this;

	}

	clampLength( min, max ) {

		const length = this.length();

		return this.divideScalar( length || 1 ).multiplyScalar( Math.max( min, Math.min( max, length ) ) );

	}

	floor() {

		this.x = Math.floor( this.x );
		this.y = Math.floor( this.y );
		this.z = Math.floor( this.z );

		return this;

	}

	ceil() {

		this.x = Math.ceil( this.x );
		this.y = Math.ceil( this.y );
		this.z = Math.ceil( this.z );

		return this;

	}

	round() {

		this.x = Math.round( this.x );
		this.y = Math.round( this.y );
		this.z = Math.round( this.z );

		return this;

	}

	roundToZero() {

		this.x = ( this.x < 0 ) ? Math.ceil( this.x ) : Math.floor( this.x );
		this.y = ( this.y < 0 ) ? Math.ceil( this.y ) : Math.floor( this.y );
		this.z = ( this.z < 0 ) ? Math.ceil( this.z ) : Math.floor( this.z );

		return this;

	}

	negate() {

		this.x = - this.x;
		this.y = - this.y;
		this.z = - this.z;

		return this;

	}

	dot( v ) {

		return this.x * v.x + this.y * v.y + this.z * v.z;

	}

	// TODO lengthSquared?

	lengthSq() {

		return this.x * this.x + this.y * this.y + this.z * this.z;

	}

	length() {

		return Math.sqrt( this.x * this.x + this.y * this.y + this.z * this.z );

	}

	manhattanLength() {

		return Math.abs( this.x ) + Math.abs( this.y ) + Math.abs( this.z );

	}

	normalize() {

		return this.divideScalar( this.length() || 1 );

	}

	setLength( length ) {

		return this.normalize().multiplyScalar( length );

	}

	lerp( v, alpha ) {

		this.x += ( v.x - this.x ) * alpha;
		this.y += ( v.y - this.y ) * alpha;
		this.z += ( v.z - this.z ) * alpha;

		return this;

	}

	lerpVectors( v1, v2, alpha ) {

		this.x = v1.x + ( v2.x - v1.x ) * alpha;
		this.y = v1.y + ( v2.y - v1.y ) * alpha;
		this.z = v1.z + ( v2.z - v1.z ) * alpha;

		return this;

	}

	cross( v, w ) {

		if ( w !== undefined ) {

			console.warn( 'THREE.Vector3: .cross() now only accepts one argument. Use .crossVectors( a, b ) instead.' );
			return this.crossVectors( v, w );

		}

		return this.crossVectors( this, v );

	}

	crossVectors( a, b ) {

		const ax = a.x, ay = a.y, az = a.z;
		const bx = b.x, by = b.y, bz = b.z;

		this.x = ay * bz - az * by;
		this.y = az * bx - ax * bz;
		this.z = ax * by - ay * bx;

		return this;

	}

	projectOnVector( v ) {

		const denominator = v.lengthSq();

		if ( denominator === 0 ) return this.set( 0, 0, 0 );

		const scalar = v.dot( this ) / denominator;

		return this.copy( v ).multiplyScalar( scalar );

	}

	projectOnPlane( planeNormal ) {

		_vector$c.copy( this ).projectOnVector( planeNormal );

		return this.sub( _vector$c );

	}

	reflect( normal ) {

		// reflect incident vector off plane orthogonal to normal
		// normal is assumed to have unit length

		return this.sub( _vector$c.copy( normal ).multiplyScalar( 2 * this.dot( normal ) ) );

	}

	angleTo( v ) {

		const denominator = Math.sqrt( this.lengthSq() * v.lengthSq() );

		if ( denominator === 0 ) return Math.PI / 2;

		const theta = this.dot( v ) / denominator;

		// clamp, to handle numerical problems

		return Math.acos( clamp$1( theta, - 1, 1 ) );

	}

	distanceTo( v ) {

		return Math.sqrt( this.distanceToSquared( v ) );

	}

	distanceToSquared( v ) {

		const dx = this.x - v.x, dy = this.y - v.y, dz = this.z - v.z;

		return dx * dx + dy * dy + dz * dz;

	}

	manhattanDistanceTo( v ) {

		return Math.abs( this.x - v.x ) + Math.abs( this.y - v.y ) + Math.abs( this.z - v.z );

	}

	setFromSpherical( s ) {

		return this.setFromSphericalCoords( s.radius, s.phi, s.theta );

	}

	setFromSphericalCoords( radius, phi, theta ) {

		const sinPhiRadius = Math.sin( phi ) * radius;

		this.x = sinPhiRadius * Math.sin( theta );
		this.y = Math.cos( phi ) * radius;
		this.z = sinPhiRadius * Math.cos( theta );

		return this;

	}

	setFromCylindrical( c ) {

		return this.setFromCylindricalCoords( c.radius, c.theta, c.y );

	}

	setFromCylindricalCoords( radius, theta, y ) {

		this.x = radius * Math.sin( theta );
		this.y = y;
		this.z = radius * Math.cos( theta );

		return this;

	}

	setFromMatrixPosition( m ) {

		const e = m.elements;

		this.x = e[ 12 ];
		this.y = e[ 13 ];
		this.z = e[ 14 ];

		return this;

	}

	setFromMatrixScale( m ) {

		const sx = this.setFromMatrixColumn( m, 0 ).length();
		const sy = this.setFromMatrixColumn( m, 1 ).length();
		const sz = this.setFromMatrixColumn( m, 2 ).length();

		this.x = sx;
		this.y = sy;
		this.z = sz;

		return this;

	}

	setFromMatrixColumn( m, index ) {

		return this.fromArray( m.elements, index * 4 );

	}

	setFromMatrix3Column( m, index ) {

		return this.fromArray( m.elements, index * 3 );

	}

	setFromEuler( e ) {

		this.x = e._x;
		this.y = e._y;
		this.z = e._z;

		return this;

	}

	equals( v ) {

		return ( ( v.x === this.x ) && ( v.y === this.y ) && ( v.z === this.z ) );

	}

	fromArray( array, offset = 0 ) {

		this.x = array[ offset ];
		this.y = array[ offset + 1 ];
		this.z = array[ offset + 2 ];

		return this;

	}

	toArray( array = [], offset = 0 ) {

		array[ offset ] = this.x;
		array[ offset + 1 ] = this.y;
		array[ offset + 2 ] = this.z;

		return array;

	}

	fromBufferAttribute( attribute, index, offset ) {

		if ( offset !== undefined ) {

			console.warn( 'THREE.Vector3: offset has been removed from .fromBufferAttribute().' );

		}

		this.x = attribute.getX( index );
		this.y = attribute.getY( index );
		this.z = attribute.getZ( index );

		return this;

	}

	random() {

		this.x = Math.random();
		this.y = Math.random();
		this.z = Math.random();

		return this;

	}

	randomDirection() {

		// Derived from https://mathworld.wolfram.com/SpherePointPicking.html

		const u = ( Math.random() - 0.5 ) * 2;
		const t = Math.random() * Math.PI * 2;
		const f = Math.sqrt( 1 - u ** 2 );

		this.x = f * Math.cos( t );
		this.y = f * Math.sin( t );
		this.z = u;

		return this;

	}

	*[ Symbol.iterator ]() {

		yield this.x;
		yield this.y;
		yield this.z;

	}

}

Vector3.prototype.isVector3 = true;

const _vector$c = /*@__PURE__*/ new Vector3();
const _quaternion$4 = /*@__PURE__*/ new Quaternion();

class Box3 {

	constructor( min = new Vector3( + Infinity, + Infinity, + Infinity ), max = new Vector3( - Infinity, - Infinity, - Infinity ) ) {

		this.min = min;
		this.max = max;

	}

	set( min, max ) {

		this.min.copy( min );
		this.max.copy( max );

		return this;

	}

	setFromArray( array ) {

		let minX = + Infinity;
		let minY = + Infinity;
		let minZ = + Infinity;

		let maxX = - Infinity;
		let maxY = - Infinity;
		let maxZ = - Infinity;

		for ( let i = 0, l = array.length; i < l; i += 3 ) {

			const x = array[ i ];
			const y = array[ i + 1 ];
			const z = array[ i + 2 ];

			if ( x < minX ) minX = x;
			if ( y < minY ) minY = y;
			if ( z < minZ ) minZ = z;

			if ( x > maxX ) maxX = x;
			if ( y > maxY ) maxY = y;
			if ( z > maxZ ) maxZ = z;

		}

		this.min.set( minX, minY, minZ );
		this.max.set( maxX, maxY, maxZ );

		return this;

	}

	setFromBufferAttribute( attribute ) {

		let minX = + Infinity;
		let minY = + Infinity;
		let minZ = + Infinity;

		let maxX = - Infinity;
		let maxY = - Infinity;
		let maxZ = - Infinity;

		for ( let i = 0, l = attribute.count; i < l; i ++ ) {

			const x = attribute.getX( i );
			const y = attribute.getY( i );
			const z = attribute.getZ( i );

			if ( x < minX ) minX = x;
			if ( y < minY ) minY = y;
			if ( z < minZ ) minZ = z;

			if ( x > maxX ) maxX = x;
			if ( y > maxY ) maxY = y;
			if ( z > maxZ ) maxZ = z;

		}

		this.min.set( minX, minY, minZ );
		this.max.set( maxX, maxY, maxZ );

		return this;

	}

	setFromPoints( points ) {

		this.makeEmpty();

		for ( let i = 0, il = points.length; i < il; i ++ ) {

			this.expandByPoint( points[ i ] );

		}

		return this;

	}

	setFromCenterAndSize( center, size ) {

		const halfSize = _vector$b.copy( size ).multiplyScalar( 0.5 );

		this.min.copy( center ).sub( halfSize );
		this.max.copy( center ).add( halfSize );

		return this;

	}

	setFromObject( object, precise = false ) {

		this.makeEmpty();

		return this.expandByObject( object, precise );

	}

	clone() {

		return new this.constructor().copy( this );

	}

	copy( box ) {

		this.min.copy( box.min );
		this.max.copy( box.max );

		return this;

	}

	makeEmpty() {

		this.min.x = this.min.y = this.min.z = + Infinity;
		this.max.x = this.max.y = this.max.z = - Infinity;

		return this;

	}

	isEmpty() {

		// this is a more robust check for empty than ( volume <= 0 ) because volume can get positive with two negative axes

		return ( this.max.x < this.min.x ) || ( this.max.y < this.min.y ) || ( this.max.z < this.min.z );

	}

	getCenter( target ) {

		return this.isEmpty() ? target.set( 0, 0, 0 ) : target.addVectors( this.min, this.max ).multiplyScalar( 0.5 );

	}

	getSize( target ) {

		return this.isEmpty() ? target.set( 0, 0, 0 ) : target.subVectors( this.max, this.min );

	}

	expandByPoint( point ) {

		this.min.min( point );
		this.max.max( point );

		return this;

	}

	expandByVector( vector ) {

		this.min.sub( vector );
		this.max.add( vector );

		return this;

	}

	expandByScalar( scalar ) {

		this.min.addScalar( - scalar );
		this.max.addScalar( scalar );

		return this;

	}

	expandByObject( object, precise = false ) {

		// Computes the world-axis-aligned bounding box of an object (including its children),
		// accounting for both the object's, and children's, world transforms

		object.updateWorldMatrix( false, false );

		const geometry = object.geometry;

		if ( geometry !== undefined ) {

			if ( precise && geometry.attributes != undefined && geometry.attributes.position !== undefined ) {

				const position = geometry.attributes.position;
				for ( let i = 0, l = position.count; i < l; i ++ ) {

					_vector$b.fromBufferAttribute( position, i ).applyMatrix4( object.matrixWorld );
					this.expandByPoint( _vector$b );

				}

			} else {

				if ( geometry.boundingBox === null ) {

					geometry.computeBoundingBox();

				}

				_box$3.copy( geometry.boundingBox );
				_box$3.applyMatrix4( object.matrixWorld );

				this.union( _box$3 );

			}

		}

		const children = object.children;

		for ( let i = 0, l = children.length; i < l; i ++ ) {

			this.expandByObject( children[ i ], precise );

		}

		return this;

	}

	containsPoint( point ) {

		return point.x < this.min.x || point.x > this.max.x ||
			point.y < this.min.y || point.y > this.max.y ||
			point.z < this.min.z || point.z > this.max.z ? false : true;

	}

	containsBox( box ) {

		return this.min.x <= box.min.x && box.max.x <= this.max.x &&
			this.min.y <= box.min.y && box.max.y <= this.max.y &&
			this.min.z <= box.min.z && box.max.z <= this.max.z;

	}

	getParameter( point, target ) {

		// This can potentially have a divide by zero if the box
		// has a size dimension of 0.

		return target.set(
			( point.x - this.min.x ) / ( this.max.x - this.min.x ),
			( point.y - this.min.y ) / ( this.max.y - this.min.y ),
			( point.z - this.min.z ) / ( this.max.z - this.min.z )
		);

	}

	intersectsBox( box ) {

		// using 6 splitting planes to rule out intersections.
		return box.max.x < this.min.x || box.min.x > this.max.x ||
			box.max.y < this.min.y || box.min.y > this.max.y ||
			box.max.z < this.min.z || box.min.z > this.max.z ? false : true;

	}

	intersectsSphere( sphere ) {

		// Find the point on the AABB closest to the sphere center.
		this.clampPoint( sphere.center, _vector$b );

		// If that point is inside the sphere, the AABB and sphere intersect.
		return _vector$b.distanceToSquared( sphere.center ) <= ( sphere.radius * sphere.radius );

	}

	intersectsPlane( plane ) {

		// We compute the minimum and maximum dot product values. If those values
		// are on the same side (back or front) of the plane, then there is no intersection.

		let min, max;

		if ( plane.normal.x > 0 ) {

			min = plane.normal.x * this.min.x;
			max = plane.normal.x * this.max.x;

		} else {

			min = plane.normal.x * this.max.x;
			max = plane.normal.x * this.min.x;

		}

		if ( plane.normal.y > 0 ) {

			min += plane.normal.y * this.min.y;
			max += plane.normal.y * this.max.y;

		} else {

			min += plane.normal.y * this.max.y;
			max += plane.normal.y * this.min.y;

		}

		if ( plane.normal.z > 0 ) {

			min += plane.normal.z * this.min.z;
			max += plane.normal.z * this.max.z;

		} else {

			min += plane.normal.z * this.max.z;
			max += plane.normal.z * this.min.z;

		}

		return ( min <= - plane.constant && max >= - plane.constant );

	}

	intersectsTriangle( triangle ) {

		if ( this.isEmpty() ) {

			return false;

		}

		// compute box center and extents
		this.getCenter( _center );
		_extents.subVectors( this.max, _center );

		// translate triangle to aabb origin
		_v0$2.subVectors( triangle.a, _center );
		_v1$7.subVectors( triangle.b, _center );
		_v2$3.subVectors( triangle.c, _center );

		// compute edge vectors for triangle
		_f0.subVectors( _v1$7, _v0$2 );
		_f1.subVectors( _v2$3, _v1$7 );
		_f2.subVectors( _v0$2, _v2$3 );

		// test against axes that are given by cross product combinations of the edges of the triangle and the edges of the aabb
		// make an axis testing of each of the 3 sides of the aabb against each of the 3 sides of the triangle = 9 axis of separation
		// axis_ij = u_i x f_j (u0, u1, u2 = face normals of aabb = x,y,z axes vectors since aabb is axis aligned)
		let axes = [
			0, - _f0.z, _f0.y, 0, - _f1.z, _f1.y, 0, - _f2.z, _f2.y,
			_f0.z, 0, - _f0.x, _f1.z, 0, - _f1.x, _f2.z, 0, - _f2.x,
			- _f0.y, _f0.x, 0, - _f1.y, _f1.x, 0, - _f2.y, _f2.x, 0
		];
		if ( ! satForAxes( axes, _v0$2, _v1$7, _v2$3, _extents ) ) {

			return false;

		}

		// test 3 face normals from the aabb
		axes = [ 1, 0, 0, 0, 1, 0, 0, 0, 1 ];
		if ( ! satForAxes( axes, _v0$2, _v1$7, _v2$3, _extents ) ) {

			return false;

		}

		// finally testing the face normal of the triangle
		// use already existing triangle edge vectors here
		_triangleNormal.crossVectors( _f0, _f1 );
		axes = [ _triangleNormal.x, _triangleNormal.y, _triangleNormal.z ];

		return satForAxes( axes, _v0$2, _v1$7, _v2$3, _extents );

	}

	clampPoint( point, target ) {

		return target.copy( point ).clamp( this.min, this.max );

	}

	distanceToPoint( point ) {

		const clampedPoint = _vector$b.copy( point ).clamp( this.min, this.max );

		return clampedPoint.sub( point ).length();

	}

	getBoundingSphere( target ) {

		this.getCenter( target.center );

		target.radius = this.getSize( _vector$b ).length() * 0.5;

		return target;

	}

	intersect( box ) {

		this.min.max( box.min );
		this.max.min( box.max );

		// ensure that if there is no overlap, the result is fully empty, not slightly empty with non-inf/+inf values that will cause subsequence intersects to erroneously return valid values.
		if ( this.isEmpty() ) this.makeEmpty();

		return this;

	}

	union( box ) {

		this.min.min( box.min );
		this.max.max( box.max );

		return this;

	}

	applyMatrix4( matrix ) {

		// transform of empty box is an empty box.
		if ( this.isEmpty() ) return this;

		// NOTE: I am using a binary pattern to specify all 2^3 combinations below
		_points[ 0 ].set( this.min.x, this.min.y, this.min.z ).applyMatrix4( matrix ); // 000
		_points[ 1 ].set( this.min.x, this.min.y, this.max.z ).applyMatrix4( matrix ); // 001
		_points[ 2 ].set( this.min.x, this.max.y, this.min.z ).applyMatrix4( matrix ); // 010
		_points[ 3 ].set( this.min.x, this.max.y, this.max.z ).applyMatrix4( matrix ); // 011
		_points[ 4 ].set( this.max.x, this.min.y, this.min.z ).applyMatrix4( matrix ); // 100
		_points[ 5 ].set( this.max.x, this.min.y, this.max.z ).applyMatrix4( matrix ); // 101
		_points[ 6 ].set( this.max.x, this.max.y, this.min.z ).applyMatrix4( matrix ); // 110
		_points[ 7 ].set( this.max.x, this.max.y, this.max.z ).applyMatrix4( matrix ); // 111

		this.setFromPoints( _points );

		return this;

	}

	translate( offset ) {

		this.min.add( offset );
		this.max.add( offset );

		return this;

	}

	equals( box ) {

		return box.min.equals( this.min ) && box.max.equals( this.max );

	}

}

Box3.prototype.isBox3 = true;

const _points = [
	/*@__PURE__*/ new Vector3(),
	/*@__PURE__*/ new Vector3(),
	/*@__PURE__*/ new Vector3(),
	/*@__PURE__*/ new Vector3(),
	/*@__PURE__*/ new Vector3(),
	/*@__PURE__*/ new Vector3(),
	/*@__PURE__*/ new Vector3(),
	/*@__PURE__*/ new Vector3()
];

const _vector$b = /*@__PURE__*/ new Vector3();

const _box$3 = /*@__PURE__*/ new Box3();

// triangle centered vertices

const _v0$2 = /*@__PURE__*/ new Vector3();
const _v1$7 = /*@__PURE__*/ new Vector3();
const _v2$3 = /*@__PURE__*/ new Vector3();

// triangle edge vectors

const _f0 = /*@__PURE__*/ new Vector3();
const _f1 = /*@__PURE__*/ new Vector3();
const _f2 = /*@__PURE__*/ new Vector3();

const _center = /*@__PURE__*/ new Vector3();
const _extents = /*@__PURE__*/ new Vector3();
const _triangleNormal = /*@__PURE__*/ new Vector3();
const _testAxis = /*@__PURE__*/ new Vector3();

function satForAxes( axes, v0, v1, v2, extents ) {

	for ( let i = 0, j = axes.length - 3; i <= j; i += 3 ) {

		_testAxis.fromArray( axes, i );
		// project the aabb onto the seperating axis
		const r = extents.x * Math.abs( _testAxis.x ) + extents.y * Math.abs( _testAxis.y ) + extents.z * Math.abs( _testAxis.z );
		// project all 3 vertices of the triangle onto the seperating axis
		const p0 = v0.dot( _testAxis );
		const p1 = v1.dot( _testAxis );
		const p2 = v2.dot( _testAxis );
		// actual test, basically see if either of the most extreme of the triangle points intersects r
		if ( Math.max( - Math.max( p0, p1, p2 ), Math.min( p0, p1, p2 ) ) > r ) {

			// points of the projected triangle are outside the projected half-length of the aabb
			// the axis is seperating and we can exit
			return false;

		}

	}

	return true;

}

const _box$2 = /*@__PURE__*/ new Box3();
const _v1$6 = /*@__PURE__*/ new Vector3();
const _toFarthestPoint = /*@__PURE__*/ new Vector3();
const _toPoint = /*@__PURE__*/ new Vector3();

class Sphere {

	constructor( center = new Vector3(), radius = - 1 ) {

		this.center = center;
		this.radius = radius;

	}

	set( center, radius ) {

		this.center.copy( center );
		this.radius = radius;

		return this;

	}

	setFromPoints( points, optionalCenter ) {

		const center = this.center;

		if ( optionalCenter !== undefined ) {

			center.copy( optionalCenter );

		} else {

			_box$2.setFromPoints( points ).getCenter( center );

		}

		let maxRadiusSq = 0;

		for ( let i = 0, il = points.length; i < il; i ++ ) {

			maxRadiusSq = Math.max( maxRadiusSq, center.distanceToSquared( points[ i ] ) );

		}

		this.radius = Math.sqrt( maxRadiusSq );

		return this;

	}

	copy( sphere ) {

		this.center.copy( sphere.center );
		this.radius = sphere.radius;

		return this;

	}

	isEmpty() {

		return ( this.radius < 0 );

	}

	makeEmpty() {

		this.center.set( 0, 0, 0 );
		this.radius = - 1;

		return this;

	}

	containsPoint( point ) {

		return ( point.distanceToSquared( this.center ) <= ( this.radius * this.radius ) );

	}

	distanceToPoint( point ) {

		return ( point.distanceTo( this.center ) - this.radius );

	}

	intersectsSphere( sphere ) {

		const radiusSum = this.radius + sphere.radius;

		return sphere.center.distanceToSquared( this.center ) <= ( radiusSum * radiusSum );

	}

	intersectsBox( box ) {

		return box.intersectsSphere( this );

	}

	intersectsPlane( plane ) {

		return Math.abs( plane.distanceToPoint( this.center ) ) <= this.radius;

	}

	clampPoint( point, target ) {

		const deltaLengthSq = this.center.distanceToSquared( point );

		target.copy( point );

		if ( deltaLengthSq > ( this.radius * this.radius ) ) {

			target.sub( this.center ).normalize();
			target.multiplyScalar( this.radius ).add( this.center );

		}

		return target;

	}

	getBoundingBox( target ) {

		if ( this.isEmpty() ) {

			// Empty sphere produces empty bounding box
			target.makeEmpty();
			return target;

		}

		target.set( this.center, this.center );
		target.expandByScalar( this.radius );

		return target;

	}

	applyMatrix4( matrix ) {

		this.center.applyMatrix4( matrix );
		this.radius = this.radius * matrix.getMaxScaleOnAxis();

		return this;

	}

	translate( offset ) {

		this.center.add( offset );

		return this;

	}

	expandByPoint( point ) {

		// from https://github.com/juj/MathGeoLib/blob/2940b99b99cfe575dd45103ef20f4019dee15b54/src/Geometry/Sphere.cpp#L649-L671

		_toPoint.subVectors( point, this.center );

		const lengthSq = _toPoint.lengthSq();

		if ( lengthSq > ( this.radius * this.radius ) ) {

			const length = Math.sqrt( lengthSq );
			const missingRadiusHalf = ( length - this.radius ) * 0.5;

			// Nudge this sphere towards the target point. Add half the missing distance to radius,
			// and the other half to position. This gives a tighter enclosure, instead of if
			// the whole missing distance were just added to radius.

			this.center.add( _toPoint.multiplyScalar( missingRadiusHalf / length ) );
			this.radius += missingRadiusHalf;

		}

		return this;

	}

	union( sphere ) {

		// from https://github.com/juj/MathGeoLib/blob/2940b99b99cfe575dd45103ef20f4019dee15b54/src/Geometry/Sphere.cpp#L759-L769

		// To enclose another sphere into this sphere, we only need to enclose two points:
		// 1) Enclose the farthest point on the other sphere into this sphere.
		// 2) Enclose the opposite point of the farthest point into this sphere.

		 if ( this.center.equals( sphere.center ) === true ) {

			 _toFarthestPoint.set( 0, 0, 1 ).multiplyScalar( sphere.radius );


		} else {

			_toFarthestPoint.subVectors( sphere.center, this.center ).normalize().multiplyScalar( sphere.radius );

		}

		this.expandByPoint( _v1$6.copy( sphere.center ).add( _toFarthestPoint ) );
		this.expandByPoint( _v1$6.copy( sphere.center ).sub( _toFarthestPoint ) );

		return this;

	}

	equals( sphere ) {

		return sphere.center.equals( this.center ) && ( sphere.radius === this.radius );

	}

	clone() {

		return new this.constructor().copy( this );

	}

}

const _vector$a = /*@__PURE__*/ new Vector3();
const _segCenter = /*@__PURE__*/ new Vector3();
const _segDir = /*@__PURE__*/ new Vector3();
const _diff = /*@__PURE__*/ new Vector3();

const _edge1 = /*@__PURE__*/ new Vector3();
const _edge2 = /*@__PURE__*/ new Vector3();
const _normal$1 = /*@__PURE__*/ new Vector3();

class Ray {

	constructor( origin = new Vector3(), direction = new Vector3( 0, 0, - 1 ) ) {

		this.origin = origin;
		this.direction = direction;

	}

	set( origin, direction ) {

		this.origin.copy( origin );
		this.direction.copy( direction );

		return this;

	}

	copy( ray ) {

		this.origin.copy( ray.origin );
		this.direction.copy( ray.direction );

		return this;

	}

	at( t, target ) {

		return target.copy( this.direction ).multiplyScalar( t ).add( this.origin );

	}

	lookAt( v ) {

		this.direction.copy( v ).sub( this.origin ).normalize();

		return this;

	}

	recast( t ) {

		this.origin.copy( this.at( t, _vector$a ) );

		return this;

	}

	closestPointToPoint( point, target ) {

		target.subVectors( point, this.origin );

		const directionDistance = target.dot( this.direction );

		if ( directionDistance < 0 ) {

			return target.copy( this.origin );

		}

		return target.copy( this.direction ).multiplyScalar( directionDistance ).add( this.origin );

	}

	distanceToPoint( point ) {

		return Math.sqrt( this.distanceSqToPoint( point ) );

	}

	distanceSqToPoint( point ) {

		const directionDistance = _vector$a.subVectors( point, this.origin ).dot( this.direction );

		// point behind the ray

		if ( directionDistance < 0 ) {

			return this.origin.distanceToSquared( point );

		}

		_vector$a.copy( this.direction ).multiplyScalar( directionDistance ).add( this.origin );

		return _vector$a.distanceToSquared( point );

	}

	distanceSqToSegment( v0, v1, optionalPointOnRay, optionalPointOnSegment ) {

		// from https://github.com/pmjoniak/GeometricTools/blob/master/GTEngine/Include/Mathematics/GteDistRaySegment.h
		// It returns the min distance between the ray and the segment
		// defined by v0 and v1
		// It can also set two optional targets :
		// - The closest point on the ray
		// - The closest point on the segment

		_segCenter.copy( v0 ).add( v1 ).multiplyScalar( 0.5 );
		_segDir.copy( v1 ).sub( v0 ).normalize();
		_diff.copy( this.origin ).sub( _segCenter );

		const segExtent = v0.distanceTo( v1 ) * 0.5;
		const a01 = - this.direction.dot( _segDir );
		const b0 = _diff.dot( this.direction );
		const b1 = - _diff.dot( _segDir );
		const c = _diff.lengthSq();
		const det = Math.abs( 1 - a01 * a01 );
		let s0, s1, sqrDist, extDet;

		if ( det > 0 ) {

			// The ray and segment are not parallel.

			s0 = a01 * b1 - b0;
			s1 = a01 * b0 - b1;
			extDet = segExtent * det;

			if ( s0 >= 0 ) {

				if ( s1 >= - extDet ) {

					if ( s1 <= extDet ) {

						// region 0
						// Minimum at interior points of ray and segment.

						const invDet = 1 / det;
						s0 *= invDet;
						s1 *= invDet;
						sqrDist = s0 * ( s0 + a01 * s1 + 2 * b0 ) + s1 * ( a01 * s0 + s1 + 2 * b1 ) + c;

					} else {

						// region 1

						s1 = segExtent;
						s0 = Math.max( 0, - ( a01 * s1 + b0 ) );
						sqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;

					}

				} else {

					// region 5

					s1 = - segExtent;
					s0 = Math.max( 0, - ( a01 * s1 + b0 ) );
					sqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;

				}

			} else {

				if ( s1 <= - extDet ) {

					// region 4

					s0 = Math.max( 0, - ( - a01 * segExtent + b0 ) );
					s1 = ( s0 > 0 ) ? - segExtent : Math.min( Math.max( - segExtent, - b1 ), segExtent );
					sqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;

				} else if ( s1 <= extDet ) {

					// region 3

					s0 = 0;
					s1 = Math.min( Math.max( - segExtent, - b1 ), segExtent );
					sqrDist = s1 * ( s1 + 2 * b1 ) + c;

				} else {

					// region 2

					s0 = Math.max( 0, - ( a01 * segExtent + b0 ) );
					s1 = ( s0 > 0 ) ? segExtent : Math.min( Math.max( - segExtent, - b1 ), segExtent );
					sqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;

				}

			}

		} else {

			// Ray and segment are parallel.

			s1 = ( a01 > 0 ) ? - segExtent : segExtent;
			s0 = Math.max( 0, - ( a01 * s1 + b0 ) );
			sqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;

		}

		if ( optionalPointOnRay ) {

			optionalPointOnRay.copy( this.direction ).multiplyScalar( s0 ).add( this.origin );

		}

		if ( optionalPointOnSegment ) {

			optionalPointOnSegment.copy( _segDir ).multiplyScalar( s1 ).add( _segCenter );

		}

		return sqrDist;

	}

	intersectSphere( sphere, target ) {

		_vector$a.subVectors( sphere.center, this.origin );
		const tca = _vector$a.dot( this.direction );
		const d2 = _vector$a.dot( _vector$a ) - tca * tca;
		const radius2 = sphere.radius * sphere.radius;

		if ( d2 > radius2 ) return null;

		const thc = Math.sqrt( radius2 - d2 );

		// t0 = first intersect point - entrance on front of sphere
		const t0 = tca - thc;

		// t1 = second intersect point - exit point on back of sphere
		const t1 = tca + thc;

		// test to see if both t0 and t1 are behind the ray - if so, return null
		if ( t0 < 0 && t1 < 0 ) return null;

		// test to see if t0 is behind the ray:
		// if it is, the ray is inside the sphere, so return the second exit point scaled by t1,
		// in order to always return an intersect point that is in front of the ray.
		if ( t0 < 0 ) return this.at( t1, target );

		// else t0 is in front of the ray, so return the first collision point scaled by t0
		return this.at( t0, target );

	}

	intersectsSphere( sphere ) {

		return this.distanceSqToPoint( sphere.center ) <= ( sphere.radius * sphere.radius );

	}

	distanceToPlane( plane ) {

		const denominator = plane.normal.dot( this.direction );

		if ( denominator === 0 ) {

			// line is coplanar, return origin
			if ( plane.distanceToPoint( this.origin ) === 0 ) {

				return 0;

			}

			// Null is preferable to undefined since undefined means.... it is undefined

			return null;

		}

		const t = - ( this.origin.dot( plane.normal ) + plane.constant ) / denominator;

		// Return if the ray never intersects the plane

		return t >= 0 ? t : null;

	}

	intersectPlane( plane, target ) {

		const t = this.distanceToPlane( plane );

		if ( t === null ) {

			return null;

		}

		return this.at( t, target );

	}

	intersectsPlane( plane ) {

		// check if the ray lies on the plane first

		const distToPoint = plane.distanceToPoint( this.origin );

		if ( distToPoint === 0 ) {

			return true;

		}

		const denominator = plane.normal.dot( this.direction );

		if ( denominator * distToPoint < 0 ) {

			return true;

		}

		// ray origin is behind the plane (and is pointing behind it)

		return false;

	}

	intersectBox( box, target ) {

		let tmin, tmax, tymin, tymax, tzmin, tzmax;

		const invdirx = 1 / this.direction.x,
			invdiry = 1 / this.direction.y,
			invdirz = 1 / this.direction.z;

		const origin = this.origin;

		if ( invdirx >= 0 ) {

			tmin = ( box.min.x - origin.x ) * invdirx;
			tmax = ( box.max.x - origin.x ) * invdirx;

		} else {

			tmin = ( box.max.x - origin.x ) * invdirx;
			tmax = ( box.min.x - origin.x ) * invdirx;

		}

		if ( invdiry >= 0 ) {

			tymin = ( box.min.y - origin.y ) * invdiry;
			tymax = ( box.max.y - origin.y ) * invdiry;

		} else {

			tymin = ( box.max.y - origin.y ) * invdiry;
			tymax = ( box.min.y - origin.y ) * invdiry;

		}

		if ( ( tmin > tymax ) || ( tymin > tmax ) ) return null;

		// These lines also handle the case where tmin or tmax is NaN
		// (result of 0 * Infinity). x !== x returns true if x is NaN

		if ( tymin > tmin || tmin !== tmin ) tmin = tymin;

		if ( tymax < tmax || tmax !== tmax ) tmax = tymax;

		if ( invdirz >= 0 ) {

			tzmin = ( box.min.z - origin.z ) * invdirz;
			tzmax = ( box.max.z - origin.z ) * invdirz;

		} else {

			tzmin = ( box.max.z - origin.z ) * invdirz;
			tzmax = ( box.min.z - origin.z ) * invdirz;

		}

		if ( ( tmin > tzmax ) || ( tzmin > tmax ) ) return null;

		if ( tzmin > tmin || tmin !== tmin ) tmin = tzmin;

		if ( tzmax < tmax || tmax !== tmax ) tmax = tzmax;

		//return point closest to the ray (positive side)

		if ( tmax < 0 ) return null;

		return this.at( tmin >= 0 ? tmin : tmax, target );

	}

	intersectsBox( box ) {

		return this.intersectBox( box, _vector$a ) !== null;

	}

	intersectTriangle( a, b, c, backfaceCulling, target ) {

		// Compute the offset origin, edges, and normal.

		// from https://github.com/pmjoniak/GeometricTools/blob/master/GTEngine/Include/Mathematics/GteIntrRay3Triangle3.h

		_edge1.subVectors( b, a );
		_edge2.subVectors( c, a );
		_normal$1.crossVectors( _edge1, _edge2 );

		// Solve Q + t*D = b1*E1 + b2*E2 (Q = kDiff, D = ray direction,
		// E1 = kEdge1, E2 = kEdge2, N = Cross(E1,E2)) by
		//   |Dot(D,N)|*b1 = sign(Dot(D,N))*Dot(D,Cross(Q,E2))
		//   |Dot(D,N)|*b2 = sign(Dot(D,N))*Dot(D,Cross(E1,Q))
		//   |Dot(D,N)|*t = -sign(Dot(D,N))*Dot(Q,N)
		let DdN = this.direction.dot( _normal$1 );
		let sign;

		if ( DdN > 0 ) {

			if ( backfaceCulling ) return null;
			sign = 1;

		} else if ( DdN < 0 ) {

			sign = - 1;
			DdN = - DdN;

		} else {

			return null;

		}

		_diff.subVectors( this.origin, a );
		const DdQxE2 = sign * this.direction.dot( _edge2.crossVectors( _diff, _edge2 ) );

		// b1 < 0, no intersection
		if ( DdQxE2 < 0 ) {

			return null;

		}

		const DdE1xQ = sign * this.direction.dot( _edge1.cross( _diff ) );

		// b2 < 0, no intersection
		if ( DdE1xQ < 0 ) {

			return null;

		}

		// b1+b2 > 1, no intersection
		if ( DdQxE2 + DdE1xQ > DdN ) {

			return null;

		}

		// Line intersects triangle, check if ray does.
		const QdN = - sign * _diff.dot( _normal$1 );

		// t < 0, no intersection
		if ( QdN < 0 ) {

			return null;

		}

		// Ray intersects triangle.
		return this.at( QdN / DdN, target );

	}

	applyMatrix4( matrix4 ) {

		this.origin.applyMatrix4( matrix4 );
		this.direction.transformDirection( matrix4 );

		return this;

	}

	equals( ray ) {

		return ray.origin.equals( this.origin ) && ray.direction.equals( this.direction );

	}

	clone() {

		return new this.constructor().copy( this );

	}

}

class Matrix4 {

	constructor() {

		this.elements = [

			1, 0, 0, 0,
			0, 1, 0, 0,
			0, 0, 1, 0,
			0, 0, 0, 1

		];

		if ( arguments.length > 0 ) {

			console.error( 'THREE.Matrix4: the constructor no longer reads arguments. use .set() instead.' );

		}

	}

	set( n11, n12, n13, n14, n21, n22, n23, n24, n31, n32, n33, n34, n41, n42, n43, n44 ) {

		const te = this.elements;

		te[ 0 ] = n11; te[ 4 ] = n12; te[ 8 ] = n13; te[ 12 ] = n14;
		te[ 1 ] = n21; te[ 5 ] = n22; te[ 9 ] = n23; te[ 13 ] = n24;
		te[ 2 ] = n31; te[ 6 ] = n32; te[ 10 ] = n33; te[ 14 ] = n34;
		te[ 3 ] = n41; te[ 7 ] = n42; te[ 11 ] = n43; te[ 15 ] = n44;

		return this;

	}

	identity() {

		this.set(

			1, 0, 0, 0,
			0, 1, 0, 0,
			0, 0, 1, 0,
			0, 0, 0, 1

		);

		return this;

	}

	clone() {

		return new Matrix4().fromArray( this.elements );

	}

	copy( m ) {

		const te = this.elements;
		const me = m.elements;

		te[ 0 ] = me[ 0 ]; te[ 1 ] = me[ 1 ]; te[ 2 ] = me[ 2 ]; te[ 3 ] = me[ 3 ];
		te[ 4 ] = me[ 4 ]; te[ 5 ] = me[ 5 ]; te[ 6 ] = me[ 6 ]; te[ 7 ] = me[ 7 ];
		te[ 8 ] = me[ 8 ]; te[ 9 ] = me[ 9 ]; te[ 10 ] = me[ 10 ]; te[ 11 ] = me[ 11 ];
		te[ 12 ] = me[ 12 ]; te[ 13 ] = me[ 13 ]; te[ 14 ] = me[ 14 ]; te[ 15 ] = me[ 15 ];

		return this;

	}

	copyPosition( m ) {

		const te = this.elements, me = m.elements;

		te[ 12 ] = me[ 12 ];
		te[ 13 ] = me[ 13 ];
		te[ 14 ] = me[ 14 ];

		return this;

	}

	setFromMatrix3( m ) {

		const me = m.elements;

		this.set(

			me[ 0 ], me[ 3 ], me[ 6 ], 0,
			me[ 1 ], me[ 4 ], me[ 7 ], 0,
			me[ 2 ], me[ 5 ], me[ 8 ], 0,
			0, 0, 0, 1

		);

		return this;

	}

	extractBasis( xAxis, yAxis, zAxis ) {

		xAxis.setFromMatrixColumn( this, 0 );
		yAxis.setFromMatrixColumn( this, 1 );
		zAxis.setFromMatrixColumn( this, 2 );

		return this;

	}

	makeBasis( xAxis, yAxis, zAxis ) {

		this.set(
			xAxis.x, yAxis.x, zAxis.x, 0,
			xAxis.y, yAxis.y, zAxis.y, 0,
			xAxis.z, yAxis.z, zAxis.z, 0,
			0, 0, 0, 1
		);

		return this;

	}

	extractRotation( m ) {

		// this method does not support reflection matrices

		const te = this.elements;
		const me = m.elements;

		const scaleX = 1 / _v1$5.setFromMatrixColumn( m, 0 ).length();
		const scaleY = 1 / _v1$5.setFromMatrixColumn( m, 1 ).length();
		const scaleZ = 1 / _v1$5.setFromMatrixColumn( m, 2 ).length();

		te[ 0 ] = me[ 0 ] * scaleX;
		te[ 1 ] = me[ 1 ] * scaleX;
		te[ 2 ] = me[ 2 ] * scaleX;
		te[ 3 ] = 0;

		te[ 4 ] = me[ 4 ] * scaleY;
		te[ 5 ] = me[ 5 ] * scaleY;
		te[ 6 ] = me[ 6 ] * scaleY;
		te[ 7 ] = 0;

		te[ 8 ] = me[ 8 ] * scaleZ;
		te[ 9 ] = me[ 9 ] * scaleZ;
		te[ 10 ] = me[ 10 ] * scaleZ;
		te[ 11 ] = 0;

		te[ 12 ] = 0;
		te[ 13 ] = 0;
		te[ 14 ] = 0;
		te[ 15 ] = 1;

		return this;

	}

	makeRotationFromEuler( euler ) {

		if ( ! ( euler && euler.isEuler ) ) {

			console.error( 'THREE.Matrix4: .makeRotationFromEuler() now expects a Euler rotation rather than a Vector3 and order.' );

		}

		const te = this.elements;

		const x = euler.x, y = euler.y, z = euler.z;
		const a = Math.cos( x ), b = Math.sin( x );
		const c = Math.cos( y ), d = Math.sin( y );
		const e = Math.cos( z ), f = Math.sin( z );

		if ( euler.order === 'XYZ' ) {

			const ae = a * e, af = a * f, be = b * e, bf = b * f;

			te[ 0 ] = c * e;
			te[ 4 ] = - c * f;
			te[ 8 ] = d;

			te[ 1 ] = af + be * d;
			te[ 5 ] = ae - bf * d;
			te[ 9 ] = - b * c;

			te[ 2 ] = bf - ae * d;
			te[ 6 ] = be + af * d;
			te[ 10 ] = a * c;

		} else if ( euler.order === 'YXZ' ) {

			const ce = c * e, cf = c * f, de = d * e, df = d * f;

			te[ 0 ] = ce + df * b;
			te[ 4 ] = de * b - cf;
			te[ 8 ] = a * d;

			te[ 1 ] = a * f;
			te[ 5 ] = a * e;
			te[ 9 ] = - b;

			te[ 2 ] = cf * b - de;
			te[ 6 ] = df + ce * b;
			te[ 10 ] = a * c;

		} else if ( euler.order === 'ZXY' ) {

			const ce = c * e, cf = c * f, de = d * e, df = d * f;

			te[ 0 ] = ce - df * b;
			te[ 4 ] = - a * f;
			te[ 8 ] = de + cf * b;

			te[ 1 ] = cf + de * b;
			te[ 5 ] = a * e;
			te[ 9 ] = df - ce * b;

			te[ 2 ] = - a * d;
			te[ 6 ] = b;
			te[ 10 ] = a * c;

		} else if ( euler.order === 'ZYX' ) {

			const ae = a * e, af = a * f, be = b * e, bf = b * f;

			te[ 0 ] = c * e;
			te[ 4 ] = be * d - af;
			te[ 8 ] = ae * d + bf;

			te[ 1 ] = c * f;
			te[ 5 ] = bf * d + ae;
			te[ 9 ] = af * d - be;

			te[ 2 ] = - d;
			te[ 6 ] = b * c;
			te[ 10 ] = a * c;

		} else if ( euler.order === 'YZX' ) {

			const ac = a * c, ad = a * d, bc = b * c, bd = b * d;

			te[ 0 ] = c * e;
			te[ 4 ] = bd - ac * f;
			te[ 8 ] = bc * f + ad;

			te[ 1 ] = f;
			te[ 5 ] = a * e;
			te[ 9 ] = - b * e;

			te[ 2 ] = - d * e;
			te[ 6 ] = ad * f + bc;
			te[ 10 ] = ac - bd * f;

		} else if ( euler.order === 'XZY' ) {

			const ac = a * c, ad = a * d, bc = b * c, bd = b * d;

			te[ 0 ] = c * e;
			te[ 4 ] = - f;
			te[ 8 ] = d * e;

			te[ 1 ] = ac * f + bd;
			te[ 5 ] = a * e;
			te[ 9 ] = ad * f - bc;

			te[ 2 ] = bc * f - ad;
			te[ 6 ] = b * e;
			te[ 10 ] = bd * f + ac;

		}

		// bottom row
		te[ 3 ] = 0;
		te[ 7 ] = 0;
		te[ 11 ] = 0;

		// last column
		te[ 12 ] = 0;
		te[ 13 ] = 0;
		te[ 14 ] = 0;
		te[ 15 ] = 1;

		return this;

	}

	makeRotationFromQuaternion( q ) {

		return this.compose( _zero, q, _one );

	}

	lookAt( eye, target, up ) {

		const te = this.elements;

		_z.subVectors( eye, target );

		if ( _z.lengthSq() === 0 ) {

			// eye and target are in the same position

			_z.z = 1;

		}

		_z.normalize();
		_x.crossVectors( up, _z );

		if ( _x.lengthSq() === 0 ) {

			// up and z are parallel

			if ( Math.abs( up.z ) === 1 ) {

				_z.x += 0.0001;

			} else {

				_z.z += 0.0001;

			}

			_z.normalize();
			_x.crossVectors( up, _z );

		}

		_x.normalize();
		_y.crossVectors( _z, _x );

		te[ 0 ] = _x.x; te[ 4 ] = _y.x; te[ 8 ] = _z.x;
		te[ 1 ] = _x.y; te[ 5 ] = _y.y; te[ 9 ] = _z.y;
		te[ 2 ] = _x.z; te[ 6 ] = _y.z; te[ 10 ] = _z.z;

		return this;

	}

	multiply( m, n ) {

		if ( n !== undefined ) {

			console.warn( 'THREE.Matrix4: .multiply() now only accepts one argument. Use .multiplyMatrices( a, b ) instead.' );
			return this.multiplyMatrices( m, n );

		}

		return this.multiplyMatrices( this, m );

	}

	premultiply( m ) {

		return this.multiplyMatrices( m, this );

	}

	multiplyMatrices( a, b ) {

		const ae = a.elements;
		const be = b.elements;
		const te = this.elements;

		const a11 = ae[ 0 ], a12 = ae[ 4 ], a13 = ae[ 8 ], a14 = ae[ 12 ];
		const a21 = ae[ 1 ], a22 = ae[ 5 ], a23 = ae[ 9 ], a24 = ae[ 13 ];
		const a31 = ae[ 2 ], a32 = ae[ 6 ], a33 = ae[ 10 ], a34 = ae[ 14 ];
		const a41 = ae[ 3 ], a42 = ae[ 7 ], a43 = ae[ 11 ], a44 = ae[ 15 ];

		const b11 = be[ 0 ], b12 = be[ 4 ], b13 = be[ 8 ], b14 = be[ 12 ];
		const b21 = be[ 1 ], b22 = be[ 5 ], b23 = be[ 9 ], b24 = be[ 13 ];
		const b31 = be[ 2 ], b32 = be[ 6 ], b33 = be[ 10 ], b34 = be[ 14 ];
		const b41 = be[ 3 ], b42 = be[ 7 ], b43 = be[ 11 ], b44 = be[ 15 ];

		te[ 0 ] = a11 * b11 + a12 * b21 + a13 * b31 + a14 * b41;
		te[ 4 ] = a11 * b12 + a12 * b22 + a13 * b32 + a14 * b42;
		te[ 8 ] = a11 * b13 + a12 * b23 + a13 * b33 + a14 * b43;
		te[ 12 ] = a11 * b14 + a12 * b24 + a13 * b34 + a14 * b44;

		te[ 1 ] = a21 * b11 + a22 * b21 + a23 * b31 + a24 * b41;
		te[ 5 ] = a21 * b12 + a22 * b22 + a23 * b32 + a24 * b42;
		te[ 9 ] = a21 * b13 + a22 * b23 + a23 * b33 + a24 * b43;
		te[ 13 ] = a21 * b14 + a22 * b24 + a23 * b34 + a24 * b44;

		te[ 2 ] = a31 * b11 + a32 * b21 + a33 * b31 + a34 * b41;
		te[ 6 ] = a31 * b12 + a32 * b22 + a33 * b32 + a34 * b42;
		te[ 10 ] = a31 * b13 + a32 * b23 + a33 * b33 + a34 * b43;
		te[ 14 ] = a31 * b14 + a32 * b24 + a33 * b34 + a34 * b44;

		te[ 3 ] = a41 * b11 + a42 * b21 + a43 * b31 + a44 * b41;
		te[ 7 ] = a41 * b12 + a42 * b22 + a43 * b32 + a44 * b42;
		te[ 11 ] = a41 * b13 + a42 * b23 + a43 * b33 + a44 * b43;
		te[ 15 ] = a41 * b14 + a42 * b24 + a43 * b34 + a44 * b44;

		return this;

	}

	multiplyScalar( s ) {

		const te = this.elements;

		te[ 0 ] *= s; te[ 4 ] *= s; te[ 8 ] *= s; te[ 12 ] *= s;
		te[ 1 ] *= s; te[ 5 ] *= s; te[ 9 ] *= s; te[ 13 ] *= s;
		te[ 2 ] *= s; te[ 6 ] *= s; te[ 10 ] *= s; te[ 14 ] *= s;
		te[ 3 ] *= s; te[ 7 ] *= s; te[ 11 ] *= s; te[ 15 ] *= s;

		return this;

	}

	determinant() {

		const te = this.elements;

		const n11 = te[ 0 ], n12 = te[ 4 ], n13 = te[ 8 ], n14 = te[ 12 ];
		const n21 = te[ 1 ], n22 = te[ 5 ], n23 = te[ 9 ], n24 = te[ 13 ];
		const n31 = te[ 2 ], n32 = te[ 6 ], n33 = te[ 10 ], n34 = te[ 14 ];
		const n41 = te[ 3 ], n42 = te[ 7 ], n43 = te[ 11 ], n44 = te[ 15 ];

		//TODO: make this more efficient
		//( based on http://www.euclideanspace.com/maths/algebra/matrix/functions/inverse/fourD/index.htm )

		return (
			n41 * (
				+ n14 * n23 * n32
				 - n13 * n24 * n32
				 - n14 * n22 * n33
				 + n12 * n24 * n33
				 + n13 * n22 * n34
				 - n12 * n23 * n34
			) +
			n42 * (
				+ n11 * n23 * n34
				 - n11 * n24 * n33
				 + n14 * n21 * n33
				 - n13 * n21 * n34
				 + n13 * n24 * n31
				 - n14 * n23 * n31
			) +
			n43 * (
				+ n11 * n24 * n32
				 - n11 * n22 * n34
				 - n14 * n21 * n32
				 + n12 * n21 * n34
				 + n14 * n22 * n31
				 - n12 * n24 * n31
			) +
			n44 * (
				- n13 * n22 * n31
				 - n11 * n23 * n32
				 + n11 * n22 * n33
				 + n13 * n21 * n32
				 - n12 * n21 * n33
				 + n12 * n23 * n31
			)

		);

	}

	transpose() {

		const te = this.elements;
		let tmp;

		tmp = te[ 1 ]; te[ 1 ] = te[ 4 ]; te[ 4 ] = tmp;
		tmp = te[ 2 ]; te[ 2 ] = te[ 8 ]; te[ 8 ] = tmp;
		tmp = te[ 6 ]; te[ 6 ] = te[ 9 ]; te[ 9 ] = tmp;

		tmp = te[ 3 ]; te[ 3 ] = te[ 12 ]; te[ 12 ] = tmp;
		tmp = te[ 7 ]; te[ 7 ] = te[ 13 ]; te[ 13 ] = tmp;
		tmp = te[ 11 ]; te[ 11 ] = te[ 14 ]; te[ 14 ] = tmp;

		return this;

	}

	setPosition( x, y, z ) {

		const te = this.elements;

		if ( x.isVector3 ) {

			te[ 12 ] = x.x;
			te[ 13 ] = x.y;
			te[ 14 ] = x.z;

		} else {

			te[ 12 ] = x;
			te[ 13 ] = y;
			te[ 14 ] = z;

		}

		return this;

	}

	invert() {

		// based on http://www.euclideanspace.com/maths/algebra/matrix/functions/inverse/fourD/index.htm
		const te = this.elements,

			n11 = te[ 0 ], n21 = te[ 1 ], n31 = te[ 2 ], n41 = te[ 3 ],
			n12 = te[ 4 ], n22 = te[ 5 ], n32 = te[ 6 ], n42 = te[ 7 ],
			n13 = te[ 8 ], n23 = te[ 9 ], n33 = te[ 10 ], n43 = te[ 11 ],
			n14 = te[ 12 ], n24 = te[ 13 ], n34 = te[ 14 ], n44 = te[ 15 ],

			t11 = n23 * n34 * n42 - n24 * n33 * n42 + n24 * n32 * n43 - n22 * n34 * n43 - n23 * n32 * n44 + n22 * n33 * n44,
			t12 = n14 * n33 * n42 - n13 * n34 * n42 - n14 * n32 * n43 + n12 * n34 * n43 + n13 * n32 * n44 - n12 * n33 * n44,
			t13 = n13 * n24 * n42 - n14 * n23 * n42 + n14 * n22 * n43 - n12 * n24 * n43 - n13 * n22 * n44 + n12 * n23 * n44,
			t14 = n14 * n23 * n32 - n13 * n24 * n32 - n14 * n22 * n33 + n12 * n24 * n33 + n13 * n22 * n34 - n12 * n23 * n34;

		const det = n11 * t11 + n21 * t12 + n31 * t13 + n41 * t14;

		if ( det === 0 ) return this.set( 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 );

		const detInv = 1 / det;

		te[ 0 ] = t11 * detInv;
		te[ 1 ] = ( n24 * n33 * n41 - n23 * n34 * n41 - n24 * n31 * n43 + n21 * n34 * n43 + n23 * n31 * n44 - n21 * n33 * n44 ) * detInv;
		te[ 2 ] = ( n22 * n34 * n41 - n24 * n32 * n41 + n24 * n31 * n42 - n21 * n34 * n42 - n22 * n31 * n44 + n21 * n32 * n44 ) * detInv;
		te[ 3 ] = ( n23 * n32 * n41 - n22 * n33 * n41 - n23 * n31 * n42 + n21 * n33 * n42 + n22 * n31 * n43 - n21 * n32 * n43 ) * detInv;

		te[ 4 ] = t12 * detInv;
		te[ 5 ] = ( n13 * n34 * n41 - n14 * n33 * n41 + n14 * n31 * n43 - n11 * n34 * n43 - n13 * n31 * n44 + n11 * n33 * n44 ) * detInv;
		te[ 6 ] = ( n14 * n32 * n41 - n12 * n34 * n41 - n14 * n31 * n42 + n11 * n34 * n42 + n12 * n31 * n44 - n11 * n32 * n44 ) * detInv;
		te[ 7 ] = ( n12 * n33 * n41 - n13 * n32 * n41 + n13 * n31 * n42 - n11 * n33 * n42 - n12 * n31 * n43 + n11 * n32 * n43 ) * detInv;

		te[ 8 ] = t13 * detInv;
		te[ 9 ] = ( n14 * n23 * n41 - n13 * n24 * n41 - n14 * n21 * n43 + n11 * n24 * n43 + n13 * n21 * n44 - n11 * n23 * n44 ) * detInv;
		te[ 10 ] = ( n12 * n24 * n41 - n14 * n22 * n41 + n14 * n21 * n42 - n11 * n24 * n42 - n12 * n21 * n44 + n11 * n22 * n44 ) * detInv;
		te[ 11 ] = ( n13 * n22 * n41 - n12 * n23 * n41 - n13 * n21 * n42 + n11 * n23 * n42 + n12 * n21 * n43 - n11 * n22 * n43 ) * detInv;

		te[ 12 ] = t14 * detInv;
		te[ 13 ] = ( n13 * n24 * n31 - n14 * n23 * n31 + n14 * n21 * n33 - n11 * n24 * n33 - n13 * n21 * n34 + n11 * n23 * n34 ) * detInv;
		te[ 14 ] = ( n14 * n22 * n31 - n12 * n24 * n31 - n14 * n21 * n32 + n11 * n24 * n32 + n12 * n21 * n34 - n11 * n22 * n34 ) * detInv;
		te[ 15 ] = ( n12 * n23 * n31 - n13 * n22 * n31 + n13 * n21 * n32 - n11 * n23 * n32 - n12 * n21 * n33 + n11 * n22 * n33 ) * detInv;

		return this;

	}

	scale( v ) {

		const te = this.elements;
		const x = v.x, y = v.y, z = v.z;

		te[ 0 ] *= x; te[ 4 ] *= y; te[ 8 ] *= z;
		te[ 1 ] *= x; te[ 5 ] *= y; te[ 9 ] *= z;
		te[ 2 ] *= x; te[ 6 ] *= y; te[ 10 ] *= z;
		te[ 3 ] *= x; te[ 7 ] *= y; te[ 11 ] *= z;

		return this;

	}

	getMaxScaleOnAxis() {

		const te = this.elements;

		const scaleXSq = te[ 0 ] * te[ 0 ] + te[ 1 ] * te[ 1 ] + te[ 2 ] * te[ 2 ];
		const scaleYSq = te[ 4 ] * te[ 4 ] + te[ 5 ] * te[ 5 ] + te[ 6 ] * te[ 6 ];
		const scaleZSq = te[ 8 ] * te[ 8 ] + te[ 9 ] * te[ 9 ] + te[ 10 ] * te[ 10 ];

		return Math.sqrt( Math.max( scaleXSq, scaleYSq, scaleZSq ) );

	}

	makeTranslation( x, y, z ) {

		this.set(

			1, 0, 0, x,
			0, 1, 0, y,
			0, 0, 1, z,
			0, 0, 0, 1

		);

		return this;

	}

	makeRotationX( theta ) {

		const c = Math.cos( theta ), s = Math.sin( theta );

		this.set(

			1, 0, 0, 0,
			0, c, - s, 0,
			0, s, c, 0,
			0, 0, 0, 1

		);

		return this;

	}

	makeRotationY( theta ) {

		const c = Math.cos( theta ), s = Math.sin( theta );

		this.set(

			 c, 0, s, 0,
			 0, 1, 0, 0,
			- s, 0, c, 0,
			 0, 0, 0, 1

		);

		return this;

	}

	makeRotationZ( theta ) {

		const c = Math.cos( theta ), s = Math.sin( theta );

		this.set(

			c, - s, 0, 0,
			s, c, 0, 0,
			0, 0, 1, 0,
			0, 0, 0, 1

		);

		return this;

	}

	makeRotationAxis( axis, angle ) {

		// Based on http://www.gamedev.net/reference/articles/article1199.asp

		const c = Math.cos( angle );
		const s = Math.sin( angle );
		const t = 1 - c;
		const x = axis.x, y = axis.y, z = axis.z;
		const tx = t * x, ty = t * y;

		this.set(

			tx * x + c, tx * y - s * z, tx * z + s * y, 0,
			tx * y + s * z, ty * y + c, ty * z - s * x, 0,
			tx * z - s * y, ty * z + s * x, t * z * z + c, 0,
			0, 0, 0, 1

		);

		return this;

	}

	makeScale( x, y, z ) {

		this.set(

			x, 0, 0, 0,
			0, y, 0, 0,
			0, 0, z, 0,
			0, 0, 0, 1

		);

		return this;

	}

	makeShear( xy, xz, yx, yz, zx, zy ) {

		this.set(

			1, yx, zx, 0,
			xy, 1, zy, 0,
			xz, yz, 1, 0,
			0, 0, 0, 1

		);

		return this;

	}

	compose( position, quaternion, scale ) {

		const te = this.elements;

		const x = quaternion._x, y = quaternion._y, z = quaternion._z, w = quaternion._w;
		const x2 = x + x,	y2 = y + y, z2 = z + z;
		const xx = x * x2, xy = x * y2, xz = x * z2;
		const yy = y * y2, yz = y * z2, zz = z * z2;
		const wx = w * x2, wy = w * y2, wz = w * z2;

		const sx = scale.x, sy = scale.y, sz = scale.z;

		te[ 0 ] = ( 1 - ( yy + zz ) ) * sx;
		te[ 1 ] = ( xy + wz ) * sx;
		te[ 2 ] = ( xz - wy ) * sx;
		te[ 3 ] = 0;

		te[ 4 ] = ( xy - wz ) * sy;
		te[ 5 ] = ( 1 - ( xx + zz ) ) * sy;
		te[ 6 ] = ( yz + wx ) * sy;
		te[ 7 ] = 0;

		te[ 8 ] = ( xz + wy ) * sz;
		te[ 9 ] = ( yz - wx ) * sz;
		te[ 10 ] = ( 1 - ( xx + yy ) ) * sz;
		te[ 11 ] = 0;

		te[ 12 ] = position.x;
		te[ 13 ] = position.y;
		te[ 14 ] = position.z;
		te[ 15 ] = 1;

		return this;

	}

	decompose( position, quaternion, scale ) {

		const te = this.elements;

		let sx = _v1$5.set( te[ 0 ], te[ 1 ], te[ 2 ] ).length();
		const sy = _v1$5.set( te[ 4 ], te[ 5 ], te[ 6 ] ).length();
		const sz = _v1$5.set( te[ 8 ], te[ 9 ], te[ 10 ] ).length();

		// if determine is negative, we need to invert one scale
		const det = this.determinant();
		if ( det < 0 ) sx = - sx;

		position.x = te[ 12 ];
		position.y = te[ 13 ];
		position.z = te[ 14 ];

		// scale the rotation part
		_m1$2.copy( this );

		const invSX = 1 / sx;
		const invSY = 1 / sy;
		const invSZ = 1 / sz;

		_m1$2.elements[ 0 ] *= invSX;
		_m1$2.elements[ 1 ] *= invSX;
		_m1$2.elements[ 2 ] *= invSX;

		_m1$2.elements[ 4 ] *= invSY;
		_m1$2.elements[ 5 ] *= invSY;
		_m1$2.elements[ 6 ] *= invSY;

		_m1$2.elements[ 8 ] *= invSZ;
		_m1$2.elements[ 9 ] *= invSZ;
		_m1$2.elements[ 10 ] *= invSZ;

		quaternion.setFromRotationMatrix( _m1$2 );

		scale.x = sx;
		scale.y = sy;
		scale.z = sz;

		return this;

	}

	makePerspective( left, right, top, bottom, near, far ) {

		if ( far === undefined ) {

			console.warn( 'THREE.Matrix4: .makePerspective() has been redefined and has a new signature. Please check the docs.' );

		}

		const te = this.elements;
		const x = 2 * near / ( right - left );
		const y = 2 * near / ( top - bottom );

		const a = ( right + left ) / ( right - left );
		const b = ( top + bottom ) / ( top - bottom );
		const c = - ( far + near ) / ( far - near );
		const d = - 2 * far * near / ( far - near );

		te[ 0 ] = x;	te[ 4 ] = 0;	te[ 8 ] = a;	te[ 12 ] = 0;
		te[ 1 ] = 0;	te[ 5 ] = y;	te[ 9 ] = b;	te[ 13 ] = 0;
		te[ 2 ] = 0;	te[ 6 ] = 0;	te[ 10 ] = c;	te[ 14 ] = d;
		te[ 3 ] = 0;	te[ 7 ] = 0;	te[ 11 ] = - 1;	te[ 15 ] = 0;

		return this;

	}

	makeOrthographic( left, right, top, bottom, near, far ) {

		const te = this.elements;
		const w = 1.0 / ( right - left );
		const h = 1.0 / ( top - bottom );
		const p = 1.0 / ( far - near );

		const x = ( right + left ) * w;
		const y = ( top + bottom ) * h;
		const z = ( far + near ) * p;

		te[ 0 ] = 2 * w;	te[ 4 ] = 0;	te[ 8 ] = 0;	te[ 12 ] = - x;
		te[ 1 ] = 0;	te[ 5 ] = 2 * h;	te[ 9 ] = 0;	te[ 13 ] = - y;
		te[ 2 ] = 0;	te[ 6 ] = 0;	te[ 10 ] = - 2 * p;	te[ 14 ] = - z;
		te[ 3 ] = 0;	te[ 7 ] = 0;	te[ 11 ] = 0;	te[ 15 ] = 1;

		return this;

	}

	equals( matrix ) {

		const te = this.elements;
		const me = matrix.elements;

		for ( let i = 0; i < 16; i ++ ) {

			if ( te[ i ] !== me[ i ] ) return false;

		}

		return true;

	}

	fromArray( array, offset = 0 ) {

		for ( let i = 0; i < 16; i ++ ) {

			this.elements[ i ] = array[ i + offset ];

		}

		return this;

	}

	toArray( array = [], offset = 0 ) {

		const te = this.elements;

		array[ offset ] = te[ 0 ];
		array[ offset + 1 ] = te[ 1 ];
		array[ offset + 2 ] = te[ 2 ];
		array[ offset + 3 ] = te[ 3 ];

		array[ offset + 4 ] = te[ 4 ];
		array[ offset + 5 ] = te[ 5 ];
		array[ offset + 6 ] = te[ 6 ];
		array[ offset + 7 ] = te[ 7 ];

		array[ offset + 8 ] = te[ 8 ];
		array[ offset + 9 ] = te[ 9 ];
		array[ offset + 10 ] = te[ 10 ];
		array[ offset + 11 ] = te[ 11 ];

		array[ offset + 12 ] = te[ 12 ];
		array[ offset + 13 ] = te[ 13 ];
		array[ offset + 14 ] = te[ 14 ];
		array[ offset + 15 ] = te[ 15 ];

		return array;

	}

}

Matrix4.prototype.isMatrix4 = true;

const _v1$5 = /*@__PURE__*/ new Vector3();
const _m1$2 = /*@__PURE__*/ new Matrix4();
const _zero = /*@__PURE__*/ new Vector3( 0, 0, 0 );
const _one = /*@__PURE__*/ new Vector3( 1, 1, 1 );
const _x = /*@__PURE__*/ new Vector3();
const _y = /*@__PURE__*/ new Vector3();
const _z = /*@__PURE__*/ new Vector3();

const _matrix$1 = /*@__PURE__*/ new Matrix4();
const _quaternion$3 = /*@__PURE__*/ new Quaternion();

class Euler {

	constructor( x = 0, y = 0, z = 0, order = Euler.DefaultOrder ) {

		this._x = x;
		this._y = y;
		this._z = z;
		this._order = order;

	}

	get x() {

		return this._x;

	}

	set x( value ) {

		this._x = value;
		this._onChangeCallback();

	}

	get y() {

		return this._y;

	}

	set y( value ) {

		this._y = value;
		this._onChangeCallback();

	}

	get z() {

		return this._z;

	}

	set z( value ) {

		this._z = value;
		this._onChangeCallback();

	}

	get order() {

		return this._order;

	}

	set order( value ) {

		this._order = value;
		this._onChangeCallback();

	}

	set( x, y, z, order = this._order ) {

		this._x = x;
		this._y = y;
		this._z = z;
		this._order = order;

		this._onChangeCallback();

		return this;

	}

	clone() {

		return new this.constructor( this._x, this._y, this._z, this._order );

	}

	copy( euler ) {

		this._x = euler._x;
		this._y = euler._y;
		this._z = euler._z;
		this._order = euler._order;

		this._onChangeCallback();

		return this;

	}

	setFromRotationMatrix( m, order = this._order, update = true ) {

		// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)

		const te = m.elements;
		const m11 = te[ 0 ], m12 = te[ 4 ], m13 = te[ 8 ];
		const m21 = te[ 1 ], m22 = te[ 5 ], m23 = te[ 9 ];
		const m31 = te[ 2 ], m32 = te[ 6 ], m33 = te[ 10 ];

		switch ( order ) {

			case 'XYZ':

				this._y = Math.asin( clamp$1( m13, - 1, 1 ) );

				if ( Math.abs( m13 ) < 0.9999999 ) {

					this._x = Math.atan2( - m23, m33 );
					this._z = Math.atan2( - m12, m11 );

				} else {

					this._x = Math.atan2( m32, m22 );
					this._z = 0;

				}

				break;

			case 'YXZ':

				this._x = Math.asin( - clamp$1( m23, - 1, 1 ) );

				if ( Math.abs( m23 ) < 0.9999999 ) {

					this._y = Math.atan2( m13, m33 );
					this._z = Math.atan2( m21, m22 );

				} else {

					this._y = Math.atan2( - m31, m11 );
					this._z = 0;

				}

				break;

			case 'ZXY':

				this._x = Math.asin( clamp$1( m32, - 1, 1 ) );

				if ( Math.abs( m32 ) < 0.9999999 ) {

					this._y = Math.atan2( - m31, m33 );
					this._z = Math.atan2( - m12, m22 );

				} else {

					this._y = 0;
					this._z = Math.atan2( m21, m11 );

				}

				break;

			case 'ZYX':

				this._y = Math.asin( - clamp$1( m31, - 1, 1 ) );

				if ( Math.abs( m31 ) < 0.9999999 ) {

					this._x = Math.atan2( m32, m33 );
					this._z = Math.atan2( m21, m11 );

				} else {

					this._x = 0;
					this._z = Math.atan2( - m12, m22 );

				}

				break;

			case 'YZX':

				this._z = Math.asin( clamp$1( m21, - 1, 1 ) );

				if ( Math.abs( m21 ) < 0.9999999 ) {

					this._x = Math.atan2( - m23, m22 );
					this._y = Math.atan2( - m31, m11 );

				} else {

					this._x = 0;
					this._y = Math.atan2( m13, m33 );

				}

				break;

			case 'XZY':

				this._z = Math.asin( - clamp$1( m12, - 1, 1 ) );

				if ( Math.abs( m12 ) < 0.9999999 ) {

					this._x = Math.atan2( m32, m22 );
					this._y = Math.atan2( m13, m11 );

				} else {

					this._x = Math.atan2( - m23, m33 );
					this._y = 0;

				}

				break;

			default:

				console.warn( 'THREE.Euler: .setFromRotationMatrix() encountered an unknown order: ' + order );

		}

		this._order = order;

		if ( update === true ) this._onChangeCallback();

		return this;

	}

	setFromQuaternion( q, order, update ) {

		_matrix$1.makeRotationFromQuaternion( q );

		return this.setFromRotationMatrix( _matrix$1, order, update );

	}

	setFromVector3( v, order = this._order ) {

		return this.set( v.x, v.y, v.z, order );

	}

	reorder( newOrder ) {

		// WARNING: this discards revolution information -bhouston

		_quaternion$3.setFromEuler( this );

		return this.setFromQuaternion( _quaternion$3, newOrder );

	}

	equals( euler ) {

		return ( euler._x === this._x ) && ( euler._y === this._y ) && ( euler._z === this._z ) && ( euler._order === this._order );

	}

	fromArray( array ) {

		this._x = array[ 0 ];
		this._y = array[ 1 ];
		this._z = array[ 2 ];
		if ( array[ 3 ] !== undefined ) this._order = array[ 3 ];

		this._onChangeCallback();

		return this;

	}

	toArray( array = [], offset = 0 ) {

		array[ offset ] = this._x;
		array[ offset + 1 ] = this._y;
		array[ offset + 2 ] = this._z;
		array[ offset + 3 ] = this._order;

		return array;

	}

	_onChange( callback ) {

		this._onChangeCallback = callback;

		return this;

	}

	_onChangeCallback() {}

}

Euler.prototype.isEuler = true;

Euler.DefaultOrder = 'XYZ';
Euler.RotationOrders = [ 'XYZ', 'YZX', 'ZXY', 'XZY', 'YXZ', 'ZYX' ];

class Layers {

	constructor() {

		this.mask = 1 | 0;

	}

	set( channel ) {

		this.mask = ( 1 << channel | 0 ) >>> 0;

	}

	enable( channel ) {

		this.mask |= 1 << channel | 0;

	}

	enableAll() {

		this.mask = 0xffffffff | 0;

	}

	toggle( channel ) {

		this.mask ^= 1 << channel | 0;

	}

	disable( channel ) {

		this.mask &= ~ ( 1 << channel | 0 );

	}

	disableAll() {

		this.mask = 0;

	}

	test( layers ) {

		return ( this.mask & layers.mask ) !== 0;

	}

	isEnabled( channel ) {

		return ( this.mask & ( 1 << channel | 0 ) ) !== 0;

	}

}

let _object3DId = 0;

const _v1$4 = /*@__PURE__*/ new Vector3();
const _q1 = /*@__PURE__*/ new Quaternion();
const _m1$1 = /*@__PURE__*/ new Matrix4();
const _target = /*@__PURE__*/ new Vector3();

const _position$3 = /*@__PURE__*/ new Vector3();
const _scale$2 = /*@__PURE__*/ new Vector3();
const _quaternion$2 = /*@__PURE__*/ new Quaternion();

const _xAxis = /*@__PURE__*/ new Vector3( 1, 0, 0 );
const _yAxis = /*@__PURE__*/ new Vector3( 0, 1, 0 );
const _zAxis = /*@__PURE__*/ new Vector3( 0, 0, 1 );

const _addedEvent = { type: 'added' };
const _removedEvent = { type: 'removed' };

class Object3D extends EventDispatcher {

	constructor() {

		super();

		Object.defineProperty( this, 'id', { value: _object3DId ++ } );

		this.uuid = generateUUID();

		this.name = '';
		this.type = 'Object3D';

		this.parent = null;
		this.children = [];

		this.up = Object3D.DefaultUp.clone();

		const position = new Vector3();
		const rotation = new Euler();
		const quaternion = new Quaternion();
		const scale = new Vector3( 1, 1, 1 );

		function onRotationChange() {

			quaternion.setFromEuler( rotation, false );

		}

		function onQuaternionChange() {

			rotation.setFromQuaternion( quaternion, undefined, false );

		}

		rotation._onChange( onRotationChange );
		quaternion._onChange( onQuaternionChange );

		Object.defineProperties( this, {
			position: {
				configurable: true,
				enumerable: true,
				value: position
			},
			rotation: {
				configurable: true,
				enumerable: true,
				value: rotation
			},
			quaternion: {
				configurable: true,
				enumerable: true,
				value: quaternion
			},
			scale: {
				configurable: true,
				enumerable: true,
				value: scale
			},
			modelViewMatrix: {
				value: new Matrix4()
			},
			normalMatrix: {
				value: new Matrix3()
			}
		} );

		this.matrix = new Matrix4();
		this.matrixWorld = new Matrix4();

		this.matrixAutoUpdate = Object3D.DefaultMatrixAutoUpdate;
		this.matrixWorldNeedsUpdate = false;

		this.layers = new Layers();
		this.visible = true;

		this.castShadow = false;
		this.receiveShadow = false;

		this.frustumCulled = true;
		this.renderOrder = 0;

		this.animations = [];

		this.userData = {};

	}

	onBeforeRender( /* renderer, scene, camera, geometry, material, group */ ) {}

	onAfterRender( /* renderer, scene, camera, geometry, material, group */ ) {}

	applyMatrix4( matrix ) {

		if ( this.matrixAutoUpdate ) this.updateMatrix();

		this.matrix.premultiply( matrix );

		this.matrix.decompose( this.position, this.quaternion, this.scale );

	}

	applyQuaternion( q ) {

		this.quaternion.premultiply( q );

		return this;

	}

	setRotationFromAxisAngle( axis, angle ) {

		// assumes axis is normalized

		this.quaternion.setFromAxisAngle( axis, angle );

	}

	setRotationFromEuler( euler ) {

		this.quaternion.setFromEuler( euler, true );

	}

	setRotationFromMatrix( m ) {

		// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)

		this.quaternion.setFromRotationMatrix( m );

	}

	setRotationFromQuaternion( q ) {

		// assumes q is normalized

		this.quaternion.copy( q );

	}

	rotateOnAxis( axis, angle ) {

		// rotate object on axis in object space
		// axis is assumed to be normalized

		_q1.setFromAxisAngle( axis, angle );

		this.quaternion.multiply( _q1 );

		return this;

	}

	rotateOnWorldAxis( axis, angle ) {

		// rotate object on axis in world space
		// axis is assumed to be normalized
		// method assumes no rotated parent

		_q1.setFromAxisAngle( axis, angle );

		this.quaternion.premultiply( _q1 );

		return this;

	}

	rotateX( angle ) {

		return this.rotateOnAxis( _xAxis, angle );

	}

	rotateY( angle ) {

		return this.rotateOnAxis( _yAxis, angle );

	}

	rotateZ( angle ) {

		return this.rotateOnAxis( _zAxis, angle );

	}

	translateOnAxis( axis, distance ) {

		// translate object by distance along axis in object space
		// axis is assumed to be normalized

		_v1$4.copy( axis ).applyQuaternion( this.quaternion );

		this.position.add( _v1$4.multiplyScalar( distance ) );

		return this;

	}

	translateX( distance ) {

		return this.translateOnAxis( _xAxis, distance );

	}

	translateY( distance ) {

		return this.translateOnAxis( _yAxis, distance );

	}

	translateZ( distance ) {

		return this.translateOnAxis( _zAxis, distance );

	}

	localToWorld( vector ) {

		return vector.applyMatrix4( this.matrixWorld );

	}

	worldToLocal( vector ) {

		return vector.applyMatrix4( _m1$1.copy( this.matrixWorld ).invert() );

	}

	lookAt( x, y, z ) {

		// This method does not support objects having non-uniformly-scaled parent(s)

		if ( x.isVector3 ) {

			_target.copy( x );

		} else {

			_target.set( x, y, z );

		}

		const parent = this.parent;

		this.updateWorldMatrix( true, false );

		_position$3.setFromMatrixPosition( this.matrixWorld );

		if ( this.isCamera || this.isLight ) {

			_m1$1.lookAt( _position$3, _target, this.up );

		} else {

			_m1$1.lookAt( _target, _position$3, this.up );

		}

		this.quaternion.setFromRotationMatrix( _m1$1 );

		if ( parent ) {

			_m1$1.extractRotation( parent.matrixWorld );
			_q1.setFromRotationMatrix( _m1$1 );
			this.quaternion.premultiply( _q1.invert() );

		}

	}

	add( object ) {

		if ( arguments.length > 1 ) {

			for ( let i = 0; i < arguments.length; i ++ ) {

				this.add( arguments[ i ] );

			}

			return this;

		}

		if ( object === this ) {

			console.error( 'THREE.Object3D.add: object can\'t be added as a child of itself.', object );
			return this;

		}

		if ( object && object.isObject3D ) {

			if ( object.parent !== null ) {

				object.parent.remove( object );

			}

			object.parent = this;
			this.children.push( object );

			object.dispatchEvent( _addedEvent );

		} else {

			console.error( 'THREE.Object3D.add: object not an instance of THREE.Object3D.', object );

		}

		return this;

	}

	remove( object ) {

		if ( arguments.length > 1 ) {

			for ( let i = 0; i < arguments.length; i ++ ) {

				this.remove( arguments[ i ] );

			}

			return this;

		}

		const index = this.children.indexOf( object );

		if ( index !== - 1 ) {

			object.parent = null;
			this.children.splice( index, 1 );

			object.dispatchEvent( _removedEvent );

		}

		return this;

	}

	removeFromParent() {

		const parent = this.parent;

		if ( parent !== null ) {

			parent.remove( this );

		}

		return this;

	}

	clear() {

		for ( let i = 0; i < this.children.length; i ++ ) {

			const object = this.children[ i ];

			object.parent = null;

			object.dispatchEvent( _removedEvent );

		}

		this.children.length = 0;

		return this;


	}

	attach( object ) {

		// adds object as a child of this, while maintaining the object's world transform

		// Note: This method does not support scene graphs having non-uniformly-scaled nodes(s)

		this.updateWorldMatrix( true, false );

		_m1$1.copy( this.matrixWorld ).invert();

		if ( object.parent !== null ) {

			object.parent.updateWorldMatrix( true, false );

			_m1$1.multiply( object.parent.matrixWorld );

		}

		object.applyMatrix4( _m1$1 );

		this.add( object );

		object.updateWorldMatrix( false, true );

		return this;

	}

	getObjectById( id ) {

		return this.getObjectByProperty( 'id', id );

	}

	getObjectByName( name ) {

		return this.getObjectByProperty( 'name', name );

	}

	getObjectByProperty( name, value ) {

		if ( this[ name ] === value ) return this;

		for ( let i = 0, l = this.children.length; i < l; i ++ ) {

			const child = this.children[ i ];
			const object = child.getObjectByProperty( name, value );

			if ( object !== undefined ) {

				return object;

			}

		}

		return undefined;

	}

	getWorldPosition( target ) {

		this.updateWorldMatrix( true, false );

		return target.setFromMatrixPosition( this.matrixWorld );

	}

	getWorldQuaternion( target ) {

		this.updateWorldMatrix( true, false );

		this.matrixWorld.decompose( _position$3, target, _scale$2 );

		return target;

	}

	getWorldScale( target ) {

		this.updateWorldMatrix( true, false );

		this.matrixWorld.decompose( _position$3, _quaternion$2, target );

		return target;

	}

	getWorldDirection( target ) {

		this.updateWorldMatrix( true, false );

		const e = this.matrixWorld.elements;

		return target.set( e[ 8 ], e[ 9 ], e[ 10 ] ).normalize();

	}

	raycast( /* raycaster, intersects */ ) {}

	traverse( callback ) {

		callback( this );

		const children = this.children;

		for ( let i = 0, l = children.length; i < l; i ++ ) {

			children[ i ].traverse( callback );

		}

	}

	traverseVisible( callback ) {

		if ( this.visible === false ) return;

		callback( this );

		const children = this.children;

		for ( let i = 0, l = children.length; i < l; i ++ ) {

			children[ i ].traverseVisible( callback );

		}

	}

	traverseAncestors( callback ) {

		const parent = this.parent;

		if ( parent !== null ) {

			callback( parent );

			parent.traverseAncestors( callback );

		}

	}

	updateMatrix() {

		this.matrix.compose( this.position, this.quaternion, this.scale );

		this.matrixWorldNeedsUpdate = true;

	}

	updateMatrixWorld( force ) {

		if ( this.matrixAutoUpdate ) this.updateMatrix();

		if ( this.matrixWorldNeedsUpdate || force ) {

			if ( this.parent === null ) {

				this.matrixWorld.copy( this.matrix );

			} else {

				this.matrixWorld.multiplyMatrices( this.parent.matrixWorld, this.matrix );

			}

			this.matrixWorldNeedsUpdate = false;

			force = true;

		}

		// update children

		const children = this.children;

		for ( let i = 0, l = children.length; i < l; i ++ ) {

			children[ i ].updateMatrixWorld( force );

		}

	}

	updateWorldMatrix( updateParents, updateChildren ) {

		const parent = this.parent;

		if ( updateParents === true && parent !== null ) {

			parent.updateWorldMatrix( true, false );

		}

		if ( this.matrixAutoUpdate ) this.updateMatrix();

		if ( this.parent === null ) {

			this.matrixWorld.copy( this.matrix );

		} else {

			this.matrixWorld.multiplyMatrices( this.parent.matrixWorld, this.matrix );

		}

		// update children

		if ( updateChildren === true ) {

			const children = this.children;

			for ( let i = 0, l = children.length; i < l; i ++ ) {

				children[ i ].updateWorldMatrix( false, true );

			}

		}

	}

	toJSON( meta ) {

		// meta is a string when called from JSON.stringify
		const isRootObject = ( meta === undefined || typeof meta === 'string' );

		const output = {};

		// meta is a hash used to collect geometries, materials.
		// not providing it implies that this is the root object
		// being serialized.
		if ( isRootObject ) {

			// initialize meta obj
			meta = {
				geometries: {},
				materials: {},
				textures: {},
				images: {},
				shapes: {},
				skeletons: {},
				animations: {},
				nodes: {}
			};

			output.metadata = {
				version: 4.5,
				type: 'Object',
				generator: 'Object3D.toJSON'
			};

		}

		// standard Object3D serialization

		const object = {};

		object.uuid = this.uuid;
		object.type = this.type;

		if ( this.name !== '' ) object.name = this.name;
		if ( this.castShadow === true ) object.castShadow = true;
		if ( this.receiveShadow === true ) object.receiveShadow = true;
		if ( this.visible === false ) object.visible = false;
		if ( this.frustumCulled === false ) object.frustumCulled = false;
		if ( this.renderOrder !== 0 ) object.renderOrder = this.renderOrder;
		if ( JSON.stringify( this.userData ) !== '{}' ) object.userData = this.userData;

		object.layers = this.layers.mask;
		object.matrix = this.matrix.toArray();

		if ( this.matrixAutoUpdate === false ) object.matrixAutoUpdate = false;

		// object specific properties

		if ( this.isInstancedMesh ) {

			object.type = 'InstancedMesh';
			object.count = this.count;
			object.instanceMatrix = this.instanceMatrix.toJSON();
			if ( this.instanceColor !== null ) object.instanceColor = this.instanceColor.toJSON();

		}

		//

		function serialize( library, element ) {

			if ( library[ element.uuid ] === undefined ) {

				library[ element.uuid ] = element.toJSON( meta );

			}

			return element.uuid;

		}

		if ( this.isScene ) {

			if ( this.background ) {

				if ( this.background.isColor ) {

					object.background = this.background.toJSON();

				} else if ( this.background.isTexture ) {

					object.background = this.background.toJSON( meta ).uuid;

				}

			}

			if ( this.environment && this.environment.isTexture ) {

				object.environment = this.environment.toJSON( meta ).uuid;

			}

		} else if ( this.isMesh || this.isLine || this.isPoints ) {

			object.geometry = serialize( meta.geometries, this.geometry );

			const parameters = this.geometry.parameters;

			if ( parameters !== undefined && parameters.shapes !== undefined ) {

				const shapes = parameters.shapes;

				if ( Array.isArray( shapes ) ) {

					for ( let i = 0, l = shapes.length; i < l; i ++ ) {

						const shape = shapes[ i ];

						serialize( meta.shapes, shape );

					}

				} else {

					serialize( meta.shapes, shapes );

				}

			}

		}

		if ( this.isSkinnedMesh ) {

			object.bindMode = this.bindMode;
			object.bindMatrix = this.bindMatrix.toArray();

			if ( this.skeleton !== undefined ) {

				serialize( meta.skeletons, this.skeleton );

				object.skeleton = this.skeleton.uuid;

			}

		}

		if ( this.material !== undefined ) {

			if ( Array.isArray( this.material ) ) {

				const uuids = [];

				for ( let i = 0, l = this.material.length; i < l; i ++ ) {

					uuids.push( serialize( meta.materials, this.material[ i ] ) );

				}

				object.material = uuids;

			} else {

				object.material = serialize( meta.materials, this.material );

			}

		}

		//

		if ( this.children.length > 0 ) {

			object.children = [];

			for ( let i = 0; i < this.children.length; i ++ ) {

				object.children.push( this.children[ i ].toJSON( meta ).object );

			}

		}

		//

		if ( this.animations.length > 0 ) {

			object.animations = [];

			for ( let i = 0; i < this.animations.length; i ++ ) {

				const animation = this.animations[ i ];

				object.animations.push( serialize( meta.animations, animation ) );

			}

		}

		if ( isRootObject ) {

			const geometries = extractFromCache( meta.geometries );
			const materials = extractFromCache( meta.materials );
			const textures = extractFromCache( meta.textures );
			const images = extractFromCache( meta.images );
			const shapes = extractFromCache( meta.shapes );
			const skeletons = extractFromCache( meta.skeletons );
			const animations = extractFromCache( meta.animations );
			const nodes = extractFromCache( meta.nodes );

			if ( geometries.length > 0 ) output.geometries = geometries;
			if ( materials.length > 0 ) output.materials = materials;
			if ( textures.length > 0 ) output.textures = textures;
			if ( images.length > 0 ) output.images = images;
			if ( shapes.length > 0 ) output.shapes = shapes;
			if ( skeletons.length > 0 ) output.skeletons = skeletons;
			if ( animations.length > 0 ) output.animations = animations;
			if ( nodes.length > 0 ) output.nodes = nodes;

		}

		output.object = object;

		return output;

		// extract data from the cache hash
		// remove metadata on each item
		// and return as array
		function extractFromCache( cache ) {

			const values = [];
			for ( const key in cache ) {

				const data = cache[ key ];
				delete data.metadata;
				values.push( data );

			}

			return values;

		}

	}

	clone( recursive ) {

		return new this.constructor().copy( this, recursive );

	}

	copy( source, recursive = true ) {

		this.name = source.name;

		this.up.copy( source.up );

		this.position.copy( source.position );
		this.rotation.order = source.rotation.order;
		this.quaternion.copy( source.quaternion );
		this.scale.copy( source.scale );

		this.matrix.copy( source.matrix );
		this.matrixWorld.copy( source.matrixWorld );

		this.matrixAutoUpdate = source.matrixAutoUpdate;
		this.matrixWorldNeedsUpdate = source.matrixWorldNeedsUpdate;

		this.layers.mask = source.layers.mask;
		this.visible = source.visible;

		this.castShadow = source.castShadow;
		this.receiveShadow = source.receiveShadow;

		this.frustumCulled = source.frustumCulled;
		this.renderOrder = source.renderOrder;

		this.userData = JSON.parse( JSON.stringify( source.userData ) );

		if ( recursive === true ) {

			for ( let i = 0; i < source.children.length; i ++ ) {

				const child = source.children[ i ];
				this.add( child.clone() );

			}

		}

		return this;

	}

}

Object3D.DefaultUp = new Vector3( 0, 1, 0 );
Object3D.DefaultMatrixAutoUpdate = true;

Object3D.prototype.isObject3D = true;

const _v0$1 = /*@__PURE__*/ new Vector3();
const _v1$3 = /*@__PURE__*/ new Vector3();
const _v2$2 = /*@__PURE__*/ new Vector3();
const _v3$1 = /*@__PURE__*/ new Vector3();

const _vab = /*@__PURE__*/ new Vector3();
const _vac = /*@__PURE__*/ new Vector3();
const _vbc = /*@__PURE__*/ new Vector3();
const _vap = /*@__PURE__*/ new Vector3();
const _vbp = /*@__PURE__*/ new Vector3();
const _vcp = /*@__PURE__*/ new Vector3();

class Triangle {

	constructor( a = new Vector3(), b = new Vector3(), c = new Vector3() ) {

		this.a = a;
		this.b = b;
		this.c = c;

	}

	static getNormal( a, b, c, target ) {

		target.subVectors( c, b );
		_v0$1.subVectors( a, b );
		target.cross( _v0$1 );

		const targetLengthSq = target.lengthSq();
		if ( targetLengthSq > 0 ) {

			return target.multiplyScalar( 1 / Math.sqrt( targetLengthSq ) );

		}

		return target.set( 0, 0, 0 );

	}

	// static/instance method to calculate barycentric coordinates
	// based on: http://www.blackpawn.com/texts/pointinpoly/default.html
	static getBarycoord( point, a, b, c, target ) {

		_v0$1.subVectors( c, a );
		_v1$3.subVectors( b, a );
		_v2$2.subVectors( point, a );

		const dot00 = _v0$1.dot( _v0$1 );
		const dot01 = _v0$1.dot( _v1$3 );
		const dot02 = _v0$1.dot( _v2$2 );
		const dot11 = _v1$3.dot( _v1$3 );
		const dot12 = _v1$3.dot( _v2$2 );

		const denom = ( dot00 * dot11 - dot01 * dot01 );

		// collinear or singular triangle
		if ( denom === 0 ) {

			// arbitrary location outside of triangle?
			// not sure if this is the best idea, maybe should be returning undefined
			return target.set( - 2, - 1, - 1 );

		}

		const invDenom = 1 / denom;
		const u = ( dot11 * dot02 - dot01 * dot12 ) * invDenom;
		const v = ( dot00 * dot12 - dot01 * dot02 ) * invDenom;

		// barycentric coordinates must always sum to 1
		return target.set( 1 - u - v, v, u );

	}

	static containsPoint( point, a, b, c ) {

		this.getBarycoord( point, a, b, c, _v3$1 );

		return ( _v3$1.x >= 0 ) && ( _v3$1.y >= 0 ) && ( ( _v3$1.x + _v3$1.y ) <= 1 );

	}

	static getUV( point, p1, p2, p3, uv1, uv2, uv3, target ) {

		this.getBarycoord( point, p1, p2, p3, _v3$1 );

		target.set( 0, 0 );
		target.addScaledVector( uv1, _v3$1.x );
		target.addScaledVector( uv2, _v3$1.y );
		target.addScaledVector( uv3, _v3$1.z );

		return target;

	}

	static isFrontFacing( a, b, c, direction ) {

		_v0$1.subVectors( c, b );
		_v1$3.subVectors( a, b );

		// strictly front facing
		return ( _v0$1.cross( _v1$3 ).dot( direction ) < 0 ) ? true : false;

	}

	set( a, b, c ) {

		this.a.copy( a );
		this.b.copy( b );
		this.c.copy( c );

		return this;

	}

	setFromPointsAndIndices( points, i0, i1, i2 ) {

		this.a.copy( points[ i0 ] );
		this.b.copy( points[ i1 ] );
		this.c.copy( points[ i2 ] );

		return this;

	}

	setFromAttributeAndIndices( attribute, i0, i1, i2 ) {

		this.a.fromBufferAttribute( attribute, i0 );
		this.b.fromBufferAttribute( attribute, i1 );
		this.c.fromBufferAttribute( attribute, i2 );

		return this;

	}

	clone() {

		return new this.constructor().copy( this );

	}

	copy( triangle ) {

		this.a.copy( triangle.a );
		this.b.copy( triangle.b );
		this.c.copy( triangle.c );

		return this;

	}

	getArea() {

		_v0$1.subVectors( this.c, this.b );
		_v1$3.subVectors( this.a, this.b );

		return _v0$1.cross( _v1$3 ).length() * 0.5;

	}

	getMidpoint( target ) {

		return target.addVectors( this.a, this.b ).add( this.c ).multiplyScalar( 1 / 3 );

	}

	getNormal( target ) {

		return Triangle.getNormal( this.a, this.b, this.c, target );

	}

	getPlane( target ) {

		return target.setFromCoplanarPoints( this.a, this.b, this.c );

	}

	getBarycoord( point, target ) {

		return Triangle.getBarycoord( point, this.a, this.b, this.c, target );

	}

	getUV( point, uv1, uv2, uv3, target ) {

		return Triangle.getUV( point, this.a, this.b, this.c, uv1, uv2, uv3, target );

	}

	containsPoint( point ) {

		return Triangle.containsPoint( point, this.a, this.b, this.c );

	}

	isFrontFacing( direction ) {

		return Triangle.isFrontFacing( this.a, this.b, this.c, direction );

	}

	intersectsBox( box ) {

		return box.intersectsTriangle( this );

	}

	closestPointToPoint( p, target ) {

		const a = this.a, b = this.b, c = this.c;
		let v, w;

		// algorithm thanks to Real-Time Collision Detection by Christer Ericson,
		// published by Morgan Kaufmann Publishers, (c) 2005 Elsevier Inc.,
		// under the accompanying license; see chapter 5.1.5 for detailed explanation.
		// basically, we're distinguishing which of the voronoi regions of the triangle
		// the point lies in with the minimum amount of redundant computation.

		_vab.subVectors( b, a );
		_vac.subVectors( c, a );
		_vap.subVectors( p, a );
		const d1 = _vab.dot( _vap );
		const d2 = _vac.dot( _vap );
		if ( d1 <= 0 && d2 <= 0 ) {

			// vertex region of A; barycentric coords (1, 0, 0)
			return target.copy( a );

		}

		_vbp.subVectors( p, b );
		const d3 = _vab.dot( _vbp );
		const d4 = _vac.dot( _vbp );
		if ( d3 >= 0 && d4 <= d3 ) {

			// vertex region of B; barycentric coords (0, 1, 0)
			return target.copy( b );

		}

		const vc = d1 * d4 - d3 * d2;
		if ( vc <= 0 && d1 >= 0 && d3 <= 0 ) {

			v = d1 / ( d1 - d3 );
			// edge region of AB; barycentric coords (1-v, v, 0)
			return target.copy( a ).addScaledVector( _vab, v );

		}

		_vcp.subVectors( p, c );
		const d5 = _vab.dot( _vcp );
		const d6 = _vac.dot( _vcp );
		if ( d6 >= 0 && d5 <= d6 ) {

			// vertex region of C; barycentric coords (0, 0, 1)
			return target.copy( c );

		}

		const vb = d5 * d2 - d1 * d6;
		if ( vb <= 0 && d2 >= 0 && d6 <= 0 ) {

			w = d2 / ( d2 - d6 );
			// edge region of AC; barycentric coords (1-w, 0, w)
			return target.copy( a ).addScaledVector( _vac, w );

		}

		const va = d3 * d6 - d5 * d4;
		if ( va <= 0 && ( d4 - d3 ) >= 0 && ( d5 - d6 ) >= 0 ) {

			_vbc.subVectors( c, b );
			w = ( d4 - d3 ) / ( ( d4 - d3 ) + ( d5 - d6 ) );
			// edge region of BC; barycentric coords (0, 1-w, w)
			return target.copy( b ).addScaledVector( _vbc, w ); // edge region of BC

		}

		// face region
		const denom = 1 / ( va + vb + vc );
		// u = va * denom
		v = vb * denom;
		w = vc * denom;

		return target.copy( a ).addScaledVector( _vab, v ).addScaledVector( _vac, w );

	}

	equals( triangle ) {

		return triangle.a.equals( this.a ) && triangle.b.equals( this.b ) && triangle.c.equals( this.c );

	}

}

let materialId = 0;

class Material extends EventDispatcher {

	constructor() {

		super();

		Object.defineProperty( this, 'id', { value: materialId ++ } );

		this.uuid = generateUUID();

		this.name = '';
		this.type = 'Material';

		this.fog = true;

		this.blending = NormalBlending;
		this.side = FrontSide;
		this.vertexColors = false;

		this.opacity = 1;
		this.transparent = false;

		this.blendSrc = SrcAlphaFactor;
		this.blendDst = OneMinusSrcAlphaFactor;
		this.blendEquation = AddEquation;
		this.blendSrcAlpha = null;
		this.blendDstAlpha = null;
		this.blendEquationAlpha = null;

		this.depthFunc = LessEqualDepth;
		this.depthTest = true;
		this.depthWrite = true;

		this.stencilWriteMask = 0xff;
		this.stencilFunc = AlwaysStencilFunc;
		this.stencilRef = 0;
		this.stencilFuncMask = 0xff;
		this.stencilFail = KeepStencilOp;
		this.stencilZFail = KeepStencilOp;
		this.stencilZPass = KeepStencilOp;
		this.stencilWrite = false;

		this.clippingPlanes = null;
		this.clipIntersection = false;
		this.clipShadows = false;

		this.shadowSide = null;

		this.colorWrite = true;

		this.precision = null; // override the renderer's default precision for this material

		this.polygonOffset = false;
		this.polygonOffsetFactor = 0;
		this.polygonOffsetUnits = 0;

		this.dithering = false;

		this.alphaToCoverage = false;
		this.premultipliedAlpha = false;

		this.visible = true;

		this.toneMapped = true;

		this.userData = {};

		this.version = 0;

		this._alphaTest = 0;

	}

	get alphaTest() {

		return this._alphaTest;

	}

	set alphaTest( value ) {

		if ( this._alphaTest > 0 !== value > 0 ) {

			this.version ++;

		}

		this._alphaTest = value;

	}

	onBuild( /* shaderobject, renderer */ ) {}

	onBeforeRender( /* renderer, scene, camera, geometry, object, group */ ) {}

	onBeforeCompile( /* shaderobject, renderer */ ) {}

	customProgramCacheKey() {

		return this.onBeforeCompile.toString();

	}

	setValues( values ) {

		if ( values === undefined ) return;

		for ( const key in values ) {

			const newValue = values[ key ];

			if ( newValue === undefined ) {

				console.warn( 'THREE.Material: \'' + key + '\' parameter is undefined.' );
				continue;

			}

			// for backward compatability if shading is set in the constructor
			if ( key === 'shading' ) {

				console.warn( 'THREE.' + this.type + ': .shading has been removed. Use the boolean .flatShading instead.' );
				this.flatShading = ( newValue === FlatShading ) ? true : false;
				continue;

			}

			const currentValue = this[ key ];

			if ( currentValue === undefined ) {

				console.warn( 'THREE.' + this.type + ': \'' + key + '\' is not a property of this material.' );
				continue;

			}

			if ( currentValue && currentValue.isColor ) {

				currentValue.set( newValue );

			} else if ( ( currentValue && currentValue.isVector3 ) && ( newValue && newValue.isVector3 ) ) {

				currentValue.copy( newValue );

			} else {

				this[ key ] = newValue;

			}

		}

	}

	toJSON( meta ) {

		const isRootObject = ( meta === undefined || typeof meta === 'string' );

		if ( isRootObject ) {

			meta = {
				textures: {},
				images: {}
			};

		}

		const data = {
			metadata: {
				version: 4.5,
				type: 'Material',
				generator: 'Material.toJSON'
			}
		};

		// standard Material serialization
		data.uuid = this.uuid;
		data.type = this.type;

		if ( this.name !== '' ) data.name = this.name;

		if ( this.color && this.color.isColor ) data.color = this.color.getHex();

		if ( this.roughness !== undefined ) data.roughness = this.roughness;
		if ( this.metalness !== undefined ) data.metalness = this.metalness;

		if ( this.sheen !== undefined ) data.sheen = this.sheen;
		if ( this.sheenColor && this.sheenColor.isColor ) data.sheenColor = this.sheenColor.getHex();
		if ( this.sheenRoughness !== undefined ) data.sheenRoughness = this.sheenRoughness;
		if ( this.emissive && this.emissive.isColor ) data.emissive = this.emissive.getHex();
		if ( this.emissiveIntensity && this.emissiveIntensity !== 1 ) data.emissiveIntensity = this.emissiveIntensity;

		if ( this.specular && this.specular.isColor ) data.specular = this.specular.getHex();
		if ( this.specularIntensity !== undefined ) data.specularIntensity = this.specularIntensity;
		if ( this.specularColor && this.specularColor.isColor ) data.specularColor = this.specularColor.getHex();
		if ( this.shininess !== undefined ) data.shininess = this.shininess;
		if ( this.clearcoat !== undefined ) data.clearcoat = this.clearcoat;
		if ( this.clearcoatRoughness !== undefined ) data.clearcoatRoughness = this.clearcoatRoughness;

		if ( this.clearcoatMap && this.clearcoatMap.isTexture ) {

			data.clearcoatMap = this.clearcoatMap.toJSON( meta ).uuid;

		}

		if ( this.clearcoatRoughnessMap && this.clearcoatRoughnessMap.isTexture ) {

			data.clearcoatRoughnessMap = this.clearcoatRoughnessMap.toJSON( meta ).uuid;

		}

		if ( this.clearcoatNormalMap && this.clearcoatNormalMap.isTexture ) {

			data.clearcoatNormalMap = this.clearcoatNormalMap.toJSON( meta ).uuid;
			data.clearcoatNormalScale = this.clearcoatNormalScale.toArray();

		}

		if ( this.map && this.map.isTexture ) data.map = this.map.toJSON( meta ).uuid;
		if ( this.matcap && this.matcap.isTexture ) data.matcap = this.matcap.toJSON( meta ).uuid;
		if ( this.alphaMap && this.alphaMap.isTexture ) data.alphaMap = this.alphaMap.toJSON( meta ).uuid;

		if ( this.lightMap && this.lightMap.isTexture ) {

			data.lightMap = this.lightMap.toJSON( meta ).uuid;
			data.lightMapIntensity = this.lightMapIntensity;

		}

		if ( this.aoMap && this.aoMap.isTexture ) {

			data.aoMap = this.aoMap.toJSON( meta ).uuid;
			data.aoMapIntensity = this.aoMapIntensity;

		}

		if ( this.bumpMap && this.bumpMap.isTexture ) {

			data.bumpMap = this.bumpMap.toJSON( meta ).uuid;
			data.bumpScale = this.bumpScale;

		}

		if ( this.normalMap && this.normalMap.isTexture ) {

			data.normalMap = this.normalMap.toJSON( meta ).uuid;
			data.normalMapType = this.normalMapType;
			data.normalScale = this.normalScale.toArray();

		}

		if ( this.displacementMap && this.displacementMap.isTexture ) {

			data.displacementMap = this.displacementMap.toJSON( meta ).uuid;
			data.displacementScale = this.displacementScale;
			data.displacementBias = this.displacementBias;

		}

		if ( this.roughnessMap && this.roughnessMap.isTexture ) data.roughnessMap = this.roughnessMap.toJSON( meta ).uuid;
		if ( this.metalnessMap && this.metalnessMap.isTexture ) data.metalnessMap = this.metalnessMap.toJSON( meta ).uuid;

		if ( this.emissiveMap && this.emissiveMap.isTexture ) data.emissiveMap = this.emissiveMap.toJSON( meta ).uuid;
		if ( this.specularMap && this.specularMap.isTexture ) data.specularMap = this.specularMap.toJSON( meta ).uuid;
		if ( this.specularIntensityMap && this.specularIntensityMap.isTexture ) data.specularIntensityMap = this.specularIntensityMap.toJSON( meta ).uuid;
		if ( this.specularColorMap && this.specularColorMap.isTexture ) data.specularColorMap = this.specularColorMap.toJSON( meta ).uuid;

		if ( this.envMap && this.envMap.isTexture ) {

			data.envMap = this.envMap.toJSON( meta ).uuid;

			if ( this.combine !== undefined ) data.combine = this.combine;

		}

		if ( this.envMapIntensity !== undefined ) data.envMapIntensity = this.envMapIntensity;
		if ( this.reflectivity !== undefined ) data.reflectivity = this.reflectivity;
		if ( this.refractionRatio !== undefined ) data.refractionRatio = this.refractionRatio;

		if ( this.gradientMap && this.gradientMap.isTexture ) {

			data.gradientMap = this.gradientMap.toJSON( meta ).uuid;

		}

		if ( this.transmission !== undefined ) data.transmission = this.transmission;
		if ( this.transmissionMap && this.transmissionMap.isTexture ) data.transmissionMap = this.transmissionMap.toJSON( meta ).uuid;
		if ( this.thickness !== undefined ) data.thickness = this.thickness;
		if ( this.thicknessMap && this.thicknessMap.isTexture ) data.thicknessMap = this.thicknessMap.toJSON( meta ).uuid;
		if ( this.attenuationDistance !== undefined ) data.attenuationDistance = this.attenuationDistance;
		if ( this.attenuationColor !== undefined ) data.attenuationColor = this.attenuationColor.getHex();

		if ( this.size !== undefined ) data.size = this.size;
		if ( this.shadowSide !== null ) data.shadowSide = this.shadowSide;
		if ( this.sizeAttenuation !== undefined ) data.sizeAttenuation = this.sizeAttenuation;

		if ( this.blending !== NormalBlending ) data.blending = this.blending;
		if ( this.side !== FrontSide ) data.side = this.side;
		if ( this.vertexColors ) data.vertexColors = true;

		if ( this.opacity < 1 ) data.opacity = this.opacity;
		if ( this.transparent === true ) data.transparent = this.transparent;

		data.depthFunc = this.depthFunc;
		data.depthTest = this.depthTest;
		data.depthWrite = this.depthWrite;
		data.colorWrite = this.colorWrite;

		data.stencilWrite = this.stencilWrite;
		data.stencilWriteMask = this.stencilWriteMask;
		data.stencilFunc = this.stencilFunc;
		data.stencilRef = this.stencilRef;
		data.stencilFuncMask = this.stencilFuncMask;
		data.stencilFail = this.stencilFail;
		data.stencilZFail = this.stencilZFail;
		data.stencilZPass = this.stencilZPass;

		// rotation (SpriteMaterial)
		if ( this.rotation !== undefined && this.rotation !== 0 ) data.rotation = this.rotation;

		if ( this.polygonOffset === true ) data.polygonOffset = true;
		if ( this.polygonOffsetFactor !== 0 ) data.polygonOffsetFactor = this.polygonOffsetFactor;
		if ( this.polygonOffsetUnits !== 0 ) data.polygonOffsetUnits = this.polygonOffsetUnits;

		if ( this.linewidth !== undefined && this.linewidth !== 1 ) data.linewidth = this.linewidth;
		if ( this.dashSize !== undefined ) data.dashSize = this.dashSize;
		if ( this.gapSize !== undefined ) data.gapSize = this.gapSize;
		if ( this.scale !== undefined ) data.scale = this.scale;

		if ( this.dithering === true ) data.dithering = true;

		if ( this.alphaTest > 0 ) data.alphaTest = this.alphaTest;
		if ( this.alphaToCoverage === true ) data.alphaToCoverage = this.alphaToCoverage;
		if ( this.premultipliedAlpha === true ) data.premultipliedAlpha = this.premultipliedAlpha;

		if ( this.wireframe === true ) data.wireframe = this.wireframe;
		if ( this.wireframeLinewidth > 1 ) data.wireframeLinewidth = this.wireframeLinewidth;
		if ( this.wireframeLinecap !== 'round' ) data.wireframeLinecap = this.wireframeLinecap;
		if ( this.wireframeLinejoin !== 'round' ) data.wireframeLinejoin = this.wireframeLinejoin;

		if ( this.flatShading === true ) data.flatShading = this.flatShading;

		if ( this.visible === false ) data.visible = false;

		if ( this.toneMapped === false ) data.toneMapped = false;

		if ( JSON.stringify( this.userData ) !== '{}' ) data.userData = this.userData;

		// TODO: Copied from Object3D.toJSON

		function extractFromCache( cache ) {

			const values = [];

			for ( const key in cache ) {

				const data = cache[ key ];
				delete data.metadata;
				values.push( data );

			}

			return values;

		}

		if ( isRootObject ) {

			const textures = extractFromCache( meta.textures );
			const images = extractFromCache( meta.images );

			if ( textures.length > 0 ) data.textures = textures;
			if ( images.length > 0 ) data.images = images;

		}

		return data;

	}

	clone() {

		return new this.constructor().copy( this );

	}

	copy( source ) {

		this.name = source.name;

		this.fog = source.fog;

		this.blending = source.blending;
		this.side = source.side;
		this.vertexColors = source.vertexColors;

		this.opacity = source.opacity;
		this.transparent = source.transparent;

		this.blendSrc = source.blendSrc;
		this.blendDst = source.blendDst;
		this.blendEquation = source.blendEquation;
		this.blendSrcAlpha = source.blendSrcAlpha;
		this.blendDstAlpha = source.blendDstAlpha;
		this.blendEquationAlpha = source.blendEquationAlpha;

		this.depthFunc = source.depthFunc;
		this.depthTest = source.depthTest;
		this.depthWrite = source.depthWrite;

		this.stencilWriteMask = source.stencilWriteMask;
		this.stencilFunc = source.stencilFunc;
		this.stencilRef = source.stencilRef;
		this.stencilFuncMask = source.stencilFuncMask;
		this.stencilFail = source.stencilFail;
		this.stencilZFail = source.stencilZFail;
		this.stencilZPass = source.stencilZPass;
		this.stencilWrite = source.stencilWrite;

		const srcPlanes = source.clippingPlanes;
		let dstPlanes = null;

		if ( srcPlanes !== null ) {

			const n = srcPlanes.length;
			dstPlanes = new Array( n );

			for ( let i = 0; i !== n; ++ i ) {

				dstPlanes[ i ] = srcPlanes[ i ].clone();

			}

		}

		this.clippingPlanes = dstPlanes;
		this.clipIntersection = source.clipIntersection;
		this.clipShadows = source.clipShadows;

		this.shadowSide = source.shadowSide;

		this.colorWrite = source.colorWrite;

		this.precision = source.precision;

		this.polygonOffset = source.polygonOffset;
		this.polygonOffsetFactor = source.polygonOffsetFactor;
		this.polygonOffsetUnits = source.polygonOffsetUnits;

		this.dithering = source.dithering;

		this.alphaTest = source.alphaTest;
		this.alphaToCoverage = source.alphaToCoverage;
		this.premultipliedAlpha = source.premultipliedAlpha;

		this.visible = source.visible;

		this.toneMapped = source.toneMapped;

		this.userData = JSON.parse( JSON.stringify( source.userData ) );

		return this;

	}

	dispose() {

		this.dispatchEvent( { type: 'dispose' } );

	}

	set needsUpdate( value ) {

		if ( value === true ) this.version ++;

	}

}

Material.prototype.isMaterial = true;

Material.fromType = function ( /*type*/ ) {

	// TODO: Behavior added in Materials.js

	return null;

};

/**
 * parameters = {
 *  color: <hex>,
 *  opacity: <float>,
 *  map: new THREE.Texture( <Image> ),
 *
 *  lightMap: new THREE.Texture( <Image> ),
 *  lightMapIntensity: <float>
 *
 *  aoMap: new THREE.Texture( <Image> ),
 *  aoMapIntensity: <float>
 *
 *  specularMap: new THREE.Texture( <Image> ),
 *
 *  alphaMap: new THREE.Texture( <Image> ),
 *
 *  envMap: new THREE.CubeTexture( [posx, negx, posy, negy, posz, negz] ),
 *  combine: THREE.Multiply,
 *  reflectivity: <float>,
 *  refractionRatio: <float>,
 *
 *  depthTest: <bool>,
 *  depthWrite: <bool>,
 *
 *  wireframe: <boolean>,
 *  wireframeLinewidth: <float>,
 * }
 */

class MeshBasicMaterial extends Material {

	constructor( parameters ) {

		super();

		this.type = 'MeshBasicMaterial';

		this.color = new Color( 0xffffff ); // emissive

		this.map = null;

		this.lightMap = null;
		this.lightMapIntensity = 1.0;

		this.aoMap = null;
		this.aoMapIntensity = 1.0;

		this.specularMap = null;

		this.alphaMap = null;

		this.envMap = null;
		this.combine = MultiplyOperation;
		this.reflectivity = 1;
		this.refractionRatio = 0.98;

		this.wireframe = false;
		this.wireframeLinewidth = 1;
		this.wireframeLinecap = 'round';
		this.wireframeLinejoin = 'round';

		this.setValues( parameters );

	}

	copy( source ) {

		super.copy( source );

		this.color.copy( source.color );

		this.map = source.map;

		this.lightMap = source.lightMap;
		this.lightMapIntensity = source.lightMapIntensity;

		this.aoMap = source.aoMap;
		this.aoMapIntensity = source.aoMapIntensity;

		this.specularMap = source.specularMap;

		this.alphaMap = source.alphaMap;

		this.envMap = source.envMap;
		this.combine = source.combine;
		this.reflectivity = source.reflectivity;
		this.refractionRatio = source.refractionRatio;

		this.wireframe = source.wireframe;
		this.wireframeLinewidth = source.wireframeLinewidth;
		this.wireframeLinecap = source.wireframeLinecap;
		this.wireframeLinejoin = source.wireframeLinejoin;

		return this;

	}

}

MeshBasicMaterial.prototype.isMeshBasicMaterial = true;

const _vector$9 = /*@__PURE__*/ new Vector3();
const _vector2$1 = /*@__PURE__*/ new Vector2();

class BufferAttribute {

	constructor( array, itemSize, normalized ) {

		if ( Array.isArray( array ) ) {

			throw new TypeError( 'THREE.BufferAttribute: array should be a Typed Array.' );

		}

		this.name = '';

		this.array = array;
		this.itemSize = itemSize;
		this.count = array !== undefined ? array.length / itemSize : 0;
		this.normalized = normalized === true;

		this.usage = StaticDrawUsage;
		this.updateRange = { offset: 0, count: - 1 };

		this.version = 0;

	}

	onUploadCallback() {}

	set needsUpdate( value ) {

		if ( value === true ) this.version ++;

	}

	setUsage( value ) {

		this.usage = value;

		return this;

	}

	copy( source ) {

		this.name = source.name;
		this.array = new source.array.constructor( source.array );
		this.itemSize = source.itemSize;
		this.count = source.count;
		this.normalized = source.normalized;

		this.usage = source.usage;

		return this;

	}

	copyAt( index1, attribute, index2 ) {

		index1 *= this.itemSize;
		index2 *= attribute.itemSize;

		for ( let i = 0, l = this.itemSize; i < l; i ++ ) {

			this.array[ index1 + i ] = attribute.array[ index2 + i ];

		}

		return this;

	}

	copyArray( array ) {

		this.array.set( array );

		return this;

	}

	copyColorsArray( colors ) {

		const array = this.array;
		let offset = 0;

		for ( let i = 0, l = colors.length; i < l; i ++ ) {

			let color = colors[ i ];

			if ( color === undefined ) {

				console.warn( 'THREE.BufferAttribute.copyColorsArray(): color is undefined', i );
				color = new Color();

			}

			array[ offset ++ ] = color.r;
			array[ offset ++ ] = color.g;
			array[ offset ++ ] = color.b;

		}

		return this;

	}

	copyVector2sArray( vectors ) {

		const array = this.array;
		let offset = 0;

		for ( let i = 0, l = vectors.length; i < l; i ++ ) {

			let vector = vectors[ i ];

			if ( vector === undefined ) {

				console.warn( 'THREE.BufferAttribute.copyVector2sArray(): vector is undefined', i );
				vector = new Vector2();

			}

			array[ offset ++ ] = vector.x;
			array[ offset ++ ] = vector.y;

		}

		return this;

	}

	copyVector3sArray( vectors ) {

		const array = this.array;
		let offset = 0;

		for ( let i = 0, l = vectors.length; i < l; i ++ ) {

			let vector = vectors[ i ];

			if ( vector === undefined ) {

				console.warn( 'THREE.BufferAttribute.copyVector3sArray(): vector is undefined', i );
				vector = new Vector3();

			}

			array[ offset ++ ] = vector.x;
			array[ offset ++ ] = vector.y;
			array[ offset ++ ] = vector.z;

		}

		return this;

	}

	copyVector4sArray( vectors ) {

		const array = this.array;
		let offset = 0;

		for ( let i = 0, l = vectors.length; i < l; i ++ ) {

			let vector = vectors[ i ];

			if ( vector === undefined ) {

				console.warn( 'THREE.BufferAttribute.copyVector4sArray(): vector is undefined', i );
				vector = new Vector4$1();

			}

			array[ offset ++ ] = vector.x;
			array[ offset ++ ] = vector.y;
			array[ offset ++ ] = vector.z;
			array[ offset ++ ] = vector.w;

		}

		return this;

	}

	applyMatrix3( m ) {

		if ( this.itemSize === 2 ) {

			for ( let i = 0, l = this.count; i < l; i ++ ) {

				_vector2$1.fromBufferAttribute( this, i );
				_vector2$1.applyMatrix3( m );

				this.setXY( i, _vector2$1.x, _vector2$1.y );

			}

		} else if ( this.itemSize === 3 ) {

			for ( let i = 0, l = this.count; i < l; i ++ ) {

				_vector$9.fromBufferAttribute( this, i );
				_vector$9.applyMatrix3( m );

				this.setXYZ( i, _vector$9.x, _vector$9.y, _vector$9.z );

			}

		}

		return this;

	}

	applyMatrix4( m ) {

		for ( let i = 0, l = this.count; i < l; i ++ ) {

			_vector$9.x = this.getX( i );
			_vector$9.y = this.getY( i );
			_vector$9.z = this.getZ( i );

			_vector$9.applyMatrix4( m );

			this.setXYZ( i, _vector$9.x, _vector$9.y, _vector$9.z );

		}

		return this;

	}

	applyNormalMatrix( m ) {

		for ( let i = 0, l = this.count; i < l; i ++ ) {

			_vector$9.x = this.getX( i );
			_vector$9.y = this.getY( i );
			_vector$9.z = this.getZ( i );

			_vector$9.applyNormalMatrix( m );

			this.setXYZ( i, _vector$9.x, _vector$9.y, _vector$9.z );

		}

		return this;

	}

	transformDirection( m ) {

		for ( let i = 0, l = this.count; i < l; i ++ ) {

			_vector$9.x = this.getX( i );
			_vector$9.y = this.getY( i );
			_vector$9.z = this.getZ( i );

			_vector$9.transformDirection( m );

			this.setXYZ( i, _vector$9.x, _vector$9.y, _vector$9.z );

		}

		return this;

	}

	set( value, offset = 0 ) {

		this.array.set( value, offset );

		return this;

	}

	getX( index ) {

		return this.array[ index * this.itemSize ];

	}

	setX( index, x ) {

		this.array[ index * this.itemSize ] = x;

		return this;

	}

	getY( index ) {

		return this.array[ index * this.itemSize + 1 ];

	}

	setY( index, y ) {

		this.array[ index * this.itemSize + 1 ] = y;

		return this;

	}

	getZ( index ) {

		return this.array[ index * this.itemSize + 2 ];

	}

	setZ( index, z ) {

		this.array[ index * this.itemSize + 2 ] = z;

		return this;

	}

	getW( index ) {

		return this.array[ index * this.itemSize + 3 ];

	}

	setW( index, w ) {

		this.array[ index * this.itemSize + 3 ] = w;

		return this;

	}

	setXY( index, x, y ) {

		index *= this.itemSize;

		this.array[ index + 0 ] = x;
		this.array[ index + 1 ] = y;

		return this;

	}

	setXYZ( index, x, y, z ) {

		index *= this.itemSize;

		this.array[ index + 0 ] = x;
		this.array[ index + 1 ] = y;
		this.array[ index + 2 ] = z;

		return this;

	}

	setXYZW( index, x, y, z, w ) {

		index *= this.itemSize;

		this.array[ index + 0 ] = x;
		this.array[ index + 1 ] = y;
		this.array[ index + 2 ] = z;
		this.array[ index + 3 ] = w;

		return this;

	}

	onUpload( callback ) {

		this.onUploadCallback = callback;

		return this;

	}

	clone() {

		return new this.constructor( this.array, this.itemSize ).copy( this );

	}

	toJSON() {

		const data = {
			itemSize: this.itemSize,
			type: this.array.constructor.name,
			array: Array.prototype.slice.call( this.array ),
			normalized: this.normalized
		};

		if ( this.name !== '' ) data.name = this.name;
		if ( this.usage !== StaticDrawUsage ) data.usage = this.usage;
		if ( this.updateRange.offset !== 0 || this.updateRange.count !== - 1 ) data.updateRange = this.updateRange;

		return data;

	}

}

BufferAttribute.prototype.isBufferAttribute = true;

//

class Int8BufferAttribute extends BufferAttribute {

	constructor( array, itemSize, normalized ) {

		super( new Int8Array( array ), itemSize, normalized );

	}

}

class Uint8BufferAttribute extends BufferAttribute {

	constructor( array, itemSize, normalized ) {

		super( new Uint8Array( array ), itemSize, normalized );

	}

}

class Uint8ClampedBufferAttribute extends BufferAttribute {

	constructor( array, itemSize, normalized ) {

		super( new Uint8ClampedArray( array ), itemSize, normalized );

	}

}

class Int16BufferAttribute extends BufferAttribute {

	constructor( array, itemSize, normalized ) {

		super( new Int16Array( array ), itemSize, normalized );

	}

}

class Uint16BufferAttribute extends BufferAttribute {

	constructor( array, itemSize, normalized ) {

		super( new Uint16Array( array ), itemSize, normalized );

	}

}

class Int32BufferAttribute extends BufferAttribute {

	constructor( array, itemSize, normalized ) {

		super( new Int32Array( array ), itemSize, normalized );

	}

}

class Uint32BufferAttribute extends BufferAttribute {

	constructor( array, itemSize, normalized ) {

		super( new Uint32Array( array ), itemSize, normalized );

	}

}

class Float16BufferAttribute extends BufferAttribute {

	constructor( array, itemSize, normalized ) {

		super( new Uint16Array( array ), itemSize, normalized );

	}

}

Float16BufferAttribute.prototype.isFloat16BufferAttribute = true;

class Float32BufferAttribute extends BufferAttribute {

	constructor( array, itemSize, normalized ) {

		super( new Float32Array( array ), itemSize, normalized );

	}

}

class Float64BufferAttribute extends BufferAttribute {

	constructor( array, itemSize, normalized ) {

		super( new Float64Array( array ), itemSize, normalized );

	}

}

let _id$1 = 0;

const _m1 = /*@__PURE__*/ new Matrix4();
const _obj = /*@__PURE__*/ new Object3D();
const _offset = /*@__PURE__*/ new Vector3();
const _box$1 = /*@__PURE__*/ new Box3();
const _boxMorphTargets = /*@__PURE__*/ new Box3();
const _vector$8 = /*@__PURE__*/ new Vector3();

class BufferGeometry extends EventDispatcher {

	constructor() {

		super();

		Object.defineProperty( this, 'id', { value: _id$1 ++ } );

		this.uuid = generateUUID();

		this.name = '';
		this.type = 'BufferGeometry';

		this.index = null;
		this.attributes = {};

		this.morphAttributes = {};
		this.morphTargetsRelative = false;

		this.groups = [];

		this.boundingBox = null;
		this.boundingSphere = null;

		this.drawRange = { start: 0, count: Infinity };

		this.userData = {};

	}

	getIndex() {

		return this.index;

	}

	setIndex( index ) {

		if ( Array.isArray( index ) ) {

			this.index = new ( arrayNeedsUint32( index ) ? Uint32BufferAttribute : Uint16BufferAttribute )( index, 1 );

		} else {

			this.index = index;

		}

		return this;

	}

	getAttribute( name ) {

		return this.attributes[ name ];

	}

	setAttribute( name, attribute ) {

		this.attributes[ name ] = attribute;

		return this;

	}

	deleteAttribute( name ) {

		delete this.attributes[ name ];

		return this;

	}

	hasAttribute( name ) {

		return this.attributes[ name ] !== undefined;

	}

	addGroup( start, count, materialIndex = 0 ) {

		this.groups.push( {

			start: start,
			count: count,
			materialIndex: materialIndex

		} );

	}

	clearGroups() {

		this.groups = [];

	}

	setDrawRange( start, count ) {

		this.drawRange.start = start;
		this.drawRange.count = count;

	}

	applyMatrix4( matrix ) {

		const position = this.attributes.position;

		if ( position !== undefined ) {

			position.applyMatrix4( matrix );

			position.needsUpdate = true;

		}

		const normal = this.attributes.normal;

		if ( normal !== undefined ) {

			const normalMatrix = new Matrix3().getNormalMatrix( matrix );

			normal.applyNormalMatrix( normalMatrix );

			normal.needsUpdate = true;

		}

		const tangent = this.attributes.tangent;

		if ( tangent !== undefined ) {

			tangent.transformDirection( matrix );

			tangent.needsUpdate = true;

		}

		if ( this.boundingBox !== null ) {

			this.computeBoundingBox();

		}

		if ( this.boundingSphere !== null ) {

			this.computeBoundingSphere();

		}

		return this;

	}

	applyQuaternion( q ) {

		_m1.makeRotationFromQuaternion( q );

		this.applyMatrix4( _m1 );

		return this;

	}

	rotateX( angle ) {

		// rotate geometry around world x-axis

		_m1.makeRotationX( angle );

		this.applyMatrix4( _m1 );

		return this;

	}

	rotateY( angle ) {

		// rotate geometry around world y-axis

		_m1.makeRotationY( angle );

		this.applyMatrix4( _m1 );

		return this;

	}

	rotateZ( angle ) {

		// rotate geometry around world z-axis

		_m1.makeRotationZ( angle );

		this.applyMatrix4( _m1 );

		return this;

	}

	translate( x, y, z ) {

		// translate geometry

		_m1.makeTranslation( x, y, z );

		this.applyMatrix4( _m1 );

		return this;

	}

	scale( x, y, z ) {

		// scale geometry

		_m1.makeScale( x, y, z );

		this.applyMatrix4( _m1 );

		return this;

	}

	lookAt( vector ) {

		_obj.lookAt( vector );

		_obj.updateMatrix();

		this.applyMatrix4( _obj.matrix );

		return this;

	}

	center() {

		this.computeBoundingBox();

		this.boundingBox.getCenter( _offset ).negate();

		this.translate( _offset.x, _offset.y, _offset.z );

		return this;

	}

	setFromPoints( points ) {

		const position = [];

		for ( let i = 0, l = points.length; i < l; i ++ ) {

			const point = points[ i ];
			position.push( point.x, point.y, point.z || 0 );

		}

		this.setAttribute( 'position', new Float32BufferAttribute( position, 3 ) );

		return this;

	}

	computeBoundingBox() {

		if ( this.boundingBox === null ) {

			this.boundingBox = new Box3();

		}

		const position = this.attributes.position;
		const morphAttributesPosition = this.morphAttributes.position;

		if ( position && position.isGLBufferAttribute ) {

			console.error( 'THREE.BufferGeometry.computeBoundingBox(): GLBufferAttribute requires a manual bounding box. Alternatively set "mesh.frustumCulled" to "false".', this );

			this.boundingBox.set(
				new Vector3( - Infinity, - Infinity, - Infinity ),
				new Vector3( + Infinity, + Infinity, + Infinity )
			);

			return;

		}

		if ( position !== undefined ) {

			this.boundingBox.setFromBufferAttribute( position );

			// process morph attributes if present

			if ( morphAttributesPosition ) {

				for ( let i = 0, il = morphAttributesPosition.length; i < il; i ++ ) {

					const morphAttribute = morphAttributesPosition[ i ];
					_box$1.setFromBufferAttribute( morphAttribute );

					if ( this.morphTargetsRelative ) {

						_vector$8.addVectors( this.boundingBox.min, _box$1.min );
						this.boundingBox.expandByPoint( _vector$8 );

						_vector$8.addVectors( this.boundingBox.max, _box$1.max );
						this.boundingBox.expandByPoint( _vector$8 );

					} else {

						this.boundingBox.expandByPoint( _box$1.min );
						this.boundingBox.expandByPoint( _box$1.max );

					}

				}

			}

		} else {

			this.boundingBox.makeEmpty();

		}

		if ( isNaN( this.boundingBox.min.x ) || isNaN( this.boundingBox.min.y ) || isNaN( this.boundingBox.min.z ) ) {

			console.error( 'THREE.BufferGeometry.computeBoundingBox(): Computed min/max have NaN values. The "position" attribute is likely to have NaN values.', this );

		}

	}

	computeBoundingSphere() {

		if ( this.boundingSphere === null ) {

			this.boundingSphere = new Sphere();

		}

		const position = this.attributes.position;
		const morphAttributesPosition = this.morphAttributes.position;

		if ( position && position.isGLBufferAttribute ) {

			console.error( 'THREE.BufferGeometry.computeBoundingSphere(): GLBufferAttribute requires a manual bounding sphere. Alternatively set "mesh.frustumCulled" to "false".', this );

			this.boundingSphere.set( new Vector3(), Infinity );

			return;

		}

		if ( position ) {

			// first, find the center of the bounding sphere

			const center = this.boundingSphere.center;

			_box$1.setFromBufferAttribute( position );

			// process morph attributes if present

			if ( morphAttributesPosition ) {

				for ( let i = 0, il = morphAttributesPosition.length; i < il; i ++ ) {

					const morphAttribute = morphAttributesPosition[ i ];
					_boxMorphTargets.setFromBufferAttribute( morphAttribute );

					if ( this.morphTargetsRelative ) {

						_vector$8.addVectors( _box$1.min, _boxMorphTargets.min );
						_box$1.expandByPoint( _vector$8 );

						_vector$8.addVectors( _box$1.max, _boxMorphTargets.max );
						_box$1.expandByPoint( _vector$8 );

					} else {

						_box$1.expandByPoint( _boxMorphTargets.min );
						_box$1.expandByPoint( _boxMorphTargets.max );

					}

				}

			}

			_box$1.getCenter( center );

			// second, try to find a boundingSphere with a radius smaller than the
			// boundingSphere of the boundingBox: sqrt(3) smaller in the best case

			let maxRadiusSq = 0;

			for ( let i = 0, il = position.count; i < il; i ++ ) {

				_vector$8.fromBufferAttribute( position, i );

				maxRadiusSq = Math.max( maxRadiusSq, center.distanceToSquared( _vector$8 ) );

			}

			// process morph attributes if present

			if ( morphAttributesPosition ) {

				for ( let i = 0, il = morphAttributesPosition.length; i < il; i ++ ) {

					const morphAttribute = morphAttributesPosition[ i ];
					const morphTargetsRelative = this.morphTargetsRelative;

					for ( let j = 0, jl = morphAttribute.count; j < jl; j ++ ) {

						_vector$8.fromBufferAttribute( morphAttribute, j );

						if ( morphTargetsRelative ) {

							_offset.fromBufferAttribute( position, j );
							_vector$8.add( _offset );

						}

						maxRadiusSq = Math.max( maxRadiusSq, center.distanceToSquared( _vector$8 ) );

					}

				}

			}

			this.boundingSphere.radius = Math.sqrt( maxRadiusSq );

			if ( isNaN( this.boundingSphere.radius ) ) {

				console.error( 'THREE.BufferGeometry.computeBoundingSphere(): Computed radius is NaN. The "position" attribute is likely to have NaN values.', this );

			}

		}

	}

	computeTangents() {

		const index = this.index;
		const attributes = this.attributes;

		// based on http://www.terathon.com/code/tangent.html
		// (per vertex tangents)

		if ( index === null ||
			 attributes.position === undefined ||
			 attributes.normal === undefined ||
			 attributes.uv === undefined ) {

			console.error( 'THREE.BufferGeometry: .computeTangents() failed. Missing required attributes (index, position, normal or uv)' );
			return;

		}

		const indices = index.array;
		const positions = attributes.position.array;
		const normals = attributes.normal.array;
		const uvs = attributes.uv.array;

		const nVertices = positions.length / 3;

		if ( this.hasAttribute( 'tangent' ) === false ) {

			this.setAttribute( 'tangent', new BufferAttribute( new Float32Array( 4 * nVertices ), 4 ) );

		}

		const tangents = this.getAttribute( 'tangent' ).array;

		const tan1 = [], tan2 = [];

		for ( let i = 0; i < nVertices; i ++ ) {

			tan1[ i ] = new Vector3();
			tan2[ i ] = new Vector3();

		}

		const vA = new Vector3(),
			vB = new Vector3(),
			vC = new Vector3(),

			uvA = new Vector2(),
			uvB = new Vector2(),
			uvC = new Vector2(),

			sdir = new Vector3(),
			tdir = new Vector3();

		function handleTriangle( a, b, c ) {

			vA.fromArray( positions, a * 3 );
			vB.fromArray( positions, b * 3 );
			vC.fromArray( positions, c * 3 );

			uvA.fromArray( uvs, a * 2 );
			uvB.fromArray( uvs, b * 2 );
			uvC.fromArray( uvs, c * 2 );

			vB.sub( vA );
			vC.sub( vA );

			uvB.sub( uvA );
			uvC.sub( uvA );

			const r = 1.0 / ( uvB.x * uvC.y - uvC.x * uvB.y );

			// silently ignore degenerate uv triangles having coincident or colinear vertices

			if ( ! isFinite( r ) ) return;

			sdir.copy( vB ).multiplyScalar( uvC.y ).addScaledVector( vC, - uvB.y ).multiplyScalar( r );
			tdir.copy( vC ).multiplyScalar( uvB.x ).addScaledVector( vB, - uvC.x ).multiplyScalar( r );

			tan1[ a ].add( sdir );
			tan1[ b ].add( sdir );
			tan1[ c ].add( sdir );

			tan2[ a ].add( tdir );
			tan2[ b ].add( tdir );
			tan2[ c ].add( tdir );

		}

		let groups = this.groups;

		if ( groups.length === 0 ) {

			groups = [ {
				start: 0,
				count: indices.length
			} ];

		}

		for ( let i = 0, il = groups.length; i < il; ++ i ) {

			const group = groups[ i ];

			const start = group.start;
			const count = group.count;

			for ( let j = start, jl = start + count; j < jl; j += 3 ) {

				handleTriangle(
					indices[ j + 0 ],
					indices[ j + 1 ],
					indices[ j + 2 ]
				);

			}

		}

		const tmp = new Vector3(), tmp2 = new Vector3();
		const n = new Vector3(), n2 = new Vector3();

		function handleVertex( v ) {

			n.fromArray( normals, v * 3 );
			n2.copy( n );

			const t = tan1[ v ];

			// Gram-Schmidt orthogonalize

			tmp.copy( t );
			tmp.sub( n.multiplyScalar( n.dot( t ) ) ).normalize();

			// Calculate handedness

			tmp2.crossVectors( n2, t );
			const test = tmp2.dot( tan2[ v ] );
			const w = ( test < 0.0 ) ? - 1.0 : 1.0;

			tangents[ v * 4 ] = tmp.x;
			tangents[ v * 4 + 1 ] = tmp.y;
			tangents[ v * 4 + 2 ] = tmp.z;
			tangents[ v * 4 + 3 ] = w;

		}

		for ( let i = 0, il = groups.length; i < il; ++ i ) {

			const group = groups[ i ];

			const start = group.start;
			const count = group.count;

			for ( let j = start, jl = start + count; j < jl; j += 3 ) {

				handleVertex( indices[ j + 0 ] );
				handleVertex( indices[ j + 1 ] );
				handleVertex( indices[ j + 2 ] );

			}

		}

	}

	computeVertexNormals() {

		const index = this.index;
		const positionAttribute = this.getAttribute( 'position' );

		if ( positionAttribute !== undefined ) {

			let normalAttribute = this.getAttribute( 'normal' );

			if ( normalAttribute === undefined ) {

				normalAttribute = new BufferAttribute( new Float32Array( positionAttribute.count * 3 ), 3 );
				this.setAttribute( 'normal', normalAttribute );

			} else {

				// reset existing normals to zero

				for ( let i = 0, il = normalAttribute.count; i < il; i ++ ) {

					normalAttribute.setXYZ( i, 0, 0, 0 );

				}

			}

			const pA = new Vector3(), pB = new Vector3(), pC = new Vector3();
			const nA = new Vector3(), nB = new Vector3(), nC = new Vector3();
			const cb = new Vector3(), ab = new Vector3();

			// indexed elements

			if ( index ) {

				for ( let i = 0, il = index.count; i < il; i += 3 ) {

					const vA = index.getX( i + 0 );
					const vB = index.getX( i + 1 );
					const vC = index.getX( i + 2 );

					pA.fromBufferAttribute( positionAttribute, vA );
					pB.fromBufferAttribute( positionAttribute, vB );
					pC.fromBufferAttribute( positionAttribute, vC );

					cb.subVectors( pC, pB );
					ab.subVectors( pA, pB );
					cb.cross( ab );

					nA.fromBufferAttribute( normalAttribute, vA );
					nB.fromBufferAttribute( normalAttribute, vB );
					nC.fromBufferAttribute( normalAttribute, vC );

					nA.add( cb );
					nB.add( cb );
					nC.add( cb );

					normalAttribute.setXYZ( vA, nA.x, nA.y, nA.z );
					normalAttribute.setXYZ( vB, nB.x, nB.y, nB.z );
					normalAttribute.setXYZ( vC, nC.x, nC.y, nC.z );

				}

			} else {

				// non-indexed elements (unconnected triangle soup)

				for ( let i = 0, il = positionAttribute.count; i < il; i += 3 ) {

					pA.fromBufferAttribute( positionAttribute, i + 0 );
					pB.fromBufferAttribute( positionAttribute, i + 1 );
					pC.fromBufferAttribute( positionAttribute, i + 2 );

					cb.subVectors( pC, pB );
					ab.subVectors( pA, pB );
					cb.cross( ab );

					normalAttribute.setXYZ( i + 0, cb.x, cb.y, cb.z );
					normalAttribute.setXYZ( i + 1, cb.x, cb.y, cb.z );
					normalAttribute.setXYZ( i + 2, cb.x, cb.y, cb.z );

				}

			}

			this.normalizeNormals();

			normalAttribute.needsUpdate = true;

		}

	}

	merge( geometry, offset ) {

		if ( ! ( geometry && geometry.isBufferGeometry ) ) {

			console.error( 'THREE.BufferGeometry.merge(): geometry not an instance of THREE.BufferGeometry.', geometry );
			return;

		}

		if ( offset === undefined ) {

			offset = 0;

			console.warn(
				'THREE.BufferGeometry.merge(): Overwriting original geometry, starting at offset=0. '
				+ 'Use BufferGeometryUtils.mergeBufferGeometries() for lossless merge.'
			);

		}

		const attributes = this.attributes;

		for ( const key in attributes ) {

			if ( geometry.attributes[ key ] === undefined ) continue;

			const attribute1 = attributes[ key ];
			const attributeArray1 = attribute1.array;

			const attribute2 = geometry.attributes[ key ];
			const attributeArray2 = attribute2.array;

			const attributeOffset = attribute2.itemSize * offset;
			const length = Math.min( attributeArray2.length, attributeArray1.length - attributeOffset );

			for ( let i = 0, j = attributeOffset; i < length; i ++, j ++ ) {

				attributeArray1[ j ] = attributeArray2[ i ];

			}

		}

		return this;

	}

	normalizeNormals() {

		const normals = this.attributes.normal;

		for ( let i = 0, il = normals.count; i < il; i ++ ) {

			_vector$8.fromBufferAttribute( normals, i );

			_vector$8.normalize();

			normals.setXYZ( i, _vector$8.x, _vector$8.y, _vector$8.z );

		}

	}

	toNonIndexed() {

		function convertBufferAttribute( attribute, indices ) {

			const array = attribute.array;
			const itemSize = attribute.itemSize;
			const normalized = attribute.normalized;

			const array2 = new array.constructor( indices.length * itemSize );

			let index = 0, index2 = 0;

			for ( let i = 0, l = indices.length; i < l; i ++ ) {

				if ( attribute.isInterleavedBufferAttribute ) {

					index = indices[ i ] * attribute.data.stride + attribute.offset;

				} else {

					index = indices[ i ] * itemSize;

				}

				for ( let j = 0; j < itemSize; j ++ ) {

					array2[ index2 ++ ] = array[ index ++ ];

				}

			}

			return new BufferAttribute( array2, itemSize, normalized );

		}

		//

		if ( this.index === null ) {

			console.warn( 'THREE.BufferGeometry.toNonIndexed(): BufferGeometry is already non-indexed.' );
			return this;

		}

		const geometry2 = new BufferGeometry();

		const indices = this.index.array;
		const attributes = this.attributes;

		// attributes

		for ( const name in attributes ) {

			const attribute = attributes[ name ];

			const newAttribute = convertBufferAttribute( attribute, indices );

			geometry2.setAttribute( name, newAttribute );

		}

		// morph attributes

		const morphAttributes = this.morphAttributes;

		for ( const name in morphAttributes ) {

			const morphArray = [];
			const morphAttribute = morphAttributes[ name ]; // morphAttribute: array of Float32BufferAttributes

			for ( let i = 0, il = morphAttribute.length; i < il; i ++ ) {

				const attribute = morphAttribute[ i ];

				const newAttribute = convertBufferAttribute( attribute, indices );

				morphArray.push( newAttribute );

			}

			geometry2.morphAttributes[ name ] = morphArray;

		}

		geometry2.morphTargetsRelative = this.morphTargetsRelative;

		// groups

		const groups = this.groups;

		for ( let i = 0, l = groups.length; i < l; i ++ ) {

			const group = groups[ i ];
			geometry2.addGroup( group.start, group.count, group.materialIndex );

		}

		return geometry2;

	}

	toJSON() {

		const data = {
			metadata: {
				version: 4.5,
				type: 'BufferGeometry',
				generator: 'BufferGeometry.toJSON'
			}
		};

		// standard BufferGeometry serialization

		data.uuid = this.uuid;
		data.type = this.type;
		if ( this.name !== '' ) data.name = this.name;
		if ( Object.keys( this.userData ).length > 0 ) data.userData = this.userData;

		if ( this.parameters !== undefined ) {

			const parameters = this.parameters;

			for ( const key in parameters ) {

				if ( parameters[ key ] !== undefined ) data[ key ] = parameters[ key ];

			}

			return data;

		}

		// for simplicity the code assumes attributes are not shared across geometries, see #15811

		data.data = { attributes: {} };

		const index = this.index;

		if ( index !== null ) {

			data.data.index = {
				type: index.array.constructor.name,
				array: Array.prototype.slice.call( index.array )
			};

		}

		const attributes = this.attributes;

		for ( const key in attributes ) {

			const attribute = attributes[ key ];

			data.data.attributes[ key ] = attribute.toJSON( data.data );

		}

		const morphAttributes = {};
		let hasMorphAttributes = false;

		for ( const key in this.morphAttributes ) {

			const attributeArray = this.morphAttributes[ key ];

			const array = [];

			for ( let i = 0, il = attributeArray.length; i < il; i ++ ) {

				const attribute = attributeArray[ i ];

				array.push( attribute.toJSON( data.data ) );

			}

			if ( array.length > 0 ) {

				morphAttributes[ key ] = array;

				hasMorphAttributes = true;

			}

		}

		if ( hasMorphAttributes ) {

			data.data.morphAttributes = morphAttributes;
			data.data.morphTargetsRelative = this.morphTargetsRelative;

		}

		const groups = this.groups;

		if ( groups.length > 0 ) {

			data.data.groups = JSON.parse( JSON.stringify( groups ) );

		}

		const boundingSphere = this.boundingSphere;

		if ( boundingSphere !== null ) {

			data.data.boundingSphere = {
				center: boundingSphere.center.toArray(),
				radius: boundingSphere.radius
			};

		}

		return data;

	}

	clone() {

		 return new this.constructor().copy( this );

	}

	copy( source ) {

		// reset

		this.index = null;
		this.attributes = {};
		this.morphAttributes = {};
		this.groups = [];
		this.boundingBox = null;
		this.boundingSphere = null;

		// used for storing cloned, shared data

		const data = {};

		// name

		this.name = source.name;

		// index

		const index = source.index;

		if ( index !== null ) {

			this.setIndex( index.clone( data ) );

		}

		// attributes

		const attributes = source.attributes;

		for ( const name in attributes ) {

			const attribute = attributes[ name ];
			this.setAttribute( name, attribute.clone( data ) );

		}

		// morph attributes

		const morphAttributes = source.morphAttributes;

		for ( const name in morphAttributes ) {

			const array = [];
			const morphAttribute = morphAttributes[ name ]; // morphAttribute: array of Float32BufferAttributes

			for ( let i = 0, l = morphAttribute.length; i < l; i ++ ) {

				array.push( morphAttribute[ i ].clone( data ) );

			}

			this.morphAttributes[ name ] = array;

		}

		this.morphTargetsRelative = source.morphTargetsRelative;

		// groups

		const groups = source.groups;

		for ( let i = 0, l = groups.length; i < l; i ++ ) {

			const group = groups[ i ];
			this.addGroup( group.start, group.count, group.materialIndex );

		}

		// bounding box

		const boundingBox = source.boundingBox;

		if ( boundingBox !== null ) {

			this.boundingBox = boundingBox.clone();

		}

		// bounding sphere

		const boundingSphere = source.boundingSphere;

		if ( boundingSphere !== null ) {

			this.boundingSphere = boundingSphere.clone();

		}

		// draw range

		this.drawRange.start = source.drawRange.start;
		this.drawRange.count = source.drawRange.count;

		// user data

		this.userData = source.userData;

		// geometry generator parameters

		if ( source.parameters !== undefined ) this.parameters = Object.assign( {}, source.parameters );

		return this;

	}

	dispose() {

		this.dispatchEvent( { type: 'dispose' } );

	}

}

BufferGeometry.prototype.isBufferGeometry = true;

const _inverseMatrix$2 = /*@__PURE__*/ new Matrix4();
const _ray$2 = /*@__PURE__*/ new Ray();
const _sphere$3 = /*@__PURE__*/ new Sphere();

const _vA$1 = /*@__PURE__*/ new Vector3();
const _vB$1 = /*@__PURE__*/ new Vector3();
const _vC$1 = /*@__PURE__*/ new Vector3();

const _tempA = /*@__PURE__*/ new Vector3();
const _tempB = /*@__PURE__*/ new Vector3();
const _tempC = /*@__PURE__*/ new Vector3();

const _morphA = /*@__PURE__*/ new Vector3();
const _morphB = /*@__PURE__*/ new Vector3();
const _morphC = /*@__PURE__*/ new Vector3();

const _uvA$1 = /*@__PURE__*/ new Vector2();
const _uvB$1 = /*@__PURE__*/ new Vector2();
const _uvC$1 = /*@__PURE__*/ new Vector2();

const _intersectionPoint = /*@__PURE__*/ new Vector3();
const _intersectionPointWorld = /*@__PURE__*/ new Vector3();

class Mesh extends Object3D {

	constructor( geometry = new BufferGeometry(), material = new MeshBasicMaterial() ) {

		super();

		this.type = 'Mesh';

		this.geometry = geometry;
		this.material = material;

		this.updateMorphTargets();

	}

	copy( source ) {

		super.copy( source );

		if ( source.morphTargetInfluences !== undefined ) {

			this.morphTargetInfluences = source.morphTargetInfluences.slice();

		}

		if ( source.morphTargetDictionary !== undefined ) {

			this.morphTargetDictionary = Object.assign( {}, source.morphTargetDictionary );

		}

		this.material = source.material;
		this.geometry = source.geometry;

		return this;

	}

	updateMorphTargets() {

		const geometry = this.geometry;

		if ( geometry.isBufferGeometry ) {

			const morphAttributes = geometry.morphAttributes;
			const keys = Object.keys( morphAttributes );

			if ( keys.length > 0 ) {

				const morphAttribute = morphAttributes[ keys[ 0 ] ];

				if ( morphAttribute !== undefined ) {

					this.morphTargetInfluences = [];
					this.morphTargetDictionary = {};

					for ( let m = 0, ml = morphAttribute.length; m < ml; m ++ ) {

						const name = morphAttribute[ m ].name || String( m );

						this.morphTargetInfluences.push( 0 );
						this.morphTargetDictionary[ name ] = m;

					}

				}

			}

		} else {

			const morphTargets = geometry.morphTargets;

			if ( morphTargets !== undefined && morphTargets.length > 0 ) {

				console.error( 'THREE.Mesh.updateMorphTargets() no longer supports THREE.Geometry. Use THREE.BufferGeometry instead.' );

			}

		}

	}

	raycast( raycaster, intersects ) {

		const geometry = this.geometry;
		const material = this.material;
		const matrixWorld = this.matrixWorld;

		if ( material === undefined ) return;

		// Checking boundingSphere distance to ray

		if ( geometry.boundingSphere === null ) geometry.computeBoundingSphere();

		_sphere$3.copy( geometry.boundingSphere );
		_sphere$3.applyMatrix4( matrixWorld );

		if ( raycaster.ray.intersectsSphere( _sphere$3 ) === false ) return;

		//

		_inverseMatrix$2.copy( matrixWorld ).invert();
		_ray$2.copy( raycaster.ray ).applyMatrix4( _inverseMatrix$2 );

		// Check boundingBox before continuing

		if ( geometry.boundingBox !== null ) {

			if ( _ray$2.intersectsBox( geometry.boundingBox ) === false ) return;

		}

		let intersection;

		if ( geometry.isBufferGeometry ) {

			const index = geometry.index;
			const position = geometry.attributes.position;
			const morphPosition = geometry.morphAttributes.position;
			const morphTargetsRelative = geometry.morphTargetsRelative;
			const uv = geometry.attributes.uv;
			const uv2 = geometry.attributes.uv2;
			const groups = geometry.groups;
			const drawRange = geometry.drawRange;

			if ( index !== null ) {

				// indexed buffer geometry

				if ( Array.isArray( material ) ) {

					for ( let i = 0, il = groups.length; i < il; i ++ ) {

						const group = groups[ i ];
						const groupMaterial = material[ group.materialIndex ];

						const start = Math.max( group.start, drawRange.start );
						const end = Math.min( index.count, Math.min( ( group.start + group.count ), ( drawRange.start + drawRange.count ) ) );

						for ( let j = start, jl = end; j < jl; j += 3 ) {

							const a = index.getX( j );
							const b = index.getX( j + 1 );
							const c = index.getX( j + 2 );

							intersection = checkBufferGeometryIntersection( this, groupMaterial, raycaster, _ray$2, position, morphPosition, morphTargetsRelative, uv, uv2, a, b, c );

							if ( intersection ) {

								intersection.faceIndex = Math.floor( j / 3 ); // triangle number in indexed buffer semantics
								intersection.face.materialIndex = group.materialIndex;
								intersects.push( intersection );

							}

						}

					}

				} else {

					const start = Math.max( 0, drawRange.start );
					const end = Math.min( index.count, ( drawRange.start + drawRange.count ) );

					for ( let i = start, il = end; i < il; i += 3 ) {

						const a = index.getX( i );
						const b = index.getX( i + 1 );
						const c = index.getX( i + 2 );

						intersection = checkBufferGeometryIntersection( this, material, raycaster, _ray$2, position, morphPosition, morphTargetsRelative, uv, uv2, a, b, c );

						if ( intersection ) {

							intersection.faceIndex = Math.floor( i / 3 ); // triangle number in indexed buffer semantics
							intersects.push( intersection );

						}

					}

				}

			} else if ( position !== undefined ) {

				// non-indexed buffer geometry

				if ( Array.isArray( material ) ) {

					for ( let i = 0, il = groups.length; i < il; i ++ ) {

						const group = groups[ i ];
						const groupMaterial = material[ group.materialIndex ];

						const start = Math.max( group.start, drawRange.start );
						const end = Math.min( position.count, Math.min( ( group.start + group.count ), ( drawRange.start + drawRange.count ) ) );

						for ( let j = start, jl = end; j < jl; j += 3 ) {

							const a = j;
							const b = j + 1;
							const c = j + 2;

							intersection = checkBufferGeometryIntersection( this, groupMaterial, raycaster, _ray$2, position, morphPosition, morphTargetsRelative, uv, uv2, a, b, c );

							if ( intersection ) {

								intersection.faceIndex = Math.floor( j / 3 ); // triangle number in non-indexed buffer semantics
								intersection.face.materialIndex = group.materialIndex;
								intersects.push( intersection );

							}

						}

					}

				} else {

					const start = Math.max( 0, drawRange.start );
					const end = Math.min( position.count, ( drawRange.start + drawRange.count ) );

					for ( let i = start, il = end; i < il; i += 3 ) {

						const a = i;
						const b = i + 1;
						const c = i + 2;

						intersection = checkBufferGeometryIntersection( this, material, raycaster, _ray$2, position, morphPosition, morphTargetsRelative, uv, uv2, a, b, c );

						if ( intersection ) {

							intersection.faceIndex = Math.floor( i / 3 ); // triangle number in non-indexed buffer semantics
							intersects.push( intersection );

						}

					}

				}

			}

		} else if ( geometry.isGeometry ) {

			console.error( 'THREE.Mesh.raycast() no longer supports THREE.Geometry. Use THREE.BufferGeometry instead.' );

		}

	}

}

Mesh.prototype.isMesh = true;

function checkIntersection( object, material, raycaster, ray, pA, pB, pC, point ) {

	let intersect;

	if ( material.side === BackSide ) {

		intersect = ray.intersectTriangle( pC, pB, pA, true, point );

	} else {

		intersect = ray.intersectTriangle( pA, pB, pC, material.side !== DoubleSide, point );

	}

	if ( intersect === null ) return null;

	_intersectionPointWorld.copy( point );
	_intersectionPointWorld.applyMatrix4( object.matrixWorld );

	const distance = raycaster.ray.origin.distanceTo( _intersectionPointWorld );

	if ( distance < raycaster.near || distance > raycaster.far ) return null;

	return {
		distance: distance,
		point: _intersectionPointWorld.clone(),
		object: object
	};

}

function checkBufferGeometryIntersection( object, material, raycaster, ray, position, morphPosition, morphTargetsRelative, uv, uv2, a, b, c ) {

	_vA$1.fromBufferAttribute( position, a );
	_vB$1.fromBufferAttribute( position, b );
	_vC$1.fromBufferAttribute( position, c );

	const morphInfluences = object.morphTargetInfluences;

	if ( morphPosition && morphInfluences ) {

		_morphA.set( 0, 0, 0 );
		_morphB.set( 0, 0, 0 );
		_morphC.set( 0, 0, 0 );

		for ( let i = 0, il = morphPosition.length; i < il; i ++ ) {

			const influence = morphInfluences[ i ];
			const morphAttribute = morphPosition[ i ];

			if ( influence === 0 ) continue;

			_tempA.fromBufferAttribute( morphAttribute, a );
			_tempB.fromBufferAttribute( morphAttribute, b );
			_tempC.fromBufferAttribute( morphAttribute, c );

			if ( morphTargetsRelative ) {

				_morphA.addScaledVector( _tempA, influence );
				_morphB.addScaledVector( _tempB, influence );
				_morphC.addScaledVector( _tempC, influence );

			} else {

				_morphA.addScaledVector( _tempA.sub( _vA$1 ), influence );
				_morphB.addScaledVector( _tempB.sub( _vB$1 ), influence );
				_morphC.addScaledVector( _tempC.sub( _vC$1 ), influence );

			}

		}

		_vA$1.add( _morphA );
		_vB$1.add( _morphB );
		_vC$1.add( _morphC );

	}

	if ( object.isSkinnedMesh ) {

		object.boneTransform( a, _vA$1 );
		object.boneTransform( b, _vB$1 );
		object.boneTransform( c, _vC$1 );

	}

	const intersection = checkIntersection( object, material, raycaster, ray, _vA$1, _vB$1, _vC$1, _intersectionPoint );

	if ( intersection ) {

		if ( uv ) {

			_uvA$1.fromBufferAttribute( uv, a );
			_uvB$1.fromBufferAttribute( uv, b );
			_uvC$1.fromBufferAttribute( uv, c );

			intersection.uv = Triangle.getUV( _intersectionPoint, _vA$1, _vB$1, _vC$1, _uvA$1, _uvB$1, _uvC$1, new Vector2() );

		}

		if ( uv2 ) {

			_uvA$1.fromBufferAttribute( uv2, a );
			_uvB$1.fromBufferAttribute( uv2, b );
			_uvC$1.fromBufferAttribute( uv2, c );

			intersection.uv2 = Triangle.getUV( _intersectionPoint, _vA$1, _vB$1, _vC$1, _uvA$1, _uvB$1, _uvC$1, new Vector2() );

		}

		const face = {
			a: a,
			b: b,
			c: c,
			normal: new Vector3(),
			materialIndex: 0
		};

		Triangle.getNormal( _vA$1, _vB$1, _vC$1, face.normal );

		intersection.face = face;

	}

	return intersection;

}

class BoxGeometry extends BufferGeometry {

	constructor( width = 1, height = 1, depth = 1, widthSegments = 1, heightSegments = 1, depthSegments = 1 ) {

		super();

		this.type = 'BoxGeometry';

		this.parameters = {
			width: width,
			height: height,
			depth: depth,
			widthSegments: widthSegments,
			heightSegments: heightSegments,
			depthSegments: depthSegments
		};

		const scope = this;

		// segments

		widthSegments = Math.floor( widthSegments );
		heightSegments = Math.floor( heightSegments );
		depthSegments = Math.floor( depthSegments );

		// buffers

		const indices = [];
		const vertices = [];
		const normals = [];
		const uvs = [];

		// helper variables

		let numberOfVertices = 0;
		let groupStart = 0;

		// build each side of the box geometry

		buildPlane( 'z', 'y', 'x', - 1, - 1, depth, height, width, depthSegments, heightSegments, 0 ); // px
		buildPlane( 'z', 'y', 'x', 1, - 1, depth, height, - width, depthSegments, heightSegments, 1 ); // nx
		buildPlane( 'x', 'z', 'y', 1, 1, width, depth, height, widthSegments, depthSegments, 2 ); // py
		buildPlane( 'x', 'z', 'y', 1, - 1, width, depth, - height, widthSegments, depthSegments, 3 ); // ny
		buildPlane( 'x', 'y', 'z', 1, - 1, width, height, depth, widthSegments, heightSegments, 4 ); // pz
		buildPlane( 'x', 'y', 'z', - 1, - 1, width, height, - depth, widthSegments, heightSegments, 5 ); // nz

		// build geometry

		this.setIndex( indices );
		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );

		function buildPlane( u, v, w, udir, vdir, width, height, depth, gridX, gridY, materialIndex ) {

			const segmentWidth = width / gridX;
			const segmentHeight = height / gridY;

			const widthHalf = width / 2;
			const heightHalf = height / 2;
			const depthHalf = depth / 2;

			const gridX1 = gridX + 1;
			const gridY1 = gridY + 1;

			let vertexCounter = 0;
			let groupCount = 0;

			const vector = new Vector3();

			// generate vertices, normals and uvs

			for ( let iy = 0; iy < gridY1; iy ++ ) {

				const y = iy * segmentHeight - heightHalf;

				for ( let ix = 0; ix < gridX1; ix ++ ) {

					const x = ix * segmentWidth - widthHalf;

					// set values to correct vector component

					vector[ u ] = x * udir;
					vector[ v ] = y * vdir;
					vector[ w ] = depthHalf;

					// now apply vector to vertex buffer

					vertices.push( vector.x, vector.y, vector.z );

					// set values to correct vector component

					vector[ u ] = 0;
					vector[ v ] = 0;
					vector[ w ] = depth > 0 ? 1 : - 1;

					// now apply vector to normal buffer

					normals.push( vector.x, vector.y, vector.z );

					// uvs

					uvs.push( ix / gridX );
					uvs.push( 1 - ( iy / gridY ) );

					// counters

					vertexCounter += 1;

				}

			}

			// indices

			// 1. you need three indices to draw a single face
			// 2. a single segment consists of two faces
			// 3. so we need to generate six (2*3) indices per segment

			for ( let iy = 0; iy < gridY; iy ++ ) {

				for ( let ix = 0; ix < gridX; ix ++ ) {

					const a = numberOfVertices + ix + gridX1 * iy;
					const b = numberOfVertices + ix + gridX1 * ( iy + 1 );
					const c = numberOfVertices + ( ix + 1 ) + gridX1 * ( iy + 1 );
					const d = numberOfVertices + ( ix + 1 ) + gridX1 * iy;

					// faces

					indices.push( a, b, d );
					indices.push( b, c, d );

					// increase counter

					groupCount += 6;

				}

			}

			// add a group to the geometry. this will ensure multi material support

			scope.addGroup( groupStart, groupCount, materialIndex );

			// calculate new start value for groups

			groupStart += groupCount;

			// update total number of vertices

			numberOfVertices += vertexCounter;

		}

	}

	static fromJSON( data ) {

		return new BoxGeometry( data.width, data.height, data.depth, data.widthSegments, data.heightSegments, data.depthSegments );

	}

}

/**
 * Uniform Utilities
 */

function cloneUniforms( src ) {

	const dst = {};

	for ( const u in src ) {

		dst[ u ] = {};

		for ( const p in src[ u ] ) {

			const property = src[ u ][ p ];

			if ( property && ( property.isColor ||
				property.isMatrix3 || property.isMatrix4 ||
				property.isVector2 || property.isVector3 || property.isVector4 ||
				property.isTexture || property.isQuaternion ) ) {

				dst[ u ][ p ] = property.clone();

			} else if ( Array.isArray( property ) ) {

				dst[ u ][ p ] = property.slice();

			} else {

				dst[ u ][ p ] = property;

			}

		}

	}

	return dst;

}

function mergeUniforms( uniforms ) {

	const merged = {};

	for ( let u = 0; u < uniforms.length; u ++ ) {

		const tmp = cloneUniforms( uniforms[ u ] );

		for ( const p in tmp ) {

			merged[ p ] = tmp[ p ];

		}

	}

	return merged;

}

// Legacy

const UniformsUtils = { clone: cloneUniforms, merge: mergeUniforms };

var default_vertex = "void main() {\n\tgl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );\n}";

var default_fragment = "void main() {\n\tgl_FragColor = vec4( 1.0, 0.0, 0.0, 1.0 );\n}";

/**
 * parameters = {
 *  defines: { "label" : "value" },
 *  uniforms: { "parameter1": { value: 1.0 }, "parameter2": { value2: 2 } },
 *
 *  fragmentShader: <string>,
 *  vertexShader: <string>,
 *
 *  wireframe: <boolean>,
 *  wireframeLinewidth: <float>,
 *
 *  lights: <bool>
 * }
 */

class ShaderMaterial extends Material {

	constructor( parameters ) {

		super();

		this.type = 'ShaderMaterial';

		this.defines = {};
		this.uniforms = {};

		this.vertexShader = default_vertex;
		this.fragmentShader = default_fragment;

		this.linewidth = 1;

		this.wireframe = false;
		this.wireframeLinewidth = 1;

		this.fog = false; // set to use scene fog
		this.lights = false; // set to use scene lights
		this.clipping = false; // set to use user-defined clipping planes

		this.extensions = {
			derivatives: false, // set to use derivatives
			fragDepth: false, // set to use fragment depth values
			drawBuffers: false, // set to use draw buffers
			shaderTextureLOD: false // set to use shader texture LOD
		};

		// When rendered geometry doesn't include these attributes but the material does,
		// use these default values in WebGL. This avoids errors when buffer data is missing.
		this.defaultAttributeValues = {
			'color': [ 1, 1, 1 ],
			'uv': [ 0, 0 ],
			'uv2': [ 0, 0 ]
		};

		this.index0AttributeName = undefined;
		this.uniformsNeedUpdate = false;

		this.glslVersion = null;

		if ( parameters !== undefined ) {

			if ( parameters.attributes !== undefined ) {

				console.error( 'THREE.ShaderMaterial: attributes should now be defined in THREE.BufferGeometry instead.' );

			}

			this.setValues( parameters );

		}

	}

	copy( source ) {

		super.copy( source );

		this.fragmentShader = source.fragmentShader;
		this.vertexShader = source.vertexShader;

		this.uniforms = cloneUniforms( source.uniforms );

		this.defines = Object.assign( {}, source.defines );

		this.wireframe = source.wireframe;
		this.wireframeLinewidth = source.wireframeLinewidth;

		this.lights = source.lights;
		this.clipping = source.clipping;

		this.extensions = Object.assign( {}, source.extensions );

		this.glslVersion = source.glslVersion;

		return this;

	}

	toJSON( meta ) {

		const data = super.toJSON( meta );

		data.glslVersion = this.glslVersion;
		data.uniforms = {};

		for ( const name in this.uniforms ) {

			const uniform = this.uniforms[ name ];
			const value = uniform.value;

			if ( value && value.isTexture ) {

				data.uniforms[ name ] = {
					type: 't',
					value: value.toJSON( meta ).uuid
				};

			} else if ( value && value.isColor ) {

				data.uniforms[ name ] = {
					type: 'c',
					value: value.getHex()
				};

			} else if ( value && value.isVector2 ) {

				data.uniforms[ name ] = {
					type: 'v2',
					value: value.toArray()
				};

			} else if ( value && value.isVector3 ) {

				data.uniforms[ name ] = {
					type: 'v3',
					value: value.toArray()
				};

			} else if ( value && value.isVector4 ) {

				data.uniforms[ name ] = {
					type: 'v4',
					value: value.toArray()
				};

			} else if ( value && value.isMatrix3 ) {

				data.uniforms[ name ] = {
					type: 'm3',
					value: value.toArray()
				};

			} else if ( value && value.isMatrix4 ) {

				data.uniforms[ name ] = {
					type: 'm4',
					value: value.toArray()
				};

			} else {

				data.uniforms[ name ] = {
					value: value
				};

				// note: the array variants v2v, v3v, v4v, m4v and tv are not supported so far

			}

		}

		if ( Object.keys( this.defines ).length > 0 ) data.defines = this.defines;

		data.vertexShader = this.vertexShader;
		data.fragmentShader = this.fragmentShader;

		const extensions = {};

		for ( const key in this.extensions ) {

			if ( this.extensions[ key ] === true ) extensions[ key ] = true;

		}

		if ( Object.keys( extensions ).length > 0 ) data.extensions = extensions;

		return data;

	}

}

ShaderMaterial.prototype.isShaderMaterial = true;

class Camera extends Object3D {

	constructor() {

		super();

		this.type = 'Camera';

		this.matrixWorldInverse = new Matrix4();

		this.projectionMatrix = new Matrix4();
		this.projectionMatrixInverse = new Matrix4();

	}

	copy( source, recursive ) {

		super.copy( source, recursive );

		this.matrixWorldInverse.copy( source.matrixWorldInverse );

		this.projectionMatrix.copy( source.projectionMatrix );
		this.projectionMatrixInverse.copy( source.projectionMatrixInverse );

		return this;

	}

	getWorldDirection( target ) {

		this.updateWorldMatrix( true, false );

		const e = this.matrixWorld.elements;

		return target.set( - e[ 8 ], - e[ 9 ], - e[ 10 ] ).normalize();

	}

	updateMatrixWorld( force ) {

		super.updateMatrixWorld( force );

		this.matrixWorldInverse.copy( this.matrixWorld ).invert();

	}

	updateWorldMatrix( updateParents, updateChildren ) {

		super.updateWorldMatrix( updateParents, updateChildren );

		this.matrixWorldInverse.copy( this.matrixWorld ).invert();

	}

	clone() {

		return new this.constructor().copy( this );

	}

}

Camera.prototype.isCamera = true;

class PerspectiveCamera extends Camera {

	constructor( fov = 50, aspect = 1, near = 0.1, far = 2000 ) {

		super();

		this.type = 'PerspectiveCamera';

		this.fov = fov;
		this.zoom = 1;

		this.near = near;
		this.far = far;
		this.focus = 10;

		this.aspect = aspect;
		this.view = null;

		this.filmGauge = 35;	// width of the film (default in millimeters)
		this.filmOffset = 0;	// horizontal film offset (same unit as gauge)

		this.updateProjectionMatrix();

	}

	copy( source, recursive ) {

		super.copy( source, recursive );

		this.fov = source.fov;
		this.zoom = source.zoom;

		this.near = source.near;
		this.far = source.far;
		this.focus = source.focus;

		this.aspect = source.aspect;
		this.view = source.view === null ? null : Object.assign( {}, source.view );

		this.filmGauge = source.filmGauge;
		this.filmOffset = source.filmOffset;

		return this;

	}

	/**
	 * Sets the FOV by focal length in respect to the current .filmGauge.
	 *
	 * The default film gauge is 35, so that the focal length can be specified for
	 * a 35mm (full frame) camera.
	 *
	 * Values for focal length and film gauge must have the same unit.
	 */
	setFocalLength( focalLength ) {

		/** see {@link http://www.bobatkins.com/photography/technical/field_of_view.html} */
		const vExtentSlope = 0.5 * this.getFilmHeight() / focalLength;

		this.fov = RAD2DEG * 2 * Math.atan( vExtentSlope );
		this.updateProjectionMatrix();

	}

	/**
	 * Calculates the focal length from the current .fov and .filmGauge.
	 */
	getFocalLength() {

		const vExtentSlope = Math.tan( DEG2RAD * 0.5 * this.fov );

		return 0.5 * this.getFilmHeight() / vExtentSlope;

	}

	getEffectiveFOV() {

		return RAD2DEG * 2 * Math.atan(
			Math.tan( DEG2RAD * 0.5 * this.fov ) / this.zoom );

	}

	getFilmWidth() {

		// film not completely covered in portrait format (aspect < 1)
		return this.filmGauge * Math.min( this.aspect, 1 );

	}

	getFilmHeight() {

		// film not completely covered in landscape format (aspect > 1)
		return this.filmGauge / Math.max( this.aspect, 1 );

	}

	/**
	 * Sets an offset in a larger frustum. This is useful for multi-window or
	 * multi-monitor/multi-machine setups.
	 *
	 * For example, if you have 3x2 monitors and each monitor is 1920x1080 and
	 * the monitors are in grid like this
	 *
	 *   +---+---+---+
	 *   | A | B | C |
	 *   +---+---+---+
	 *   | D | E | F |
	 *   +---+---+---+
	 *
	 * then for each monitor you would call it like this
	 *
	 *   const w = 1920;
	 *   const h = 1080;
	 *   const fullWidth = w * 3;
	 *   const fullHeight = h * 2;
	 *
	 *   --A--
	 *   camera.setViewOffset( fullWidth, fullHeight, w * 0, h * 0, w, h );
	 *   --B--
	 *   camera.setViewOffset( fullWidth, fullHeight, w * 1, h * 0, w, h );
	 *   --C--
	 *   camera.setViewOffset( fullWidth, fullHeight, w * 2, h * 0, w, h );
	 *   --D--
	 *   camera.setViewOffset( fullWidth, fullHeight, w * 0, h * 1, w, h );
	 *   --E--
	 *   camera.setViewOffset( fullWidth, fullHeight, w * 1, h * 1, w, h );
	 *   --F--
	 *   camera.setViewOffset( fullWidth, fullHeight, w * 2, h * 1, w, h );
	 *
	 *   Note there is no reason monitors have to be the same size or in a grid.
	 */
	setViewOffset( fullWidth, fullHeight, x, y, width, height ) {

		this.aspect = fullWidth / fullHeight;

		if ( this.view === null ) {

			this.view = {
				enabled: true,
				fullWidth: 1,
				fullHeight: 1,
				offsetX: 0,
				offsetY: 0,
				width: 1,
				height: 1
			};

		}

		this.view.enabled = true;
		this.view.fullWidth = fullWidth;
		this.view.fullHeight = fullHeight;
		this.view.offsetX = x;
		this.view.offsetY = y;
		this.view.width = width;
		this.view.height = height;

		this.updateProjectionMatrix();

	}

	clearViewOffset() {

		if ( this.view !== null ) {

			this.view.enabled = false;

		}

		this.updateProjectionMatrix();

	}

	updateProjectionMatrix() {

		const near = this.near;
		let top = near * Math.tan( DEG2RAD * 0.5 * this.fov ) / this.zoom;
		let height = 2 * top;
		let width = this.aspect * height;
		let left = - 0.5 * width;
		const view = this.view;

		if ( this.view !== null && this.view.enabled ) {

			const fullWidth = view.fullWidth,
				fullHeight = view.fullHeight;

			left += view.offsetX * width / fullWidth;
			top -= view.offsetY * height / fullHeight;
			width *= view.width / fullWidth;
			height *= view.height / fullHeight;

		}

		const skew = this.filmOffset;
		if ( skew !== 0 ) left += near * skew / this.getFilmWidth();

		this.projectionMatrix.makePerspective( left, left + width, top, top - height, near, this.far );

		this.projectionMatrixInverse.copy( this.projectionMatrix ).invert();

	}

	toJSON( meta ) {

		const data = super.toJSON( meta );

		data.object.fov = this.fov;
		data.object.zoom = this.zoom;

		data.object.near = this.near;
		data.object.far = this.far;
		data.object.focus = this.focus;

		data.object.aspect = this.aspect;

		if ( this.view !== null ) data.object.view = Object.assign( {}, this.view );

		data.object.filmGauge = this.filmGauge;
		data.object.filmOffset = this.filmOffset;

		return data;

	}

}

PerspectiveCamera.prototype.isPerspectiveCamera = true;

const fov = 90, aspect = 1;

class CubeCamera extends Object3D {

	constructor( near, far, renderTarget ) {

		super();

		this.type = 'CubeCamera';

		if ( renderTarget.isWebGLCubeRenderTarget !== true ) {

			console.error( 'THREE.CubeCamera: The constructor now expects an instance of WebGLCubeRenderTarget as third parameter.' );
			return;

		}

		this.renderTarget = renderTarget;

		const cameraPX = new PerspectiveCamera( fov, aspect, near, far );
		cameraPX.layers = this.layers;
		cameraPX.up.set( 0, - 1, 0 );
		cameraPX.lookAt( new Vector3( 1, 0, 0 ) );
		this.add( cameraPX );

		const cameraNX = new PerspectiveCamera( fov, aspect, near, far );
		cameraNX.layers = this.layers;
		cameraNX.up.set( 0, - 1, 0 );
		cameraNX.lookAt( new Vector3( - 1, 0, 0 ) );
		this.add( cameraNX );

		const cameraPY = new PerspectiveCamera( fov, aspect, near, far );
		cameraPY.layers = this.layers;
		cameraPY.up.set( 0, 0, 1 );
		cameraPY.lookAt( new Vector3( 0, 1, 0 ) );
		this.add( cameraPY );

		const cameraNY = new PerspectiveCamera( fov, aspect, near, far );
		cameraNY.layers = this.layers;
		cameraNY.up.set( 0, 0, - 1 );
		cameraNY.lookAt( new Vector3( 0, - 1, 0 ) );
		this.add( cameraNY );

		const cameraPZ = new PerspectiveCamera( fov, aspect, near, far );
		cameraPZ.layers = this.layers;
		cameraPZ.up.set( 0, - 1, 0 );
		cameraPZ.lookAt( new Vector3( 0, 0, 1 ) );
		this.add( cameraPZ );

		const cameraNZ = new PerspectiveCamera( fov, aspect, near, far );
		cameraNZ.layers = this.layers;
		cameraNZ.up.set( 0, - 1, 0 );
		cameraNZ.lookAt( new Vector3( 0, 0, - 1 ) );
		this.add( cameraNZ );

	}

	update( renderer, scene ) {

		if ( this.parent === null ) this.updateMatrixWorld();

		const renderTarget = this.renderTarget;

		const [ cameraPX, cameraNX, cameraPY, cameraNY, cameraPZ, cameraNZ ] = this.children;

		const currentXrEnabled = renderer.xr.enabled;
		const currentRenderTarget = renderer.getRenderTarget();

		renderer.xr.enabled = false;

		const generateMipmaps = renderTarget.texture.generateMipmaps;

		renderTarget.texture.generateMipmaps = false;

		renderer.setRenderTarget( renderTarget, 0 );
		renderer.render( scene, cameraPX );

		renderer.setRenderTarget( renderTarget, 1 );
		renderer.render( scene, cameraNX );

		renderer.setRenderTarget( renderTarget, 2 );
		renderer.render( scene, cameraPY );

		renderer.setRenderTarget( renderTarget, 3 );
		renderer.render( scene, cameraNY );

		renderer.setRenderTarget( renderTarget, 4 );
		renderer.render( scene, cameraPZ );

		renderTarget.texture.generateMipmaps = generateMipmaps;

		renderer.setRenderTarget( renderTarget, 5 );
		renderer.render( scene, cameraNZ );

		renderer.setRenderTarget( currentRenderTarget );

		renderer.xr.enabled = currentXrEnabled;

		renderTarget.texture.needsPMREMUpdate = true;

	}

}

class CubeTexture extends Texture {

	constructor( images, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding ) {

		images = images !== undefined ? images : [];
		mapping = mapping !== undefined ? mapping : CubeReflectionMapping;

		super( images, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding );

		this.flipY = false;

	}

	get images() {

		return this.image;

	}

	set images( value ) {

		this.image = value;

	}

}

CubeTexture.prototype.isCubeTexture = true;

class WebGLCubeRenderTarget extends WebGLRenderTarget {

	constructor( size, options = {} ) {

		super( size, size, options );

		const image = { width: size, height: size, depth: 1 };
		const images = [ image, image, image, image, image, image ];

		this.texture = new CubeTexture( images, options.mapping, options.wrapS, options.wrapT, options.magFilter, options.minFilter, options.format, options.type, options.anisotropy, options.encoding );

		// By convention -- likely based on the RenderMan spec from the 1990's -- cube maps are specified by WebGL (and three.js)
		// in a coordinate system in which positive-x is to the right when looking up the positive-z axis -- in other words,
		// in a left-handed coordinate system. By continuing this convention, preexisting cube maps continued to render correctly.

		// three.js uses a right-handed coordinate system. So environment maps used in three.js appear to have px and nx swapped
		// and the flag isRenderTargetTexture controls this conversion. The flip is not required when using WebGLCubeRenderTarget.texture
		// as a cube texture (this is detected when isRenderTargetTexture is set to true for cube textures).

		this.texture.isRenderTargetTexture = true;

		this.texture.generateMipmaps = options.generateMipmaps !== undefined ? options.generateMipmaps : false;
		this.texture.minFilter = options.minFilter !== undefined ? options.minFilter : LinearFilter;

	}

	fromEquirectangularTexture( renderer, texture ) {

		this.texture.type = texture.type;
		this.texture.format = RGBAFormat; // see #18859
		this.texture.encoding = texture.encoding;

		this.texture.generateMipmaps = texture.generateMipmaps;
		this.texture.minFilter = texture.minFilter;
		this.texture.magFilter = texture.magFilter;

		const shader = {

			uniforms: {
				tEquirect: { value: null },
			},

			vertexShader: /* glsl */`

				varying vec3 vWorldDirection;

				vec3 transformDirection( in vec3 dir, in mat4 matrix ) {

					return normalize( ( matrix * vec4( dir, 0.0 ) ).xyz );

				}

				void main() {

					vWorldDirection = transformDirection( position, modelMatrix );

					#include <begin_vertex>
					#include <project_vertex>

				}
			`,

			fragmentShader: /* glsl */`

				uniform sampler2D tEquirect;

				varying vec3 vWorldDirection;

				#include <common>

				void main() {

					vec3 direction = normalize( vWorldDirection );

					vec2 sampleUV = equirectUv( direction );

					gl_FragColor = texture2D( tEquirect, sampleUV );

				}
			`
		};

		const geometry = new BoxGeometry( 5, 5, 5 );

		const material = new ShaderMaterial( {

			name: 'CubemapFromEquirect',

			uniforms: cloneUniforms( shader.uniforms ),
			vertexShader: shader.vertexShader,
			fragmentShader: shader.fragmentShader,
			side: BackSide,
			blending: NoBlending

		} );

		material.uniforms.tEquirect.value = texture;

		const mesh = new Mesh( geometry, material );

		const currentMinFilter = texture.minFilter;

		// Avoid blurred poles
		if ( texture.minFilter === LinearMipmapLinearFilter ) texture.minFilter = LinearFilter;

		const camera = new CubeCamera( 1, 10, this );
		camera.update( renderer, mesh );

		texture.minFilter = currentMinFilter;

		mesh.geometry.dispose();
		mesh.material.dispose();

		return this;

	}

	clear( renderer, color, depth, stencil ) {

		const currentRenderTarget = renderer.getRenderTarget();

		for ( let i = 0; i < 6; i ++ ) {

			renderer.setRenderTarget( this, i );

			renderer.clear( color, depth, stencil );

		}

		renderer.setRenderTarget( currentRenderTarget );

	}

}

WebGLCubeRenderTarget.prototype.isWebGLCubeRenderTarget = true;

const _vector1 = /*@__PURE__*/ new Vector3();
const _vector2 = /*@__PURE__*/ new Vector3();
const _normalMatrix = /*@__PURE__*/ new Matrix3();

class Plane {

	constructor( normal = new Vector3( 1, 0, 0 ), constant = 0 ) {

		// normal is assumed to be normalized

		this.normal = normal;
		this.constant = constant;

	}

	set( normal, constant ) {

		this.normal.copy( normal );
		this.constant = constant;

		return this;

	}

	setComponents( x, y, z, w ) {

		this.normal.set( x, y, z );
		this.constant = w;

		return this;

	}

	setFromNormalAndCoplanarPoint( normal, point ) {

		this.normal.copy( normal );
		this.constant = - point.dot( this.normal );

		return this;

	}

	setFromCoplanarPoints( a, b, c ) {

		const normal = _vector1.subVectors( c, b ).cross( _vector2.subVectors( a, b ) ).normalize();

		// Q: should an error be thrown if normal is zero (e.g. degenerate plane)?

		this.setFromNormalAndCoplanarPoint( normal, a );

		return this;

	}

	copy( plane ) {

		this.normal.copy( plane.normal );
		this.constant = plane.constant;

		return this;

	}

	normalize() {

		// Note: will lead to a divide by zero if the plane is invalid.

		const inverseNormalLength = 1.0 / this.normal.length();
		this.normal.multiplyScalar( inverseNormalLength );
		this.constant *= inverseNormalLength;

		return this;

	}

	negate() {

		this.constant *= - 1;
		this.normal.negate();

		return this;

	}

	distanceToPoint( point ) {

		return this.normal.dot( point ) + this.constant;

	}

	distanceToSphere( sphere ) {

		return this.distanceToPoint( sphere.center ) - sphere.radius;

	}

	projectPoint( point, target ) {

		return target.copy( this.normal ).multiplyScalar( - this.distanceToPoint( point ) ).add( point );

	}

	intersectLine( line, target ) {

		const direction = line.delta( _vector1 );

		const denominator = this.normal.dot( direction );

		if ( denominator === 0 ) {

			// line is coplanar, return origin
			if ( this.distanceToPoint( line.start ) === 0 ) {

				return target.copy( line.start );

			}

			// Unsure if this is the correct method to handle this case.
			return null;

		}

		const t = - ( line.start.dot( this.normal ) + this.constant ) / denominator;

		if ( t < 0 || t > 1 ) {

			return null;

		}

		return target.copy( direction ).multiplyScalar( t ).add( line.start );

	}

	intersectsLine( line ) {

		// Note: this tests if a line intersects the plane, not whether it (or its end-points) are coplanar with it.

		const startSign = this.distanceToPoint( line.start );
		const endSign = this.distanceToPoint( line.end );

		return ( startSign < 0 && endSign > 0 ) || ( endSign < 0 && startSign > 0 );

	}

	intersectsBox( box ) {

		return box.intersectsPlane( this );

	}

	intersectsSphere( sphere ) {

		return sphere.intersectsPlane( this );

	}

	coplanarPoint( target ) {

		return target.copy( this.normal ).multiplyScalar( - this.constant );

	}

	applyMatrix4( matrix, optionalNormalMatrix ) {

		const normalMatrix = optionalNormalMatrix || _normalMatrix.getNormalMatrix( matrix );

		const referencePoint = this.coplanarPoint( _vector1 ).applyMatrix4( matrix );

		const normal = this.normal.applyMatrix3( normalMatrix ).normalize();

		this.constant = - referencePoint.dot( normal );

		return this;

	}

	translate( offset ) {

		this.constant -= offset.dot( this.normal );

		return this;

	}

	equals( plane ) {

		return plane.normal.equals( this.normal ) && ( plane.constant === this.constant );

	}

	clone() {

		return new this.constructor().copy( this );

	}

}

Plane.prototype.isPlane = true;

const _sphere$2 = /*@__PURE__*/ new Sphere();
const _vector$7 = /*@__PURE__*/ new Vector3();

class Frustum {

	constructor( p0 = new Plane(), p1 = new Plane(), p2 = new Plane(), p3 = new Plane(), p4 = new Plane(), p5 = new Plane() ) {

		this.planes = [ p0, p1, p2, p3, p4, p5 ];

	}

	set( p0, p1, p2, p3, p4, p5 ) {

		const planes = this.planes;

		planes[ 0 ].copy( p0 );
		planes[ 1 ].copy( p1 );
		planes[ 2 ].copy( p2 );
		planes[ 3 ].copy( p3 );
		planes[ 4 ].copy( p4 );
		planes[ 5 ].copy( p5 );

		return this;

	}

	copy( frustum ) {

		const planes = this.planes;

		for ( let i = 0; i < 6; i ++ ) {

			planes[ i ].copy( frustum.planes[ i ] );

		}

		return this;

	}

	setFromProjectionMatrix( m ) {

		const planes = this.planes;
		const me = m.elements;
		const me0 = me[ 0 ], me1 = me[ 1 ], me2 = me[ 2 ], me3 = me[ 3 ];
		const me4 = me[ 4 ], me5 = me[ 5 ], me6 = me[ 6 ], me7 = me[ 7 ];
		const me8 = me[ 8 ], me9 = me[ 9 ], me10 = me[ 10 ], me11 = me[ 11 ];
		const me12 = me[ 12 ], me13 = me[ 13 ], me14 = me[ 14 ], me15 = me[ 15 ];

		planes[ 0 ].setComponents( me3 - me0, me7 - me4, me11 - me8, me15 - me12 ).normalize();
		planes[ 1 ].setComponents( me3 + me0, me7 + me4, me11 + me8, me15 + me12 ).normalize();
		planes[ 2 ].setComponents( me3 + me1, me7 + me5, me11 + me9, me15 + me13 ).normalize();
		planes[ 3 ].setComponents( me3 - me1, me7 - me5, me11 - me9, me15 - me13 ).normalize();
		planes[ 4 ].setComponents( me3 - me2, me7 - me6, me11 - me10, me15 - me14 ).normalize();
		planes[ 5 ].setComponents( me3 + me2, me7 + me6, me11 + me10, me15 + me14 ).normalize();

		return this;

	}

	intersectsObject( object ) {

		const geometry = object.geometry;

		if ( geometry.boundingSphere === null ) geometry.computeBoundingSphere();

		_sphere$2.copy( geometry.boundingSphere ).applyMatrix4( object.matrixWorld );

		return this.intersectsSphere( _sphere$2 );

	}

	intersectsSprite( sprite ) {

		_sphere$2.center.set( 0, 0, 0 );
		_sphere$2.radius = 0.7071067811865476;
		_sphere$2.applyMatrix4( sprite.matrixWorld );

		return this.intersectsSphere( _sphere$2 );

	}

	intersectsSphere( sphere ) {

		const planes = this.planes;
		const center = sphere.center;
		const negRadius = - sphere.radius;

		for ( let i = 0; i < 6; i ++ ) {

			const distance = planes[ i ].distanceToPoint( center );

			if ( distance < negRadius ) {

				return false;

			}

		}

		return true;

	}

	intersectsBox( box ) {

		const planes = this.planes;

		for ( let i = 0; i < 6; i ++ ) {

			const plane = planes[ i ];

			// corner at max distance

			_vector$7.x = plane.normal.x > 0 ? box.max.x : box.min.x;
			_vector$7.y = plane.normal.y > 0 ? box.max.y : box.min.y;
			_vector$7.z = plane.normal.z > 0 ? box.max.z : box.min.z;

			if ( plane.distanceToPoint( _vector$7 ) < 0 ) {

				return false;

			}

		}

		return true;

	}

	containsPoint( point ) {

		const planes = this.planes;

		for ( let i = 0; i < 6; i ++ ) {

			if ( planes[ i ].distanceToPoint( point ) < 0 ) {

				return false;

			}

		}

		return true;

	}

	clone() {

		return new this.constructor().copy( this );

	}

}

function WebGLAnimation() {

	let context = null;
	let isAnimating = false;
	let animationLoop = null;
	let requestId = null;

	function onAnimationFrame( time, frame ) {

		animationLoop( time, frame );

		requestId = context.requestAnimationFrame( onAnimationFrame );

	}

	return {

		start: function () {

			if ( isAnimating === true ) return;
			if ( animationLoop === null ) return;

			requestId = context.requestAnimationFrame( onAnimationFrame );

			isAnimating = true;

		},

		stop: function () {

			context.cancelAnimationFrame( requestId );

			isAnimating = false;

		},

		setAnimationLoop: function ( callback ) {

			animationLoop = callback;

		},

		setContext: function ( value ) {

			context = value;

		}

	};

}

function WebGLAttributes( gl, capabilities ) {

	const isWebGL2 = capabilities.isWebGL2;

	const buffers = new WeakMap();

	function createBuffer( attribute, bufferType ) {

		const array = attribute.array;
		const usage = attribute.usage;

		const buffer = gl.createBuffer();

		gl.bindBuffer( bufferType, buffer );
		gl.bufferData( bufferType, array, usage );

		attribute.onUploadCallback();

		let type;

		if ( array instanceof Float32Array ) {

			type = 5126;

		} else if ( array instanceof Uint16Array ) {

			if ( attribute.isFloat16BufferAttribute ) {

				if ( isWebGL2 ) {

					type = 5131;

				} else {

					throw new Error( 'THREE.WebGLAttributes: Usage of Float16BufferAttribute requires WebGL2.' );

				}

			} else {

				type = 5123;

			}

		} else if ( array instanceof Int16Array ) {

			type = 5122;

		} else if ( array instanceof Uint32Array ) {

			type = 5125;

		} else if ( array instanceof Int32Array ) {

			type = 5124;

		} else if ( array instanceof Int8Array ) {

			type = 5120;

		} else if ( array instanceof Uint8Array ) {

			type = 5121;

		} else if ( array instanceof Uint8ClampedArray ) {

			type = 5121;

		} else {

			throw new Error( 'THREE.WebGLAttributes: Unsupported buffer data format: ' + array );

		}

		return {
			buffer: buffer,
			type: type,
			bytesPerElement: array.BYTES_PER_ELEMENT,
			version: attribute.version
		};

	}

	function updateBuffer( buffer, attribute, bufferType ) {

		const array = attribute.array;
		const updateRange = attribute.updateRange;

		gl.bindBuffer( bufferType, buffer );

		if ( updateRange.count === - 1 ) {

			// Not using update ranges

			gl.bufferSubData( bufferType, 0, array );

		} else {

			if ( isWebGL2 ) {

				gl.bufferSubData( bufferType, updateRange.offset * array.BYTES_PER_ELEMENT,
					array, updateRange.offset, updateRange.count );

			} else {

				gl.bufferSubData( bufferType, updateRange.offset * array.BYTES_PER_ELEMENT,
					array.subarray( updateRange.offset, updateRange.offset + updateRange.count ) );

			}

			updateRange.count = - 1; // reset range

		}

	}

	//

	function get( attribute ) {

		if ( attribute.isInterleavedBufferAttribute ) attribute = attribute.data;

		return buffers.get( attribute );

	}

	function remove( attribute ) {

		if ( attribute.isInterleavedBufferAttribute ) attribute = attribute.data;

		const data = buffers.get( attribute );

		if ( data ) {

			gl.deleteBuffer( data.buffer );

			buffers.delete( attribute );

		}

	}

	function update( attribute, bufferType ) {

		if ( attribute.isGLBufferAttribute ) {

			const cached = buffers.get( attribute );

			if ( ! cached || cached.version < attribute.version ) {

				buffers.set( attribute, {
					buffer: attribute.buffer,
					type: attribute.type,
					bytesPerElement: attribute.elementSize,
					version: attribute.version
				} );

			}

			return;

		}

		if ( attribute.isInterleavedBufferAttribute ) attribute = attribute.data;

		const data = buffers.get( attribute );

		if ( data === undefined ) {

			buffers.set( attribute, createBuffer( attribute, bufferType ) );

		} else if ( data.version < attribute.version ) {

			updateBuffer( data.buffer, attribute, bufferType );

			data.version = attribute.version;

		}

	}

	return {

		get: get,
		remove: remove,
		update: update

	};

}

class PlaneGeometry extends BufferGeometry {

	constructor( width = 1, height = 1, widthSegments = 1, heightSegments = 1 ) {

		super();
		this.type = 'PlaneGeometry';

		this.parameters = {
			width: width,
			height: height,
			widthSegments: widthSegments,
			heightSegments: heightSegments
		};

		const width_half = width / 2;
		const height_half = height / 2;

		const gridX = Math.floor( widthSegments );
		const gridY = Math.floor( heightSegments );

		const gridX1 = gridX + 1;
		const gridY1 = gridY + 1;

		const segment_width = width / gridX;
		const segment_height = height / gridY;

		//

		const indices = [];
		const vertices = [];
		const normals = [];
		const uvs = [];

		for ( let iy = 0; iy < gridY1; iy ++ ) {

			const y = iy * segment_height - height_half;

			for ( let ix = 0; ix < gridX1; ix ++ ) {

				const x = ix * segment_width - width_half;

				vertices.push( x, - y, 0 );

				normals.push( 0, 0, 1 );

				uvs.push( ix / gridX );
				uvs.push( 1 - ( iy / gridY ) );

			}

		}

		for ( let iy = 0; iy < gridY; iy ++ ) {

			for ( let ix = 0; ix < gridX; ix ++ ) {

				const a = ix + gridX1 * iy;
				const b = ix + gridX1 * ( iy + 1 );
				const c = ( ix + 1 ) + gridX1 * ( iy + 1 );
				const d = ( ix + 1 ) + gridX1 * iy;

				indices.push( a, b, d );
				indices.push( b, c, d );

			}

		}

		this.setIndex( indices );
		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );

	}

	static fromJSON( data ) {

		return new PlaneGeometry( data.width, data.height, data.widthSegments, data.heightSegments );

	}

}

var alphamap_fragment = "#ifdef USE_ALPHAMAP\n\tdiffuseColor.a *= texture2D( alphaMap, vUv ).g;\n#endif";

var alphamap_pars_fragment = "#ifdef USE_ALPHAMAP\n\tuniform sampler2D alphaMap;\n#endif";

var alphatest_fragment = "#ifdef USE_ALPHATEST\n\tif ( diffuseColor.a < alphaTest ) discard;\n#endif";

var alphatest_pars_fragment = "#ifdef USE_ALPHATEST\n\tuniform float alphaTest;\n#endif";

var aomap_fragment = "#ifdef USE_AOMAP\n\tfloat ambientOcclusion = ( texture2D( aoMap, vUv2 ).r - 1.0 ) * aoMapIntensity + 1.0;\n\treflectedLight.indirectDiffuse *= ambientOcclusion;\n\t#if defined( USE_ENVMAP ) && defined( STANDARD )\n\t\tfloat dotNV = saturate( dot( geometry.normal, geometry.viewDir ) );\n\t\treflectedLight.indirectSpecular *= computeSpecularOcclusion( dotNV, ambientOcclusion, material.roughness );\n\t#endif\n#endif";

var aomap_pars_fragment = "#ifdef USE_AOMAP\n\tuniform sampler2D aoMap;\n\tuniform float aoMapIntensity;\n#endif";

var begin_vertex = "vec3 transformed = vec3( position );";

var beginnormal_vertex = "vec3 objectNormal = vec3( normal );\n#ifdef USE_TANGENT\n\tvec3 objectTangent = vec3( tangent.xyz );\n#endif";

var bsdfs = "vec3 BRDF_Lambert( const in vec3 diffuseColor ) {\n\treturn RECIPROCAL_PI * diffuseColor;\n}\nvec3 F_Schlick( const in vec3 f0, const in float f90, const in float dotVH ) {\n\tfloat fresnel = exp2( ( - 5.55473 * dotVH - 6.98316 ) * dotVH );\n\treturn f0 * ( 1.0 - fresnel ) + ( f90 * fresnel );\n}\nfloat V_GGX_SmithCorrelated( const in float alpha, const in float dotNL, const in float dotNV ) {\n\tfloat a2 = pow2( alpha );\n\tfloat gv = dotNL * sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNV ) );\n\tfloat gl = dotNV * sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNL ) );\n\treturn 0.5 / max( gv + gl, EPSILON );\n}\nfloat D_GGX( const in float alpha, const in float dotNH ) {\n\tfloat a2 = pow2( alpha );\n\tfloat denom = pow2( dotNH ) * ( a2 - 1.0 ) + 1.0;\n\treturn RECIPROCAL_PI * a2 / pow2( denom );\n}\nvec3 BRDF_GGX( const in vec3 lightDir, const in vec3 viewDir, const in vec3 normal, const in vec3 f0, const in float f90, const in float roughness ) {\n\tfloat alpha = pow2( roughness );\n\tvec3 halfDir = normalize( lightDir + viewDir );\n\tfloat dotNL = saturate( dot( normal, lightDir ) );\n\tfloat dotNV = saturate( dot( normal, viewDir ) );\n\tfloat dotNH = saturate( dot( normal, halfDir ) );\n\tfloat dotVH = saturate( dot( viewDir, halfDir ) );\n\tvec3 F = F_Schlick( f0, f90, dotVH );\n\tfloat V = V_GGX_SmithCorrelated( alpha, dotNL, dotNV );\n\tfloat D = D_GGX( alpha, dotNH );\n\treturn F * ( V * D );\n}\nvec2 LTC_Uv( const in vec3 N, const in vec3 V, const in float roughness ) {\n\tconst float LUT_SIZE = 64.0;\n\tconst float LUT_SCALE = ( LUT_SIZE - 1.0 ) / LUT_SIZE;\n\tconst float LUT_BIAS = 0.5 / LUT_SIZE;\n\tfloat dotNV = saturate( dot( N, V ) );\n\tvec2 uv = vec2( roughness, sqrt( 1.0 - dotNV ) );\n\tuv = uv * LUT_SCALE + LUT_BIAS;\n\treturn uv;\n}\nfloat LTC_ClippedSphereFormFactor( const in vec3 f ) {\n\tfloat l = length( f );\n\treturn max( ( l * l + f.z ) / ( l + 1.0 ), 0.0 );\n}\nvec3 LTC_EdgeVectorFormFactor( const in vec3 v1, const in vec3 v2 ) {\n\tfloat x = dot( v1, v2 );\n\tfloat y = abs( x );\n\tfloat a = 0.8543985 + ( 0.4965155 + 0.0145206 * y ) * y;\n\tfloat b = 3.4175940 + ( 4.1616724 + y ) * y;\n\tfloat v = a / b;\n\tfloat theta_sintheta = ( x > 0.0 ) ? v : 0.5 * inversesqrt( max( 1.0 - x * x, 1e-7 ) ) - v;\n\treturn cross( v1, v2 ) * theta_sintheta;\n}\nvec3 LTC_Evaluate( const in vec3 N, const in vec3 V, const in vec3 P, const in mat3 mInv, const in vec3 rectCoords[ 4 ] ) {\n\tvec3 v1 = rectCoords[ 1 ] - rectCoords[ 0 ];\n\tvec3 v2 = rectCoords[ 3 ] - rectCoords[ 0 ];\n\tvec3 lightNormal = cross( v1, v2 );\n\tif( dot( lightNormal, P - rectCoords[ 0 ] ) < 0.0 ) return vec3( 0.0 );\n\tvec3 T1, T2;\n\tT1 = normalize( V - N * dot( V, N ) );\n\tT2 = - cross( N, T1 );\n\tmat3 mat = mInv * transposeMat3( mat3( T1, T2, N ) );\n\tvec3 coords[ 4 ];\n\tcoords[ 0 ] = mat * ( rectCoords[ 0 ] - P );\n\tcoords[ 1 ] = mat * ( rectCoords[ 1 ] - P );\n\tcoords[ 2 ] = mat * ( rectCoords[ 2 ] - P );\n\tcoords[ 3 ] = mat * ( rectCoords[ 3 ] - P );\n\tcoords[ 0 ] = normalize( coords[ 0 ] );\n\tcoords[ 1 ] = normalize( coords[ 1 ] );\n\tcoords[ 2 ] = normalize( coords[ 2 ] );\n\tcoords[ 3 ] = normalize( coords[ 3 ] );\n\tvec3 vectorFormFactor = vec3( 0.0 );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 0 ], coords[ 1 ] );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 1 ], coords[ 2 ] );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 2 ], coords[ 3 ] );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 3 ], coords[ 0 ] );\n\tfloat result = LTC_ClippedSphereFormFactor( vectorFormFactor );\n\treturn vec3( result );\n}\nfloat G_BlinnPhong_Implicit( ) {\n\treturn 0.25;\n}\nfloat D_BlinnPhong( const in float shininess, const in float dotNH ) {\n\treturn RECIPROCAL_PI * ( shininess * 0.5 + 1.0 ) * pow( dotNH, shininess );\n}\nvec3 BRDF_BlinnPhong( const in vec3 lightDir, const in vec3 viewDir, const in vec3 normal, const in vec3 specularColor, const in float shininess ) {\n\tvec3 halfDir = normalize( lightDir + viewDir );\n\tfloat dotNH = saturate( dot( normal, halfDir ) );\n\tfloat dotVH = saturate( dot( viewDir, halfDir ) );\n\tvec3 F = F_Schlick( specularColor, 1.0, dotVH );\n\tfloat G = G_BlinnPhong_Implicit( );\n\tfloat D = D_BlinnPhong( shininess, dotNH );\n\treturn F * ( G * D );\n}\n#if defined( USE_SHEEN )\nfloat D_Charlie( float roughness, float dotNH ) {\n\tfloat alpha = pow2( roughness );\n\tfloat invAlpha = 1.0 / alpha;\n\tfloat cos2h = dotNH * dotNH;\n\tfloat sin2h = max( 1.0 - cos2h, 0.0078125 );\n\treturn ( 2.0 + invAlpha ) * pow( sin2h, invAlpha * 0.5 ) / ( 2.0 * PI );\n}\nfloat V_Neubelt( float dotNV, float dotNL ) {\n\treturn saturate( 1.0 / ( 4.0 * ( dotNL + dotNV - dotNL * dotNV ) ) );\n}\nvec3 BRDF_Sheen( const in vec3 lightDir, const in vec3 viewDir, const in vec3 normal, vec3 sheenColor, const in float sheenRoughness ) {\n\tvec3 halfDir = normalize( lightDir + viewDir );\n\tfloat dotNL = saturate( dot( normal, lightDir ) );\n\tfloat dotNV = saturate( dot( normal, viewDir ) );\n\tfloat dotNH = saturate( dot( normal, halfDir ) );\n\tfloat D = D_Charlie( sheenRoughness, dotNH );\n\tfloat V = V_Neubelt( dotNV, dotNL );\n\treturn sheenColor * ( D * V );\n}\n#endif";

var bumpmap_pars_fragment = "#ifdef USE_BUMPMAP\n\tuniform sampler2D bumpMap;\n\tuniform float bumpScale;\n\tvec2 dHdxy_fwd() {\n\t\tvec2 dSTdx = dFdx( vUv );\n\t\tvec2 dSTdy = dFdy( vUv );\n\t\tfloat Hll = bumpScale * texture2D( bumpMap, vUv ).x;\n\t\tfloat dBx = bumpScale * texture2D( bumpMap, vUv + dSTdx ).x - Hll;\n\t\tfloat dBy = bumpScale * texture2D( bumpMap, vUv + dSTdy ).x - Hll;\n\t\treturn vec2( dBx, dBy );\n\t}\n\tvec3 perturbNormalArb( vec3 surf_pos, vec3 surf_norm, vec2 dHdxy, float faceDirection ) {\n\t\tvec3 vSigmaX = vec3( dFdx( surf_pos.x ), dFdx( surf_pos.y ), dFdx( surf_pos.z ) );\n\t\tvec3 vSigmaY = vec3( dFdy( surf_pos.x ), dFdy( surf_pos.y ), dFdy( surf_pos.z ) );\n\t\tvec3 vN = surf_norm;\n\t\tvec3 R1 = cross( vSigmaY, vN );\n\t\tvec3 R2 = cross( vN, vSigmaX );\n\t\tfloat fDet = dot( vSigmaX, R1 ) * faceDirection;\n\t\tvec3 vGrad = sign( fDet ) * ( dHdxy.x * R1 + dHdxy.y * R2 );\n\t\treturn normalize( abs( fDet ) * surf_norm - vGrad );\n\t}\n#endif";

var clipping_planes_fragment = "#if NUM_CLIPPING_PLANES > 0\n\tvec4 plane;\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < UNION_CLIPPING_PLANES; i ++ ) {\n\t\tplane = clippingPlanes[ i ];\n\t\tif ( dot( vClipPosition, plane.xyz ) > plane.w ) discard;\n\t}\n\t#pragma unroll_loop_end\n\t#if UNION_CLIPPING_PLANES < NUM_CLIPPING_PLANES\n\t\tbool clipped = true;\n\t\t#pragma unroll_loop_start\n\t\tfor ( int i = UNION_CLIPPING_PLANES; i < NUM_CLIPPING_PLANES; i ++ ) {\n\t\t\tplane = clippingPlanes[ i ];\n\t\t\tclipped = ( dot( vClipPosition, plane.xyz ) > plane.w ) && clipped;\n\t\t}\n\t\t#pragma unroll_loop_end\n\t\tif ( clipped ) discard;\n\t#endif\n#endif";

var clipping_planes_pars_fragment = "#if NUM_CLIPPING_PLANES > 0\n\tvarying vec3 vClipPosition;\n\tuniform vec4 clippingPlanes[ NUM_CLIPPING_PLANES ];\n#endif";

var clipping_planes_pars_vertex = "#if NUM_CLIPPING_PLANES > 0\n\tvarying vec3 vClipPosition;\n#endif";

var clipping_planes_vertex = "#if NUM_CLIPPING_PLANES > 0\n\tvClipPosition = - mvPosition.xyz;\n#endif";

var color_fragment = "#if defined( USE_COLOR_ALPHA )\n\tdiffuseColor *= vColor;\n#elif defined( USE_COLOR )\n\tdiffuseColor.rgb *= vColor;\n#endif";

var color_pars_fragment = "#if defined( USE_COLOR_ALPHA )\n\tvarying vec4 vColor;\n#elif defined( USE_COLOR )\n\tvarying vec3 vColor;\n#endif";

var color_pars_vertex = "#if defined( USE_COLOR_ALPHA )\n\tvarying vec4 vColor;\n#elif defined( USE_COLOR ) || defined( USE_INSTANCING_COLOR )\n\tvarying vec3 vColor;\n#endif";

var color_vertex = "#if defined( USE_COLOR_ALPHA )\n\tvColor = vec4( 1.0 );\n#elif defined( USE_COLOR ) || defined( USE_INSTANCING_COLOR )\n\tvColor = vec3( 1.0 );\n#endif\n#ifdef USE_COLOR\n\tvColor *= color;\n#endif\n#ifdef USE_INSTANCING_COLOR\n\tvColor.xyz *= instanceColor.xyz;\n#endif";

var common = "#define PI 3.141592653589793\n#define PI2 6.283185307179586\n#define PI_HALF 1.5707963267948966\n#define RECIPROCAL_PI 0.3183098861837907\n#define RECIPROCAL_PI2 0.15915494309189535\n#define EPSILON 1e-6\n#ifndef saturate\n#define saturate( a ) clamp( a, 0.0, 1.0 )\n#endif\n#define whiteComplement( a ) ( 1.0 - saturate( a ) )\nfloat pow2( const in float x ) { return x*x; }\nfloat pow3( const in float x ) { return x*x*x; }\nfloat pow4( const in float x ) { float x2 = x*x; return x2*x2; }\nfloat max3( const in vec3 v ) { return max( max( v.x, v.y ), v.z ); }\nfloat average( const in vec3 color ) { return dot( color, vec3( 0.3333 ) ); }\nhighp float rand( const in vec2 uv ) {\n\tconst highp float a = 12.9898, b = 78.233, c = 43758.5453;\n\thighp float dt = dot( uv.xy, vec2( a,b ) ), sn = mod( dt, PI );\n\treturn fract( sin( sn ) * c );\n}\n#ifdef HIGH_PRECISION\n\tfloat precisionSafeLength( vec3 v ) { return length( v ); }\n#else\n\tfloat precisionSafeLength( vec3 v ) {\n\t\tfloat maxComponent = max3( abs( v ) );\n\t\treturn length( v / maxComponent ) * maxComponent;\n\t}\n#endif\nstruct IncidentLight {\n\tvec3 color;\n\tvec3 direction;\n\tbool visible;\n};\nstruct ReflectedLight {\n\tvec3 directDiffuse;\n\tvec3 directSpecular;\n\tvec3 indirectDiffuse;\n\tvec3 indirectSpecular;\n};\nstruct GeometricContext {\n\tvec3 position;\n\tvec3 normal;\n\tvec3 viewDir;\n#ifdef USE_CLEARCOAT\n\tvec3 clearcoatNormal;\n#endif\n};\nvec3 transformDirection( in vec3 dir, in mat4 matrix ) {\n\treturn normalize( ( matrix * vec4( dir, 0.0 ) ).xyz );\n}\nvec3 inverseTransformDirection( in vec3 dir, in mat4 matrix ) {\n\treturn normalize( ( vec4( dir, 0.0 ) * matrix ).xyz );\n}\nmat3 transposeMat3( const in mat3 m ) {\n\tmat3 tmp;\n\ttmp[ 0 ] = vec3( m[ 0 ].x, m[ 1 ].x, m[ 2 ].x );\n\ttmp[ 1 ] = vec3( m[ 0 ].y, m[ 1 ].y, m[ 2 ].y );\n\ttmp[ 2 ] = vec3( m[ 0 ].z, m[ 1 ].z, m[ 2 ].z );\n\treturn tmp;\n}\nfloat linearToRelativeLuminance( const in vec3 color ) {\n\tvec3 weights = vec3( 0.2126, 0.7152, 0.0722 );\n\treturn dot( weights, color.rgb );\n}\nbool isPerspectiveMatrix( mat4 m ) {\n\treturn m[ 2 ][ 3 ] == - 1.0;\n}\nvec2 equirectUv( in vec3 dir ) {\n\tfloat u = atan( dir.z, dir.x ) * RECIPROCAL_PI2 + 0.5;\n\tfloat v = asin( clamp( dir.y, - 1.0, 1.0 ) ) * RECIPROCAL_PI + 0.5;\n\treturn vec2( u, v );\n}";

var cube_uv_reflection_fragment = "#ifdef ENVMAP_TYPE_CUBE_UV\n\t#define cubeUV_minMipLevel 4.0\n\t#define cubeUV_minTileSize 16.0\n\tfloat getFace( vec3 direction ) {\n\t\tvec3 absDirection = abs( direction );\n\t\tfloat face = - 1.0;\n\t\tif ( absDirection.x > absDirection.z ) {\n\t\t\tif ( absDirection.x > absDirection.y )\n\t\t\t\tface = direction.x > 0.0 ? 0.0 : 3.0;\n\t\t\telse\n\t\t\t\tface = direction.y > 0.0 ? 1.0 : 4.0;\n\t\t} else {\n\t\t\tif ( absDirection.z > absDirection.y )\n\t\t\t\tface = direction.z > 0.0 ? 2.0 : 5.0;\n\t\t\telse\n\t\t\t\tface = direction.y > 0.0 ? 1.0 : 4.0;\n\t\t}\n\t\treturn face;\n\t}\n\tvec2 getUV( vec3 direction, float face ) {\n\t\tvec2 uv;\n\t\tif ( face == 0.0 ) {\n\t\t\tuv = vec2( direction.z, direction.y ) / abs( direction.x );\n\t\t} else if ( face == 1.0 ) {\n\t\t\tuv = vec2( - direction.x, - direction.z ) / abs( direction.y );\n\t\t} else if ( face == 2.0 ) {\n\t\t\tuv = vec2( - direction.x, direction.y ) / abs( direction.z );\n\t\t} else if ( face == 3.0 ) {\n\t\t\tuv = vec2( - direction.z, direction.y ) / abs( direction.x );\n\t\t} else if ( face == 4.0 ) {\n\t\t\tuv = vec2( - direction.x, direction.z ) / abs( direction.y );\n\t\t} else {\n\t\t\tuv = vec2( direction.x, direction.y ) / abs( direction.z );\n\t\t}\n\t\treturn 0.5 * ( uv + 1.0 );\n\t}\n\tvec3 bilinearCubeUV( sampler2D envMap, vec3 direction, float mipInt ) {\n\t\tfloat face = getFace( direction );\n\t\tfloat filterInt = max( cubeUV_minMipLevel - mipInt, 0.0 );\n\t\tmipInt = max( mipInt, cubeUV_minMipLevel );\n\t\tfloat faceSize = exp2( mipInt );\n\t\tvec2 uv = getUV( direction, face ) * ( faceSize - 1.0 ) + 0.5;\n\t\tif ( face > 2.0 ) {\n\t\t\tuv.y += faceSize;\n\t\t\tface -= 3.0;\n\t\t}\n\t\tuv.x += face * faceSize;\n\t\tuv.x += filterInt * 3.0 * cubeUV_minTileSize;\n\t\tuv.y += 4.0 * ( exp2( CUBEUV_MAX_MIP ) - faceSize );\n\t\tuv.x *= CUBEUV_TEXEL_WIDTH;\n\t\tuv.y *= CUBEUV_TEXEL_HEIGHT;\n\t\t#ifdef texture2DGradEXT\n\t\t\treturn texture2DGradEXT( envMap, uv, vec2( 0.0 ), vec2( 0.0 ) ).rgb;\n\t\t#else\n\t\t\treturn texture2D( envMap, uv ).rgb;\n\t\t#endif\n\t}\n\t#define r0 1.0\n\t#define v0 0.339\n\t#define m0 - 2.0\n\t#define r1 0.8\n\t#define v1 0.276\n\t#define m1 - 1.0\n\t#define r4 0.4\n\t#define v4 0.046\n\t#define m4 2.0\n\t#define r5 0.305\n\t#define v5 0.016\n\t#define m5 3.0\n\t#define r6 0.21\n\t#define v6 0.0038\n\t#define m6 4.0\n\tfloat roughnessToMip( float roughness ) {\n\t\tfloat mip = 0.0;\n\t\tif ( roughness >= r1 ) {\n\t\t\tmip = ( r0 - roughness ) * ( m1 - m0 ) / ( r0 - r1 ) + m0;\n\t\t} else if ( roughness >= r4 ) {\n\t\t\tmip = ( r1 - roughness ) * ( m4 - m1 ) / ( r1 - r4 ) + m1;\n\t\t} else if ( roughness >= r5 ) {\n\t\t\tmip = ( r4 - roughness ) * ( m5 - m4 ) / ( r4 - r5 ) + m4;\n\t\t} else if ( roughness >= r6 ) {\n\t\t\tmip = ( r5 - roughness ) * ( m6 - m5 ) / ( r5 - r6 ) + m5;\n\t\t} else {\n\t\t\tmip = - 2.0 * log2( 1.16 * roughness );\t\t}\n\t\treturn mip;\n\t}\n\tvec4 textureCubeUV( sampler2D envMap, vec3 sampleDir, float roughness ) {\n\t\tfloat mip = clamp( roughnessToMip( roughness ), m0, CUBEUV_MAX_MIP );\n\t\tfloat mipF = fract( mip );\n\t\tfloat mipInt = floor( mip );\n\t\tvec3 color0 = bilinearCubeUV( envMap, sampleDir, mipInt );\n\t\tif ( mipF == 0.0 ) {\n\t\t\treturn vec4( color0, 1.0 );\n\t\t} else {\n\t\t\tvec3 color1 = bilinearCubeUV( envMap, sampleDir, mipInt + 1.0 );\n\t\t\treturn vec4( mix( color0, color1, mipF ), 1.0 );\n\t\t}\n\t}\n#endif";

var defaultnormal_vertex = "vec3 transformedNormal = objectNormal;\n#ifdef USE_INSTANCING\n\tmat3 m = mat3( instanceMatrix );\n\ttransformedNormal /= vec3( dot( m[ 0 ], m[ 0 ] ), dot( m[ 1 ], m[ 1 ] ), dot( m[ 2 ], m[ 2 ] ) );\n\ttransformedNormal = m * transformedNormal;\n#endif\ntransformedNormal = normalMatrix * transformedNormal;\n#ifdef FLIP_SIDED\n\ttransformedNormal = - transformedNormal;\n#endif\n#ifdef USE_TANGENT\n\tvec3 transformedTangent = ( modelViewMatrix * vec4( objectTangent, 0.0 ) ).xyz;\n\t#ifdef FLIP_SIDED\n\t\ttransformedTangent = - transformedTangent;\n\t#endif\n#endif";

var displacementmap_pars_vertex = "#ifdef USE_DISPLACEMENTMAP\n\tuniform sampler2D displacementMap;\n\tuniform float displacementScale;\n\tuniform float displacementBias;\n#endif";

var displacementmap_vertex = "#ifdef USE_DISPLACEMENTMAP\n\ttransformed += normalize( objectNormal ) * ( texture2D( displacementMap, vUv ).x * displacementScale + displacementBias );\n#endif";

var emissivemap_fragment = "#ifdef USE_EMISSIVEMAP\n\tvec4 emissiveColor = texture2D( emissiveMap, vUv );\n\ttotalEmissiveRadiance *= emissiveColor.rgb;\n#endif";

var emissivemap_pars_fragment = "#ifdef USE_EMISSIVEMAP\n\tuniform sampler2D emissiveMap;\n#endif";

var encodings_fragment = "gl_FragColor = linearToOutputTexel( gl_FragColor );";

var encodings_pars_fragment = "vec4 LinearToLinear( in vec4 value ) {\n\treturn value;\n}\nvec4 LinearTosRGB( in vec4 value ) {\n\treturn vec4( mix( pow( value.rgb, vec3( 0.41666 ) ) * 1.055 - vec3( 0.055 ), value.rgb * 12.92, vec3( lessThanEqual( value.rgb, vec3( 0.0031308 ) ) ) ), value.a );\n}";

var envmap_fragment = "#ifdef USE_ENVMAP\n\t#ifdef ENV_WORLDPOS\n\t\tvec3 cameraToFrag;\n\t\tif ( isOrthographic ) {\n\t\t\tcameraToFrag = normalize( vec3( - viewMatrix[ 0 ][ 2 ], - viewMatrix[ 1 ][ 2 ], - viewMatrix[ 2 ][ 2 ] ) );\n\t\t} else {\n\t\t\tcameraToFrag = normalize( vWorldPosition - cameraPosition );\n\t\t}\n\t\tvec3 worldNormal = inverseTransformDirection( normal, viewMatrix );\n\t\t#ifdef ENVMAP_MODE_REFLECTION\n\t\t\tvec3 reflectVec = reflect( cameraToFrag, worldNormal );\n\t\t#else\n\t\t\tvec3 reflectVec = refract( cameraToFrag, worldNormal, refractionRatio );\n\t\t#endif\n\t#else\n\t\tvec3 reflectVec = vReflect;\n\t#endif\n\t#ifdef ENVMAP_TYPE_CUBE\n\t\tvec4 envColor = textureCube( envMap, vec3( flipEnvMap * reflectVec.x, reflectVec.yz ) );\n\t#elif defined( ENVMAP_TYPE_CUBE_UV )\n\t\tvec4 envColor = textureCubeUV( envMap, reflectVec, 0.0 );\n\t#else\n\t\tvec4 envColor = vec4( 0.0 );\n\t#endif\n\t#ifdef ENVMAP_BLENDING_MULTIPLY\n\t\toutgoingLight = mix( outgoingLight, outgoingLight * envColor.xyz, specularStrength * reflectivity );\n\t#elif defined( ENVMAP_BLENDING_MIX )\n\t\toutgoingLight = mix( outgoingLight, envColor.xyz, specularStrength * reflectivity );\n\t#elif defined( ENVMAP_BLENDING_ADD )\n\t\toutgoingLight += envColor.xyz * specularStrength * reflectivity;\n\t#endif\n#endif";

var envmap_common_pars_fragment = "#ifdef USE_ENVMAP\n\tuniform float envMapIntensity;\n\tuniform float flipEnvMap;\n\t#ifdef ENVMAP_TYPE_CUBE\n\t\tuniform samplerCube envMap;\n\t#else\n\t\tuniform sampler2D envMap;\n\t#endif\n\t\n#endif";

var envmap_pars_fragment = "#ifdef USE_ENVMAP\n\tuniform float reflectivity;\n\t#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( PHONG )\n\t\t#define ENV_WORLDPOS\n\t#endif\n\t#ifdef ENV_WORLDPOS\n\t\tvarying vec3 vWorldPosition;\n\t\tuniform float refractionRatio;\n\t#else\n\t\tvarying vec3 vReflect;\n\t#endif\n#endif";

var envmap_pars_vertex = "#ifdef USE_ENVMAP\n\t#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) ||defined( PHONG )\n\t\t#define ENV_WORLDPOS\n\t#endif\n\t#ifdef ENV_WORLDPOS\n\t\t\n\t\tvarying vec3 vWorldPosition;\n\t#else\n\t\tvarying vec3 vReflect;\n\t\tuniform float refractionRatio;\n\t#endif\n#endif";

var envmap_vertex = "#ifdef USE_ENVMAP\n\t#ifdef ENV_WORLDPOS\n\t\tvWorldPosition = worldPosition.xyz;\n\t#else\n\t\tvec3 cameraToVertex;\n\t\tif ( isOrthographic ) {\n\t\t\tcameraToVertex = normalize( vec3( - viewMatrix[ 0 ][ 2 ], - viewMatrix[ 1 ][ 2 ], - viewMatrix[ 2 ][ 2 ] ) );\n\t\t} else {\n\t\t\tcameraToVertex = normalize( worldPosition.xyz - cameraPosition );\n\t\t}\n\t\tvec3 worldNormal = inverseTransformDirection( transformedNormal, viewMatrix );\n\t\t#ifdef ENVMAP_MODE_REFLECTION\n\t\t\tvReflect = reflect( cameraToVertex, worldNormal );\n\t\t#else\n\t\t\tvReflect = refract( cameraToVertex, worldNormal, refractionRatio );\n\t\t#endif\n\t#endif\n#endif";

var fog_vertex = "#ifdef USE_FOG\n\tvFogDepth = - mvPosition.z;\n#endif";

var fog_pars_vertex = "#ifdef USE_FOG\n\tvarying float vFogDepth;\n#endif";

var fog_fragment = "#ifdef USE_FOG\n\t#ifdef FOG_EXP2\n\t\tfloat fogFactor = 1.0 - exp( - fogDensity * fogDensity * vFogDepth * vFogDepth );\n\t#else\n\t\tfloat fogFactor = smoothstep( fogNear, fogFar, vFogDepth );\n\t#endif\n\tgl_FragColor.rgb = mix( gl_FragColor.rgb, fogColor, fogFactor );\n#endif";

var fog_pars_fragment = "#ifdef USE_FOG\n\tuniform vec3 fogColor;\n\tvarying float vFogDepth;\n\t#ifdef FOG_EXP2\n\t\tuniform float fogDensity;\n\t#else\n\t\tuniform float fogNear;\n\t\tuniform float fogFar;\n\t#endif\n#endif";

var gradientmap_pars_fragment = "#ifdef USE_GRADIENTMAP\n\tuniform sampler2D gradientMap;\n#endif\nvec3 getGradientIrradiance( vec3 normal, vec3 lightDirection ) {\n\tfloat dotNL = dot( normal, lightDirection );\n\tvec2 coord = vec2( dotNL * 0.5 + 0.5, 0.0 );\n\t#ifdef USE_GRADIENTMAP\n\t\treturn vec3( texture2D( gradientMap, coord ).r );\n\t#else\n\t\treturn ( coord.x < 0.7 ) ? vec3( 0.7 ) : vec3( 1.0 );\n\t#endif\n}";

var lightmap_fragment = "#ifdef USE_LIGHTMAP\n\tvec4 lightMapTexel = texture2D( lightMap, vUv2 );\n\tvec3 lightMapIrradiance = lightMapTexel.rgb * lightMapIntensity;\n\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\tlightMapIrradiance *= PI;\n\t#endif\n\treflectedLight.indirectDiffuse += lightMapIrradiance;\n#endif";

var lightmap_pars_fragment = "#ifdef USE_LIGHTMAP\n\tuniform sampler2D lightMap;\n\tuniform float lightMapIntensity;\n#endif";

var lights_lambert_vertex = "vec3 diffuse = vec3( 1.0 );\nGeometricContext geometry;\ngeometry.position = mvPosition.xyz;\ngeometry.normal = normalize( transformedNormal );\ngeometry.viewDir = ( isOrthographic ) ? vec3( 0, 0, 1 ) : normalize( -mvPosition.xyz );\nGeometricContext backGeometry;\nbackGeometry.position = geometry.position;\nbackGeometry.normal = -geometry.normal;\nbackGeometry.viewDir = geometry.viewDir;\nvLightFront = vec3( 0.0 );\nvIndirectFront = vec3( 0.0 );\n#ifdef DOUBLE_SIDED\n\tvLightBack = vec3( 0.0 );\n\tvIndirectBack = vec3( 0.0 );\n#endif\nIncidentLight directLight;\nfloat dotNL;\nvec3 directLightColor_Diffuse;\nvIndirectFront += getAmbientLightIrradiance( ambientLightColor );\nvIndirectFront += getLightProbeIrradiance( lightProbe, geometry.normal );\n#ifdef DOUBLE_SIDED\n\tvIndirectBack += getAmbientLightIrradiance( ambientLightColor );\n\tvIndirectBack += getLightProbeIrradiance( lightProbe, backGeometry.normal );\n#endif\n#if NUM_POINT_LIGHTS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_POINT_LIGHTS; i ++ ) {\n\t\tgetPointLightInfo( pointLights[ i ], geometry, directLight );\n\t\tdotNL = dot( geometry.normal, directLight.direction );\n\t\tdirectLightColor_Diffuse = directLight.color;\n\t\tvLightFront += saturate( dotNL ) * directLightColor_Diffuse;\n\t\t#ifdef DOUBLE_SIDED\n\t\t\tvLightBack += saturate( - dotNL ) * directLightColor_Diffuse;\n\t\t#endif\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if NUM_SPOT_LIGHTS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_SPOT_LIGHTS; i ++ ) {\n\t\tgetSpotLightInfo( spotLights[ i ], geometry, directLight );\n\t\tdotNL = dot( geometry.normal, directLight.direction );\n\t\tdirectLightColor_Diffuse = directLight.color;\n\t\tvLightFront += saturate( dotNL ) * directLightColor_Diffuse;\n\t\t#ifdef DOUBLE_SIDED\n\t\t\tvLightBack += saturate( - dotNL ) * directLightColor_Diffuse;\n\t\t#endif\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if NUM_DIR_LIGHTS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_DIR_LIGHTS; i ++ ) {\n\t\tgetDirectionalLightInfo( directionalLights[ i ], geometry, directLight );\n\t\tdotNL = dot( geometry.normal, directLight.direction );\n\t\tdirectLightColor_Diffuse = directLight.color;\n\t\tvLightFront += saturate( dotNL ) * directLightColor_Diffuse;\n\t\t#ifdef DOUBLE_SIDED\n\t\t\tvLightBack += saturate( - dotNL ) * directLightColor_Diffuse;\n\t\t#endif\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if NUM_HEMI_LIGHTS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_HEMI_LIGHTS; i ++ ) {\n\t\tvIndirectFront += getHemisphereLightIrradiance( hemisphereLights[ i ], geometry.normal );\n\t\t#ifdef DOUBLE_SIDED\n\t\t\tvIndirectBack += getHemisphereLightIrradiance( hemisphereLights[ i ], backGeometry.normal );\n\t\t#endif\n\t}\n\t#pragma unroll_loop_end\n#endif";

var lights_pars_begin = "uniform bool receiveShadow;\nuniform vec3 ambientLightColor;\nuniform vec3 lightProbe[ 9 ];\nvec3 shGetIrradianceAt( in vec3 normal, in vec3 shCoefficients[ 9 ] ) {\n\tfloat x = normal.x, y = normal.y, z = normal.z;\n\tvec3 result = shCoefficients[ 0 ] * 0.886227;\n\tresult += shCoefficients[ 1 ] * 2.0 * 0.511664 * y;\n\tresult += shCoefficients[ 2 ] * 2.0 * 0.511664 * z;\n\tresult += shCoefficients[ 3 ] * 2.0 * 0.511664 * x;\n\tresult += shCoefficients[ 4 ] * 2.0 * 0.429043 * x * y;\n\tresult += shCoefficients[ 5 ] * 2.0 * 0.429043 * y * z;\n\tresult += shCoefficients[ 6 ] * ( 0.743125 * z * z - 0.247708 );\n\tresult += shCoefficients[ 7 ] * 2.0 * 0.429043 * x * z;\n\tresult += shCoefficients[ 8 ] * 0.429043 * ( x * x - y * y );\n\treturn result;\n}\nvec3 getLightProbeIrradiance( const in vec3 lightProbe[ 9 ], const in vec3 normal ) {\n\tvec3 worldNormal = inverseTransformDirection( normal, viewMatrix );\n\tvec3 irradiance = shGetIrradianceAt( worldNormal, lightProbe );\n\treturn irradiance;\n}\nvec3 getAmbientLightIrradiance( const in vec3 ambientLightColor ) {\n\tvec3 irradiance = ambientLightColor;\n\treturn irradiance;\n}\nfloat getDistanceAttenuation( const in float lightDistance, const in float cutoffDistance, const in float decayExponent ) {\n\t#if defined ( PHYSICALLY_CORRECT_LIGHTS )\n\t\tfloat distanceFalloff = 1.0 / max( pow( lightDistance, decayExponent ), 0.01 );\n\t\tif ( cutoffDistance > 0.0 ) {\n\t\t\tdistanceFalloff *= pow2( saturate( 1.0 - pow4( lightDistance / cutoffDistance ) ) );\n\t\t}\n\t\treturn distanceFalloff;\n\t#else\n\t\tif ( cutoffDistance > 0.0 && decayExponent > 0.0 ) {\n\t\t\treturn pow( saturate( - lightDistance / cutoffDistance + 1.0 ), decayExponent );\n\t\t}\n\t\treturn 1.0;\n\t#endif\n}\nfloat getSpotAttenuation( const in float coneCosine, const in float penumbraCosine, const in float angleCosine ) {\n\treturn smoothstep( coneCosine, penumbraCosine, angleCosine );\n}\n#if NUM_DIR_LIGHTS > 0\n\tstruct DirectionalLight {\n\t\tvec3 direction;\n\t\tvec3 color;\n\t};\n\tuniform DirectionalLight directionalLights[ NUM_DIR_LIGHTS ];\n\tvoid getDirectionalLightInfo( const in DirectionalLight directionalLight, const in GeometricContext geometry, out IncidentLight light ) {\n\t\tlight.color = directionalLight.color;\n\t\tlight.direction = directionalLight.direction;\n\t\tlight.visible = true;\n\t}\n#endif\n#if NUM_POINT_LIGHTS > 0\n\tstruct PointLight {\n\t\tvec3 position;\n\t\tvec3 color;\n\t\tfloat distance;\n\t\tfloat decay;\n\t};\n\tuniform PointLight pointLights[ NUM_POINT_LIGHTS ];\n\tvoid getPointLightInfo( const in PointLight pointLight, const in GeometricContext geometry, out IncidentLight light ) {\n\t\tvec3 lVector = pointLight.position - geometry.position;\n\t\tlight.direction = normalize( lVector );\n\t\tfloat lightDistance = length( lVector );\n\t\tlight.color = pointLight.color;\n\t\tlight.color *= getDistanceAttenuation( lightDistance, pointLight.distance, pointLight.decay );\n\t\tlight.visible = ( light.color != vec3( 0.0 ) );\n\t}\n#endif\n#if NUM_SPOT_LIGHTS > 0\n\tstruct SpotLight {\n\t\tvec3 position;\n\t\tvec3 direction;\n\t\tvec3 color;\n\t\tfloat distance;\n\t\tfloat decay;\n\t\tfloat coneCos;\n\t\tfloat penumbraCos;\n\t};\n\tuniform SpotLight spotLights[ NUM_SPOT_LIGHTS ];\n\tvoid getSpotLightInfo( const in SpotLight spotLight, const in GeometricContext geometry, out IncidentLight light ) {\n\t\tvec3 lVector = spotLight.position - geometry.position;\n\t\tlight.direction = normalize( lVector );\n\t\tfloat angleCos = dot( light.direction, spotLight.direction );\n\t\tfloat spotAttenuation = getSpotAttenuation( spotLight.coneCos, spotLight.penumbraCos, angleCos );\n\t\tif ( spotAttenuation > 0.0 ) {\n\t\t\tfloat lightDistance = length( lVector );\n\t\t\tlight.color = spotLight.color * spotAttenuation;\n\t\t\tlight.color *= getDistanceAttenuation( lightDistance, spotLight.distance, spotLight.decay );\n\t\t\tlight.visible = ( light.color != vec3( 0.0 ) );\n\t\t} else {\n\t\t\tlight.color = vec3( 0.0 );\n\t\t\tlight.visible = false;\n\t\t}\n\t}\n#endif\n#if NUM_RECT_AREA_LIGHTS > 0\n\tstruct RectAreaLight {\n\t\tvec3 color;\n\t\tvec3 position;\n\t\tvec3 halfWidth;\n\t\tvec3 halfHeight;\n\t};\n\tuniform sampler2D ltc_1;\tuniform sampler2D ltc_2;\n\tuniform RectAreaLight rectAreaLights[ NUM_RECT_AREA_LIGHTS ];\n#endif\n#if NUM_HEMI_LIGHTS > 0\n\tstruct HemisphereLight {\n\t\tvec3 direction;\n\t\tvec3 skyColor;\n\t\tvec3 groundColor;\n\t};\n\tuniform HemisphereLight hemisphereLights[ NUM_HEMI_LIGHTS ];\n\tvec3 getHemisphereLightIrradiance( const in HemisphereLight hemiLight, const in vec3 normal ) {\n\t\tfloat dotNL = dot( normal, hemiLight.direction );\n\t\tfloat hemiDiffuseWeight = 0.5 * dotNL + 0.5;\n\t\tvec3 irradiance = mix( hemiLight.groundColor, hemiLight.skyColor, hemiDiffuseWeight );\n\t\treturn irradiance;\n\t}\n#endif";

var envmap_physical_pars_fragment = "#if defined( USE_ENVMAP )\n\t#ifdef ENVMAP_MODE_REFRACTION\n\t\tuniform float refractionRatio;\n\t#endif\n\tvec3 getIBLIrradiance( const in vec3 normal ) {\n\t\t#if defined( ENVMAP_TYPE_CUBE_UV )\n\t\t\tvec3 worldNormal = inverseTransformDirection( normal, viewMatrix );\n\t\t\tvec4 envMapColor = textureCubeUV( envMap, worldNormal, 1.0 );\n\t\t\treturn PI * envMapColor.rgb * envMapIntensity;\n\t\t#else\n\t\t\treturn vec3( 0.0 );\n\t\t#endif\n\t}\n\tvec3 getIBLRadiance( const in vec3 viewDir, const in vec3 normal, const in float roughness ) {\n\t\t#if defined( ENVMAP_TYPE_CUBE_UV )\n\t\t\tvec3 reflectVec;\n\t\t\t#ifdef ENVMAP_MODE_REFLECTION\n\t\t\t\treflectVec = reflect( - viewDir, normal );\n\t\t\t\treflectVec = normalize( mix( reflectVec, normal, roughness * roughness) );\n\t\t\t#else\n\t\t\t\treflectVec = refract( - viewDir, normal, refractionRatio );\n\t\t\t#endif\n\t\t\treflectVec = inverseTransformDirection( reflectVec, viewMatrix );\n\t\t\tvec4 envMapColor = textureCubeUV( envMap, reflectVec, roughness );\n\t\t\treturn envMapColor.rgb * envMapIntensity;\n\t\t#else\n\t\t\treturn vec3( 0.0 );\n\t\t#endif\n\t}\n#endif";

var lights_toon_fragment = "ToonMaterial material;\nmaterial.diffuseColor = diffuseColor.rgb;";

var lights_toon_pars_fragment = "varying vec3 vViewPosition;\nstruct ToonMaterial {\n\tvec3 diffuseColor;\n};\nvoid RE_Direct_Toon( const in IncidentLight directLight, const in GeometricContext geometry, const in ToonMaterial material, inout ReflectedLight reflectedLight ) {\n\tvec3 irradiance = getGradientIrradiance( geometry.normal, directLight.direction ) * directLight.color;\n\treflectedLight.directDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );\n}\nvoid RE_IndirectDiffuse_Toon( const in vec3 irradiance, const in GeometricContext geometry, const in ToonMaterial material, inout ReflectedLight reflectedLight ) {\n\treflectedLight.indirectDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );\n}\n#define RE_Direct\t\t\t\tRE_Direct_Toon\n#define RE_IndirectDiffuse\t\tRE_IndirectDiffuse_Toon\n#define Material_LightProbeLOD( material )\t(0)";

var lights_phong_fragment = "BlinnPhongMaterial material;\nmaterial.diffuseColor = diffuseColor.rgb;\nmaterial.specularColor = specular;\nmaterial.specularShininess = shininess;\nmaterial.specularStrength = specularStrength;";

var lights_phong_pars_fragment = "varying vec3 vViewPosition;\nstruct BlinnPhongMaterial {\n\tvec3 diffuseColor;\n\tvec3 specularColor;\n\tfloat specularShininess;\n\tfloat specularStrength;\n};\nvoid RE_Direct_BlinnPhong( const in IncidentLight directLight, const in GeometricContext geometry, const in BlinnPhongMaterial material, inout ReflectedLight reflectedLight ) {\n\tfloat dotNL = saturate( dot( geometry.normal, directLight.direction ) );\n\tvec3 irradiance = dotNL * directLight.color;\n\treflectedLight.directDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );\n\treflectedLight.directSpecular += irradiance * BRDF_BlinnPhong( directLight.direction, geometry.viewDir, geometry.normal, material.specularColor, material.specularShininess ) * material.specularStrength;\n}\nvoid RE_IndirectDiffuse_BlinnPhong( const in vec3 irradiance, const in GeometricContext geometry, const in BlinnPhongMaterial material, inout ReflectedLight reflectedLight ) {\n\treflectedLight.indirectDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );\n}\n#define RE_Direct\t\t\t\tRE_Direct_BlinnPhong\n#define RE_IndirectDiffuse\t\tRE_IndirectDiffuse_BlinnPhong\n#define Material_LightProbeLOD( material )\t(0)";

var lights_physical_fragment = "PhysicalMaterial material;\nmaterial.diffuseColor = diffuseColor.rgb * ( 1.0 - metalnessFactor );\nvec3 dxy = max( abs( dFdx( geometryNormal ) ), abs( dFdy( geometryNormal ) ) );\nfloat geometryRoughness = max( max( dxy.x, dxy.y ), dxy.z );\nmaterial.roughness = max( roughnessFactor, 0.0525 );material.roughness += geometryRoughness;\nmaterial.roughness = min( material.roughness, 1.0 );\n#ifdef IOR\n\t#ifdef SPECULAR\n\t\tfloat specularIntensityFactor = specularIntensity;\n\t\tvec3 specularColorFactor = specularColor;\n\t\t#ifdef USE_SPECULARINTENSITYMAP\n\t\t\tspecularIntensityFactor *= texture2D( specularIntensityMap, vUv ).a;\n\t\t#endif\n\t\t#ifdef USE_SPECULARCOLORMAP\n\t\t\tspecularColorFactor *= texture2D( specularColorMap, vUv ).rgb;\n\t\t#endif\n\t\tmaterial.specularF90 = mix( specularIntensityFactor, 1.0, metalnessFactor );\n\t#else\n\t\tfloat specularIntensityFactor = 1.0;\n\t\tvec3 specularColorFactor = vec3( 1.0 );\n\t\tmaterial.specularF90 = 1.0;\n\t#endif\n\tmaterial.specularColor = mix( min( pow2( ( ior - 1.0 ) / ( ior + 1.0 ) ) * specularColorFactor, vec3( 1.0 ) ) * specularIntensityFactor, diffuseColor.rgb, metalnessFactor );\n#else\n\tmaterial.specularColor = mix( vec3( 0.04 ), diffuseColor.rgb, metalnessFactor );\n\tmaterial.specularF90 = 1.0;\n#endif\n#ifdef USE_CLEARCOAT\n\tmaterial.clearcoat = clearcoat;\n\tmaterial.clearcoatRoughness = clearcoatRoughness;\n\tmaterial.clearcoatF0 = vec3( 0.04 );\n\tmaterial.clearcoatF90 = 1.0;\n\t#ifdef USE_CLEARCOATMAP\n\t\tmaterial.clearcoat *= texture2D( clearcoatMap, vUv ).x;\n\t#endif\n\t#ifdef USE_CLEARCOAT_ROUGHNESSMAP\n\t\tmaterial.clearcoatRoughness *= texture2D( clearcoatRoughnessMap, vUv ).y;\n\t#endif\n\tmaterial.clearcoat = saturate( material.clearcoat );\tmaterial.clearcoatRoughness = max( material.clearcoatRoughness, 0.0525 );\n\tmaterial.clearcoatRoughness += geometryRoughness;\n\tmaterial.clearcoatRoughness = min( material.clearcoatRoughness, 1.0 );\n#endif\n#ifdef USE_SHEEN\n\tmaterial.sheenColor = sheenColor;\n\t#ifdef USE_SHEENCOLORMAP\n\t\tmaterial.sheenColor *= texture2D( sheenColorMap, vUv ).rgb;\n\t#endif\n\tmaterial.sheenRoughness = clamp( sheenRoughness, 0.07, 1.0 );\n\t#ifdef USE_SHEENROUGHNESSMAP\n\t\tmaterial.sheenRoughness *= texture2D( sheenRoughnessMap, vUv ).a;\n\t#endif\n#endif";

var lights_physical_pars_fragment = "struct PhysicalMaterial {\n\tvec3 diffuseColor;\n\tfloat roughness;\n\tvec3 specularColor;\n\tfloat specularF90;\n\t#ifdef USE_CLEARCOAT\n\t\tfloat clearcoat;\n\t\tfloat clearcoatRoughness;\n\t\tvec3 clearcoatF0;\n\t\tfloat clearcoatF90;\n\t#endif\n\t#ifdef USE_SHEEN\n\t\tvec3 sheenColor;\n\t\tfloat sheenRoughness;\n\t#endif\n};\nvec3 clearcoatSpecular = vec3( 0.0 );\nvec3 sheenSpecular = vec3( 0.0 );\nfloat IBLSheenBRDF( const in vec3 normal, const in vec3 viewDir, const in float roughness) {\n\tfloat dotNV = saturate( dot( normal, viewDir ) );\n\tfloat r2 = roughness * roughness;\n\tfloat a = roughness < 0.25 ? -339.2 * r2 + 161.4 * roughness - 25.9 : -8.48 * r2 + 14.3 * roughness - 9.95;\n\tfloat b = roughness < 0.25 ? 44.0 * r2 - 23.7 * roughness + 3.26 : 1.97 * r2 - 3.27 * roughness + 0.72;\n\tfloat DG = exp( a * dotNV + b ) + ( roughness < 0.25 ? 0.0 : 0.1 * ( roughness - 0.25 ) );\n\treturn saturate( DG * RECIPROCAL_PI );\n}\nvec2 DFGApprox( const in vec3 normal, const in vec3 viewDir, const in float roughness ) {\n\tfloat dotNV = saturate( dot( normal, viewDir ) );\n\tconst vec4 c0 = vec4( - 1, - 0.0275, - 0.572, 0.022 );\n\tconst vec4 c1 = vec4( 1, 0.0425, 1.04, - 0.04 );\n\tvec4 r = roughness * c0 + c1;\n\tfloat a004 = min( r.x * r.x, exp2( - 9.28 * dotNV ) ) * r.x + r.y;\n\tvec2 fab = vec2( - 1.04, 1.04 ) * a004 + r.zw;\n\treturn fab;\n}\nvec3 EnvironmentBRDF( const in vec3 normal, const in vec3 viewDir, const in vec3 specularColor, const in float specularF90, const in float roughness ) {\n\tvec2 fab = DFGApprox( normal, viewDir, roughness );\n\treturn specularColor * fab.x + specularF90 * fab.y;\n}\nvoid computeMultiscattering( const in vec3 normal, const in vec3 viewDir, const in vec3 specularColor, const in float specularF90, const in float roughness, inout vec3 singleScatter, inout vec3 multiScatter ) {\n\tvec2 fab = DFGApprox( normal, viewDir, roughness );\n\tvec3 FssEss = specularColor * fab.x + specularF90 * fab.y;\n\tfloat Ess = fab.x + fab.y;\n\tfloat Ems = 1.0 - Ess;\n\tvec3 Favg = specularColor + ( 1.0 - specularColor ) * 0.047619;\tvec3 Fms = FssEss * Favg / ( 1.0 - Ems * Favg );\n\tsingleScatter += FssEss;\n\tmultiScatter += Fms * Ems;\n}\n#if NUM_RECT_AREA_LIGHTS > 0\n\tvoid RE_Direct_RectArea_Physical( const in RectAreaLight rectAreaLight, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\n\t\tvec3 normal = geometry.normal;\n\t\tvec3 viewDir = geometry.viewDir;\n\t\tvec3 position = geometry.position;\n\t\tvec3 lightPos = rectAreaLight.position;\n\t\tvec3 halfWidth = rectAreaLight.halfWidth;\n\t\tvec3 halfHeight = rectAreaLight.halfHeight;\n\t\tvec3 lightColor = rectAreaLight.color;\n\t\tfloat roughness = material.roughness;\n\t\tvec3 rectCoords[ 4 ];\n\t\trectCoords[ 0 ] = lightPos + halfWidth - halfHeight;\t\trectCoords[ 1 ] = lightPos - halfWidth - halfHeight;\n\t\trectCoords[ 2 ] = lightPos - halfWidth + halfHeight;\n\t\trectCoords[ 3 ] = lightPos + halfWidth + halfHeight;\n\t\tvec2 uv = LTC_Uv( normal, viewDir, roughness );\n\t\tvec4 t1 = texture2D( ltc_1, uv );\n\t\tvec4 t2 = texture2D( ltc_2, uv );\n\t\tmat3 mInv = mat3(\n\t\t\tvec3( t1.x, 0, t1.y ),\n\t\t\tvec3(    0, 1,    0 ),\n\t\t\tvec3( t1.z, 0, t1.w )\n\t\t);\n\t\tvec3 fresnel = ( material.specularColor * t2.x + ( vec3( 1.0 ) - material.specularColor ) * t2.y );\n\t\treflectedLight.directSpecular += lightColor * fresnel * LTC_Evaluate( normal, viewDir, position, mInv, rectCoords );\n\t\treflectedLight.directDiffuse += lightColor * material.diffuseColor * LTC_Evaluate( normal, viewDir, position, mat3( 1.0 ), rectCoords );\n\t}\n#endif\nvoid RE_Direct_Physical( const in IncidentLight directLight, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\n\tfloat dotNL = saturate( dot( geometry.normal, directLight.direction ) );\n\tvec3 irradiance = dotNL * directLight.color;\n\t#ifdef USE_CLEARCOAT\n\t\tfloat dotNLcc = saturate( dot( geometry.clearcoatNormal, directLight.direction ) );\n\t\tvec3 ccIrradiance = dotNLcc * directLight.color;\n\t\tclearcoatSpecular += ccIrradiance * BRDF_GGX( directLight.direction, geometry.viewDir, geometry.clearcoatNormal, material.clearcoatF0, material.clearcoatF90, material.clearcoatRoughness );\n\t#endif\n\t#ifdef USE_SHEEN\n\t\tsheenSpecular += irradiance * BRDF_Sheen( directLight.direction, geometry.viewDir, geometry.normal, material.sheenColor, material.sheenRoughness );\n\t#endif\n\treflectedLight.directSpecular += irradiance * BRDF_GGX( directLight.direction, geometry.viewDir, geometry.normal, material.specularColor, material.specularF90, material.roughness );\n\treflectedLight.directDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );\n}\nvoid RE_IndirectDiffuse_Physical( const in vec3 irradiance, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\n\treflectedLight.indirectDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );\n}\nvoid RE_IndirectSpecular_Physical( const in vec3 radiance, const in vec3 irradiance, const in vec3 clearcoatRadiance, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight) {\n\t#ifdef USE_CLEARCOAT\n\t\tclearcoatSpecular += clearcoatRadiance * EnvironmentBRDF( geometry.clearcoatNormal, geometry.viewDir, material.clearcoatF0, material.clearcoatF90, material.clearcoatRoughness );\n\t#endif\n\t#ifdef USE_SHEEN\n\t\tsheenSpecular += irradiance * material.sheenColor * IBLSheenBRDF( geometry.normal, geometry.viewDir, material.sheenRoughness );\n\t#endif\n\tvec3 singleScattering = vec3( 0.0 );\n\tvec3 multiScattering = vec3( 0.0 );\n\tvec3 cosineWeightedIrradiance = irradiance * RECIPROCAL_PI;\n\tcomputeMultiscattering( geometry.normal, geometry.viewDir, material.specularColor, material.specularF90, material.roughness, singleScattering, multiScattering );\n\tvec3 diffuse = material.diffuseColor * ( 1.0 - ( singleScattering + multiScattering ) );\n\treflectedLight.indirectSpecular += radiance * singleScattering;\n\treflectedLight.indirectSpecular += multiScattering * cosineWeightedIrradiance;\n\treflectedLight.indirectDiffuse += diffuse * cosineWeightedIrradiance;\n}\n#define RE_Direct\t\t\t\tRE_Direct_Physical\n#define RE_Direct_RectArea\t\tRE_Direct_RectArea_Physical\n#define RE_IndirectDiffuse\t\tRE_IndirectDiffuse_Physical\n#define RE_IndirectSpecular\t\tRE_IndirectSpecular_Physical\nfloat computeSpecularOcclusion( const in float dotNV, const in float ambientOcclusion, const in float roughness ) {\n\treturn saturate( pow( dotNV + ambientOcclusion, exp2( - 16.0 * roughness - 1.0 ) ) - 1.0 + ambientOcclusion );\n}";

var lights_fragment_begin = "\nGeometricContext geometry;\ngeometry.position = - vViewPosition;\ngeometry.normal = normal;\ngeometry.viewDir = ( isOrthographic ) ? vec3( 0, 0, 1 ) : normalize( vViewPosition );\n#ifdef USE_CLEARCOAT\n\tgeometry.clearcoatNormal = clearcoatNormal;\n#endif\nIncidentLight directLight;\n#if ( NUM_POINT_LIGHTS > 0 ) && defined( RE_Direct )\n\tPointLight pointLight;\n\t#if defined( USE_SHADOWMAP ) && NUM_POINT_LIGHT_SHADOWS > 0\n\tPointLightShadow pointLightShadow;\n\t#endif\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_POINT_LIGHTS; i ++ ) {\n\t\tpointLight = pointLights[ i ];\n\t\tgetPointLightInfo( pointLight, geometry, directLight );\n\t\t#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_POINT_LIGHT_SHADOWS )\n\t\tpointLightShadow = pointLightShadows[ i ];\n\t\tdirectLight.color *= all( bvec2( directLight.visible, receiveShadow ) ) ? getPointShadow( pointShadowMap[ i ], pointLightShadow.shadowMapSize, pointLightShadow.shadowBias, pointLightShadow.shadowRadius, vPointShadowCoord[ i ], pointLightShadow.shadowCameraNear, pointLightShadow.shadowCameraFar ) : 1.0;\n\t\t#endif\n\t\tRE_Direct( directLight, geometry, material, reflectedLight );\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if ( NUM_SPOT_LIGHTS > 0 ) && defined( RE_Direct )\n\tSpotLight spotLight;\n\t#if defined( USE_SHADOWMAP ) && NUM_SPOT_LIGHT_SHADOWS > 0\n\tSpotLightShadow spotLightShadow;\n\t#endif\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_SPOT_LIGHTS; i ++ ) {\n\t\tspotLight = spotLights[ i ];\n\t\tgetSpotLightInfo( spotLight, geometry, directLight );\n\t\t#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_SPOT_LIGHT_SHADOWS )\n\t\tspotLightShadow = spotLightShadows[ i ];\n\t\tdirectLight.color *= all( bvec2( directLight.visible, receiveShadow ) ) ? getShadow( spotShadowMap[ i ], spotLightShadow.shadowMapSize, spotLightShadow.shadowBias, spotLightShadow.shadowRadius, vSpotShadowCoord[ i ] ) : 1.0;\n\t\t#endif\n\t\tRE_Direct( directLight, geometry, material, reflectedLight );\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if ( NUM_DIR_LIGHTS > 0 ) && defined( RE_Direct )\n\tDirectionalLight directionalLight;\n\t#if defined( USE_SHADOWMAP ) && NUM_DIR_LIGHT_SHADOWS > 0\n\tDirectionalLightShadow directionalLightShadow;\n\t#endif\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_DIR_LIGHTS; i ++ ) {\n\t\tdirectionalLight = directionalLights[ i ];\n\t\tgetDirectionalLightInfo( directionalLight, geometry, directLight );\n\t\t#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_DIR_LIGHT_SHADOWS )\n\t\tdirectionalLightShadow = directionalLightShadows[ i ];\n\t\tdirectLight.color *= all( bvec2( directLight.visible, receiveShadow ) ) ? getShadow( directionalShadowMap[ i ], directionalLightShadow.shadowMapSize, directionalLightShadow.shadowBias, directionalLightShadow.shadowRadius, vDirectionalShadowCoord[ i ] ) : 1.0;\n\t\t#endif\n\t\tRE_Direct( directLight, geometry, material, reflectedLight );\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if ( NUM_RECT_AREA_LIGHTS > 0 ) && defined( RE_Direct_RectArea )\n\tRectAreaLight rectAreaLight;\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_RECT_AREA_LIGHTS; i ++ ) {\n\t\trectAreaLight = rectAreaLights[ i ];\n\t\tRE_Direct_RectArea( rectAreaLight, geometry, material, reflectedLight );\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if defined( RE_IndirectDiffuse )\n\tvec3 iblIrradiance = vec3( 0.0 );\n\tvec3 irradiance = getAmbientLightIrradiance( ambientLightColor );\n\tirradiance += getLightProbeIrradiance( lightProbe, geometry.normal );\n\t#if ( NUM_HEMI_LIGHTS > 0 )\n\t\t#pragma unroll_loop_start\n\t\tfor ( int i = 0; i < NUM_HEMI_LIGHTS; i ++ ) {\n\t\t\tirradiance += getHemisphereLightIrradiance( hemisphereLights[ i ], geometry.normal );\n\t\t}\n\t\t#pragma unroll_loop_end\n\t#endif\n#endif\n#if defined( RE_IndirectSpecular )\n\tvec3 radiance = vec3( 0.0 );\n\tvec3 clearcoatRadiance = vec3( 0.0 );\n#endif";

var lights_fragment_maps = "#if defined( RE_IndirectDiffuse )\n\t#ifdef USE_LIGHTMAP\n\t\tvec4 lightMapTexel = texture2D( lightMap, vUv2 );\n\t\tvec3 lightMapIrradiance = lightMapTexel.rgb * lightMapIntensity;\n\t\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\t\tlightMapIrradiance *= PI;\n\t\t#endif\n\t\tirradiance += lightMapIrradiance;\n\t#endif\n\t#if defined( USE_ENVMAP ) && defined( STANDARD ) && defined( ENVMAP_TYPE_CUBE_UV )\n\t\tiblIrradiance += getIBLIrradiance( geometry.normal );\n\t#endif\n#endif\n#if defined( USE_ENVMAP ) && defined( RE_IndirectSpecular )\n\tradiance += getIBLRadiance( geometry.viewDir, geometry.normal, material.roughness );\n\t#ifdef USE_CLEARCOAT\n\t\tclearcoatRadiance += getIBLRadiance( geometry.viewDir, geometry.clearcoatNormal, material.clearcoatRoughness );\n\t#endif\n#endif";

var lights_fragment_end = "#if defined( RE_IndirectDiffuse )\n\tRE_IndirectDiffuse( irradiance, geometry, material, reflectedLight );\n#endif\n#if defined( RE_IndirectSpecular )\n\tRE_IndirectSpecular( radiance, iblIrradiance, clearcoatRadiance, geometry, material, reflectedLight );\n#endif";

var logdepthbuf_fragment = "#if defined( USE_LOGDEPTHBUF ) && defined( USE_LOGDEPTHBUF_EXT )\n\tgl_FragDepthEXT = vIsPerspective == 0.0 ? gl_FragCoord.z : log2( vFragDepth ) * logDepthBufFC * 0.5;\n#endif";

var logdepthbuf_pars_fragment = "#if defined( USE_LOGDEPTHBUF ) && defined( USE_LOGDEPTHBUF_EXT )\n\tuniform float logDepthBufFC;\n\tvarying float vFragDepth;\n\tvarying float vIsPerspective;\n#endif";

var logdepthbuf_pars_vertex = "#ifdef USE_LOGDEPTHBUF\n\t#ifdef USE_LOGDEPTHBUF_EXT\n\t\tvarying float vFragDepth;\n\t\tvarying float vIsPerspective;\n\t#else\n\t\tuniform float logDepthBufFC;\n\t#endif\n#endif";

var logdepthbuf_vertex = "#ifdef USE_LOGDEPTHBUF\n\t#ifdef USE_LOGDEPTHBUF_EXT\n\t\tvFragDepth = 1.0 + gl_Position.w;\n\t\tvIsPerspective = float( isPerspectiveMatrix( projectionMatrix ) );\n\t#else\n\t\tif ( isPerspectiveMatrix( projectionMatrix ) ) {\n\t\t\tgl_Position.z = log2( max( EPSILON, gl_Position.w + 1.0 ) ) * logDepthBufFC - 1.0;\n\t\t\tgl_Position.z *= gl_Position.w;\n\t\t}\n\t#endif\n#endif";

var map_fragment = "#ifdef USE_MAP\n\tvec4 sampledDiffuseColor = texture2D( map, vUv );\n\t#ifdef DECODE_VIDEO_TEXTURE\n\t\tsampledDiffuseColor = vec4( mix( pow( sampledDiffuseColor.rgb * 0.9478672986 + vec3( 0.0521327014 ), vec3( 2.4 ) ), sampledDiffuseColor.rgb * 0.0773993808, vec3( lessThanEqual( sampledDiffuseColor.rgb, vec3( 0.04045 ) ) ) ), sampledDiffuseColor.w );\n\t#endif\n\tdiffuseColor *= sampledDiffuseColor;\n#endif";

var map_pars_fragment = "#ifdef USE_MAP\n\tuniform sampler2D map;\n#endif";

var map_particle_fragment = "#if defined( USE_MAP ) || defined( USE_ALPHAMAP )\n\tvec2 uv = ( uvTransform * vec3( gl_PointCoord.x, 1.0 - gl_PointCoord.y, 1 ) ).xy;\n#endif\n#ifdef USE_MAP\n\tdiffuseColor *= texture2D( map, uv );\n#endif\n#ifdef USE_ALPHAMAP\n\tdiffuseColor.a *= texture2D( alphaMap, uv ).g;\n#endif";

var map_particle_pars_fragment = "#if defined( USE_MAP ) || defined( USE_ALPHAMAP )\n\tuniform mat3 uvTransform;\n#endif\n#ifdef USE_MAP\n\tuniform sampler2D map;\n#endif\n#ifdef USE_ALPHAMAP\n\tuniform sampler2D alphaMap;\n#endif";

var metalnessmap_fragment = "float metalnessFactor = metalness;\n#ifdef USE_METALNESSMAP\n\tvec4 texelMetalness = texture2D( metalnessMap, vUv );\n\tmetalnessFactor *= texelMetalness.b;\n#endif";

var metalnessmap_pars_fragment = "#ifdef USE_METALNESSMAP\n\tuniform sampler2D metalnessMap;\n#endif";

var morphcolor_vertex = "#if defined( USE_MORPHCOLORS ) && defined( MORPHTARGETS_TEXTURE )\n\tvColor *= morphTargetBaseInfluence;\n\tfor ( int i = 0; i < MORPHTARGETS_COUNT; i ++ ) {\n\t\t#if defined( USE_COLOR_ALPHA )\n\t\t\tif ( morphTargetInfluences[ i ] != 0.0 ) vColor += getMorph( gl_VertexID, i, 2 ) * morphTargetInfluences[ i ];\n\t\t#elif defined( USE_COLOR )\n\t\t\tif ( morphTargetInfluences[ i ] != 0.0 ) vColor += getMorph( gl_VertexID, i, 2 ).rgb * morphTargetInfluences[ i ]\n\t\t#endif\n\t}\n#endif";

var morphnormal_vertex = "#ifdef USE_MORPHNORMALS\n\tobjectNormal *= morphTargetBaseInfluence;\n\t#ifdef MORPHTARGETS_TEXTURE\n\t\tfor ( int i = 0; i < MORPHTARGETS_COUNT; i ++ ) {\n\t\t\tif ( morphTargetInfluences[ i ] != 0.0 ) objectNormal += getMorph( gl_VertexID, i, 1 ).xyz * morphTargetInfluences[ i ];\n\t\t}\n\t#else\n\t\tobjectNormal += morphNormal0 * morphTargetInfluences[ 0 ];\n\t\tobjectNormal += morphNormal1 * morphTargetInfluences[ 1 ];\n\t\tobjectNormal += morphNormal2 * morphTargetInfluences[ 2 ];\n\t\tobjectNormal += morphNormal3 * morphTargetInfluences[ 3 ];\n\t#endif\n#endif";

var morphtarget_pars_vertex = "#ifdef USE_MORPHTARGETS\n\tuniform float morphTargetBaseInfluence;\n\t#ifdef MORPHTARGETS_TEXTURE\n\t\tuniform float morphTargetInfluences[ MORPHTARGETS_COUNT ];\n\t\tuniform sampler2DArray morphTargetsTexture;\n\t\tuniform vec2 morphTargetsTextureSize;\n\t\tvec4 getMorph( const in int vertexIndex, const in int morphTargetIndex, const in int offset ) {\n\t\t\tfloat texelIndex = float( vertexIndex * MORPHTARGETS_TEXTURE_STRIDE + offset );\n\t\t\tfloat y = floor( texelIndex / morphTargetsTextureSize.x );\n\t\t\tfloat x = texelIndex - y * morphTargetsTextureSize.x;\n\t\t\tvec3 morphUV = vec3( ( x + 0.5 ) / morphTargetsTextureSize.x, y / morphTargetsTextureSize.y, morphTargetIndex );\n\t\t\treturn texture( morphTargetsTexture, morphUV );\n\t\t}\n\t#else\n\t\t#ifndef USE_MORPHNORMALS\n\t\t\tuniform float morphTargetInfluences[ 8 ];\n\t\t#else\n\t\t\tuniform float morphTargetInfluences[ 4 ];\n\t\t#endif\n\t#endif\n#endif";

var morphtarget_vertex = "#ifdef USE_MORPHTARGETS\n\ttransformed *= morphTargetBaseInfluence;\n\t#ifdef MORPHTARGETS_TEXTURE\n\t\tfor ( int i = 0; i < MORPHTARGETS_COUNT; i ++ ) {\n\t\t\tif ( morphTargetInfluences[ i ] != 0.0 ) transformed += getMorph( gl_VertexID, i, 0 ).xyz * morphTargetInfluences[ i ];\n\t\t}\n\t#else\n\t\ttransformed += morphTarget0 * morphTargetInfluences[ 0 ];\n\t\ttransformed += morphTarget1 * morphTargetInfluences[ 1 ];\n\t\ttransformed += morphTarget2 * morphTargetInfluences[ 2 ];\n\t\ttransformed += morphTarget3 * morphTargetInfluences[ 3 ];\n\t\t#ifndef USE_MORPHNORMALS\n\t\t\ttransformed += morphTarget4 * morphTargetInfluences[ 4 ];\n\t\t\ttransformed += morphTarget5 * morphTargetInfluences[ 5 ];\n\t\t\ttransformed += morphTarget6 * morphTargetInfluences[ 6 ];\n\t\t\ttransformed += morphTarget7 * morphTargetInfluences[ 7 ];\n\t\t#endif\n\t#endif\n#endif";

var normal_fragment_begin = "float faceDirection = gl_FrontFacing ? 1.0 : - 1.0;\n#ifdef FLAT_SHADED\n\tvec3 fdx = vec3( dFdx( vViewPosition.x ), dFdx( vViewPosition.y ), dFdx( vViewPosition.z ) );\n\tvec3 fdy = vec3( dFdy( vViewPosition.x ), dFdy( vViewPosition.y ), dFdy( vViewPosition.z ) );\n\tvec3 normal = normalize( cross( fdx, fdy ) );\n#else\n\tvec3 normal = normalize( vNormal );\n\t#ifdef DOUBLE_SIDED\n\t\tnormal = normal * faceDirection;\n\t#endif\n\t#ifdef USE_TANGENT\n\t\tvec3 tangent = normalize( vTangent );\n\t\tvec3 bitangent = normalize( vBitangent );\n\t\t#ifdef DOUBLE_SIDED\n\t\t\ttangent = tangent * faceDirection;\n\t\t\tbitangent = bitangent * faceDirection;\n\t\t#endif\n\t\t#if defined( TANGENTSPACE_NORMALMAP ) || defined( USE_CLEARCOAT_NORMALMAP )\n\t\t\tmat3 vTBN = mat3( tangent, bitangent, normal );\n\t\t#endif\n\t#endif\n#endif\nvec3 geometryNormal = normal;";

var normal_fragment_maps = "#ifdef OBJECTSPACE_NORMALMAP\n\tnormal = texture2D( normalMap, vUv ).xyz * 2.0 - 1.0;\n\t#ifdef FLIP_SIDED\n\t\tnormal = - normal;\n\t#endif\n\t#ifdef DOUBLE_SIDED\n\t\tnormal = normal * faceDirection;\n\t#endif\n\tnormal = normalize( normalMatrix * normal );\n#elif defined( TANGENTSPACE_NORMALMAP )\n\tvec3 mapN = texture2D( normalMap, vUv ).xyz * 2.0 - 1.0;\n\tmapN.xy *= normalScale;\n\t#ifdef USE_TANGENT\n\t\tnormal = normalize( vTBN * mapN );\n\t#else\n\t\tnormal = perturbNormal2Arb( - vViewPosition, normal, mapN, faceDirection );\n\t#endif\n#elif defined( USE_BUMPMAP )\n\tnormal = perturbNormalArb( - vViewPosition, normal, dHdxy_fwd(), faceDirection );\n#endif";

var normal_pars_fragment = "#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n\t#ifdef USE_TANGENT\n\t\tvarying vec3 vTangent;\n\t\tvarying vec3 vBitangent;\n\t#endif\n#endif";

var normal_pars_vertex = "#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n\t#ifdef USE_TANGENT\n\t\tvarying vec3 vTangent;\n\t\tvarying vec3 vBitangent;\n\t#endif\n#endif";

var normal_vertex = "#ifndef FLAT_SHADED\n\tvNormal = normalize( transformedNormal );\n\t#ifdef USE_TANGENT\n\t\tvTangent = normalize( transformedTangent );\n\t\tvBitangent = normalize( cross( vNormal, vTangent ) * tangent.w );\n\t#endif\n#endif";

var normalmap_pars_fragment = "#ifdef USE_NORMALMAP\n\tuniform sampler2D normalMap;\n\tuniform vec2 normalScale;\n#endif\n#ifdef OBJECTSPACE_NORMALMAP\n\tuniform mat3 normalMatrix;\n#endif\n#if ! defined ( USE_TANGENT ) && ( defined ( TANGENTSPACE_NORMALMAP ) || defined ( USE_CLEARCOAT_NORMALMAP ) )\n\tvec3 perturbNormal2Arb( vec3 eye_pos, vec3 surf_norm, vec3 mapN, float faceDirection ) {\n\t\tvec3 q0 = vec3( dFdx( eye_pos.x ), dFdx( eye_pos.y ), dFdx( eye_pos.z ) );\n\t\tvec3 q1 = vec3( dFdy( eye_pos.x ), dFdy( eye_pos.y ), dFdy( eye_pos.z ) );\n\t\tvec2 st0 = dFdx( vUv.st );\n\t\tvec2 st1 = dFdy( vUv.st );\n\t\tvec3 N = surf_norm;\n\t\tvec3 q1perp = cross( q1, N );\n\t\tvec3 q0perp = cross( N, q0 );\n\t\tvec3 T = q1perp * st0.x + q0perp * st1.x;\n\t\tvec3 B = q1perp * st0.y + q0perp * st1.y;\n\t\tfloat det = max( dot( T, T ), dot( B, B ) );\n\t\tfloat scale = ( det == 0.0 ) ? 0.0 : faceDirection * inversesqrt( det );\n\t\treturn normalize( T * ( mapN.x * scale ) + B * ( mapN.y * scale ) + N * mapN.z );\n\t}\n#endif";

var clearcoat_normal_fragment_begin = "#ifdef USE_CLEARCOAT\n\tvec3 clearcoatNormal = geometryNormal;\n#endif";

var clearcoat_normal_fragment_maps = "#ifdef USE_CLEARCOAT_NORMALMAP\n\tvec3 clearcoatMapN = texture2D( clearcoatNormalMap, vUv ).xyz * 2.0 - 1.0;\n\tclearcoatMapN.xy *= clearcoatNormalScale;\n\t#ifdef USE_TANGENT\n\t\tclearcoatNormal = normalize( vTBN * clearcoatMapN );\n\t#else\n\t\tclearcoatNormal = perturbNormal2Arb( - vViewPosition, clearcoatNormal, clearcoatMapN, faceDirection );\n\t#endif\n#endif";

var clearcoat_pars_fragment = "#ifdef USE_CLEARCOATMAP\n\tuniform sampler2D clearcoatMap;\n#endif\n#ifdef USE_CLEARCOAT_ROUGHNESSMAP\n\tuniform sampler2D clearcoatRoughnessMap;\n#endif\n#ifdef USE_CLEARCOAT_NORMALMAP\n\tuniform sampler2D clearcoatNormalMap;\n\tuniform vec2 clearcoatNormalScale;\n#endif";

var output_fragment = "#ifdef OPAQUE\ndiffuseColor.a = 1.0;\n#endif\n#ifdef USE_TRANSMISSION\ndiffuseColor.a *= transmissionAlpha + 0.1;\n#endif\ngl_FragColor = vec4( outgoingLight, diffuseColor.a );";

var packing = "vec3 packNormalToRGB( const in vec3 normal ) {\n\treturn normalize( normal ) * 0.5 + 0.5;\n}\nvec3 unpackRGBToNormal( const in vec3 rgb ) {\n\treturn 2.0 * rgb.xyz - 1.0;\n}\nconst float PackUpscale = 256. / 255.;const float UnpackDownscale = 255. / 256.;\nconst vec3 PackFactors = vec3( 256. * 256. * 256., 256. * 256., 256. );\nconst vec4 UnpackFactors = UnpackDownscale / vec4( PackFactors, 1. );\nconst float ShiftRight8 = 1. / 256.;\nvec4 packDepthToRGBA( const in float v ) {\n\tvec4 r = vec4( fract( v * PackFactors ), v );\n\tr.yzw -= r.xyz * ShiftRight8;\treturn r * PackUpscale;\n}\nfloat unpackRGBAToDepth( const in vec4 v ) {\n\treturn dot( v, UnpackFactors );\n}\nvec4 pack2HalfToRGBA( vec2 v ) {\n\tvec4 r = vec4( v.x, fract( v.x * 255.0 ), v.y, fract( v.y * 255.0 ) );\n\treturn vec4( r.x - r.y / 255.0, r.y, r.z - r.w / 255.0, r.w );\n}\nvec2 unpackRGBATo2Half( vec4 v ) {\n\treturn vec2( v.x + ( v.y / 255.0 ), v.z + ( v.w / 255.0 ) );\n}\nfloat viewZToOrthographicDepth( const in float viewZ, const in float near, const in float far ) {\n\treturn ( viewZ + near ) / ( near - far );\n}\nfloat orthographicDepthToViewZ( const in float linearClipZ, const in float near, const in float far ) {\n\treturn linearClipZ * ( near - far ) - near;\n}\nfloat viewZToPerspectiveDepth( const in float viewZ, const in float near, const in float far ) {\n\treturn ( ( near + viewZ ) * far ) / ( ( far - near ) * viewZ );\n}\nfloat perspectiveDepthToViewZ( const in float invClipZ, const in float near, const in float far ) {\n\treturn ( near * far ) / ( ( far - near ) * invClipZ - far );\n}";

var premultiplied_alpha_fragment = "#ifdef PREMULTIPLIED_ALPHA\n\tgl_FragColor.rgb *= gl_FragColor.a;\n#endif";

var project_vertex = "vec4 mvPosition = vec4( transformed, 1.0 );\n#ifdef USE_INSTANCING\n\tmvPosition = instanceMatrix * mvPosition;\n#endif\nmvPosition = modelViewMatrix * mvPosition;\ngl_Position = projectionMatrix * mvPosition;";

var dithering_fragment = "#ifdef DITHERING\n\tgl_FragColor.rgb = dithering( gl_FragColor.rgb );\n#endif";

var dithering_pars_fragment = "#ifdef DITHERING\n\tvec3 dithering( vec3 color ) {\n\t\tfloat grid_position = rand( gl_FragCoord.xy );\n\t\tvec3 dither_shift_RGB = vec3( 0.25 / 255.0, -0.25 / 255.0, 0.25 / 255.0 );\n\t\tdither_shift_RGB = mix( 2.0 * dither_shift_RGB, -2.0 * dither_shift_RGB, grid_position );\n\t\treturn color + dither_shift_RGB;\n\t}\n#endif";

var roughnessmap_fragment = "float roughnessFactor = roughness;\n#ifdef USE_ROUGHNESSMAP\n\tvec4 texelRoughness = texture2D( roughnessMap, vUv );\n\troughnessFactor *= texelRoughness.g;\n#endif";

var roughnessmap_pars_fragment = "#ifdef USE_ROUGHNESSMAP\n\tuniform sampler2D roughnessMap;\n#endif";

var shadowmap_pars_fragment = "#ifdef USE_SHADOWMAP\n\t#if NUM_DIR_LIGHT_SHADOWS > 0\n\t\tuniform sampler2D directionalShadowMap[ NUM_DIR_LIGHT_SHADOWS ];\n\t\tvarying vec4 vDirectionalShadowCoord[ NUM_DIR_LIGHT_SHADOWS ];\n\t\tstruct DirectionalLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t};\n\t\tuniform DirectionalLightShadow directionalLightShadows[ NUM_DIR_LIGHT_SHADOWS ];\n\t#endif\n\t#if NUM_SPOT_LIGHT_SHADOWS > 0\n\t\tuniform sampler2D spotShadowMap[ NUM_SPOT_LIGHT_SHADOWS ];\n\t\tvarying vec4 vSpotShadowCoord[ NUM_SPOT_LIGHT_SHADOWS ];\n\t\tstruct SpotLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t};\n\t\tuniform SpotLightShadow spotLightShadows[ NUM_SPOT_LIGHT_SHADOWS ];\n\t#endif\n\t#if NUM_POINT_LIGHT_SHADOWS > 0\n\t\tuniform sampler2D pointShadowMap[ NUM_POINT_LIGHT_SHADOWS ];\n\t\tvarying vec4 vPointShadowCoord[ NUM_POINT_LIGHT_SHADOWS ];\n\t\tstruct PointLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t\tfloat shadowCameraNear;\n\t\t\tfloat shadowCameraFar;\n\t\t};\n\t\tuniform PointLightShadow pointLightShadows[ NUM_POINT_LIGHT_SHADOWS ];\n\t#endif\n\tfloat texture2DCompare( sampler2D depths, vec2 uv, float compare ) {\n\t\treturn step( compare, unpackRGBAToDepth( texture2D( depths, uv ) ) );\n\t}\n\tvec2 texture2DDistribution( sampler2D shadow, vec2 uv ) {\n\t\treturn unpackRGBATo2Half( texture2D( shadow, uv ) );\n\t}\n\tfloat VSMShadow (sampler2D shadow, vec2 uv, float compare ){\n\t\tfloat occlusion = 1.0;\n\t\tvec2 distribution = texture2DDistribution( shadow, uv );\n\t\tfloat hard_shadow = step( compare , distribution.x );\n\t\tif (hard_shadow != 1.0 ) {\n\t\t\tfloat distance = compare - distribution.x ;\n\t\t\tfloat variance = max( 0.00000, distribution.y * distribution.y );\n\t\t\tfloat softness_probability = variance / (variance + distance * distance );\t\t\tsoftness_probability = clamp( ( softness_probability - 0.3 ) / ( 0.95 - 0.3 ), 0.0, 1.0 );\t\t\tocclusion = clamp( max( hard_shadow, softness_probability ), 0.0, 1.0 );\n\t\t}\n\t\treturn occlusion;\n\t}\n\tfloat getShadow( sampler2D shadowMap, vec2 shadowMapSize, float shadowBias, float shadowRadius, vec4 shadowCoord ) {\n\t\tfloat shadow = 1.0;\n\t\tshadowCoord.xyz /= shadowCoord.w;\n\t\tshadowCoord.z += shadowBias;\n\t\tbvec4 inFrustumVec = bvec4 ( shadowCoord.x >= 0.0, shadowCoord.x <= 1.0, shadowCoord.y >= 0.0, shadowCoord.y <= 1.0 );\n\t\tbool inFrustum = all( inFrustumVec );\n\t\tbvec2 frustumTestVec = bvec2( inFrustum, shadowCoord.z <= 1.0 );\n\t\tbool frustumTest = all( frustumTestVec );\n\t\tif ( frustumTest ) {\n\t\t#if defined( SHADOWMAP_TYPE_PCF )\n\t\t\tvec2 texelSize = vec2( 1.0 ) / shadowMapSize;\n\t\t\tfloat dx0 = - texelSize.x * shadowRadius;\n\t\t\tfloat dy0 = - texelSize.y * shadowRadius;\n\t\t\tfloat dx1 = + texelSize.x * shadowRadius;\n\t\t\tfloat dy1 = + texelSize.y * shadowRadius;\n\t\t\tfloat dx2 = dx0 / 2.0;\n\t\t\tfloat dy2 = dy0 / 2.0;\n\t\t\tfloat dx3 = dx1 / 2.0;\n\t\t\tfloat dy3 = dy1 / 2.0;\n\t\t\tshadow = (\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, dy0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, dy0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx2, dy2 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy2 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx3, dy2 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx2, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy, shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx3, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx2, dy3 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy3 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx3, dy3 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, dy1 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy1 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, dy1 ), shadowCoord.z )\n\t\t\t) * ( 1.0 / 17.0 );\n\t\t#elif defined( SHADOWMAP_TYPE_PCF_SOFT )\n\t\t\tvec2 texelSize = vec2( 1.0 ) / shadowMapSize;\n\t\t\tfloat dx = texelSize.x;\n\t\t\tfloat dy = texelSize.y;\n\t\t\tvec2 uv = shadowCoord.xy;\n\t\t\tvec2 f = fract( uv * shadowMapSize + 0.5 );\n\t\t\tuv -= f * texelSize;\n\t\t\tshadow = (\n\t\t\t\ttexture2DCompare( shadowMap, uv, shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, uv + vec2( dx, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, uv + vec2( 0.0, dy ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, uv + texelSize, shadowCoord.z ) +\n\t\t\t\tmix( texture2DCompare( shadowMap, uv + vec2( -dx, 0.0 ), shadowCoord.z ), \n\t\t\t\t\t texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, 0.0 ), shadowCoord.z ),\n\t\t\t\t\t f.x ) +\n\t\t\t\tmix( texture2DCompare( shadowMap, uv + vec2( -dx, dy ), shadowCoord.z ), \n\t\t\t\t\t texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, dy ), shadowCoord.z ),\n\t\t\t\t\t f.x ) +\n\t\t\t\tmix( texture2DCompare( shadowMap, uv + vec2( 0.0, -dy ), shadowCoord.z ), \n\t\t\t\t\t texture2DCompare( shadowMap, uv + vec2( 0.0, 2.0 * dy ), shadowCoord.z ),\n\t\t\t\t\t f.y ) +\n\t\t\t\tmix( texture2DCompare( shadowMap, uv + vec2( dx, -dy ), shadowCoord.z ), \n\t\t\t\t\t texture2DCompare( shadowMap, uv + vec2( dx, 2.0 * dy ), shadowCoord.z ),\n\t\t\t\t\t f.y ) +\n\t\t\t\tmix( mix( texture2DCompare( shadowMap, uv + vec2( -dx, -dy ), shadowCoord.z ), \n\t\t\t\t\t\t  texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, -dy ), shadowCoord.z ),\n\t\t\t\t\t\t  f.x ),\n\t\t\t\t\t mix( texture2DCompare( shadowMap, uv + vec2( -dx, 2.0 * dy ), shadowCoord.z ), \n\t\t\t\t\t\t  texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, 2.0 * dy ), shadowCoord.z ),\n\t\t\t\t\t\t  f.x ),\n\t\t\t\t\t f.y )\n\t\t\t) * ( 1.0 / 9.0 );\n\t\t#elif defined( SHADOWMAP_TYPE_VSM )\n\t\t\tshadow = VSMShadow( shadowMap, shadowCoord.xy, shadowCoord.z );\n\t\t#else\n\t\t\tshadow = texture2DCompare( shadowMap, shadowCoord.xy, shadowCoord.z );\n\t\t#endif\n\t\t}\n\t\treturn shadow;\n\t}\n\tvec2 cubeToUV( vec3 v, float texelSizeY ) {\n\t\tvec3 absV = abs( v );\n\t\tfloat scaleToCube = 1.0 / max( absV.x, max( absV.y, absV.z ) );\n\t\tabsV *= scaleToCube;\n\t\tv *= scaleToCube * ( 1.0 - 2.0 * texelSizeY );\n\t\tvec2 planar = v.xy;\n\t\tfloat almostATexel = 1.5 * texelSizeY;\n\t\tfloat almostOne = 1.0 - almostATexel;\n\t\tif ( absV.z >= almostOne ) {\n\t\t\tif ( v.z > 0.0 )\n\t\t\t\tplanar.x = 4.0 - v.x;\n\t\t} else if ( absV.x >= almostOne ) {\n\t\t\tfloat signX = sign( v.x );\n\t\t\tplanar.x = v.z * signX + 2.0 * signX;\n\t\t} else if ( absV.y >= almostOne ) {\n\t\t\tfloat signY = sign( v.y );\n\t\t\tplanar.x = v.x + 2.0 * signY + 2.0;\n\t\t\tplanar.y = v.z * signY - 2.0;\n\t\t}\n\t\treturn vec2( 0.125, 0.25 ) * planar + vec2( 0.375, 0.75 );\n\t}\n\tfloat getPointShadow( sampler2D shadowMap, vec2 shadowMapSize, float shadowBias, float shadowRadius, vec4 shadowCoord, float shadowCameraNear, float shadowCameraFar ) {\n\t\tvec2 texelSize = vec2( 1.0 ) / ( shadowMapSize * vec2( 4.0, 2.0 ) );\n\t\tvec3 lightToPosition = shadowCoord.xyz;\n\t\tfloat dp = ( length( lightToPosition ) - shadowCameraNear ) / ( shadowCameraFar - shadowCameraNear );\t\tdp += shadowBias;\n\t\tvec3 bd3D = normalize( lightToPosition );\n\t\t#if defined( SHADOWMAP_TYPE_PCF ) || defined( SHADOWMAP_TYPE_PCF_SOFT ) || defined( SHADOWMAP_TYPE_VSM )\n\t\t\tvec2 offset = vec2( - 1, 1 ) * shadowRadius * texelSize.y;\n\t\t\treturn (\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xyy, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yyy, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xyx, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yyx, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xxy, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yxy, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xxx, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yxx, texelSize.y ), dp )\n\t\t\t) * ( 1.0 / 9.0 );\n\t\t#else\n\t\t\treturn texture2DCompare( shadowMap, cubeToUV( bd3D, texelSize.y ), dp );\n\t\t#endif\n\t}\n#endif";

var shadowmap_pars_vertex = "#ifdef USE_SHADOWMAP\n\t#if NUM_DIR_LIGHT_SHADOWS > 0\n\t\tuniform mat4 directionalShadowMatrix[ NUM_DIR_LIGHT_SHADOWS ];\n\t\tvarying vec4 vDirectionalShadowCoord[ NUM_DIR_LIGHT_SHADOWS ];\n\t\tstruct DirectionalLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t};\n\t\tuniform DirectionalLightShadow directionalLightShadows[ NUM_DIR_LIGHT_SHADOWS ];\n\t#endif\n\t#if NUM_SPOT_LIGHT_SHADOWS > 0\n\t\tuniform mat4 spotShadowMatrix[ NUM_SPOT_LIGHT_SHADOWS ];\n\t\tvarying vec4 vSpotShadowCoord[ NUM_SPOT_LIGHT_SHADOWS ];\n\t\tstruct SpotLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t};\n\t\tuniform SpotLightShadow spotLightShadows[ NUM_SPOT_LIGHT_SHADOWS ];\n\t#endif\n\t#if NUM_POINT_LIGHT_SHADOWS > 0\n\t\tuniform mat4 pointShadowMatrix[ NUM_POINT_LIGHT_SHADOWS ];\n\t\tvarying vec4 vPointShadowCoord[ NUM_POINT_LIGHT_SHADOWS ];\n\t\tstruct PointLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t\tfloat shadowCameraNear;\n\t\t\tfloat shadowCameraFar;\n\t\t};\n\t\tuniform PointLightShadow pointLightShadows[ NUM_POINT_LIGHT_SHADOWS ];\n\t#endif\n#endif";

var shadowmap_vertex = "#ifdef USE_SHADOWMAP\n\t#if NUM_DIR_LIGHT_SHADOWS > 0 || NUM_SPOT_LIGHT_SHADOWS > 0 || NUM_POINT_LIGHT_SHADOWS > 0\n\t\tvec3 shadowWorldNormal = inverseTransformDirection( transformedNormal, viewMatrix );\n\t\tvec4 shadowWorldPosition;\n\t#endif\n\t#if NUM_DIR_LIGHT_SHADOWS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_DIR_LIGHT_SHADOWS; i ++ ) {\n\t\tshadowWorldPosition = worldPosition + vec4( shadowWorldNormal * directionalLightShadows[ i ].shadowNormalBias, 0 );\n\t\tvDirectionalShadowCoord[ i ] = directionalShadowMatrix[ i ] * shadowWorldPosition;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n\t#if NUM_SPOT_LIGHT_SHADOWS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_SPOT_LIGHT_SHADOWS; i ++ ) {\n\t\tshadowWorldPosition = worldPosition + vec4( shadowWorldNormal * spotLightShadows[ i ].shadowNormalBias, 0 );\n\t\tvSpotShadowCoord[ i ] = spotShadowMatrix[ i ] * shadowWorldPosition;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n\t#if NUM_POINT_LIGHT_SHADOWS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_POINT_LIGHT_SHADOWS; i ++ ) {\n\t\tshadowWorldPosition = worldPosition + vec4( shadowWorldNormal * pointLightShadows[ i ].shadowNormalBias, 0 );\n\t\tvPointShadowCoord[ i ] = pointShadowMatrix[ i ] * shadowWorldPosition;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n#endif";

var shadowmask_pars_fragment = "float getShadowMask() {\n\tfloat shadow = 1.0;\n\t#ifdef USE_SHADOWMAP\n\t#if NUM_DIR_LIGHT_SHADOWS > 0\n\tDirectionalLightShadow directionalLight;\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_DIR_LIGHT_SHADOWS; i ++ ) {\n\t\tdirectionalLight = directionalLightShadows[ i ];\n\t\tshadow *= receiveShadow ? getShadow( directionalShadowMap[ i ], directionalLight.shadowMapSize, directionalLight.shadowBias, directionalLight.shadowRadius, vDirectionalShadowCoord[ i ] ) : 1.0;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n\t#if NUM_SPOT_LIGHT_SHADOWS > 0\n\tSpotLightShadow spotLight;\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_SPOT_LIGHT_SHADOWS; i ++ ) {\n\t\tspotLight = spotLightShadows[ i ];\n\t\tshadow *= receiveShadow ? getShadow( spotShadowMap[ i ], spotLight.shadowMapSize, spotLight.shadowBias, spotLight.shadowRadius, vSpotShadowCoord[ i ] ) : 1.0;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n\t#if NUM_POINT_LIGHT_SHADOWS > 0\n\tPointLightShadow pointLight;\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_POINT_LIGHT_SHADOWS; i ++ ) {\n\t\tpointLight = pointLightShadows[ i ];\n\t\tshadow *= receiveShadow ? getPointShadow( pointShadowMap[ i ], pointLight.shadowMapSize, pointLight.shadowBias, pointLight.shadowRadius, vPointShadowCoord[ i ], pointLight.shadowCameraNear, pointLight.shadowCameraFar ) : 1.0;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n\t#endif\n\treturn shadow;\n}";

var skinbase_vertex = "#ifdef USE_SKINNING\n\tmat4 boneMatX = getBoneMatrix( skinIndex.x );\n\tmat4 boneMatY = getBoneMatrix( skinIndex.y );\n\tmat4 boneMatZ = getBoneMatrix( skinIndex.z );\n\tmat4 boneMatW = getBoneMatrix( skinIndex.w );\n#endif";

var skinning_pars_vertex = "#ifdef USE_SKINNING\n\tuniform mat4 bindMatrix;\n\tuniform mat4 bindMatrixInverse;\n\t#ifdef BONE_TEXTURE\n\t\tuniform highp sampler2D boneTexture;\n\t\tuniform int boneTextureSize;\n\t\tmat4 getBoneMatrix( const in float i ) {\n\t\t\tfloat j = i * 4.0;\n\t\t\tfloat x = mod( j, float( boneTextureSize ) );\n\t\t\tfloat y = floor( j / float( boneTextureSize ) );\n\t\t\tfloat dx = 1.0 / float( boneTextureSize );\n\t\t\tfloat dy = 1.0 / float( boneTextureSize );\n\t\t\ty = dy * ( y + 0.5 );\n\t\t\tvec4 v1 = texture2D( boneTexture, vec2( dx * ( x + 0.5 ), y ) );\n\t\t\tvec4 v2 = texture2D( boneTexture, vec2( dx * ( x + 1.5 ), y ) );\n\t\t\tvec4 v3 = texture2D( boneTexture, vec2( dx * ( x + 2.5 ), y ) );\n\t\t\tvec4 v4 = texture2D( boneTexture, vec2( dx * ( x + 3.5 ), y ) );\n\t\t\tmat4 bone = mat4( v1, v2, v3, v4 );\n\t\t\treturn bone;\n\t\t}\n\t#else\n\t\tuniform mat4 boneMatrices[ MAX_BONES ];\n\t\tmat4 getBoneMatrix( const in float i ) {\n\t\t\tmat4 bone = boneMatrices[ int(i) ];\n\t\t\treturn bone;\n\t\t}\n\t#endif\n#endif";

var skinning_vertex = "#ifdef USE_SKINNING\n\tvec4 skinVertex = bindMatrix * vec4( transformed, 1.0 );\n\tvec4 skinned = vec4( 0.0 );\n\tskinned += boneMatX * skinVertex * skinWeight.x;\n\tskinned += boneMatY * skinVertex * skinWeight.y;\n\tskinned += boneMatZ * skinVertex * skinWeight.z;\n\tskinned += boneMatW * skinVertex * skinWeight.w;\n\ttransformed = ( bindMatrixInverse * skinned ).xyz;\n#endif";

var skinnormal_vertex = "#ifdef USE_SKINNING\n\tmat4 skinMatrix = mat4( 0.0 );\n\tskinMatrix += skinWeight.x * boneMatX;\n\tskinMatrix += skinWeight.y * boneMatY;\n\tskinMatrix += skinWeight.z * boneMatZ;\n\tskinMatrix += skinWeight.w * boneMatW;\n\tskinMatrix = bindMatrixInverse * skinMatrix * bindMatrix;\n\tobjectNormal = vec4( skinMatrix * vec4( objectNormal, 0.0 ) ).xyz;\n\t#ifdef USE_TANGENT\n\t\tobjectTangent = vec4( skinMatrix * vec4( objectTangent, 0.0 ) ).xyz;\n\t#endif\n#endif";

var specularmap_fragment = "float specularStrength;\n#ifdef USE_SPECULARMAP\n\tvec4 texelSpecular = texture2D( specularMap, vUv );\n\tspecularStrength = texelSpecular.r;\n#else\n\tspecularStrength = 1.0;\n#endif";

var specularmap_pars_fragment = "#ifdef USE_SPECULARMAP\n\tuniform sampler2D specularMap;\n#endif";

var tonemapping_fragment = "#if defined( TONE_MAPPING )\n\tgl_FragColor.rgb = toneMapping( gl_FragColor.rgb );\n#endif";

var tonemapping_pars_fragment = "#ifndef saturate\n#define saturate( a ) clamp( a, 0.0, 1.0 )\n#endif\nuniform float toneMappingExposure;\nvec3 LinearToneMapping( vec3 color ) {\n\treturn toneMappingExposure * color;\n}\nvec3 ReinhardToneMapping( vec3 color ) {\n\tcolor *= toneMappingExposure;\n\treturn saturate( color / ( vec3( 1.0 ) + color ) );\n}\nvec3 OptimizedCineonToneMapping( vec3 color ) {\n\tcolor *= toneMappingExposure;\n\tcolor = max( vec3( 0.0 ), color - 0.004 );\n\treturn pow( ( color * ( 6.2 * color + 0.5 ) ) / ( color * ( 6.2 * color + 1.7 ) + 0.06 ), vec3( 2.2 ) );\n}\nvec3 RRTAndODTFit( vec3 v ) {\n\tvec3 a = v * ( v + 0.0245786 ) - 0.000090537;\n\tvec3 b = v * ( 0.983729 * v + 0.4329510 ) + 0.238081;\n\treturn a / b;\n}\nvec3 ACESFilmicToneMapping( vec3 color ) {\n\tconst mat3 ACESInputMat = mat3(\n\t\tvec3( 0.59719, 0.07600, 0.02840 ),\t\tvec3( 0.35458, 0.90834, 0.13383 ),\n\t\tvec3( 0.04823, 0.01566, 0.83777 )\n\t);\n\tconst mat3 ACESOutputMat = mat3(\n\t\tvec3(  1.60475, -0.10208, -0.00327 ),\t\tvec3( -0.53108,  1.10813, -0.07276 ),\n\t\tvec3( -0.07367, -0.00605,  1.07602 )\n\t);\n\tcolor *= toneMappingExposure / 0.6;\n\tcolor = ACESInputMat * color;\n\tcolor = RRTAndODTFit( color );\n\tcolor = ACESOutputMat * color;\n\treturn saturate( color );\n}\nvec3 CustomToneMapping( vec3 color ) { return color; }";

var transmission_fragment = "#ifdef USE_TRANSMISSION\n\tfloat transmissionAlpha = 1.0;\n\tfloat transmissionFactor = transmission;\n\tfloat thicknessFactor = thickness;\n\t#ifdef USE_TRANSMISSIONMAP\n\t\ttransmissionFactor *= texture2D( transmissionMap, vUv ).r;\n\t#endif\n\t#ifdef USE_THICKNESSMAP\n\t\tthicknessFactor *= texture2D( thicknessMap, vUv ).g;\n\t#endif\n\tvec3 pos = vWorldPosition;\n\tvec3 v = normalize( cameraPosition - pos );\n\tvec3 n = inverseTransformDirection( normal, viewMatrix );\n\tvec4 transmission = getIBLVolumeRefraction(\n\t\tn, v, roughnessFactor, material.diffuseColor, material.specularColor, material.specularF90,\n\t\tpos, modelMatrix, viewMatrix, projectionMatrix, ior, thicknessFactor,\n\t\tattenuationColor, attenuationDistance );\n\ttotalDiffuse = mix( totalDiffuse, transmission.rgb, transmissionFactor );\n\ttransmissionAlpha = mix( transmissionAlpha, transmission.a, transmissionFactor );\n#endif";

var transmission_pars_fragment = "#ifdef USE_TRANSMISSION\n\tuniform float transmission;\n\tuniform float thickness;\n\tuniform float attenuationDistance;\n\tuniform vec3 attenuationColor;\n\t#ifdef USE_TRANSMISSIONMAP\n\t\tuniform sampler2D transmissionMap;\n\t#endif\n\t#ifdef USE_THICKNESSMAP\n\t\tuniform sampler2D thicknessMap;\n\t#endif\n\tuniform vec2 transmissionSamplerSize;\n\tuniform sampler2D transmissionSamplerMap;\n\tuniform mat4 modelMatrix;\n\tuniform mat4 projectionMatrix;\n\tvarying vec3 vWorldPosition;\n\tvec3 getVolumeTransmissionRay( const in vec3 n, const in vec3 v, const in float thickness, const in float ior, const in mat4 modelMatrix ) {\n\t\tvec3 refractionVector = refract( - v, normalize( n ), 1.0 / ior );\n\t\tvec3 modelScale;\n\t\tmodelScale.x = length( vec3( modelMatrix[ 0 ].xyz ) );\n\t\tmodelScale.y = length( vec3( modelMatrix[ 1 ].xyz ) );\n\t\tmodelScale.z = length( vec3( modelMatrix[ 2 ].xyz ) );\n\t\treturn normalize( refractionVector ) * thickness * modelScale;\n\t}\n\tfloat applyIorToRoughness( const in float roughness, const in float ior ) {\n\t\treturn roughness * clamp( ior * 2.0 - 2.0, 0.0, 1.0 );\n\t}\n\tvec4 getTransmissionSample( const in vec2 fragCoord, const in float roughness, const in float ior ) {\n\t\tfloat framebufferLod = log2( transmissionSamplerSize.x ) * applyIorToRoughness( roughness, ior );\n\t\t#ifdef texture2DLodEXT\n\t\t\treturn texture2DLodEXT( transmissionSamplerMap, fragCoord.xy, framebufferLod );\n\t\t#else\n\t\t\treturn texture2D( transmissionSamplerMap, fragCoord.xy, framebufferLod );\n\t\t#endif\n\t}\n\tvec3 applyVolumeAttenuation( const in vec3 radiance, const in float transmissionDistance, const in vec3 attenuationColor, const in float attenuationDistance ) {\n\t\tif ( attenuationDistance == 0.0 ) {\n\t\t\treturn radiance;\n\t\t} else {\n\t\t\tvec3 attenuationCoefficient = -log( attenuationColor ) / attenuationDistance;\n\t\t\tvec3 transmittance = exp( - attenuationCoefficient * transmissionDistance );\t\t\treturn transmittance * radiance;\n\t\t}\n\t}\n\tvec4 getIBLVolumeRefraction( const in vec3 n, const in vec3 v, const in float roughness, const in vec3 diffuseColor,\n\t\tconst in vec3 specularColor, const in float specularF90, const in vec3 position, const in mat4 modelMatrix,\n\t\tconst in mat4 viewMatrix, const in mat4 projMatrix, const in float ior, const in float thickness,\n\t\tconst in vec3 attenuationColor, const in float attenuationDistance ) {\n\t\tvec3 transmissionRay = getVolumeTransmissionRay( n, v, thickness, ior, modelMatrix );\n\t\tvec3 refractedRayExit = position + transmissionRay;\n\t\tvec4 ndcPos = projMatrix * viewMatrix * vec4( refractedRayExit, 1.0 );\n\t\tvec2 refractionCoords = ndcPos.xy / ndcPos.w;\n\t\trefractionCoords += 1.0;\n\t\trefractionCoords /= 2.0;\n\t\tvec4 transmittedLight = getTransmissionSample( refractionCoords, roughness, ior );\n\t\tvec3 attenuatedColor = applyVolumeAttenuation( transmittedLight.rgb, length( transmissionRay ), attenuationColor, attenuationDistance );\n\t\tvec3 F = EnvironmentBRDF( n, v, specularColor, specularF90, roughness );\n\t\treturn vec4( ( 1.0 - F ) * attenuatedColor * diffuseColor, transmittedLight.a );\n\t}\n#endif";

var uv_pars_fragment = "#if ( defined( USE_UV ) && ! defined( UVS_VERTEX_ONLY ) )\n\tvarying vec2 vUv;\n#endif";

var uv_pars_vertex = "#ifdef USE_UV\n\t#ifdef UVS_VERTEX_ONLY\n\t\tvec2 vUv;\n\t#else\n\t\tvarying vec2 vUv;\n\t#endif\n\tuniform mat3 uvTransform;\n#endif";

var uv_vertex = "#ifdef USE_UV\n\tvUv = ( uvTransform * vec3( uv, 1 ) ).xy;\n#endif";

var uv2_pars_fragment = "#if defined( USE_LIGHTMAP ) || defined( USE_AOMAP )\n\tvarying vec2 vUv2;\n#endif";

var uv2_pars_vertex = "#if defined( USE_LIGHTMAP ) || defined( USE_AOMAP )\n\tattribute vec2 uv2;\n\tvarying vec2 vUv2;\n\tuniform mat3 uv2Transform;\n#endif";

var uv2_vertex = "#if defined( USE_LIGHTMAP ) || defined( USE_AOMAP )\n\tvUv2 = ( uv2Transform * vec3( uv2, 1 ) ).xy;\n#endif";

var worldpos_vertex = "#if defined( USE_ENVMAP ) || defined( DISTANCE ) || defined ( USE_SHADOWMAP ) || defined ( USE_TRANSMISSION )\n\tvec4 worldPosition = vec4( transformed, 1.0 );\n\t#ifdef USE_INSTANCING\n\t\tworldPosition = instanceMatrix * worldPosition;\n\t#endif\n\tworldPosition = modelMatrix * worldPosition;\n#endif";

const vertex$g = "varying vec2 vUv;\nuniform mat3 uvTransform;\nvoid main() {\n\tvUv = ( uvTransform * vec3( uv, 1 ) ).xy;\n\tgl_Position = vec4( position.xy, 1.0, 1.0 );\n}";

const fragment$g = "uniform sampler2D t2D;\nvarying vec2 vUv;\nvoid main() {\n\tgl_FragColor = texture2D( t2D, vUv );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n}";

const vertex$f = "varying vec3 vWorldDirection;\n#include <common>\nvoid main() {\n\tvWorldDirection = transformDirection( position, modelMatrix );\n\t#include <begin_vertex>\n\t#include <project_vertex>\n\tgl_Position.z = gl_Position.w;\n}";

const fragment$f = "#include <envmap_common_pars_fragment>\nuniform float opacity;\nvarying vec3 vWorldDirection;\n#include <cube_uv_reflection_fragment>\nvoid main() {\n\tvec3 vReflect = vWorldDirection;\n\t#include <envmap_fragment>\n\tgl_FragColor = envColor;\n\tgl_FragColor.a *= opacity;\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n}";

const vertex$e = "#include <common>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvarying vec2 vHighPrecisionZW;\nvoid main() {\n\t#include <uv_vertex>\n\t#include <skinbase_vertex>\n\t#ifdef USE_DISPLACEMENTMAP\n\t\t#include <beginnormal_vertex>\n\t\t#include <morphnormal_vertex>\n\t\t#include <skinnormal_vertex>\n\t#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvHighPrecisionZW = gl_Position.zw;\n}";

const fragment$e = "#if DEPTH_PACKING == 3200\n\tuniform float opacity;\n#endif\n#include <common>\n#include <packing>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvarying vec2 vHighPrecisionZW;\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( 1.0 );\n\t#if DEPTH_PACKING == 3200\n\t\tdiffuseColor.a = opacity;\n\t#endif\n\t#include <map_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <logdepthbuf_fragment>\n\tfloat fragCoordZ = 0.5 * vHighPrecisionZW[0] / vHighPrecisionZW[1] + 0.5;\n\t#if DEPTH_PACKING == 3200\n\t\tgl_FragColor = vec4( vec3( 1.0 - fragCoordZ ), opacity );\n\t#elif DEPTH_PACKING == 3201\n\t\tgl_FragColor = packDepthToRGBA( fragCoordZ );\n\t#endif\n}";

const vertex$d = "#define DISTANCE\nvarying vec3 vWorldPosition;\n#include <common>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <skinbase_vertex>\n\t#ifdef USE_DISPLACEMENTMAP\n\t\t#include <beginnormal_vertex>\n\t\t#include <morphnormal_vertex>\n\t\t#include <skinnormal_vertex>\n\t#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <worldpos_vertex>\n\t#include <clipping_planes_vertex>\n\tvWorldPosition = worldPosition.xyz;\n}";

const fragment$d = "#define DISTANCE\nuniform vec3 referencePosition;\nuniform float nearDistance;\nuniform float farDistance;\nvarying vec3 vWorldPosition;\n#include <common>\n#include <packing>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main () {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( 1.0 );\n\t#include <map_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\tfloat dist = length( vWorldPosition - referencePosition );\n\tdist = ( dist - nearDistance ) / ( farDistance - nearDistance );\n\tdist = saturate( dist );\n\tgl_FragColor = packDepthToRGBA( dist );\n}";

const vertex$c = "varying vec3 vWorldDirection;\n#include <common>\nvoid main() {\n\tvWorldDirection = transformDirection( position, modelMatrix );\n\t#include <begin_vertex>\n\t#include <project_vertex>\n}";

const fragment$c = "uniform sampler2D tEquirect;\nvarying vec3 vWorldDirection;\n#include <common>\nvoid main() {\n\tvec3 direction = normalize( vWorldDirection );\n\tvec2 sampleUV = equirectUv( direction );\n\tgl_FragColor = texture2D( tEquirect, sampleUV );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n}";

const vertex$b = "uniform float scale;\nattribute float lineDistance;\nvarying float vLineDistance;\n#include <common>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\tvLineDistance = scale * lineDistance;\n\t#include <color_vertex>\n\t#include <morphcolor_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <fog_vertex>\n}";

const fragment$b = "uniform vec3 diffuse;\nuniform float opacity;\nuniform float dashSize;\nuniform float totalSize;\nvarying float vLineDistance;\n#include <common>\n#include <color_pars_fragment>\n#include <fog_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tif ( mod( vLineDistance, totalSize ) > dashSize ) {\n\t\tdiscard;\n\t}\n\tvec3 outgoingLight = vec3( 0.0 );\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <color_fragment>\n\toutgoingLight = diffuseColor.rgb;\n\t#include <output_fragment>\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n}";

const vertex$a = "#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <envmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <morphcolor_vertex>\n\t#if defined ( USE_ENVMAP ) || defined ( USE_SKINNING )\n\t\t#include <beginnormal_vertex>\n\t\t#include <morphnormal_vertex>\n\t\t#include <skinbase_vertex>\n\t\t#include <skinnormal_vertex>\n\t\t#include <defaultnormal_vertex>\n\t#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <worldpos_vertex>\n\t#include <envmap_vertex>\n\t#include <fog_vertex>\n}";

const fragment$a = "uniform vec3 diffuse;\nuniform float opacity;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\n#include <common>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <envmap_common_pars_fragment>\n#include <envmap_pars_fragment>\n#include <cube_uv_reflection_fragment>\n#include <fog_pars_fragment>\n#include <specularmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <specularmap_fragment>\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\t#ifdef USE_LIGHTMAP\n\t\tvec4 lightMapTexel= texture2D( lightMap, vUv2 );\n\t\treflectedLight.indirectDiffuse += lightMapTexel.rgb * lightMapIntensity;\n\t#else\n\t\treflectedLight.indirectDiffuse += vec3( 1.0 );\n\t#endif\n\t#include <aomap_fragment>\n\treflectedLight.indirectDiffuse *= diffuseColor.rgb;\n\tvec3 outgoingLight = reflectedLight.indirectDiffuse;\n\t#include <envmap_fragment>\n\t#include <output_fragment>\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";

const vertex$9 = "#define LAMBERT\nvarying vec3 vLightFront;\nvarying vec3 vIndirectFront;\n#ifdef DOUBLE_SIDED\n\tvarying vec3 vLightBack;\n\tvarying vec3 vIndirectBack;\n#endif\n#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <envmap_pars_vertex>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <morphcolor_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <worldpos_vertex>\n\t#include <envmap_vertex>\n\t#include <lights_lambert_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}";

const fragment$9 = "uniform vec3 diffuse;\nuniform vec3 emissive;\nuniform float opacity;\nvarying vec3 vLightFront;\nvarying vec3 vIndirectFront;\n#ifdef DOUBLE_SIDED\n\tvarying vec3 vLightBack;\n\tvarying vec3 vIndirectBack;\n#endif\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <envmap_common_pars_fragment>\n#include <envmap_pars_fragment>\n#include <cube_uv_reflection_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <fog_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <shadowmask_pars_fragment>\n#include <specularmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <specularmap_fragment>\n\t#include <emissivemap_fragment>\n\t#ifdef DOUBLE_SIDED\n\t\treflectedLight.indirectDiffuse += ( gl_FrontFacing ) ? vIndirectFront : vIndirectBack;\n\t#else\n\t\treflectedLight.indirectDiffuse += vIndirectFront;\n\t#endif\n\t#include <lightmap_fragment>\n\treflectedLight.indirectDiffuse *= BRDF_Lambert( diffuseColor.rgb );\n\t#ifdef DOUBLE_SIDED\n\t\treflectedLight.directDiffuse = ( gl_FrontFacing ) ? vLightFront : vLightBack;\n\t#else\n\t\treflectedLight.directDiffuse = vLightFront;\n\t#endif\n\treflectedLight.directDiffuse *= BRDF_Lambert( diffuseColor.rgb ) * getShadowMask();\n\t#include <aomap_fragment>\n\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + totalEmissiveRadiance;\n\t#include <envmap_fragment>\n\t#include <output_fragment>\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";

const vertex$8 = "#define MATCAP\nvarying vec3 vViewPosition;\n#include <common>\n#include <uv_pars_vertex>\n#include <color_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <fog_pars_vertex>\n#include <normal_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <color_vertex>\n\t#include <morphcolor_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <normal_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <fog_vertex>\n\tvViewPosition = - mvPosition.xyz;\n}";

const fragment$8 = "#define MATCAP\nuniform vec3 diffuse;\nuniform float opacity;\nuniform sampler2D matcap;\nvarying vec3 vViewPosition;\n#include <common>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <fog_pars_fragment>\n#include <normal_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\tvec3 viewDir = normalize( vViewPosition );\n\tvec3 x = normalize( vec3( viewDir.z, 0.0, - viewDir.x ) );\n\tvec3 y = cross( viewDir, x );\n\tvec2 uv = vec2( dot( x, normal ), dot( y, normal ) ) * 0.495 + 0.5;\n\t#ifdef USE_MATCAP\n\t\tvec4 matcapColor = texture2D( matcap, uv );\n\t#else\n\t\tvec4 matcapColor = vec4( vec3( mix( 0.2, 0.8, uv.y ) ), 1.0 );\n\t#endif\n\tvec3 outgoingLight = diffuseColor.rgb * matcapColor.rgb;\n\t#include <output_fragment>\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";

const vertex$7 = "#define NORMAL\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( TANGENTSPACE_NORMALMAP )\n\tvarying vec3 vViewPosition;\n#endif\n#include <common>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <normal_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <normal_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( TANGENTSPACE_NORMALMAP )\n\tvViewPosition = - mvPosition.xyz;\n#endif\n}";

const fragment$7 = "#define NORMAL\nuniform float opacity;\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( TANGENTSPACE_NORMALMAP )\n\tvarying vec3 vViewPosition;\n#endif\n#include <packing>\n#include <uv_pars_fragment>\n#include <normal_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\t#include <logdepthbuf_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\tgl_FragColor = vec4( packNormalToRGB( normal ), opacity );\n\t#ifdef OPAQUE\n\t\tgl_FragColor.a = 1.0;\n\t#endif\n}";

const vertex$6 = "#define PHONG\nvarying vec3 vViewPosition;\n#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <envmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <normal_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <morphcolor_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <normal_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvViewPosition = - mvPosition.xyz;\n\t#include <worldpos_vertex>\n\t#include <envmap_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}";

const fragment$6 = "#define PHONG\nuniform vec3 diffuse;\nuniform vec3 emissive;\nuniform vec3 specular;\nuniform float shininess;\nuniform float opacity;\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <envmap_common_pars_fragment>\n#include <envmap_pars_fragment>\n#include <cube_uv_reflection_fragment>\n#include <fog_pars_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <normal_pars_fragment>\n#include <lights_phong_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <specularmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <specularmap_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\t#include <emissivemap_fragment>\n\t#include <lights_phong_fragment>\n\t#include <lights_fragment_begin>\n\t#include <lights_fragment_maps>\n\t#include <lights_fragment_end>\n\t#include <aomap_fragment>\n\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + reflectedLight.directSpecular + reflectedLight.indirectSpecular + totalEmissiveRadiance;\n\t#include <envmap_fragment>\n\t#include <output_fragment>\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";

const vertex$5 = "#define STANDARD\nvarying vec3 vViewPosition;\n#ifdef USE_TRANSMISSION\n\tvarying vec3 vWorldPosition;\n#endif\n#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <normal_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <morphcolor_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <normal_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvViewPosition = - mvPosition.xyz;\n\t#include <worldpos_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n#ifdef USE_TRANSMISSION\n\tvWorldPosition = worldPosition.xyz;\n#endif\n}";

const fragment$5 = "#define STANDARD\n#ifdef PHYSICAL\n\t#define IOR\n\t#define SPECULAR\n#endif\nuniform vec3 diffuse;\nuniform vec3 emissive;\nuniform float roughness;\nuniform float metalness;\nuniform float opacity;\n#ifdef IOR\n\tuniform float ior;\n#endif\n#ifdef SPECULAR\n\tuniform float specularIntensity;\n\tuniform vec3 specularColor;\n\t#ifdef USE_SPECULARINTENSITYMAP\n\t\tuniform sampler2D specularIntensityMap;\n\t#endif\n\t#ifdef USE_SPECULARCOLORMAP\n\t\tuniform sampler2D specularColorMap;\n\t#endif\n#endif\n#ifdef USE_CLEARCOAT\n\tuniform float clearcoat;\n\tuniform float clearcoatRoughness;\n#endif\n#ifdef USE_SHEEN\n\tuniform vec3 sheenColor;\n\tuniform float sheenRoughness;\n\t#ifdef USE_SHEENCOLORMAP\n\t\tuniform sampler2D sheenColorMap;\n\t#endif\n\t#ifdef USE_SHEENROUGHNESSMAP\n\t\tuniform sampler2D sheenRoughnessMap;\n\t#endif\n#endif\nvarying vec3 vViewPosition;\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <bsdfs>\n#include <cube_uv_reflection_fragment>\n#include <envmap_common_pars_fragment>\n#include <envmap_physical_pars_fragment>\n#include <fog_pars_fragment>\n#include <lights_pars_begin>\n#include <normal_pars_fragment>\n#include <lights_physical_pars_fragment>\n#include <transmission_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <clearcoat_pars_fragment>\n#include <roughnessmap_pars_fragment>\n#include <metalnessmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <roughnessmap_fragment>\n\t#include <metalnessmap_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\t#include <clearcoat_normal_fragment_begin>\n\t#include <clearcoat_normal_fragment_maps>\n\t#include <emissivemap_fragment>\n\t#include <lights_physical_fragment>\n\t#include <lights_fragment_begin>\n\t#include <lights_fragment_maps>\n\t#include <lights_fragment_end>\n\t#include <aomap_fragment>\n\tvec3 totalDiffuse = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse;\n\tvec3 totalSpecular = reflectedLight.directSpecular + reflectedLight.indirectSpecular;\n\t#include <transmission_fragment>\n\tvec3 outgoingLight = totalDiffuse + totalSpecular + totalEmissiveRadiance;\n\t#ifdef USE_SHEEN\n\t\tfloat sheenEnergyComp = 1.0 - 0.157 * max3( material.sheenColor );\n\t\toutgoingLight = outgoingLight * sheenEnergyComp + sheenSpecular;\n\t#endif\n\t#ifdef USE_CLEARCOAT\n\t\tfloat dotNVcc = saturate( dot( geometry.clearcoatNormal, geometry.viewDir ) );\n\t\tvec3 Fcc = F_Schlick( material.clearcoatF0, material.clearcoatF90, dotNVcc );\n\t\toutgoingLight = outgoingLight * ( 1.0 - material.clearcoat * Fcc ) + clearcoatSpecular * material.clearcoat;\n\t#endif\n\t#include <output_fragment>\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";

const vertex$4 = "#define TOON\nvarying vec3 vViewPosition;\n#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <normal_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <morphcolor_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <normal_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvViewPosition = - mvPosition.xyz;\n\t#include <worldpos_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}";

const fragment$4 = "#define TOON\nuniform vec3 diffuse;\nuniform vec3 emissive;\nuniform float opacity;\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <gradientmap_pars_fragment>\n#include <fog_pars_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <normal_pars_fragment>\n#include <lights_toon_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\t#include <emissivemap_fragment>\n\t#include <lights_toon_fragment>\n\t#include <lights_fragment_begin>\n\t#include <lights_fragment_maps>\n\t#include <lights_fragment_end>\n\t#include <aomap_fragment>\n\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + totalEmissiveRadiance;\n\t#include <output_fragment>\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";

const vertex$3 = "uniform float size;\nuniform float scale;\n#include <common>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <color_vertex>\n\t#include <morphcolor_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <project_vertex>\n\tgl_PointSize = size;\n\t#ifdef USE_SIZEATTENUATION\n\t\tbool isPerspective = isPerspectiveMatrix( projectionMatrix );\n\t\tif ( isPerspective ) gl_PointSize *= ( scale / - mvPosition.z );\n\t#endif\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <worldpos_vertex>\n\t#include <fog_vertex>\n}";

const fragment$3 = "uniform vec3 diffuse;\nuniform float opacity;\n#include <common>\n#include <color_pars_fragment>\n#include <map_particle_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <fog_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec3 outgoingLight = vec3( 0.0 );\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <map_particle_fragment>\n\t#include <color_fragment>\n\t#include <alphatest_fragment>\n\toutgoingLight = diffuseColor.rgb;\n\t#include <output_fragment>\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n}";

const vertex$2 = "#include <common>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\nvoid main() {\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <project_vertex>\n\t#include <worldpos_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}";

const fragment$2 = "uniform vec3 color;\nuniform float opacity;\n#include <common>\n#include <packing>\n#include <fog_pars_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <shadowmap_pars_fragment>\n#include <shadowmask_pars_fragment>\nvoid main() {\n\tgl_FragColor = vec4( color, opacity * ( 1.0 - getShadowMask() ) );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n}";

const vertex$1 = "uniform float rotation;\nuniform vec2 center;\n#include <common>\n#include <uv_pars_vertex>\n#include <fog_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\tvec4 mvPosition = modelViewMatrix * vec4( 0.0, 0.0, 0.0, 1.0 );\n\tvec2 scale;\n\tscale.x = length( vec3( modelMatrix[ 0 ].x, modelMatrix[ 0 ].y, modelMatrix[ 0 ].z ) );\n\tscale.y = length( vec3( modelMatrix[ 1 ].x, modelMatrix[ 1 ].y, modelMatrix[ 1 ].z ) );\n\t#ifndef USE_SIZEATTENUATION\n\t\tbool isPerspective = isPerspectiveMatrix( projectionMatrix );\n\t\tif ( isPerspective ) scale *= - mvPosition.z;\n\t#endif\n\tvec2 alignedPosition = ( position.xy - ( center - vec2( 0.5 ) ) ) * scale;\n\tvec2 rotatedPosition;\n\trotatedPosition.x = cos( rotation ) * alignedPosition.x - sin( rotation ) * alignedPosition.y;\n\trotatedPosition.y = sin( rotation ) * alignedPosition.x + cos( rotation ) * alignedPosition.y;\n\tmvPosition.xy += rotatedPosition;\n\tgl_Position = projectionMatrix * mvPosition;\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <fog_vertex>\n}";

const fragment$1 = "uniform vec3 diffuse;\nuniform float opacity;\n#include <common>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <fog_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec3 outgoingLight = vec3( 0.0 );\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\toutgoingLight = diffuseColor.rgb;\n\t#include <output_fragment>\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n}";

const ShaderChunk = {
	alphamap_fragment: alphamap_fragment,
	alphamap_pars_fragment: alphamap_pars_fragment,
	alphatest_fragment: alphatest_fragment,
	alphatest_pars_fragment: alphatest_pars_fragment,
	aomap_fragment: aomap_fragment,
	aomap_pars_fragment: aomap_pars_fragment,
	begin_vertex: begin_vertex,
	beginnormal_vertex: beginnormal_vertex,
	bsdfs: bsdfs,
	bumpmap_pars_fragment: bumpmap_pars_fragment,
	clipping_planes_fragment: clipping_planes_fragment,
	clipping_planes_pars_fragment: clipping_planes_pars_fragment,
	clipping_planes_pars_vertex: clipping_planes_pars_vertex,
	clipping_planes_vertex: clipping_planes_vertex,
	color_fragment: color_fragment,
	color_pars_fragment: color_pars_fragment,
	color_pars_vertex: color_pars_vertex,
	color_vertex: color_vertex,
	common: common,
	cube_uv_reflection_fragment: cube_uv_reflection_fragment,
	defaultnormal_vertex: defaultnormal_vertex,
	displacementmap_pars_vertex: displacementmap_pars_vertex,
	displacementmap_vertex: displacementmap_vertex,
	emissivemap_fragment: emissivemap_fragment,
	emissivemap_pars_fragment: emissivemap_pars_fragment,
	encodings_fragment: encodings_fragment,
	encodings_pars_fragment: encodings_pars_fragment,
	envmap_fragment: envmap_fragment,
	envmap_common_pars_fragment: envmap_common_pars_fragment,
	envmap_pars_fragment: envmap_pars_fragment,
	envmap_pars_vertex: envmap_pars_vertex,
	envmap_physical_pars_fragment: envmap_physical_pars_fragment,
	envmap_vertex: envmap_vertex,
	fog_vertex: fog_vertex,
	fog_pars_vertex: fog_pars_vertex,
	fog_fragment: fog_fragment,
	fog_pars_fragment: fog_pars_fragment,
	gradientmap_pars_fragment: gradientmap_pars_fragment,
	lightmap_fragment: lightmap_fragment,
	lightmap_pars_fragment: lightmap_pars_fragment,
	lights_lambert_vertex: lights_lambert_vertex,
	lights_pars_begin: lights_pars_begin,
	lights_toon_fragment: lights_toon_fragment,
	lights_toon_pars_fragment: lights_toon_pars_fragment,
	lights_phong_fragment: lights_phong_fragment,
	lights_phong_pars_fragment: lights_phong_pars_fragment,
	lights_physical_fragment: lights_physical_fragment,
	lights_physical_pars_fragment: lights_physical_pars_fragment,
	lights_fragment_begin: lights_fragment_begin,
	lights_fragment_maps: lights_fragment_maps,
	lights_fragment_end: lights_fragment_end,
	logdepthbuf_fragment: logdepthbuf_fragment,
	logdepthbuf_pars_fragment: logdepthbuf_pars_fragment,
	logdepthbuf_pars_vertex: logdepthbuf_pars_vertex,
	logdepthbuf_vertex: logdepthbuf_vertex,
	map_fragment: map_fragment,
	map_pars_fragment: map_pars_fragment,
	map_particle_fragment: map_particle_fragment,
	map_particle_pars_fragment: map_particle_pars_fragment,
	metalnessmap_fragment: metalnessmap_fragment,
	metalnessmap_pars_fragment: metalnessmap_pars_fragment,
	morphcolor_vertex: morphcolor_vertex,
	morphnormal_vertex: morphnormal_vertex,
	morphtarget_pars_vertex: morphtarget_pars_vertex,
	morphtarget_vertex: morphtarget_vertex,
	normal_fragment_begin: normal_fragment_begin,
	normal_fragment_maps: normal_fragment_maps,
	normal_pars_fragment: normal_pars_fragment,
	normal_pars_vertex: normal_pars_vertex,
	normal_vertex: normal_vertex,
	normalmap_pars_fragment: normalmap_pars_fragment,
	clearcoat_normal_fragment_begin: clearcoat_normal_fragment_begin,
	clearcoat_normal_fragment_maps: clearcoat_normal_fragment_maps,
	clearcoat_pars_fragment: clearcoat_pars_fragment,
	output_fragment: output_fragment,
	packing: packing,
	premultiplied_alpha_fragment: premultiplied_alpha_fragment,
	project_vertex: project_vertex,
	dithering_fragment: dithering_fragment,
	dithering_pars_fragment: dithering_pars_fragment,
	roughnessmap_fragment: roughnessmap_fragment,
	roughnessmap_pars_fragment: roughnessmap_pars_fragment,
	shadowmap_pars_fragment: shadowmap_pars_fragment,
	shadowmap_pars_vertex: shadowmap_pars_vertex,
	shadowmap_vertex: shadowmap_vertex,
	shadowmask_pars_fragment: shadowmask_pars_fragment,
	skinbase_vertex: skinbase_vertex,
	skinning_pars_vertex: skinning_pars_vertex,
	skinning_vertex: skinning_vertex,
	skinnormal_vertex: skinnormal_vertex,
	specularmap_fragment: specularmap_fragment,
	specularmap_pars_fragment: specularmap_pars_fragment,
	tonemapping_fragment: tonemapping_fragment,
	tonemapping_pars_fragment: tonemapping_pars_fragment,
	transmission_fragment: transmission_fragment,
	transmission_pars_fragment: transmission_pars_fragment,
	uv_pars_fragment: uv_pars_fragment,
	uv_pars_vertex: uv_pars_vertex,
	uv_vertex: uv_vertex,
	uv2_pars_fragment: uv2_pars_fragment,
	uv2_pars_vertex: uv2_pars_vertex,
	uv2_vertex: uv2_vertex,
	worldpos_vertex: worldpos_vertex,

	background_vert: vertex$g,
	background_frag: fragment$g,
	cube_vert: vertex$f,
	cube_frag: fragment$f,
	depth_vert: vertex$e,
	depth_frag: fragment$e,
	distanceRGBA_vert: vertex$d,
	distanceRGBA_frag: fragment$d,
	equirect_vert: vertex$c,
	equirect_frag: fragment$c,
	linedashed_vert: vertex$b,
	linedashed_frag: fragment$b,
	meshbasic_vert: vertex$a,
	meshbasic_frag: fragment$a,
	meshlambert_vert: vertex$9,
	meshlambert_frag: fragment$9,
	meshmatcap_vert: vertex$8,
	meshmatcap_frag: fragment$8,
	meshnormal_vert: vertex$7,
	meshnormal_frag: fragment$7,
	meshphong_vert: vertex$6,
	meshphong_frag: fragment$6,
	meshphysical_vert: vertex$5,
	meshphysical_frag: fragment$5,
	meshtoon_vert: vertex$4,
	meshtoon_frag: fragment$4,
	points_vert: vertex$3,
	points_frag: fragment$3,
	shadow_vert: vertex$2,
	shadow_frag: fragment$2,
	sprite_vert: vertex$1,
	sprite_frag: fragment$1
};

/**
 * Uniforms library for shared webgl shaders
 */

const UniformsLib = {

	common: {

		diffuse: { value: new Color( 0xffffff ) },
		opacity: { value: 1.0 },

		map: { value: null },
		uvTransform: { value: new Matrix3() },
		uv2Transform: { value: new Matrix3() },

		alphaMap: { value: null },
		alphaTest: { value: 0 }

	},

	specularmap: {

		specularMap: { value: null },

	},

	envmap: {

		envMap: { value: null },
		flipEnvMap: { value: - 1 },
		reflectivity: { value: 1.0 }, // basic, lambert, phong
		ior: { value: 1.5 }, // standard, physical
		refractionRatio: { value: 0.98 }

	},

	aomap: {

		aoMap: { value: null },
		aoMapIntensity: { value: 1 }

	},

	lightmap: {

		lightMap: { value: null },
		lightMapIntensity: { value: 1 }

	},

	emissivemap: {

		emissiveMap: { value: null }

	},

	bumpmap: {

		bumpMap: { value: null },
		bumpScale: { value: 1 }

	},

	normalmap: {

		normalMap: { value: null },
		normalScale: { value: new Vector2( 1, 1 ) }

	},

	displacementmap: {

		displacementMap: { value: null },
		displacementScale: { value: 1 },
		displacementBias: { value: 0 }

	},

	roughnessmap: {

		roughnessMap: { value: null }

	},

	metalnessmap: {

		metalnessMap: { value: null }

	},

	gradientmap: {

		gradientMap: { value: null }

	},

	fog: {

		fogDensity: { value: 0.00025 },
		fogNear: { value: 1 },
		fogFar: { value: 2000 },
		fogColor: { value: new Color( 0xffffff ) }

	},

	lights: {

		ambientLightColor: { value: [] },

		lightProbe: { value: [] },

		directionalLights: { value: [], properties: {
			direction: {},
			color: {}
		} },

		directionalLightShadows: { value: [], properties: {
			shadowBias: {},
			shadowNormalBias: {},
			shadowRadius: {},
			shadowMapSize: {}
		} },

		directionalShadowMap: { value: [] },
		directionalShadowMatrix: { value: [] },

		spotLights: { value: [], properties: {
			color: {},
			position: {},
			direction: {},
			distance: {},
			coneCos: {},
			penumbraCos: {},
			decay: {}
		} },

		spotLightShadows: { value: [], properties: {
			shadowBias: {},
			shadowNormalBias: {},
			shadowRadius: {},
			shadowMapSize: {}
		} },

		spotShadowMap: { value: [] },
		spotShadowMatrix: { value: [] },

		pointLights: { value: [], properties: {
			color: {},
			position: {},
			decay: {},
			distance: {}
		} },

		pointLightShadows: { value: [], properties: {
			shadowBias: {},
			shadowNormalBias: {},
			shadowRadius: {},
			shadowMapSize: {},
			shadowCameraNear: {},
			shadowCameraFar: {}
		} },

		pointShadowMap: { value: [] },
		pointShadowMatrix: { value: [] },

		hemisphereLights: { value: [], properties: {
			direction: {},
			skyColor: {},
			groundColor: {}
		} },

		// TODO (abelnation): RectAreaLight BRDF data needs to be moved from example to main src
		rectAreaLights: { value: [], properties: {
			color: {},
			position: {},
			width: {},
			height: {}
		} },

		ltc_1: { value: null },
		ltc_2: { value: null }

	},

	points: {

		diffuse: { value: new Color( 0xffffff ) },
		opacity: { value: 1.0 },
		size: { value: 1.0 },
		scale: { value: 1.0 },
		map: { value: null },
		alphaMap: { value: null },
		alphaTest: { value: 0 },
		uvTransform: { value: new Matrix3() }

	},

	sprite: {

		diffuse: { value: new Color( 0xffffff ) },
		opacity: { value: 1.0 },
		center: { value: new Vector2( 0.5, 0.5 ) },
		rotation: { value: 0.0 },
		map: { value: null },
		alphaMap: { value: null },
		alphaTest: { value: 0 },
		uvTransform: { value: new Matrix3() }

	}

};

const ShaderLib = {

	basic: {

		uniforms: mergeUniforms( [
			UniformsLib.common,
			UniformsLib.specularmap,
			UniformsLib.envmap,
			UniformsLib.aomap,
			UniformsLib.lightmap,
			UniformsLib.fog
		] ),

		vertexShader: ShaderChunk.meshbasic_vert,
		fragmentShader: ShaderChunk.meshbasic_frag

	},

	lambert: {

		uniforms: mergeUniforms( [
			UniformsLib.common,
			UniformsLib.specularmap,
			UniformsLib.envmap,
			UniformsLib.aomap,
			UniformsLib.lightmap,
			UniformsLib.emissivemap,
			UniformsLib.fog,
			UniformsLib.lights,
			{
				emissive: { value: new Color( 0x000000 ) }
			}
		] ),

		vertexShader: ShaderChunk.meshlambert_vert,
		fragmentShader: ShaderChunk.meshlambert_frag

	},

	phong: {

		uniforms: mergeUniforms( [
			UniformsLib.common,
			UniformsLib.specularmap,
			UniformsLib.envmap,
			UniformsLib.aomap,
			UniformsLib.lightmap,
			UniformsLib.emissivemap,
			UniformsLib.bumpmap,
			UniformsLib.normalmap,
			UniformsLib.displacementmap,
			UniformsLib.fog,
			UniformsLib.lights,
			{
				emissive: { value: new Color( 0x000000 ) },
				specular: { value: new Color( 0x111111 ) },
				shininess: { value: 30 }
			}
		] ),

		vertexShader: ShaderChunk.meshphong_vert,
		fragmentShader: ShaderChunk.meshphong_frag

	},

	standard: {

		uniforms: mergeUniforms( [
			UniformsLib.common,
			UniformsLib.envmap,
			UniformsLib.aomap,
			UniformsLib.lightmap,
			UniformsLib.emissivemap,
			UniformsLib.bumpmap,
			UniformsLib.normalmap,
			UniformsLib.displacementmap,
			UniformsLib.roughnessmap,
			UniformsLib.metalnessmap,
			UniformsLib.fog,
			UniformsLib.lights,
			{
				emissive: { value: new Color( 0x000000 ) },
				roughness: { value: 1.0 },
				metalness: { value: 0.0 },
				envMapIntensity: { value: 1 } // temporary
			}
		] ),

		vertexShader: ShaderChunk.meshphysical_vert,
		fragmentShader: ShaderChunk.meshphysical_frag

	},

	toon: {

		uniforms: mergeUniforms( [
			UniformsLib.common,
			UniformsLib.aomap,
			UniformsLib.lightmap,
			UniformsLib.emissivemap,
			UniformsLib.bumpmap,
			UniformsLib.normalmap,
			UniformsLib.displacementmap,
			UniformsLib.gradientmap,
			UniformsLib.fog,
			UniformsLib.lights,
			{
				emissive: { value: new Color( 0x000000 ) }
			}
		] ),

		vertexShader: ShaderChunk.meshtoon_vert,
		fragmentShader: ShaderChunk.meshtoon_frag

	},

	matcap: {

		uniforms: mergeUniforms( [
			UniformsLib.common,
			UniformsLib.bumpmap,
			UniformsLib.normalmap,
			UniformsLib.displacementmap,
			UniformsLib.fog,
			{
				matcap: { value: null }
			}
		] ),

		vertexShader: ShaderChunk.meshmatcap_vert,
		fragmentShader: ShaderChunk.meshmatcap_frag

	},

	points: {

		uniforms: mergeUniforms( [
			UniformsLib.points,
			UniformsLib.fog
		] ),

		vertexShader: ShaderChunk.points_vert,
		fragmentShader: ShaderChunk.points_frag

	},

	dashed: {

		uniforms: mergeUniforms( [
			UniformsLib.common,
			UniformsLib.fog,
			{
				scale: { value: 1 },
				dashSize: { value: 1 },
				totalSize: { value: 2 }
			}
		] ),

		vertexShader: ShaderChunk.linedashed_vert,
		fragmentShader: ShaderChunk.linedashed_frag

	},

	depth: {

		uniforms: mergeUniforms( [
			UniformsLib.common,
			UniformsLib.displacementmap
		] ),

		vertexShader: ShaderChunk.depth_vert,
		fragmentShader: ShaderChunk.depth_frag

	},

	normal: {

		uniforms: mergeUniforms( [
			UniformsLib.common,
			UniformsLib.bumpmap,
			UniformsLib.normalmap,
			UniformsLib.displacementmap,
			{
				opacity: { value: 1.0 }
			}
		] ),

		vertexShader: ShaderChunk.meshnormal_vert,
		fragmentShader: ShaderChunk.meshnormal_frag

	},

	sprite: {

		uniforms: mergeUniforms( [
			UniformsLib.sprite,
			UniformsLib.fog
		] ),

		vertexShader: ShaderChunk.sprite_vert,
		fragmentShader: ShaderChunk.sprite_frag

	},

	background: {

		uniforms: {
			uvTransform: { value: new Matrix3() },
			t2D: { value: null },
		},

		vertexShader: ShaderChunk.background_vert,
		fragmentShader: ShaderChunk.background_frag

	},
	/* -------------------------------------------------------------------------
	//	Cube map shader
	 ------------------------------------------------------------------------- */

	cube: {

		uniforms: mergeUniforms( [
			UniformsLib.envmap,
			{
				opacity: { value: 1.0 }
			}
		] ),

		vertexShader: ShaderChunk.cube_vert,
		fragmentShader: ShaderChunk.cube_frag

	},

	equirect: {

		uniforms: {
			tEquirect: { value: null },
		},

		vertexShader: ShaderChunk.equirect_vert,
		fragmentShader: ShaderChunk.equirect_frag

	},

	distanceRGBA: {

		uniforms: mergeUniforms( [
			UniformsLib.common,
			UniformsLib.displacementmap,
			{
				referencePosition: { value: new Vector3() },
				nearDistance: { value: 1 },
				farDistance: { value: 1000 }
			}
		] ),

		vertexShader: ShaderChunk.distanceRGBA_vert,
		fragmentShader: ShaderChunk.distanceRGBA_frag

	},

	shadow: {

		uniforms: mergeUniforms( [
			UniformsLib.lights,
			UniformsLib.fog,
			{
				color: { value: new Color( 0x00000 ) },
				opacity: { value: 1.0 }
			},
		] ),

		vertexShader: ShaderChunk.shadow_vert,
		fragmentShader: ShaderChunk.shadow_frag

	}

};

ShaderLib.physical = {

	uniforms: mergeUniforms( [
		ShaderLib.standard.uniforms,
		{
			clearcoat: { value: 0 },
			clearcoatMap: { value: null },
			clearcoatRoughness: { value: 0 },
			clearcoatRoughnessMap: { value: null },
			clearcoatNormalScale: { value: new Vector2( 1, 1 ) },
			clearcoatNormalMap: { value: null },
			sheen: { value: 0 },
			sheenColor: { value: new Color( 0x000000 ) },
			sheenColorMap: { value: null },
			sheenRoughness: { value: 1 },
			sheenRoughnessMap: { value: null },
			transmission: { value: 0 },
			transmissionMap: { value: null },
			transmissionSamplerSize: { value: new Vector2() },
			transmissionSamplerMap: { value: null },
			thickness: { value: 0 },
			thicknessMap: { value: null },
			attenuationDistance: { value: 0 },
			attenuationColor: { value: new Color( 0x000000 ) },
			specularIntensity: { value: 1 },
			specularIntensityMap: { value: null },
			specularColor: { value: new Color( 1, 1, 1 ) },
			specularColorMap: { value: null },
		}
	] ),

	vertexShader: ShaderChunk.meshphysical_vert,
	fragmentShader: ShaderChunk.meshphysical_frag

};

function WebGLBackground( renderer, cubemaps, state, objects, alpha, premultipliedAlpha ) {

	const clearColor = new Color( 0x000000 );
	let clearAlpha = alpha === true ? 0 : 1;

	let planeMesh;
	let boxMesh;

	let currentBackground = null;
	let currentBackgroundVersion = 0;
	let currentTonemapping = null;

	function render( renderList, scene ) {

		let forceClear = false;
		let background = scene.isScene === true ? scene.background : null;

		if ( background && background.isTexture ) {

			background = cubemaps.get( background );

		}

		// Ignore background in AR
		// TODO: Reconsider this.

		const xr = renderer.xr;
		const session = xr.getSession && xr.getSession();

		if ( session && session.environmentBlendMode === 'additive' ) {

			background = null;

		}

		if ( background === null ) {

			setClear( clearColor, clearAlpha );

		} else if ( background && background.isColor ) {

			setClear( background, 1 );
			forceClear = true;

		}

		if ( renderer.autoClear || forceClear ) {

			renderer.clear( renderer.autoClearColor, renderer.autoClearDepth, renderer.autoClearStencil );

		}

		if ( background && ( background.isCubeTexture || background.mapping === CubeUVReflectionMapping ) ) {

			if ( boxMesh === undefined ) {

				boxMesh = new Mesh(
					new BoxGeometry( 1, 1, 1 ),
					new ShaderMaterial( {
						name: 'BackgroundCubeMaterial',
						uniforms: cloneUniforms( ShaderLib.cube.uniforms ),
						vertexShader: ShaderLib.cube.vertexShader,
						fragmentShader: ShaderLib.cube.fragmentShader,
						side: BackSide,
						depthTest: false,
						depthWrite: false,
						fog: false
					} )
				);

				boxMesh.geometry.deleteAttribute( 'normal' );
				boxMesh.geometry.deleteAttribute( 'uv' );

				boxMesh.onBeforeRender = function ( renderer, scene, camera ) {

					this.matrixWorld.copyPosition( camera.matrixWorld );

				};

				// enable code injection for non-built-in material
				Object.defineProperty( boxMesh.material, 'envMap', {

					get: function () {

						return this.uniforms.envMap.value;

					}

				} );

				objects.update( boxMesh );

			}

			boxMesh.material.uniforms.envMap.value = background;
			boxMesh.material.uniforms.flipEnvMap.value = ( background.isCubeTexture && background.isRenderTargetTexture === false ) ? - 1 : 1;

			if ( currentBackground !== background ||
				currentBackgroundVersion !== background.version ||
				currentTonemapping !== renderer.toneMapping ) {

				boxMesh.material.needsUpdate = true;

				currentBackground = background;
				currentBackgroundVersion = background.version;
				currentTonemapping = renderer.toneMapping;

			}

			// push to the pre-sorted opaque render list
			renderList.unshift( boxMesh, boxMesh.geometry, boxMesh.material, 0, 0, null );

		} else if ( background && background.isTexture ) {

			if ( planeMesh === undefined ) {

				planeMesh = new Mesh(
					new PlaneGeometry( 2, 2 ),
					new ShaderMaterial( {
						name: 'BackgroundMaterial',
						uniforms: cloneUniforms( ShaderLib.background.uniforms ),
						vertexShader: ShaderLib.background.vertexShader,
						fragmentShader: ShaderLib.background.fragmentShader,
						side: FrontSide,
						depthTest: false,
						depthWrite: false,
						fog: false
					} )
				);

				planeMesh.geometry.deleteAttribute( 'normal' );

				// enable code injection for non-built-in material
				Object.defineProperty( planeMesh.material, 'map', {

					get: function () {

						return this.uniforms.t2D.value;

					}

				} );

				objects.update( planeMesh );

			}

			planeMesh.material.uniforms.t2D.value = background;

			if ( background.matrixAutoUpdate === true ) {

				background.updateMatrix();

			}

			planeMesh.material.uniforms.uvTransform.value.copy( background.matrix );

			if ( currentBackground !== background ||
				currentBackgroundVersion !== background.version ||
				currentTonemapping !== renderer.toneMapping ) {

				planeMesh.material.needsUpdate = true;

				currentBackground = background;
				currentBackgroundVersion = background.version;
				currentTonemapping = renderer.toneMapping;

			}


			// push to the pre-sorted opaque render list
			renderList.unshift( planeMesh, planeMesh.geometry, planeMesh.material, 0, 0, null );

		}

	}

	function setClear( color, alpha ) {

		state.buffers.color.setClear( color.r, color.g, color.b, alpha, premultipliedAlpha );

	}

	return {

		getClearColor: function () {

			return clearColor;

		},
		setClearColor: function ( color, alpha = 1 ) {

			clearColor.set( color );
			clearAlpha = alpha;
			setClear( clearColor, clearAlpha );

		},
		getClearAlpha: function () {

			return clearAlpha;

		},
		setClearAlpha: function ( alpha ) {

			clearAlpha = alpha;
			setClear( clearColor, clearAlpha );

		},
		render: render

	};

}

function WebGLBindingStates( gl, extensions, attributes, capabilities ) {

	const maxVertexAttributes = gl.getParameter( 34921 );

	const extension = capabilities.isWebGL2 ? null : extensions.get( 'OES_vertex_array_object' );
	const vaoAvailable = capabilities.isWebGL2 || extension !== null;

	const bindingStates = {};

	const defaultState = createBindingState( null );
	let currentState = defaultState;

	function setup( object, material, program, geometry, index ) {

		let updateBuffers = false;

		if ( vaoAvailable ) {

			const state = getBindingState( geometry, program, material );

			if ( currentState !== state ) {

				currentState = state;
				bindVertexArrayObject( currentState.object );

			}

			updateBuffers = needsUpdate( geometry, index );

			if ( updateBuffers ) saveCache( geometry, index );

		} else {

			const wireframe = ( material.wireframe === true );

			if ( currentState.geometry !== geometry.id ||
				currentState.program !== program.id ||
				currentState.wireframe !== wireframe ) {

				currentState.geometry = geometry.id;
				currentState.program = program.id;
				currentState.wireframe = wireframe;

				updateBuffers = true;

			}

		}

		if ( object.isInstancedMesh === true ) {

			updateBuffers = true;

		}

		if ( index !== null ) {

			attributes.update( index, 34963 );

		}

		if ( updateBuffers ) {

			setupVertexAttributes( object, material, program, geometry );

			if ( index !== null ) {

				gl.bindBuffer( 34963, attributes.get( index ).buffer );

			}

		}

	}

	function createVertexArrayObject() {

		if ( capabilities.isWebGL2 ) return gl.createVertexArray();

		return extension.createVertexArrayOES();

	}

	function bindVertexArrayObject( vao ) {

		if ( capabilities.isWebGL2 ) return gl.bindVertexArray( vao );

		return extension.bindVertexArrayOES( vao );

	}

	function deleteVertexArrayObject( vao ) {

		if ( capabilities.isWebGL2 ) return gl.deleteVertexArray( vao );

		return extension.deleteVertexArrayOES( vao );

	}

	function getBindingState( geometry, program, material ) {

		const wireframe = ( material.wireframe === true );

		let programMap = bindingStates[ geometry.id ];

		if ( programMap === undefined ) {

			programMap = {};
			bindingStates[ geometry.id ] = programMap;

		}

		let stateMap = programMap[ program.id ];

		if ( stateMap === undefined ) {

			stateMap = {};
			programMap[ program.id ] = stateMap;

		}

		let state = stateMap[ wireframe ];

		if ( state === undefined ) {

			state = createBindingState( createVertexArrayObject() );
			stateMap[ wireframe ] = state;

		}

		return state;

	}

	function createBindingState( vao ) {

		const newAttributes = [];
		const enabledAttributes = [];
		const attributeDivisors = [];

		for ( let i = 0; i < maxVertexAttributes; i ++ ) {

			newAttributes[ i ] = 0;
			enabledAttributes[ i ] = 0;
			attributeDivisors[ i ] = 0;

		}

		return {

			// for backward compatibility on non-VAO support browser
			geometry: null,
			program: null,
			wireframe: false,

			newAttributes: newAttributes,
			enabledAttributes: enabledAttributes,
			attributeDivisors: attributeDivisors,
			object: vao,
			attributes: {},
			index: null

		};

	}

	function needsUpdate( geometry, index ) {

		const cachedAttributes = currentState.attributes;
		const geometryAttributes = geometry.attributes;

		let attributesNum = 0;

		for ( const key in geometryAttributes ) {

			const cachedAttribute = cachedAttributes[ key ];
			const geometryAttribute = geometryAttributes[ key ];

			if ( cachedAttribute === undefined ) return true;

			if ( cachedAttribute.attribute !== geometryAttribute ) return true;

			if ( cachedAttribute.data !== geometryAttribute.data ) return true;

			attributesNum ++;

		}

		if ( currentState.attributesNum !== attributesNum ) return true;

		if ( currentState.index !== index ) return true;

		return false;

	}

	function saveCache( geometry, index ) {

		const cache = {};
		const attributes = geometry.attributes;
		let attributesNum = 0;

		for ( const key in attributes ) {

			const attribute = attributes[ key ];

			const data = {};
			data.attribute = attribute;

			if ( attribute.data ) {

				data.data = attribute.data;

			}

			cache[ key ] = data;

			attributesNum ++;

		}

		currentState.attributes = cache;
		currentState.attributesNum = attributesNum;

		currentState.index = index;

	}

	function initAttributes() {

		const newAttributes = currentState.newAttributes;

		for ( let i = 0, il = newAttributes.length; i < il; i ++ ) {

			newAttributes[ i ] = 0;

		}

	}

	function enableAttribute( attribute ) {

		enableAttributeAndDivisor( attribute, 0 );

	}

	function enableAttributeAndDivisor( attribute, meshPerAttribute ) {

		const newAttributes = currentState.newAttributes;
		const enabledAttributes = currentState.enabledAttributes;
		const attributeDivisors = currentState.attributeDivisors;

		newAttributes[ attribute ] = 1;

		if ( enabledAttributes[ attribute ] === 0 ) {

			gl.enableVertexAttribArray( attribute );
			enabledAttributes[ attribute ] = 1;

		}

		if ( attributeDivisors[ attribute ] !== meshPerAttribute ) {

			const extension = capabilities.isWebGL2 ? gl : extensions.get( 'ANGLE_instanced_arrays' );

			extension[ capabilities.isWebGL2 ? 'vertexAttribDivisor' : 'vertexAttribDivisorANGLE' ]( attribute, meshPerAttribute );
			attributeDivisors[ attribute ] = meshPerAttribute;

		}

	}

	function disableUnusedAttributes() {

		const newAttributes = currentState.newAttributes;
		const enabledAttributes = currentState.enabledAttributes;

		for ( let i = 0, il = enabledAttributes.length; i < il; i ++ ) {

			if ( enabledAttributes[ i ] !== newAttributes[ i ] ) {

				gl.disableVertexAttribArray( i );
				enabledAttributes[ i ] = 0;

			}

		}

	}

	function vertexAttribPointer( index, size, type, normalized, stride, offset ) {

		if ( capabilities.isWebGL2 === true && ( type === 5124 || type === 5125 ) ) {

			gl.vertexAttribIPointer( index, size, type, stride, offset );

		} else {

			gl.vertexAttribPointer( index, size, type, normalized, stride, offset );

		}

	}

	function setupVertexAttributes( object, material, program, geometry ) {

		if ( capabilities.isWebGL2 === false && ( object.isInstancedMesh || geometry.isInstancedBufferGeometry ) ) {

			if ( extensions.get( 'ANGLE_instanced_arrays' ) === null ) return;

		}

		initAttributes();

		const geometryAttributes = geometry.attributes;

		const programAttributes = program.getAttributes();

		const materialDefaultAttributeValues = material.defaultAttributeValues;

		for ( const name in programAttributes ) {

			const programAttribute = programAttributes[ name ];

			if ( programAttribute.location >= 0 ) {

				let geometryAttribute = geometryAttributes[ name ];

				if ( geometryAttribute === undefined ) {

					if ( name === 'instanceMatrix' && object.instanceMatrix ) geometryAttribute = object.instanceMatrix;
					if ( name === 'instanceColor' && object.instanceColor ) geometryAttribute = object.instanceColor;

				}

				if ( geometryAttribute !== undefined ) {

					const normalized = geometryAttribute.normalized;
					const size = geometryAttribute.itemSize;

					const attribute = attributes.get( geometryAttribute );

					// TODO Attribute may not be available on context restore

					if ( attribute === undefined ) continue;

					const buffer = attribute.buffer;
					const type = attribute.type;
					const bytesPerElement = attribute.bytesPerElement;

					if ( geometryAttribute.isInterleavedBufferAttribute ) {

						const data = geometryAttribute.data;
						const stride = data.stride;
						const offset = geometryAttribute.offset;

						if ( data.isInstancedInterleavedBuffer ) {

							for ( let i = 0; i < programAttribute.locationSize; i ++ ) {

								enableAttributeAndDivisor( programAttribute.location + i, data.meshPerAttribute );

							}

							if ( object.isInstancedMesh !== true && geometry._maxInstanceCount === undefined ) {

								geometry._maxInstanceCount = data.meshPerAttribute * data.count;

							}

						} else {

							for ( let i = 0; i < programAttribute.locationSize; i ++ ) {

								enableAttribute( programAttribute.location + i );

							}

						}

						gl.bindBuffer( 34962, buffer );

						for ( let i = 0; i < programAttribute.locationSize; i ++ ) {

							vertexAttribPointer(
								programAttribute.location + i,
								size / programAttribute.locationSize,
								type,
								normalized,
								stride * bytesPerElement,
								( offset + ( size / programAttribute.locationSize ) * i ) * bytesPerElement
							);

						}

					} else {

						if ( geometryAttribute.isInstancedBufferAttribute ) {

							for ( let i = 0; i < programAttribute.locationSize; i ++ ) {

								enableAttributeAndDivisor( programAttribute.location + i, geometryAttribute.meshPerAttribute );

							}

							if ( object.isInstancedMesh !== true && geometry._maxInstanceCount === undefined ) {

								geometry._maxInstanceCount = geometryAttribute.meshPerAttribute * geometryAttribute.count;

							}

						} else {

							for ( let i = 0; i < programAttribute.locationSize; i ++ ) {

								enableAttribute( programAttribute.location + i );

							}

						}

						gl.bindBuffer( 34962, buffer );

						for ( let i = 0; i < programAttribute.locationSize; i ++ ) {

							vertexAttribPointer(
								programAttribute.location + i,
								size / programAttribute.locationSize,
								type,
								normalized,
								size * bytesPerElement,
								( size / programAttribute.locationSize ) * i * bytesPerElement
							);

						}

					}

				} else if ( materialDefaultAttributeValues !== undefined ) {

					const value = materialDefaultAttributeValues[ name ];

					if ( value !== undefined ) {

						switch ( value.length ) {

							case 2:
								gl.vertexAttrib2fv( programAttribute.location, value );
								break;

							case 3:
								gl.vertexAttrib3fv( programAttribute.location, value );
								break;

							case 4:
								gl.vertexAttrib4fv( programAttribute.location, value );
								break;

							default:
								gl.vertexAttrib1fv( programAttribute.location, value );

						}

					}

				}

			}

		}

		disableUnusedAttributes();

	}

	function dispose() {

		reset();

		for ( const geometryId in bindingStates ) {

			const programMap = bindingStates[ geometryId ];

			for ( const programId in programMap ) {

				const stateMap = programMap[ programId ];

				for ( const wireframe in stateMap ) {

					deleteVertexArrayObject( stateMap[ wireframe ].object );

					delete stateMap[ wireframe ];

				}

				delete programMap[ programId ];

			}

			delete bindingStates[ geometryId ];

		}

	}

	function releaseStatesOfGeometry( geometry ) {

		if ( bindingStates[ geometry.id ] === undefined ) return;

		const programMap = bindingStates[ geometry.id ];

		for ( const programId in programMap ) {

			const stateMap = programMap[ programId ];

			for ( const wireframe in stateMap ) {

				deleteVertexArrayObject( stateMap[ wireframe ].object );

				delete stateMap[ wireframe ];

			}

			delete programMap[ programId ];

		}

		delete bindingStates[ geometry.id ];

	}

	function releaseStatesOfProgram( program ) {

		for ( const geometryId in bindingStates ) {

			const programMap = bindingStates[ geometryId ];

			if ( programMap[ program.id ] === undefined ) continue;

			const stateMap = programMap[ program.id ];

			for ( const wireframe in stateMap ) {

				deleteVertexArrayObject( stateMap[ wireframe ].object );

				delete stateMap[ wireframe ];

			}

			delete programMap[ program.id ];

		}

	}

	function reset() {

		resetDefaultState();

		if ( currentState === defaultState ) return;

		currentState = defaultState;
		bindVertexArrayObject( currentState.object );

	}

	// for backward-compatilibity

	function resetDefaultState() {

		defaultState.geometry = null;
		defaultState.program = null;
		defaultState.wireframe = false;

	}

	return {

		setup: setup,
		reset: reset,
		resetDefaultState: resetDefaultState,
		dispose: dispose,
		releaseStatesOfGeometry: releaseStatesOfGeometry,
		releaseStatesOfProgram: releaseStatesOfProgram,

		initAttributes: initAttributes,
		enableAttribute: enableAttribute,
		disableUnusedAttributes: disableUnusedAttributes

	};

}

function WebGLBufferRenderer( gl, extensions, info, capabilities ) {

	const isWebGL2 = capabilities.isWebGL2;

	let mode;

	function setMode( value ) {

		mode = value;

	}

	function render( start, count ) {

		gl.drawArrays( mode, start, count );

		info.update( count, mode, 1 );

	}

	function renderInstances( start, count, primcount ) {

		if ( primcount === 0 ) return;

		let extension, methodName;

		if ( isWebGL2 ) {

			extension = gl;
			methodName = 'drawArraysInstanced';

		} else {

			extension = extensions.get( 'ANGLE_instanced_arrays' );
			methodName = 'drawArraysInstancedANGLE';

			if ( extension === null ) {

				console.error( 'THREE.WebGLBufferRenderer: using THREE.InstancedBufferGeometry but hardware does not support extension ANGLE_instanced_arrays.' );
				return;

			}

		}

		extension[ methodName ]( mode, start, count, primcount );

		info.update( count, mode, primcount );

	}

	//

	this.setMode = setMode;
	this.render = render;
	this.renderInstances = renderInstances;

}

function WebGLCapabilities( gl, extensions, parameters ) {

	let maxAnisotropy;

	function getMaxAnisotropy() {

		if ( maxAnisotropy !== undefined ) return maxAnisotropy;

		if ( extensions.has( 'EXT_texture_filter_anisotropic' ) === true ) {

			const extension = extensions.get( 'EXT_texture_filter_anisotropic' );

			maxAnisotropy = gl.getParameter( extension.MAX_TEXTURE_MAX_ANISOTROPY_EXT );

		} else {

			maxAnisotropy = 0;

		}

		return maxAnisotropy;

	}

	function getMaxPrecision( precision ) {

		if ( precision === 'highp' ) {

			if ( gl.getShaderPrecisionFormat( 35633, 36338 ).precision > 0 &&
				gl.getShaderPrecisionFormat( 35632, 36338 ).precision > 0 ) {

				return 'highp';

			}

			precision = 'mediump';

		}

		if ( precision === 'mediump' ) {

			if ( gl.getShaderPrecisionFormat( 35633, 36337 ).precision > 0 &&
				gl.getShaderPrecisionFormat( 35632, 36337 ).precision > 0 ) {

				return 'mediump';

			}

		}

		return 'lowp';

	}

	const isWebGL2 = ( typeof WebGL2RenderingContext !== 'undefined' && gl instanceof WebGL2RenderingContext ) ||
		( typeof WebGL2ComputeRenderingContext !== 'undefined' && gl instanceof WebGL2ComputeRenderingContext );

	let precision = parameters.precision !== undefined ? parameters.precision : 'highp';
	const maxPrecision = getMaxPrecision( precision );

	if ( maxPrecision !== precision ) {

		console.warn( 'THREE.WebGLRenderer:', precision, 'not supported, using', maxPrecision, 'instead.' );
		precision = maxPrecision;

	}

	const drawBuffers = isWebGL2 || extensions.has( 'WEBGL_draw_buffers' );

	const logarithmicDepthBuffer = parameters.logarithmicDepthBuffer === true;

	const maxTextures = gl.getParameter( 34930 );
	const maxVertexTextures = gl.getParameter( 35660 );
	const maxTextureSize = gl.getParameter( 3379 );
	const maxCubemapSize = gl.getParameter( 34076 );

	const maxAttributes = gl.getParameter( 34921 );
	const maxVertexUniforms = gl.getParameter( 36347 );
	const maxVaryings = gl.getParameter( 36348 );
	const maxFragmentUniforms = gl.getParameter( 36349 );

	const vertexTextures = maxVertexTextures > 0;
	const floatFragmentTextures = isWebGL2 || extensions.has( 'OES_texture_float' );
	const floatVertexTextures = vertexTextures && floatFragmentTextures;

	const maxSamples = isWebGL2 ? gl.getParameter( 36183 ) : 0;

	return {

		isWebGL2: isWebGL2,

		drawBuffers: drawBuffers,

		getMaxAnisotropy: getMaxAnisotropy,
		getMaxPrecision: getMaxPrecision,

		precision: precision,
		logarithmicDepthBuffer: logarithmicDepthBuffer,

		maxTextures: maxTextures,
		maxVertexTextures: maxVertexTextures,
		maxTextureSize: maxTextureSize,
		maxCubemapSize: maxCubemapSize,

		maxAttributes: maxAttributes,
		maxVertexUniforms: maxVertexUniforms,
		maxVaryings: maxVaryings,
		maxFragmentUniforms: maxFragmentUniforms,

		vertexTextures: vertexTextures,
		floatFragmentTextures: floatFragmentTextures,
		floatVertexTextures: floatVertexTextures,

		maxSamples: maxSamples

	};

}

function WebGLClipping( properties ) {

	const scope = this;

	let globalState = null,
		numGlobalPlanes = 0,
		localClippingEnabled = false,
		renderingShadows = false;

	const plane = new Plane(),
		viewNormalMatrix = new Matrix3(),

		uniform = { value: null, needsUpdate: false };

	this.uniform = uniform;
	this.numPlanes = 0;
	this.numIntersection = 0;

	this.init = function ( planes, enableLocalClipping, camera ) {

		const enabled =
			planes.length !== 0 ||
			enableLocalClipping ||
			// enable state of previous frame - the clipping code has to
			// run another frame in order to reset the state:
			numGlobalPlanes !== 0 ||
			localClippingEnabled;

		localClippingEnabled = enableLocalClipping;

		globalState = projectPlanes( planes, camera, 0 );
		numGlobalPlanes = planes.length;

		return enabled;

	};

	this.beginShadows = function () {

		renderingShadows = true;
		projectPlanes( null );

	};

	this.endShadows = function () {

		renderingShadows = false;
		resetGlobalState();

	};

	this.setState = function ( material, camera, useCache ) {

		const planes = material.clippingPlanes,
			clipIntersection = material.clipIntersection,
			clipShadows = material.clipShadows;

		const materialProperties = properties.get( material );

		if ( ! localClippingEnabled || planes === null || planes.length === 0 || renderingShadows && ! clipShadows ) {

			// there's no local clipping

			if ( renderingShadows ) {

				// there's no global clipping

				projectPlanes( null );

			} else {

				resetGlobalState();

			}

		} else {

			const nGlobal = renderingShadows ? 0 : numGlobalPlanes,
				lGlobal = nGlobal * 4;

			let dstArray = materialProperties.clippingState || null;

			uniform.value = dstArray; // ensure unique state

			dstArray = projectPlanes( planes, camera, lGlobal, useCache );

			for ( let i = 0; i !== lGlobal; ++ i ) {

				dstArray[ i ] = globalState[ i ];

			}

			materialProperties.clippingState = dstArray;
			this.numIntersection = clipIntersection ? this.numPlanes : 0;
			this.numPlanes += nGlobal;

		}


	};

	function resetGlobalState() {

		if ( uniform.value !== globalState ) {

			uniform.value = globalState;
			uniform.needsUpdate = numGlobalPlanes > 0;

		}

		scope.numPlanes = numGlobalPlanes;
		scope.numIntersection = 0;

	}

	function projectPlanes( planes, camera, dstOffset, skipTransform ) {

		const nPlanes = planes !== null ? planes.length : 0;
		let dstArray = null;

		if ( nPlanes !== 0 ) {

			dstArray = uniform.value;

			if ( skipTransform !== true || dstArray === null ) {

				const flatSize = dstOffset + nPlanes * 4,
					viewMatrix = camera.matrixWorldInverse;

				viewNormalMatrix.getNormalMatrix( viewMatrix );

				if ( dstArray === null || dstArray.length < flatSize ) {

					dstArray = new Float32Array( flatSize );

				}

				for ( let i = 0, i4 = dstOffset; i !== nPlanes; ++ i, i4 += 4 ) {

					plane.copy( planes[ i ] ).applyMatrix4( viewMatrix, viewNormalMatrix );

					plane.normal.toArray( dstArray, i4 );
					dstArray[ i4 + 3 ] = plane.constant;

				}

			}

			uniform.value = dstArray;
			uniform.needsUpdate = true;

		}

		scope.numPlanes = nPlanes;
		scope.numIntersection = 0;

		return dstArray;

	}

}

function WebGLCubeMaps( renderer ) {

	let cubemaps = new WeakMap();

	function mapTextureMapping( texture, mapping ) {

		if ( mapping === EquirectangularReflectionMapping ) {

			texture.mapping = CubeReflectionMapping;

		} else if ( mapping === EquirectangularRefractionMapping ) {

			texture.mapping = CubeRefractionMapping;

		}

		return texture;

	}

	function get( texture ) {

		if ( texture && texture.isTexture && texture.isRenderTargetTexture === false ) {

			const mapping = texture.mapping;

			if ( mapping === EquirectangularReflectionMapping || mapping === EquirectangularRefractionMapping ) {

				if ( cubemaps.has( texture ) ) {

					const cubemap = cubemaps.get( texture ).texture;
					return mapTextureMapping( cubemap, texture.mapping );

				} else {

					const image = texture.image;

					if ( image && image.height > 0 ) {

						const renderTarget = new WebGLCubeRenderTarget( image.height / 2 );
						renderTarget.fromEquirectangularTexture( renderer, texture );
						cubemaps.set( texture, renderTarget );

						texture.addEventListener( 'dispose', onTextureDispose );

						return mapTextureMapping( renderTarget.texture, texture.mapping );

					} else {

						// image not yet ready. try the conversion next frame

						return null;

					}

				}

			}

		}

		return texture;

	}

	function onTextureDispose( event ) {

		const texture = event.target;

		texture.removeEventListener( 'dispose', onTextureDispose );

		const cubemap = cubemaps.get( texture );

		if ( cubemap !== undefined ) {

			cubemaps.delete( texture );
			cubemap.dispose();

		}

	}

	function dispose() {

		cubemaps = new WeakMap();

	}

	return {
		get: get,
		dispose: dispose
	};

}

class OrthographicCamera extends Camera {

	constructor( left = - 1, right = 1, top = 1, bottom = - 1, near = 0.1, far = 2000 ) {

		super();

		this.type = 'OrthographicCamera';

		this.zoom = 1;
		this.view = null;

		this.left = left;
		this.right = right;
		this.top = top;
		this.bottom = bottom;

		this.near = near;
		this.far = far;

		this.updateProjectionMatrix();

	}

	copy( source, recursive ) {

		super.copy( source, recursive );

		this.left = source.left;
		this.right = source.right;
		this.top = source.top;
		this.bottom = source.bottom;
		this.near = source.near;
		this.far = source.far;

		this.zoom = source.zoom;
		this.view = source.view === null ? null : Object.assign( {}, source.view );

		return this;

	}

	setViewOffset( fullWidth, fullHeight, x, y, width, height ) {

		if ( this.view === null ) {

			this.view = {
				enabled: true,
				fullWidth: 1,
				fullHeight: 1,
				offsetX: 0,
				offsetY: 0,
				width: 1,
				height: 1
			};

		}

		this.view.enabled = true;
		this.view.fullWidth = fullWidth;
		this.view.fullHeight = fullHeight;
		this.view.offsetX = x;
		this.view.offsetY = y;
		this.view.width = width;
		this.view.height = height;

		this.updateProjectionMatrix();

	}

	clearViewOffset() {

		if ( this.view !== null ) {

			this.view.enabled = false;

		}

		this.updateProjectionMatrix();

	}

	updateProjectionMatrix() {

		const dx = ( this.right - this.left ) / ( 2 * this.zoom );
		const dy = ( this.top - this.bottom ) / ( 2 * this.zoom );
		const cx = ( this.right + this.left ) / 2;
		const cy = ( this.top + this.bottom ) / 2;

		let left = cx - dx;
		let right = cx + dx;
		let top = cy + dy;
		let bottom = cy - dy;

		if ( this.view !== null && this.view.enabled ) {

			const scaleW = ( this.right - this.left ) / this.view.fullWidth / this.zoom;
			const scaleH = ( this.top - this.bottom ) / this.view.fullHeight / this.zoom;

			left += scaleW * this.view.offsetX;
			right = left + scaleW * this.view.width;
			top -= scaleH * this.view.offsetY;
			bottom = top - scaleH * this.view.height;

		}

		this.projectionMatrix.makeOrthographic( left, right, top, bottom, this.near, this.far );

		this.projectionMatrixInverse.copy( this.projectionMatrix ).invert();

	}

	toJSON( meta ) {

		const data = super.toJSON( meta );

		data.object.zoom = this.zoom;
		data.object.left = this.left;
		data.object.right = this.right;
		data.object.top = this.top;
		data.object.bottom = this.bottom;
		data.object.near = this.near;
		data.object.far = this.far;

		if ( this.view !== null ) data.object.view = Object.assign( {}, this.view );

		return data;

	}

}

OrthographicCamera.prototype.isOrthographicCamera = true;

const LOD_MIN = 4;

// The standard deviations (radians) associated with the extra mips. These are
// chosen to approximate a Trowbridge-Reitz distribution function times the
// geometric shadowing function. These sigma values squared must match the
// variance #defines in cube_uv_reflection_fragment.glsl.js.
const EXTRA_LOD_SIGMA = [ 0.125, 0.215, 0.35, 0.446, 0.526, 0.582 ];

// The maximum length of the blur for loop. Smaller sigmas will use fewer
// samples and exit early, but not recompile the shader.
const MAX_SAMPLES = 20;

const _flatCamera = /*@__PURE__*/ new OrthographicCamera();
const _clearColor = /*@__PURE__*/ new Color();
let _oldTarget = null;

// Golden Ratio
const PHI = ( 1 + Math.sqrt( 5 ) ) / 2;
const INV_PHI = 1 / PHI;

// Vertices of a dodecahedron (except the opposites, which represent the
// same axis), used as axis directions evenly spread on a sphere.
const _axisDirections = [
	/*@__PURE__*/ new Vector3( 1, 1, 1 ),
	/*@__PURE__*/ new Vector3( - 1, 1, 1 ),
	/*@__PURE__*/ new Vector3( 1, 1, - 1 ),
	/*@__PURE__*/ new Vector3( - 1, 1, - 1 ),
	/*@__PURE__*/ new Vector3( 0, PHI, INV_PHI ),
	/*@__PURE__*/ new Vector3( 0, PHI, - INV_PHI ),
	/*@__PURE__*/ new Vector3( INV_PHI, 0, PHI ),
	/*@__PURE__*/ new Vector3( - INV_PHI, 0, PHI ),
	/*@__PURE__*/ new Vector3( PHI, INV_PHI, 0 ),
	/*@__PURE__*/ new Vector3( - PHI, INV_PHI, 0 ) ];

/**
 * This class generates a Prefiltered, Mipmapped Radiance Environment Map
 * (PMREM) from a cubeMap environment texture. This allows different levels of
 * blur to be quickly accessed based on material roughness. It is packed into a
 * special CubeUV format that allows us to perform custom interpolation so that
 * we can support nonlinear formats such as RGBE. Unlike a traditional mipmap
 * chain, it only goes down to the LOD_MIN level (above), and then creates extra
 * even more filtered 'mips' at the same LOD_MIN resolution, associated with
 * higher roughness levels. In this way we maintain resolution to smoothly
 * interpolate diffuse lighting while limiting sampling computation.
 *
 * Paper: Fast, Accurate Image-Based Lighting
 * https://drive.google.com/file/d/15y8r_UpKlU9SvV4ILb0C3qCPecS8pvLz/view
*/

class PMREMGenerator {

	constructor( renderer ) {

		this._renderer = renderer;
		this._pingPongRenderTarget = null;

		this._lodMax = 0;
		this._cubeSize = 0;
		this._lodPlanes = [];
		this._sizeLods = [];
		this._sigmas = [];

		this._blurMaterial = null;
		this._cubemapMaterial = null;
		this._equirectMaterial = null;

		this._compileMaterial( this._blurMaterial );

	}

	/**
	 * Generates a PMREM from a supplied Scene, which can be faster than using an
	 * image if networking bandwidth is low. Optional sigma specifies a blur radius
	 * in radians to be applied to the scene before PMREM generation. Optional near
	 * and far planes ensure the scene is rendered in its entirety (the cubeCamera
	 * is placed at the origin).
	 */
	fromScene( scene, sigma = 0, near = 0.1, far = 100 ) {

		_oldTarget = this._renderer.getRenderTarget();

		this._setSize( 256 );

		const cubeUVRenderTarget = this._allocateTargets();
		cubeUVRenderTarget.depthBuffer = true;

		this._sceneToCubeUV( scene, near, far, cubeUVRenderTarget );

		if ( sigma > 0 ) {

			this._blur( cubeUVRenderTarget, 0, 0, sigma );

		}

		this._applyPMREM( cubeUVRenderTarget );
		this._cleanup( cubeUVRenderTarget );

		return cubeUVRenderTarget;

	}

	/**
	 * Generates a PMREM from an equirectangular texture, which can be either LDR
	 * or HDR. The ideal input image size is 1k (1024 x 512),
	 * as this matches best with the 256 x 256 cubemap output.
	 */
	fromEquirectangular( equirectangular, renderTarget = null ) {

		return this._fromTexture( equirectangular, renderTarget );

	}

	/**
	 * Generates a PMREM from an cubemap texture, which can be either LDR
	 * or HDR. The ideal input cube size is 256 x 256,
	 * as this matches best with the 256 x 256 cubemap output.
	 */
	fromCubemap( cubemap, renderTarget = null ) {

		return this._fromTexture( cubemap, renderTarget );

	}

	/**
	 * Pre-compiles the cubemap shader. You can get faster start-up by invoking this method during
	 * your texture's network fetch for increased concurrency.
	 */
	compileCubemapShader() {

		if ( this._cubemapMaterial === null ) {

			this._cubemapMaterial = _getCubemapMaterial();
			this._compileMaterial( this._cubemapMaterial );

		}

	}

	/**
	 * Pre-compiles the equirectangular shader. You can get faster start-up by invoking this method during
	 * your texture's network fetch for increased concurrency.
	 */
	compileEquirectangularShader() {

		if ( this._equirectMaterial === null ) {

			this._equirectMaterial = _getEquirectMaterial();
			this._compileMaterial( this._equirectMaterial );

		}

	}

	/**
	 * Disposes of the PMREMGenerator's internal memory. Note that PMREMGenerator is a static class,
	 * so you should not need more than one PMREMGenerator object. If you do, calling dispose() on
	 * one of them will cause any others to also become unusable.
	 */
	dispose() {

		this._dispose();

		if ( this._cubemapMaterial !== null ) this._cubemapMaterial.dispose();
		if ( this._equirectMaterial !== null ) this._equirectMaterial.dispose();

	}

	// private interface

	_setSize( cubeSize ) {

		this._lodMax = Math.floor( Math.log2( cubeSize ) );
		this._cubeSize = Math.pow( 2, this._lodMax );

	}

	_dispose() {

		this._blurMaterial.dispose();

		if ( this._pingPongRenderTarget !== null ) this._pingPongRenderTarget.dispose();

		for ( let i = 0; i < this._lodPlanes.length; i ++ ) {

			this._lodPlanes[ i ].dispose();

		}

	}

	_cleanup( outputTarget ) {

		this._renderer.setRenderTarget( _oldTarget );
		outputTarget.scissorTest = false;
		_setViewport( outputTarget, 0, 0, outputTarget.width, outputTarget.height );

	}

	_fromTexture( texture, renderTarget ) {

		if ( texture.mapping === CubeReflectionMapping || texture.mapping === CubeRefractionMapping ) {

			this._setSize( texture.image.length === 0 ? 16 : ( texture.image[ 0 ].width || texture.image[ 0 ].image.width ) );

		} else { // Equirectangular

			this._setSize( texture.image.width / 4 );

		}

		_oldTarget = this._renderer.getRenderTarget();

		const cubeUVRenderTarget = renderTarget || this._allocateTargets();
		this._textureToCubeUV( texture, cubeUVRenderTarget );
		this._applyPMREM( cubeUVRenderTarget );
		this._cleanup( cubeUVRenderTarget );

		return cubeUVRenderTarget;

	}

	_allocateTargets() {

		const width = 3 * Math.max( this._cubeSize, 16 * 7 );
		const height = 4 * this._cubeSize - 32;

		const params = {
			magFilter: LinearFilter,
			minFilter: LinearFilter,
			generateMipmaps: false,
			type: HalfFloatType,
			format: RGBAFormat,
			encoding: LinearEncoding,
			depthBuffer: false
		};

		const cubeUVRenderTarget = _createRenderTarget( width, height, params );

		if ( this._pingPongRenderTarget === null || this._pingPongRenderTarget.width !== width ) {

			if ( this._pingPongRenderTarget !== null ) {

				this._dispose();

			}

			this._pingPongRenderTarget = _createRenderTarget( width, height, params );

			const { _lodMax } = this;
			( { sizeLods: this._sizeLods, lodPlanes: this._lodPlanes, sigmas: this._sigmas } = _createPlanes( _lodMax ) );

			this._blurMaterial = _getBlurShader( _lodMax, width, height );

		}

		return cubeUVRenderTarget;

	}

	_compileMaterial( material ) {

		const tmpMesh = new Mesh( this._lodPlanes[ 0 ], material );
		this._renderer.compile( tmpMesh, _flatCamera );

	}

	_sceneToCubeUV( scene, near, far, cubeUVRenderTarget ) {

		const fov = 90;
		const aspect = 1;
		const cubeCamera = new PerspectiveCamera( fov, aspect, near, far );
		const upSign = [ 1, - 1, 1, 1, 1, 1 ];
		const forwardSign = [ 1, 1, 1, - 1, - 1, - 1 ];
		const renderer = this._renderer;

		const originalAutoClear = renderer.autoClear;
		const toneMapping = renderer.toneMapping;
		renderer.getClearColor( _clearColor );

		renderer.toneMapping = NoToneMapping;
		renderer.autoClear = false;

		const backgroundMaterial = new MeshBasicMaterial( {
			name: 'PMREM.Background',
			side: BackSide,
			depthWrite: false,
			depthTest: false,
		} );

		const backgroundBox = new Mesh( new BoxGeometry(), backgroundMaterial );

		let useSolidColor = false;
		const background = scene.background;

		if ( background ) {

			if ( background.isColor ) {

				backgroundMaterial.color.copy( background );
				scene.background = null;
				useSolidColor = true;

			}

		} else {

			backgroundMaterial.color.copy( _clearColor );
			useSolidColor = true;

		}

		for ( let i = 0; i < 6; i ++ ) {

			const col = i % 3;

			if ( col === 0 ) {

				cubeCamera.up.set( 0, upSign[ i ], 0 );
				cubeCamera.lookAt( forwardSign[ i ], 0, 0 );

			} else if ( col === 1 ) {

				cubeCamera.up.set( 0, 0, upSign[ i ] );
				cubeCamera.lookAt( 0, forwardSign[ i ], 0 );

			} else {

				cubeCamera.up.set( 0, upSign[ i ], 0 );
				cubeCamera.lookAt( 0, 0, forwardSign[ i ] );

			}

			const size = this._cubeSize;

			_setViewport( cubeUVRenderTarget, col * size, i > 2 ? size : 0, size, size );

			renderer.setRenderTarget( cubeUVRenderTarget );

			if ( useSolidColor ) {

				renderer.render( backgroundBox, cubeCamera );

			}

			renderer.render( scene, cubeCamera );

		}

		backgroundBox.geometry.dispose();
		backgroundBox.material.dispose();

		renderer.toneMapping = toneMapping;
		renderer.autoClear = originalAutoClear;
		scene.background = background;

	}

	_textureToCubeUV( texture, cubeUVRenderTarget ) {

		const renderer = this._renderer;

		const isCubeTexture = ( texture.mapping === CubeReflectionMapping || texture.mapping === CubeRefractionMapping );

		if ( isCubeTexture ) {

			if ( this._cubemapMaterial === null ) {

				this._cubemapMaterial = _getCubemapMaterial();

			}

			this._cubemapMaterial.uniforms.flipEnvMap.value = ( texture.isRenderTargetTexture === false ) ? - 1 : 1;

		} else {

			if ( this._equirectMaterial === null ) {

				this._equirectMaterial = _getEquirectMaterial();

			}

		}

		const material = isCubeTexture ? this._cubemapMaterial : this._equirectMaterial;
		const mesh = new Mesh( this._lodPlanes[ 0 ], material );

		const uniforms = material.uniforms;

		uniforms[ 'envMap' ].value = texture;

		const size = this._cubeSize;

		_setViewport( cubeUVRenderTarget, 0, 0, 3 * size, 2 * size );

		renderer.setRenderTarget( cubeUVRenderTarget );
		renderer.render( mesh, _flatCamera );

	}

	_applyPMREM( cubeUVRenderTarget ) {

		const renderer = this._renderer;
		const autoClear = renderer.autoClear;
		renderer.autoClear = false;

		for ( let i = 1; i < this._lodPlanes.length; i ++ ) {

			const sigma = Math.sqrt( this._sigmas[ i ] * this._sigmas[ i ] - this._sigmas[ i - 1 ] * this._sigmas[ i - 1 ] );

			const poleAxis = _axisDirections[ ( i - 1 ) % _axisDirections.length ];

			this._blur( cubeUVRenderTarget, i - 1, i, sigma, poleAxis );

		}

		renderer.autoClear = autoClear;

	}

	/**
	 * This is a two-pass Gaussian blur for a cubemap. Normally this is done
	 * vertically and horizontally, but this breaks down on a cube. Here we apply
	 * the blur latitudinally (around the poles), and then longitudinally (towards
	 * the poles) to approximate the orthogonally-separable blur. It is least
	 * accurate at the poles, but still does a decent job.
	 */
	_blur( cubeUVRenderTarget, lodIn, lodOut, sigma, poleAxis ) {

		const pingPongRenderTarget = this._pingPongRenderTarget;

		this._halfBlur(
			cubeUVRenderTarget,
			pingPongRenderTarget,
			lodIn,
			lodOut,
			sigma,
			'latitudinal',
			poleAxis );

		this._halfBlur(
			pingPongRenderTarget,
			cubeUVRenderTarget,
			lodOut,
			lodOut,
			sigma,
			'longitudinal',
			poleAxis );

	}

	_halfBlur( targetIn, targetOut, lodIn, lodOut, sigmaRadians, direction, poleAxis ) {

		const renderer = this._renderer;
		const blurMaterial = this._blurMaterial;

		if ( direction !== 'latitudinal' && direction !== 'longitudinal' ) {

			console.error(
				'blur direction must be either latitudinal or longitudinal!' );

		}

		// Number of standard deviations at which to cut off the discrete approximation.
		const STANDARD_DEVIATIONS = 3;

		const blurMesh = new Mesh( this._lodPlanes[ lodOut ], blurMaterial );
		const blurUniforms = blurMaterial.uniforms;

		const pixels = this._sizeLods[ lodIn ] - 1;
		const radiansPerPixel = isFinite( sigmaRadians ) ? Math.PI / ( 2 * pixels ) : 2 * Math.PI / ( 2 * MAX_SAMPLES - 1 );
		const sigmaPixels = sigmaRadians / radiansPerPixel;
		const samples = isFinite( sigmaRadians ) ? 1 + Math.floor( STANDARD_DEVIATIONS * sigmaPixels ) : MAX_SAMPLES;

		if ( samples > MAX_SAMPLES ) {

			console.warn( `sigmaRadians, ${
				sigmaRadians}, is too large and will clip, as it requested ${
				samples} samples when the maximum is set to ${MAX_SAMPLES}` );

		}

		const weights = [];
		let sum = 0;

		for ( let i = 0; i < MAX_SAMPLES; ++ i ) {

			const x = i / sigmaPixels;
			const weight = Math.exp( - x * x / 2 );
			weights.push( weight );

			if ( i === 0 ) {

				sum += weight;

			} else if ( i < samples ) {

				sum += 2 * weight;

			}

		}

		for ( let i = 0; i < weights.length; i ++ ) {

			weights[ i ] = weights[ i ] / sum;

		}

		blurUniforms[ 'envMap' ].value = targetIn.texture;
		blurUniforms[ 'samples' ].value = samples;
		blurUniforms[ 'weights' ].value = weights;
		blurUniforms[ 'latitudinal' ].value = direction === 'latitudinal';

		if ( poleAxis ) {

			blurUniforms[ 'poleAxis' ].value = poleAxis;

		}

		const { _lodMax } = this;
		blurUniforms[ 'dTheta' ].value = radiansPerPixel;
		blurUniforms[ 'mipInt' ].value = _lodMax - lodIn;

		const outputSize = this._sizeLods[ lodOut ];
		const x = 3 * outputSize * ( lodOut > _lodMax - LOD_MIN ? lodOut - _lodMax + LOD_MIN : 0 );
		const y = 4 * ( this._cubeSize - outputSize );

		_setViewport( targetOut, x, y, 3 * outputSize, 2 * outputSize );
		renderer.setRenderTarget( targetOut );
		renderer.render( blurMesh, _flatCamera );

	}

}



function _createPlanes( lodMax ) {

	const lodPlanes = [];
	const sizeLods = [];
	const sigmas = [];

	let lod = lodMax;

	const totalLods = lodMax - LOD_MIN + 1 + EXTRA_LOD_SIGMA.length;

	for ( let i = 0; i < totalLods; i ++ ) {

		const sizeLod = Math.pow( 2, lod );
		sizeLods.push( sizeLod );
		let sigma = 1.0 / sizeLod;

		if ( i > lodMax - LOD_MIN ) {

			sigma = EXTRA_LOD_SIGMA[ i - lodMax + LOD_MIN - 1 ];

		} else if ( i === 0 ) {

			sigma = 0;

		}

		sigmas.push( sigma );

		const texelSize = 1.0 / ( sizeLod - 1 );
		const min = - texelSize / 2;
		const max = 1 + texelSize / 2;
		const uv1 = [ min, min, max, min, max, max, min, min, max, max, min, max ];

		const cubeFaces = 6;
		const vertices = 6;
		const positionSize = 3;
		const uvSize = 2;
		const faceIndexSize = 1;

		const position = new Float32Array( positionSize * vertices * cubeFaces );
		const uv = new Float32Array( uvSize * vertices * cubeFaces );
		const faceIndex = new Float32Array( faceIndexSize * vertices * cubeFaces );

		for ( let face = 0; face < cubeFaces; face ++ ) {

			const x = ( face % 3 ) * 2 / 3 - 1;
			const y = face > 2 ? 0 : - 1;
			const coordinates = [
				x, y, 0,
				x + 2 / 3, y, 0,
				x + 2 / 3, y + 1, 0,
				x, y, 0,
				x + 2 / 3, y + 1, 0,
				x, y + 1, 0
			];
			position.set( coordinates, positionSize * vertices * face );
			uv.set( uv1, uvSize * vertices * face );
			const fill = [ face, face, face, face, face, face ];
			faceIndex.set( fill, faceIndexSize * vertices * face );

		}

		const planes = new BufferGeometry();
		planes.setAttribute( 'position', new BufferAttribute( position, positionSize ) );
		planes.setAttribute( 'uv', new BufferAttribute( uv, uvSize ) );
		planes.setAttribute( 'faceIndex', new BufferAttribute( faceIndex, faceIndexSize ) );
		lodPlanes.push( planes );

		if ( lod > LOD_MIN ) {

			lod --;

		}

	}

	return { lodPlanes, sizeLods, sigmas };

}

function _createRenderTarget( width, height, params ) {

	const cubeUVRenderTarget = new WebGLRenderTarget( width, height, params );
	cubeUVRenderTarget.texture.mapping = CubeUVReflectionMapping;
	cubeUVRenderTarget.texture.name = 'PMREM.cubeUv';
	cubeUVRenderTarget.scissorTest = true;
	return cubeUVRenderTarget;

}

function _setViewport( target, x, y, width, height ) {

	target.viewport.set( x, y, width, height );
	target.scissor.set( x, y, width, height );

}

function _getBlurShader( lodMax, width, height ) {

	const weights = new Float32Array( MAX_SAMPLES );
	const poleAxis = new Vector3( 0, 1, 0 );
	const shaderMaterial = new ShaderMaterial( {

		name: 'SphericalGaussianBlur',

		defines: {
			'n': MAX_SAMPLES,
			'CUBEUV_TEXEL_WIDTH': 1.0 / width,
			'CUBEUV_TEXEL_HEIGHT': 1.0 / height,
			'CUBEUV_MAX_MIP': `${lodMax}.0`,
		},

		uniforms: {
			'envMap': { value: null },
			'samples': { value: 1 },
			'weights': { value: weights },
			'latitudinal': { value: false },
			'dTheta': { value: 0 },
			'mipInt': { value: 0 },
			'poleAxis': { value: poleAxis }
		},

		vertexShader: _getCommonVertexShader(),

		fragmentShader: /* glsl */`

			precision mediump float;
			precision mediump int;

			varying vec3 vOutputDirection;

			uniform sampler2D envMap;
			uniform int samples;
			uniform float weights[ n ];
			uniform bool latitudinal;
			uniform float dTheta;
			uniform float mipInt;
			uniform vec3 poleAxis;

			#define ENVMAP_TYPE_CUBE_UV
			#include <cube_uv_reflection_fragment>

			vec3 getSample( float theta, vec3 axis ) {

				float cosTheta = cos( theta );
				// Rodrigues' axis-angle rotation
				vec3 sampleDirection = vOutputDirection * cosTheta
					+ cross( axis, vOutputDirection ) * sin( theta )
					+ axis * dot( axis, vOutputDirection ) * ( 1.0 - cosTheta );

				return bilinearCubeUV( envMap, sampleDirection, mipInt );

			}

			void main() {

				vec3 axis = latitudinal ? poleAxis : cross( poleAxis, vOutputDirection );

				if ( all( equal( axis, vec3( 0.0 ) ) ) ) {

					axis = vec3( vOutputDirection.z, 0.0, - vOutputDirection.x );

				}

				axis = normalize( axis );

				gl_FragColor = vec4( 0.0, 0.0, 0.0, 1.0 );
				gl_FragColor.rgb += weights[ 0 ] * getSample( 0.0, axis );

				for ( int i = 1; i < n; i++ ) {

					if ( i >= samples ) {

						break;

					}

					float theta = dTheta * float( i );
					gl_FragColor.rgb += weights[ i ] * getSample( -1.0 * theta, axis );
					gl_FragColor.rgb += weights[ i ] * getSample( theta, axis );

				}

			}
		`,

		blending: NoBlending,
		depthTest: false,
		depthWrite: false

	} );

	return shaderMaterial;

}

function _getEquirectMaterial() {

	return new ShaderMaterial( {

		name: 'EquirectangularToCubeUV',

		uniforms: {
			'envMap': { value: null }
		},

		vertexShader: _getCommonVertexShader(),

		fragmentShader: /* glsl */`

			precision mediump float;
			precision mediump int;

			varying vec3 vOutputDirection;

			uniform sampler2D envMap;

			#include <common>

			void main() {

				vec3 outputDirection = normalize( vOutputDirection );
				vec2 uv = equirectUv( outputDirection );

				gl_FragColor = vec4( texture2D ( envMap, uv ).rgb, 1.0 );

			}
		`,

		blending: NoBlending,
		depthTest: false,
		depthWrite: false

	} );

}

function _getCubemapMaterial() {

	return new ShaderMaterial( {

		name: 'CubemapToCubeUV',

		uniforms: {
			'envMap': { value: null },
			'flipEnvMap': { value: - 1 }
		},

		vertexShader: _getCommonVertexShader(),

		fragmentShader: /* glsl */`

			precision mediump float;
			precision mediump int;

			uniform float flipEnvMap;

			varying vec3 vOutputDirection;

			uniform samplerCube envMap;

			void main() {

				gl_FragColor = textureCube( envMap, vec3( flipEnvMap * vOutputDirection.x, vOutputDirection.yz ) );

			}
		`,

		blending: NoBlending,
		depthTest: false,
		depthWrite: false

	} );

}

function _getCommonVertexShader() {

	return /* glsl */`

		precision mediump float;
		precision mediump int;

		attribute float faceIndex;

		varying vec3 vOutputDirection;

		// RH coordinate system; PMREM face-indexing convention
		vec3 getDirection( vec2 uv, float face ) {

			uv = 2.0 * uv - 1.0;

			vec3 direction = vec3( uv, 1.0 );

			if ( face == 0.0 ) {

				direction = direction.zyx; // ( 1, v, u ) pos x

			} else if ( face == 1.0 ) {

				direction = direction.xzy;
				direction.xz *= -1.0; // ( -u, 1, -v ) pos y

			} else if ( face == 2.0 ) {

				direction.x *= -1.0; // ( -u, v, 1 ) pos z

			} else if ( face == 3.0 ) {

				direction = direction.zyx;
				direction.xz *= -1.0; // ( -1, v, -u ) neg x

			} else if ( face == 4.0 ) {

				direction = direction.xzy;
				direction.xy *= -1.0; // ( -u, -1, v ) neg y

			} else if ( face == 5.0 ) {

				direction.z *= -1.0; // ( u, v, -1 ) neg z

			}

			return direction;

		}

		void main() {

			vOutputDirection = getDirection( uv, faceIndex );
			gl_Position = vec4( position, 1.0 );

		}
	`;

}

function WebGLCubeUVMaps( renderer ) {

	let cubeUVmaps = new WeakMap();

	let pmremGenerator = null;

	function get( texture ) {

		if ( texture && texture.isTexture ) {

			const mapping = texture.mapping;

			const isEquirectMap = ( mapping === EquirectangularReflectionMapping || mapping === EquirectangularRefractionMapping );
			const isCubeMap = ( mapping === CubeReflectionMapping || mapping === CubeRefractionMapping );

			// equirect/cube map to cubeUV conversion

			if ( isEquirectMap || isCubeMap ) {

				if ( texture.isRenderTargetTexture && texture.needsPMREMUpdate === true ) {

					texture.needsPMREMUpdate = false;

					let renderTarget = cubeUVmaps.get( texture );

					if ( pmremGenerator === null ) pmremGenerator = new PMREMGenerator( renderer );

					renderTarget = isEquirectMap ? pmremGenerator.fromEquirectangular( texture, renderTarget ) : pmremGenerator.fromCubemap( texture, renderTarget );
					cubeUVmaps.set( texture, renderTarget );

					return renderTarget.texture;

				} else {

					if ( cubeUVmaps.has( texture ) ) {

						return cubeUVmaps.get( texture ).texture;

					} else {

						const image = texture.image;

						if ( ( isEquirectMap && image && image.height > 0 ) || ( isCubeMap && image && isCubeTextureComplete( image ) ) ) {

							if ( pmremGenerator === null ) pmremGenerator = new PMREMGenerator( renderer );

							const renderTarget = isEquirectMap ? pmremGenerator.fromEquirectangular( texture ) : pmremGenerator.fromCubemap( texture );
							cubeUVmaps.set( texture, renderTarget );

							texture.addEventListener( 'dispose', onTextureDispose );

							return renderTarget.texture;

						} else {

							// image not yet ready. try the conversion next frame

							return null;

						}

					}

				}

			}

		}

		return texture;

	}

	function isCubeTextureComplete( image ) {

		let count = 0;
		const length = 6;

		for ( let i = 0; i < length; i ++ ) {

			if ( image[ i ] !== undefined ) count ++;

		}

		return count === length;


	}

	function onTextureDispose( event ) {

		const texture = event.target;

		texture.removeEventListener( 'dispose', onTextureDispose );

		const cubemapUV = cubeUVmaps.get( texture );

		if ( cubemapUV !== undefined ) {

			cubeUVmaps.delete( texture );
			cubemapUV.dispose();

		}

	}

	function dispose() {

		cubeUVmaps = new WeakMap();

		if ( pmremGenerator !== null ) {

			pmremGenerator.dispose();
			pmremGenerator = null;

		}

	}

	return {
		get: get,
		dispose: dispose
	};

}

function WebGLExtensions( gl ) {

	const extensions = {};

	function getExtension( name ) {

		if ( extensions[ name ] !== undefined ) {

			return extensions[ name ];

		}

		let extension;

		switch ( name ) {

			case 'WEBGL_depth_texture':
				extension = gl.getExtension( 'WEBGL_depth_texture' ) || gl.getExtension( 'MOZ_WEBGL_depth_texture' ) || gl.getExtension( 'WEBKIT_WEBGL_depth_texture' );
				break;

			case 'EXT_texture_filter_anisotropic':
				extension = gl.getExtension( 'EXT_texture_filter_anisotropic' ) || gl.getExtension( 'MOZ_EXT_texture_filter_anisotropic' ) || gl.getExtension( 'WEBKIT_EXT_texture_filter_anisotropic' );
				break;

			case 'WEBGL_compressed_texture_s3tc':
				extension = gl.getExtension( 'WEBGL_compressed_texture_s3tc' ) || gl.getExtension( 'MOZ_WEBGL_compressed_texture_s3tc' ) || gl.getExtension( 'WEBKIT_WEBGL_compressed_texture_s3tc' );
				break;

			case 'WEBGL_compressed_texture_pvrtc':
				extension = gl.getExtension( 'WEBGL_compressed_texture_pvrtc' ) || gl.getExtension( 'WEBKIT_WEBGL_compressed_texture_pvrtc' );
				break;

			default:
				extension = gl.getExtension( name );

		}

		extensions[ name ] = extension;

		return extension;

	}

	return {

		has: function ( name ) {

			return getExtension( name ) !== null;

		},

		init: function ( capabilities ) {

			if ( capabilities.isWebGL2 ) {

				getExtension( 'EXT_color_buffer_float' );

			} else {

				getExtension( 'WEBGL_depth_texture' );
				getExtension( 'OES_texture_float' );
				getExtension( 'OES_texture_half_float' );
				getExtension( 'OES_texture_half_float_linear' );
				getExtension( 'OES_standard_derivatives' );
				getExtension( 'OES_element_index_uint' );
				getExtension( 'OES_vertex_array_object' );
				getExtension( 'ANGLE_instanced_arrays' );

			}

			getExtension( 'OES_texture_float_linear' );
			getExtension( 'EXT_color_buffer_half_float' );
			getExtension( 'WEBGL_multisampled_render_to_texture' );

		},

		get: function ( name ) {

			const extension = getExtension( name );

			if ( extension === null ) {

				console.warn( 'THREE.WebGLRenderer: ' + name + ' extension not supported.' );

			}

			return extension;

		}

	};

}

function WebGLGeometries( gl, attributes, info, bindingStates ) {

	const geometries = {};
	const wireframeAttributes = new WeakMap();

	function onGeometryDispose( event ) {

		const geometry = event.target;

		if ( geometry.index !== null ) {

			attributes.remove( geometry.index );

		}

		for ( const name in geometry.attributes ) {

			attributes.remove( geometry.attributes[ name ] );

		}

		geometry.removeEventListener( 'dispose', onGeometryDispose );

		delete geometries[ geometry.id ];

		const attribute = wireframeAttributes.get( geometry );

		if ( attribute ) {

			attributes.remove( attribute );
			wireframeAttributes.delete( geometry );

		}

		bindingStates.releaseStatesOfGeometry( geometry );

		if ( geometry.isInstancedBufferGeometry === true ) {

			delete geometry._maxInstanceCount;

		}

		//

		info.memory.geometries --;

	}

	function get( object, geometry ) {

		if ( geometries[ geometry.id ] === true ) return geometry;

		geometry.addEventListener( 'dispose', onGeometryDispose );

		geometries[ geometry.id ] = true;

		info.memory.geometries ++;

		return geometry;

	}

	function update( geometry ) {

		const geometryAttributes = geometry.attributes;

		// Updating index buffer in VAO now. See WebGLBindingStates.

		for ( const name in geometryAttributes ) {

			attributes.update( geometryAttributes[ name ], 34962 );

		}

		// morph targets

		const morphAttributes = geometry.morphAttributes;

		for ( const name in morphAttributes ) {

			const array = morphAttributes[ name ];

			for ( let i = 0, l = array.length; i < l; i ++ ) {

				attributes.update( array[ i ], 34962 );

			}

		}

	}

	function updateWireframeAttribute( geometry ) {

		const indices = [];

		const geometryIndex = geometry.index;
		const geometryPosition = geometry.attributes.position;
		let version = 0;

		if ( geometryIndex !== null ) {

			const array = geometryIndex.array;
			version = geometryIndex.version;

			for ( let i = 0, l = array.length; i < l; i += 3 ) {

				const a = array[ i + 0 ];
				const b = array[ i + 1 ];
				const c = array[ i + 2 ];

				indices.push( a, b, b, c, c, a );

			}

		} else {

			const array = geometryPosition.array;
			version = geometryPosition.version;

			for ( let i = 0, l = ( array.length / 3 ) - 1; i < l; i += 3 ) {

				const a = i + 0;
				const b = i + 1;
				const c = i + 2;

				indices.push( a, b, b, c, c, a );

			}

		}

		const attribute = new ( arrayNeedsUint32( indices ) ? Uint32BufferAttribute : Uint16BufferAttribute )( indices, 1 );
		attribute.version = version;

		// Updating index buffer in VAO now. See WebGLBindingStates

		//

		const previousAttribute = wireframeAttributes.get( geometry );

		if ( previousAttribute ) attributes.remove( previousAttribute );

		//

		wireframeAttributes.set( geometry, attribute );

	}

	function getWireframeAttribute( geometry ) {

		const currentAttribute = wireframeAttributes.get( geometry );

		if ( currentAttribute ) {

			const geometryIndex = geometry.index;

			if ( geometryIndex !== null ) {

				// if the attribute is obsolete, create a new one

				if ( currentAttribute.version < geometryIndex.version ) {

					updateWireframeAttribute( geometry );

				}

			}

		} else {

			updateWireframeAttribute( geometry );

		}

		return wireframeAttributes.get( geometry );

	}

	return {

		get: get,
		update: update,

		getWireframeAttribute: getWireframeAttribute

	};

}

function WebGLIndexedBufferRenderer( gl, extensions, info, capabilities ) {

	const isWebGL2 = capabilities.isWebGL2;

	let mode;

	function setMode( value ) {

		mode = value;

	}

	let type, bytesPerElement;

	function setIndex( value ) {

		type = value.type;
		bytesPerElement = value.bytesPerElement;

	}

	function render( start, count ) {

		gl.drawElements( mode, count, type, start * bytesPerElement );

		info.update( count, mode, 1 );

	}

	function renderInstances( start, count, primcount ) {

		if ( primcount === 0 ) return;

		let extension, methodName;

		if ( isWebGL2 ) {

			extension = gl;
			methodName = 'drawElementsInstanced';

		} else {

			extension = extensions.get( 'ANGLE_instanced_arrays' );
			methodName = 'drawElementsInstancedANGLE';

			if ( extension === null ) {

				console.error( 'THREE.WebGLIndexedBufferRenderer: using THREE.InstancedBufferGeometry but hardware does not support extension ANGLE_instanced_arrays.' );
				return;

			}

		}

		extension[ methodName ]( mode, count, type, start * bytesPerElement, primcount );

		info.update( count, mode, primcount );

	}

	//

	this.setMode = setMode;
	this.setIndex = setIndex;
	this.render = render;
	this.renderInstances = renderInstances;

}

function WebGLInfo( gl ) {

	const memory = {
		geometries: 0,
		textures: 0
	};

	const render = {
		frame: 0,
		calls: 0,
		triangles: 0,
		points: 0,
		lines: 0
	};

	function update( count, mode, instanceCount ) {

		render.calls ++;

		switch ( mode ) {

			case 4:
				render.triangles += instanceCount * ( count / 3 );
				break;

			case 1:
				render.lines += instanceCount * ( count / 2 );
				break;

			case 3:
				render.lines += instanceCount * ( count - 1 );
				break;

			case 2:
				render.lines += instanceCount * count;
				break;

			case 0:
				render.points += instanceCount * count;
				break;

			default:
				console.error( 'THREE.WebGLInfo: Unknown draw mode:', mode );
				break;

		}

	}

	function reset() {

		render.frame ++;
		render.calls = 0;
		render.triangles = 0;
		render.points = 0;
		render.lines = 0;

	}

	return {
		memory: memory,
		render: render,
		programs: null,
		autoReset: true,
		reset: reset,
		update: update
	};

}

function numericalSort( a, b ) {

	return a[ 0 ] - b[ 0 ];

}

function absNumericalSort( a, b ) {

	return Math.abs( b[ 1 ] ) - Math.abs( a[ 1 ] );

}

function denormalize( morph, attribute ) {

	let denominator = 1;
	const array = attribute.isInterleavedBufferAttribute ? attribute.data.array : attribute.array;

	if ( array instanceof Int8Array ) denominator = 127;
	else if ( array instanceof Int16Array ) denominator = 32767;
	else if ( array instanceof Int32Array ) denominator = 2147483647;
	else console.error( 'THREE.WebGLMorphtargets: Unsupported morph attribute data type: ', array );

	morph.divideScalar( denominator );

}

function WebGLMorphtargets( gl, capabilities, textures ) {

	const influencesList = {};
	const morphInfluences = new Float32Array( 8 );
	const morphTextures = new WeakMap();
	const morph = new Vector4$1();

	const workInfluences = [];

	for ( let i = 0; i < 8; i ++ ) {

		workInfluences[ i ] = [ i, 0 ];

	}

	function update( object, geometry, material, program ) {

		const objectInfluences = object.morphTargetInfluences;

		if ( capabilities.isWebGL2 === true ) {

			// instead of using attributes, the WebGL 2 code path encodes morph targets
			// into an array of data textures. Each layer represents a single morph target.

			const morphAttribute = geometry.morphAttributes.position || geometry.morphAttributes.normal || geometry.morphAttributes.color;
			const morphTargetsCount = ( morphAttribute !== undefined ) ? morphAttribute.length : 0;

			let entry = morphTextures.get( geometry );

			if ( entry === undefined || entry.count !== morphTargetsCount ) {

				if ( entry !== undefined ) entry.texture.dispose();

				const hasMorphPosition = geometry.morphAttributes.position !== undefined;
				const hasMorphNormals = geometry.morphAttributes.normal !== undefined;
				const hasMorphColors = geometry.morphAttributes.color !== undefined;

				const morphTargets = geometry.morphAttributes.position || [];
				const morphNormals = geometry.morphAttributes.normal || [];
				const morphColors = geometry.morphAttributes.color || [];

				let vertexDataCount = 0;

				if ( hasMorphPosition === true ) vertexDataCount = 1;
				if ( hasMorphNormals === true ) vertexDataCount = 2;
				if ( hasMorphColors === true ) vertexDataCount = 3;

				let width = geometry.attributes.position.count * vertexDataCount;
				let height = 1;

				if ( width > capabilities.maxTextureSize ) {

					height = Math.ceil( width / capabilities.maxTextureSize );
					width = capabilities.maxTextureSize;

				}

				const buffer = new Float32Array( width * height * 4 * morphTargetsCount );

				const texture = new DataArrayTexture( buffer, width, height, morphTargetsCount );
				texture.format = RGBAFormat; // using RGBA since RGB might be emulated (and is thus slower)
				texture.type = FloatType;
				texture.needsUpdate = true;

				// fill buffer

				const vertexDataStride = vertexDataCount * 4;

				for ( let i = 0; i < morphTargetsCount; i ++ ) {

					const morphTarget = morphTargets[ i ];
					const morphNormal = morphNormals[ i ];
					const morphColor = morphColors[ i ];

					const offset = width * height * 4 * i;

					for ( let j = 0; j < morphTarget.count; j ++ ) {

						const stride = j * vertexDataStride;

						if ( hasMorphPosition === true ) {

							morph.fromBufferAttribute( morphTarget, j );

							if ( morphTarget.normalized === true ) denormalize( morph, morphTarget );

							buffer[ offset + stride + 0 ] = morph.x;
							buffer[ offset + stride + 1 ] = morph.y;
							buffer[ offset + stride + 2 ] = morph.z;
							buffer[ offset + stride + 3 ] = 0;

						}

						if ( hasMorphNormals === true ) {

							morph.fromBufferAttribute( morphNormal, j );

							if ( morphNormal.normalized === true ) denormalize( morph, morphNormal );

							buffer[ offset + stride + 4 ] = morph.x;
							buffer[ offset + stride + 5 ] = morph.y;
							buffer[ offset + stride + 6 ] = morph.z;
							buffer[ offset + stride + 7 ] = 0;

						}

						if ( hasMorphColors === true ) {

							morph.fromBufferAttribute( morphColor, j );

							if ( morphColor.normalized === true ) denormalize( morph, morphNormal );

							buffer[ offset + stride + 8 ] = morph.x;
							buffer[ offset + stride + 9 ] = morph.y;
							buffer[ offset + stride + 10 ] = morph.z;
							buffer[ offset + stride + 11 ] = ( morphColor.itemSize === 4 ) ? morph.w : 1;

						}

					}

				}

				entry = {
					count: morphTargetsCount,
					texture: texture,
					size: new Vector2( width, height )
				};

				morphTextures.set( geometry, entry );

				function disposeTexture() {

					texture.dispose();

					morphTextures.delete( geometry );

					geometry.removeEventListener( 'dispose', disposeTexture );

				}

				geometry.addEventListener( 'dispose', disposeTexture );

			}

			//

			let morphInfluencesSum = 0;

			for ( let i = 0; i < objectInfluences.length; i ++ ) {

				morphInfluencesSum += objectInfluences[ i ];

			}

			const morphBaseInfluence = geometry.morphTargetsRelative ? 1 : 1 - morphInfluencesSum;

			program.getUniforms().setValue( gl, 'morphTargetBaseInfluence', morphBaseInfluence );
			program.getUniforms().setValue( gl, 'morphTargetInfluences', objectInfluences );

			program.getUniforms().setValue( gl, 'morphTargetsTexture', entry.texture, textures );
			program.getUniforms().setValue( gl, 'morphTargetsTextureSize', entry.size );


		} else {

			// When object doesn't have morph target influences defined, we treat it as a 0-length array
			// This is important to make sure we set up morphTargetBaseInfluence / morphTargetInfluences

			const length = objectInfluences === undefined ? 0 : objectInfluences.length;

			let influences = influencesList[ geometry.id ];

			if ( influences === undefined || influences.length !== length ) {

				// initialise list

				influences = [];

				for ( let i = 0; i < length; i ++ ) {

					influences[ i ] = [ i, 0 ];

				}

				influencesList[ geometry.id ] = influences;

			}

			// Collect influences

			for ( let i = 0; i < length; i ++ ) {

				const influence = influences[ i ];

				influence[ 0 ] = i;
				influence[ 1 ] = objectInfluences[ i ];

			}

			influences.sort( absNumericalSort );

			for ( let i = 0; i < 8; i ++ ) {

				if ( i < length && influences[ i ][ 1 ] ) {

					workInfluences[ i ][ 0 ] = influences[ i ][ 0 ];
					workInfluences[ i ][ 1 ] = influences[ i ][ 1 ];

				} else {

					workInfluences[ i ][ 0 ] = Number.MAX_SAFE_INTEGER;
					workInfluences[ i ][ 1 ] = 0;

				}

			}

			workInfluences.sort( numericalSort );

			const morphTargets = geometry.morphAttributes.position;
			const morphNormals = geometry.morphAttributes.normal;

			let morphInfluencesSum = 0;

			for ( let i = 0; i < 8; i ++ ) {

				const influence = workInfluences[ i ];
				const index = influence[ 0 ];
				const value = influence[ 1 ];

				if ( index !== Number.MAX_SAFE_INTEGER && value ) {

					if ( morphTargets && geometry.getAttribute( 'morphTarget' + i ) !== morphTargets[ index ] ) {

						geometry.setAttribute( 'morphTarget' + i, morphTargets[ index ] );

					}

					if ( morphNormals && geometry.getAttribute( 'morphNormal' + i ) !== morphNormals[ index ] ) {

						geometry.setAttribute( 'morphNormal' + i, morphNormals[ index ] );

					}

					morphInfluences[ i ] = value;
					morphInfluencesSum += value;

				} else {

					if ( morphTargets && geometry.hasAttribute( 'morphTarget' + i ) === true ) {

						geometry.deleteAttribute( 'morphTarget' + i );

					}

					if ( morphNormals && geometry.hasAttribute( 'morphNormal' + i ) === true ) {

						geometry.deleteAttribute( 'morphNormal' + i );

					}

					morphInfluences[ i ] = 0;

				}

			}

			// GLSL shader uses formula baseinfluence * base + sum(target * influence)
			// This allows us to switch between absolute morphs and relative morphs without changing shader code
			// When baseinfluence = 1 - sum(influence), the above is equivalent to sum((target - base) * influence)
			const morphBaseInfluence = geometry.morphTargetsRelative ? 1 : 1 - morphInfluencesSum;

			program.getUniforms().setValue( gl, 'morphTargetBaseInfluence', morphBaseInfluence );
			program.getUniforms().setValue( gl, 'morphTargetInfluences', morphInfluences );

		}

	}

	return {

		update: update

	};

}

function WebGLObjects( gl, geometries, attributes, info ) {

	let updateMap = new WeakMap();

	function update( object ) {

		const frame = info.render.frame;

		const geometry = object.geometry;
		const buffergeometry = geometries.get( object, geometry );

		// Update once per frame

		if ( updateMap.get( buffergeometry ) !== frame ) {

			geometries.update( buffergeometry );

			updateMap.set( buffergeometry, frame );

		}

		if ( object.isInstancedMesh ) {

			if ( object.hasEventListener( 'dispose', onInstancedMeshDispose ) === false ) {

				object.addEventListener( 'dispose', onInstancedMeshDispose );

			}

			attributes.update( object.instanceMatrix, 34962 );

			if ( object.instanceColor !== null ) {

				attributes.update( object.instanceColor, 34962 );

			}

		}

		return buffergeometry;

	}

	function dispose() {

		updateMap = new WeakMap();

	}

	function onInstancedMeshDispose( event ) {

		const instancedMesh = event.target;

		instancedMesh.removeEventListener( 'dispose', onInstancedMeshDispose );

		attributes.remove( instancedMesh.instanceMatrix );

		if ( instancedMesh.instanceColor !== null ) attributes.remove( instancedMesh.instanceColor );

	}

	return {

		update: update,
		dispose: dispose

	};

}

/**
 * Uniforms of a program.
 * Those form a tree structure with a special top-level container for the root,
 * which you get by calling 'new WebGLUniforms( gl, program )'.
 *
 *
 * Properties of inner nodes including the top-level container:
 *
 * .seq - array of nested uniforms
 * .map - nested uniforms by name
 *
 *
 * Methods of all nodes except the top-level container:
 *
 * .setValue( gl, value, [textures] )
 *
 * 		uploads a uniform value(s)
 *  	the 'textures' parameter is needed for sampler uniforms
 *
 *
 * Static methods of the top-level container (textures factorizations):
 *
 * .upload( gl, seq, values, textures )
 *
 * 		sets uniforms in 'seq' to 'values[id].value'
 *
 * .seqWithValue( seq, values ) : filteredSeq
 *
 * 		filters 'seq' entries with corresponding entry in values
 *
 *
 * Methods of the top-level container (textures factorizations):
 *
 * .setValue( gl, name, value, textures )
 *
 * 		sets uniform with  name 'name' to 'value'
 *
 * .setOptional( gl, obj, prop )
 *
 * 		like .set for an optional property of the object
 *
 */

const emptyTexture = new Texture();
const emptyArrayTexture = new DataArrayTexture();
const empty3dTexture = new Data3DTexture();
const emptyCubeTexture = new CubeTexture();

// --- Utilities ---

// Array Caches (provide typed arrays for temporary by size)

const arrayCacheF32 = [];
const arrayCacheI32 = [];

// Float32Array caches used for uploading Matrix uniforms

const mat4array = new Float32Array( 16 );
const mat3array = new Float32Array( 9 );
const mat2array = new Float32Array( 4 );

// Flattening for arrays of vectors and matrices

function flatten( array, nBlocks, blockSize ) {

	const firstElem = array[ 0 ];

	if ( firstElem <= 0 || firstElem > 0 ) return array;
	// unoptimized: ! isNaN( firstElem )
	// see http://jacksondunstan.com/articles/983

	const n = nBlocks * blockSize;
	let r = arrayCacheF32[ n ];

	if ( r === undefined ) {

		r = new Float32Array( n );
		arrayCacheF32[ n ] = r;

	}

	if ( nBlocks !== 0 ) {

		firstElem.toArray( r, 0 );

		for ( let i = 1, offset = 0; i !== nBlocks; ++ i ) {

			offset += blockSize;
			array[ i ].toArray( r, offset );

		}

	}

	return r;

}

function arraysEqual( a, b ) {

	if ( a.length !== b.length ) return false;

	for ( let i = 0, l = a.length; i < l; i ++ ) {

		if ( a[ i ] !== b[ i ] ) return false;

	}

	return true;

}

function copyArray( a, b ) {

	for ( let i = 0, l = b.length; i < l; i ++ ) {

		a[ i ] = b[ i ];

	}

}

// Texture unit allocation

function allocTexUnits( textures, n ) {

	let r = arrayCacheI32[ n ];

	if ( r === undefined ) {

		r = new Int32Array( n );
		arrayCacheI32[ n ] = r;

	}

	for ( let i = 0; i !== n; ++ i ) {

		r[ i ] = textures.allocateTextureUnit();

	}

	return r;

}

// --- Setters ---

// Note: Defining these methods externally, because they come in a bunch
// and this way their names minify.

// Single scalar

function setValueV1f( gl, v ) {

	const cache = this.cache;

	if ( cache[ 0 ] === v ) return;

	gl.uniform1f( this.addr, v );

	cache[ 0 ] = v;

}

// Single float vector (from flat array or THREE.VectorN)

function setValueV2f( gl, v ) {

	const cache = this.cache;

	if ( v.x !== undefined ) {

		if ( cache[ 0 ] !== v.x || cache[ 1 ] !== v.y ) {

			gl.uniform2f( this.addr, v.x, v.y );

			cache[ 0 ] = v.x;
			cache[ 1 ] = v.y;

		}

	} else {

		if ( arraysEqual( cache, v ) ) return;

		gl.uniform2fv( this.addr, v );

		copyArray( cache, v );

	}

}

function setValueV3f( gl, v ) {

	const cache = this.cache;

	if ( v.x !== undefined ) {

		if ( cache[ 0 ] !== v.x || cache[ 1 ] !== v.y || cache[ 2 ] !== v.z ) {

			gl.uniform3f( this.addr, v.x, v.y, v.z );

			cache[ 0 ] = v.x;
			cache[ 1 ] = v.y;
			cache[ 2 ] = v.z;

		}

	} else if ( v.r !== undefined ) {

		if ( cache[ 0 ] !== v.r || cache[ 1 ] !== v.g || cache[ 2 ] !== v.b ) {

			gl.uniform3f( this.addr, v.r, v.g, v.b );

			cache[ 0 ] = v.r;
			cache[ 1 ] = v.g;
			cache[ 2 ] = v.b;

		}

	} else {

		if ( arraysEqual( cache, v ) ) return;

		gl.uniform3fv( this.addr, v );

		copyArray( cache, v );

	}

}

function setValueV4f( gl, v ) {

	const cache = this.cache;

	if ( v.x !== undefined ) {

		if ( cache[ 0 ] !== v.x || cache[ 1 ] !== v.y || cache[ 2 ] !== v.z || cache[ 3 ] !== v.w ) {

			gl.uniform4f( this.addr, v.x, v.y, v.z, v.w );

			cache[ 0 ] = v.x;
			cache[ 1 ] = v.y;
			cache[ 2 ] = v.z;
			cache[ 3 ] = v.w;

		}

	} else {

		if ( arraysEqual( cache, v ) ) return;

		gl.uniform4fv( this.addr, v );

		copyArray( cache, v );

	}

}

// Single matrix (from flat array or THREE.MatrixN)

function setValueM2( gl, v ) {

	const cache = this.cache;
	const elements = v.elements;

	if ( elements === undefined ) {

		if ( arraysEqual( cache, v ) ) return;

		gl.uniformMatrix2fv( this.addr, false, v );

		copyArray( cache, v );

	} else {

		if ( arraysEqual( cache, elements ) ) return;

		mat2array.set( elements );

		gl.uniformMatrix2fv( this.addr, false, mat2array );

		copyArray( cache, elements );

	}

}

function setValueM3( gl, v ) {

	const cache = this.cache;
	const elements = v.elements;

	if ( elements === undefined ) {

		if ( arraysEqual( cache, v ) ) return;

		gl.uniformMatrix3fv( this.addr, false, v );

		copyArray( cache, v );

	} else {

		if ( arraysEqual( cache, elements ) ) return;

		mat3array.set( elements );

		gl.uniformMatrix3fv( this.addr, false, mat3array );

		copyArray( cache, elements );

	}

}

function setValueM4( gl, v ) {

	const cache = this.cache;
	const elements = v.elements;

	if ( elements === undefined ) {

		if ( arraysEqual( cache, v ) ) return;

		gl.uniformMatrix4fv( this.addr, false, v );

		copyArray( cache, v );

	} else {

		if ( arraysEqual( cache, elements ) ) return;

		mat4array.set( elements );

		gl.uniformMatrix4fv( this.addr, false, mat4array );

		copyArray( cache, elements );

	}

}

// Single integer / boolean

function setValueV1i( gl, v ) {

	const cache = this.cache;

	if ( cache[ 0 ] === v ) return;

	gl.uniform1i( this.addr, v );

	cache[ 0 ] = v;

}

// Single integer / boolean vector (from flat array)

function setValueV2i( gl, v ) {

	const cache = this.cache;

	if ( arraysEqual( cache, v ) ) return;

	gl.uniform2iv( this.addr, v );

	copyArray( cache, v );

}

function setValueV3i( gl, v ) {

	const cache = this.cache;

	if ( arraysEqual( cache, v ) ) return;

	gl.uniform3iv( this.addr, v );

	copyArray( cache, v );

}

function setValueV4i( gl, v ) {

	const cache = this.cache;

	if ( arraysEqual( cache, v ) ) return;

	gl.uniform4iv( this.addr, v );

	copyArray( cache, v );

}

// Single unsigned integer

function setValueV1ui( gl, v ) {

	const cache = this.cache;

	if ( cache[ 0 ] === v ) return;

	gl.uniform1ui( this.addr, v );

	cache[ 0 ] = v;

}

// Single unsigned integer vector (from flat array)

function setValueV2ui( gl, v ) {

	const cache = this.cache;

	if ( arraysEqual( cache, v ) ) return;

	gl.uniform2uiv( this.addr, v );

	copyArray( cache, v );

}

function setValueV3ui( gl, v ) {

	const cache = this.cache;

	if ( arraysEqual( cache, v ) ) return;

	gl.uniform3uiv( this.addr, v );

	copyArray( cache, v );

}

function setValueV4ui( gl, v ) {

	const cache = this.cache;

	if ( arraysEqual( cache, v ) ) return;

	gl.uniform4uiv( this.addr, v );

	copyArray( cache, v );

}


// Single texture (2D / Cube)

function setValueT1( gl, v, textures ) {

	const cache = this.cache;
	const unit = textures.allocateTextureUnit();

	if ( cache[ 0 ] !== unit ) {

		gl.uniform1i( this.addr, unit );
		cache[ 0 ] = unit;

	}

	textures.setTexture2D( v || emptyTexture, unit );

}

function setValueT3D1( gl, v, textures ) {

	const cache = this.cache;
	const unit = textures.allocateTextureUnit();

	if ( cache[ 0 ] !== unit ) {

		gl.uniform1i( this.addr, unit );
		cache[ 0 ] = unit;

	}

	textures.setTexture3D( v || empty3dTexture, unit );

}

function setValueT6( gl, v, textures ) {

	const cache = this.cache;
	const unit = textures.allocateTextureUnit();

	if ( cache[ 0 ] !== unit ) {

		gl.uniform1i( this.addr, unit );
		cache[ 0 ] = unit;

	}

	textures.setTextureCube( v || emptyCubeTexture, unit );

}

function setValueT2DArray1( gl, v, textures ) {

	const cache = this.cache;
	const unit = textures.allocateTextureUnit();

	if ( cache[ 0 ] !== unit ) {

		gl.uniform1i( this.addr, unit );
		cache[ 0 ] = unit;

	}

	textures.setTexture2DArray( v || emptyArrayTexture, unit );

}

// Helper to pick the right setter for the singular case

function getSingularSetter( type ) {

	switch ( type ) {

		case 0x1406: return setValueV1f; // FLOAT
		case 0x8b50: return setValueV2f; // _VEC2
		case 0x8b51: return setValueV3f; // _VEC3
		case 0x8b52: return setValueV4f; // _VEC4

		case 0x8b5a: return setValueM2; // _MAT2
		case 0x8b5b: return setValueM3; // _MAT3
		case 0x8b5c: return setValueM4; // _MAT4

		case 0x1404: case 0x8b56: return setValueV1i; // INT, BOOL
		case 0x8b53: case 0x8b57: return setValueV2i; // _VEC2
		case 0x8b54: case 0x8b58: return setValueV3i; // _VEC3
		case 0x8b55: case 0x8b59: return setValueV4i; // _VEC4

		case 0x1405: return setValueV1ui; // UINT
		case 0x8dc6: return setValueV2ui; // _VEC2
		case 0x8dc7: return setValueV3ui; // _VEC3
		case 0x8dc8: return setValueV4ui; // _VEC4

		case 0x8b5e: // SAMPLER_2D
		case 0x8d66: // SAMPLER_EXTERNAL_OES
		case 0x8dca: // INT_SAMPLER_2D
		case 0x8dd2: // UNSIGNED_INT_SAMPLER_2D
		case 0x8b62: // SAMPLER_2D_SHADOW
			return setValueT1;

		case 0x8b5f: // SAMPLER_3D
		case 0x8dcb: // INT_SAMPLER_3D
		case 0x8dd3: // UNSIGNED_INT_SAMPLER_3D
			return setValueT3D1;

		case 0x8b60: // SAMPLER_CUBE
		case 0x8dcc: // INT_SAMPLER_CUBE
		case 0x8dd4: // UNSIGNED_INT_SAMPLER_CUBE
		case 0x8dc5: // SAMPLER_CUBE_SHADOW
			return setValueT6;

		case 0x8dc1: // SAMPLER_2D_ARRAY
		case 0x8dcf: // INT_SAMPLER_2D_ARRAY
		case 0x8dd7: // UNSIGNED_INT_SAMPLER_2D_ARRAY
		case 0x8dc4: // SAMPLER_2D_ARRAY_SHADOW
			return setValueT2DArray1;

	}

}


// Array of scalars

function setValueV1fArray( gl, v ) {

	gl.uniform1fv( this.addr, v );

}

// Array of vectors (from flat array or array of THREE.VectorN)

function setValueV2fArray( gl, v ) {

	const data = flatten( v, this.size, 2 );

	gl.uniform2fv( this.addr, data );

}

function setValueV3fArray( gl, v ) {

	const data = flatten( v, this.size, 3 );

	gl.uniform3fv( this.addr, data );

}

function setValueV4fArray( gl, v ) {

	const data = flatten( v, this.size, 4 );

	gl.uniform4fv( this.addr, data );

}

// Array of matrices (from flat array or array of THREE.MatrixN)

function setValueM2Array( gl, v ) {

	const data = flatten( v, this.size, 4 );

	gl.uniformMatrix2fv( this.addr, false, data );

}

function setValueM3Array( gl, v ) {

	const data = flatten( v, this.size, 9 );

	gl.uniformMatrix3fv( this.addr, false, data );

}

function setValueM4Array( gl, v ) {

	const data = flatten( v, this.size, 16 );

	gl.uniformMatrix4fv( this.addr, false, data );

}

// Array of integer / boolean

function setValueV1iArray( gl, v ) {

	gl.uniform1iv( this.addr, v );

}

// Array of integer / boolean vectors (from flat array)

function setValueV2iArray( gl, v ) {

	gl.uniform2iv( this.addr, v );

}

function setValueV3iArray( gl, v ) {

	gl.uniform3iv( this.addr, v );

}

function setValueV4iArray( gl, v ) {

	gl.uniform4iv( this.addr, v );

}

// Array of unsigned integer

function setValueV1uiArray( gl, v ) {

	gl.uniform1uiv( this.addr, v );

}

// Array of unsigned integer vectors (from flat array)

function setValueV2uiArray( gl, v ) {

	gl.uniform2uiv( this.addr, v );

}

function setValueV3uiArray( gl, v ) {

	gl.uniform3uiv( this.addr, v );

}

function setValueV4uiArray( gl, v ) {

	gl.uniform4uiv( this.addr, v );

}


// Array of textures (2D / 3D / Cube / 2DArray)

function setValueT1Array( gl, v, textures ) {

	const n = v.length;

	const units = allocTexUnits( textures, n );

	gl.uniform1iv( this.addr, units );

	for ( let i = 0; i !== n; ++ i ) {

		textures.setTexture2D( v[ i ] || emptyTexture, units[ i ] );

	}

}

function setValueT3DArray( gl, v, textures ) {

	const n = v.length;

	const units = allocTexUnits( textures, n );

	gl.uniform1iv( this.addr, units );

	for ( let i = 0; i !== n; ++ i ) {

		textures.setTexture3D( v[ i ] || empty3dTexture, units[ i ] );

	}

}

function setValueT6Array( gl, v, textures ) {

	const n = v.length;

	const units = allocTexUnits( textures, n );

	gl.uniform1iv( this.addr, units );

	for ( let i = 0; i !== n; ++ i ) {

		textures.setTextureCube( v[ i ] || emptyCubeTexture, units[ i ] );

	}

}

function setValueT2DArrayArray( gl, v, textures ) {

	const n = v.length;

	const units = allocTexUnits( textures, n );

	gl.uniform1iv( this.addr, units );

	for ( let i = 0; i !== n; ++ i ) {

		textures.setTexture2DArray( v[ i ] || emptyArrayTexture, units[ i ] );

	}

}


// Helper to pick the right setter for a pure (bottom-level) array

function getPureArraySetter( type ) {

	switch ( type ) {

		case 0x1406: return setValueV1fArray; // FLOAT
		case 0x8b50: return setValueV2fArray; // _VEC2
		case 0x8b51: return setValueV3fArray; // _VEC3
		case 0x8b52: return setValueV4fArray; // _VEC4

		case 0x8b5a: return setValueM2Array; // _MAT2
		case 0x8b5b: return setValueM3Array; // _MAT3
		case 0x8b5c: return setValueM4Array; // _MAT4

		case 0x1404: case 0x8b56: return setValueV1iArray; // INT, BOOL
		case 0x8b53: case 0x8b57: return setValueV2iArray; // _VEC2
		case 0x8b54: case 0x8b58: return setValueV3iArray; // _VEC3
		case 0x8b55: case 0x8b59: return setValueV4iArray; // _VEC4

		case 0x1405: return setValueV1uiArray; // UINT
		case 0x8dc6: return setValueV2uiArray; // _VEC2
		case 0x8dc7: return setValueV3uiArray; // _VEC3
		case 0x8dc8: return setValueV4uiArray; // _VEC4

		case 0x8b5e: // SAMPLER_2D
		case 0x8d66: // SAMPLER_EXTERNAL_OES
		case 0x8dca: // INT_SAMPLER_2D
		case 0x8dd2: // UNSIGNED_INT_SAMPLER_2D
		case 0x8b62: // SAMPLER_2D_SHADOW
			return setValueT1Array;

		case 0x8b5f: // SAMPLER_3D
		case 0x8dcb: // INT_SAMPLER_3D
		case 0x8dd3: // UNSIGNED_INT_SAMPLER_3D
			return setValueT3DArray;

		case 0x8b60: // SAMPLER_CUBE
		case 0x8dcc: // INT_SAMPLER_CUBE
		case 0x8dd4: // UNSIGNED_INT_SAMPLER_CUBE
		case 0x8dc5: // SAMPLER_CUBE_SHADOW
			return setValueT6Array;

		case 0x8dc1: // SAMPLER_2D_ARRAY
		case 0x8dcf: // INT_SAMPLER_2D_ARRAY
		case 0x8dd7: // UNSIGNED_INT_SAMPLER_2D_ARRAY
		case 0x8dc4: // SAMPLER_2D_ARRAY_SHADOW
			return setValueT2DArrayArray;

	}

}

// --- Uniform Classes ---

function SingleUniform( id, activeInfo, addr ) {

	this.id = id;
	this.addr = addr;
	this.cache = [];
	this.setValue = getSingularSetter( activeInfo.type );

	// this.path = activeInfo.name; // DEBUG

}

function PureArrayUniform( id, activeInfo, addr ) {

	this.id = id;
	this.addr = addr;
	this.cache = [];
	this.size = activeInfo.size;
	this.setValue = getPureArraySetter( activeInfo.type );

	// this.path = activeInfo.name; // DEBUG

}

PureArrayUniform.prototype.updateCache = function ( data ) {

	const cache = this.cache;

	if ( data instanceof Float32Array && cache.length !== data.length ) {

		this.cache = new Float32Array( data.length );

	}

	copyArray( cache, data );

};

function StructuredUniform( id ) {

	this.id = id;

	this.seq = [];
	this.map = {};

}

StructuredUniform.prototype.setValue = function ( gl, value, textures ) {

	const seq = this.seq;

	for ( let i = 0, n = seq.length; i !== n; ++ i ) {

		const u = seq[ i ];
		u.setValue( gl, value[ u.id ], textures );

	}

};

// --- Top-level ---

// Parser - builds up the property tree from the path strings

const RePathPart = /(\w+)(\])?(\[|\.)?/g;

// extracts
// 	- the identifier (member name or array index)
//  - followed by an optional right bracket (found when array index)
//  - followed by an optional left bracket or dot (type of subscript)
//
// Note: These portions can be read in a non-overlapping fashion and
// allow straightforward parsing of the hierarchy that WebGL encodes
// in the uniform names.

function addUniform( container, uniformObject ) {

	container.seq.push( uniformObject );
	container.map[ uniformObject.id ] = uniformObject;

}

function parseUniform( activeInfo, addr, container ) {

	const path = activeInfo.name,
		pathLength = path.length;

	// reset RegExp object, because of the early exit of a previous run
	RePathPart.lastIndex = 0;

	while ( true ) {

		const match = RePathPart.exec( path ),
			matchEnd = RePathPart.lastIndex;

		let id = match[ 1 ];
		const idIsIndex = match[ 2 ] === ']',
			subscript = match[ 3 ];

		if ( idIsIndex ) id = id | 0; // convert to integer

		if ( subscript === undefined || subscript === '[' && matchEnd + 2 === pathLength ) {

			// bare name or "pure" bottom-level array "[0]" suffix

			addUniform( container, subscript === undefined ?
				new SingleUniform( id, activeInfo, addr ) :
				new PureArrayUniform( id, activeInfo, addr ) );

			break;

		} else {

			// step into inner node / create it in case it doesn't exist

			const map = container.map;
			let next = map[ id ];

			if ( next === undefined ) {

				next = new StructuredUniform( id );
				addUniform( container, next );

			}

			container = next;

		}

	}

}

// Root Container

function WebGLUniforms( gl, program ) {

	this.seq = [];
	this.map = {};

	const n = gl.getProgramParameter( program, 35718 );

	for ( let i = 0; i < n; ++ i ) {

		const info = gl.getActiveUniform( program, i ),
			addr = gl.getUniformLocation( program, info.name );

		parseUniform( info, addr, this );

	}

}

WebGLUniforms.prototype.setValue = function ( gl, name, value, textures ) {

	const u = this.map[ name ];

	if ( u !== undefined ) u.setValue( gl, value, textures );

};

WebGLUniforms.prototype.setOptional = function ( gl, object, name ) {

	const v = object[ name ];

	if ( v !== undefined ) this.setValue( gl, name, v );

};


// Static interface

WebGLUniforms.upload = function ( gl, seq, values, textures ) {

	for ( let i = 0, n = seq.length; i !== n; ++ i ) {

		const u = seq[ i ],
			v = values[ u.id ];

		if ( v.needsUpdate !== false ) {

			// note: always updating when .needsUpdate is undefined
			u.setValue( gl, v.value, textures );

		}

	}

};

WebGLUniforms.seqWithValue = function ( seq, values ) {

	const r = [];

	for ( let i = 0, n = seq.length; i !== n; ++ i ) {

		const u = seq[ i ];
		if ( u.id in values ) r.push( u );

	}

	return r;

};

function WebGLShader( gl, type, string ) {

	const shader = gl.createShader( type );

	gl.shaderSource( shader, string );
	gl.compileShader( shader );

	return shader;

}

let programIdCount = 0;

function addLineNumbers( string ) {

	const lines = string.split( '\n' );

	for ( let i = 0; i < lines.length; i ++ ) {

		lines[ i ] = ( i + 1 ) + ': ' + lines[ i ];

	}

	return lines.join( '\n' );

}

function getEncodingComponents( encoding ) {

	switch ( encoding ) {

		case LinearEncoding:
			return [ 'Linear', '( value )' ];
		case sRGBEncoding:
			return [ 'sRGB', '( value )' ];
		default:
			console.warn( 'THREE.WebGLProgram: Unsupported encoding:', encoding );
			return [ 'Linear', '( value )' ];

	}

}

function getShaderErrors( gl, shader, type ) {

	const status = gl.getShaderParameter( shader, 35713 );
	const errors = gl.getShaderInfoLog( shader ).trim();

	if ( status && errors === '' ) return '';

	// --enable-privileged-webgl-extension
	// console.log( '**' + type + '**', gl.getExtension( 'WEBGL_debug_shaders' ).getTranslatedShaderSource( shader ) );

	return type.toUpperCase() + '\n\n' + errors + '\n\n' + addLineNumbers( gl.getShaderSource( shader ) );

}

function getTexelEncodingFunction( functionName, encoding ) {

	const components = getEncodingComponents( encoding );
	return 'vec4 ' + functionName + '( vec4 value ) { return LinearTo' + components[ 0 ] + components[ 1 ] + '; }';

}

function getToneMappingFunction( functionName, toneMapping ) {

	let toneMappingName;

	switch ( toneMapping ) {

		case LinearToneMapping:
			toneMappingName = 'Linear';
			break;

		case ReinhardToneMapping:
			toneMappingName = 'Reinhard';
			break;

		case CineonToneMapping:
			toneMappingName = 'OptimizedCineon';
			break;

		case ACESFilmicToneMapping:
			toneMappingName = 'ACESFilmic';
			break;

		case CustomToneMapping:
			toneMappingName = 'Custom';
			break;

		default:
			console.warn( 'THREE.WebGLProgram: Unsupported toneMapping:', toneMapping );
			toneMappingName = 'Linear';

	}

	return 'vec3 ' + functionName + '( vec3 color ) { return ' + toneMappingName + 'ToneMapping( color ); }';

}

function generateExtensions( parameters ) {

	const chunks = [
		( parameters.extensionDerivatives || !! parameters.envMapCubeUVHeight || parameters.bumpMap || parameters.tangentSpaceNormalMap || parameters.clearcoatNormalMap || parameters.flatShading || parameters.shaderID === 'physical' ) ? '#extension GL_OES_standard_derivatives : enable' : '',
		( parameters.extensionFragDepth || parameters.logarithmicDepthBuffer ) && parameters.rendererExtensionFragDepth ? '#extension GL_EXT_frag_depth : enable' : '',
		( parameters.extensionDrawBuffers && parameters.rendererExtensionDrawBuffers ) ? '#extension GL_EXT_draw_buffers : require' : '',
		( parameters.extensionShaderTextureLOD || parameters.envMap || parameters.transmission ) && parameters.rendererExtensionShaderTextureLod ? '#extension GL_EXT_shader_texture_lod : enable' : ''
	];

	return chunks.filter( filterEmptyLine ).join( '\n' );

}

function generateDefines( defines ) {

	const chunks = [];

	for ( const name in defines ) {

		const value = defines[ name ];

		if ( value === false ) continue;

		chunks.push( '#define ' + name + ' ' + value );

	}

	return chunks.join( '\n' );

}

function fetchAttributeLocations( gl, program ) {

	const attributes = {};

	const n = gl.getProgramParameter( program, 35721 );

	for ( let i = 0; i < n; i ++ ) {

		const info = gl.getActiveAttrib( program, i );
		const name = info.name;

		let locationSize = 1;
		if ( info.type === 35674 ) locationSize = 2;
		if ( info.type === 35675 ) locationSize = 3;
		if ( info.type === 35676 ) locationSize = 4;

		// console.log( 'THREE.WebGLProgram: ACTIVE VERTEX ATTRIBUTE:', name, i );

		attributes[ name ] = {
			type: info.type,
			location: gl.getAttribLocation( program, name ),
			locationSize: locationSize
		};

	}

	return attributes;

}

function filterEmptyLine( string ) {

	return string !== '';

}

function replaceLightNums( string, parameters ) {

	return string
		.replace( /NUM_DIR_LIGHTS/g, parameters.numDirLights )
		.replace( /NUM_SPOT_LIGHTS/g, parameters.numSpotLights )
		.replace( /NUM_RECT_AREA_LIGHTS/g, parameters.numRectAreaLights )
		.replace( /NUM_POINT_LIGHTS/g, parameters.numPointLights )
		.replace( /NUM_HEMI_LIGHTS/g, parameters.numHemiLights )
		.replace( /NUM_DIR_LIGHT_SHADOWS/g, parameters.numDirLightShadows )
		.replace( /NUM_SPOT_LIGHT_SHADOWS/g, parameters.numSpotLightShadows )
		.replace( /NUM_POINT_LIGHT_SHADOWS/g, parameters.numPointLightShadows );

}

function replaceClippingPlaneNums( string, parameters ) {

	return string
		.replace( /NUM_CLIPPING_PLANES/g, parameters.numClippingPlanes )
		.replace( /UNION_CLIPPING_PLANES/g, ( parameters.numClippingPlanes - parameters.numClipIntersection ) );

}

// Resolve Includes

const includePattern = /^[ \t]*#include +<([\w\d./]+)>/gm;

function resolveIncludes( string ) {

	return string.replace( includePattern, includeReplacer );

}

function includeReplacer( match, include ) {

	const string = ShaderChunk[ include ];

	if ( string === undefined ) {

		throw new Error( 'Can not resolve #include <' + include + '>' );

	}

	return resolveIncludes( string );

}

// Unroll Loops

const deprecatedUnrollLoopPattern = /#pragma unroll_loop[\s]+?for \( int i \= (\d+)\; i < (\d+)\; i \+\+ \) \{([\s\S]+?)(?=\})\}/g;
const unrollLoopPattern = /#pragma unroll_loop_start\s+for\s*\(\s*int\s+i\s*=\s*(\d+)\s*;\s*i\s*<\s*(\d+)\s*;\s*i\s*\+\+\s*\)\s*{([\s\S]+?)}\s+#pragma unroll_loop_end/g;

function unrollLoops( string ) {

	return string
		.replace( unrollLoopPattern, loopReplacer )
		.replace( deprecatedUnrollLoopPattern, deprecatedLoopReplacer );

}

function deprecatedLoopReplacer( match, start, end, snippet ) {

	console.warn( 'WebGLProgram: #pragma unroll_loop shader syntax is deprecated. Please use #pragma unroll_loop_start syntax instead.' );
	return loopReplacer( match, start, end, snippet );

}

function loopReplacer( match, start, end, snippet ) {

	let string = '';

	for ( let i = parseInt( start ); i < parseInt( end ); i ++ ) {

		string += snippet
			.replace( /\[\s*i\s*\]/g, '[ ' + i + ' ]' )
			.replace( /UNROLLED_LOOP_INDEX/g, i );

	}

	return string;

}

//

function generatePrecision( parameters ) {

	let precisionstring = 'precision ' + parameters.precision + ' float;\nprecision ' + parameters.precision + ' int;';

	if ( parameters.precision === 'highp' ) {

		precisionstring += '\n#define HIGH_PRECISION';

	} else if ( parameters.precision === 'mediump' ) {

		precisionstring += '\n#define MEDIUM_PRECISION';

	} else if ( parameters.precision === 'lowp' ) {

		precisionstring += '\n#define LOW_PRECISION';

	}

	return precisionstring;

}

function generateShadowMapTypeDefine( parameters ) {

	let shadowMapTypeDefine = 'SHADOWMAP_TYPE_BASIC';

	if ( parameters.shadowMapType === PCFShadowMap ) {

		shadowMapTypeDefine = 'SHADOWMAP_TYPE_PCF';

	} else if ( parameters.shadowMapType === PCFSoftShadowMap ) {

		shadowMapTypeDefine = 'SHADOWMAP_TYPE_PCF_SOFT';

	} else if ( parameters.shadowMapType === VSMShadowMap ) {

		shadowMapTypeDefine = 'SHADOWMAP_TYPE_VSM';

	}

	return shadowMapTypeDefine;

}

function generateEnvMapTypeDefine( parameters ) {

	let envMapTypeDefine = 'ENVMAP_TYPE_CUBE';

	if ( parameters.envMap ) {

		switch ( parameters.envMapMode ) {

			case CubeReflectionMapping:
			case CubeRefractionMapping:
				envMapTypeDefine = 'ENVMAP_TYPE_CUBE';
				break;

			case CubeUVReflectionMapping:
			case CubeUVRefractionMapping:
				envMapTypeDefine = 'ENVMAP_TYPE_CUBE_UV';
				break;

		}

	}

	return envMapTypeDefine;

}

function generateEnvMapModeDefine( parameters ) {

	let envMapModeDefine = 'ENVMAP_MODE_REFLECTION';

	if ( parameters.envMap ) {

		switch ( parameters.envMapMode ) {

			case CubeRefractionMapping:
			case CubeUVRefractionMapping:

				envMapModeDefine = 'ENVMAP_MODE_REFRACTION';
				break;

		}

	}

	return envMapModeDefine;

}

function generateEnvMapBlendingDefine( parameters ) {

	let envMapBlendingDefine = 'ENVMAP_BLENDING_NONE';

	if ( parameters.envMap ) {

		switch ( parameters.combine ) {

			case MultiplyOperation:
				envMapBlendingDefine = 'ENVMAP_BLENDING_MULTIPLY';
				break;

			case MixOperation:
				envMapBlendingDefine = 'ENVMAP_BLENDING_MIX';
				break;

			case AddOperation:
				envMapBlendingDefine = 'ENVMAP_BLENDING_ADD';
				break;

		}

	}

	return envMapBlendingDefine;

}

function generateCubeUVSize( parameters ) {

	const imageHeight = parameters.envMapCubeUVHeight;

	if ( imageHeight === null ) return null;

	const maxMip = Math.log2( imageHeight / 32 + 1 ) + 3;

	const texelHeight = 1.0 / imageHeight;

	const texelWidth = 1.0 / ( 3 * Math.max( Math.pow( 2, maxMip ), 7 * 16 ) );

	return { texelWidth, texelHeight, maxMip };

}

function WebGLProgram( renderer, cacheKey, parameters, bindingStates ) {

	// TODO Send this event to Three.js DevTools
	// console.log( 'WebGLProgram', cacheKey );

	const gl = renderer.getContext();

	const defines = parameters.defines;

	let vertexShader = parameters.vertexShader;
	let fragmentShader = parameters.fragmentShader;

	const shadowMapTypeDefine = generateShadowMapTypeDefine( parameters );
	const envMapTypeDefine = generateEnvMapTypeDefine( parameters );
	const envMapModeDefine = generateEnvMapModeDefine( parameters );
	const envMapBlendingDefine = generateEnvMapBlendingDefine( parameters );
	const envMapCubeUVSize = generateCubeUVSize( parameters );

	const customExtensions = parameters.isWebGL2 ? '' : generateExtensions( parameters );

	const customDefines = generateDefines( defines );

	const program = gl.createProgram();

	let prefixVertex, prefixFragment;
	let versionString = parameters.glslVersion ? '#version ' + parameters.glslVersion + '\n' : '';

	if ( parameters.isRawShaderMaterial ) {

		prefixVertex = [

			customDefines

		].filter( filterEmptyLine ).join( '\n' );

		if ( prefixVertex.length > 0 ) {

			prefixVertex += '\n';

		}

		prefixFragment = [

			customExtensions,
			customDefines

		].filter( filterEmptyLine ).join( '\n' );

		if ( prefixFragment.length > 0 ) {

			prefixFragment += '\n';

		}

	} else {

		prefixVertex = [

			generatePrecision( parameters ),

			'#define SHADER_NAME ' + parameters.shaderName,

			customDefines,

			parameters.instancing ? '#define USE_INSTANCING' : '',
			parameters.instancingColor ? '#define USE_INSTANCING_COLOR' : '',

			parameters.supportsVertexTextures ? '#define VERTEX_TEXTURES' : '',

			'#define MAX_BONES ' + parameters.maxBones,
			( parameters.useFog && parameters.fog ) ? '#define USE_FOG' : '',
			( parameters.useFog && parameters.fogExp2 ) ? '#define FOG_EXP2' : '',

			parameters.map ? '#define USE_MAP' : '',
			parameters.envMap ? '#define USE_ENVMAP' : '',
			parameters.envMap ? '#define ' + envMapModeDefine : '',
			parameters.lightMap ? '#define USE_LIGHTMAP' : '',
			parameters.aoMap ? '#define USE_AOMAP' : '',
			parameters.emissiveMap ? '#define USE_EMISSIVEMAP' : '',
			parameters.bumpMap ? '#define USE_BUMPMAP' : '',
			parameters.normalMap ? '#define USE_NORMALMAP' : '',
			( parameters.normalMap && parameters.objectSpaceNormalMap ) ? '#define OBJECTSPACE_NORMALMAP' : '',
			( parameters.normalMap && parameters.tangentSpaceNormalMap ) ? '#define TANGENTSPACE_NORMALMAP' : '',

			parameters.clearcoatMap ? '#define USE_CLEARCOATMAP' : '',
			parameters.clearcoatRoughnessMap ? '#define USE_CLEARCOAT_ROUGHNESSMAP' : '',
			parameters.clearcoatNormalMap ? '#define USE_CLEARCOAT_NORMALMAP' : '',

			parameters.displacementMap && parameters.supportsVertexTextures ? '#define USE_DISPLACEMENTMAP' : '',

			parameters.specularMap ? '#define USE_SPECULARMAP' : '',
			parameters.specularIntensityMap ? '#define USE_SPECULARINTENSITYMAP' : '',
			parameters.specularColorMap ? '#define USE_SPECULARCOLORMAP' : '',

			parameters.roughnessMap ? '#define USE_ROUGHNESSMAP' : '',
			parameters.metalnessMap ? '#define USE_METALNESSMAP' : '',
			parameters.alphaMap ? '#define USE_ALPHAMAP' : '',

			parameters.transmission ? '#define USE_TRANSMISSION' : '',
			parameters.transmissionMap ? '#define USE_TRANSMISSIONMAP' : '',
			parameters.thicknessMap ? '#define USE_THICKNESSMAP' : '',

			parameters.sheenColorMap ? '#define USE_SHEENCOLORMAP' : '',
			parameters.sheenRoughnessMap ? '#define USE_SHEENROUGHNESSMAP' : '',

			parameters.vertexTangents ? '#define USE_TANGENT' : '',
			parameters.vertexColors ? '#define USE_COLOR' : '',
			parameters.vertexAlphas ? '#define USE_COLOR_ALPHA' : '',
			parameters.vertexUvs ? '#define USE_UV' : '',
			parameters.uvsVertexOnly ? '#define UVS_VERTEX_ONLY' : '',

			parameters.flatShading ? '#define FLAT_SHADED' : '',

			parameters.skinning ? '#define USE_SKINNING' : '',
			parameters.useVertexTexture ? '#define BONE_TEXTURE' : '',

			parameters.morphTargets ? '#define USE_MORPHTARGETS' : '',
			parameters.morphNormals && parameters.flatShading === false ? '#define USE_MORPHNORMALS' : '',
			( parameters.morphColors && parameters.isWebGL2 ) ? '#define USE_MORPHCOLORS' : '',
			( parameters.morphTargetsCount > 0 && parameters.isWebGL2 ) ? '#define MORPHTARGETS_TEXTURE' : '',
			( parameters.morphTargetsCount > 0 && parameters.isWebGL2 ) ? '#define MORPHTARGETS_TEXTURE_STRIDE ' + parameters.morphTextureStride : '',
			( parameters.morphTargetsCount > 0 && parameters.isWebGL2 ) ? '#define MORPHTARGETS_COUNT ' + parameters.morphTargetsCount : '',
			parameters.doubleSided ? '#define DOUBLE_SIDED' : '',
			parameters.flipSided ? '#define FLIP_SIDED' : '',

			parameters.shadowMapEnabled ? '#define USE_SHADOWMAP' : '',
			parameters.shadowMapEnabled ? '#define ' + shadowMapTypeDefine : '',

			parameters.sizeAttenuation ? '#define USE_SIZEATTENUATION' : '',

			parameters.logarithmicDepthBuffer ? '#define USE_LOGDEPTHBUF' : '',
			( parameters.logarithmicDepthBuffer && parameters.rendererExtensionFragDepth ) ? '#define USE_LOGDEPTHBUF_EXT' : '',

			'uniform mat4 modelMatrix;',
			'uniform mat4 modelViewMatrix;',
			'uniform mat4 projectionMatrix;',
			'uniform mat4 viewMatrix;',
			'uniform mat3 normalMatrix;',
			'uniform vec3 cameraPosition;',
			'uniform bool isOrthographic;',

			'#ifdef USE_INSTANCING',

			'	attribute mat4 instanceMatrix;',

			'#endif',

			'#ifdef USE_INSTANCING_COLOR',

			'	attribute vec3 instanceColor;',

			'#endif',

			'attribute vec3 position;',
			'attribute vec3 normal;',
			'attribute vec2 uv;',

			'#ifdef USE_TANGENT',

			'	attribute vec4 tangent;',

			'#endif',

			'#if defined( USE_COLOR_ALPHA )',

			'	attribute vec4 color;',

			'#elif defined( USE_COLOR )',

			'	attribute vec3 color;',

			'#endif',

			'#if ( defined( USE_MORPHTARGETS ) && ! defined( MORPHTARGETS_TEXTURE ) )',

			'	attribute vec3 morphTarget0;',
			'	attribute vec3 morphTarget1;',
			'	attribute vec3 morphTarget2;',
			'	attribute vec3 morphTarget3;',

			'	#ifdef USE_MORPHNORMALS',

			'		attribute vec3 morphNormal0;',
			'		attribute vec3 morphNormal1;',
			'		attribute vec3 morphNormal2;',
			'		attribute vec3 morphNormal3;',

			'	#else',

			'		attribute vec3 morphTarget4;',
			'		attribute vec3 morphTarget5;',
			'		attribute vec3 morphTarget6;',
			'		attribute vec3 morphTarget7;',

			'	#endif',

			'#endif',

			'#ifdef USE_SKINNING',

			'	attribute vec4 skinIndex;',
			'	attribute vec4 skinWeight;',

			'#endif',

			'\n'

		].filter( filterEmptyLine ).join( '\n' );

		prefixFragment = [

			customExtensions,

			generatePrecision( parameters ),

			'#define SHADER_NAME ' + parameters.shaderName,

			customDefines,

			( parameters.useFog && parameters.fog ) ? '#define USE_FOG' : '',
			( parameters.useFog && parameters.fogExp2 ) ? '#define FOG_EXP2' : '',

			parameters.map ? '#define USE_MAP' : '',
			parameters.matcap ? '#define USE_MATCAP' : '',
			parameters.envMap ? '#define USE_ENVMAP' : '',
			parameters.envMap ? '#define ' + envMapTypeDefine : '',
			parameters.envMap ? '#define ' + envMapModeDefine : '',
			parameters.envMap ? '#define ' + envMapBlendingDefine : '',
			envMapCubeUVSize ? '#define CUBEUV_TEXEL_WIDTH ' + envMapCubeUVSize.texelWidth : '',
			envMapCubeUVSize ? '#define CUBEUV_TEXEL_HEIGHT ' + envMapCubeUVSize.texelHeight : '',
			envMapCubeUVSize ? '#define CUBEUV_MAX_MIP ' + envMapCubeUVSize.maxMip + '.0' : '',
			parameters.lightMap ? '#define USE_LIGHTMAP' : '',
			parameters.aoMap ? '#define USE_AOMAP' : '',
			parameters.emissiveMap ? '#define USE_EMISSIVEMAP' : '',
			parameters.bumpMap ? '#define USE_BUMPMAP' : '',
			parameters.normalMap ? '#define USE_NORMALMAP' : '',
			( parameters.normalMap && parameters.objectSpaceNormalMap ) ? '#define OBJECTSPACE_NORMALMAP' : '',
			( parameters.normalMap && parameters.tangentSpaceNormalMap ) ? '#define TANGENTSPACE_NORMALMAP' : '',

			parameters.clearcoat ? '#define USE_CLEARCOAT' : '',
			parameters.clearcoatMap ? '#define USE_CLEARCOATMAP' : '',
			parameters.clearcoatRoughnessMap ? '#define USE_CLEARCOAT_ROUGHNESSMAP' : '',
			parameters.clearcoatNormalMap ? '#define USE_CLEARCOAT_NORMALMAP' : '',

			parameters.specularMap ? '#define USE_SPECULARMAP' : '',
			parameters.specularIntensityMap ? '#define USE_SPECULARINTENSITYMAP' : '',
			parameters.specularColorMap ? '#define USE_SPECULARCOLORMAP' : '',
			parameters.roughnessMap ? '#define USE_ROUGHNESSMAP' : '',
			parameters.metalnessMap ? '#define USE_METALNESSMAP' : '',

			parameters.alphaMap ? '#define USE_ALPHAMAP' : '',
			parameters.alphaTest ? '#define USE_ALPHATEST' : '',

			parameters.sheen ? '#define USE_SHEEN' : '',
			parameters.sheenColorMap ? '#define USE_SHEENCOLORMAP' : '',
			parameters.sheenRoughnessMap ? '#define USE_SHEENROUGHNESSMAP' : '',

			parameters.transmission ? '#define USE_TRANSMISSION' : '',
			parameters.transmissionMap ? '#define USE_TRANSMISSIONMAP' : '',
			parameters.thicknessMap ? '#define USE_THICKNESSMAP' : '',

			parameters.decodeVideoTexture ? '#define DECODE_VIDEO_TEXTURE' : '',

			parameters.vertexTangents ? '#define USE_TANGENT' : '',
			parameters.vertexColors || parameters.instancingColor ? '#define USE_COLOR' : '',
			parameters.vertexAlphas ? '#define USE_COLOR_ALPHA' : '',
			parameters.vertexUvs ? '#define USE_UV' : '',
			parameters.uvsVertexOnly ? '#define UVS_VERTEX_ONLY' : '',

			parameters.gradientMap ? '#define USE_GRADIENTMAP' : '',

			parameters.flatShading ? '#define FLAT_SHADED' : '',

			parameters.doubleSided ? '#define DOUBLE_SIDED' : '',
			parameters.flipSided ? '#define FLIP_SIDED' : '',

			parameters.shadowMapEnabled ? '#define USE_SHADOWMAP' : '',
			parameters.shadowMapEnabled ? '#define ' + shadowMapTypeDefine : '',

			parameters.premultipliedAlpha ? '#define PREMULTIPLIED_ALPHA' : '',

			parameters.physicallyCorrectLights ? '#define PHYSICALLY_CORRECT_LIGHTS' : '',

			parameters.logarithmicDepthBuffer ? '#define USE_LOGDEPTHBUF' : '',
			( parameters.logarithmicDepthBuffer && parameters.rendererExtensionFragDepth ) ? '#define USE_LOGDEPTHBUF_EXT' : '',

			'uniform mat4 viewMatrix;',
			'uniform vec3 cameraPosition;',
			'uniform bool isOrthographic;',

			( parameters.toneMapping !== NoToneMapping ) ? '#define TONE_MAPPING' : '',
			( parameters.toneMapping !== NoToneMapping ) ? ShaderChunk[ 'tonemapping_pars_fragment' ] : '', // this code is required here because it is used by the toneMapping() function defined below
			( parameters.toneMapping !== NoToneMapping ) ? getToneMappingFunction( 'toneMapping', parameters.toneMapping ) : '',

			parameters.dithering ? '#define DITHERING' : '',
			parameters.opaque ? '#define OPAQUE' : '',

			ShaderChunk[ 'encodings_pars_fragment' ], // this code is required here because it is used by the various encoding/decoding function defined below
			getTexelEncodingFunction( 'linearToOutputTexel', parameters.outputEncoding ),

			parameters.depthPacking ? '#define DEPTH_PACKING ' + parameters.depthPacking : '',

			'\n'

		].filter( filterEmptyLine ).join( '\n' );

	}

	vertexShader = resolveIncludes( vertexShader );
	vertexShader = replaceLightNums( vertexShader, parameters );
	vertexShader = replaceClippingPlaneNums( vertexShader, parameters );

	fragmentShader = resolveIncludes( fragmentShader );
	fragmentShader = replaceLightNums( fragmentShader, parameters );
	fragmentShader = replaceClippingPlaneNums( fragmentShader, parameters );

	vertexShader = unrollLoops( vertexShader );
	fragmentShader = unrollLoops( fragmentShader );

	if ( parameters.isWebGL2 && parameters.isRawShaderMaterial !== true ) {

		// GLSL 3.0 conversion for built-in materials and ShaderMaterial

		versionString = '#version 300 es\n';

		prefixVertex = [
			'precision mediump sampler2DArray;',
			'#define attribute in',
			'#define varying out',
			'#define texture2D texture'
		].join( '\n' ) + '\n' + prefixVertex;

		prefixFragment = [
			'#define varying in',
			( parameters.glslVersion === GLSL3 ) ? '' : 'layout(location = 0) out highp vec4 pc_fragColor;',
			( parameters.glslVersion === GLSL3 ) ? '' : '#define gl_FragColor pc_fragColor',
			'#define gl_FragDepthEXT gl_FragDepth',
			'#define texture2D texture',
			'#define textureCube texture',
			'#define texture2DProj textureProj',
			'#define texture2DLodEXT textureLod',
			'#define texture2DProjLodEXT textureProjLod',
			'#define textureCubeLodEXT textureLod',
			'#define texture2DGradEXT textureGrad',
			'#define texture2DProjGradEXT textureProjGrad',
			'#define textureCubeGradEXT textureGrad'
		].join( '\n' ) + '\n' + prefixFragment;

	}

	const vertexGlsl = versionString + prefixVertex + vertexShader;
	const fragmentGlsl = versionString + prefixFragment + fragmentShader;

	// console.log( '*VERTEX*', vertexGlsl );
	// console.log( '*FRAGMENT*', fragmentGlsl );

	const glVertexShader = WebGLShader( gl, 35633, vertexGlsl );
	const glFragmentShader = WebGLShader( gl, 35632, fragmentGlsl );

	gl.attachShader( program, glVertexShader );
	gl.attachShader( program, glFragmentShader );

	// Force a particular attribute to index 0.

	if ( parameters.index0AttributeName !== undefined ) {

		gl.bindAttribLocation( program, 0, parameters.index0AttributeName );

	} else if ( parameters.morphTargets === true ) {

		// programs with morphTargets displace position out of attribute 0
		gl.bindAttribLocation( program, 0, 'position' );

	}

	gl.linkProgram( program );

	// check for link errors
	if ( renderer.debug.checkShaderErrors ) {

		const programLog = gl.getProgramInfoLog( program ).trim();
		const vertexLog = gl.getShaderInfoLog( glVertexShader ).trim();
		const fragmentLog = gl.getShaderInfoLog( glFragmentShader ).trim();

		let runnable = true;
		let haveDiagnostics = true;

		if ( gl.getProgramParameter( program, 35714 ) === false ) {

			runnable = false;

			const vertexErrors = getShaderErrors( gl, glVertexShader, 'vertex' );
			const fragmentErrors = getShaderErrors( gl, glFragmentShader, 'fragment' );

			console.error(
				'THREE.WebGLProgram: Shader Error ' + gl.getError() + ' - ' +
				'VALIDATE_STATUS ' + gl.getProgramParameter( program, 35715 ) + '\n\n' +
				'Program Info Log: ' + programLog + '\n' +
				vertexErrors + '\n' +
				fragmentErrors
			);

		} else if ( programLog !== '' ) {

			console.warn( 'THREE.WebGLProgram: Program Info Log:', programLog );

		} else if ( vertexLog === '' || fragmentLog === '' ) {

			haveDiagnostics = false;

		}

		if ( haveDiagnostics ) {

			this.diagnostics = {

				runnable: runnable,

				programLog: programLog,

				vertexShader: {

					log: vertexLog,
					prefix: prefixVertex

				},

				fragmentShader: {

					log: fragmentLog,
					prefix: prefixFragment

				}

			};

		}

	}

	// Clean up

	// Crashes in iOS9 and iOS10. #18402
	// gl.detachShader( program, glVertexShader );
	// gl.detachShader( program, glFragmentShader );

	gl.deleteShader( glVertexShader );
	gl.deleteShader( glFragmentShader );

	// set up caching for uniform locations

	let cachedUniforms;

	this.getUniforms = function () {

		if ( cachedUniforms === undefined ) {

			cachedUniforms = new WebGLUniforms( gl, program );

		}

		return cachedUniforms;

	};

	// set up caching for attribute locations

	let cachedAttributes;

	this.getAttributes = function () {

		if ( cachedAttributes === undefined ) {

			cachedAttributes = fetchAttributeLocations( gl, program );

		}

		return cachedAttributes;

	};

	// free resource

	this.destroy = function () {

		bindingStates.releaseStatesOfProgram( this );

		gl.deleteProgram( program );
		this.program = undefined;

	};

	//

	this.name = parameters.shaderName;
	this.id = programIdCount ++;
	this.cacheKey = cacheKey;
	this.usedTimes = 1;
	this.program = program;
	this.vertexShader = glVertexShader;
	this.fragmentShader = glFragmentShader;

	return this;

}

let _id = 0;

class WebGLShaderCache {

	constructor() {

		this.shaderCache = new Map();
		this.materialCache = new Map();

	}

	update( material ) {

		const vertexShader = material.vertexShader;
		const fragmentShader = material.fragmentShader;

		const vertexShaderStage = this._getShaderStage( vertexShader );
		const fragmentShaderStage = this._getShaderStage( fragmentShader );

		const materialShaders = this._getShaderCacheForMaterial( material );

		if ( materialShaders.has( vertexShaderStage ) === false ) {

			materialShaders.add( vertexShaderStage );
			vertexShaderStage.usedTimes ++;

		}

		if ( materialShaders.has( fragmentShaderStage ) === false ) {

			materialShaders.add( fragmentShaderStage );
			fragmentShaderStage.usedTimes ++;

		}

		return this;

	}

	remove( material ) {

		const materialShaders = this.materialCache.get( material );

		for ( const shaderStage of materialShaders ) {

			shaderStage.usedTimes --;

			if ( shaderStage.usedTimes === 0 ) this.shaderCache.delete( shaderStage );

		}

		this.materialCache.delete( material );

		return this;

	}

	getVertexShaderID( material ) {

		return this._getShaderStage( material.vertexShader ).id;

	}

	getFragmentShaderID( material ) {

		return this._getShaderStage( material.fragmentShader ).id;

	}

	dispose() {

		this.shaderCache.clear();
		this.materialCache.clear();

	}

	_getShaderCacheForMaterial( material ) {

		const cache = this.materialCache;

		if ( cache.has( material ) === false ) {

			cache.set( material, new Set() );

		}

		return cache.get( material );

	}

	_getShaderStage( code ) {

		const cache = this.shaderCache;

		if ( cache.has( code ) === false ) {

			const stage = new WebGLShaderStage();
			cache.set( code, stage );

		}

		return cache.get( code );

	}

}

class WebGLShaderStage {

	constructor() {

		this.id = _id ++;

		this.usedTimes = 0;

	}

}

function WebGLPrograms( renderer, cubemaps, cubeuvmaps, extensions, capabilities, bindingStates, clipping ) {

	const _programLayers = new Layers();
	const _customShaders = new WebGLShaderCache();
	const programs = [];

	const isWebGL2 = capabilities.isWebGL2;
	const logarithmicDepthBuffer = capabilities.logarithmicDepthBuffer;
	const floatVertexTextures = capabilities.floatVertexTextures;
	const maxVertexUniforms = capabilities.maxVertexUniforms;
	const vertexTextures = capabilities.vertexTextures;
	let precision = capabilities.precision;

	const shaderIDs = {
		MeshDepthMaterial: 'depth',
		MeshDistanceMaterial: 'distanceRGBA',
		MeshNormalMaterial: 'normal',
		MeshBasicMaterial: 'basic',
		MeshLambertMaterial: 'lambert',
		MeshPhongMaterial: 'phong',
		MeshToonMaterial: 'toon',
		MeshStandardMaterial: 'physical',
		MeshPhysicalMaterial: 'physical',
		MeshMatcapMaterial: 'matcap',
		LineBasicMaterial: 'basic',
		LineDashedMaterial: 'dashed',
		PointsMaterial: 'points',
		ShadowMaterial: 'shadow',
		SpriteMaterial: 'sprite'
	};

	function getMaxBones( object ) {

		const skeleton = object.skeleton;
		const bones = skeleton.bones;

		if ( floatVertexTextures ) {

			return 1024;

		} else {

			// default for when object is not specified
			// ( for example when prebuilding shader to be used with multiple objects )
			//
			//  - leave some extra space for other uniforms
			//  - limit here is ANGLE's 254 max uniform vectors
			//    (up to 54 should be safe)

			const nVertexUniforms = maxVertexUniforms;
			const nVertexMatrices = Math.floor( ( nVertexUniforms - 20 ) / 4 );

			const maxBones = Math.min( nVertexMatrices, bones.length );

			if ( maxBones < bones.length ) {

				console.warn( 'THREE.WebGLRenderer: Skeleton has ' + bones.length + ' bones. This GPU supports ' + maxBones + '.' );
				return 0;

			}

			return maxBones;

		}

	}

	function getParameters( material, lights, shadows, scene, object ) {

		const fog = scene.fog;
		const geometry = object.geometry;
		const environment = material.isMeshStandardMaterial ? scene.environment : null;

		const envMap = ( material.isMeshStandardMaterial ? cubeuvmaps : cubemaps ).get( material.envMap || environment );
		const envMapCubeUVHeight = ( !! envMap ) && ( ( envMap.mapping === CubeUVReflectionMapping ) || ( envMap.mapping === CubeUVRefractionMapping ) ) ? envMap.image.height : null;

		const shaderID = shaderIDs[ material.type ];

		// heuristics to create shader parameters according to lights in the scene
		// (not to blow over maxLights budget)

		const maxBones = object.isSkinnedMesh ? getMaxBones( object ) : 0;

		if ( material.precision !== null ) {

			precision = capabilities.getMaxPrecision( material.precision );

			if ( precision !== material.precision ) {

				console.warn( 'THREE.WebGLProgram.getParameters:', material.precision, 'not supported, using', precision, 'instead.' );

			}

		}

		//

		const morphAttribute = geometry.morphAttributes.position || geometry.morphAttributes.normal || geometry.morphAttributes.color;
		const morphTargetsCount = ( morphAttribute !== undefined ) ? morphAttribute.length : 0;

		let morphTextureStride = 0;

		if ( geometry.morphAttributes.position !== undefined ) morphTextureStride = 1;
		if ( geometry.morphAttributes.normal !== undefined ) morphTextureStride = 2;
		if ( geometry.morphAttributes.color !== undefined ) morphTextureStride = 3;

		//

		let vertexShader, fragmentShader;
		let customVertexShaderID, customFragmentShaderID;

		if ( shaderID ) {

			const shader = ShaderLib[ shaderID ];

			vertexShader = shader.vertexShader;
			fragmentShader = shader.fragmentShader;

		} else {

			vertexShader = material.vertexShader;
			fragmentShader = material.fragmentShader;

			_customShaders.update( material );

			customVertexShaderID = _customShaders.getVertexShaderID( material );
			customFragmentShaderID = _customShaders.getFragmentShaderID( material );

		}

		const currentRenderTarget = renderer.getRenderTarget();

		const useAlphaTest = material.alphaTest > 0;
		const useClearcoat = material.clearcoat > 0;

		const parameters = {

			isWebGL2: isWebGL2,

			shaderID: shaderID,
			shaderName: material.type,

			vertexShader: vertexShader,
			fragmentShader: fragmentShader,
			defines: material.defines,

			customVertexShaderID: customVertexShaderID,
			customFragmentShaderID: customFragmentShaderID,

			isRawShaderMaterial: material.isRawShaderMaterial === true,
			glslVersion: material.glslVersion,

			precision: precision,

			instancing: object.isInstancedMesh === true,
			instancingColor: object.isInstancedMesh === true && object.instanceColor !== null,

			supportsVertexTextures: vertexTextures,
			outputEncoding: ( currentRenderTarget === null ) ? renderer.outputEncoding : ( currentRenderTarget.isXRRenderTarget === true ? currentRenderTarget.texture.encoding : LinearEncoding ),
			map: !! material.map,
			matcap: !! material.matcap,
			envMap: !! envMap,
			envMapMode: envMap && envMap.mapping,
			envMapCubeUVHeight: envMapCubeUVHeight,
			lightMap: !! material.lightMap,
			aoMap: !! material.aoMap,
			emissiveMap: !! material.emissiveMap,
			bumpMap: !! material.bumpMap,
			normalMap: !! material.normalMap,
			objectSpaceNormalMap: material.normalMapType === ObjectSpaceNormalMap,
			tangentSpaceNormalMap: material.normalMapType === TangentSpaceNormalMap,

			decodeVideoTexture: !! material.map && ( material.map.isVideoTexture === true ) && ( material.map.encoding === sRGBEncoding ),

			clearcoat: useClearcoat,
			clearcoatMap: useClearcoat && !! material.clearcoatMap,
			clearcoatRoughnessMap: useClearcoat && !! material.clearcoatRoughnessMap,
			clearcoatNormalMap: useClearcoat && !! material.clearcoatNormalMap,

			displacementMap: !! material.displacementMap,
			roughnessMap: !! material.roughnessMap,
			metalnessMap: !! material.metalnessMap,
			specularMap: !! material.specularMap,
			specularIntensityMap: !! material.specularIntensityMap,
			specularColorMap: !! material.specularColorMap,

			opaque: material.transparent === false && material.blending === NormalBlending,

			alphaMap: !! material.alphaMap,
			alphaTest: useAlphaTest,

			gradientMap: !! material.gradientMap,

			sheen: material.sheen > 0,
			sheenColorMap: !! material.sheenColorMap,
			sheenRoughnessMap: !! material.sheenRoughnessMap,

			transmission: material.transmission > 0,
			transmissionMap: !! material.transmissionMap,
			thicknessMap: !! material.thicknessMap,

			combine: material.combine,

			vertexTangents: ( !! material.normalMap && !! geometry.attributes.tangent ),
			vertexColors: material.vertexColors,
			vertexAlphas: material.vertexColors === true && !! geometry.attributes.color && geometry.attributes.color.itemSize === 4,
			vertexUvs: !! material.map || !! material.bumpMap || !! material.normalMap || !! material.specularMap || !! material.alphaMap || !! material.emissiveMap || !! material.roughnessMap || !! material.metalnessMap || !! material.clearcoatMap || !! material.clearcoatRoughnessMap || !! material.clearcoatNormalMap || !! material.displacementMap || !! material.transmissionMap || !! material.thicknessMap || !! material.specularIntensityMap || !! material.specularColorMap || !! material.sheenColorMap || !! material.sheenRoughnessMap,
			uvsVertexOnly: ! ( !! material.map || !! material.bumpMap || !! material.normalMap || !! material.specularMap || !! material.alphaMap || !! material.emissiveMap || !! material.roughnessMap || !! material.metalnessMap || !! material.clearcoatNormalMap || material.transmission > 0 || !! material.transmissionMap || !! material.thicknessMap || !! material.specularIntensityMap || !! material.specularColorMap || material.sheen > 0 || !! material.sheenColorMap || !! material.sheenRoughnessMap ) && !! material.displacementMap,

			fog: !! fog,
			useFog: material.fog,
			fogExp2: ( fog && fog.isFogExp2 ),

			flatShading: !! material.flatShading,

			sizeAttenuation: material.sizeAttenuation,
			logarithmicDepthBuffer: logarithmicDepthBuffer,

			skinning: object.isSkinnedMesh === true && maxBones > 0,
			maxBones: maxBones,
			useVertexTexture: floatVertexTextures,

			morphTargets: geometry.morphAttributes.position !== undefined,
			morphNormals: geometry.morphAttributes.normal !== undefined,
			morphColors: geometry.morphAttributes.color !== undefined,
			morphTargetsCount: morphTargetsCount,
			morphTextureStride: morphTextureStride,

			numDirLights: lights.directional.length,
			numPointLights: lights.point.length,
			numSpotLights: lights.spot.length,
			numRectAreaLights: lights.rectArea.length,
			numHemiLights: lights.hemi.length,

			numDirLightShadows: lights.directionalShadowMap.length,
			numPointLightShadows: lights.pointShadowMap.length,
			numSpotLightShadows: lights.spotShadowMap.length,

			numClippingPlanes: clipping.numPlanes,
			numClipIntersection: clipping.numIntersection,

			dithering: material.dithering,

			shadowMapEnabled: renderer.shadowMap.enabled && shadows.length > 0,
			shadowMapType: renderer.shadowMap.type,

			toneMapping: material.toneMapped ? renderer.toneMapping : NoToneMapping,
			physicallyCorrectLights: renderer.physicallyCorrectLights,

			premultipliedAlpha: material.premultipliedAlpha,

			doubleSided: material.side === DoubleSide,
			flipSided: material.side === BackSide,

			depthPacking: ( material.depthPacking !== undefined ) ? material.depthPacking : false,

			index0AttributeName: material.index0AttributeName,

			extensionDerivatives: material.extensions && material.extensions.derivatives,
			extensionFragDepth: material.extensions && material.extensions.fragDepth,
			extensionDrawBuffers: material.extensions && material.extensions.drawBuffers,
			extensionShaderTextureLOD: material.extensions && material.extensions.shaderTextureLOD,

			rendererExtensionFragDepth: isWebGL2 || extensions.has( 'EXT_frag_depth' ),
			rendererExtensionDrawBuffers: isWebGL2 || extensions.has( 'WEBGL_draw_buffers' ),
			rendererExtensionShaderTextureLod: isWebGL2 || extensions.has( 'EXT_shader_texture_lod' ),

			customProgramCacheKey: material.customProgramCacheKey()

		};

		return parameters;

	}

	function getProgramCacheKey( parameters ) {

		const array = [];

		if ( parameters.shaderID ) {

			array.push( parameters.shaderID );

		} else {

			array.push( parameters.customVertexShaderID );
			array.push( parameters.customFragmentShaderID );

		}

		if ( parameters.defines !== undefined ) {

			for ( const name in parameters.defines ) {

				array.push( name );
				array.push( parameters.defines[ name ] );

			}

		}

		if ( parameters.isRawShaderMaterial === false ) {

			getProgramCacheKeyParameters( array, parameters );
			getProgramCacheKeyBooleans( array, parameters );
			array.push( renderer.outputEncoding );

		}

		array.push( parameters.customProgramCacheKey );

		return array.join();

	}

	function getProgramCacheKeyParameters( array, parameters ) {

		array.push( parameters.precision );
		array.push( parameters.outputEncoding );
		array.push( parameters.envMapMode );
		array.push( parameters.envMapCubeUVHeight );
		array.push( parameters.combine );
		array.push( parameters.vertexUvs );
		array.push( parameters.fogExp2 );
		array.push( parameters.sizeAttenuation );
		array.push( parameters.maxBones );
		array.push( parameters.morphTargetsCount );
		array.push( parameters.morphAttributeCount );
		array.push( parameters.numDirLights );
		array.push( parameters.numPointLights );
		array.push( parameters.numSpotLights );
		array.push( parameters.numHemiLights );
		array.push( parameters.numRectAreaLights );
		array.push( parameters.numDirLightShadows );
		array.push( parameters.numPointLightShadows );
		array.push( parameters.numSpotLightShadows );
		array.push( parameters.shadowMapType );
		array.push( parameters.toneMapping );
		array.push( parameters.numClippingPlanes );
		array.push( parameters.numClipIntersection );

	}

	function getProgramCacheKeyBooleans( array, parameters ) {

		_programLayers.disableAll();

		if ( parameters.isWebGL2 )
			_programLayers.enable( 0 );
		if ( parameters.supportsVertexTextures )
			_programLayers.enable( 1 );
		if ( parameters.instancing )
			_programLayers.enable( 2 );
		if ( parameters.instancingColor )
			_programLayers.enable( 3 );
		if ( parameters.map )
			_programLayers.enable( 4 );
		if ( parameters.matcap )
			_programLayers.enable( 5 );
		if ( parameters.envMap )
			_programLayers.enable( 6 );
		if ( parameters.lightMap )
			_programLayers.enable( 7 );
		if ( parameters.aoMap )
			_programLayers.enable( 8 );
		if ( parameters.emissiveMap )
			_programLayers.enable( 9 );
		if ( parameters.bumpMap )
			_programLayers.enable( 10 );
		if ( parameters.normalMap )
			_programLayers.enable( 11 );
		if ( parameters.objectSpaceNormalMap )
			_programLayers.enable( 12 );
		if ( parameters.tangentSpaceNormalMap )
			_programLayers.enable( 13 );
		if ( parameters.clearcoat )
			_programLayers.enable( 14 );
		if ( parameters.clearcoatMap )
			_programLayers.enable( 15 );
		if ( parameters.clearcoatRoughnessMap )
			_programLayers.enable( 16 );
		if ( parameters.clearcoatNormalMap )
			_programLayers.enable( 17 );
		if ( parameters.displacementMap )
			_programLayers.enable( 18 );
		if ( parameters.specularMap )
			_programLayers.enable( 19 );
		if ( parameters.roughnessMap )
			_programLayers.enable( 20 );
		if ( parameters.metalnessMap )
			_programLayers.enable( 21 );
		if ( parameters.gradientMap )
			_programLayers.enable( 22 );
		if ( parameters.alphaMap )
			_programLayers.enable( 23 );
		if ( parameters.alphaTest )
			_programLayers.enable( 24 );
		if ( parameters.vertexColors )
			_programLayers.enable( 25 );
		if ( parameters.vertexAlphas )
			_programLayers.enable( 26 );
		if ( parameters.vertexUvs )
			_programLayers.enable( 27 );
		if ( parameters.vertexTangents )
			_programLayers.enable( 28 );
		if ( parameters.uvsVertexOnly )
			_programLayers.enable( 29 );
		if ( parameters.fog )
			_programLayers.enable( 30 );

		array.push( _programLayers.mask );
		_programLayers.disableAll();

		if ( parameters.useFog )
			_programLayers.enable( 0 );
		if ( parameters.flatShading )
			_programLayers.enable( 1 );
		if ( parameters.logarithmicDepthBuffer )
			_programLayers.enable( 2 );
		if ( parameters.skinning )
			_programLayers.enable( 3 );
		if ( parameters.useVertexTexture )
			_programLayers.enable( 4 );
		if ( parameters.morphTargets )
			_programLayers.enable( 5 );
		if ( parameters.morphNormals )
			_programLayers.enable( 6 );
		if ( parameters.morphColors )
			_programLayers.enable( 7 );
		if ( parameters.premultipliedAlpha )
			_programLayers.enable( 8 );
		if ( parameters.shadowMapEnabled )
			_programLayers.enable( 9 );
		if ( parameters.physicallyCorrectLights )
			_programLayers.enable( 10 );
		if ( parameters.doubleSided )
			_programLayers.enable( 11 );
		if ( parameters.flipSided )
			_programLayers.enable( 12 );
		if ( parameters.depthPacking )
			_programLayers.enable( 13 );
		if ( parameters.dithering )
			_programLayers.enable( 14 );
		if ( parameters.specularIntensityMap )
			_programLayers.enable( 15 );
		if ( parameters.specularColorMap )
			_programLayers.enable( 16 );
		if ( parameters.transmission )
			_programLayers.enable( 17 );
		if ( parameters.transmissionMap )
			_programLayers.enable( 18 );
		if ( parameters.thicknessMap )
			_programLayers.enable( 19 );
		if ( parameters.sheen )
			_programLayers.enable( 20 );
		if ( parameters.sheenColorMap )
			_programLayers.enable( 21 );
		if ( parameters.sheenRoughnessMap )
			_programLayers.enable( 22 );
		if ( parameters.decodeVideoTexture )
			_programLayers.enable( 23 );
		if ( parameters.opaque )
			_programLayers.enable( 24 );

		array.push( _programLayers.mask );

	}

	function getUniforms( material ) {

		const shaderID = shaderIDs[ material.type ];
		let uniforms;

		if ( shaderID ) {

			const shader = ShaderLib[ shaderID ];
			uniforms = UniformsUtils.clone( shader.uniforms );

		} else {

			uniforms = material.uniforms;

		}

		return uniforms;

	}

	function acquireProgram( parameters, cacheKey ) {

		let program;

		// Check if code has been already compiled
		for ( let p = 0, pl = programs.length; p < pl; p ++ ) {

			const preexistingProgram = programs[ p ];

			if ( preexistingProgram.cacheKey === cacheKey ) {

				program = preexistingProgram;
				++ program.usedTimes;

				break;

			}

		}

		if ( program === undefined ) {

			program = new WebGLProgram( renderer, cacheKey, parameters, bindingStates );
			programs.push( program );

		}

		return program;

	}

	function releaseProgram( program ) {

		if ( -- program.usedTimes === 0 ) {

			// Remove from unordered set
			const i = programs.indexOf( program );
			programs[ i ] = programs[ programs.length - 1 ];
			programs.pop();

			// Free WebGL resources
			program.destroy();

		}

	}

	function releaseShaderCache( material ) {

		_customShaders.remove( material );

	}

	function dispose() {

		_customShaders.dispose();

	}

	return {
		getParameters: getParameters,
		getProgramCacheKey: getProgramCacheKey,
		getUniforms: getUniforms,
		acquireProgram: acquireProgram,
		releaseProgram: releaseProgram,
		releaseShaderCache: releaseShaderCache,
		// Exposed for resource monitoring & error feedback via renderer.info:
		programs: programs,
		dispose: dispose
	};

}

function WebGLProperties() {

	let properties = new WeakMap();

	function get( object ) {

		let map = properties.get( object );

		if ( map === undefined ) {

			map = {};
			properties.set( object, map );

		}

		return map;

	}

	function remove( object ) {

		properties.delete( object );

	}

	function update( object, key, value ) {

		properties.get( object )[ key ] = value;

	}

	function dispose() {

		properties = new WeakMap();

	}

	return {
		get: get,
		remove: remove,
		update: update,
		dispose: dispose
	};

}

function painterSortStable( a, b ) {

	if ( a.groupOrder !== b.groupOrder ) {

		return a.groupOrder - b.groupOrder;

	} else if ( a.renderOrder !== b.renderOrder ) {

		return a.renderOrder - b.renderOrder;

	} else if ( a.material.id !== b.material.id ) {

		return a.material.id - b.material.id;

	} else if ( a.z !== b.z ) {

		return a.z - b.z;

	} else {

		return a.id - b.id;

	}

}

function reversePainterSortStable( a, b ) {

	if ( a.groupOrder !== b.groupOrder ) {

		return a.groupOrder - b.groupOrder;

	} else if ( a.renderOrder !== b.renderOrder ) {

		return a.renderOrder - b.renderOrder;

	} else if ( a.z !== b.z ) {

		return b.z - a.z;

	} else {

		return a.id - b.id;

	}

}


function WebGLRenderList() {

	const renderItems = [];
	let renderItemsIndex = 0;

	const opaque = [];
	const transmissive = [];
	const transparent = [];

	function init() {

		renderItemsIndex = 0;

		opaque.length = 0;
		transmissive.length = 0;
		transparent.length = 0;

	}

	function getNextRenderItem( object, geometry, material, groupOrder, z, group ) {

		let renderItem = renderItems[ renderItemsIndex ];

		if ( renderItem === undefined ) {

			renderItem = {
				id: object.id,
				object: object,
				geometry: geometry,
				material: material,
				groupOrder: groupOrder,
				renderOrder: object.renderOrder,
				z: z,
				group: group
			};

			renderItems[ renderItemsIndex ] = renderItem;

		} else {

			renderItem.id = object.id;
			renderItem.object = object;
			renderItem.geometry = geometry;
			renderItem.material = material;
			renderItem.groupOrder = groupOrder;
			renderItem.renderOrder = object.renderOrder;
			renderItem.z = z;
			renderItem.group = group;

		}

		renderItemsIndex ++;

		return renderItem;

	}

	function push( object, geometry, material, groupOrder, z, group ) {

		const renderItem = getNextRenderItem( object, geometry, material, groupOrder, z, group );

		if ( material.transmission > 0.0 ) {

			transmissive.push( renderItem );

		} else if ( material.transparent === true ) {

			transparent.push( renderItem );

		} else {

			opaque.push( renderItem );

		}

	}

	function unshift( object, geometry, material, groupOrder, z, group ) {

		const renderItem = getNextRenderItem( object, geometry, material, groupOrder, z, group );

		if ( material.transmission > 0.0 ) {

			transmissive.unshift( renderItem );

		} else if ( material.transparent === true ) {

			transparent.unshift( renderItem );

		} else {

			opaque.unshift( renderItem );

		}

	}

	function sort( customOpaqueSort, customTransparentSort ) {

		if ( opaque.length > 1 ) opaque.sort( customOpaqueSort || painterSortStable );
		if ( transmissive.length > 1 ) transmissive.sort( customTransparentSort || reversePainterSortStable );
		if ( transparent.length > 1 ) transparent.sort( customTransparentSort || reversePainterSortStable );

	}

	function finish() {

		// Clear references from inactive renderItems in the list

		for ( let i = renderItemsIndex, il = renderItems.length; i < il; i ++ ) {

			const renderItem = renderItems[ i ];

			if ( renderItem.id === null ) break;

			renderItem.id = null;
			renderItem.object = null;
			renderItem.geometry = null;
			renderItem.material = null;
			renderItem.group = null;

		}

	}

	return {

		opaque: opaque,
		transmissive: transmissive,
		transparent: transparent,

		init: init,
		push: push,
		unshift: unshift,
		finish: finish,

		sort: sort
	};

}

function WebGLRenderLists() {

	let lists = new WeakMap();

	function get( scene, renderCallDepth ) {

		let list;

		if ( lists.has( scene ) === false ) {

			list = new WebGLRenderList();
			lists.set( scene, [ list ] );

		} else {

			if ( renderCallDepth >= lists.get( scene ).length ) {

				list = new WebGLRenderList();
				lists.get( scene ).push( list );

			} else {

				list = lists.get( scene )[ renderCallDepth ];

			}

		}

		return list;

	}

	function dispose() {

		lists = new WeakMap();

	}

	return {
		get: get,
		dispose: dispose
	};

}

function UniformsCache() {

	const lights = {};

	return {

		get: function ( light ) {

			if ( lights[ light.id ] !== undefined ) {

				return lights[ light.id ];

			}

			let uniforms;

			switch ( light.type ) {

				case 'DirectionalLight':
					uniforms = {
						direction: new Vector3(),
						color: new Color()
					};
					break;

				case 'SpotLight':
					uniforms = {
						position: new Vector3(),
						direction: new Vector3(),
						color: new Color(),
						distance: 0,
						coneCos: 0,
						penumbraCos: 0,
						decay: 0
					};
					break;

				case 'PointLight':
					uniforms = {
						position: new Vector3(),
						color: new Color(),
						distance: 0,
						decay: 0
					};
					break;

				case 'HemisphereLight':
					uniforms = {
						direction: new Vector3(),
						skyColor: new Color(),
						groundColor: new Color()
					};
					break;

				case 'RectAreaLight':
					uniforms = {
						color: new Color(),
						position: new Vector3(),
						halfWidth: new Vector3(),
						halfHeight: new Vector3()
					};
					break;

			}

			lights[ light.id ] = uniforms;

			return uniforms;

		}

	};

}

function ShadowUniformsCache() {

	const lights = {};

	return {

		get: function ( light ) {

			if ( lights[ light.id ] !== undefined ) {

				return lights[ light.id ];

			}

			let uniforms;

			switch ( light.type ) {

				case 'DirectionalLight':
					uniforms = {
						shadowBias: 0,
						shadowNormalBias: 0,
						shadowRadius: 1,
						shadowMapSize: new Vector2()
					};
					break;

				case 'SpotLight':
					uniforms = {
						shadowBias: 0,
						shadowNormalBias: 0,
						shadowRadius: 1,
						shadowMapSize: new Vector2()
					};
					break;

				case 'PointLight':
					uniforms = {
						shadowBias: 0,
						shadowNormalBias: 0,
						shadowRadius: 1,
						shadowMapSize: new Vector2(),
						shadowCameraNear: 1,
						shadowCameraFar: 1000
					};
					break;

				// TODO (abelnation): set RectAreaLight shadow uniforms

			}

			lights[ light.id ] = uniforms;

			return uniforms;

		}

	};

}



let nextVersion = 0;

function shadowCastingLightsFirst( lightA, lightB ) {

	return ( lightB.castShadow ? 1 : 0 ) - ( lightA.castShadow ? 1 : 0 );

}

function WebGLLights( extensions, capabilities ) {

	const cache = new UniformsCache();

	const shadowCache = ShadowUniformsCache();

	const state = {

		version: 0,

		hash: {
			directionalLength: - 1,
			pointLength: - 1,
			spotLength: - 1,
			rectAreaLength: - 1,
			hemiLength: - 1,

			numDirectionalShadows: - 1,
			numPointShadows: - 1,
			numSpotShadows: - 1
		},

		ambient: [ 0, 0, 0 ],
		probe: [],
		directional: [],
		directionalShadow: [],
		directionalShadowMap: [],
		directionalShadowMatrix: [],
		spot: [],
		spotShadow: [],
		spotShadowMap: [],
		spotShadowMatrix: [],
		rectArea: [],
		rectAreaLTC1: null,
		rectAreaLTC2: null,
		point: [],
		pointShadow: [],
		pointShadowMap: [],
		pointShadowMatrix: [],
		hemi: []

	};

	for ( let i = 0; i < 9; i ++ ) state.probe.push( new Vector3() );

	const vector3 = new Vector3();
	const matrix4 = new Matrix4();
	const matrix42 = new Matrix4();

	function setup( lights, physicallyCorrectLights ) {

		let r = 0, g = 0, b = 0;

		for ( let i = 0; i < 9; i ++ ) state.probe[ i ].set( 0, 0, 0 );

		let directionalLength = 0;
		let pointLength = 0;
		let spotLength = 0;
		let rectAreaLength = 0;
		let hemiLength = 0;

		let numDirectionalShadows = 0;
		let numPointShadows = 0;
		let numSpotShadows = 0;

		lights.sort( shadowCastingLightsFirst );

		// artist-friendly light intensity scaling factor
		const scaleFactor = ( physicallyCorrectLights !== true ) ? Math.PI : 1;

		for ( let i = 0, l = lights.length; i < l; i ++ ) {

			const light = lights[ i ];

			const color = light.color;
			const intensity = light.intensity;
			const distance = light.distance;

			const shadowMap = ( light.shadow && light.shadow.map ) ? light.shadow.map.texture : null;

			if ( light.isAmbientLight ) {

				r += color.r * intensity * scaleFactor;
				g += color.g * intensity * scaleFactor;
				b += color.b * intensity * scaleFactor;

			} else if ( light.isLightProbe ) {

				for ( let j = 0; j < 9; j ++ ) {

					state.probe[ j ].addScaledVector( light.sh.coefficients[ j ], intensity );

				}

			} else if ( light.isDirectionalLight ) {

				const uniforms = cache.get( light );

				uniforms.color.copy( light.color ).multiplyScalar( light.intensity * scaleFactor );

				if ( light.castShadow ) {

					const shadow = light.shadow;

					const shadowUniforms = shadowCache.get( light );

					shadowUniforms.shadowBias = shadow.bias;
					shadowUniforms.shadowNormalBias = shadow.normalBias;
					shadowUniforms.shadowRadius = shadow.radius;
					shadowUniforms.shadowMapSize = shadow.mapSize;

					state.directionalShadow[ directionalLength ] = shadowUniforms;
					state.directionalShadowMap[ directionalLength ] = shadowMap;
					state.directionalShadowMatrix[ directionalLength ] = light.shadow.matrix;

					numDirectionalShadows ++;

				}

				state.directional[ directionalLength ] = uniforms;

				directionalLength ++;

			} else if ( light.isSpotLight ) {

				const uniforms = cache.get( light );

				uniforms.position.setFromMatrixPosition( light.matrixWorld );

				uniforms.color.copy( color ).multiplyScalar( intensity * scaleFactor );
				uniforms.distance = distance;

				uniforms.coneCos = Math.cos( light.angle );
				uniforms.penumbraCos = Math.cos( light.angle * ( 1 - light.penumbra ) );
				uniforms.decay = light.decay;

				if ( light.castShadow ) {

					const shadow = light.shadow;

					const shadowUniforms = shadowCache.get( light );

					shadowUniforms.shadowBias = shadow.bias;
					shadowUniforms.shadowNormalBias = shadow.normalBias;
					shadowUniforms.shadowRadius = shadow.radius;
					shadowUniforms.shadowMapSize = shadow.mapSize;

					state.spotShadow[ spotLength ] = shadowUniforms;
					state.spotShadowMap[ spotLength ] = shadowMap;
					state.spotShadowMatrix[ spotLength ] = light.shadow.matrix;

					numSpotShadows ++;

				}

				state.spot[ spotLength ] = uniforms;

				spotLength ++;

			} else if ( light.isRectAreaLight ) {

				const uniforms = cache.get( light );

				// (a) intensity is the total visible light emitted
				//uniforms.color.copy( color ).multiplyScalar( intensity / ( light.width * light.height * Math.PI ) );

				// (b) intensity is the brightness of the light
				uniforms.color.copy( color ).multiplyScalar( intensity );

				uniforms.halfWidth.set( light.width * 0.5, 0.0, 0.0 );
				uniforms.halfHeight.set( 0.0, light.height * 0.5, 0.0 );

				state.rectArea[ rectAreaLength ] = uniforms;

				rectAreaLength ++;

			} else if ( light.isPointLight ) {

				const uniforms = cache.get( light );

				uniforms.color.copy( light.color ).multiplyScalar( light.intensity * scaleFactor );
				uniforms.distance = light.distance;
				uniforms.decay = light.decay;

				if ( light.castShadow ) {

					const shadow = light.shadow;

					const shadowUniforms = shadowCache.get( light );

					shadowUniforms.shadowBias = shadow.bias;
					shadowUniforms.shadowNormalBias = shadow.normalBias;
					shadowUniforms.shadowRadius = shadow.radius;
					shadowUniforms.shadowMapSize = shadow.mapSize;
					shadowUniforms.shadowCameraNear = shadow.camera.near;
					shadowUniforms.shadowCameraFar = shadow.camera.far;

					state.pointShadow[ pointLength ] = shadowUniforms;
					state.pointShadowMap[ pointLength ] = shadowMap;
					state.pointShadowMatrix[ pointLength ] = light.shadow.matrix;

					numPointShadows ++;

				}

				state.point[ pointLength ] = uniforms;

				pointLength ++;

			} else if ( light.isHemisphereLight ) {

				const uniforms = cache.get( light );

				uniforms.skyColor.copy( light.color ).multiplyScalar( intensity * scaleFactor );
				uniforms.groundColor.copy( light.groundColor ).multiplyScalar( intensity * scaleFactor );

				state.hemi[ hemiLength ] = uniforms;

				hemiLength ++;

			}

		}

		if ( rectAreaLength > 0 ) {

			if ( capabilities.isWebGL2 ) {

				// WebGL 2

				state.rectAreaLTC1 = UniformsLib.LTC_FLOAT_1;
				state.rectAreaLTC2 = UniformsLib.LTC_FLOAT_2;

			} else {

				// WebGL 1

				if ( extensions.has( 'OES_texture_float_linear' ) === true ) {

					state.rectAreaLTC1 = UniformsLib.LTC_FLOAT_1;
					state.rectAreaLTC2 = UniformsLib.LTC_FLOAT_2;

				} else if ( extensions.has( 'OES_texture_half_float_linear' ) === true ) {

					state.rectAreaLTC1 = UniformsLib.LTC_HALF_1;
					state.rectAreaLTC2 = UniformsLib.LTC_HALF_2;

				} else {

					console.error( 'THREE.WebGLRenderer: Unable to use RectAreaLight. Missing WebGL extensions.' );

				}

			}

		}

		state.ambient[ 0 ] = r;
		state.ambient[ 1 ] = g;
		state.ambient[ 2 ] = b;

		const hash = state.hash;

		if ( hash.directionalLength !== directionalLength ||
			hash.pointLength !== pointLength ||
			hash.spotLength !== spotLength ||
			hash.rectAreaLength !== rectAreaLength ||
			hash.hemiLength !== hemiLength ||
			hash.numDirectionalShadows !== numDirectionalShadows ||
			hash.numPointShadows !== numPointShadows ||
			hash.numSpotShadows !== numSpotShadows ) {

			state.directional.length = directionalLength;
			state.spot.length = spotLength;
			state.rectArea.length = rectAreaLength;
			state.point.length = pointLength;
			state.hemi.length = hemiLength;

			state.directionalShadow.length = numDirectionalShadows;
			state.directionalShadowMap.length = numDirectionalShadows;
			state.pointShadow.length = numPointShadows;
			state.pointShadowMap.length = numPointShadows;
			state.spotShadow.length = numSpotShadows;
			state.spotShadowMap.length = numSpotShadows;
			state.directionalShadowMatrix.length = numDirectionalShadows;
			state.pointShadowMatrix.length = numPointShadows;
			state.spotShadowMatrix.length = numSpotShadows;

			hash.directionalLength = directionalLength;
			hash.pointLength = pointLength;
			hash.spotLength = spotLength;
			hash.rectAreaLength = rectAreaLength;
			hash.hemiLength = hemiLength;

			hash.numDirectionalShadows = numDirectionalShadows;
			hash.numPointShadows = numPointShadows;
			hash.numSpotShadows = numSpotShadows;

			state.version = nextVersion ++;

		}

	}

	function setupView( lights, camera ) {

		let directionalLength = 0;
		let pointLength = 0;
		let spotLength = 0;
		let rectAreaLength = 0;
		let hemiLength = 0;

		const viewMatrix = camera.matrixWorldInverse;

		for ( let i = 0, l = lights.length; i < l; i ++ ) {

			const light = lights[ i ];

			if ( light.isDirectionalLight ) {

				const uniforms = state.directional[ directionalLength ];

				uniforms.direction.setFromMatrixPosition( light.matrixWorld );
				vector3.setFromMatrixPosition( light.target.matrixWorld );
				uniforms.direction.sub( vector3 );
				uniforms.direction.transformDirection( viewMatrix );

				directionalLength ++;

			} else if ( light.isSpotLight ) {

				const uniforms = state.spot[ spotLength ];

				uniforms.position.setFromMatrixPosition( light.matrixWorld );
				uniforms.position.applyMatrix4( viewMatrix );

				uniforms.direction.setFromMatrixPosition( light.matrixWorld );
				vector3.setFromMatrixPosition( light.target.matrixWorld );
				uniforms.direction.sub( vector3 );
				uniforms.direction.transformDirection( viewMatrix );

				spotLength ++;

			} else if ( light.isRectAreaLight ) {

				const uniforms = state.rectArea[ rectAreaLength ];

				uniforms.position.setFromMatrixPosition( light.matrixWorld );
				uniforms.position.applyMatrix4( viewMatrix );

				// extract local rotation of light to derive width/height half vectors
				matrix42.identity();
				matrix4.copy( light.matrixWorld );
				matrix4.premultiply( viewMatrix );
				matrix42.extractRotation( matrix4 );

				uniforms.halfWidth.set( light.width * 0.5, 0.0, 0.0 );
				uniforms.halfHeight.set( 0.0, light.height * 0.5, 0.0 );

				uniforms.halfWidth.applyMatrix4( matrix42 );
				uniforms.halfHeight.applyMatrix4( matrix42 );

				rectAreaLength ++;

			} else if ( light.isPointLight ) {

				const uniforms = state.point[ pointLength ];

				uniforms.position.setFromMatrixPosition( light.matrixWorld );
				uniforms.position.applyMatrix4( viewMatrix );

				pointLength ++;

			} else if ( light.isHemisphereLight ) {

				const uniforms = state.hemi[ hemiLength ];

				uniforms.direction.setFromMatrixPosition( light.matrixWorld );
				uniforms.direction.transformDirection( viewMatrix );
				uniforms.direction.normalize();

				hemiLength ++;

			}

		}

	}

	return {
		setup: setup,
		setupView: setupView,
		state: state
	};

}

function WebGLRenderState( extensions, capabilities ) {

	const lights = new WebGLLights( extensions, capabilities );

	const lightsArray = [];
	const shadowsArray = [];

	function init() {

		lightsArray.length = 0;
		shadowsArray.length = 0;

	}

	function pushLight( light ) {

		lightsArray.push( light );

	}

	function pushShadow( shadowLight ) {

		shadowsArray.push( shadowLight );

	}

	function setupLights( physicallyCorrectLights ) {

		lights.setup( lightsArray, physicallyCorrectLights );

	}

	function setupLightsView( camera ) {

		lights.setupView( lightsArray, camera );

	}

	const state = {
		lightsArray: lightsArray,
		shadowsArray: shadowsArray,

		lights: lights
	};

	return {
		init: init,
		state: state,
		setupLights: setupLights,
		setupLightsView: setupLightsView,

		pushLight: pushLight,
		pushShadow: pushShadow
	};

}

function WebGLRenderStates( extensions, capabilities ) {

	let renderStates = new WeakMap();

	function get( scene, renderCallDepth = 0 ) {

		let renderState;

		if ( renderStates.has( scene ) === false ) {

			renderState = new WebGLRenderState( extensions, capabilities );
			renderStates.set( scene, [ renderState ] );

		} else {

			if ( renderCallDepth >= renderStates.get( scene ).length ) {

				renderState = new WebGLRenderState( extensions, capabilities );
				renderStates.get( scene ).push( renderState );

			} else {

				renderState = renderStates.get( scene )[ renderCallDepth ];

			}

		}

		return renderState;

	}

	function dispose() {

		renderStates = new WeakMap();

	}

	return {
		get: get,
		dispose: dispose
	};

}

/**
 * parameters = {
 *
 *  opacity: <float>,
 *
 *  map: new THREE.Texture( <Image> ),
 *
 *  alphaMap: new THREE.Texture( <Image> ),
 *
 *  displacementMap: new THREE.Texture( <Image> ),
 *  displacementScale: <float>,
 *  displacementBias: <float>,
 *
 *  wireframe: <boolean>,
 *  wireframeLinewidth: <float>
 * }
 */

class MeshDepthMaterial extends Material {

	constructor( parameters ) {

		super();

		this.type = 'MeshDepthMaterial';

		this.depthPacking = BasicDepthPacking;

		this.map = null;

		this.alphaMap = null;

		this.displacementMap = null;
		this.displacementScale = 1;
		this.displacementBias = 0;

		this.wireframe = false;
		this.wireframeLinewidth = 1;

		this.fog = false;

		this.setValues( parameters );

	}

	copy( source ) {

		super.copy( source );

		this.depthPacking = source.depthPacking;

		this.map = source.map;

		this.alphaMap = source.alphaMap;

		this.displacementMap = source.displacementMap;
		this.displacementScale = source.displacementScale;
		this.displacementBias = source.displacementBias;

		this.wireframe = source.wireframe;
		this.wireframeLinewidth = source.wireframeLinewidth;

		return this;

	}

}

MeshDepthMaterial.prototype.isMeshDepthMaterial = true;

/**
 * parameters = {
 *
 *  referencePosition: <float>,
 *  nearDistance: <float>,
 *  farDistance: <float>,
 *
 *  map: new THREE.Texture( <Image> ),
 *
 *  alphaMap: new THREE.Texture( <Image> ),
 *
 *  displacementMap: new THREE.Texture( <Image> ),
 *  displacementScale: <float>,
 *  displacementBias: <float>
 *
 * }
 */

class MeshDistanceMaterial extends Material {

	constructor( parameters ) {

		super();

		this.type = 'MeshDistanceMaterial';

		this.referencePosition = new Vector3();
		this.nearDistance = 1;
		this.farDistance = 1000;

		this.map = null;

		this.alphaMap = null;

		this.displacementMap = null;
		this.displacementScale = 1;
		this.displacementBias = 0;

		this.fog = false;

		this.setValues( parameters );

	}

	copy( source ) {

		super.copy( source );

		this.referencePosition.copy( source.referencePosition );
		this.nearDistance = source.nearDistance;
		this.farDistance = source.farDistance;

		this.map = source.map;

		this.alphaMap = source.alphaMap;

		this.displacementMap = source.displacementMap;
		this.displacementScale = source.displacementScale;
		this.displacementBias = source.displacementBias;

		return this;

	}

}

MeshDistanceMaterial.prototype.isMeshDistanceMaterial = true;

const vertex = "void main() {\n\tgl_Position = vec4( position, 1.0 );\n}";

const fragment = "uniform sampler2D shadow_pass;\nuniform vec2 resolution;\nuniform float radius;\n#include <packing>\nvoid main() {\n\tconst float samples = float( VSM_SAMPLES );\n\tfloat mean = 0.0;\n\tfloat squared_mean = 0.0;\n\tfloat uvStride = samples <= 1.0 ? 0.0 : 2.0 / ( samples - 1.0 );\n\tfloat uvStart = samples <= 1.0 ? 0.0 : - 1.0;\n\tfor ( float i = 0.0; i < samples; i ++ ) {\n\t\tfloat uvOffset = uvStart + i * uvStride;\n\t\t#ifdef HORIZONTAL_PASS\n\t\t\tvec2 distribution = unpackRGBATo2Half( texture2D( shadow_pass, ( gl_FragCoord.xy + vec2( uvOffset, 0.0 ) * radius ) / resolution ) );\n\t\t\tmean += distribution.x;\n\t\t\tsquared_mean += distribution.y * distribution.y + distribution.x * distribution.x;\n\t\t#else\n\t\t\tfloat depth = unpackRGBAToDepth( texture2D( shadow_pass, ( gl_FragCoord.xy + vec2( 0.0, uvOffset ) * radius ) / resolution ) );\n\t\t\tmean += depth;\n\t\t\tsquared_mean += depth * depth;\n\t\t#endif\n\t}\n\tmean = mean / samples;\n\tsquared_mean = squared_mean / samples;\n\tfloat std_dev = sqrt( squared_mean - mean * mean );\n\tgl_FragColor = pack2HalfToRGBA( vec2( mean, std_dev ) );\n}";

function WebGLShadowMap( _renderer, _objects, _capabilities ) {

	let _frustum = new Frustum();

	const _shadowMapSize = new Vector2(),
		_viewportSize = new Vector2(),

		_viewport = new Vector4$1(),

		_depthMaterial = new MeshDepthMaterial( { depthPacking: RGBADepthPacking } ),
		_distanceMaterial = new MeshDistanceMaterial(),

		_materialCache = {},

		_maxTextureSize = _capabilities.maxTextureSize;

	const shadowSide = { 0: BackSide, 1: FrontSide, 2: DoubleSide };

	const shadowMaterialVertical = new ShaderMaterial( {
		defines: {
			VSM_SAMPLES: 8
		},
		uniforms: {
			shadow_pass: { value: null },
			resolution: { value: new Vector2() },
			radius: { value: 4.0 }
		},

		vertexShader: vertex,
		fragmentShader: fragment

	} );

	const shadowMaterialHorizontal = shadowMaterialVertical.clone();
	shadowMaterialHorizontal.defines.HORIZONTAL_PASS = 1;

	const fullScreenTri = new BufferGeometry();
	fullScreenTri.setAttribute(
		'position',
		new BufferAttribute(
			new Float32Array( [ - 1, - 1, 0.5, 3, - 1, 0.5, - 1, 3, 0.5 ] ),
			3
		)
	);

	const fullScreenMesh = new Mesh( fullScreenTri, shadowMaterialVertical );

	const scope = this;

	this.enabled = false;

	this.autoUpdate = true;
	this.needsUpdate = false;

	this.type = PCFShadowMap;

	this.render = function ( lights, scene, camera ) {

		if ( scope.enabled === false ) return;
		if ( scope.autoUpdate === false && scope.needsUpdate === false ) return;

		if ( lights.length === 0 ) return;

		const currentRenderTarget = _renderer.getRenderTarget();
		const activeCubeFace = _renderer.getActiveCubeFace();
		const activeMipmapLevel = _renderer.getActiveMipmapLevel();

		const _state = _renderer.state;

		// Set GL state for depth map.
		_state.setBlending( NoBlending );
		_state.buffers.color.setClear( 1, 1, 1, 1 );
		_state.buffers.depth.setTest( true );
		_state.setScissorTest( false );

		// render depth map

		for ( let i = 0, il = lights.length; i < il; i ++ ) {

			const light = lights[ i ];
			const shadow = light.shadow;

			if ( shadow === undefined ) {

				console.warn( 'THREE.WebGLShadowMap:', light, 'has no shadow.' );
				continue;

			}

			if ( shadow.autoUpdate === false && shadow.needsUpdate === false ) continue;

			_shadowMapSize.copy( shadow.mapSize );

			const shadowFrameExtents = shadow.getFrameExtents();

			_shadowMapSize.multiply( shadowFrameExtents );

			_viewportSize.copy( shadow.mapSize );

			if ( _shadowMapSize.x > _maxTextureSize || _shadowMapSize.y > _maxTextureSize ) {

				if ( _shadowMapSize.x > _maxTextureSize ) {

					_viewportSize.x = Math.floor( _maxTextureSize / shadowFrameExtents.x );
					_shadowMapSize.x = _viewportSize.x * shadowFrameExtents.x;
					shadow.mapSize.x = _viewportSize.x;

				}

				if ( _shadowMapSize.y > _maxTextureSize ) {

					_viewportSize.y = Math.floor( _maxTextureSize / shadowFrameExtents.y );
					_shadowMapSize.y = _viewportSize.y * shadowFrameExtents.y;
					shadow.mapSize.y = _viewportSize.y;

				}

			}

			if ( shadow.map === null && ! shadow.isPointLightShadow && this.type === VSMShadowMap ) {

				const pars = { minFilter: LinearFilter, magFilter: LinearFilter, format: RGBAFormat };

				shadow.map = new WebGLRenderTarget( _shadowMapSize.x, _shadowMapSize.y, pars );
				shadow.map.texture.name = light.name + '.shadowMap';

				shadow.mapPass = new WebGLRenderTarget( _shadowMapSize.x, _shadowMapSize.y, pars );

				shadow.camera.updateProjectionMatrix();

			}

			if ( shadow.map === null ) {

				const pars = { minFilter: NearestFilter, magFilter: NearestFilter, format: RGBAFormat };

				shadow.map = new WebGLRenderTarget( _shadowMapSize.x, _shadowMapSize.y, pars );
				shadow.map.texture.name = light.name + '.shadowMap';

				shadow.camera.updateProjectionMatrix();

			}

			_renderer.setRenderTarget( shadow.map );
			_renderer.clear();

			const viewportCount = shadow.getViewportCount();

			for ( let vp = 0; vp < viewportCount; vp ++ ) {

				const viewport = shadow.getViewport( vp );

				_viewport.set(
					_viewportSize.x * viewport.x,
					_viewportSize.y * viewport.y,
					_viewportSize.x * viewport.z,
					_viewportSize.y * viewport.w
				);

				_state.viewport( _viewport );

				shadow.updateMatrices( light, vp );

				_frustum = shadow.getFrustum();

				renderObject( scene, camera, shadow.camera, light, this.type );

			}

			// do blur pass for VSM

			if ( ! shadow.isPointLightShadow && this.type === VSMShadowMap ) {

				VSMPass( shadow, camera );

			}

			shadow.needsUpdate = false;

		}

		scope.needsUpdate = false;

		_renderer.setRenderTarget( currentRenderTarget, activeCubeFace, activeMipmapLevel );

	};

	function VSMPass( shadow, camera ) {

		const geometry = _objects.update( fullScreenMesh );

		if ( shadowMaterialVertical.defines.VSM_SAMPLES !== shadow.blurSamples ) {

			shadowMaterialVertical.defines.VSM_SAMPLES = shadow.blurSamples;
			shadowMaterialHorizontal.defines.VSM_SAMPLES = shadow.blurSamples;

			shadowMaterialVertical.needsUpdate = true;
			shadowMaterialHorizontal.needsUpdate = true;

		}

		// vertical pass

		shadowMaterialVertical.uniforms.shadow_pass.value = shadow.map.texture;
		shadowMaterialVertical.uniforms.resolution.value = shadow.mapSize;
		shadowMaterialVertical.uniforms.radius.value = shadow.radius;
		_renderer.setRenderTarget( shadow.mapPass );
		_renderer.clear();
		_renderer.renderBufferDirect( camera, null, geometry, shadowMaterialVertical, fullScreenMesh, null );

		// horizontal pass

		shadowMaterialHorizontal.uniforms.shadow_pass.value = shadow.mapPass.texture;
		shadowMaterialHorizontal.uniforms.resolution.value = shadow.mapSize;
		shadowMaterialHorizontal.uniforms.radius.value = shadow.radius;
		_renderer.setRenderTarget( shadow.map );
		_renderer.clear();
		_renderer.renderBufferDirect( camera, null, geometry, shadowMaterialHorizontal, fullScreenMesh, null );

	}

	function getDepthMaterial( object, material, light, shadowCameraNear, shadowCameraFar, type ) {

		let result = null;

		const customMaterial = ( light.isPointLight === true ) ? object.customDistanceMaterial : object.customDepthMaterial;

		if ( customMaterial !== undefined ) {

			result = customMaterial;

		} else {

			result = ( light.isPointLight === true ) ? _distanceMaterial : _depthMaterial;

		}

		if ( ( _renderer.localClippingEnabled && material.clipShadows === true && material.clippingPlanes.length !== 0 ) ||
			( material.displacementMap && material.displacementScale !== 0 ) ||
			( material.alphaMap && material.alphaTest > 0 ) ) {

			// in this case we need a unique material instance reflecting the
			// appropriate state

			const keyA = result.uuid, keyB = material.uuid;

			let materialsForVariant = _materialCache[ keyA ];

			if ( materialsForVariant === undefined ) {

				materialsForVariant = {};
				_materialCache[ keyA ] = materialsForVariant;

			}

			let cachedMaterial = materialsForVariant[ keyB ];

			if ( cachedMaterial === undefined ) {

				cachedMaterial = result.clone();
				materialsForVariant[ keyB ] = cachedMaterial;

			}

			result = cachedMaterial;

		}

		result.visible = material.visible;
		result.wireframe = material.wireframe;

		if ( type === VSMShadowMap ) {

			result.side = ( material.shadowSide !== null ) ? material.shadowSide : material.side;

		} else {

			result.side = ( material.shadowSide !== null ) ? material.shadowSide : shadowSide[ material.side ];

		}

		result.alphaMap = material.alphaMap;
		result.alphaTest = material.alphaTest;

		result.clipShadows = material.clipShadows;
		result.clippingPlanes = material.clippingPlanes;
		result.clipIntersection = material.clipIntersection;

		result.displacementMap = material.displacementMap;
		result.displacementScale = material.displacementScale;
		result.displacementBias = material.displacementBias;

		result.wireframeLinewidth = material.wireframeLinewidth;
		result.linewidth = material.linewidth;

		if ( light.isPointLight === true && result.isMeshDistanceMaterial === true ) {

			result.referencePosition.setFromMatrixPosition( light.matrixWorld );
			result.nearDistance = shadowCameraNear;
			result.farDistance = shadowCameraFar;

		}

		return result;

	}

	function renderObject( object, camera, shadowCamera, light, type ) {

		if ( object.visible === false ) return;

		const visible = object.layers.test( camera.layers );

		if ( visible && ( object.isMesh || object.isLine || object.isPoints ) ) {

			if ( ( object.castShadow || ( object.receiveShadow && type === VSMShadowMap ) ) && ( ! object.frustumCulled || _frustum.intersectsObject( object ) ) ) {

				object.modelViewMatrix.multiplyMatrices( shadowCamera.matrixWorldInverse, object.matrixWorld );

				const geometry = _objects.update( object );
				const material = object.material;

				if ( Array.isArray( material ) ) {

					const groups = geometry.groups;

					for ( let k = 0, kl = groups.length; k < kl; k ++ ) {

						const group = groups[ k ];
						const groupMaterial = material[ group.materialIndex ];

						if ( groupMaterial && groupMaterial.visible ) {

							const depthMaterial = getDepthMaterial( object, groupMaterial, light, shadowCamera.near, shadowCamera.far, type );

							_renderer.renderBufferDirect( shadowCamera, null, geometry, depthMaterial, object, group );

						}

					}

				} else if ( material.visible ) {

					const depthMaterial = getDepthMaterial( object, material, light, shadowCamera.near, shadowCamera.far, type );

					_renderer.renderBufferDirect( shadowCamera, null, geometry, depthMaterial, object, null );

				}

			}

		}

		const children = object.children;

		for ( let i = 0, l = children.length; i < l; i ++ ) {

			renderObject( children[ i ], camera, shadowCamera, light, type );

		}

	}

}

function WebGLState( gl, extensions, capabilities ) {

	const isWebGL2 = capabilities.isWebGL2;

	function ColorBuffer() {

		let locked = false;

		const color = new Vector4$1();
		let currentColorMask = null;
		const currentColorClear = new Vector4$1( 0, 0, 0, 0 );

		return {

			setMask: function ( colorMask ) {

				if ( currentColorMask !== colorMask && ! locked ) {

					gl.colorMask( colorMask, colorMask, colorMask, colorMask );
					currentColorMask = colorMask;

				}

			},

			setLocked: function ( lock ) {

				locked = lock;

			},

			setClear: function ( r, g, b, a, premultipliedAlpha ) {

				if ( premultipliedAlpha === true ) {

					r *= a; g *= a; b *= a;

				}

				color.set( r, g, b, a );

				if ( currentColorClear.equals( color ) === false ) {

					gl.clearColor( r, g, b, a );
					currentColorClear.copy( color );

				}

			},

			reset: function () {

				locked = false;

				currentColorMask = null;
				currentColorClear.set( - 1, 0, 0, 0 ); // set to invalid state

			}

		};

	}

	function DepthBuffer() {

		let locked = false;

		let currentDepthMask = null;
		let currentDepthFunc = null;
		let currentDepthClear = null;

		return {

			setTest: function ( depthTest ) {

				if ( depthTest ) {

					enable( 2929 );

				} else {

					disable( 2929 );

				}

			},

			setMask: function ( depthMask ) {

				if ( currentDepthMask !== depthMask && ! locked ) {

					gl.depthMask( depthMask );
					currentDepthMask = depthMask;

				}

			},

			setFunc: function ( depthFunc ) {

				if ( currentDepthFunc !== depthFunc ) {

					if ( depthFunc ) {

						switch ( depthFunc ) {

							case NeverDepth:

								gl.depthFunc( 512 );
								break;

							case AlwaysDepth:

								gl.depthFunc( 519 );
								break;

							case LessDepth:

								gl.depthFunc( 513 );
								break;

							case LessEqualDepth:

								gl.depthFunc( 515 );
								break;

							case EqualDepth:

								gl.depthFunc( 514 );
								break;

							case GreaterEqualDepth:

								gl.depthFunc( 518 );
								break;

							case GreaterDepth:

								gl.depthFunc( 516 );
								break;

							case NotEqualDepth:

								gl.depthFunc( 517 );
								break;

							default:

								gl.depthFunc( 515 );

						}

					} else {

						gl.depthFunc( 515 );

					}

					currentDepthFunc = depthFunc;

				}

			},

			setLocked: function ( lock ) {

				locked = lock;

			},

			setClear: function ( depth ) {

				if ( currentDepthClear !== depth ) {

					gl.clearDepth( depth );
					currentDepthClear = depth;

				}

			},

			reset: function () {

				locked = false;

				currentDepthMask = null;
				currentDepthFunc = null;
				currentDepthClear = null;

			}

		};

	}

	function StencilBuffer() {

		let locked = false;

		let currentStencilMask = null;
		let currentStencilFunc = null;
		let currentStencilRef = null;
		let currentStencilFuncMask = null;
		let currentStencilFail = null;
		let currentStencilZFail = null;
		let currentStencilZPass = null;
		let currentStencilClear = null;

		return {

			setTest: function ( stencilTest ) {

				if ( ! locked ) {

					if ( stencilTest ) {

						enable( 2960 );

					} else {

						disable( 2960 );

					}

				}

			},

			setMask: function ( stencilMask ) {

				if ( currentStencilMask !== stencilMask && ! locked ) {

					gl.stencilMask( stencilMask );
					currentStencilMask = stencilMask;

				}

			},

			setFunc: function ( stencilFunc, stencilRef, stencilMask ) {

				if ( currentStencilFunc !== stencilFunc ||
				     currentStencilRef !== stencilRef ||
				     currentStencilFuncMask !== stencilMask ) {

					gl.stencilFunc( stencilFunc, stencilRef, stencilMask );

					currentStencilFunc = stencilFunc;
					currentStencilRef = stencilRef;
					currentStencilFuncMask = stencilMask;

				}

			},

			setOp: function ( stencilFail, stencilZFail, stencilZPass ) {

				if ( currentStencilFail !== stencilFail ||
				     currentStencilZFail !== stencilZFail ||
				     currentStencilZPass !== stencilZPass ) {

					gl.stencilOp( stencilFail, stencilZFail, stencilZPass );

					currentStencilFail = stencilFail;
					currentStencilZFail = stencilZFail;
					currentStencilZPass = stencilZPass;

				}

			},

			setLocked: function ( lock ) {

				locked = lock;

			},

			setClear: function ( stencil ) {

				if ( currentStencilClear !== stencil ) {

					gl.clearStencil( stencil );
					currentStencilClear = stencil;

				}

			},

			reset: function () {

				locked = false;

				currentStencilMask = null;
				currentStencilFunc = null;
				currentStencilRef = null;
				currentStencilFuncMask = null;
				currentStencilFail = null;
				currentStencilZFail = null;
				currentStencilZPass = null;
				currentStencilClear = null;

			}

		};

	}

	//

	const colorBuffer = new ColorBuffer();
	const depthBuffer = new DepthBuffer();
	const stencilBuffer = new StencilBuffer();

	let enabledCapabilities = {};

	let currentBoundFramebuffers = {};
	let currentDrawbuffers = new WeakMap();
	let defaultDrawbuffers = [];

	let currentProgram = null;

	let currentBlendingEnabled = false;
	let currentBlending = null;
	let currentBlendEquation = null;
	let currentBlendSrc = null;
	let currentBlendDst = null;
	let currentBlendEquationAlpha = null;
	let currentBlendSrcAlpha = null;
	let currentBlendDstAlpha = null;
	let currentPremultipledAlpha = false;

	let currentFlipSided = null;
	let currentCullFace = null;

	let currentLineWidth = null;

	let currentPolygonOffsetFactor = null;
	let currentPolygonOffsetUnits = null;

	const maxTextures = gl.getParameter( 35661 );

	let lineWidthAvailable = false;
	let version = 0;
	const glVersion = gl.getParameter( 7938 );

	if ( glVersion.indexOf( 'WebGL' ) !== - 1 ) {

		version = parseFloat( /^WebGL (\d)/.exec( glVersion )[ 1 ] );
		lineWidthAvailable = ( version >= 1.0 );

	} else if ( glVersion.indexOf( 'OpenGL ES' ) !== - 1 ) {

		version = parseFloat( /^OpenGL ES (\d)/.exec( glVersion )[ 1 ] );
		lineWidthAvailable = ( version >= 2.0 );

	}

	let currentTextureSlot = null;
	let currentBoundTextures = {};

	const scissorParam = gl.getParameter( 3088 );
	const viewportParam = gl.getParameter( 2978 );

	const currentScissor = new Vector4$1().fromArray( scissorParam );
	const currentViewport = new Vector4$1().fromArray( viewportParam );

	function createTexture( type, target, count ) {

		const data = new Uint8Array( 4 ); // 4 is required to match default unpack alignment of 4.
		const texture = gl.createTexture();

		gl.bindTexture( type, texture );
		gl.texParameteri( type, 10241, 9728 );
		gl.texParameteri( type, 10240, 9728 );

		for ( let i = 0; i < count; i ++ ) {

			gl.texImage2D( target + i, 0, 6408, 1, 1, 0, 6408, 5121, data );

		}

		return texture;

	}

	const emptyTextures = {};
	emptyTextures[ 3553 ] = createTexture( 3553, 3553, 1 );
	emptyTextures[ 34067 ] = createTexture( 34067, 34069, 6 );

	// init

	colorBuffer.setClear( 0, 0, 0, 1 );
	depthBuffer.setClear( 1 );
	stencilBuffer.setClear( 0 );

	enable( 2929 );
	depthBuffer.setFunc( LessEqualDepth );

	setFlipSided( false );
	setCullFace( CullFaceBack );
	enable( 2884 );

	setBlending( NoBlending );

	//

	function enable( id ) {

		if ( enabledCapabilities[ id ] !== true ) {

			gl.enable( id );
			enabledCapabilities[ id ] = true;

		}

	}

	function disable( id ) {

		if ( enabledCapabilities[ id ] !== false ) {

			gl.disable( id );
			enabledCapabilities[ id ] = false;

		}

	}

	function bindFramebuffer( target, framebuffer ) {

		if ( currentBoundFramebuffers[ target ] !== framebuffer ) {

			gl.bindFramebuffer( target, framebuffer );

			currentBoundFramebuffers[ target ] = framebuffer;

			if ( isWebGL2 ) {

				// 36009 is equivalent to 36160

				if ( target === 36009 ) {

					currentBoundFramebuffers[ 36160 ] = framebuffer;

				}

				if ( target === 36160 ) {

					currentBoundFramebuffers[ 36009 ] = framebuffer;

				}

			}

			return true;

		}

		return false;

	}

	function drawBuffers( renderTarget, framebuffer ) {

		let drawBuffers = defaultDrawbuffers;

		let needsUpdate = false;

		if ( renderTarget ) {

			drawBuffers = currentDrawbuffers.get( framebuffer );

			if ( drawBuffers === undefined ) {

				drawBuffers = [];
				currentDrawbuffers.set( framebuffer, drawBuffers );

			}

			if ( renderTarget.isWebGLMultipleRenderTargets ) {

				const textures = renderTarget.texture;

				if ( drawBuffers.length !== textures.length || drawBuffers[ 0 ] !== 36064 ) {

					for ( let i = 0, il = textures.length; i < il; i ++ ) {

						drawBuffers[ i ] = 36064 + i;

					}

					drawBuffers.length = textures.length;

					needsUpdate = true;

				}

			} else {

				if ( drawBuffers[ 0 ] !== 36064 ) {

					drawBuffers[ 0 ] = 36064;

					needsUpdate = true;

				}

			}

		} else {

			if ( drawBuffers[ 0 ] !== 1029 ) {

				drawBuffers[ 0 ] = 1029;

				needsUpdate = true;

			}

		}

		if ( needsUpdate ) {

			if ( capabilities.isWebGL2 ) {

				gl.drawBuffers( drawBuffers );

			} else {

				extensions.get( 'WEBGL_draw_buffers' ).drawBuffersWEBGL( drawBuffers );

			}

		}


	}

	function useProgram( program ) {

		if ( currentProgram !== program ) {

			gl.useProgram( program );

			currentProgram = program;

			return true;

		}

		return false;

	}

	const equationToGL = {
		[ AddEquation ]: 32774,
		[ SubtractEquation ]: 32778,
		[ ReverseSubtractEquation ]: 32779
	};

	if ( isWebGL2 ) {

		equationToGL[ MinEquation ] = 32775;
		equationToGL[ MaxEquation ] = 32776;

	} else {

		const extension = extensions.get( 'EXT_blend_minmax' );

		if ( extension !== null ) {

			equationToGL[ MinEquation ] = extension.MIN_EXT;
			equationToGL[ MaxEquation ] = extension.MAX_EXT;

		}

	}

	const factorToGL = {
		[ ZeroFactor ]: 0,
		[ OneFactor ]: 1,
		[ SrcColorFactor ]: 768,
		[ SrcAlphaFactor ]: 770,
		[ SrcAlphaSaturateFactor ]: 776,
		[ DstColorFactor ]: 774,
		[ DstAlphaFactor ]: 772,
		[ OneMinusSrcColorFactor ]: 769,
		[ OneMinusSrcAlphaFactor ]: 771,
		[ OneMinusDstColorFactor ]: 775,
		[ OneMinusDstAlphaFactor ]: 773
	};

	function setBlending( blending, blendEquation, blendSrc, blendDst, blendEquationAlpha, blendSrcAlpha, blendDstAlpha, premultipliedAlpha ) {

		if ( blending === NoBlending ) {

			if ( currentBlendingEnabled === true ) {

				disable( 3042 );
				currentBlendingEnabled = false;

			}

			return;

		}

		if ( currentBlendingEnabled === false ) {

			enable( 3042 );
			currentBlendingEnabled = true;

		}

		if ( blending !== CustomBlending ) {

			if ( blending !== currentBlending || premultipliedAlpha !== currentPremultipledAlpha ) {

				if ( currentBlendEquation !== AddEquation || currentBlendEquationAlpha !== AddEquation ) {

					gl.blendEquation( 32774 );

					currentBlendEquation = AddEquation;
					currentBlendEquationAlpha = AddEquation;

				}

				if ( premultipliedAlpha ) {

					switch ( blending ) {

						case NormalBlending:
							gl.blendFuncSeparate( 1, 771, 1, 771 );
							break;

						case AdditiveBlending:
							gl.blendFunc( 1, 1 );
							break;

						case SubtractiveBlending:
							gl.blendFuncSeparate( 0, 769, 0, 1 );
							break;

						case MultiplyBlending:
							gl.blendFuncSeparate( 0, 768, 0, 770 );
							break;

						default:
							console.error( 'THREE.WebGLState: Invalid blending: ', blending );
							break;

					}

				} else {

					switch ( blending ) {

						case NormalBlending:
							gl.blendFuncSeparate( 770, 771, 1, 771 );
							break;

						case AdditiveBlending:
							gl.blendFunc( 770, 1 );
							break;

						case SubtractiveBlending:
							gl.blendFuncSeparate( 0, 769, 0, 1 );
							break;

						case MultiplyBlending:
							gl.blendFunc( 0, 768 );
							break;

						default:
							console.error( 'THREE.WebGLState: Invalid blending: ', blending );
							break;

					}

				}

				currentBlendSrc = null;
				currentBlendDst = null;
				currentBlendSrcAlpha = null;
				currentBlendDstAlpha = null;

				currentBlending = blending;
				currentPremultipledAlpha = premultipliedAlpha;

			}

			return;

		}

		// custom blending

		blendEquationAlpha = blendEquationAlpha || blendEquation;
		blendSrcAlpha = blendSrcAlpha || blendSrc;
		blendDstAlpha = blendDstAlpha || blendDst;

		if ( blendEquation !== currentBlendEquation || blendEquationAlpha !== currentBlendEquationAlpha ) {

			gl.blendEquationSeparate( equationToGL[ blendEquation ], equationToGL[ blendEquationAlpha ] );

			currentBlendEquation = blendEquation;
			currentBlendEquationAlpha = blendEquationAlpha;

		}

		if ( blendSrc !== currentBlendSrc || blendDst !== currentBlendDst || blendSrcAlpha !== currentBlendSrcAlpha || blendDstAlpha !== currentBlendDstAlpha ) {

			gl.blendFuncSeparate( factorToGL[ blendSrc ], factorToGL[ blendDst ], factorToGL[ blendSrcAlpha ], factorToGL[ blendDstAlpha ] );

			currentBlendSrc = blendSrc;
			currentBlendDst = blendDst;
			currentBlendSrcAlpha = blendSrcAlpha;
			currentBlendDstAlpha = blendDstAlpha;

		}

		currentBlending = blending;
		currentPremultipledAlpha = null;

	}

	function setMaterial( material, frontFaceCW ) {

		material.side === DoubleSide
			? disable( 2884 )
			: enable( 2884 );

		let flipSided = ( material.side === BackSide );
		if ( frontFaceCW ) flipSided = ! flipSided;

		setFlipSided( flipSided );

		( material.blending === NormalBlending && material.transparent === false )
			? setBlending( NoBlending )
			: setBlending( material.blending, material.blendEquation, material.blendSrc, material.blendDst, material.blendEquationAlpha, material.blendSrcAlpha, material.blendDstAlpha, material.premultipliedAlpha );

		depthBuffer.setFunc( material.depthFunc );
		depthBuffer.setTest( material.depthTest );
		depthBuffer.setMask( material.depthWrite );
		colorBuffer.setMask( material.colorWrite );

		const stencilWrite = material.stencilWrite;
		stencilBuffer.setTest( stencilWrite );
		if ( stencilWrite ) {

			stencilBuffer.setMask( material.stencilWriteMask );
			stencilBuffer.setFunc( material.stencilFunc, material.stencilRef, material.stencilFuncMask );
			stencilBuffer.setOp( material.stencilFail, material.stencilZFail, material.stencilZPass );

		}

		setPolygonOffset( material.polygonOffset, material.polygonOffsetFactor, material.polygonOffsetUnits );

		material.alphaToCoverage === true
			? enable( 32926 )
			: disable( 32926 );

	}

	//

	function setFlipSided( flipSided ) {

		if ( currentFlipSided !== flipSided ) {

			if ( flipSided ) {

				gl.frontFace( 2304 );

			} else {

				gl.frontFace( 2305 );

			}

			currentFlipSided = flipSided;

		}

	}

	function setCullFace( cullFace ) {

		if ( cullFace !== CullFaceNone ) {

			enable( 2884 );

			if ( cullFace !== currentCullFace ) {

				if ( cullFace === CullFaceBack ) {

					gl.cullFace( 1029 );

				} else if ( cullFace === CullFaceFront ) {

					gl.cullFace( 1028 );

				} else {

					gl.cullFace( 1032 );

				}

			}

		} else {

			disable( 2884 );

		}

		currentCullFace = cullFace;

	}

	function setLineWidth( width ) {

		if ( width !== currentLineWidth ) {

			if ( lineWidthAvailable ) gl.lineWidth( width );

			currentLineWidth = width;

		}

	}

	function setPolygonOffset( polygonOffset, factor, units ) {

		if ( polygonOffset ) {

			enable( 32823 );

			if ( currentPolygonOffsetFactor !== factor || currentPolygonOffsetUnits !== units ) {

				gl.polygonOffset( factor, units );

				currentPolygonOffsetFactor = factor;
				currentPolygonOffsetUnits = units;

			}

		} else {

			disable( 32823 );

		}

	}

	function setScissorTest( scissorTest ) {

		if ( scissorTest ) {

			enable( 3089 );

		} else {

			disable( 3089 );

		}

	}

	// texture

	function activeTexture( webglSlot ) {

		if ( webglSlot === undefined ) webglSlot = 33984 + maxTextures - 1;

		if ( currentTextureSlot !== webglSlot ) {

			gl.activeTexture( webglSlot );
			currentTextureSlot = webglSlot;

		}

	}

	function bindTexture( webglType, webglTexture ) {

		if ( currentTextureSlot === null ) {

			activeTexture();

		}

		let boundTexture = currentBoundTextures[ currentTextureSlot ];

		if ( boundTexture === undefined ) {

			boundTexture = { type: undefined, texture: undefined };
			currentBoundTextures[ currentTextureSlot ] = boundTexture;

		}

		if ( boundTexture.type !== webglType || boundTexture.texture !== webglTexture ) {

			gl.bindTexture( webglType, webglTexture || emptyTextures[ webglType ] );

			boundTexture.type = webglType;
			boundTexture.texture = webglTexture;

		}

	}

	function unbindTexture() {

		const boundTexture = currentBoundTextures[ currentTextureSlot ];

		if ( boundTexture !== undefined && boundTexture.type !== undefined ) {

			gl.bindTexture( boundTexture.type, null );

			boundTexture.type = undefined;
			boundTexture.texture = undefined;

		}

	}

	function compressedTexImage2D() {

		try {

			gl.compressedTexImage2D.apply( gl, arguments );

		} catch ( error ) {

			console.error( 'THREE.WebGLState:', error );

		}

	}

	function texSubImage2D() {

		try {

			gl.texSubImage2D.apply( gl, arguments );

		} catch ( error ) {

			console.error( 'THREE.WebGLState:', error );

		}

	}

	function texSubImage3D() {

		try {

			gl.texSubImage3D.apply( gl, arguments );

		} catch ( error ) {

			console.error( 'THREE.WebGLState:', error );

		}

	}

	function compressedTexSubImage2D() {

		try {

			gl.compressedTexSubImage2D.apply( gl, arguments );

		} catch ( error ) {

			console.error( 'THREE.WebGLState:', error );

		}

	}

	function texStorage2D() {

		try {

			gl.texStorage2D.apply( gl, arguments );

		} catch ( error ) {

			console.error( 'THREE.WebGLState:', error );

		}

	}

	function texStorage3D() {

		try {

			gl.texStorage3D.apply( gl, arguments );

		} catch ( error ) {

			console.error( 'THREE.WebGLState:', error );

		}

	}

	function texImage2D() {

		try {

			gl.texImage2D.apply( gl, arguments );

		} catch ( error ) {

			console.error( 'THREE.WebGLState:', error );

		}

	}

	function texImage3D() {

		try {

			gl.texImage3D.apply( gl, arguments );

		} catch ( error ) {

			console.error( 'THREE.WebGLState:', error );

		}

	}

	//

	function scissor( scissor ) {

		if ( currentScissor.equals( scissor ) === false ) {

			gl.scissor( scissor.x, scissor.y, scissor.z, scissor.w );
			currentScissor.copy( scissor );

		}

	}

	function viewport( viewport ) {

		if ( currentViewport.equals( viewport ) === false ) {

			gl.viewport( viewport.x, viewport.y, viewport.z, viewport.w );
			currentViewport.copy( viewport );

		}

	}

	//

	function reset() {

		// reset state

		gl.disable( 3042 );
		gl.disable( 2884 );
		gl.disable( 2929 );
		gl.disable( 32823 );
		gl.disable( 3089 );
		gl.disable( 2960 );
		gl.disable( 32926 );

		gl.blendEquation( 32774 );
		gl.blendFunc( 1, 0 );
		gl.blendFuncSeparate( 1, 0, 1, 0 );

		gl.colorMask( true, true, true, true );
		gl.clearColor( 0, 0, 0, 0 );

		gl.depthMask( true );
		gl.depthFunc( 513 );
		gl.clearDepth( 1 );

		gl.stencilMask( 0xffffffff );
		gl.stencilFunc( 519, 0, 0xffffffff );
		gl.stencilOp( 7680, 7680, 7680 );
		gl.clearStencil( 0 );

		gl.cullFace( 1029 );
		gl.frontFace( 2305 );

		gl.polygonOffset( 0, 0 );

		gl.activeTexture( 33984 );

		gl.bindFramebuffer( 36160, null );

		if ( isWebGL2 === true ) {

			gl.bindFramebuffer( 36009, null );
			gl.bindFramebuffer( 36008, null );

		}

		gl.useProgram( null );

		gl.lineWidth( 1 );

		gl.scissor( 0, 0, gl.canvas.width, gl.canvas.height );
		gl.viewport( 0, 0, gl.canvas.width, gl.canvas.height );

		// reset internals

		enabledCapabilities = {};

		currentTextureSlot = null;
		currentBoundTextures = {};

		currentBoundFramebuffers = {};
		currentDrawbuffers = new WeakMap();
		defaultDrawbuffers = [];

		currentProgram = null;

		currentBlendingEnabled = false;
		currentBlending = null;
		currentBlendEquation = null;
		currentBlendSrc = null;
		currentBlendDst = null;
		currentBlendEquationAlpha = null;
		currentBlendSrcAlpha = null;
		currentBlendDstAlpha = null;
		currentPremultipledAlpha = false;

		currentFlipSided = null;
		currentCullFace = null;

		currentLineWidth = null;

		currentPolygonOffsetFactor = null;
		currentPolygonOffsetUnits = null;

		currentScissor.set( 0, 0, gl.canvas.width, gl.canvas.height );
		currentViewport.set( 0, 0, gl.canvas.width, gl.canvas.height );

		colorBuffer.reset();
		depthBuffer.reset();
		stencilBuffer.reset();

	}

	return {

		buffers: {
			color: colorBuffer,
			depth: depthBuffer,
			stencil: stencilBuffer
		},

		enable: enable,
		disable: disable,

		bindFramebuffer: bindFramebuffer,
		drawBuffers: drawBuffers,

		useProgram: useProgram,

		setBlending: setBlending,
		setMaterial: setMaterial,

		setFlipSided: setFlipSided,
		setCullFace: setCullFace,

		setLineWidth: setLineWidth,
		setPolygonOffset: setPolygonOffset,

		setScissorTest: setScissorTest,

		activeTexture: activeTexture,
		bindTexture: bindTexture,
		unbindTexture: unbindTexture,
		compressedTexImage2D: compressedTexImage2D,
		texImage2D: texImage2D,
		texImage3D: texImage3D,

		texStorage2D: texStorage2D,
		texStorage3D: texStorage3D,
		texSubImage2D: texSubImage2D,
		texSubImage3D: texSubImage3D,
		compressedTexSubImage2D: compressedTexSubImage2D,

		scissor: scissor,
		viewport: viewport,

		reset: reset

	};

}

function WebGLTextures( _gl, extensions, state, properties, capabilities, utils, info ) {

	const isWebGL2 = capabilities.isWebGL2;
	const maxTextures = capabilities.maxTextures;
	const maxCubemapSize = capabilities.maxCubemapSize;
	const maxTextureSize = capabilities.maxTextureSize;
	const maxSamples = capabilities.maxSamples;
	const multisampledRTTExt = extensions.has( 'WEBGL_multisampled_render_to_texture' ) ? extensions.get( 'WEBGL_multisampled_render_to_texture' ) : null;

	const _videoTextures = new WeakMap();
	let _canvas;

	const _sources = new WeakMap(); // maps WebglTexture objects to instances of Source

	// cordova iOS (as of 5.0) still uses UIWebView, which provides OffscreenCanvas,
	// also OffscreenCanvas.getContext("webgl"), but not OffscreenCanvas.getContext("2d")!
	// Some implementations may only implement OffscreenCanvas partially (e.g. lacking 2d).

	let useOffscreenCanvas = false;

	try {

		useOffscreenCanvas = typeof OffscreenCanvas !== 'undefined'
			&& ( new OffscreenCanvas( 1, 1 ).getContext( '2d' ) ) !== null;

	} catch ( err ) {

		// Ignore any errors

	}

	function createCanvas( width, height ) {

		// Use OffscreenCanvas when available. Specially needed in web workers

		return useOffscreenCanvas ?
			new OffscreenCanvas( width, height ) : createElementNS( 'canvas' );

	}

	function resizeImage( image, needsPowerOfTwo, needsNewCanvas, maxSize ) {

		let scale = 1;

		// handle case if texture exceeds max size

		if ( image.width > maxSize || image.height > maxSize ) {

			scale = maxSize / Math.max( image.width, image.height );

		}

		// only perform resize if necessary

		if ( scale < 1 || needsPowerOfTwo === true ) {

			// only perform resize for certain image types

			if ( ( typeof HTMLImageElement !== 'undefined' && image instanceof HTMLImageElement ) ||
				( typeof HTMLCanvasElement !== 'undefined' && image instanceof HTMLCanvasElement ) ||
				( typeof ImageBitmap !== 'undefined' && image instanceof ImageBitmap ) ) {

				const floor = needsPowerOfTwo ? floorPowerOfTwo : Math.floor;

				const width = floor( scale * image.width );
				const height = floor( scale * image.height );

				if ( _canvas === undefined ) _canvas = createCanvas( width, height );

				// cube textures can't reuse the same canvas

				const canvas = needsNewCanvas ? createCanvas( width, height ) : _canvas;

				canvas.width = width;
				canvas.height = height;

				const context = canvas.getContext( '2d' );
				context.drawImage( image, 0, 0, width, height );

				console.warn( 'THREE.WebGLRenderer: Texture has been resized from (' + image.width + 'x' + image.height + ') to (' + width + 'x' + height + ').' );

				return canvas;

			} else {

				if ( 'data' in image ) {

					console.warn( 'THREE.WebGLRenderer: Image in DataTexture is too big (' + image.width + 'x' + image.height + ').' );

				}

				return image;

			}

		}

		return image;

	}

	function isPowerOfTwo$1( image ) {

		return isPowerOfTwo( image.width ) && isPowerOfTwo( image.height );

	}

	function textureNeedsPowerOfTwo( texture ) {

		if ( isWebGL2 ) return false;

		return ( texture.wrapS !== ClampToEdgeWrapping || texture.wrapT !== ClampToEdgeWrapping ) ||
			( texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter );

	}

	function textureNeedsGenerateMipmaps( texture, supportsMips ) {

		return texture.generateMipmaps && supportsMips &&
			texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter;

	}

	function generateMipmap( target ) {

		_gl.generateMipmap( target );

	}

	function getInternalFormat( internalFormatName, glFormat, glType, encoding, isVideoTexture = false ) {

		if ( isWebGL2 === false ) return glFormat;

		if ( internalFormatName !== null ) {

			if ( _gl[ internalFormatName ] !== undefined ) return _gl[ internalFormatName ];

			console.warn( 'THREE.WebGLRenderer: Attempt to use non-existing WebGL internal format \'' + internalFormatName + '\'' );

		}

		let internalFormat = glFormat;

		if ( glFormat === 6403 ) {

			if ( glType === 5126 ) internalFormat = 33326;
			if ( glType === 5131 ) internalFormat = 33325;
			if ( glType === 5121 ) internalFormat = 33321;

		}

		if ( glFormat === 33319 ) {

			if ( glType === 5126 ) internalFormat = 33328;
			if ( glType === 5131 ) internalFormat = 33327;
			if ( glType === 5121 ) internalFormat = 33323;

		}

		if ( glFormat === 6408 ) {

			if ( glType === 5126 ) internalFormat = 34836;
			if ( glType === 5131 ) internalFormat = 34842;
			if ( glType === 5121 ) internalFormat = ( encoding === sRGBEncoding && isVideoTexture === false ) ? 35907 : 32856;
			if ( glType === 32819 ) internalFormat = 32854;
			if ( glType === 32820 ) internalFormat = 32855;

		}

		if ( internalFormat === 33325 || internalFormat === 33326 ||
			internalFormat === 33327 || internalFormat === 33328 ||
			internalFormat === 34842 || internalFormat === 34836 ) {

			extensions.get( 'EXT_color_buffer_float' );

		}

		return internalFormat;

	}

	function getMipLevels( texture, image, supportsMips ) {

		if ( textureNeedsGenerateMipmaps( texture, supportsMips ) === true || ( texture.isFramebufferTexture && texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter ) ) {

			return Math.log2( Math.max( image.width, image.height ) ) + 1;

		} else if ( texture.mipmaps !== undefined && texture.mipmaps.length > 0 ) {

			// user-defined mipmaps

			return texture.mipmaps.length;

		} else if ( texture.isCompressedTexture && Array.isArray( texture.image ) ) {

			return image.mipmaps.length;

		} else {

			// texture without mipmaps (only base level)

			return 1;

		}

	}

	// Fallback filters for non-power-of-2 textures

	function filterFallback( f ) {

		if ( f === NearestFilter || f === NearestMipmapNearestFilter || f === NearestMipmapLinearFilter ) {

			return 9728;

		}

		return 9729;

	}

	//

	function onTextureDispose( event ) {

		const texture = event.target;

		texture.removeEventListener( 'dispose', onTextureDispose );

		deallocateTexture( texture );

		if ( texture.isVideoTexture ) {

			_videoTextures.delete( texture );

		}

	}

	function onRenderTargetDispose( event ) {

		const renderTarget = event.target;

		renderTarget.removeEventListener( 'dispose', onRenderTargetDispose );

		deallocateRenderTarget( renderTarget );

	}

	//

	function deallocateTexture( texture ) {

		const textureProperties = properties.get( texture );

		if ( textureProperties.__webglInit === undefined ) return;

		// check if it's necessary to remove the WebGLTexture object

		const source = texture.source;
		const webglTextures = _sources.get( source );

		if ( webglTextures ) {

			const webglTexture = webglTextures[ textureProperties.__cacheKey ];
			webglTexture.usedTimes --;

			// the WebGLTexture object is not used anymore, remove it

			if ( webglTexture.usedTimes === 0 ) {

				deleteTexture( texture );

			}

			// remove the weak map entry if no WebGLTexture uses the source anymore

			if ( Object.keys( webglTextures ).length === 0 ) {

				_sources.delete( source );

			}

		}

		properties.remove( texture );

	}

	function deleteTexture( texture ) {

		const textureProperties = properties.get( texture );
		_gl.deleteTexture( textureProperties.__webglTexture );

		const source = texture.source;
		const webglTextures = _sources.get( source );
		delete webglTextures[ textureProperties.__cacheKey ];

		info.memory.textures --;

	}

	function deallocateRenderTarget( renderTarget ) {

		const texture = renderTarget.texture;

		const renderTargetProperties = properties.get( renderTarget );
		const textureProperties = properties.get( texture );

		if ( textureProperties.__webglTexture !== undefined ) {

			_gl.deleteTexture( textureProperties.__webglTexture );

			info.memory.textures --;

		}

		if ( renderTarget.depthTexture ) {

			renderTarget.depthTexture.dispose();

		}

		if ( renderTarget.isWebGLCubeRenderTarget ) {

			for ( let i = 0; i < 6; i ++ ) {

				_gl.deleteFramebuffer( renderTargetProperties.__webglFramebuffer[ i ] );
				if ( renderTargetProperties.__webglDepthbuffer ) _gl.deleteRenderbuffer( renderTargetProperties.__webglDepthbuffer[ i ] );

			}

		} else {

			_gl.deleteFramebuffer( renderTargetProperties.__webglFramebuffer );
			if ( renderTargetProperties.__webglDepthbuffer ) _gl.deleteRenderbuffer( renderTargetProperties.__webglDepthbuffer );
			if ( renderTargetProperties.__webglMultisampledFramebuffer ) _gl.deleteFramebuffer( renderTargetProperties.__webglMultisampledFramebuffer );
			if ( renderTargetProperties.__webglColorRenderbuffer ) _gl.deleteRenderbuffer( renderTargetProperties.__webglColorRenderbuffer );
			if ( renderTargetProperties.__webglDepthRenderbuffer ) _gl.deleteRenderbuffer( renderTargetProperties.__webglDepthRenderbuffer );

		}

		if ( renderTarget.isWebGLMultipleRenderTargets ) {

			for ( let i = 0, il = texture.length; i < il; i ++ ) {

				const attachmentProperties = properties.get( texture[ i ] );

				if ( attachmentProperties.__webglTexture ) {

					_gl.deleteTexture( attachmentProperties.__webglTexture );

					info.memory.textures --;

				}

				properties.remove( texture[ i ] );

			}

		}

		properties.remove( texture );
		properties.remove( renderTarget );

	}

	//

	let textureUnits = 0;

	function resetTextureUnits() {

		textureUnits = 0;

	}

	function allocateTextureUnit() {

		const textureUnit = textureUnits;

		if ( textureUnit >= maxTextures ) {

			console.warn( 'THREE.WebGLTextures: Trying to use ' + textureUnit + ' texture units while this GPU supports only ' + maxTextures );

		}

		textureUnits += 1;

		return textureUnit;

	}

	function getTextureCacheKey( texture ) {

		const array = [];

		array.push( texture.wrapS );
		array.push( texture.wrapT );
		array.push( texture.magFilter );
		array.push( texture.minFilter );
		array.push( texture.anisotropy );
		array.push( texture.internalFormat );
		array.push( texture.format );
		array.push( texture.type );
		array.push( texture.generateMipmaps );
		array.push( texture.premultiplyAlpha );
		array.push( texture.flipY );
		array.push( texture.unpackAlignment );
		array.push( texture.encoding );

		return array.join();

	}

	//

	function setTexture2D( texture, slot ) {

		const textureProperties = properties.get( texture );

		if ( texture.isVideoTexture ) updateVideoTexture( texture );

		if ( texture.isRenderTargetTexture === false && texture.version > 0 && textureProperties.__version !== texture.version ) {

			const image = texture.image;

			if ( image === null ) {

				console.warn( 'THREE.WebGLRenderer: Texture marked for update but no image data found.' );

			} else if ( image.complete === false ) {

				console.warn( 'THREE.WebGLRenderer: Texture marked for update but image is incomplete' );

			} else {

				uploadTexture( textureProperties, texture, slot );
				return;

			}

		}

		state.activeTexture( 33984 + slot );
		state.bindTexture( 3553, textureProperties.__webglTexture );

	}

	function setTexture2DArray( texture, slot ) {

		const textureProperties = properties.get( texture );

		if ( texture.version > 0 && textureProperties.__version !== texture.version ) {

			uploadTexture( textureProperties, texture, slot );
			return;

		}

		state.activeTexture( 33984 + slot );
		state.bindTexture( 35866, textureProperties.__webglTexture );

	}

	function setTexture3D( texture, slot ) {

		const textureProperties = properties.get( texture );

		if ( texture.version > 0 && textureProperties.__version !== texture.version ) {

			uploadTexture( textureProperties, texture, slot );
			return;

		}

		state.activeTexture( 33984 + slot );
		state.bindTexture( 32879, textureProperties.__webglTexture );

	}

	function setTextureCube( texture, slot ) {

		const textureProperties = properties.get( texture );

		if ( texture.version > 0 && textureProperties.__version !== texture.version ) {

			uploadCubeTexture( textureProperties, texture, slot );
			return;

		}

		state.activeTexture( 33984 + slot );
		state.bindTexture( 34067, textureProperties.__webglTexture );

	}

	const wrappingToGL = {
		[ RepeatWrapping ]: 10497,
		[ ClampToEdgeWrapping ]: 33071,
		[ MirroredRepeatWrapping ]: 33648
	};

	const filterToGL = {
		[ NearestFilter ]: 9728,
		[ NearestMipmapNearestFilter ]: 9984,
		[ NearestMipmapLinearFilter ]: 9986,

		[ LinearFilter ]: 9729,
		[ LinearMipmapNearestFilter ]: 9985,
		[ LinearMipmapLinearFilter ]: 9987
	};

	function setTextureParameters( textureType, texture, supportsMips ) {

		if ( supportsMips ) {

			_gl.texParameteri( textureType, 10242, wrappingToGL[ texture.wrapS ] );
			_gl.texParameteri( textureType, 10243, wrappingToGL[ texture.wrapT ] );

			if ( textureType === 32879 || textureType === 35866 ) {

				_gl.texParameteri( textureType, 32882, wrappingToGL[ texture.wrapR ] );

			}

			_gl.texParameteri( textureType, 10240, filterToGL[ texture.magFilter ] );
			_gl.texParameteri( textureType, 10241, filterToGL[ texture.minFilter ] );

		} else {

			_gl.texParameteri( textureType, 10242, 33071 );
			_gl.texParameteri( textureType, 10243, 33071 );

			if ( textureType === 32879 || textureType === 35866 ) {

				_gl.texParameteri( textureType, 32882, 33071 );

			}

			if ( texture.wrapS !== ClampToEdgeWrapping || texture.wrapT !== ClampToEdgeWrapping ) {

				console.warn( 'THREE.WebGLRenderer: Texture is not power of two. Texture.wrapS and Texture.wrapT should be set to THREE.ClampToEdgeWrapping.' );

			}

			_gl.texParameteri( textureType, 10240, filterFallback( texture.magFilter ) );
			_gl.texParameteri( textureType, 10241, filterFallback( texture.minFilter ) );

			if ( texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter ) {

				console.warn( 'THREE.WebGLRenderer: Texture is not power of two. Texture.minFilter should be set to THREE.NearestFilter or THREE.LinearFilter.' );

			}

		}

		if ( extensions.has( 'EXT_texture_filter_anisotropic' ) === true ) {

			const extension = extensions.get( 'EXT_texture_filter_anisotropic' );

			if ( texture.type === FloatType && extensions.has( 'OES_texture_float_linear' ) === false ) return; // verify extension for WebGL 1 and WebGL 2
			if ( isWebGL2 === false && ( texture.type === HalfFloatType && extensions.has( 'OES_texture_half_float_linear' ) === false ) ) return; // verify extension for WebGL 1 only

			if ( texture.anisotropy > 1 || properties.get( texture ).__currentAnisotropy ) {

				_gl.texParameterf( textureType, extension.TEXTURE_MAX_ANISOTROPY_EXT, Math.min( texture.anisotropy, capabilities.getMaxAnisotropy() ) );
				properties.get( texture ).__currentAnisotropy = texture.anisotropy;

			}

		}

	}

	function initTexture( textureProperties, texture ) {

		let forceUpload = false;

		if ( textureProperties.__webglInit === undefined ) {

			textureProperties.__webglInit = true;

			texture.addEventListener( 'dispose', onTextureDispose );

		}

		// create Source <-> WebGLTextures mapping if necessary

		const source = texture.source;
		let webglTextures = _sources.get( source );

		if ( webglTextures === undefined ) {

			webglTextures = {};
			_sources.set( source, webglTextures );

		}

		// check if there is already a WebGLTexture object for the given texture parameters

		const textureCacheKey = getTextureCacheKey( texture );

		if ( textureCacheKey !== textureProperties.__cacheKey ) {

			// if not, create a new instance of WebGLTexture

			if ( webglTextures[ textureCacheKey ] === undefined ) {

				// create new entry

				webglTextures[ textureCacheKey ] = {
					texture: _gl.createTexture(),
					usedTimes: 0
				};

				info.memory.textures ++;

				// when a new instance of WebGLTexture was created, a texture upload is required
				// even if the image contents are identical

				forceUpload = true;

			}

			webglTextures[ textureCacheKey ].usedTimes ++;

			// every time the texture cache key changes, it's necessary to check if an instance of
			// WebGLTexture can be deleted in order to avoid a memory leak.

			const webglTexture = webglTextures[ textureProperties.__cacheKey ];

			if ( webglTexture !== undefined ) {

				webglTextures[ textureProperties.__cacheKey ].usedTimes --;

				if ( webglTexture.usedTimes === 0 ) {

					deleteTexture( texture );

				}

			}

			// store references to cache key and WebGLTexture object

			textureProperties.__cacheKey = textureCacheKey;
			textureProperties.__webglTexture = webglTextures[ textureCacheKey ].texture;

		}

		return forceUpload;

	}

	function uploadTexture( textureProperties, texture, slot ) {

		let textureType = 3553;

		if ( texture.isDataArrayTexture ) textureType = 35866;
		if ( texture.isData3DTexture ) textureType = 32879;

		const forceUpload = initTexture( textureProperties, texture );
		const source = texture.source;

		state.activeTexture( 33984 + slot );
		state.bindTexture( textureType, textureProperties.__webglTexture );

		if ( source.version !== source.__currentVersion || forceUpload === true ) {

			_gl.pixelStorei( 37440, texture.flipY );
			_gl.pixelStorei( 37441, texture.premultiplyAlpha );
			_gl.pixelStorei( 3317, texture.unpackAlignment );
			_gl.pixelStorei( 37443, 0 );

			const needsPowerOfTwo = textureNeedsPowerOfTwo( texture ) && isPowerOfTwo$1( texture.image ) === false;
			let image = resizeImage( texture.image, needsPowerOfTwo, false, maxTextureSize );
			image = verifyColorSpace( texture, image );

			const supportsMips = isPowerOfTwo$1( image ) || isWebGL2,
				glFormat = utils.convert( texture.format, texture.encoding );

			let glType = utils.convert( texture.type ),
				glInternalFormat = getInternalFormat( texture.internalFormat, glFormat, glType, texture.encoding, texture.isVideoTexture );

			setTextureParameters( textureType, texture, supportsMips );

			let mipmap;
			const mipmaps = texture.mipmaps;

			const useTexStorage = ( isWebGL2 && texture.isVideoTexture !== true );
			const allocateMemory = ( textureProperties.__version === undefined );
			const levels = getMipLevels( texture, image, supportsMips );

			if ( texture.isDepthTexture ) {

				// populate depth texture with dummy data

				glInternalFormat = 6402;

				if ( isWebGL2 ) {

					if ( texture.type === FloatType ) {

						glInternalFormat = 36012;

					} else if ( texture.type === UnsignedIntType ) {

						glInternalFormat = 33190;

					} else if ( texture.type === UnsignedInt248Type ) {

						glInternalFormat = 35056;

					} else {

						glInternalFormat = 33189; // WebGL2 requires sized internalformat for glTexImage2D

					}

				} else {

					if ( texture.type === FloatType ) {

						console.error( 'WebGLRenderer: Floating point depth texture requires WebGL2.' );

					}

				}

				// validation checks for WebGL 1

				if ( texture.format === DepthFormat && glInternalFormat === 6402 ) {

					// The error INVALID_OPERATION is generated by texImage2D if format and internalformat are
					// DEPTH_COMPONENT and type is not UNSIGNED_SHORT or UNSIGNED_INT
					// (https://www.khronos.org/registry/webgl/extensions/WEBGL_depth_texture/)
					if ( texture.type !== UnsignedShortType && texture.type !== UnsignedIntType ) {

						console.warn( 'THREE.WebGLRenderer: Use UnsignedShortType or UnsignedIntType for DepthFormat DepthTexture.' );

						texture.type = UnsignedShortType;
						glType = utils.convert( texture.type );

					}

				}

				if ( texture.format === DepthStencilFormat && glInternalFormat === 6402 ) {

					// Depth stencil textures need the DEPTH_STENCIL internal format
					// (https://www.khronos.org/registry/webgl/extensions/WEBGL_depth_texture/)
					glInternalFormat = 34041;

					// The error INVALID_OPERATION is generated by texImage2D if format and internalformat are
					// DEPTH_STENCIL and type is not UNSIGNED_INT_24_8_WEBGL.
					// (https://www.khronos.org/registry/webgl/extensions/WEBGL_depth_texture/)
					if ( texture.type !== UnsignedInt248Type ) {

						console.warn( 'THREE.WebGLRenderer: Use UnsignedInt248Type for DepthStencilFormat DepthTexture.' );

						texture.type = UnsignedInt248Type;
						glType = utils.convert( texture.type );

					}

				}

				//

				if ( useTexStorage && allocateMemory ) {

					state.texStorage2D( 3553, 1, glInternalFormat, image.width, image.height );

				} else {

					state.texImage2D( 3553, 0, glInternalFormat, image.width, image.height, 0, glFormat, glType, null );

				}

			} else if ( texture.isDataTexture ) {

				// use manually created mipmaps if available
				// if there are no manual mipmaps
				// set 0 level mipmap and then use GL to generate other mipmap levels

				if ( mipmaps.length > 0 && supportsMips ) {

					if ( useTexStorage && allocateMemory ) {

						state.texStorage2D( 3553, levels, glInternalFormat, mipmaps[ 0 ].width, mipmaps[ 0 ].height );

					}

					for ( let i = 0, il = mipmaps.length; i < il; i ++ ) {

						mipmap = mipmaps[ i ];

						if ( useTexStorage ) {

							state.texSubImage2D( 3553, i, 0, 0, mipmap.width, mipmap.height, glFormat, glType, mipmap.data );

						} else {

							state.texImage2D( 3553, i, glInternalFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data );

						}

					}

					texture.generateMipmaps = false;

				} else {

					if ( useTexStorage ) {

						if ( allocateMemory ) {

							state.texStorage2D( 3553, levels, glInternalFormat, image.width, image.height );

						}

						state.texSubImage2D( 3553, 0, 0, 0, image.width, image.height, glFormat, glType, image.data );

					} else {

						state.texImage2D( 3553, 0, glInternalFormat, image.width, image.height, 0, glFormat, glType, image.data );

					}

				}

			} else if ( texture.isCompressedTexture ) {

				if ( useTexStorage && allocateMemory ) {

					state.texStorage2D( 3553, levels, glInternalFormat, mipmaps[ 0 ].width, mipmaps[ 0 ].height );

				}

				for ( let i = 0, il = mipmaps.length; i < il; i ++ ) {

					mipmap = mipmaps[ i ];

					if ( texture.format !== RGBAFormat ) {

						if ( glFormat !== null ) {

							if ( useTexStorage ) {

								state.compressedTexSubImage2D( 3553, i, 0, 0, mipmap.width, mipmap.height, glFormat, mipmap.data );

							} else {

								state.compressedTexImage2D( 3553, i, glInternalFormat, mipmap.width, mipmap.height, 0, mipmap.data );

							}

						} else {

							console.warn( 'THREE.WebGLRenderer: Attempt to load unsupported compressed texture format in .uploadTexture()' );

						}

					} else {

						if ( useTexStorage ) {

							state.texSubImage2D( 3553, i, 0, 0, mipmap.width, mipmap.height, glFormat, glType, mipmap.data );

						} else {

							state.texImage2D( 3553, i, glInternalFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data );

						}

					}

				}

			} else if ( texture.isDataArrayTexture ) {

				if ( useTexStorage ) {

					if ( allocateMemory ) {

						state.texStorage3D( 35866, levels, glInternalFormat, image.width, image.height, image.depth );

					}

					state.texSubImage3D( 35866, 0, 0, 0, 0, image.width, image.height, image.depth, glFormat, glType, image.data );

				} else {

					state.texImage3D( 35866, 0, glInternalFormat, image.width, image.height, image.depth, 0, glFormat, glType, image.data );

				}

			} else if ( texture.isData3DTexture ) {

				if ( useTexStorage ) {

					if ( allocateMemory ) {

						state.texStorage3D( 32879, levels, glInternalFormat, image.width, image.height, image.depth );

					}

					state.texSubImage3D( 32879, 0, 0, 0, 0, image.width, image.height, image.depth, glFormat, glType, image.data );

				} else {

					state.texImage3D( 32879, 0, glInternalFormat, image.width, image.height, image.depth, 0, glFormat, glType, image.data );

				}

			} else if ( texture.isFramebufferTexture ) {

				if ( useTexStorage && allocateMemory ) {

					state.texStorage2D( 3553, levels, glInternalFormat, image.width, image.height );

				} else {

					state.texImage2D( 3553, 0, glInternalFormat, image.width, image.height, 0, glFormat, glType, null );

				}

			} else {

				// regular Texture (image, video, canvas)

				// use manually created mipmaps if available
				// if there are no manual mipmaps
				// set 0 level mipmap and then use GL to generate other mipmap levels

				if ( mipmaps.length > 0 && supportsMips ) {

					if ( useTexStorage && allocateMemory ) {

						state.texStorage2D( 3553, levels, glInternalFormat, mipmaps[ 0 ].width, mipmaps[ 0 ].height );

					}

					for ( let i = 0, il = mipmaps.length; i < il; i ++ ) {

						mipmap = mipmaps[ i ];

						if ( useTexStorage ) {

							state.texSubImage2D( 3553, i, 0, 0, glFormat, glType, mipmap );

						} else {

							state.texImage2D( 3553, i, glInternalFormat, glFormat, glType, mipmap );

						}

					}

					texture.generateMipmaps = false;

				} else {

					if ( useTexStorage ) {

						if ( allocateMemory ) {

							state.texStorage2D( 3553, levels, glInternalFormat, image.width, image.height );

						}

						state.texSubImage2D( 3553, 0, 0, 0, glFormat, glType, image );

					} else {

						state.texImage2D( 3553, 0, glInternalFormat, glFormat, glType, image );

					}

				}

			}

			if ( textureNeedsGenerateMipmaps( texture, supportsMips ) ) {

				generateMipmap( textureType );

			}

			source.__currentVersion = source.version;

			if ( texture.onUpdate ) texture.onUpdate( texture );

		}

		textureProperties.__version = texture.version;

	}

	function uploadCubeTexture( textureProperties, texture, slot ) {

		if ( texture.image.length !== 6 ) return;

		const forceUpload = initTexture( textureProperties, texture );
		const source = texture.source;

		state.activeTexture( 33984 + slot );
		state.bindTexture( 34067, textureProperties.__webglTexture );

		if ( source.version !== source.__currentVersion || forceUpload === true ) {

			_gl.pixelStorei( 37440, texture.flipY );
			_gl.pixelStorei( 37441, texture.premultiplyAlpha );
			_gl.pixelStorei( 3317, texture.unpackAlignment );
			_gl.pixelStorei( 37443, 0 );

			const isCompressed = ( texture.isCompressedTexture || texture.image[ 0 ].isCompressedTexture );
			const isDataTexture = ( texture.image[ 0 ] && texture.image[ 0 ].isDataTexture );

			const cubeImage = [];

			for ( let i = 0; i < 6; i ++ ) {

				if ( ! isCompressed && ! isDataTexture ) {

					cubeImage[ i ] = resizeImage( texture.image[ i ], false, true, maxCubemapSize );

				} else {

					cubeImage[ i ] = isDataTexture ? texture.image[ i ].image : texture.image[ i ];

				}

				cubeImage[ i ] = verifyColorSpace( texture, cubeImage[ i ] );

			}

			const image = cubeImage[ 0 ],
				supportsMips = isPowerOfTwo$1( image ) || isWebGL2,
				glFormat = utils.convert( texture.format, texture.encoding ),
				glType = utils.convert( texture.type ),
				glInternalFormat = getInternalFormat( texture.internalFormat, glFormat, glType, texture.encoding );

			const useTexStorage = ( isWebGL2 && texture.isVideoTexture !== true );
			const allocateMemory = ( textureProperties.__version === undefined );
			let levels = getMipLevels( texture, image, supportsMips );

			setTextureParameters( 34067, texture, supportsMips );

			let mipmaps;

			if ( isCompressed ) {

				if ( useTexStorage && allocateMemory ) {

					state.texStorage2D( 34067, levels, glInternalFormat, image.width, image.height );

				}

				for ( let i = 0; i < 6; i ++ ) {

					mipmaps = cubeImage[ i ].mipmaps;

					for ( let j = 0; j < mipmaps.length; j ++ ) {

						const mipmap = mipmaps[ j ];

						if ( texture.format !== RGBAFormat ) {

							if ( glFormat !== null ) {

								if ( useTexStorage ) {

									state.compressedTexSubImage2D( 34069 + i, j, 0, 0, mipmap.width, mipmap.height, glFormat, mipmap.data );

								} else {

									state.compressedTexImage2D( 34069 + i, j, glInternalFormat, mipmap.width, mipmap.height, 0, mipmap.data );

								}

							} else {

								console.warn( 'THREE.WebGLRenderer: Attempt to load unsupported compressed texture format in .setTextureCube()' );

							}

						} else {

							if ( useTexStorage ) {

								state.texSubImage2D( 34069 + i, j, 0, 0, mipmap.width, mipmap.height, glFormat, glType, mipmap.data );

							} else {

								state.texImage2D( 34069 + i, j, glInternalFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data );

							}

						}

					}

				}

			} else {

				mipmaps = texture.mipmaps;

				if ( useTexStorage && allocateMemory ) {

					// TODO: Uniformly handle mipmap definitions
					// Normal textures and compressed cube textures define base level + mips with their mipmap array
					// Uncompressed cube textures use their mipmap array only for mips (no base level)

					if ( mipmaps.length > 0 ) levels ++;

					state.texStorage2D( 34067, levels, glInternalFormat, cubeImage[ 0 ].width, cubeImage[ 0 ].height );

				}

				for ( let i = 0; i < 6; i ++ ) {

					if ( isDataTexture ) {

						if ( useTexStorage ) {

							state.texSubImage2D( 34069 + i, 0, 0, 0, cubeImage[ i ].width, cubeImage[ i ].height, glFormat, glType, cubeImage[ i ].data );

						} else {

							state.texImage2D( 34069 + i, 0, glInternalFormat, cubeImage[ i ].width, cubeImage[ i ].height, 0, glFormat, glType, cubeImage[ i ].data );

						}

						for ( let j = 0; j < mipmaps.length; j ++ ) {

							const mipmap = mipmaps[ j ];
							const mipmapImage = mipmap.image[ i ].image;

							if ( useTexStorage ) {

								state.texSubImage2D( 34069 + i, j + 1, 0, 0, mipmapImage.width, mipmapImage.height, glFormat, glType, mipmapImage.data );

							} else {

								state.texImage2D( 34069 + i, j + 1, glInternalFormat, mipmapImage.width, mipmapImage.height, 0, glFormat, glType, mipmapImage.data );

							}

						}

					} else {

						if ( useTexStorage ) {

							state.texSubImage2D( 34069 + i, 0, 0, 0, glFormat, glType, cubeImage[ i ] );

						} else {

							state.texImage2D( 34069 + i, 0, glInternalFormat, glFormat, glType, cubeImage[ i ] );

						}

						for ( let j = 0; j < mipmaps.length; j ++ ) {

							const mipmap = mipmaps[ j ];

							if ( useTexStorage ) {

								state.texSubImage2D( 34069 + i, j + 1, 0, 0, glFormat, glType, mipmap.image[ i ] );

							} else {

								state.texImage2D( 34069 + i, j + 1, glInternalFormat, glFormat, glType, mipmap.image[ i ] );

							}

						}

					}

				}

			}

			if ( textureNeedsGenerateMipmaps( texture, supportsMips ) ) {

				// We assume images for cube map have the same size.
				generateMipmap( 34067 );

			}

			source.__currentVersion = source.version;

			if ( texture.onUpdate ) texture.onUpdate( texture );

		}

		textureProperties.__version = texture.version;

	}

	// Render targets

	// Setup storage for target texture and bind it to correct framebuffer
	function setupFrameBufferTexture( framebuffer, renderTarget, texture, attachment, textureTarget ) {

		const glFormat = utils.convert( texture.format, texture.encoding );
		const glType = utils.convert( texture.type );
		const glInternalFormat = getInternalFormat( texture.internalFormat, glFormat, glType, texture.encoding );
		const renderTargetProperties = properties.get( renderTarget );

		if ( ! renderTargetProperties.__hasExternalTextures ) {

			if ( textureTarget === 32879 || textureTarget === 35866 ) {

				state.texImage3D( textureTarget, 0, glInternalFormat, renderTarget.width, renderTarget.height, renderTarget.depth, 0, glFormat, glType, null );

			} else {

				state.texImage2D( textureTarget, 0, glInternalFormat, renderTarget.width, renderTarget.height, 0, glFormat, glType, null );

			}

		}

		state.bindFramebuffer( 36160, framebuffer );

		if ( useMultisampledRTT( renderTarget ) ) {

			multisampledRTTExt.framebufferTexture2DMultisampleEXT( 36160, attachment, textureTarget, properties.get( texture ).__webglTexture, 0, getRenderTargetSamples( renderTarget ) );

		} else {

			_gl.framebufferTexture2D( 36160, attachment, textureTarget, properties.get( texture ).__webglTexture, 0 );

		}

		state.bindFramebuffer( 36160, null );

	}


	// Setup storage for internal depth/stencil buffers and bind to correct framebuffer
	function setupRenderBufferStorage( renderbuffer, renderTarget, isMultisample ) {

		_gl.bindRenderbuffer( 36161, renderbuffer );

		if ( renderTarget.depthBuffer && ! renderTarget.stencilBuffer ) {

			let glInternalFormat = 33189;

			if ( isMultisample || useMultisampledRTT( renderTarget ) ) {

				const depthTexture = renderTarget.depthTexture;

				if ( depthTexture && depthTexture.isDepthTexture ) {

					if ( depthTexture.type === FloatType ) {

						glInternalFormat = 36012;

					} else if ( depthTexture.type === UnsignedIntType ) {

						glInternalFormat = 33190;

					}

				}

				const samples = getRenderTargetSamples( renderTarget );

				if ( useMultisampledRTT( renderTarget ) ) {

					multisampledRTTExt.renderbufferStorageMultisampleEXT( 36161, samples, glInternalFormat, renderTarget.width, renderTarget.height );

				} else {

					_gl.renderbufferStorageMultisample( 36161, samples, glInternalFormat, renderTarget.width, renderTarget.height );

				}

			} else {

				_gl.renderbufferStorage( 36161, glInternalFormat, renderTarget.width, renderTarget.height );

			}

			_gl.framebufferRenderbuffer( 36160, 36096, 36161, renderbuffer );

		} else if ( renderTarget.depthBuffer && renderTarget.stencilBuffer ) {

			const samples = getRenderTargetSamples( renderTarget );

			if ( isMultisample && useMultisampledRTT( renderTarget ) === false ) {

				_gl.renderbufferStorageMultisample( 36161, samples, 35056, renderTarget.width, renderTarget.height );

			} else if ( useMultisampledRTT( renderTarget ) ) {

				multisampledRTTExt.renderbufferStorageMultisampleEXT( 36161, samples, 35056, renderTarget.width, renderTarget.height );

			} else {

				_gl.renderbufferStorage( 36161, 34041, renderTarget.width, renderTarget.height );

			}


			_gl.framebufferRenderbuffer( 36160, 33306, 36161, renderbuffer );

		} else {

			// Use the first texture for MRT so far
			const texture = renderTarget.isWebGLMultipleRenderTargets === true ? renderTarget.texture[ 0 ] : renderTarget.texture;

			const glFormat = utils.convert( texture.format, texture.encoding );
			const glType = utils.convert( texture.type );
			const glInternalFormat = getInternalFormat( texture.internalFormat, glFormat, glType, texture.encoding );
			const samples = getRenderTargetSamples( renderTarget );

			if ( isMultisample && useMultisampledRTT( renderTarget ) === false ) {

				_gl.renderbufferStorageMultisample( 36161, samples, glInternalFormat, renderTarget.width, renderTarget.height );

			} else if ( useMultisampledRTT( renderTarget ) ) {

				multisampledRTTExt.renderbufferStorageMultisampleEXT( 36161, samples, glInternalFormat, renderTarget.width, renderTarget.height );

			} else {

				_gl.renderbufferStorage( 36161, glInternalFormat, renderTarget.width, renderTarget.height );

			}

		}

		_gl.bindRenderbuffer( 36161, null );

	}

	// Setup resources for a Depth Texture for a FBO (needs an extension)
	function setupDepthTexture( framebuffer, renderTarget ) {

		const isCube = ( renderTarget && renderTarget.isWebGLCubeRenderTarget );
		if ( isCube ) throw new Error( 'Depth Texture with cube render targets is not supported' );

		state.bindFramebuffer( 36160, framebuffer );

		if ( ! ( renderTarget.depthTexture && renderTarget.depthTexture.isDepthTexture ) ) {

			throw new Error( 'renderTarget.depthTexture must be an instance of THREE.DepthTexture' );

		}

		// upload an empty depth texture with framebuffer size
		if ( ! properties.get( renderTarget.depthTexture ).__webglTexture ||
				renderTarget.depthTexture.image.width !== renderTarget.width ||
				renderTarget.depthTexture.image.height !== renderTarget.height ) {

			renderTarget.depthTexture.image.width = renderTarget.width;
			renderTarget.depthTexture.image.height = renderTarget.height;
			renderTarget.depthTexture.needsUpdate = true;

		}

		setTexture2D( renderTarget.depthTexture, 0 );

		const webglDepthTexture = properties.get( renderTarget.depthTexture ).__webglTexture;
		const samples = getRenderTargetSamples( renderTarget );

		if ( renderTarget.depthTexture.format === DepthFormat ) {

			if ( useMultisampledRTT( renderTarget ) ) {

				multisampledRTTExt.framebufferTexture2DMultisampleEXT( 36160, 36096, 3553, webglDepthTexture, 0, samples );

			} else {

				_gl.framebufferTexture2D( 36160, 36096, 3553, webglDepthTexture, 0 );

			}

		} else if ( renderTarget.depthTexture.format === DepthStencilFormat ) {

			if ( useMultisampledRTT( renderTarget ) ) {

				multisampledRTTExt.framebufferTexture2DMultisampleEXT( 36160, 33306, 3553, webglDepthTexture, 0, samples );

			} else {

				_gl.framebufferTexture2D( 36160, 33306, 3553, webglDepthTexture, 0 );

			}

		} else {

			throw new Error( 'Unknown depthTexture format' );

		}

	}

	// Setup GL resources for a non-texture depth buffer
	function setupDepthRenderbuffer( renderTarget ) {

		const renderTargetProperties = properties.get( renderTarget );
		const isCube = ( renderTarget.isWebGLCubeRenderTarget === true );

		if ( renderTarget.depthTexture && ! renderTargetProperties.__autoAllocateDepthBuffer ) {

			if ( isCube ) throw new Error( 'target.depthTexture not supported in Cube render targets' );

			setupDepthTexture( renderTargetProperties.__webglFramebuffer, renderTarget );

		} else {

			if ( isCube ) {

				renderTargetProperties.__webglDepthbuffer = [];

				for ( let i = 0; i < 6; i ++ ) {

					state.bindFramebuffer( 36160, renderTargetProperties.__webglFramebuffer[ i ] );
					renderTargetProperties.__webglDepthbuffer[ i ] = _gl.createRenderbuffer();
					setupRenderBufferStorage( renderTargetProperties.__webglDepthbuffer[ i ], renderTarget, false );

				}

			} else {

				state.bindFramebuffer( 36160, renderTargetProperties.__webglFramebuffer );
				renderTargetProperties.__webglDepthbuffer = _gl.createRenderbuffer();
				setupRenderBufferStorage( renderTargetProperties.__webglDepthbuffer, renderTarget, false );

			}

		}

		state.bindFramebuffer( 36160, null );

	}

	// rebind framebuffer with external textures
	function rebindTextures( renderTarget, colorTexture, depthTexture ) {

		const renderTargetProperties = properties.get( renderTarget );

		if ( colorTexture !== undefined ) {

			setupFrameBufferTexture( renderTargetProperties.__webglFramebuffer, renderTarget, renderTarget.texture, 36064, 3553 );

		}

		if ( depthTexture !== undefined ) {

			setupDepthRenderbuffer( renderTarget );

		}

	}

	// Set up GL resources for the render target
	function setupRenderTarget( renderTarget ) {

		const texture = renderTarget.texture;

		const renderTargetProperties = properties.get( renderTarget );
		const textureProperties = properties.get( texture );

		renderTarget.addEventListener( 'dispose', onRenderTargetDispose );

		if ( renderTarget.isWebGLMultipleRenderTargets !== true ) {

			if ( textureProperties.__webglTexture === undefined ) {

				textureProperties.__webglTexture = _gl.createTexture();

			}

			textureProperties.__version = texture.version;
			info.memory.textures ++;

		}

		const isCube = ( renderTarget.isWebGLCubeRenderTarget === true );
		const isMultipleRenderTargets = ( renderTarget.isWebGLMultipleRenderTargets === true );
		const supportsMips = isPowerOfTwo$1( renderTarget ) || isWebGL2;

		// Setup framebuffer

		if ( isCube ) {

			renderTargetProperties.__webglFramebuffer = [];

			for ( let i = 0; i < 6; i ++ ) {

				renderTargetProperties.__webglFramebuffer[ i ] = _gl.createFramebuffer();

			}

		} else {

			renderTargetProperties.__webglFramebuffer = _gl.createFramebuffer();

			if ( isMultipleRenderTargets ) {

				if ( capabilities.drawBuffers ) {

					const textures = renderTarget.texture;

					for ( let i = 0, il = textures.length; i < il; i ++ ) {

						const attachmentProperties = properties.get( textures[ i ] );

						if ( attachmentProperties.__webglTexture === undefined ) {

							attachmentProperties.__webglTexture = _gl.createTexture();

							info.memory.textures ++;

						}

					}

				} else {

					console.warn( 'THREE.WebGLRenderer: WebGLMultipleRenderTargets can only be used with WebGL2 or WEBGL_draw_buffers extension.' );

				}

			} else if ( ( isWebGL2 && renderTarget.samples > 0 ) && useMultisampledRTT( renderTarget ) === false ) {

				renderTargetProperties.__webglMultisampledFramebuffer = _gl.createFramebuffer();
				renderTargetProperties.__webglColorRenderbuffer = _gl.createRenderbuffer();

				_gl.bindRenderbuffer( 36161, renderTargetProperties.__webglColorRenderbuffer );

				const glFormat = utils.convert( texture.format, texture.encoding );
				const glType = utils.convert( texture.type );
				const glInternalFormat = getInternalFormat( texture.internalFormat, glFormat, glType, texture.encoding );
				const samples = getRenderTargetSamples( renderTarget );
				_gl.renderbufferStorageMultisample( 36161, samples, glInternalFormat, renderTarget.width, renderTarget.height );

				state.bindFramebuffer( 36160, renderTargetProperties.__webglMultisampledFramebuffer );
				_gl.framebufferRenderbuffer( 36160, 36064, 36161, renderTargetProperties.__webglColorRenderbuffer );
				_gl.bindRenderbuffer( 36161, null );

				if ( renderTarget.depthBuffer ) {

					renderTargetProperties.__webglDepthRenderbuffer = _gl.createRenderbuffer();
					setupRenderBufferStorage( renderTargetProperties.__webglDepthRenderbuffer, renderTarget, true );

				}

				state.bindFramebuffer( 36160, null );

			}

		}

		// Setup color buffer

		if ( isCube ) {

			state.bindTexture( 34067, textureProperties.__webglTexture );
			setTextureParameters( 34067, texture, supportsMips );

			for ( let i = 0; i < 6; i ++ ) {

				setupFrameBufferTexture( renderTargetProperties.__webglFramebuffer[ i ], renderTarget, texture, 36064, 34069 + i );

			}

			if ( textureNeedsGenerateMipmaps( texture, supportsMips ) ) {

				generateMipmap( 34067 );

			}

			state.unbindTexture();

		} else if ( isMultipleRenderTargets ) {

			const textures = renderTarget.texture;

			for ( let i = 0, il = textures.length; i < il; i ++ ) {

				const attachment = textures[ i ];
				const attachmentProperties = properties.get( attachment );

				state.bindTexture( 3553, attachmentProperties.__webglTexture );
				setTextureParameters( 3553, attachment, supportsMips );
				setupFrameBufferTexture( renderTargetProperties.__webglFramebuffer, renderTarget, attachment, 36064 + i, 3553 );

				if ( textureNeedsGenerateMipmaps( attachment, supportsMips ) ) {

					generateMipmap( 3553 );

				}

			}

			state.unbindTexture();

		} else {

			let glTextureType = 3553;

			if ( renderTarget.isWebGL3DRenderTarget || renderTarget.isWebGLArrayRenderTarget ) {

				if ( isWebGL2 ) {

					glTextureType = renderTarget.isWebGL3DRenderTarget ? 32879 : 35866;

				} else {

					console.error( 'THREE.WebGLTextures: THREE.Data3DTexture and THREE.DataArrayTexture only supported with WebGL2.' );

				}

			}

			state.bindTexture( glTextureType, textureProperties.__webglTexture );
			setTextureParameters( glTextureType, texture, supportsMips );
			setupFrameBufferTexture( renderTargetProperties.__webglFramebuffer, renderTarget, texture, 36064, glTextureType );

			if ( textureNeedsGenerateMipmaps( texture, supportsMips ) ) {

				generateMipmap( glTextureType );

			}

			state.unbindTexture();

		}

		// Setup depth and stencil buffers

		if ( renderTarget.depthBuffer ) {

			setupDepthRenderbuffer( renderTarget );

		}

	}

	function updateRenderTargetMipmap( renderTarget ) {

		const supportsMips = isPowerOfTwo$1( renderTarget ) || isWebGL2;

		const textures = renderTarget.isWebGLMultipleRenderTargets === true ? renderTarget.texture : [ renderTarget.texture ];

		for ( let i = 0, il = textures.length; i < il; i ++ ) {

			const texture = textures[ i ];

			if ( textureNeedsGenerateMipmaps( texture, supportsMips ) ) {

				const target = renderTarget.isWebGLCubeRenderTarget ? 34067 : 3553;
				const webglTexture = properties.get( texture ).__webglTexture;

				state.bindTexture( target, webglTexture );
				generateMipmap( target );
				state.unbindTexture();

			}

		}

	}

	function updateMultisampleRenderTarget( renderTarget ) {

		if ( ( isWebGL2 && renderTarget.samples > 0 ) && useMultisampledRTT( renderTarget ) === false ) {

			const width = renderTarget.width;
			const height = renderTarget.height;
			let mask = 16384;
			const invalidationArray = [ 36064 ];
			const depthStyle = renderTarget.stencilBuffer ? 33306 : 36096;

			if ( renderTarget.depthBuffer ) {

				invalidationArray.push( depthStyle );

			}

			const renderTargetProperties = properties.get( renderTarget );
			const ignoreDepthValues = ( renderTargetProperties.__ignoreDepthValues !== undefined ) ? renderTargetProperties.__ignoreDepthValues : false;

			if ( ignoreDepthValues === false ) {

				if ( renderTarget.depthBuffer ) mask |= 256;
				if ( renderTarget.stencilBuffer ) mask |= 1024;

			}

			state.bindFramebuffer( 36008, renderTargetProperties.__webglMultisampledFramebuffer );
			state.bindFramebuffer( 36009, renderTargetProperties.__webglFramebuffer );

			if ( ignoreDepthValues === true ) {

				_gl.invalidateFramebuffer( 36008, [ depthStyle ] );
				_gl.invalidateFramebuffer( 36009, [ depthStyle ] );

			}

			_gl.blitFramebuffer( 0, 0, width, height, 0, 0, width, height, mask, 9728 );
			_gl.invalidateFramebuffer( 36008, invalidationArray );

			state.bindFramebuffer( 36008, null );
			state.bindFramebuffer( 36009, renderTargetProperties.__webglMultisampledFramebuffer );

		}

	}

	function getRenderTargetSamples( renderTarget ) {

		return Math.min( maxSamples, renderTarget.samples );

	}

	function useMultisampledRTT( renderTarget ) {

		const renderTargetProperties = properties.get( renderTarget );

		return isWebGL2 && renderTarget.samples > 0 && extensions.has( 'WEBGL_multisampled_render_to_texture' ) === true && renderTargetProperties.__useRenderToTexture !== false;

	}

	function updateVideoTexture( texture ) {

		const frame = info.render.frame;

		// Check the last frame we updated the VideoTexture

		if ( _videoTextures.get( texture ) !== frame ) {

			_videoTextures.set( texture, frame );
			texture.update();

		}

	}

	function verifyColorSpace( texture, image ) {

		const encoding = texture.encoding;
		const format = texture.format;
		const type = texture.type;

		if ( texture.isCompressedTexture === true || texture.isVideoTexture === true || texture.format === _SRGBAFormat ) return image;

		if ( encoding !== LinearEncoding ) {

			// sRGB

			if ( encoding === sRGBEncoding ) {

				if ( isWebGL2 === false ) {

					// in WebGL 1, try to use EXT_sRGB extension and unsized formats

					if ( extensions.has( 'EXT_sRGB' ) === true && format === RGBAFormat ) {

						texture.format = _SRGBAFormat;

						// it's not possible to generate mips in WebGL 1 with this extension

						texture.minFilter = LinearFilter;
						texture.generateMipmaps = false;

					} else {

						// slow fallback (CPU decode)

						image = ImageUtils.sRGBToLinear( image );

					}

				} else {

					// in WebGL 2 uncompressed textures can only be sRGB encoded if they have the RGBA8 format

					if ( format !== RGBAFormat || type !== UnsignedByteType ) {

						console.warn( 'THREE.WebGLTextures: sRGB encoded textures have to use RGBAFormat and UnsignedByteType.' );

					}

				}

			} else {

				console.error( 'THREE.WebGLTextures: Unsupported texture encoding:', encoding );

			}

		}

		return image;

	}

	//

	this.allocateTextureUnit = allocateTextureUnit;
	this.resetTextureUnits = resetTextureUnits;

	this.setTexture2D = setTexture2D;
	this.setTexture2DArray = setTexture2DArray;
	this.setTexture3D = setTexture3D;
	this.setTextureCube = setTextureCube;
	this.rebindTextures = rebindTextures;
	this.setupRenderTarget = setupRenderTarget;
	this.updateRenderTargetMipmap = updateRenderTargetMipmap;
	this.updateMultisampleRenderTarget = updateMultisampleRenderTarget;
	this.setupDepthRenderbuffer = setupDepthRenderbuffer;
	this.setupFrameBufferTexture = setupFrameBufferTexture;
	this.useMultisampledRTT = useMultisampledRTT;

}

function WebGLUtils( gl, extensions, capabilities ) {

	const isWebGL2 = capabilities.isWebGL2;

	function convert( p, encoding = null ) {

		let extension;

		if ( p === UnsignedByteType ) return 5121;
		if ( p === UnsignedShort4444Type ) return 32819;
		if ( p === UnsignedShort5551Type ) return 32820;

		if ( p === ByteType ) return 5120;
		if ( p === ShortType ) return 5122;
		if ( p === UnsignedShortType ) return 5123;
		if ( p === IntType ) return 5124;
		if ( p === UnsignedIntType ) return 5125;
		if ( p === FloatType ) return 5126;

		if ( p === HalfFloatType ) {

			if ( isWebGL2 ) return 5131;

			extension = extensions.get( 'OES_texture_half_float' );

			if ( extension !== null ) {

				return extension.HALF_FLOAT_OES;

			} else {

				return null;

			}

		}

		if ( p === AlphaFormat ) return 6406;
		if ( p === RGBAFormat ) return 6408;
		if ( p === LuminanceFormat ) return 6409;
		if ( p === LuminanceAlphaFormat ) return 6410;
		if ( p === DepthFormat ) return 6402;
		if ( p === DepthStencilFormat ) return 34041;
		if ( p === RedFormat ) return 6403;

		if ( p === RGBFormat ) {

			console.warn( 'THREE.WebGLRenderer: THREE.RGBFormat has been removed. Use THREE.RGBAFormat instead. https://github.com/mrdoob/three.js/pull/23228' );
			return 6408;

		}

		// WebGL 1 sRGB fallback

		if ( p === _SRGBAFormat ) {

			extension = extensions.get( 'EXT_sRGB' );

			if ( extension !== null ) {

				return extension.SRGB_ALPHA_EXT;

			} else {

				return null;

			}

		}

		// WebGL2 formats.

		if ( p === RedIntegerFormat ) return 36244;
		if ( p === RGFormat ) return 33319;
		if ( p === RGIntegerFormat ) return 33320;
		if ( p === RGBAIntegerFormat ) return 36249;

		// S3TC

		if ( p === RGB_S3TC_DXT1_Format || p === RGBA_S3TC_DXT1_Format || p === RGBA_S3TC_DXT3_Format || p === RGBA_S3TC_DXT5_Format ) {

			if ( encoding === sRGBEncoding ) {

				extension = extensions.get( 'WEBGL_compressed_texture_s3tc_srgb' );

				if ( extension !== null ) {

					if ( p === RGB_S3TC_DXT1_Format ) return extension.COMPRESSED_SRGB_S3TC_DXT1_EXT;
					if ( p === RGBA_S3TC_DXT1_Format ) return extension.COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT;
					if ( p === RGBA_S3TC_DXT3_Format ) return extension.COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT;
					if ( p === RGBA_S3TC_DXT5_Format ) return extension.COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT;

				} else {

					return null;

				}

			} else {

				extension = extensions.get( 'WEBGL_compressed_texture_s3tc' );

				if ( extension !== null ) {

					if ( p === RGB_S3TC_DXT1_Format ) return extension.COMPRESSED_RGB_S3TC_DXT1_EXT;
					if ( p === RGBA_S3TC_DXT1_Format ) return extension.COMPRESSED_RGBA_S3TC_DXT1_EXT;
					if ( p === RGBA_S3TC_DXT3_Format ) return extension.COMPRESSED_RGBA_S3TC_DXT3_EXT;
					if ( p === RGBA_S3TC_DXT5_Format ) return extension.COMPRESSED_RGBA_S3TC_DXT5_EXT;

				} else {

					return null;

				}

			}

		}

		// PVRTC

		if ( p === RGB_PVRTC_4BPPV1_Format || p === RGB_PVRTC_2BPPV1_Format || p === RGBA_PVRTC_4BPPV1_Format || p === RGBA_PVRTC_2BPPV1_Format ) {

			extension = extensions.get( 'WEBGL_compressed_texture_pvrtc' );

			if ( extension !== null ) {

				if ( p === RGB_PVRTC_4BPPV1_Format ) return extension.COMPRESSED_RGB_PVRTC_4BPPV1_IMG;
				if ( p === RGB_PVRTC_2BPPV1_Format ) return extension.COMPRESSED_RGB_PVRTC_2BPPV1_IMG;
				if ( p === RGBA_PVRTC_4BPPV1_Format ) return extension.COMPRESSED_RGBA_PVRTC_4BPPV1_IMG;
				if ( p === RGBA_PVRTC_2BPPV1_Format ) return extension.COMPRESSED_RGBA_PVRTC_2BPPV1_IMG;

			} else {

				return null;

			}

		}

		// ETC1

		if ( p === RGB_ETC1_Format ) {

			extension = extensions.get( 'WEBGL_compressed_texture_etc1' );

			if ( extension !== null ) {

				return extension.COMPRESSED_RGB_ETC1_WEBGL;

			} else {

				return null;

			}

		}

		// ETC2

		if ( p === RGB_ETC2_Format || p === RGBA_ETC2_EAC_Format ) {

			extension = extensions.get( 'WEBGL_compressed_texture_etc' );

			if ( extension !== null ) {

				if ( p === RGB_ETC2_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ETC2 : extension.COMPRESSED_RGB8_ETC2;
				if ( p === RGBA_ETC2_EAC_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ALPHA8_ETC2_EAC : extension.COMPRESSED_RGBA8_ETC2_EAC;

			} else {

				return null;

			}

		}

		// ASTC

		if ( p === RGBA_ASTC_4x4_Format || p === RGBA_ASTC_5x4_Format || p === RGBA_ASTC_5x5_Format ||
			p === RGBA_ASTC_6x5_Format || p === RGBA_ASTC_6x6_Format || p === RGBA_ASTC_8x5_Format ||
			p === RGBA_ASTC_8x6_Format || p === RGBA_ASTC_8x8_Format || p === RGBA_ASTC_10x5_Format ||
			p === RGBA_ASTC_10x6_Format || p === RGBA_ASTC_10x8_Format || p === RGBA_ASTC_10x10_Format ||
			p === RGBA_ASTC_12x10_Format || p === RGBA_ASTC_12x12_Format ) {

			extension = extensions.get( 'WEBGL_compressed_texture_astc' );

			if ( extension !== null ) {

				if ( p === RGBA_ASTC_4x4_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR : extension.COMPRESSED_RGBA_ASTC_4x4_KHR;
				if ( p === RGBA_ASTC_5x4_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR : extension.COMPRESSED_RGBA_ASTC_5x4_KHR;
				if ( p === RGBA_ASTC_5x5_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR : extension.COMPRESSED_RGBA_ASTC_5x5_KHR;
				if ( p === RGBA_ASTC_6x5_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR : extension.COMPRESSED_RGBA_ASTC_6x5_KHR;
				if ( p === RGBA_ASTC_6x6_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR : extension.COMPRESSED_RGBA_ASTC_6x6_KHR;
				if ( p === RGBA_ASTC_8x5_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR : extension.COMPRESSED_RGBA_ASTC_8x5_KHR;
				if ( p === RGBA_ASTC_8x6_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR : extension.COMPRESSED_RGBA_ASTC_8x6_KHR;
				if ( p === RGBA_ASTC_8x8_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR : extension.COMPRESSED_RGBA_ASTC_8x8_KHR;
				if ( p === RGBA_ASTC_10x5_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR : extension.COMPRESSED_RGBA_ASTC_10x5_KHR;
				if ( p === RGBA_ASTC_10x6_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR : extension.COMPRESSED_RGBA_ASTC_10x6_KHR;
				if ( p === RGBA_ASTC_10x8_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR : extension.COMPRESSED_RGBA_ASTC_10x8_KHR;
				if ( p === RGBA_ASTC_10x10_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR : extension.COMPRESSED_RGBA_ASTC_10x10_KHR;
				if ( p === RGBA_ASTC_12x10_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR : extension.COMPRESSED_RGBA_ASTC_12x10_KHR;
				if ( p === RGBA_ASTC_12x12_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR : extension.COMPRESSED_RGBA_ASTC_12x12_KHR;

			} else {

				return null;

			}

		}

		// BPTC

		if ( p === RGBA_BPTC_Format ) {

			extension = extensions.get( 'EXT_texture_compression_bptc' );

			if ( extension !== null ) {

				if ( p === RGBA_BPTC_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB_ALPHA_BPTC_UNORM_EXT : extension.COMPRESSED_RGBA_BPTC_UNORM_EXT;

			} else {

				return null;

			}

		}

		//

		if ( p === UnsignedInt248Type ) {

			if ( isWebGL2 ) return 34042;

			extension = extensions.get( 'WEBGL_depth_texture' );

			if ( extension !== null ) {

				return extension.UNSIGNED_INT_24_8_WEBGL;

			} else {

				return null;

			}

		}

	}

	return { convert: convert };

}

class ArrayCamera extends PerspectiveCamera {

	constructor( array = [] ) {

		super();

		this.cameras = array;

	}

}

ArrayCamera.prototype.isArrayCamera = true;

class Group extends Object3D {

	constructor() {

		super();

		this.type = 'Group';

	}

}

Group.prototype.isGroup = true;

const _moveEvent = { type: 'move' };

class WebXRController {

	constructor() {

		this._targetRay = null;
		this._grip = null;
		this._hand = null;

	}

	getHandSpace() {

		if ( this._hand === null ) {

			this._hand = new Group();
			this._hand.matrixAutoUpdate = false;
			this._hand.visible = false;

			this._hand.joints = {};
			this._hand.inputState = { pinching: false };

		}

		return this._hand;

	}

	getTargetRaySpace() {

		if ( this._targetRay === null ) {

			this._targetRay = new Group();
			this._targetRay.matrixAutoUpdate = false;
			this._targetRay.visible = false;
			this._targetRay.hasLinearVelocity = false;
			this._targetRay.linearVelocity = new Vector3();
			this._targetRay.hasAngularVelocity = false;
			this._targetRay.angularVelocity = new Vector3();

		}

		return this._targetRay;

	}

	getGripSpace() {

		if ( this._grip === null ) {

			this._grip = new Group();
			this._grip.matrixAutoUpdate = false;
			this._grip.visible = false;
			this._grip.hasLinearVelocity = false;
			this._grip.linearVelocity = new Vector3();
			this._grip.hasAngularVelocity = false;
			this._grip.angularVelocity = new Vector3();

		}

		return this._grip;

	}

	dispatchEvent( event ) {

		if ( this._targetRay !== null ) {

			this._targetRay.dispatchEvent( event );

		}

		if ( this._grip !== null ) {

			this._grip.dispatchEvent( event );

		}

		if ( this._hand !== null ) {

			this._hand.dispatchEvent( event );

		}

		return this;

	}

	disconnect( inputSource ) {

		this.dispatchEvent( { type: 'disconnected', data: inputSource } );

		if ( this._targetRay !== null ) {

			this._targetRay.visible = false;

		}

		if ( this._grip !== null ) {

			this._grip.visible = false;

		}

		if ( this._hand !== null ) {

			this._hand.visible = false;

		}

		return this;

	}

	update( inputSource, frame, referenceSpace ) {

		let inputPose = null;
		let gripPose = null;
		let handPose = null;

		const targetRay = this._targetRay;
		const grip = this._grip;
		const hand = this._hand;

		if ( inputSource && frame.session.visibilityState !== 'visible-blurred' ) {

			if ( targetRay !== null ) {

				inputPose = frame.getPose( inputSource.targetRaySpace, referenceSpace );

				if ( inputPose !== null ) {

					targetRay.matrix.fromArray( inputPose.transform.matrix );
					targetRay.matrix.decompose( targetRay.position, targetRay.rotation, targetRay.scale );

					if ( inputPose.linearVelocity ) {

						targetRay.hasLinearVelocity = true;
						targetRay.linearVelocity.copy( inputPose.linearVelocity );

					} else {

						targetRay.hasLinearVelocity = false;

					}

					if ( inputPose.angularVelocity ) {

						targetRay.hasAngularVelocity = true;
						targetRay.angularVelocity.copy( inputPose.angularVelocity );

					} else {

						targetRay.hasAngularVelocity = false;

					}

					this.dispatchEvent( _moveEvent );

				}

			}

			if ( hand && inputSource.hand ) {

				handPose = true;

				for ( const inputjoint of inputSource.hand.values() ) {

					// Update the joints groups with the XRJoint poses
					const jointPose = frame.getJointPose( inputjoint, referenceSpace );

					if ( hand.joints[ inputjoint.jointName ] === undefined ) {

						// The transform of this joint will be updated with the joint pose on each frame
						const joint = new Group();
						joint.matrixAutoUpdate = false;
						joint.visible = false;
						hand.joints[ inputjoint.jointName ] = joint;
						// ??
						hand.add( joint );

					}

					const joint = hand.joints[ inputjoint.jointName ];

					if ( jointPose !== null ) {

						joint.matrix.fromArray( jointPose.transform.matrix );
						joint.matrix.decompose( joint.position, joint.rotation, joint.scale );
						joint.jointRadius = jointPose.radius;

					}

					joint.visible = jointPose !== null;

				}

				// Custom events

				// Check pinchz
				const indexTip = hand.joints[ 'index-finger-tip' ];
				const thumbTip = hand.joints[ 'thumb-tip' ];
				const distance = indexTip.position.distanceTo( thumbTip.position );

				const distanceToPinch = 0.02;
				const threshold = 0.005;

				if ( hand.inputState.pinching && distance > distanceToPinch + threshold ) {

					hand.inputState.pinching = false;
					this.dispatchEvent( {
						type: 'pinchend',
						handedness: inputSource.handedness,
						target: this
					} );

				} else if ( ! hand.inputState.pinching && distance <= distanceToPinch - threshold ) {

					hand.inputState.pinching = true;
					this.dispatchEvent( {
						type: 'pinchstart',
						handedness: inputSource.handedness,
						target: this
					} );

				}

			} else {

				if ( grip !== null && inputSource.gripSpace ) {

					gripPose = frame.getPose( inputSource.gripSpace, referenceSpace );

					if ( gripPose !== null ) {

						grip.matrix.fromArray( gripPose.transform.matrix );
						grip.matrix.decompose( grip.position, grip.rotation, grip.scale );

						if ( gripPose.linearVelocity ) {

							grip.hasLinearVelocity = true;
							grip.linearVelocity.copy( gripPose.linearVelocity );

						} else {

							grip.hasLinearVelocity = false;

						}

						if ( gripPose.angularVelocity ) {

							grip.hasAngularVelocity = true;
							grip.angularVelocity.copy( gripPose.angularVelocity );

						} else {

							grip.hasAngularVelocity = false;

						}

					}

				}

			}

		}

		if ( targetRay !== null ) {

			targetRay.visible = ( inputPose !== null );

		}

		if ( grip !== null ) {

			grip.visible = ( gripPose !== null );

		}

		if ( hand !== null ) {

			hand.visible = ( handPose !== null );

		}

		return this;

	}

}

class DepthTexture extends Texture {

	constructor( width, height, type, mapping, wrapS, wrapT, magFilter, minFilter, anisotropy, format ) {

		format = format !== undefined ? format : DepthFormat;

		if ( format !== DepthFormat && format !== DepthStencilFormat ) {

			throw new Error( 'DepthTexture format must be either THREE.DepthFormat or THREE.DepthStencilFormat' );

		}

		if ( type === undefined && format === DepthFormat ) type = UnsignedShortType;
		if ( type === undefined && format === DepthStencilFormat ) type = UnsignedInt248Type;

		super( null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy );

		this.image = { width: width, height: height };

		this.magFilter = magFilter !== undefined ? magFilter : NearestFilter;
		this.minFilter = minFilter !== undefined ? minFilter : NearestFilter;

		this.flipY = false;
		this.generateMipmaps	= false;

	}


}

DepthTexture.prototype.isDepthTexture = true;

class WebXRManager extends EventDispatcher {

	constructor( renderer, gl ) {

		super();

		const scope = this;

		let session = null;
		let framebufferScaleFactor = 1.0;

		let referenceSpace = null;
		let referenceSpaceType = 'local-floor';

		let pose = null;
		let glBinding = null;
		let glProjLayer = null;
		let glBaseLayer = null;
		let xrFrame = null;
		const attributes = gl.getContextAttributes();
		let initialRenderTarget = null;
		let newRenderTarget = null;

		const controllers = [];
		const inputSourcesMap = new Map();

		//

		const cameraL = new PerspectiveCamera();
		cameraL.layers.enable( 1 );
		cameraL.viewport = new Vector4$1();

		const cameraR = new PerspectiveCamera();
		cameraR.layers.enable( 2 );
		cameraR.viewport = new Vector4$1();

		const cameras = [ cameraL, cameraR ];

		const cameraVR = new ArrayCamera();
		cameraVR.layers.enable( 1 );
		cameraVR.layers.enable( 2 );

		let _currentDepthNear = null;
		let _currentDepthFar = null;

		//

		this.cameraAutoUpdate = true;
		this.enabled = false;

		this.isPresenting = false;

		this.getController = function ( index ) {

			let controller = controllers[ index ];

			if ( controller === undefined ) {

				controller = new WebXRController();
				controllers[ index ] = controller;

			}

			return controller.getTargetRaySpace();

		};

		this.getControllerGrip = function ( index ) {

			let controller = controllers[ index ];

			if ( controller === undefined ) {

				controller = new WebXRController();
				controllers[ index ] = controller;

			}

			return controller.getGripSpace();

		};

		this.getHand = function ( index ) {

			let controller = controllers[ index ];

			if ( controller === undefined ) {

				controller = new WebXRController();
				controllers[ index ] = controller;

			}

			return controller.getHandSpace();

		};

		//

		function onSessionEvent( event ) {

			const controller = inputSourcesMap.get( event.inputSource );

			if ( controller ) {

				controller.dispatchEvent( { type: event.type, data: event.inputSource } );

			}

		}

		function onSessionEnd() {

			inputSourcesMap.forEach( function ( controller, inputSource ) {

				controller.disconnect( inputSource );

			} );

			inputSourcesMap.clear();

			_currentDepthNear = null;
			_currentDepthFar = null;

			// restore framebuffer/rendering state

			renderer.setRenderTarget( initialRenderTarget );

			glBaseLayer = null;
			glProjLayer = null;
			glBinding = null;
			session = null;
			newRenderTarget = null;

			//

			animation.stop();

			scope.isPresenting = false;

			scope.dispatchEvent( { type: 'sessionend' } );

		}

		this.setFramebufferScaleFactor = function ( value ) {

			framebufferScaleFactor = value;

			if ( scope.isPresenting === true ) {

				console.warn( 'THREE.WebXRManager: Cannot change framebuffer scale while presenting.' );

			}

		};

		this.setReferenceSpaceType = function ( value ) {

			referenceSpaceType = value;

			if ( scope.isPresenting === true ) {

				console.warn( 'THREE.WebXRManager: Cannot change reference space type while presenting.' );

			}

		};

		this.getReferenceSpace = function () {

			return referenceSpace;

		};

		this.getBaseLayer = function () {

			return glProjLayer !== null ? glProjLayer : glBaseLayer;

		};

		this.getBinding = function () {

			return glBinding;

		};

		this.getFrame = function () {

			return xrFrame;

		};

		this.getSession = function () {

			return session;

		};

		this.setSession = async function ( value ) {

			session = value;

			if ( session !== null ) {

				initialRenderTarget = renderer.getRenderTarget();

				session.addEventListener( 'select', onSessionEvent );
				session.addEventListener( 'selectstart', onSessionEvent );
				session.addEventListener( 'selectend', onSessionEvent );
				session.addEventListener( 'squeeze', onSessionEvent );
				session.addEventListener( 'squeezestart', onSessionEvent );
				session.addEventListener( 'squeezeend', onSessionEvent );
				session.addEventListener( 'end', onSessionEnd );
				session.addEventListener( 'inputsourceschange', onInputSourcesChange );

				if ( attributes.xrCompatible !== true ) {

					await gl.makeXRCompatible();

				}

				if ( ( session.renderState.layers === undefined ) || ( renderer.capabilities.isWebGL2 === false ) ) {

					const layerInit = {
						antialias: ( session.renderState.layers === undefined ) ? attributes.antialias : true,
						alpha: attributes.alpha,
						depth: attributes.depth,
						stencil: attributes.stencil,
						framebufferScaleFactor: framebufferScaleFactor
					};

					glBaseLayer = new XRWebGLLayer( session, gl, layerInit );

					session.updateRenderState( { baseLayer: glBaseLayer } );

					newRenderTarget = new WebGLRenderTarget(
						glBaseLayer.framebufferWidth,
						glBaseLayer.framebufferHeight,
						{
							format: RGBAFormat,
							type: UnsignedByteType,
							encoding: renderer.outputEncoding
						}
					);

				} else {

					let depthFormat = null;
					let depthType = null;
					let glDepthFormat = null;

					if ( attributes.depth ) {

						glDepthFormat = attributes.stencil ? 35056 : 33190;
						depthFormat = attributes.stencil ? DepthStencilFormat : DepthFormat;
						depthType = attributes.stencil ? UnsignedInt248Type : UnsignedShortType;

					}

					const projectionlayerInit = {
						colorFormat: ( renderer.outputEncoding === sRGBEncoding ) ? 35907 : 32856,
						depthFormat: glDepthFormat,
						scaleFactor: framebufferScaleFactor
					};

					glBinding = new XRWebGLBinding( session, gl );

					glProjLayer = glBinding.createProjectionLayer( projectionlayerInit );

					session.updateRenderState( { layers: [ glProjLayer ] } );

					newRenderTarget = new WebGLRenderTarget(
						glProjLayer.textureWidth,
						glProjLayer.textureHeight,
						{
							format: RGBAFormat,
							type: UnsignedByteType,
							depthTexture: new DepthTexture( glProjLayer.textureWidth, glProjLayer.textureHeight, depthType, undefined, undefined, undefined, undefined, undefined, undefined, depthFormat ),
							stencilBuffer: attributes.stencil,
							encoding: renderer.outputEncoding,
							samples: attributes.antialias ? 4 : 0
						} );

					const renderTargetProperties = renderer.properties.get( newRenderTarget );
					renderTargetProperties.__ignoreDepthValues = glProjLayer.ignoreDepthValues;

				}

				newRenderTarget.isXRRenderTarget = true; // TODO Remove this when possible, see #23278

				// Set foveation to maximum.
				this.setFoveation( 1.0 );

				referenceSpace = await session.requestReferenceSpace( referenceSpaceType );

				animation.setContext( session );
				animation.start();

				scope.isPresenting = true;

				scope.dispatchEvent( { type: 'sessionstart' } );

			}

		};

		function onInputSourcesChange( event ) {

			const inputSources = session.inputSources;

			// Assign inputSources to available controllers

			for ( let i = 0; i < controllers.length; i ++ ) {

				inputSourcesMap.set( inputSources[ i ], controllers[ i ] );

			}

			// Notify disconnected

			for ( let i = 0; i < event.removed.length; i ++ ) {

				const inputSource = event.removed[ i ];
				const controller = inputSourcesMap.get( inputSource );

				if ( controller ) {

					controller.dispatchEvent( { type: 'disconnected', data: inputSource } );
					inputSourcesMap.delete( inputSource );

				}

			}

			// Notify connected

			for ( let i = 0; i < event.added.length; i ++ ) {

				const inputSource = event.added[ i ];
				const controller = inputSourcesMap.get( inputSource );

				if ( controller ) {

					controller.dispatchEvent( { type: 'connected', data: inputSource } );

				}

			}

		}

		//

		const cameraLPos = new Vector3();
		const cameraRPos = new Vector3();

		/**
		 * Assumes 2 cameras that are parallel and share an X-axis, and that
		 * the cameras' projection and world matrices have already been set.
		 * And that near and far planes are identical for both cameras.
		 * Visualization of this technique: https://computergraphics.stackexchange.com/a/4765
		 */
		function setProjectionFromUnion( camera, cameraL, cameraR ) {

			cameraLPos.setFromMatrixPosition( cameraL.matrixWorld );
			cameraRPos.setFromMatrixPosition( cameraR.matrixWorld );

			const ipd = cameraLPos.distanceTo( cameraRPos );

			const projL = cameraL.projectionMatrix.elements;
			const projR = cameraR.projectionMatrix.elements;

			// VR systems will have identical far and near planes, and
			// most likely identical top and bottom frustum extents.
			// Use the left camera for these values.
			const near = projL[ 14 ] / ( projL[ 10 ] - 1 );
			const far = projL[ 14 ] / ( projL[ 10 ] + 1 );
			const topFov = ( projL[ 9 ] + 1 ) / projL[ 5 ];
			const bottomFov = ( projL[ 9 ] - 1 ) / projL[ 5 ];

			const leftFov = ( projL[ 8 ] - 1 ) / projL[ 0 ];
			const rightFov = ( projR[ 8 ] + 1 ) / projR[ 0 ];
			const left = near * leftFov;
			const right = near * rightFov;

			// Calculate the new camera's position offset from the
			// left camera. xOffset should be roughly half `ipd`.
			const zOffset = ipd / ( - leftFov + rightFov );
			const xOffset = zOffset * - leftFov;

			// TODO: Better way to apply this offset?
			cameraL.matrixWorld.decompose( camera.position, camera.quaternion, camera.scale );
			camera.translateX( xOffset );
			camera.translateZ( zOffset );
			camera.matrixWorld.compose( camera.position, camera.quaternion, camera.scale );
			camera.matrixWorldInverse.copy( camera.matrixWorld ).invert();

			// Find the union of the frustum values of the cameras and scale
			// the values so that the near plane's position does not change in world space,
			// although must now be relative to the new union camera.
			const near2 = near + zOffset;
			const far2 = far + zOffset;
			const left2 = left - xOffset;
			const right2 = right + ( ipd - xOffset );
			const top2 = topFov * far / far2 * near2;
			const bottom2 = bottomFov * far / far2 * near2;

			camera.projectionMatrix.makePerspective( left2, right2, top2, bottom2, near2, far2 );

		}

		function updateCamera( camera, parent ) {

			if ( parent === null ) {

				camera.matrixWorld.copy( camera.matrix );

			} else {

				camera.matrixWorld.multiplyMatrices( parent.matrixWorld, camera.matrix );

			}

			camera.matrixWorldInverse.copy( camera.matrixWorld ).invert();

		}

		this.updateCamera = function ( camera ) {

			if ( session === null ) return;

			cameraVR.near = cameraR.near = cameraL.near = camera.near;
			cameraVR.far = cameraR.far = cameraL.far = camera.far;

			if ( _currentDepthNear !== cameraVR.near || _currentDepthFar !== cameraVR.far ) {

				// Note that the new renderState won't apply until the next frame. See #18320

				session.updateRenderState( {
					depthNear: cameraVR.near,
					depthFar: cameraVR.far
				} );

				_currentDepthNear = cameraVR.near;
				_currentDepthFar = cameraVR.far;

			}

			const parent = camera.parent;
			const cameras = cameraVR.cameras;

			updateCamera( cameraVR, parent );

			for ( let i = 0; i < cameras.length; i ++ ) {

				updateCamera( cameras[ i ], parent );

			}

			cameraVR.matrixWorld.decompose( cameraVR.position, cameraVR.quaternion, cameraVR.scale );

			// update user camera and its children

			camera.position.copy( cameraVR.position );
			camera.quaternion.copy( cameraVR.quaternion );
			camera.scale.copy( cameraVR.scale );
			camera.matrix.copy( cameraVR.matrix );
			camera.matrixWorld.copy( cameraVR.matrixWorld );

			const children = camera.children;

			for ( let i = 0, l = children.length; i < l; i ++ ) {

				children[ i ].updateMatrixWorld( true );

			}

			// update projection matrix for proper view frustum culling

			if ( cameras.length === 2 ) {

				setProjectionFromUnion( cameraVR, cameraL, cameraR );

			} else {

				// assume single camera setup (AR)

				cameraVR.projectionMatrix.copy( cameraL.projectionMatrix );

			}

		};

		this.getCamera = function () {

			return cameraVR;

		};

		this.getFoveation = function () {

			if ( glProjLayer !== null ) {

				return glProjLayer.fixedFoveation;

			}

			if ( glBaseLayer !== null ) {

				return glBaseLayer.fixedFoveation;

			}

			return undefined;

		};

		this.setFoveation = function ( foveation ) {

			// 0 = no foveation = full resolution
			// 1 = maximum foveation = the edges render at lower resolution

			if ( glProjLayer !== null ) {

				glProjLayer.fixedFoveation = foveation;

			}

			if ( glBaseLayer !== null && glBaseLayer.fixedFoveation !== undefined ) {

				glBaseLayer.fixedFoveation = foveation;

			}

		};

		// Animation Loop

		let onAnimationFrameCallback = null;

		function onAnimationFrame( time, frame ) {

			pose = frame.getViewerPose( referenceSpace );
			xrFrame = frame;

			if ( pose !== null ) {

				const views = pose.views;

				if ( glBaseLayer !== null ) {

					renderer.setRenderTargetFramebuffer( newRenderTarget, glBaseLayer.framebuffer );
					renderer.setRenderTarget( newRenderTarget );

				}

				let cameraVRNeedsUpdate = false;

				// check if it's necessary to rebuild cameraVR's camera list

				if ( views.length !== cameraVR.cameras.length ) {

					cameraVR.cameras.length = 0;
					cameraVRNeedsUpdate = true;

				}

				for ( let i = 0; i < views.length; i ++ ) {

					const view = views[ i ];

					let viewport = null;

					if ( glBaseLayer !== null ) {

						viewport = glBaseLayer.getViewport( view );

					} else {

						const glSubImage = glBinding.getViewSubImage( glProjLayer, view );
						viewport = glSubImage.viewport;

						// For side-by-side projection, we only produce a single texture for both eyes.
						if ( i === 0 ) {

							renderer.setRenderTargetTextures(
								newRenderTarget,
								glSubImage.colorTexture,
								glProjLayer.ignoreDepthValues ? undefined : glSubImage.depthStencilTexture );

							renderer.setRenderTarget( newRenderTarget );

						}

					}

					const camera = cameras[ i ];

					camera.matrix.fromArray( view.transform.matrix );
					camera.projectionMatrix.fromArray( view.projectionMatrix );
					camera.viewport.set( viewport.x, viewport.y, viewport.width, viewport.height );

					if ( i === 0 ) {

						cameraVR.matrix.copy( camera.matrix );

					}

					if ( cameraVRNeedsUpdate === true ) {

						cameraVR.cameras.push( camera );

					}

				}

			}

			//

			const inputSources = session.inputSources;

			for ( let i = 0; i < controllers.length; i ++ ) {

				const controller = controllers[ i ];
				const inputSource = inputSources[ i ];

				controller.update( inputSource, frame, referenceSpace );

			}

			if ( onAnimationFrameCallback ) onAnimationFrameCallback( time, frame );

			xrFrame = null;

		}

		const animation = new WebGLAnimation();

		animation.setAnimationLoop( onAnimationFrame );

		this.setAnimationLoop = function ( callback ) {

			onAnimationFrameCallback = callback;

		};

		this.dispose = function () {};

	}

}

function WebGLMaterials( properties ) {

	function refreshFogUniforms( uniforms, fog ) {

		uniforms.fogColor.value.copy( fog.color );

		if ( fog.isFog ) {

			uniforms.fogNear.value = fog.near;
			uniforms.fogFar.value = fog.far;

		} else if ( fog.isFogExp2 ) {

			uniforms.fogDensity.value = fog.density;

		}

	}

	function refreshMaterialUniforms( uniforms, material, pixelRatio, height, transmissionRenderTarget ) {

		if ( material.isMeshBasicMaterial ) {

			refreshUniformsCommon( uniforms, material );

		} else if ( material.isMeshLambertMaterial ) {

			refreshUniformsCommon( uniforms, material );
			refreshUniformsLambert( uniforms, material );

		} else if ( material.isMeshToonMaterial ) {

			refreshUniformsCommon( uniforms, material );
			refreshUniformsToon( uniforms, material );

		} else if ( material.isMeshPhongMaterial ) {

			refreshUniformsCommon( uniforms, material );
			refreshUniformsPhong( uniforms, material );

		} else if ( material.isMeshStandardMaterial ) {

			refreshUniformsCommon( uniforms, material );

			if ( material.isMeshPhysicalMaterial ) {

				refreshUniformsPhysical( uniforms, material, transmissionRenderTarget );

			} else {

				refreshUniformsStandard( uniforms, material );

			}

		} else if ( material.isMeshMatcapMaterial ) {

			refreshUniformsCommon( uniforms, material );
			refreshUniformsMatcap( uniforms, material );

		} else if ( material.isMeshDepthMaterial ) {

			refreshUniformsCommon( uniforms, material );
			refreshUniformsDepth( uniforms, material );

		} else if ( material.isMeshDistanceMaterial ) {

			refreshUniformsCommon( uniforms, material );
			refreshUniformsDistance( uniforms, material );

		} else if ( material.isMeshNormalMaterial ) {

			refreshUniformsCommon( uniforms, material );
			refreshUniformsNormal( uniforms, material );

		} else if ( material.isLineBasicMaterial ) {

			refreshUniformsLine( uniforms, material );

			if ( material.isLineDashedMaterial ) {

				refreshUniformsDash( uniforms, material );

			}

		} else if ( material.isPointsMaterial ) {

			refreshUniformsPoints( uniforms, material, pixelRatio, height );

		} else if ( material.isSpriteMaterial ) {

			refreshUniformsSprites( uniforms, material );

		} else if ( material.isShadowMaterial ) {

			uniforms.color.value.copy( material.color );
			uniforms.opacity.value = material.opacity;

		} else if ( material.isShaderMaterial ) {

			material.uniformsNeedUpdate = false; // #15581

		}

	}

	function refreshUniformsCommon( uniforms, material ) {

		uniforms.opacity.value = material.opacity;

		if ( material.color ) {

			uniforms.diffuse.value.copy( material.color );

		}

		if ( material.emissive ) {

			uniforms.emissive.value.copy( material.emissive ).multiplyScalar( material.emissiveIntensity );

		}

		if ( material.map ) {

			uniforms.map.value = material.map;

		}

		if ( material.alphaMap ) {

			uniforms.alphaMap.value = material.alphaMap;

		}

		if ( material.specularMap ) {

			uniforms.specularMap.value = material.specularMap;

		}

		if ( material.alphaTest > 0 ) {

			uniforms.alphaTest.value = material.alphaTest;

		}

		const envMap = properties.get( material ).envMap;

		if ( envMap ) {

			uniforms.envMap.value = envMap;

			uniforms.flipEnvMap.value = ( envMap.isCubeTexture && envMap.isRenderTargetTexture === false ) ? - 1 : 1;

			uniforms.reflectivity.value = material.reflectivity;
			uniforms.ior.value = material.ior;
			uniforms.refractionRatio.value = material.refractionRatio;

		}

		if ( material.lightMap ) {

			uniforms.lightMap.value = material.lightMap;
			uniforms.lightMapIntensity.value = material.lightMapIntensity;

		}

		if ( material.aoMap ) {

			uniforms.aoMap.value = material.aoMap;
			uniforms.aoMapIntensity.value = material.aoMapIntensity;

		}

		// uv repeat and offset setting priorities
		// 1. color map
		// 2. specular map
		// 3. displacementMap map
		// 4. normal map
		// 5. bump map
		// 6. roughnessMap map
		// 7. metalnessMap map
		// 8. alphaMap map
		// 9. emissiveMap map
		// 10. clearcoat map
		// 11. clearcoat normal map
		// 12. clearcoat roughnessMap map
		// 13. specular intensity map
		// 14. specular tint map
		// 15. transmission map
		// 16. thickness map

		let uvScaleMap;

		if ( material.map ) {

			uvScaleMap = material.map;

		} else if ( material.specularMap ) {

			uvScaleMap = material.specularMap;

		} else if ( material.displacementMap ) {

			uvScaleMap = material.displacementMap;

		} else if ( material.normalMap ) {

			uvScaleMap = material.normalMap;

		} else if ( material.bumpMap ) {

			uvScaleMap = material.bumpMap;

		} else if ( material.roughnessMap ) {

			uvScaleMap = material.roughnessMap;

		} else if ( material.metalnessMap ) {

			uvScaleMap = material.metalnessMap;

		} else if ( material.alphaMap ) {

			uvScaleMap = material.alphaMap;

		} else if ( material.emissiveMap ) {

			uvScaleMap = material.emissiveMap;

		} else if ( material.clearcoatMap ) {

			uvScaleMap = material.clearcoatMap;

		} else if ( material.clearcoatNormalMap ) {

			uvScaleMap = material.clearcoatNormalMap;

		} else if ( material.clearcoatRoughnessMap ) {

			uvScaleMap = material.clearcoatRoughnessMap;

		} else if ( material.specularIntensityMap ) {

			uvScaleMap = material.specularIntensityMap;

		} else if ( material.specularColorMap ) {

			uvScaleMap = material.specularColorMap;

		} else if ( material.transmissionMap ) {

			uvScaleMap = material.transmissionMap;

		} else if ( material.thicknessMap ) {

			uvScaleMap = material.thicknessMap;

		} else if ( material.sheenColorMap ) {

			uvScaleMap = material.sheenColorMap;

		} else if ( material.sheenRoughnessMap ) {

			uvScaleMap = material.sheenRoughnessMap;

		}

		if ( uvScaleMap !== undefined ) {

			// backwards compatibility
			if ( uvScaleMap.isWebGLRenderTarget ) {

				uvScaleMap = uvScaleMap.texture;

			}

			if ( uvScaleMap.matrixAutoUpdate === true ) {

				uvScaleMap.updateMatrix();

			}

			uniforms.uvTransform.value.copy( uvScaleMap.matrix );

		}

		// uv repeat and offset setting priorities for uv2
		// 1. ao map
		// 2. light map

		let uv2ScaleMap;

		if ( material.aoMap ) {

			uv2ScaleMap = material.aoMap;

		} else if ( material.lightMap ) {

			uv2ScaleMap = material.lightMap;

		}

		if ( uv2ScaleMap !== undefined ) {

			// backwards compatibility
			if ( uv2ScaleMap.isWebGLRenderTarget ) {

				uv2ScaleMap = uv2ScaleMap.texture;

			}

			if ( uv2ScaleMap.matrixAutoUpdate === true ) {

				uv2ScaleMap.updateMatrix();

			}

			uniforms.uv2Transform.value.copy( uv2ScaleMap.matrix );

		}

	}

	function refreshUniformsLine( uniforms, material ) {

		uniforms.diffuse.value.copy( material.color );
		uniforms.opacity.value = material.opacity;

	}

	function refreshUniformsDash( uniforms, material ) {

		uniforms.dashSize.value = material.dashSize;
		uniforms.totalSize.value = material.dashSize + material.gapSize;
		uniforms.scale.value = material.scale;

	}

	function refreshUniformsPoints( uniforms, material, pixelRatio, height ) {

		uniforms.diffuse.value.copy( material.color );
		uniforms.opacity.value = material.opacity;
		uniforms.size.value = material.size * pixelRatio;
		uniforms.scale.value = height * 0.5;

		if ( material.map ) {

			uniforms.map.value = material.map;

		}

		if ( material.alphaMap ) {

			uniforms.alphaMap.value = material.alphaMap;

		}

		if ( material.alphaTest > 0 ) {

			uniforms.alphaTest.value = material.alphaTest;

		}

		// uv repeat and offset setting priorities
		// 1. color map
		// 2. alpha map

		let uvScaleMap;

		if ( material.map ) {

			uvScaleMap = material.map;

		} else if ( material.alphaMap ) {

			uvScaleMap = material.alphaMap;

		}

		if ( uvScaleMap !== undefined ) {

			if ( uvScaleMap.matrixAutoUpdate === true ) {

				uvScaleMap.updateMatrix();

			}

			uniforms.uvTransform.value.copy( uvScaleMap.matrix );

		}

	}

	function refreshUniformsSprites( uniforms, material ) {

		uniforms.diffuse.value.copy( material.color );
		uniforms.opacity.value = material.opacity;
		uniforms.rotation.value = material.rotation;

		if ( material.map ) {

			uniforms.map.value = material.map;

		}

		if ( material.alphaMap ) {

			uniforms.alphaMap.value = material.alphaMap;

		}

		if ( material.alphaTest > 0 ) {

			uniforms.alphaTest.value = material.alphaTest;

		}

		// uv repeat and offset setting priorities
		// 1. color map
		// 2. alpha map

		let uvScaleMap;

		if ( material.map ) {

			uvScaleMap = material.map;

		} else if ( material.alphaMap ) {

			uvScaleMap = material.alphaMap;

		}

		if ( uvScaleMap !== undefined ) {

			if ( uvScaleMap.matrixAutoUpdate === true ) {

				uvScaleMap.updateMatrix();

			}

			uniforms.uvTransform.value.copy( uvScaleMap.matrix );

		}

	}

	function refreshUniformsLambert( uniforms, material ) {

		if ( material.emissiveMap ) {

			uniforms.emissiveMap.value = material.emissiveMap;

		}

	}

	function refreshUniformsPhong( uniforms, material ) {

		uniforms.specular.value.copy( material.specular );
		uniforms.shininess.value = Math.max( material.shininess, 1e-4 ); // to prevent pow( 0.0, 0.0 )

		if ( material.emissiveMap ) {

			uniforms.emissiveMap.value = material.emissiveMap;

		}

		if ( material.bumpMap ) {

			uniforms.bumpMap.value = material.bumpMap;
			uniforms.bumpScale.value = material.bumpScale;
			if ( material.side === BackSide ) uniforms.bumpScale.value *= - 1;

		}

		if ( material.normalMap ) {

			uniforms.normalMap.value = material.normalMap;
			uniforms.normalScale.value.copy( material.normalScale );
			if ( material.side === BackSide ) uniforms.normalScale.value.negate();

		}

		if ( material.displacementMap ) {

			uniforms.displacementMap.value = material.displacementMap;
			uniforms.displacementScale.value = material.displacementScale;
			uniforms.displacementBias.value = material.displacementBias;

		}

	}

	function refreshUniformsToon( uniforms, material ) {

		if ( material.gradientMap ) {

			uniforms.gradientMap.value = material.gradientMap;

		}

		if ( material.emissiveMap ) {

			uniforms.emissiveMap.value = material.emissiveMap;

		}

		if ( material.bumpMap ) {

			uniforms.bumpMap.value = material.bumpMap;
			uniforms.bumpScale.value = material.bumpScale;
			if ( material.side === BackSide ) uniforms.bumpScale.value *= - 1;

		}

		if ( material.normalMap ) {

			uniforms.normalMap.value = material.normalMap;
			uniforms.normalScale.value.copy( material.normalScale );
			if ( material.side === BackSide ) uniforms.normalScale.value.negate();

		}

		if ( material.displacementMap ) {

			uniforms.displacementMap.value = material.displacementMap;
			uniforms.displacementScale.value = material.displacementScale;
			uniforms.displacementBias.value = material.displacementBias;

		}

	}

	function refreshUniformsStandard( uniforms, material ) {

		uniforms.roughness.value = material.roughness;
		uniforms.metalness.value = material.metalness;

		if ( material.roughnessMap ) {

			uniforms.roughnessMap.value = material.roughnessMap;

		}

		if ( material.metalnessMap ) {

			uniforms.metalnessMap.value = material.metalnessMap;

		}

		if ( material.emissiveMap ) {

			uniforms.emissiveMap.value = material.emissiveMap;

		}

		if ( material.bumpMap ) {

			uniforms.bumpMap.value = material.bumpMap;
			uniforms.bumpScale.value = material.bumpScale;
			if ( material.side === BackSide ) uniforms.bumpScale.value *= - 1;

		}

		if ( material.normalMap ) {

			uniforms.normalMap.value = material.normalMap;
			uniforms.normalScale.value.copy( material.normalScale );
			if ( material.side === BackSide ) uniforms.normalScale.value.negate();

		}

		if ( material.displacementMap ) {

			uniforms.displacementMap.value = material.displacementMap;
			uniforms.displacementScale.value = material.displacementScale;
			uniforms.displacementBias.value = material.displacementBias;

		}

		const envMap = properties.get( material ).envMap;

		if ( envMap ) {

			//uniforms.envMap.value = material.envMap; // part of uniforms common
			uniforms.envMapIntensity.value = material.envMapIntensity;

		}

	}

	function refreshUniformsPhysical( uniforms, material, transmissionRenderTarget ) {

		refreshUniformsStandard( uniforms, material );

		uniforms.ior.value = material.ior; // also part of uniforms common

		if ( material.sheen > 0 ) {

			uniforms.sheenColor.value.copy( material.sheenColor ).multiplyScalar( material.sheen );

			uniforms.sheenRoughness.value = material.sheenRoughness;

			if ( material.sheenColorMap ) {

				uniforms.sheenColorMap.value = material.sheenColorMap;

			}

			if ( material.sheenRoughnessMap ) {

				uniforms.sheenRoughnessMap.value = material.sheenRoughnessMap;

			}

		}

		if ( material.clearcoat > 0 ) {

			uniforms.clearcoat.value = material.clearcoat;
			uniforms.clearcoatRoughness.value = material.clearcoatRoughness;

			if ( material.clearcoatMap ) {

				uniforms.clearcoatMap.value = material.clearcoatMap;

			}

			if ( material.clearcoatRoughnessMap ) {

				uniforms.clearcoatRoughnessMap.value = material.clearcoatRoughnessMap;

			}

			if ( material.clearcoatNormalMap ) {

				uniforms.clearcoatNormalScale.value.copy( material.clearcoatNormalScale );
				uniforms.clearcoatNormalMap.value = material.clearcoatNormalMap;

				if ( material.side === BackSide ) {

					uniforms.clearcoatNormalScale.value.negate();

				}

			}

		}

		if ( material.transmission > 0 ) {

			uniforms.transmission.value = material.transmission;
			uniforms.transmissionSamplerMap.value = transmissionRenderTarget.texture;
			uniforms.transmissionSamplerSize.value.set( transmissionRenderTarget.width, transmissionRenderTarget.height );

			if ( material.transmissionMap ) {

				uniforms.transmissionMap.value = material.transmissionMap;

			}

			uniforms.thickness.value = material.thickness;

			if ( material.thicknessMap ) {

				uniforms.thicknessMap.value = material.thicknessMap;

			}

			uniforms.attenuationDistance.value = material.attenuationDistance;
			uniforms.attenuationColor.value.copy( material.attenuationColor );

		}

		uniforms.specularIntensity.value = material.specularIntensity;
		uniforms.specularColor.value.copy( material.specularColor );

		if ( material.specularIntensityMap ) {

			uniforms.specularIntensityMap.value = material.specularIntensityMap;

		}

		if ( material.specularColorMap ) {

			uniforms.specularColorMap.value = material.specularColorMap;

		}

	}

	function refreshUniformsMatcap( uniforms, material ) {

		if ( material.matcap ) {

			uniforms.matcap.value = material.matcap;

		}

		if ( material.bumpMap ) {

			uniforms.bumpMap.value = material.bumpMap;
			uniforms.bumpScale.value = material.bumpScale;
			if ( material.side === BackSide ) uniforms.bumpScale.value *= - 1;

		}

		if ( material.normalMap ) {

			uniforms.normalMap.value = material.normalMap;
			uniforms.normalScale.value.copy( material.normalScale );
			if ( material.side === BackSide ) uniforms.normalScale.value.negate();

		}

		if ( material.displacementMap ) {

			uniforms.displacementMap.value = material.displacementMap;
			uniforms.displacementScale.value = material.displacementScale;
			uniforms.displacementBias.value = material.displacementBias;

		}

	}

	function refreshUniformsDepth( uniforms, material ) {

		if ( material.displacementMap ) {

			uniforms.displacementMap.value = material.displacementMap;
			uniforms.displacementScale.value = material.displacementScale;
			uniforms.displacementBias.value = material.displacementBias;

		}

	}

	function refreshUniformsDistance( uniforms, material ) {

		if ( material.displacementMap ) {

			uniforms.displacementMap.value = material.displacementMap;
			uniforms.displacementScale.value = material.displacementScale;
			uniforms.displacementBias.value = material.displacementBias;

		}

		uniforms.referencePosition.value.copy( material.referencePosition );
		uniforms.nearDistance.value = material.nearDistance;
		uniforms.farDistance.value = material.farDistance;

	}

	function refreshUniformsNormal( uniforms, material ) {

		if ( material.bumpMap ) {

			uniforms.bumpMap.value = material.bumpMap;
			uniforms.bumpScale.value = material.bumpScale;
			if ( material.side === BackSide ) uniforms.bumpScale.value *= - 1;

		}

		if ( material.normalMap ) {

			uniforms.normalMap.value = material.normalMap;
			uniforms.normalScale.value.copy( material.normalScale );
			if ( material.side === BackSide ) uniforms.normalScale.value.negate();

		}

		if ( material.displacementMap ) {

			uniforms.displacementMap.value = material.displacementMap;
			uniforms.displacementScale.value = material.displacementScale;
			uniforms.displacementBias.value = material.displacementBias;

		}

	}

	return {
		refreshFogUniforms: refreshFogUniforms,
		refreshMaterialUniforms: refreshMaterialUniforms
	};

}

function createCanvasElement() {

	const canvas = createElementNS( 'canvas' );
	canvas.style.display = 'block';
	return canvas;

}

function WebGLRenderer( parameters = {} ) {

	const _canvas = parameters.canvas !== undefined ? parameters.canvas : createCanvasElement(),
		_context = parameters.context !== undefined ? parameters.context : null,

		_depth = parameters.depth !== undefined ? parameters.depth : true,
		_stencil = parameters.stencil !== undefined ? parameters.stencil : true,
		_antialias = parameters.antialias !== undefined ? parameters.antialias : false,
		_premultipliedAlpha = parameters.premultipliedAlpha !== undefined ? parameters.premultipliedAlpha : true,
		_preserveDrawingBuffer = parameters.preserveDrawingBuffer !== undefined ? parameters.preserveDrawingBuffer : false,
		_powerPreference = parameters.powerPreference !== undefined ? parameters.powerPreference : 'default',
		_failIfMajorPerformanceCaveat = parameters.failIfMajorPerformanceCaveat !== undefined ? parameters.failIfMajorPerformanceCaveat : false;

	let _alpha;

	if ( parameters.context !== undefined ) {

		_alpha = _context.getContextAttributes().alpha;

	} else {

		_alpha = parameters.alpha !== undefined ? parameters.alpha : false;

	}

	let currentRenderList = null;
	let currentRenderState = null;

	// render() can be called from within a callback triggered by another render.
	// We track this so that the nested render call gets its list and state isolated from the parent render call.

	const renderListStack = [];
	const renderStateStack = [];

	// public properties

	this.domElement = _canvas;

	// Debug configuration container
	this.debug = {

		/**
		 * Enables error checking and reporting when shader programs are being compiled
		 * @type {boolean}
		 */
		checkShaderErrors: true
	};

	// clearing

	this.autoClear = true;
	this.autoClearColor = true;
	this.autoClearDepth = true;
	this.autoClearStencil = true;

	// scene graph

	this.sortObjects = true;

	// user-defined clipping

	this.clippingPlanes = [];
	this.localClippingEnabled = false;

	// physically based shading

	this.outputEncoding = LinearEncoding;

	// physical lights

	this.physicallyCorrectLights = false;

	// tone mapping

	this.toneMapping = NoToneMapping;
	this.toneMappingExposure = 1.0;

	// internal properties

	const _this = this;

	let _isContextLost = false;

	// internal state cache

	let _currentActiveCubeFace = 0;
	let _currentActiveMipmapLevel = 0;
	let _currentRenderTarget = null;
	let _currentMaterialId = - 1;

	let _currentCamera = null;

	const _currentViewport = new Vector4$1();
	const _currentScissor = new Vector4$1();
	let _currentScissorTest = null;

	//

	let _width = _canvas.width;
	let _height = _canvas.height;

	let _pixelRatio = 1;
	let _opaqueSort = null;
	let _transparentSort = null;

	const _viewport = new Vector4$1( 0, 0, _width, _height );
	const _scissor = new Vector4$1( 0, 0, _width, _height );
	let _scissorTest = false;

	// frustum

	const _frustum = new Frustum();

	// clipping

	let _clippingEnabled = false;
	let _localClippingEnabled = false;

	// transmission

	let _transmissionRenderTarget = null;

	// camera matrices cache

	const _projScreenMatrix = new Matrix4();

	const _vector2 = new Vector2();
	const _vector3 = new Vector3();

	const _emptyScene = { background: null, fog: null, environment: null, overrideMaterial: null, isScene: true };

	function getTargetPixelRatio() {

		return _currentRenderTarget === null ? _pixelRatio : 1;

	}

	// initialize

	let _gl = _context;

	function getContext( contextNames, contextAttributes ) {

		for ( let i = 0; i < contextNames.length; i ++ ) {

			const contextName = contextNames[ i ];
			const context = _canvas.getContext( contextName, contextAttributes );
			if ( context !== null ) return context;

		}

		return null;

	}

	try {

		const contextAttributes = {
			alpha: true,
			depth: _depth,
			stencil: _stencil,
			antialias: _antialias,
			premultipliedAlpha: _premultipliedAlpha,
			preserveDrawingBuffer: _preserveDrawingBuffer,
			powerPreference: _powerPreference,
			failIfMajorPerformanceCaveat: _failIfMajorPerformanceCaveat
		};

		// OffscreenCanvas does not have setAttribute, see #22811
		if ( 'setAttribute' in _canvas ) _canvas.setAttribute( 'data-engine', `three.js r${REVISION}` );

		// event listeners must be registered before WebGL context is created, see #12753
		_canvas.addEventListener( 'webglcontextlost', onContextLost, false );
		_canvas.addEventListener( 'webglcontextrestored', onContextRestore, false );

		if ( _gl === null ) {

			const contextNames = [ 'webgl2', 'webgl', 'experimental-webgl' ];

			if ( _this.isWebGL1Renderer === true ) {

				contextNames.shift();

			}

			_gl = getContext( contextNames, contextAttributes );

			if ( _gl === null ) {

				if ( getContext( contextNames ) ) {

					throw new Error( 'Error creating WebGL context with your selected attributes.' );

				} else {

					throw new Error( 'Error creating WebGL context.' );

				}

			}

		}

		// Some experimental-webgl implementations do not have getShaderPrecisionFormat

		if ( _gl.getShaderPrecisionFormat === undefined ) {

			_gl.getShaderPrecisionFormat = function () {

				return { 'rangeMin': 1, 'rangeMax': 1, 'precision': 1 };

			};

		}

	} catch ( error ) {

		console.error( 'THREE.WebGLRenderer: ' + error.message );
		throw error;

	}

	let extensions, capabilities, state, info;
	let properties, textures, cubemaps, cubeuvmaps, attributes, geometries, objects;
	let programCache, materials, renderLists, renderStates, clipping, shadowMap;

	let background, morphtargets, bufferRenderer, indexedBufferRenderer;

	let utils, bindingStates;

	function initGLContext() {

		extensions = new WebGLExtensions( _gl );

		capabilities = new WebGLCapabilities( _gl, extensions, parameters );

		extensions.init( capabilities );

		utils = new WebGLUtils( _gl, extensions, capabilities );

		state = new WebGLState( _gl, extensions, capabilities );

		info = new WebGLInfo( _gl );
		properties = new WebGLProperties();
		textures = new WebGLTextures( _gl, extensions, state, properties, capabilities, utils, info );
		cubemaps = new WebGLCubeMaps( _this );
		cubeuvmaps = new WebGLCubeUVMaps( _this );
		attributes = new WebGLAttributes( _gl, capabilities );
		bindingStates = new WebGLBindingStates( _gl, extensions, attributes, capabilities );
		geometries = new WebGLGeometries( _gl, attributes, info, bindingStates );
		objects = new WebGLObjects( _gl, geometries, attributes, info );
		morphtargets = new WebGLMorphtargets( _gl, capabilities, textures );
		clipping = new WebGLClipping( properties );
		programCache = new WebGLPrograms( _this, cubemaps, cubeuvmaps, extensions, capabilities, bindingStates, clipping );
		materials = new WebGLMaterials( properties );
		renderLists = new WebGLRenderLists();
		renderStates = new WebGLRenderStates( extensions, capabilities );
		background = new WebGLBackground( _this, cubemaps, state, objects, _alpha, _premultipliedAlpha );
		shadowMap = new WebGLShadowMap( _this, objects, capabilities );

		bufferRenderer = new WebGLBufferRenderer( _gl, extensions, info, capabilities );
		indexedBufferRenderer = new WebGLIndexedBufferRenderer( _gl, extensions, info, capabilities );

		info.programs = programCache.programs;

		_this.capabilities = capabilities;
		_this.extensions = extensions;
		_this.properties = properties;
		_this.renderLists = renderLists;
		_this.shadowMap = shadowMap;
		_this.state = state;
		_this.info = info;

	}

	initGLContext();

	// xr

	const xr = new WebXRManager( _this, _gl );

	this.xr = xr;

	// API

	this.getContext = function () {

		return _gl;

	};

	this.getContextAttributes = function () {

		return _gl.getContextAttributes();

	};

	this.forceContextLoss = function () {

		const extension = extensions.get( 'WEBGL_lose_context' );
		if ( extension ) extension.loseContext();

	};

	this.forceContextRestore = function () {

		const extension = extensions.get( 'WEBGL_lose_context' );
		if ( extension ) extension.restoreContext();

	};

	this.getPixelRatio = function () {

		return _pixelRatio;

	};

	this.setPixelRatio = function ( value ) {

		if ( value === undefined ) return;

		_pixelRatio = value;

		this.setSize( _width, _height, false );

	};

	this.getSize = function ( target ) {

		return target.set( _width, _height );

	};

	this.setSize = function ( width, height, updateStyle ) {

		if ( xr.isPresenting ) {

			console.warn( 'THREE.WebGLRenderer: Can\'t change size while VR device is presenting.' );
			return;

		}

		_width = width;
		_height = height;

		_canvas.width = Math.floor( width * _pixelRatio );
		_canvas.height = Math.floor( height * _pixelRatio );

		if ( updateStyle !== false ) {

			_canvas.style.width = width + 'px';
			_canvas.style.height = height + 'px';

		}

		this.setViewport( 0, 0, width, height );

	};

	this.getDrawingBufferSize = function ( target ) {

		return target.set( _width * _pixelRatio, _height * _pixelRatio ).floor();

	};

	this.setDrawingBufferSize = function ( width, height, pixelRatio ) {

		_width = width;
		_height = height;

		_pixelRatio = pixelRatio;

		_canvas.width = Math.floor( width * pixelRatio );
		_canvas.height = Math.floor( height * pixelRatio );

		this.setViewport( 0, 0, width, height );

	};

	this.getCurrentViewport = function ( target ) {

		return target.copy( _currentViewport );

	};

	this.getViewport = function ( target ) {

		return target.copy( _viewport );

	};

	this.setViewport = function ( x, y, width, height ) {

		if ( x.isVector4 ) {

			_viewport.set( x.x, x.y, x.z, x.w );

		} else {

			_viewport.set( x, y, width, height );

		}

		state.viewport( _currentViewport.copy( _viewport ).multiplyScalar( _pixelRatio ).floor() );

	};

	this.getScissor = function ( target ) {

		return target.copy( _scissor );

	};

	this.setScissor = function ( x, y, width, height ) {

		if ( x.isVector4 ) {

			_scissor.set( x.x, x.y, x.z, x.w );

		} else {

			_scissor.set( x, y, width, height );

		}

		state.scissor( _currentScissor.copy( _scissor ).multiplyScalar( _pixelRatio ).floor() );

	};

	this.getScissorTest = function () {

		return _scissorTest;

	};

	this.setScissorTest = function ( boolean ) {

		state.setScissorTest( _scissorTest = boolean );

	};

	this.setOpaqueSort = function ( method ) {

		_opaqueSort = method;

	};

	this.setTransparentSort = function ( method ) {

		_transparentSort = method;

	};

	// Clearing

	this.getClearColor = function ( target ) {

		return target.copy( background.getClearColor() );

	};

	this.setClearColor = function () {

		background.setClearColor.apply( background, arguments );

	};

	this.getClearAlpha = function () {

		return background.getClearAlpha();

	};

	this.setClearAlpha = function () {

		background.setClearAlpha.apply( background, arguments );

	};

	this.clear = function ( color = true, depth = true, stencil = true ) {

		let bits = 0;

		if ( color ) bits |= 16384;
		if ( depth ) bits |= 256;
		if ( stencil ) bits |= 1024;

		_gl.clear( bits );

	};

	this.clearColor = function () {

		this.clear( true, false, false );

	};

	this.clearDepth = function () {

		this.clear( false, true, false );

	};

	this.clearStencil = function () {

		this.clear( false, false, true );

	};

	//

	this.dispose = function () {

		_canvas.removeEventListener( 'webglcontextlost', onContextLost, false );
		_canvas.removeEventListener( 'webglcontextrestored', onContextRestore, false );

		renderLists.dispose();
		renderStates.dispose();
		properties.dispose();
		cubemaps.dispose();
		cubeuvmaps.dispose();
		objects.dispose();
		bindingStates.dispose();
		programCache.dispose();

		xr.dispose();

		xr.removeEventListener( 'sessionstart', onXRSessionStart );
		xr.removeEventListener( 'sessionend', onXRSessionEnd );

		if ( _transmissionRenderTarget ) {

			_transmissionRenderTarget.dispose();
			_transmissionRenderTarget = null;

		}

		animation.stop();

	};

	// Events

	function onContextLost( event ) {

		event.preventDefault();

		console.log( 'THREE.WebGLRenderer: Context Lost.' );

		_isContextLost = true;

	}

	function onContextRestore( /* event */ ) {

		console.log( 'THREE.WebGLRenderer: Context Restored.' );

		_isContextLost = false;

		const infoAutoReset = info.autoReset;
		const shadowMapEnabled = shadowMap.enabled;
		const shadowMapAutoUpdate = shadowMap.autoUpdate;
		const shadowMapNeedsUpdate = shadowMap.needsUpdate;
		const shadowMapType = shadowMap.type;

		initGLContext();

		info.autoReset = infoAutoReset;
		shadowMap.enabled = shadowMapEnabled;
		shadowMap.autoUpdate = shadowMapAutoUpdate;
		shadowMap.needsUpdate = shadowMapNeedsUpdate;
		shadowMap.type = shadowMapType;

	}

	function onMaterialDispose( event ) {

		const material = event.target;

		material.removeEventListener( 'dispose', onMaterialDispose );

		deallocateMaterial( material );

	}

	// Buffer deallocation

	function deallocateMaterial( material ) {

		releaseMaterialProgramReferences( material );

		properties.remove( material );

	}


	function releaseMaterialProgramReferences( material ) {

		const programs = properties.get( material ).programs;

		if ( programs !== undefined ) {

			programs.forEach( function ( program ) {

				programCache.releaseProgram( program );

			} );

			if ( material.isShaderMaterial ) {

				programCache.releaseShaderCache( material );

			}

		}

	}

	// Buffer rendering

	this.renderBufferDirect = function ( camera, scene, geometry, material, object, group ) {

		if ( scene === null ) scene = _emptyScene; // renderBufferDirect second parameter used to be fog (could be null)

		const frontFaceCW = ( object.isMesh && object.matrixWorld.determinant() < 0 );

		const program = setProgram( camera, scene, geometry, material, object );

		state.setMaterial( material, frontFaceCW );

		//

		let index = geometry.index;
		const position = geometry.attributes.position;

		//

		if ( index === null ) {

			if ( position === undefined || position.count === 0 ) return;

		} else if ( index.count === 0 ) {

			return;

		}

		//

		let rangeFactor = 1;

		if ( material.wireframe === true ) {

			index = geometries.getWireframeAttribute( geometry );
			rangeFactor = 2;

		}

		bindingStates.setup( object, material, program, geometry, index );

		let attribute;
		let renderer = bufferRenderer;

		if ( index !== null ) {

			attribute = attributes.get( index );

			renderer = indexedBufferRenderer;
			renderer.setIndex( attribute );

		}

		//

		const dataCount = ( index !== null ) ? index.count : position.count;

		const rangeStart = geometry.drawRange.start * rangeFactor;
		const rangeCount = geometry.drawRange.count * rangeFactor;

		const groupStart = group !== null ? group.start * rangeFactor : 0;
		const groupCount = group !== null ? group.count * rangeFactor : Infinity;

		const drawStart = Math.max( rangeStart, groupStart );
		const drawEnd = Math.min( dataCount, rangeStart + rangeCount, groupStart + groupCount ) - 1;

		const drawCount = Math.max( 0, drawEnd - drawStart + 1 );

		if ( drawCount === 0 ) return;

		//

		if ( object.isMesh ) {

			if ( material.wireframe === true ) {

				state.setLineWidth( material.wireframeLinewidth * getTargetPixelRatio() );
				renderer.setMode( 1 );

			} else {

				renderer.setMode( 4 );

			}

		} else if ( object.isLine ) {

			let lineWidth = material.linewidth;

			if ( lineWidth === undefined ) lineWidth = 1; // Not using Line*Material

			state.setLineWidth( lineWidth * getTargetPixelRatio() );

			if ( object.isLineSegments ) {

				renderer.setMode( 1 );

			} else if ( object.isLineLoop ) {

				renderer.setMode( 2 );

			} else {

				renderer.setMode( 3 );

			}

		} else if ( object.isPoints ) {

			renderer.setMode( 0 );

		} else if ( object.isSprite ) {

			renderer.setMode( 4 );

		}

		if ( object.isInstancedMesh ) {

			renderer.renderInstances( drawStart, drawCount, object.count );

		} else if ( geometry.isInstancedBufferGeometry ) {

			const instanceCount = Math.min( geometry.instanceCount, geometry._maxInstanceCount );

			renderer.renderInstances( drawStart, drawCount, instanceCount );

		} else {

			renderer.render( drawStart, drawCount );

		}

	};

	// Compile

	this.compile = function ( scene, camera ) {

		currentRenderState = renderStates.get( scene );
		currentRenderState.init();

		renderStateStack.push( currentRenderState );

		scene.traverseVisible( function ( object ) {

			if ( object.isLight && object.layers.test( camera.layers ) ) {

				currentRenderState.pushLight( object );

				if ( object.castShadow ) {

					currentRenderState.pushShadow( object );

				}

			}

		} );

		currentRenderState.setupLights( _this.physicallyCorrectLights );

		scene.traverse( function ( object ) {

			const material = object.material;

			if ( material ) {

				if ( Array.isArray( material ) ) {

					for ( let i = 0; i < material.length; i ++ ) {

						const material2 = material[ i ];

						getProgram( material2, scene, object );

					}

				} else {

					getProgram( material, scene, object );

				}

			}

		} );

		renderStateStack.pop();
		currentRenderState = null;

	};

	// Animation Loop

	let onAnimationFrameCallback = null;

	function onAnimationFrame( time ) {

		if ( onAnimationFrameCallback ) onAnimationFrameCallback( time );

	}

	function onXRSessionStart() {

		animation.stop();

	}

	function onXRSessionEnd() {

		animation.start();

	}

	const animation = new WebGLAnimation();
	animation.setAnimationLoop( onAnimationFrame );

	if ( typeof window !== 'undefined' ) animation.setContext( window );

	this.setAnimationLoop = function ( callback ) {

		onAnimationFrameCallback = callback;
		xr.setAnimationLoop( callback );

		( callback === null ) ? animation.stop() : animation.start();

	};

	xr.addEventListener( 'sessionstart', onXRSessionStart );
	xr.addEventListener( 'sessionend', onXRSessionEnd );

	// Rendering

	this.render = function ( scene, camera ) {

		if ( camera !== undefined && camera.isCamera !== true ) {

			console.error( 'THREE.WebGLRenderer.render: camera is not an instance of THREE.Camera.' );
			return;

		}

		if ( _isContextLost === true ) return;

		// update scene graph

		if ( scene.autoUpdate === true ) scene.updateMatrixWorld();

		// update camera matrices and frustum

		if ( camera.parent === null ) camera.updateMatrixWorld();

		if ( xr.enabled === true && xr.isPresenting === true ) {

			if ( xr.cameraAutoUpdate === true ) xr.updateCamera( camera );

			camera = xr.getCamera(); // use XR camera for rendering

		}

		//
		if ( scene.isScene === true ) scene.onBeforeRender( _this, scene, camera, _currentRenderTarget );

		currentRenderState = renderStates.get( scene, renderStateStack.length );
		currentRenderState.init();

		renderStateStack.push( currentRenderState );

		_projScreenMatrix.multiplyMatrices( camera.projectionMatrix, camera.matrixWorldInverse );
		_frustum.setFromProjectionMatrix( _projScreenMatrix );

		_localClippingEnabled = this.localClippingEnabled;
		_clippingEnabled = clipping.init( this.clippingPlanes, _localClippingEnabled, camera );

		currentRenderList = renderLists.get( scene, renderListStack.length );
		currentRenderList.init();

		renderListStack.push( currentRenderList );

		projectObject( scene, camera, 0, _this.sortObjects );

		currentRenderList.finish();

		if ( _this.sortObjects === true ) {

			currentRenderList.sort( _opaqueSort, _transparentSort );

		}

		//

		if ( _clippingEnabled === true ) clipping.beginShadows();

		const shadowsArray = currentRenderState.state.shadowsArray;

		shadowMap.render( shadowsArray, scene, camera );

		if ( _clippingEnabled === true ) clipping.endShadows();

		//

		if ( this.info.autoReset === true ) this.info.reset();

		//

		background.render( currentRenderList, scene );

		// render scene

		currentRenderState.setupLights( _this.physicallyCorrectLights );

		if ( camera.isArrayCamera ) {

			const cameras = camera.cameras;

			for ( let i = 0, l = cameras.length; i < l; i ++ ) {

				const camera2 = cameras[ i ];

				renderScene( currentRenderList, scene, camera2, camera2.viewport );

			}

		} else {

			renderScene( currentRenderList, scene, camera );

		}

		//

		if ( _currentRenderTarget !== null ) {

			// resolve multisample renderbuffers to a single-sample texture if necessary

			textures.updateMultisampleRenderTarget( _currentRenderTarget );

			// Generate mipmap if we're using any kind of mipmap filtering

			textures.updateRenderTargetMipmap( _currentRenderTarget );

		}

		//

		if ( scene.isScene === true ) scene.onAfterRender( _this, scene, camera );

		// _gl.finish();

		bindingStates.resetDefaultState();
		_currentMaterialId = - 1;
		_currentCamera = null;

		renderStateStack.pop();

		if ( renderStateStack.length > 0 ) {

			currentRenderState = renderStateStack[ renderStateStack.length - 1 ];

		} else {

			currentRenderState = null;

		}

		renderListStack.pop();

		if ( renderListStack.length > 0 ) {

			currentRenderList = renderListStack[ renderListStack.length - 1 ];

		} else {

			currentRenderList = null;

		}

	};

	function projectObject( object, camera, groupOrder, sortObjects ) {

		if ( object.visible === false ) return;

		const visible = object.layers.test( camera.layers );

		if ( visible ) {

			if ( object.isGroup ) {

				groupOrder = object.renderOrder;

			} else if ( object.isLOD ) {

				if ( object.autoUpdate === true ) object.update( camera );

			} else if ( object.isLight ) {

				currentRenderState.pushLight( object );

				if ( object.castShadow ) {

					currentRenderState.pushShadow( object );

				}

			} else if ( object.isSprite ) {

				if ( ! object.frustumCulled || _frustum.intersectsSprite( object ) ) {

					if ( sortObjects ) {

						_vector3.setFromMatrixPosition( object.matrixWorld )
							.applyMatrix4( _projScreenMatrix );

					}

					const geometry = objects.update( object );
					const material = object.material;

					if ( material.visible ) {

						currentRenderList.push( object, geometry, material, groupOrder, _vector3.z, null );

					}

				}

			} else if ( object.isMesh || object.isLine || object.isPoints ) {

				if ( object.isSkinnedMesh ) {

					// update skeleton only once in a frame

					if ( object.skeleton.frame !== info.render.frame ) {

						object.skeleton.update();
						object.skeleton.frame = info.render.frame;

					}

				}

				if ( ! object.frustumCulled || _frustum.intersectsObject( object ) ) {

					if ( sortObjects ) {

						_vector3.setFromMatrixPosition( object.matrixWorld )
							.applyMatrix4( _projScreenMatrix );

					}

					const geometry = objects.update( object );
					const material = object.material;

					if ( Array.isArray( material ) ) {

						const groups = geometry.groups;

						for ( let i = 0, l = groups.length; i < l; i ++ ) {

							const group = groups[ i ];
							const groupMaterial = material[ group.materialIndex ];

							if ( groupMaterial && groupMaterial.visible ) {

								currentRenderList.push( object, geometry, groupMaterial, groupOrder, _vector3.z, group );

							}

						}

					} else if ( material.visible ) {

						currentRenderList.push( object, geometry, material, groupOrder, _vector3.z, null );

					}

				}

			}

		}

		const children = object.children;

		for ( let i = 0, l = children.length; i < l; i ++ ) {

			projectObject( children[ i ], camera, groupOrder, sortObjects );

		}

	}

	function renderScene( currentRenderList, scene, camera, viewport ) {

		const opaqueObjects = currentRenderList.opaque;
		const transmissiveObjects = currentRenderList.transmissive;
		const transparentObjects = currentRenderList.transparent;

		currentRenderState.setupLightsView( camera );

		if ( transmissiveObjects.length > 0 ) renderTransmissionPass( opaqueObjects, scene, camera );

		if ( viewport ) state.viewport( _currentViewport.copy( viewport ) );

		if ( opaqueObjects.length > 0 ) renderObjects( opaqueObjects, scene, camera );
		if ( transmissiveObjects.length > 0 ) renderObjects( transmissiveObjects, scene, camera );
		if ( transparentObjects.length > 0 ) renderObjects( transparentObjects, scene, camera );

		// Ensure depth buffer writing is enabled so it can be cleared on next render

		state.buffers.depth.setTest( true );
		state.buffers.depth.setMask( true );
		state.buffers.color.setMask( true );

		state.setPolygonOffset( false );

	}

	function renderTransmissionPass( opaqueObjects, scene, camera ) {

		const isWebGL2 = capabilities.isWebGL2;

		if ( _transmissionRenderTarget === null ) {

			_transmissionRenderTarget = new WebGLRenderTarget( 1, 1, {
				generateMipmaps: true,
				type: utils.convert( HalfFloatType ) !== null ? HalfFloatType : UnsignedByteType,
				minFilter: LinearMipmapLinearFilter,
				samples: ( isWebGL2 && _antialias === true ) ? 4 : 0
			} );

		}

		_this.getDrawingBufferSize( _vector2 );

		if ( isWebGL2 ) {

			_transmissionRenderTarget.setSize( _vector2.x, _vector2.y );

		} else {

			_transmissionRenderTarget.setSize( floorPowerOfTwo( _vector2.x ), floorPowerOfTwo( _vector2.y ) );

		}

		//

		const currentRenderTarget = _this.getRenderTarget();
		_this.setRenderTarget( _transmissionRenderTarget );
		_this.clear();

		// Turn off the features which can affect the frag color for opaque objects pass.
		// Otherwise they are applied twice in opaque objects pass and transmission objects pass.
		const currentToneMapping = _this.toneMapping;
		_this.toneMapping = NoToneMapping;

		renderObjects( opaqueObjects, scene, camera );

		_this.toneMapping = currentToneMapping;

		textures.updateMultisampleRenderTarget( _transmissionRenderTarget );
		textures.updateRenderTargetMipmap( _transmissionRenderTarget );

		_this.setRenderTarget( currentRenderTarget );

	}

	function renderObjects( renderList, scene, camera ) {

		const overrideMaterial = scene.isScene === true ? scene.overrideMaterial : null;

		for ( let i = 0, l = renderList.length; i < l; i ++ ) {

			const renderItem = renderList[ i ];

			const object = renderItem.object;
			const geometry = renderItem.geometry;
			const material = overrideMaterial === null ? renderItem.material : overrideMaterial;
			const group = renderItem.group;

			if ( object.layers.test( camera.layers ) ) {

				renderObject( object, scene, camera, geometry, material, group );

			}

		}

	}

	function renderObject( object, scene, camera, geometry, material, group ) {

		object.onBeforeRender( _this, scene, camera, geometry, material, group );

		object.modelViewMatrix.multiplyMatrices( camera.matrixWorldInverse, object.matrixWorld );
		object.normalMatrix.getNormalMatrix( object.modelViewMatrix );

		material.onBeforeRender( _this, scene, camera, geometry, object, group );

		if ( material.transparent === true && material.side === DoubleSide ) {

			material.side = BackSide;
			material.needsUpdate = true;
			_this.renderBufferDirect( camera, scene, geometry, material, object, group );

			material.side = FrontSide;
			material.needsUpdate = true;
			_this.renderBufferDirect( camera, scene, geometry, material, object, group );

			material.side = DoubleSide;

		} else {

			_this.renderBufferDirect( camera, scene, geometry, material, object, group );

		}

		object.onAfterRender( _this, scene, camera, geometry, material, group );

	}

	function getProgram( material, scene, object ) {

		if ( scene.isScene !== true ) scene = _emptyScene; // scene could be a Mesh, Line, Points, ...

		const materialProperties = properties.get( material );

		const lights = currentRenderState.state.lights;
		const shadowsArray = currentRenderState.state.shadowsArray;

		const lightsStateVersion = lights.state.version;

		const parameters = programCache.getParameters( material, lights.state, shadowsArray, scene, object );
		const programCacheKey = programCache.getProgramCacheKey( parameters );

		let programs = materialProperties.programs;

		// always update environment and fog - changing these trigger an getProgram call, but it's possible that the program doesn't change

		materialProperties.environment = material.isMeshStandardMaterial ? scene.environment : null;
		materialProperties.fog = scene.fog;
		materialProperties.envMap = ( material.isMeshStandardMaterial ? cubeuvmaps : cubemaps ).get( material.envMap || materialProperties.environment );

		if ( programs === undefined ) {

			// new material

			material.addEventListener( 'dispose', onMaterialDispose );

			programs = new Map();
			materialProperties.programs = programs;

		}

		let program = programs.get( programCacheKey );

		if ( program !== undefined ) {

			// early out if program and light state is identical

			if ( materialProperties.currentProgram === program && materialProperties.lightsStateVersion === lightsStateVersion ) {

				updateCommonMaterialProperties( material, parameters );

				return program;

			}

		} else {

			parameters.uniforms = programCache.getUniforms( material );

			material.onBuild( object, parameters, _this );

			material.onBeforeCompile( parameters, _this );

			program = programCache.acquireProgram( parameters, programCacheKey );
			programs.set( programCacheKey, program );

			materialProperties.uniforms = parameters.uniforms;

		}

		const uniforms = materialProperties.uniforms;

		if ( ( ! material.isShaderMaterial && ! material.isRawShaderMaterial ) || material.clipping === true ) {

			uniforms.clippingPlanes = clipping.uniform;

		}

		updateCommonMaterialProperties( material, parameters );

		// store the light setup it was created for

		materialProperties.needsLights = materialNeedsLights( material );
		materialProperties.lightsStateVersion = lightsStateVersion;

		if ( materialProperties.needsLights ) {

			// wire up the material to this renderer's lighting state

			uniforms.ambientLightColor.value = lights.state.ambient;
			uniforms.lightProbe.value = lights.state.probe;
			uniforms.directionalLights.value = lights.state.directional;
			uniforms.directionalLightShadows.value = lights.state.directionalShadow;
			uniforms.spotLights.value = lights.state.spot;
			uniforms.spotLightShadows.value = lights.state.spotShadow;
			uniforms.rectAreaLights.value = lights.state.rectArea;
			uniforms.ltc_1.value = lights.state.rectAreaLTC1;
			uniforms.ltc_2.value = lights.state.rectAreaLTC2;
			uniforms.pointLights.value = lights.state.point;
			uniforms.pointLightShadows.value = lights.state.pointShadow;
			uniforms.hemisphereLights.value = lights.state.hemi;

			uniforms.directionalShadowMap.value = lights.state.directionalShadowMap;
			uniforms.directionalShadowMatrix.value = lights.state.directionalShadowMatrix;
			uniforms.spotShadowMap.value = lights.state.spotShadowMap;
			uniforms.spotShadowMatrix.value = lights.state.spotShadowMatrix;
			uniforms.pointShadowMap.value = lights.state.pointShadowMap;
			uniforms.pointShadowMatrix.value = lights.state.pointShadowMatrix;
			// TODO (abelnation): add area lights shadow info to uniforms

		}

		const progUniforms = program.getUniforms();
		const uniformsList = WebGLUniforms.seqWithValue( progUniforms.seq, uniforms );

		materialProperties.currentProgram = program;
		materialProperties.uniformsList = uniformsList;

		return program;

	}

	function updateCommonMaterialProperties( material, parameters ) {

		const materialProperties = properties.get( material );

		materialProperties.outputEncoding = parameters.outputEncoding;
		materialProperties.instancing = parameters.instancing;
		materialProperties.skinning = parameters.skinning;
		materialProperties.morphTargets = parameters.morphTargets;
		materialProperties.morphNormals = parameters.morphNormals;
		materialProperties.morphColors = parameters.morphColors;
		materialProperties.morphTargetsCount = parameters.morphTargetsCount;
		materialProperties.numClippingPlanes = parameters.numClippingPlanes;
		materialProperties.numIntersection = parameters.numClipIntersection;
		materialProperties.vertexAlphas = parameters.vertexAlphas;
		materialProperties.vertexTangents = parameters.vertexTangents;
		materialProperties.toneMapping = parameters.toneMapping;

	}

	function setProgram( camera, scene, geometry, material, object ) {

		if ( scene.isScene !== true ) scene = _emptyScene; // scene could be a Mesh, Line, Points, ...

		textures.resetTextureUnits();

		const fog = scene.fog;
		const environment = material.isMeshStandardMaterial ? scene.environment : null;
		const encoding = ( _currentRenderTarget === null ) ? _this.outputEncoding : ( _currentRenderTarget.isXRRenderTarget === true ? _currentRenderTarget.texture.encoding : LinearEncoding );
		const envMap = ( material.isMeshStandardMaterial ? cubeuvmaps : cubemaps ).get( material.envMap || environment );
		const vertexAlphas = material.vertexColors === true && !! geometry.attributes.color && geometry.attributes.color.itemSize === 4;
		const vertexTangents = !! material.normalMap && !! geometry.attributes.tangent;
		const morphTargets = !! geometry.morphAttributes.position;
		const morphNormals = !! geometry.morphAttributes.normal;
		const morphColors = !! geometry.morphAttributes.color;
		const toneMapping = material.toneMapped ? _this.toneMapping : NoToneMapping;

		const morphAttribute = geometry.morphAttributes.position || geometry.morphAttributes.normal || geometry.morphAttributes.color;
		const morphTargetsCount = ( morphAttribute !== undefined ) ? morphAttribute.length : 0;

		const materialProperties = properties.get( material );
		const lights = currentRenderState.state.lights;

		if ( _clippingEnabled === true ) {

			if ( _localClippingEnabled === true || camera !== _currentCamera ) {

				const useCache =
					camera === _currentCamera &&
					material.id === _currentMaterialId;

				// we might want to call this function with some ClippingGroup
				// object instead of the material, once it becomes feasible
				// (#8465, #8379)
				clipping.setState( material, camera, useCache );

			}

		}

		//

		let needsProgramChange = false;

		if ( material.version === materialProperties.__version ) {

			if ( materialProperties.needsLights && ( materialProperties.lightsStateVersion !== lights.state.version ) ) {

				needsProgramChange = true;

			} else if ( materialProperties.outputEncoding !== encoding ) {

				needsProgramChange = true;

			} else if ( object.isInstancedMesh && materialProperties.instancing === false ) {

				needsProgramChange = true;

			} else if ( ! object.isInstancedMesh && materialProperties.instancing === true ) {

				needsProgramChange = true;

			} else if ( object.isSkinnedMesh && materialProperties.skinning === false ) {

				needsProgramChange = true;

			} else if ( ! object.isSkinnedMesh && materialProperties.skinning === true ) {

				needsProgramChange = true;

			} else if ( materialProperties.envMap !== envMap ) {

				needsProgramChange = true;

			} else if ( material.fog && materialProperties.fog !== fog ) {

				needsProgramChange = true;

			} else if ( materialProperties.numClippingPlanes !== undefined &&
				( materialProperties.numClippingPlanes !== clipping.numPlanes ||
				materialProperties.numIntersection !== clipping.numIntersection ) ) {

				needsProgramChange = true;

			} else if ( materialProperties.vertexAlphas !== vertexAlphas ) {

				needsProgramChange = true;

			} else if ( materialProperties.vertexTangents !== vertexTangents ) {

				needsProgramChange = true;

			} else if ( materialProperties.morphTargets !== morphTargets ) {

				needsProgramChange = true;

			} else if ( materialProperties.morphNormals !== morphNormals ) {

				needsProgramChange = true;

			} else if ( materialProperties.morphColors !== morphColors ) {

				needsProgramChange = true;

			} else if ( materialProperties.toneMapping !== toneMapping ) {

				needsProgramChange = true;

			} else if ( capabilities.isWebGL2 === true && materialProperties.morphTargetsCount !== morphTargetsCount ) {

				needsProgramChange = true;

			}

		} else {

			needsProgramChange = true;
			materialProperties.__version = material.version;

		}

		//

		let program = materialProperties.currentProgram;

		if ( needsProgramChange === true ) {

			program = getProgram( material, scene, object );

		}

		let refreshProgram = false;
		let refreshMaterial = false;
		let refreshLights = false;

		const p_uniforms = program.getUniforms(),
			m_uniforms = materialProperties.uniforms;

		if ( state.useProgram( program.program ) ) {

			refreshProgram = true;
			refreshMaterial = true;
			refreshLights = true;

		}

		if ( material.id !== _currentMaterialId ) {

			_currentMaterialId = material.id;

			refreshMaterial = true;

		}

		if ( refreshProgram || _currentCamera !== camera ) {

			p_uniforms.setValue( _gl, 'projectionMatrix', camera.projectionMatrix );

			if ( capabilities.logarithmicDepthBuffer ) {

				p_uniforms.setValue( _gl, 'logDepthBufFC',
					2.0 / ( Math.log( camera.far + 1.0 ) / Math.LN2 ) );

			}

			if ( _currentCamera !== camera ) {

				_currentCamera = camera;

				// lighting uniforms depend on the camera so enforce an update
				// now, in case this material supports lights - or later, when
				// the next material that does gets activated:

				refreshMaterial = true;		// set to true on material change
				refreshLights = true;		// remains set until update done

			}

			// load material specific uniforms
			// (shader material also gets them for the sake of genericity)

			if ( material.isShaderMaterial ||
				material.isMeshPhongMaterial ||
				material.isMeshToonMaterial ||
				material.isMeshStandardMaterial ||
				material.envMap ) {

				const uCamPos = p_uniforms.map.cameraPosition;

				if ( uCamPos !== undefined ) {

					uCamPos.setValue( _gl,
						_vector3.setFromMatrixPosition( camera.matrixWorld ) );

				}

			}

			if ( material.isMeshPhongMaterial ||
				material.isMeshToonMaterial ||
				material.isMeshLambertMaterial ||
				material.isMeshBasicMaterial ||
				material.isMeshStandardMaterial ||
				material.isShaderMaterial ) {

				p_uniforms.setValue( _gl, 'isOrthographic', camera.isOrthographicCamera === true );

			}

			if ( material.isMeshPhongMaterial ||
				material.isMeshToonMaterial ||
				material.isMeshLambertMaterial ||
				material.isMeshBasicMaterial ||
				material.isMeshStandardMaterial ||
				material.isShaderMaterial ||
				material.isShadowMaterial ||
				object.isSkinnedMesh ) {

				p_uniforms.setValue( _gl, 'viewMatrix', camera.matrixWorldInverse );

			}

		}

		// skinning and morph target uniforms must be set even if material didn't change
		// auto-setting of texture unit for bone and morph texture must go before other textures
		// otherwise textures used for skinning and morphing can take over texture units reserved for other material textures

		if ( object.isSkinnedMesh ) {

			p_uniforms.setOptional( _gl, object, 'bindMatrix' );
			p_uniforms.setOptional( _gl, object, 'bindMatrixInverse' );

			const skeleton = object.skeleton;

			if ( skeleton ) {

				if ( capabilities.floatVertexTextures ) {

					if ( skeleton.boneTexture === null ) skeleton.computeBoneTexture();

					p_uniforms.setValue( _gl, 'boneTexture', skeleton.boneTexture, textures );
					p_uniforms.setValue( _gl, 'boneTextureSize', skeleton.boneTextureSize );

				} else {

					p_uniforms.setOptional( _gl, skeleton, 'boneMatrices' );

				}

			}

		}

		const morphAttributes = geometry.morphAttributes;

		if ( morphAttributes.position !== undefined || morphAttributes.normal !== undefined || ( morphAttributes.color !== undefined && capabilities.isWebGL2 === true ) ) {

			morphtargets.update( object, geometry, material, program );

		}


		if ( refreshMaterial || materialProperties.receiveShadow !== object.receiveShadow ) {

			materialProperties.receiveShadow = object.receiveShadow;
			p_uniforms.setValue( _gl, 'receiveShadow', object.receiveShadow );

		}

		if ( refreshMaterial ) {

			p_uniforms.setValue( _gl, 'toneMappingExposure', _this.toneMappingExposure );

			if ( materialProperties.needsLights ) {

				// the current material requires lighting info

				// note: all lighting uniforms are always set correctly
				// they simply reference the renderer's state for their
				// values
				//
				// use the current material's .needsUpdate flags to set
				// the GL state when required

				markUniformsLightsNeedsUpdate( m_uniforms, refreshLights );

			}

			// refresh uniforms common to several materials

			if ( fog && material.fog ) {

				materials.refreshFogUniforms( m_uniforms, fog );

			}

			materials.refreshMaterialUniforms( m_uniforms, material, _pixelRatio, _height, _transmissionRenderTarget );

			WebGLUniforms.upload( _gl, materialProperties.uniformsList, m_uniforms, textures );

		}

		if ( material.isShaderMaterial && material.uniformsNeedUpdate === true ) {

			WebGLUniforms.upload( _gl, materialProperties.uniformsList, m_uniforms, textures );
			material.uniformsNeedUpdate = false;

		}

		if ( material.isSpriteMaterial ) {

			p_uniforms.setValue( _gl, 'center', object.center );

		}

		// common matrices

		p_uniforms.setValue( _gl, 'modelViewMatrix', object.modelViewMatrix );
		p_uniforms.setValue( _gl, 'normalMatrix', object.normalMatrix );
		p_uniforms.setValue( _gl, 'modelMatrix', object.matrixWorld );

		return program;

	}

	// If uniforms are marked as clean, they don't need to be loaded to the GPU.

	function markUniformsLightsNeedsUpdate( uniforms, value ) {

		uniforms.ambientLightColor.needsUpdate = value;
		uniforms.lightProbe.needsUpdate = value;

		uniforms.directionalLights.needsUpdate = value;
		uniforms.directionalLightShadows.needsUpdate = value;
		uniforms.pointLights.needsUpdate = value;
		uniforms.pointLightShadows.needsUpdate = value;
		uniforms.spotLights.needsUpdate = value;
		uniforms.spotLightShadows.needsUpdate = value;
		uniforms.rectAreaLights.needsUpdate = value;
		uniforms.hemisphereLights.needsUpdate = value;

	}

	function materialNeedsLights( material ) {

		return material.isMeshLambertMaterial || material.isMeshToonMaterial || material.isMeshPhongMaterial ||
			material.isMeshStandardMaterial || material.isShadowMaterial ||
			( material.isShaderMaterial && material.lights === true );

	}

	this.getActiveCubeFace = function () {

		return _currentActiveCubeFace;

	};

	this.getActiveMipmapLevel = function () {

		return _currentActiveMipmapLevel;

	};

	this.getRenderTarget = function () {

		return _currentRenderTarget;

	};

	this.setRenderTargetTextures = function ( renderTarget, colorTexture, depthTexture ) {

		properties.get( renderTarget.texture ).__webglTexture = colorTexture;
		properties.get( renderTarget.depthTexture ).__webglTexture = depthTexture;

		const renderTargetProperties = properties.get( renderTarget );
		renderTargetProperties.__hasExternalTextures = true;

		if ( renderTargetProperties.__hasExternalTextures ) {

			renderTargetProperties.__autoAllocateDepthBuffer = depthTexture === undefined;

			if ( ! renderTargetProperties.__autoAllocateDepthBuffer ) {

				// The multisample_render_to_texture extension doesn't work properly if there
				// are midframe flushes and an external depth buffer. Disable use of the extension.
				if ( extensions.has( 'WEBGL_multisampled_render_to_texture' ) === true ) {

					console.warn( 'THREE.WebGLRenderer: Render-to-texture extension was disabled because an external texture was provided' );
					renderTargetProperties.__useRenderToTexture = false;

				}

			}

		}

	};

	this.setRenderTargetFramebuffer = function ( renderTarget, defaultFramebuffer ) {

		const renderTargetProperties = properties.get( renderTarget );
		renderTargetProperties.__webglFramebuffer = defaultFramebuffer;
		renderTargetProperties.__useDefaultFramebuffer = defaultFramebuffer === undefined;

	};

	this.setRenderTarget = function ( renderTarget, activeCubeFace = 0, activeMipmapLevel = 0 ) {

		_currentRenderTarget = renderTarget;
		_currentActiveCubeFace = activeCubeFace;
		_currentActiveMipmapLevel = activeMipmapLevel;

		let useDefaultFramebuffer = true;

		if ( renderTarget ) {

			const renderTargetProperties = properties.get( renderTarget );

			if ( renderTargetProperties.__useDefaultFramebuffer !== undefined ) {

				// We need to make sure to rebind the framebuffer.
				state.bindFramebuffer( 36160, null );
				useDefaultFramebuffer = false;

			} else if ( renderTargetProperties.__webglFramebuffer === undefined ) {

				textures.setupRenderTarget( renderTarget );

			} else if ( renderTargetProperties.__hasExternalTextures ) {

				// Color and depth texture must be rebound in order for the swapchain to update.
				textures.rebindTextures( renderTarget, properties.get( renderTarget.texture ).__webglTexture, properties.get( renderTarget.depthTexture ).__webglTexture );

			}

		}

		let framebuffer = null;
		let isCube = false;
		let isRenderTarget3D = false;

		if ( renderTarget ) {

			const texture = renderTarget.texture;

			if ( texture.isData3DTexture || texture.isDataArrayTexture ) {

				isRenderTarget3D = true;

			}

			const __webglFramebuffer = properties.get( renderTarget ).__webglFramebuffer;

			if ( renderTarget.isWebGLCubeRenderTarget ) {

				framebuffer = __webglFramebuffer[ activeCubeFace ];
				isCube = true;

			} else if ( ( capabilities.isWebGL2 && renderTarget.samples > 0 ) && textures.useMultisampledRTT( renderTarget ) === false ) {

				framebuffer = properties.get( renderTarget ).__webglMultisampledFramebuffer;

			} else {

				framebuffer = __webglFramebuffer;

			}

			_currentViewport.copy( renderTarget.viewport );
			_currentScissor.copy( renderTarget.scissor );
			_currentScissorTest = renderTarget.scissorTest;

		} else {

			_currentViewport.copy( _viewport ).multiplyScalar( _pixelRatio ).floor();
			_currentScissor.copy( _scissor ).multiplyScalar( _pixelRatio ).floor();
			_currentScissorTest = _scissorTest;

		}

		const framebufferBound = state.bindFramebuffer( 36160, framebuffer );

		if ( framebufferBound && capabilities.drawBuffers && useDefaultFramebuffer ) {

			state.drawBuffers( renderTarget, framebuffer );

		}

		state.viewport( _currentViewport );
		state.scissor( _currentScissor );
		state.setScissorTest( _currentScissorTest );

		if ( isCube ) {

			const textureProperties = properties.get( renderTarget.texture );
			_gl.framebufferTexture2D( 36160, 36064, 34069 + activeCubeFace, textureProperties.__webglTexture, activeMipmapLevel );

		} else if ( isRenderTarget3D ) {

			const textureProperties = properties.get( renderTarget.texture );
			const layer = activeCubeFace || 0;
			_gl.framebufferTextureLayer( 36160, 36064, textureProperties.__webglTexture, activeMipmapLevel || 0, layer );

		}

		_currentMaterialId = - 1; // reset current material to ensure correct uniform bindings

	};

	this.readRenderTargetPixels = function ( renderTarget, x, y, width, height, buffer, activeCubeFaceIndex ) {

		if ( ! ( renderTarget && renderTarget.isWebGLRenderTarget ) ) {

			console.error( 'THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not THREE.WebGLRenderTarget.' );
			return;

		}

		let framebuffer = properties.get( renderTarget ).__webglFramebuffer;

		if ( renderTarget.isWebGLCubeRenderTarget && activeCubeFaceIndex !== undefined ) {

			framebuffer = framebuffer[ activeCubeFaceIndex ];

		}

		if ( framebuffer ) {

			state.bindFramebuffer( 36160, framebuffer );

			try {

				const texture = renderTarget.texture;
				const textureFormat = texture.format;
				const textureType = texture.type;

				if ( textureFormat !== RGBAFormat && utils.convert( textureFormat ) !== _gl.getParameter( 35739 ) ) {

					console.error( 'THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not in RGBA or implementation defined format.' );
					return;

				}

				const halfFloatSupportedByExt = ( textureType === HalfFloatType ) && ( extensions.has( 'EXT_color_buffer_half_float' ) || ( capabilities.isWebGL2 && extensions.has( 'EXT_color_buffer_float' ) ) );

				if ( textureType !== UnsignedByteType && utils.convert( textureType ) !== _gl.getParameter( 35738 ) && // Edge and Chrome Mac < 52 (#9513)
					! ( textureType === FloatType && ( capabilities.isWebGL2 || extensions.has( 'OES_texture_float' ) || extensions.has( 'WEBGL_color_buffer_float' ) ) ) && // Chrome Mac >= 52 and Firefox
					! halfFloatSupportedByExt ) {

					console.error( 'THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not in UnsignedByteType or implementation defined type.' );
					return;

				}

				if ( _gl.checkFramebufferStatus( 36160 ) === 36053 ) {

					// the following if statement ensures valid read requests (no out-of-bounds pixels, see #8604)

					if ( ( x >= 0 && x <= ( renderTarget.width - width ) ) && ( y >= 0 && y <= ( renderTarget.height - height ) ) ) {

						_gl.readPixels( x, y, width, height, utils.convert( textureFormat ), utils.convert( textureType ), buffer );

					}

				} else {

					console.error( 'THREE.WebGLRenderer.readRenderTargetPixels: readPixels from renderTarget failed. Framebuffer not complete.' );

				}

			} finally {

				// restore framebuffer of current render target if necessary

				const framebuffer = ( _currentRenderTarget !== null ) ? properties.get( _currentRenderTarget ).__webglFramebuffer : null;
				state.bindFramebuffer( 36160, framebuffer );

			}

		}

	};

	this.copyFramebufferToTexture = function ( position, texture, level = 0 ) {

		if ( texture.isFramebufferTexture !== true ) {

			console.error( 'THREE.WebGLRenderer: copyFramebufferToTexture() can only be used with FramebufferTexture.' );
			return;

		}

		const levelScale = Math.pow( 2, - level );
		const width = Math.floor( texture.image.width * levelScale );
		const height = Math.floor( texture.image.height * levelScale );

		textures.setTexture2D( texture, 0 );

		_gl.copyTexSubImage2D( 3553, level, 0, 0, position.x, position.y, width, height );

		state.unbindTexture();

	};

	this.copyTextureToTexture = function ( position, srcTexture, dstTexture, level = 0 ) {

		const width = srcTexture.image.width;
		const height = srcTexture.image.height;
		const glFormat = utils.convert( dstTexture.format );
		const glType = utils.convert( dstTexture.type );

		textures.setTexture2D( dstTexture, 0 );

		// As another texture upload may have changed pixelStorei
		// parameters, make sure they are correct for the dstTexture
		_gl.pixelStorei( 37440, dstTexture.flipY );
		_gl.pixelStorei( 37441, dstTexture.premultiplyAlpha );
		_gl.pixelStorei( 3317, dstTexture.unpackAlignment );

		if ( srcTexture.isDataTexture ) {

			_gl.texSubImage2D( 3553, level, position.x, position.y, width, height, glFormat, glType, srcTexture.image.data );

		} else {

			if ( srcTexture.isCompressedTexture ) {

				_gl.compressedTexSubImage2D( 3553, level, position.x, position.y, srcTexture.mipmaps[ 0 ].width, srcTexture.mipmaps[ 0 ].height, glFormat, srcTexture.mipmaps[ 0 ].data );

			} else {

				_gl.texSubImage2D( 3553, level, position.x, position.y, glFormat, glType, srcTexture.image );

			}

		}

		// Generate mipmaps only when copying level 0
		if ( level === 0 && dstTexture.generateMipmaps ) _gl.generateMipmap( 3553 );

		state.unbindTexture();

	};

	this.copyTextureToTexture3D = function ( sourceBox, position, srcTexture, dstTexture, level = 0 ) {

		if ( _this.isWebGL1Renderer ) {

			console.warn( 'THREE.WebGLRenderer.copyTextureToTexture3D: can only be used with WebGL2.' );
			return;

		}

		const width = sourceBox.max.x - sourceBox.min.x + 1;
		const height = sourceBox.max.y - sourceBox.min.y + 1;
		const depth = sourceBox.max.z - sourceBox.min.z + 1;
		const glFormat = utils.convert( dstTexture.format );
		const glType = utils.convert( dstTexture.type );
		let glTarget;

		if ( dstTexture.isData3DTexture ) {

			textures.setTexture3D( dstTexture, 0 );
			glTarget = 32879;

		} else if ( dstTexture.isDataArrayTexture ) {

			textures.setTexture2DArray( dstTexture, 0 );
			glTarget = 35866;

		} else {

			console.warn( 'THREE.WebGLRenderer.copyTextureToTexture3D: only supports THREE.DataTexture3D and THREE.DataTexture2DArray.' );
			return;

		}

		_gl.pixelStorei( 37440, dstTexture.flipY );
		_gl.pixelStorei( 37441, dstTexture.premultiplyAlpha );
		_gl.pixelStorei( 3317, dstTexture.unpackAlignment );

		const unpackRowLen = _gl.getParameter( 3314 );
		const unpackImageHeight = _gl.getParameter( 32878 );
		const unpackSkipPixels = _gl.getParameter( 3316 );
		const unpackSkipRows = _gl.getParameter( 3315 );
		const unpackSkipImages = _gl.getParameter( 32877 );

		const image = srcTexture.isCompressedTexture ? srcTexture.mipmaps[ 0 ] : srcTexture.image;

		_gl.pixelStorei( 3314, image.width );
		_gl.pixelStorei( 32878, image.height );
		_gl.pixelStorei( 3316, sourceBox.min.x );
		_gl.pixelStorei( 3315, sourceBox.min.y );
		_gl.pixelStorei( 32877, sourceBox.min.z );

		if ( srcTexture.isDataTexture || srcTexture.isData3DTexture ) {

			_gl.texSubImage3D( glTarget, level, position.x, position.y, position.z, width, height, depth, glFormat, glType, image.data );

		} else {

			if ( srcTexture.isCompressedTexture ) {

				console.warn( 'THREE.WebGLRenderer.copyTextureToTexture3D: untested support for compressed srcTexture.' );
				_gl.compressedTexSubImage3D( glTarget, level, position.x, position.y, position.z, width, height, depth, glFormat, image.data );

			} else {

				_gl.texSubImage3D( glTarget, level, position.x, position.y, position.z, width, height, depth, glFormat, glType, image );

			}

		}

		_gl.pixelStorei( 3314, unpackRowLen );
		_gl.pixelStorei( 32878, unpackImageHeight );
		_gl.pixelStorei( 3316, unpackSkipPixels );
		_gl.pixelStorei( 3315, unpackSkipRows );
		_gl.pixelStorei( 32877, unpackSkipImages );

		// Generate mipmaps only when copying level 0
		if ( level === 0 && dstTexture.generateMipmaps ) _gl.generateMipmap( glTarget );

		state.unbindTexture();

	};

	this.initTexture = function ( texture ) {

		textures.setTexture2D( texture, 0 );

		state.unbindTexture();

	};

	this.resetState = function () {

		_currentActiveCubeFace = 0;
		_currentActiveMipmapLevel = 0;
		_currentRenderTarget = null;

		state.reset();
		bindingStates.reset();

	};

	if ( typeof __THREE_DEVTOOLS__ !== 'undefined' ) {

		__THREE_DEVTOOLS__.dispatchEvent( new CustomEvent( 'observe', { detail: this } ) );

	}

}

WebGLRenderer.prototype.isWebGLRenderer = true;

class WebGL1Renderer extends WebGLRenderer {}

WebGL1Renderer.prototype.isWebGL1Renderer = true;

class FogExp2 {

	constructor( color, density = 0.00025 ) {

		this.name = '';

		this.color = new Color( color );
		this.density = density;

	}

	clone() {

		return new FogExp2( this.color, this.density );

	}

	toJSON( /* meta */ ) {

		return {
			type: 'FogExp2',
			color: this.color.getHex(),
			density: this.density
		};

	}

}

FogExp2.prototype.isFogExp2 = true;

class Fog {

	constructor( color, near = 1, far = 1000 ) {

		this.name = '';

		this.color = new Color( color );

		this.near = near;
		this.far = far;

	}

	clone() {

		return new Fog( this.color, this.near, this.far );

	}

	toJSON( /* meta */ ) {

		return {
			type: 'Fog',
			color: this.color.getHex(),
			near: this.near,
			far: this.far
		};

	}

}

Fog.prototype.isFog = true;

class Scene extends Object3D {

	constructor() {

		super();

		this.type = 'Scene';

		this.background = null;
		this.environment = null;
		this.fog = null;

		this.overrideMaterial = null;

		this.autoUpdate = true; // checked by the renderer

		if ( typeof __THREE_DEVTOOLS__ !== 'undefined' ) {

			__THREE_DEVTOOLS__.dispatchEvent( new CustomEvent( 'observe', { detail: this } ) );

		}

	}

	copy( source, recursive ) {

		super.copy( source, recursive );

		if ( source.background !== null ) this.background = source.background.clone();
		if ( source.environment !== null ) this.environment = source.environment.clone();
		if ( source.fog !== null ) this.fog = source.fog.clone();

		if ( source.overrideMaterial !== null ) this.overrideMaterial = source.overrideMaterial.clone();

		this.autoUpdate = source.autoUpdate;
		this.matrixAutoUpdate = source.matrixAutoUpdate;

		return this;

	}

	toJSON( meta ) {

		const data = super.toJSON( meta );

		if ( this.fog !== null ) data.object.fog = this.fog.toJSON();

		return data;

	}

}

Scene.prototype.isScene = true;

class InterleavedBuffer {

	constructor( array, stride ) {

		this.array = array;
		this.stride = stride;
		this.count = array !== undefined ? array.length / stride : 0;

		this.usage = StaticDrawUsage;
		this.updateRange = { offset: 0, count: - 1 };

		this.version = 0;

		this.uuid = generateUUID();

	}

	onUploadCallback() {}

	set needsUpdate( value ) {

		if ( value === true ) this.version ++;

	}

	setUsage( value ) {

		this.usage = value;

		return this;

	}

	copy( source ) {

		this.array = new source.array.constructor( source.array );
		this.count = source.count;
		this.stride = source.stride;
		this.usage = source.usage;

		return this;

	}

	copyAt( index1, attribute, index2 ) {

		index1 *= this.stride;
		index2 *= attribute.stride;

		for ( let i = 0, l = this.stride; i < l; i ++ ) {

			this.array[ index1 + i ] = attribute.array[ index2 + i ];

		}

		return this;

	}

	set( value, offset = 0 ) {

		this.array.set( value, offset );

		return this;

	}

	clone( data ) {

		if ( data.arrayBuffers === undefined ) {

			data.arrayBuffers = {};

		}

		if ( this.array.buffer._uuid === undefined ) {

			this.array.buffer._uuid = generateUUID();

		}

		if ( data.arrayBuffers[ this.array.buffer._uuid ] === undefined ) {

			data.arrayBuffers[ this.array.buffer._uuid ] = this.array.slice( 0 ).buffer;

		}

		const array = new this.array.constructor( data.arrayBuffers[ this.array.buffer._uuid ] );

		const ib = new this.constructor( array, this.stride );
		ib.setUsage( this.usage );

		return ib;

	}

	onUpload( callback ) {

		this.onUploadCallback = callback;

		return this;

	}

	toJSON( data ) {

		if ( data.arrayBuffers === undefined ) {

			data.arrayBuffers = {};

		}

		// generate UUID for array buffer if necessary

		if ( this.array.buffer._uuid === undefined ) {

			this.array.buffer._uuid = generateUUID();

		}

		if ( data.arrayBuffers[ this.array.buffer._uuid ] === undefined ) {

			data.arrayBuffers[ this.array.buffer._uuid ] = Array.prototype.slice.call( new Uint32Array( this.array.buffer ) );

		}

		//

		return {
			uuid: this.uuid,
			buffer: this.array.buffer._uuid,
			type: this.array.constructor.name,
			stride: this.stride
		};

	}

}

InterleavedBuffer.prototype.isInterleavedBuffer = true;

const _vector$6 = /*@__PURE__*/ new Vector3();

class InterleavedBufferAttribute {

	constructor( interleavedBuffer, itemSize, offset, normalized = false ) {

		this.name = '';

		this.data = interleavedBuffer;
		this.itemSize = itemSize;
		this.offset = offset;

		this.normalized = normalized === true;

	}

	get count() {

		return this.data.count;

	}

	get array() {

		return this.data.array;

	}

	set needsUpdate( value ) {

		this.data.needsUpdate = value;

	}

	applyMatrix4( m ) {

		for ( let i = 0, l = this.data.count; i < l; i ++ ) {

			_vector$6.x = this.getX( i );
			_vector$6.y = this.getY( i );
			_vector$6.z = this.getZ( i );

			_vector$6.applyMatrix4( m );

			this.setXYZ( i, _vector$6.x, _vector$6.y, _vector$6.z );

		}

		return this;

	}

	applyNormalMatrix( m ) {

		for ( let i = 0, l = this.count; i < l; i ++ ) {

			_vector$6.x = this.getX( i );
			_vector$6.y = this.getY( i );
			_vector$6.z = this.getZ( i );

			_vector$6.applyNormalMatrix( m );

			this.setXYZ( i, _vector$6.x, _vector$6.y, _vector$6.z );

		}

		return this;

	}

	transformDirection( m ) {

		for ( let i = 0, l = this.count; i < l; i ++ ) {

			_vector$6.x = this.getX( i );
			_vector$6.y = this.getY( i );
			_vector$6.z = this.getZ( i );

			_vector$6.transformDirection( m );

			this.setXYZ( i, _vector$6.x, _vector$6.y, _vector$6.z );

		}

		return this;

	}

	setX( index, x ) {

		this.data.array[ index * this.data.stride + this.offset ] = x;

		return this;

	}

	setY( index, y ) {

		this.data.array[ index * this.data.stride + this.offset + 1 ] = y;

		return this;

	}

	setZ( index, z ) {

		this.data.array[ index * this.data.stride + this.offset + 2 ] = z;

		return this;

	}

	setW( index, w ) {

		this.data.array[ index * this.data.stride + this.offset + 3 ] = w;

		return this;

	}

	getX( index ) {

		return this.data.array[ index * this.data.stride + this.offset ];

	}

	getY( index ) {

		return this.data.array[ index * this.data.stride + this.offset + 1 ];

	}

	getZ( index ) {

		return this.data.array[ index * this.data.stride + this.offset + 2 ];

	}

	getW( index ) {

		return this.data.array[ index * this.data.stride + this.offset + 3 ];

	}

	setXY( index, x, y ) {

		index = index * this.data.stride + this.offset;

		this.data.array[ index + 0 ] = x;
		this.data.array[ index + 1 ] = y;

		return this;

	}

	setXYZ( index, x, y, z ) {

		index = index * this.data.stride + this.offset;

		this.data.array[ index + 0 ] = x;
		this.data.array[ index + 1 ] = y;
		this.data.array[ index + 2 ] = z;

		return this;

	}

	setXYZW( index, x, y, z, w ) {

		index = index * this.data.stride + this.offset;

		this.data.array[ index + 0 ] = x;
		this.data.array[ index + 1 ] = y;
		this.data.array[ index + 2 ] = z;
		this.data.array[ index + 3 ] = w;

		return this;

	}

	clone( data ) {

		if ( data === undefined ) {

			console.log( 'THREE.InterleavedBufferAttribute.clone(): Cloning an interlaved buffer attribute will deinterleave buffer data.' );

			const array = [];

			for ( let i = 0; i < this.count; i ++ ) {

				const index = i * this.data.stride + this.offset;

				for ( let j = 0; j < this.itemSize; j ++ ) {

					array.push( this.data.array[ index + j ] );

				}

			}

			return new BufferAttribute( new this.array.constructor( array ), this.itemSize, this.normalized );

		} else {

			if ( data.interleavedBuffers === undefined ) {

				data.interleavedBuffers = {};

			}

			if ( data.interleavedBuffers[ this.data.uuid ] === undefined ) {

				data.interleavedBuffers[ this.data.uuid ] = this.data.clone( data );

			}

			return new InterleavedBufferAttribute( data.interleavedBuffers[ this.data.uuid ], this.itemSize, this.offset, this.normalized );

		}

	}

	toJSON( data ) {

		if ( data === undefined ) {

			console.log( 'THREE.InterleavedBufferAttribute.toJSON(): Serializing an interlaved buffer attribute will deinterleave buffer data.' );

			const array = [];

			for ( let i = 0; i < this.count; i ++ ) {

				const index = i * this.data.stride + this.offset;

				for ( let j = 0; j < this.itemSize; j ++ ) {

					array.push( this.data.array[ index + j ] );

				}

			}

			// deinterleave data and save it as an ordinary buffer attribute for now

			return {
				itemSize: this.itemSize,
				type: this.array.constructor.name,
				array: array,
				normalized: this.normalized
			};

		} else {

			// save as true interlaved attribtue

			if ( data.interleavedBuffers === undefined ) {

				data.interleavedBuffers = {};

			}

			if ( data.interleavedBuffers[ this.data.uuid ] === undefined ) {

				data.interleavedBuffers[ this.data.uuid ] = this.data.toJSON( data );

			}

			return {
				isInterleavedBufferAttribute: true,
				itemSize: this.itemSize,
				data: this.data.uuid,
				offset: this.offset,
				normalized: this.normalized
			};

		}

	}

}

InterleavedBufferAttribute.prototype.isInterleavedBufferAttribute = true;

/**
 * parameters = {
 *  color: <hex>,
 *  map: new THREE.Texture( <Image> ),
 *  alphaMap: new THREE.Texture( <Image> ),
 *  rotation: <float>,
 *  sizeAttenuation: <bool>
 * }
 */

class SpriteMaterial extends Material {

	constructor( parameters ) {

		super();

		this.type = 'SpriteMaterial';

		this.color = new Color( 0xffffff );

		this.map = null;

		this.alphaMap = null;

		this.rotation = 0;

		this.sizeAttenuation = true;

		this.transparent = true;

		this.setValues( parameters );

	}

	copy( source ) {

		super.copy( source );

		this.color.copy( source.color );

		this.map = source.map;

		this.alphaMap = source.alphaMap;

		this.rotation = source.rotation;

		this.sizeAttenuation = source.sizeAttenuation;

		return this;

	}

}

SpriteMaterial.prototype.isSpriteMaterial = true;

let _geometry;

const _intersectPoint = /*@__PURE__*/ new Vector3();
const _worldScale = /*@__PURE__*/ new Vector3();
const _mvPosition = /*@__PURE__*/ new Vector3();

const _alignedPosition = /*@__PURE__*/ new Vector2();
const _rotatedPosition = /*@__PURE__*/ new Vector2();
const _viewWorldMatrix = /*@__PURE__*/ new Matrix4();

const _vA = /*@__PURE__*/ new Vector3();
const _vB = /*@__PURE__*/ new Vector3();
const _vC = /*@__PURE__*/ new Vector3();

const _uvA = /*@__PURE__*/ new Vector2();
const _uvB = /*@__PURE__*/ new Vector2();
const _uvC = /*@__PURE__*/ new Vector2();

class Sprite extends Object3D {

	constructor( material ) {

		super();

		this.type = 'Sprite';

		if ( _geometry === undefined ) {

			_geometry = new BufferGeometry();

			const float32Array = new Float32Array( [
				- 0.5, - 0.5, 0, 0, 0,
				0.5, - 0.5, 0, 1, 0,
				0.5, 0.5, 0, 1, 1,
				- 0.5, 0.5, 0, 0, 1
			] );

			const interleavedBuffer = new InterleavedBuffer( float32Array, 5 );

			_geometry.setIndex( [ 0, 1, 2,	0, 2, 3 ] );
			_geometry.setAttribute( 'position', new InterleavedBufferAttribute( interleavedBuffer, 3, 0, false ) );
			_geometry.setAttribute( 'uv', new InterleavedBufferAttribute( interleavedBuffer, 2, 3, false ) );

		}

		this.geometry = _geometry;
		this.material = ( material !== undefined ) ? material : new SpriteMaterial();

		this.center = new Vector2( 0.5, 0.5 );

	}

	raycast( raycaster, intersects ) {

		if ( raycaster.camera === null ) {

			console.error( 'THREE.Sprite: "Raycaster.camera" needs to be set in order to raycast against sprites.' );

		}

		_worldScale.setFromMatrixScale( this.matrixWorld );

		_viewWorldMatrix.copy( raycaster.camera.matrixWorld );
		this.modelViewMatrix.multiplyMatrices( raycaster.camera.matrixWorldInverse, this.matrixWorld );

		_mvPosition.setFromMatrixPosition( this.modelViewMatrix );

		if ( raycaster.camera.isPerspectiveCamera && this.material.sizeAttenuation === false ) {

			_worldScale.multiplyScalar( - _mvPosition.z );

		}

		const rotation = this.material.rotation;
		let sin, cos;

		if ( rotation !== 0 ) {

			cos = Math.cos( rotation );
			sin = Math.sin( rotation );

		}

		const center = this.center;

		transformVertex( _vA.set( - 0.5, - 0.5, 0 ), _mvPosition, center, _worldScale, sin, cos );
		transformVertex( _vB.set( 0.5, - 0.5, 0 ), _mvPosition, center, _worldScale, sin, cos );
		transformVertex( _vC.set( 0.5, 0.5, 0 ), _mvPosition, center, _worldScale, sin, cos );

		_uvA.set( 0, 0 );
		_uvB.set( 1, 0 );
		_uvC.set( 1, 1 );

		// check first triangle
		let intersect = raycaster.ray.intersectTriangle( _vA, _vB, _vC, false, _intersectPoint );

		if ( intersect === null ) {

			// check second triangle
			transformVertex( _vB.set( - 0.5, 0.5, 0 ), _mvPosition, center, _worldScale, sin, cos );
			_uvB.set( 0, 1 );

			intersect = raycaster.ray.intersectTriangle( _vA, _vC, _vB, false, _intersectPoint );
			if ( intersect === null ) {

				return;

			}

		}

		const distance = raycaster.ray.origin.distanceTo( _intersectPoint );

		if ( distance < raycaster.near || distance > raycaster.far ) return;

		intersects.push( {

			distance: distance,
			point: _intersectPoint.clone(),
			uv: Triangle.getUV( _intersectPoint, _vA, _vB, _vC, _uvA, _uvB, _uvC, new Vector2() ),
			face: null,
			object: this

		} );

	}

	copy( source ) {

		super.copy( source );

		if ( source.center !== undefined ) this.center.copy( source.center );

		this.material = source.material;

		return this;

	}

}

Sprite.prototype.isSprite = true;

function transformVertex( vertexPosition, mvPosition, center, scale, sin, cos ) {

	// compute position in camera space
	_alignedPosition.subVectors( vertexPosition, center ).addScalar( 0.5 ).multiply( scale );

	// to check if rotation is not zero
	if ( sin !== undefined ) {

		_rotatedPosition.x = ( cos * _alignedPosition.x ) - ( sin * _alignedPosition.y );
		_rotatedPosition.y = ( sin * _alignedPosition.x ) + ( cos * _alignedPosition.y );

	} else {

		_rotatedPosition.copy( _alignedPosition );

	}


	vertexPosition.copy( mvPosition );
	vertexPosition.x += _rotatedPosition.x;
	vertexPosition.y += _rotatedPosition.y;

	// transform to world space
	vertexPosition.applyMatrix4( _viewWorldMatrix );

}

const _v1$2 = /*@__PURE__*/ new Vector3();
const _v2$1 = /*@__PURE__*/ new Vector3();

class LOD extends Object3D {

	constructor() {

		super();

		this._currentLevel = 0;

		this.type = 'LOD';

		Object.defineProperties( this, {
			levels: {
				enumerable: true,
				value: []
			},
			isLOD: {
				value: true,
			}
		} );

		this.autoUpdate = true;

	}

	copy( source ) {

		super.copy( source, false );

		const levels = source.levels;

		for ( let i = 0, l = levels.length; i < l; i ++ ) {

			const level = levels[ i ];

			this.addLevel( level.object.clone(), level.distance );

		}

		this.autoUpdate = source.autoUpdate;

		return this;

	}

	addLevel( object, distance = 0 ) {

		distance = Math.abs( distance );

		const levels = this.levels;

		let l;

		for ( l = 0; l < levels.length; l ++ ) {

			if ( distance < levels[ l ].distance ) {

				break;

			}

		}

		levels.splice( l, 0, { distance: distance, object: object } );

		this.add( object );

		return this;

	}

	getCurrentLevel() {

		return this._currentLevel;

	}

	getObjectForDistance( distance ) {

		const levels = this.levels;

		if ( levels.length > 0 ) {

			let i, l;

			for ( i = 1, l = levels.length; i < l; i ++ ) {

				if ( distance < levels[ i ].distance ) {

					break;

				}

			}

			return levels[ i - 1 ].object;

		}

		return null;

	}

	raycast( raycaster, intersects ) {

		const levels = this.levels;

		if ( levels.length > 0 ) {

			_v1$2.setFromMatrixPosition( this.matrixWorld );

			const distance = raycaster.ray.origin.distanceTo( _v1$2 );

			this.getObjectForDistance( distance ).raycast( raycaster, intersects );

		}

	}

	update( camera ) {

		const levels = this.levels;

		if ( levels.length > 1 ) {

			_v1$2.setFromMatrixPosition( camera.matrixWorld );
			_v2$1.setFromMatrixPosition( this.matrixWorld );

			const distance = _v1$2.distanceTo( _v2$1 ) / camera.zoom;

			levels[ 0 ].object.visible = true;

			let i, l;

			for ( i = 1, l = levels.length; i < l; i ++ ) {

				if ( distance >= levels[ i ].distance ) {

					levels[ i - 1 ].object.visible = false;
					levels[ i ].object.visible = true;

				} else {

					break;

				}

			}

			this._currentLevel = i - 1;

			for ( ; i < l; i ++ ) {

				levels[ i ].object.visible = false;

			}

		}

	}

	toJSON( meta ) {

		const data = super.toJSON( meta );

		if ( this.autoUpdate === false ) data.object.autoUpdate = false;

		data.object.levels = [];

		const levels = this.levels;

		for ( let i = 0, l = levels.length; i < l; i ++ ) {

			const level = levels[ i ];

			data.object.levels.push( {
				object: level.object.uuid,
				distance: level.distance
			} );

		}

		return data;

	}

}

const _basePosition = /*@__PURE__*/ new Vector3();

const _skinIndex = /*@__PURE__*/ new Vector4$1();
const _skinWeight = /*@__PURE__*/ new Vector4$1();

const _vector$5 = /*@__PURE__*/ new Vector3();
const _matrix = /*@__PURE__*/ new Matrix4();

class SkinnedMesh extends Mesh {

	constructor( geometry, material ) {

		super( geometry, material );

		this.type = 'SkinnedMesh';

		this.bindMode = 'attached';
		this.bindMatrix = new Matrix4();
		this.bindMatrixInverse = new Matrix4();

	}

	copy( source ) {

		super.copy( source );

		this.bindMode = source.bindMode;
		this.bindMatrix.copy( source.bindMatrix );
		this.bindMatrixInverse.copy( source.bindMatrixInverse );

		this.skeleton = source.skeleton;

		return this;

	}

	bind( skeleton, bindMatrix ) {

		this.skeleton = skeleton;

		if ( bindMatrix === undefined ) {

			this.updateMatrixWorld( true );

			this.skeleton.calculateInverses();

			bindMatrix = this.matrixWorld;

		}

		this.bindMatrix.copy( bindMatrix );
		this.bindMatrixInverse.copy( bindMatrix ).invert();

	}

	pose() {

		this.skeleton.pose();

	}

	normalizeSkinWeights() {

		const vector = new Vector4$1();

		const skinWeight = this.geometry.attributes.skinWeight;

		for ( let i = 0, l = skinWeight.count; i < l; i ++ ) {

			vector.x = skinWeight.getX( i );
			vector.y = skinWeight.getY( i );
			vector.z = skinWeight.getZ( i );
			vector.w = skinWeight.getW( i );

			const scale = 1.0 / vector.manhattanLength();

			if ( scale !== Infinity ) {

				vector.multiplyScalar( scale );

			} else {

				vector.set( 1, 0, 0, 0 ); // do something reasonable

			}

			skinWeight.setXYZW( i, vector.x, vector.y, vector.z, vector.w );

		}

	}

	updateMatrixWorld( force ) {

		super.updateMatrixWorld( force );

		if ( this.bindMode === 'attached' ) {

			this.bindMatrixInverse.copy( this.matrixWorld ).invert();

		} else if ( this.bindMode === 'detached' ) {

			this.bindMatrixInverse.copy( this.bindMatrix ).invert();

		} else {

			console.warn( 'THREE.SkinnedMesh: Unrecognized bindMode: ' + this.bindMode );

		}

	}

	boneTransform( index, target ) {

		const skeleton = this.skeleton;
		const geometry = this.geometry;

		_skinIndex.fromBufferAttribute( geometry.attributes.skinIndex, index );
		_skinWeight.fromBufferAttribute( geometry.attributes.skinWeight, index );

		_basePosition.copy( target ).applyMatrix4( this.bindMatrix );

		target.set( 0, 0, 0 );

		for ( let i = 0; i < 4; i ++ ) {

			const weight = _skinWeight.getComponent( i );

			if ( weight !== 0 ) {

				const boneIndex = _skinIndex.getComponent( i );

				_matrix.multiplyMatrices( skeleton.bones[ boneIndex ].matrixWorld, skeleton.boneInverses[ boneIndex ] );

				target.addScaledVector( _vector$5.copy( _basePosition ).applyMatrix4( _matrix ), weight );

			}

		}

		return target.applyMatrix4( this.bindMatrixInverse );

	}

}

SkinnedMesh.prototype.isSkinnedMesh = true;

class Bone extends Object3D {

	constructor() {

		super();

		this.type = 'Bone';

	}

}

Bone.prototype.isBone = true;

class DataTexture extends Texture {

	constructor( data = null, width = 1, height = 1, format, type, mapping, wrapS, wrapT, magFilter = NearestFilter, minFilter = NearestFilter, anisotropy, encoding ) {

		super( null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding );

		this.image = { data: data, width: width, height: height };

		this.generateMipmaps = false;
		this.flipY = false;
		this.unpackAlignment = 1;

	}

}

DataTexture.prototype.isDataTexture = true;

const _offsetMatrix = /*@__PURE__*/ new Matrix4();
const _identityMatrix = /*@__PURE__*/ new Matrix4();

class Skeleton {

	constructor( bones = [], boneInverses = [] ) {

		this.uuid = generateUUID();

		this.bones = bones.slice( 0 );
		this.boneInverses = boneInverses;
		this.boneMatrices = null;

		this.boneTexture = null;
		this.boneTextureSize = 0;

		this.frame = - 1;

		this.init();

	}

	init() {

		const bones = this.bones;
		const boneInverses = this.boneInverses;

		this.boneMatrices = new Float32Array( bones.length * 16 );

		// calculate inverse bone matrices if necessary

		if ( boneInverses.length === 0 ) {

			this.calculateInverses();

		} else {

			// handle special case

			if ( bones.length !== boneInverses.length ) {

				console.warn( 'THREE.Skeleton: Number of inverse bone matrices does not match amount of bones.' );

				this.boneInverses = [];

				for ( let i = 0, il = this.bones.length; i < il; i ++ ) {

					this.boneInverses.push( new Matrix4() );

				}

			}

		}

	}

	calculateInverses() {

		this.boneInverses.length = 0;

		for ( let i = 0, il = this.bones.length; i < il; i ++ ) {

			const inverse = new Matrix4();

			if ( this.bones[ i ] ) {

				inverse.copy( this.bones[ i ].matrixWorld ).invert();

			}

			this.boneInverses.push( inverse );

		}

	}

	pose() {

		// recover the bind-time world matrices

		for ( let i = 0, il = this.bones.length; i < il; i ++ ) {

			const bone = this.bones[ i ];

			if ( bone ) {

				bone.matrixWorld.copy( this.boneInverses[ i ] ).invert();

			}

		}

		// compute the local matrices, positions, rotations and scales

		for ( let i = 0, il = this.bones.length; i < il; i ++ ) {

			const bone = this.bones[ i ];

			if ( bone ) {

				if ( bone.parent && bone.parent.isBone ) {

					bone.matrix.copy( bone.parent.matrixWorld ).invert();
					bone.matrix.multiply( bone.matrixWorld );

				} else {

					bone.matrix.copy( bone.matrixWorld );

				}

				bone.matrix.decompose( bone.position, bone.quaternion, bone.scale );

			}

		}

	}

	update() {

		const bones = this.bones;
		const boneInverses = this.boneInverses;
		const boneMatrices = this.boneMatrices;
		const boneTexture = this.boneTexture;

		// flatten bone matrices to array

		for ( let i = 0, il = bones.length; i < il; i ++ ) {

			// compute the offset between the current and the original transform

			const matrix = bones[ i ] ? bones[ i ].matrixWorld : _identityMatrix;

			_offsetMatrix.multiplyMatrices( matrix, boneInverses[ i ] );
			_offsetMatrix.toArray( boneMatrices, i * 16 );

		}

		if ( boneTexture !== null ) {

			boneTexture.needsUpdate = true;

		}

	}

	clone() {

		return new Skeleton( this.bones, this.boneInverses );

	}

	computeBoneTexture() {

		// layout (1 matrix = 4 pixels)
		//      RGBA RGBA RGBA RGBA (=> column1, column2, column3, column4)
		//  with  8x8  pixel texture max   16 bones * 4 pixels =  (8 * 8)
		//       16x16 pixel texture max   64 bones * 4 pixels = (16 * 16)
		//       32x32 pixel texture max  256 bones * 4 pixels = (32 * 32)
		//       64x64 pixel texture max 1024 bones * 4 pixels = (64 * 64)

		let size = Math.sqrt( this.bones.length * 4 ); // 4 pixels needed for 1 matrix
		size = ceilPowerOfTwo( size );
		size = Math.max( size, 4 );

		const boneMatrices = new Float32Array( size * size * 4 ); // 4 floats per RGBA pixel
		boneMatrices.set( this.boneMatrices ); // copy current values

		const boneTexture = new DataTexture( boneMatrices, size, size, RGBAFormat, FloatType );
		boneTexture.needsUpdate = true;

		this.boneMatrices = boneMatrices;
		this.boneTexture = boneTexture;
		this.boneTextureSize = size;

		return this;

	}

	getBoneByName( name ) {

		for ( let i = 0, il = this.bones.length; i < il; i ++ ) {

			const bone = this.bones[ i ];

			if ( bone.name === name ) {

				return bone;

			}

		}

		return undefined;

	}

	dispose( ) {

		if ( this.boneTexture !== null ) {

			this.boneTexture.dispose();

			this.boneTexture = null;

		}

	}

	fromJSON( json, bones ) {

		this.uuid = json.uuid;

		for ( let i = 0, l = json.bones.length; i < l; i ++ ) {

			const uuid = json.bones[ i ];
			let bone = bones[ uuid ];

			if ( bone === undefined ) {

				console.warn( 'THREE.Skeleton: No bone found with UUID:', uuid );
				bone = new Bone();

			}

			this.bones.push( bone );
			this.boneInverses.push( new Matrix4().fromArray( json.boneInverses[ i ] ) );

		}

		this.init();

		return this;

	}

	toJSON() {

		const data = {
			metadata: {
				version: 4.5,
				type: 'Skeleton',
				generator: 'Skeleton.toJSON'
			},
			bones: [],
			boneInverses: []
		};

		data.uuid = this.uuid;

		const bones = this.bones;
		const boneInverses = this.boneInverses;

		for ( let i = 0, l = bones.length; i < l; i ++ ) {

			const bone = bones[ i ];
			data.bones.push( bone.uuid );

			const boneInverse = boneInverses[ i ];
			data.boneInverses.push( boneInverse.toArray() );

		}

		return data;

	}

}

class InstancedBufferAttribute extends BufferAttribute {

	constructor( array, itemSize, normalized, meshPerAttribute = 1 ) {

		if ( typeof normalized === 'number' ) {

			meshPerAttribute = normalized;

			normalized = false;

			console.error( 'THREE.InstancedBufferAttribute: The constructor now expects normalized as the third argument.' );

		}

		super( array, itemSize, normalized );

		this.meshPerAttribute = meshPerAttribute;

	}

	copy( source ) {

		super.copy( source );

		this.meshPerAttribute = source.meshPerAttribute;

		return this;

	}

	toJSON() {

		const data = super.toJSON();

		data.meshPerAttribute = this.meshPerAttribute;

		data.isInstancedBufferAttribute = true;

		return data;

	}

}

InstancedBufferAttribute.prototype.isInstancedBufferAttribute = true;

const _instanceLocalMatrix = /*@__PURE__*/ new Matrix4();
const _instanceWorldMatrix = /*@__PURE__*/ new Matrix4();

const _instanceIntersects = [];

const _mesh = /*@__PURE__*/ new Mesh();

class InstancedMesh extends Mesh {

	constructor( geometry, material, count ) {

		super( geometry, material );

		this.instanceMatrix = new InstancedBufferAttribute( new Float32Array( count * 16 ), 16 );
		this.instanceColor = null;

		this.count = count;

		this.frustumCulled = false;

	}

	copy( source ) {

		super.copy( source );

		this.instanceMatrix.copy( source.instanceMatrix );

		if ( source.instanceColor !== null ) this.instanceColor = source.instanceColor.clone();

		this.count = source.count;

		return this;

	}

	getColorAt( index, color ) {

		color.fromArray( this.instanceColor.array, index * 3 );

	}

	getMatrixAt( index, matrix ) {

		matrix.fromArray( this.instanceMatrix.array, index * 16 );

	}

	raycast( raycaster, intersects ) {

		const matrixWorld = this.matrixWorld;
		const raycastTimes = this.count;

		_mesh.geometry = this.geometry;
		_mesh.material = this.material;

		if ( _mesh.material === undefined ) return;

		for ( let instanceId = 0; instanceId < raycastTimes; instanceId ++ ) {

			// calculate the world matrix for each instance

			this.getMatrixAt( instanceId, _instanceLocalMatrix );

			_instanceWorldMatrix.multiplyMatrices( matrixWorld, _instanceLocalMatrix );

			// the mesh represents this single instance

			_mesh.matrixWorld = _instanceWorldMatrix;

			_mesh.raycast( raycaster, _instanceIntersects );

			// process the result of raycast

			for ( let i = 0, l = _instanceIntersects.length; i < l; i ++ ) {

				const intersect = _instanceIntersects[ i ];
				intersect.instanceId = instanceId;
				intersect.object = this;
				intersects.push( intersect );

			}

			_instanceIntersects.length = 0;

		}

	}

	setColorAt( index, color ) {

		if ( this.instanceColor === null ) {

			this.instanceColor = new InstancedBufferAttribute( new Float32Array( this.instanceMatrix.count * 3 ), 3 );

		}

		color.toArray( this.instanceColor.array, index * 3 );

	}

	setMatrixAt( index, matrix ) {

		matrix.toArray( this.instanceMatrix.array, index * 16 );

	}

	updateMorphTargets() {

	}

	dispose() {

		this.dispatchEvent( { type: 'dispose' } );

	}

}

InstancedMesh.prototype.isInstancedMesh = true;

/**
 * parameters = {
 *  color: <hex>,
 *  opacity: <float>,
 *
 *  linewidth: <float>,
 *  linecap: "round",
 *  linejoin: "round"
 * }
 */

class LineBasicMaterial extends Material {

	constructor( parameters ) {

		super();

		this.type = 'LineBasicMaterial';

		this.color = new Color( 0xffffff );

		this.linewidth = 1;
		this.linecap = 'round';
		this.linejoin = 'round';

		this.setValues( parameters );

	}


	copy( source ) {

		super.copy( source );

		this.color.copy( source.color );

		this.linewidth = source.linewidth;
		this.linecap = source.linecap;
		this.linejoin = source.linejoin;

		return this;

	}

}

LineBasicMaterial.prototype.isLineBasicMaterial = true;

const _start$1 = /*@__PURE__*/ new Vector3();
const _end$1 = /*@__PURE__*/ new Vector3();
const _inverseMatrix$1 = /*@__PURE__*/ new Matrix4();
const _ray$1 = /*@__PURE__*/ new Ray();
const _sphere$1 = /*@__PURE__*/ new Sphere();

class Line extends Object3D {

	constructor( geometry = new BufferGeometry(), material = new LineBasicMaterial() ) {

		super();

		this.type = 'Line';

		this.geometry = geometry;
		this.material = material;

		this.updateMorphTargets();

	}

	copy( source ) {

		super.copy( source );

		this.material = source.material;
		this.geometry = source.geometry;

		return this;

	}

	computeLineDistances() {

		const geometry = this.geometry;

		if ( geometry.isBufferGeometry ) {

			// we assume non-indexed geometry

			if ( geometry.index === null ) {

				const positionAttribute = geometry.attributes.position;
				const lineDistances = [ 0 ];

				for ( let i = 1, l = positionAttribute.count; i < l; i ++ ) {

					_start$1.fromBufferAttribute( positionAttribute, i - 1 );
					_end$1.fromBufferAttribute( positionAttribute, i );

					lineDistances[ i ] = lineDistances[ i - 1 ];
					lineDistances[ i ] += _start$1.distanceTo( _end$1 );

				}

				geometry.setAttribute( 'lineDistance', new Float32BufferAttribute( lineDistances, 1 ) );

			} else {

				console.warn( 'THREE.Line.computeLineDistances(): Computation only possible with non-indexed BufferGeometry.' );

			}

		} else if ( geometry.isGeometry ) {

			console.error( 'THREE.Line.computeLineDistances() no longer supports THREE.Geometry. Use THREE.BufferGeometry instead.' );

		}

		return this;

	}

	raycast( raycaster, intersects ) {

		const geometry = this.geometry;
		const matrixWorld = this.matrixWorld;
		const threshold = raycaster.params.Line.threshold;
		const drawRange = geometry.drawRange;

		// Checking boundingSphere distance to ray

		if ( geometry.boundingSphere === null ) geometry.computeBoundingSphere();

		_sphere$1.copy( geometry.boundingSphere );
		_sphere$1.applyMatrix4( matrixWorld );
		_sphere$1.radius += threshold;

		if ( raycaster.ray.intersectsSphere( _sphere$1 ) === false ) return;

		//

		_inverseMatrix$1.copy( matrixWorld ).invert();
		_ray$1.copy( raycaster.ray ).applyMatrix4( _inverseMatrix$1 );

		const localThreshold = threshold / ( ( this.scale.x + this.scale.y + this.scale.z ) / 3 );
		const localThresholdSq = localThreshold * localThreshold;

		const vStart = new Vector3();
		const vEnd = new Vector3();
		const interSegment = new Vector3();
		const interRay = new Vector3();
		const step = this.isLineSegments ? 2 : 1;

		if ( geometry.isBufferGeometry ) {

			const index = geometry.index;
			const attributes = geometry.attributes;
			const positionAttribute = attributes.position;

			if ( index !== null ) {

				const start = Math.max( 0, drawRange.start );
				const end = Math.min( index.count, ( drawRange.start + drawRange.count ) );

				for ( let i = start, l = end - 1; i < l; i += step ) {

					const a = index.getX( i );
					const b = index.getX( i + 1 );

					vStart.fromBufferAttribute( positionAttribute, a );
					vEnd.fromBufferAttribute( positionAttribute, b );

					const distSq = _ray$1.distanceSqToSegment( vStart, vEnd, interRay, interSegment );

					if ( distSq > localThresholdSq ) continue;

					interRay.applyMatrix4( this.matrixWorld ); //Move back to world space for distance calculation

					const distance = raycaster.ray.origin.distanceTo( interRay );

					if ( distance < raycaster.near || distance > raycaster.far ) continue;

					intersects.push( {

						distance: distance,
						// What do we want? intersection point on the ray or on the segment??
						// point: raycaster.ray.at( distance ),
						point: interSegment.clone().applyMatrix4( this.matrixWorld ),
						index: i,
						face: null,
						faceIndex: null,
						object: this

					} );

				}

			} else {

				const start = Math.max( 0, drawRange.start );
				const end = Math.min( positionAttribute.count, ( drawRange.start + drawRange.count ) );

				for ( let i = start, l = end - 1; i < l; i += step ) {

					vStart.fromBufferAttribute( positionAttribute, i );
					vEnd.fromBufferAttribute( positionAttribute, i + 1 );

					const distSq = _ray$1.distanceSqToSegment( vStart, vEnd, interRay, interSegment );

					if ( distSq > localThresholdSq ) continue;

					interRay.applyMatrix4( this.matrixWorld ); //Move back to world space for distance calculation

					const distance = raycaster.ray.origin.distanceTo( interRay );

					if ( distance < raycaster.near || distance > raycaster.far ) continue;

					intersects.push( {

						distance: distance,
						// What do we want? intersection point on the ray or on the segment??
						// point: raycaster.ray.at( distance ),
						point: interSegment.clone().applyMatrix4( this.matrixWorld ),
						index: i,
						face: null,
						faceIndex: null,
						object: this

					} );

				}

			}

		} else if ( geometry.isGeometry ) {

			console.error( 'THREE.Line.raycast() no longer supports THREE.Geometry. Use THREE.BufferGeometry instead.' );

		}

	}

	updateMorphTargets() {

		const geometry = this.geometry;

		if ( geometry.isBufferGeometry ) {

			const morphAttributes = geometry.morphAttributes;
			const keys = Object.keys( morphAttributes );

			if ( keys.length > 0 ) {

				const morphAttribute = morphAttributes[ keys[ 0 ] ];

				if ( morphAttribute !== undefined ) {

					this.morphTargetInfluences = [];
					this.morphTargetDictionary = {};

					for ( let m = 0, ml = morphAttribute.length; m < ml; m ++ ) {

						const name = morphAttribute[ m ].name || String( m );

						this.morphTargetInfluences.push( 0 );
						this.morphTargetDictionary[ name ] = m;

					}

				}

			}

		} else {

			const morphTargets = geometry.morphTargets;

			if ( morphTargets !== undefined && morphTargets.length > 0 ) {

				console.error( 'THREE.Line.updateMorphTargets() does not support THREE.Geometry. Use THREE.BufferGeometry instead.' );

			}

		}

	}

}

Line.prototype.isLine = true;

const _start = /*@__PURE__*/ new Vector3();
const _end = /*@__PURE__*/ new Vector3();

class LineSegments extends Line {

	constructor( geometry, material ) {

		super( geometry, material );

		this.type = 'LineSegments';

	}

	computeLineDistances() {

		const geometry = this.geometry;

		if ( geometry.isBufferGeometry ) {

			// we assume non-indexed geometry

			if ( geometry.index === null ) {

				const positionAttribute = geometry.attributes.position;
				const lineDistances = [];

				for ( let i = 0, l = positionAttribute.count; i < l; i += 2 ) {

					_start.fromBufferAttribute( positionAttribute, i );
					_end.fromBufferAttribute( positionAttribute, i + 1 );

					lineDistances[ i ] = ( i === 0 ) ? 0 : lineDistances[ i - 1 ];
					lineDistances[ i + 1 ] = lineDistances[ i ] + _start.distanceTo( _end );

				}

				geometry.setAttribute( 'lineDistance', new Float32BufferAttribute( lineDistances, 1 ) );

			} else {

				console.warn( 'THREE.LineSegments.computeLineDistances(): Computation only possible with non-indexed BufferGeometry.' );

			}

		} else if ( geometry.isGeometry ) {

			console.error( 'THREE.LineSegments.computeLineDistances() no longer supports THREE.Geometry. Use THREE.BufferGeometry instead.' );

		}

		return this;

	}

}

LineSegments.prototype.isLineSegments = true;

class LineLoop extends Line {

	constructor( geometry, material ) {

		super( geometry, material );

		this.type = 'LineLoop';

	}

}

LineLoop.prototype.isLineLoop = true;

/**
 * parameters = {
 *  color: <hex>,
 *  opacity: <float>,
 *  map: new THREE.Texture( <Image> ),
 *  alphaMap: new THREE.Texture( <Image> ),
 *
 *  size: <float>,
 *  sizeAttenuation: <bool>
 *
 * }
 */

class PointsMaterial extends Material {

	constructor( parameters ) {

		super();

		this.type = 'PointsMaterial';

		this.color = new Color( 0xffffff );

		this.map = null;

		this.alphaMap = null;

		this.size = 1;
		this.sizeAttenuation = true;

		this.setValues( parameters );

	}

	copy( source ) {

		super.copy( source );

		this.color.copy( source.color );

		this.map = source.map;

		this.alphaMap = source.alphaMap;

		this.size = source.size;
		this.sizeAttenuation = source.sizeAttenuation;

		return this;

	}

}

PointsMaterial.prototype.isPointsMaterial = true;

const _inverseMatrix = /*@__PURE__*/ new Matrix4();
const _ray = /*@__PURE__*/ new Ray();
const _sphere = /*@__PURE__*/ new Sphere();
const _position$2 = /*@__PURE__*/ new Vector3();

class Points extends Object3D {

	constructor( geometry = new BufferGeometry(), material = new PointsMaterial() ) {

		super();

		this.type = 'Points';

		this.geometry = geometry;
		this.material = material;

		this.updateMorphTargets();

	}

	copy( source ) {

		super.copy( source );

		this.material = source.material;
		this.geometry = source.geometry;

		return this;

	}

	raycast( raycaster, intersects ) {

		const geometry = this.geometry;
		const matrixWorld = this.matrixWorld;
		const threshold = raycaster.params.Points.threshold;
		const drawRange = geometry.drawRange;

		// Checking boundingSphere distance to ray

		if ( geometry.boundingSphere === null ) geometry.computeBoundingSphere();

		_sphere.copy( geometry.boundingSphere );
		_sphere.applyMatrix4( matrixWorld );
		_sphere.radius += threshold;

		if ( raycaster.ray.intersectsSphere( _sphere ) === false ) return;

		//

		_inverseMatrix.copy( matrixWorld ).invert();
		_ray.copy( raycaster.ray ).applyMatrix4( _inverseMatrix );

		const localThreshold = threshold / ( ( this.scale.x + this.scale.y + this.scale.z ) / 3 );
		const localThresholdSq = localThreshold * localThreshold;

		if ( geometry.isBufferGeometry ) {

			const index = geometry.index;
			const attributes = geometry.attributes;
			const positionAttribute = attributes.position;

			if ( index !== null ) {

				const start = Math.max( 0, drawRange.start );
				const end = Math.min( index.count, ( drawRange.start + drawRange.count ) );

				for ( let i = start, il = end; i < il; i ++ ) {

					const a = index.getX( i );

					_position$2.fromBufferAttribute( positionAttribute, a );

					testPoint( _position$2, a, localThresholdSq, matrixWorld, raycaster, intersects, this );

				}

			} else {

				const start = Math.max( 0, drawRange.start );
				const end = Math.min( positionAttribute.count, ( drawRange.start + drawRange.count ) );

				for ( let i = start, l = end; i < l; i ++ ) {

					_position$2.fromBufferAttribute( positionAttribute, i );

					testPoint( _position$2, i, localThresholdSq, matrixWorld, raycaster, intersects, this );

				}

			}

		} else {

			console.error( 'THREE.Points.raycast() no longer supports THREE.Geometry. Use THREE.BufferGeometry instead.' );

		}

	}

	updateMorphTargets() {

		const geometry = this.geometry;

		if ( geometry.isBufferGeometry ) {

			const morphAttributes = geometry.morphAttributes;
			const keys = Object.keys( morphAttributes );

			if ( keys.length > 0 ) {

				const morphAttribute = morphAttributes[ keys[ 0 ] ];

				if ( morphAttribute !== undefined ) {

					this.morphTargetInfluences = [];
					this.morphTargetDictionary = {};

					for ( let m = 0, ml = morphAttribute.length; m < ml; m ++ ) {

						const name = morphAttribute[ m ].name || String( m );

						this.morphTargetInfluences.push( 0 );
						this.morphTargetDictionary[ name ] = m;

					}

				}

			}

		} else {

			const morphTargets = geometry.morphTargets;

			if ( morphTargets !== undefined && morphTargets.length > 0 ) {

				console.error( 'THREE.Points.updateMorphTargets() does not support THREE.Geometry. Use THREE.BufferGeometry instead.' );

			}

		}

	}

}

Points.prototype.isPoints = true;

function testPoint( point, index, localThresholdSq, matrixWorld, raycaster, intersects, object ) {

	const rayPointDistanceSq = _ray.distanceSqToPoint( point );

	if ( rayPointDistanceSq < localThresholdSq ) {

		const intersectPoint = new Vector3();

		_ray.closestPointToPoint( point, intersectPoint );
		intersectPoint.applyMatrix4( matrixWorld );

		const distance = raycaster.ray.origin.distanceTo( intersectPoint );

		if ( distance < raycaster.near || distance > raycaster.far ) return;

		intersects.push( {

			distance: distance,
			distanceToRay: Math.sqrt( rayPointDistanceSq ),
			point: intersectPoint,
			index: index,
			face: null,
			object: object

		} );

	}

}

class VideoTexture extends Texture {

	constructor( video, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy ) {

		super( video, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy );

		this.minFilter = minFilter !== undefined ? minFilter : LinearFilter;
		this.magFilter = magFilter !== undefined ? magFilter : LinearFilter;

		this.generateMipmaps = false;

		const scope = this;

		function updateVideo() {

			scope.needsUpdate = true;
			video.requestVideoFrameCallback( updateVideo );

		}

		if ( 'requestVideoFrameCallback' in video ) {

			video.requestVideoFrameCallback( updateVideo );

		}

	}

	clone() {

		return new this.constructor( this.image ).copy( this );

	}

	update() {

		const video = this.image;
		const hasVideoFrameCallback = 'requestVideoFrameCallback' in video;

		if ( hasVideoFrameCallback === false && video.readyState >= video.HAVE_CURRENT_DATA ) {

			this.needsUpdate = true;

		}

	}

}

VideoTexture.prototype.isVideoTexture = true;

class FramebufferTexture extends Texture {

	constructor( width, height, format ) {

		super( { width, height } );

		this.format = format;

		this.magFilter = NearestFilter;
		this.minFilter = NearestFilter;

		this.generateMipmaps = false;

		this.needsUpdate = true;

	}

}

FramebufferTexture.prototype.isFramebufferTexture = true;

class CompressedTexture extends Texture {

	constructor( mipmaps, width, height, format, type, mapping, wrapS, wrapT, magFilter, minFilter, anisotropy, encoding ) {

		super( null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding );

		this.image = { width: width, height: height };
		this.mipmaps = mipmaps;

		// no flipping for cube textures
		// (also flipping doesn't work for compressed textures )

		this.flipY = false;

		// can't generate mipmaps for compressed textures
		// mips must be embedded in DDS files

		this.generateMipmaps = false;

	}

}

CompressedTexture.prototype.isCompressedTexture = true;

class CanvasTexture extends Texture {

	constructor( canvas, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy ) {

		super( canvas, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy );

		this.needsUpdate = true;

	}

}

CanvasTexture.prototype.isCanvasTexture = true;

class CircleGeometry extends BufferGeometry {

	constructor( radius = 1, segments = 8, thetaStart = 0, thetaLength = Math.PI * 2 ) {

		super();

		this.type = 'CircleGeometry';

		this.parameters = {
			radius: radius,
			segments: segments,
			thetaStart: thetaStart,
			thetaLength: thetaLength
		};

		segments = Math.max( 3, segments );

		// buffers

		const indices = [];
		const vertices = [];
		const normals = [];
		const uvs = [];

		// helper variables

		const vertex = new Vector3();
		const uv = new Vector2();

		// center point

		vertices.push( 0, 0, 0 );
		normals.push( 0, 0, 1 );
		uvs.push( 0.5, 0.5 );

		for ( let s = 0, i = 3; s <= segments; s ++, i += 3 ) {

			const segment = thetaStart + s / segments * thetaLength;

			// vertex

			vertex.x = radius * Math.cos( segment );
			vertex.y = radius * Math.sin( segment );

			vertices.push( vertex.x, vertex.y, vertex.z );

			// normal

			normals.push( 0, 0, 1 );

			// uvs

			uv.x = ( vertices[ i ] / radius + 1 ) / 2;
			uv.y = ( vertices[ i + 1 ] / radius + 1 ) / 2;

			uvs.push( uv.x, uv.y );

		}

		// indices

		for ( let i = 1; i <= segments; i ++ ) {

			indices.push( i, i + 1, 0 );

		}

		// build geometry

		this.setIndex( indices );
		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );

	}

	static fromJSON( data ) {

		return new CircleGeometry( data.radius, data.segments, data.thetaStart, data.thetaLength );

	}

}

class CylinderGeometry extends BufferGeometry {

	constructor( radiusTop = 1, radiusBottom = 1, height = 1, radialSegments = 8, heightSegments = 1, openEnded = false, thetaStart = 0, thetaLength = Math.PI * 2 ) {

		super();
		this.type = 'CylinderGeometry';

		this.parameters = {
			radiusTop: radiusTop,
			radiusBottom: radiusBottom,
			height: height,
			radialSegments: radialSegments,
			heightSegments: heightSegments,
			openEnded: openEnded,
			thetaStart: thetaStart,
			thetaLength: thetaLength
		};

		const scope = this;

		radialSegments = Math.floor( radialSegments );
		heightSegments = Math.floor( heightSegments );

		// buffers

		const indices = [];
		const vertices = [];
		const normals = [];
		const uvs = [];

		// helper variables

		let index = 0;
		const indexArray = [];
		const halfHeight = height / 2;
		let groupStart = 0;

		// generate geometry

		generateTorso();

		if ( openEnded === false ) {

			if ( radiusTop > 0 ) generateCap( true );
			if ( radiusBottom > 0 ) generateCap( false );

		}

		// build geometry

		this.setIndex( indices );
		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );

		function generateTorso() {

			const normal = new Vector3();
			const vertex = new Vector3();

			let groupCount = 0;

			// this will be used to calculate the normal
			const slope = ( radiusBottom - radiusTop ) / height;

			// generate vertices, normals and uvs

			for ( let y = 0; y <= heightSegments; y ++ ) {

				const indexRow = [];

				const v = y / heightSegments;

				// calculate the radius of the current row

				const radius = v * ( radiusBottom - radiusTop ) + radiusTop;

				for ( let x = 0; x <= radialSegments; x ++ ) {

					const u = x / radialSegments;

					const theta = u * thetaLength + thetaStart;

					const sinTheta = Math.sin( theta );
					const cosTheta = Math.cos( theta );

					// vertex

					vertex.x = radius * sinTheta;
					vertex.y = - v * height + halfHeight;
					vertex.z = radius * cosTheta;
					vertices.push( vertex.x, vertex.y, vertex.z );

					// normal

					normal.set( sinTheta, slope, cosTheta ).normalize();
					normals.push( normal.x, normal.y, normal.z );

					// uv

					uvs.push( u, 1 - v );

					// save index of vertex in respective row

					indexRow.push( index ++ );

				}

				// now save vertices of the row in our index array

				indexArray.push( indexRow );

			}

			// generate indices

			for ( let x = 0; x < radialSegments; x ++ ) {

				for ( let y = 0; y < heightSegments; y ++ ) {

					// we use the index array to access the correct indices

					const a = indexArray[ y ][ x ];
					const b = indexArray[ y + 1 ][ x ];
					const c = indexArray[ y + 1 ][ x + 1 ];
					const d = indexArray[ y ][ x + 1 ];

					// faces

					indices.push( a, b, d );
					indices.push( b, c, d );

					// update group counter

					groupCount += 6;

				}

			}

			// add a group to the geometry. this will ensure multi material support

			scope.addGroup( groupStart, groupCount, 0 );

			// calculate new start value for groups

			groupStart += groupCount;

		}

		function generateCap( top ) {

			// save the index of the first center vertex
			const centerIndexStart = index;

			const uv = new Vector2();
			const vertex = new Vector3();

			let groupCount = 0;

			const radius = ( top === true ) ? radiusTop : radiusBottom;
			const sign = ( top === true ) ? 1 : - 1;

			// first we generate the center vertex data of the cap.
			// because the geometry needs one set of uvs per face,
			// we must generate a center vertex per face/segment

			for ( let x = 1; x <= radialSegments; x ++ ) {

				// vertex

				vertices.push( 0, halfHeight * sign, 0 );

				// normal

				normals.push( 0, sign, 0 );

				// uv

				uvs.push( 0.5, 0.5 );

				// increase index

				index ++;

			}

			// save the index of the last center vertex
			const centerIndexEnd = index;

			// now we generate the surrounding vertices, normals and uvs

			for ( let x = 0; x <= radialSegments; x ++ ) {

				const u = x / radialSegments;
				const theta = u * thetaLength + thetaStart;

				const cosTheta = Math.cos( theta );
				const sinTheta = Math.sin( theta );

				// vertex

				vertex.x = radius * sinTheta;
				vertex.y = halfHeight * sign;
				vertex.z = radius * cosTheta;
				vertices.push( vertex.x, vertex.y, vertex.z );

				// normal

				normals.push( 0, sign, 0 );

				// uv

				uv.x = ( cosTheta * 0.5 ) + 0.5;
				uv.y = ( sinTheta * 0.5 * sign ) + 0.5;
				uvs.push( uv.x, uv.y );

				// increase index

				index ++;

			}

			// generate indices

			for ( let x = 0; x < radialSegments; x ++ ) {

				const c = centerIndexStart + x;
				const i = centerIndexEnd + x;

				if ( top === true ) {

					// face top

					indices.push( i, i + 1, c );

				} else {

					// face bottom

					indices.push( i + 1, i, c );

				}

				groupCount += 3;

			}

			// add a group to the geometry. this will ensure multi material support

			scope.addGroup( groupStart, groupCount, top === true ? 1 : 2 );

			// calculate new start value for groups

			groupStart += groupCount;

		}

	}

	static fromJSON( data ) {

		return new CylinderGeometry( data.radiusTop, data.radiusBottom, data.height, data.radialSegments, data.heightSegments, data.openEnded, data.thetaStart, data.thetaLength );

	}

}

class ConeGeometry extends CylinderGeometry {

	constructor( radius = 1, height = 1, radialSegments = 8, heightSegments = 1, openEnded = false, thetaStart = 0, thetaLength = Math.PI * 2 ) {

		super( 0, radius, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength );

		this.type = 'ConeGeometry';

		this.parameters = {
			radius: radius,
			height: height,
			radialSegments: radialSegments,
			heightSegments: heightSegments,
			openEnded: openEnded,
			thetaStart: thetaStart,
			thetaLength: thetaLength
		};

	}

	static fromJSON( data ) {

		return new ConeGeometry( data.radius, data.height, data.radialSegments, data.heightSegments, data.openEnded, data.thetaStart, data.thetaLength );

	}

}

class PolyhedronGeometry extends BufferGeometry {

	constructor( vertices = [], indices = [], radius = 1, detail = 0 ) {

		super();

		this.type = 'PolyhedronGeometry';

		this.parameters = {
			vertices: vertices,
			indices: indices,
			radius: radius,
			detail: detail
		};

		// default buffer data

		const vertexBuffer = [];
		const uvBuffer = [];

		// the subdivision creates the vertex buffer data

		subdivide( detail );

		// all vertices should lie on a conceptual sphere with a given radius

		applyRadius( radius );

		// finally, create the uv data

		generateUVs();

		// build non-indexed geometry

		this.setAttribute( 'position', new Float32BufferAttribute( vertexBuffer, 3 ) );
		this.setAttribute( 'normal', new Float32BufferAttribute( vertexBuffer.slice(), 3 ) );
		this.setAttribute( 'uv', new Float32BufferAttribute( uvBuffer, 2 ) );

		if ( detail === 0 ) {

			this.computeVertexNormals(); // flat normals

		} else {

			this.normalizeNormals(); // smooth normals

		}

		// helper functions

		function subdivide( detail ) {

			const a = new Vector3();
			const b = new Vector3();
			const c = new Vector3();

			// iterate over all faces and apply a subdivison with the given detail value

			for ( let i = 0; i < indices.length; i += 3 ) {

				// get the vertices of the face

				getVertexByIndex( indices[ i + 0 ], a );
				getVertexByIndex( indices[ i + 1 ], b );
				getVertexByIndex( indices[ i + 2 ], c );

				// perform subdivision

				subdivideFace( a, b, c, detail );

			}

		}

		function subdivideFace( a, b, c, detail ) {

			const cols = detail + 1;

			// we use this multidimensional array as a data structure for creating the subdivision

			const v = [];

			// construct all of the vertices for this subdivision

			for ( let i = 0; i <= cols; i ++ ) {

				v[ i ] = [];

				const aj = a.clone().lerp( c, i / cols );
				const bj = b.clone().lerp( c, i / cols );

				const rows = cols - i;

				for ( let j = 0; j <= rows; j ++ ) {

					if ( j === 0 && i === cols ) {

						v[ i ][ j ] = aj;

					} else {

						v[ i ][ j ] = aj.clone().lerp( bj, j / rows );

					}

				}

			}

			// construct all of the faces

			for ( let i = 0; i < cols; i ++ ) {

				for ( let j = 0; j < 2 * ( cols - i ) - 1; j ++ ) {

					const k = Math.floor( j / 2 );

					if ( j % 2 === 0 ) {

						pushVertex( v[ i ][ k + 1 ] );
						pushVertex( v[ i + 1 ][ k ] );
						pushVertex( v[ i ][ k ] );

					} else {

						pushVertex( v[ i ][ k + 1 ] );
						pushVertex( v[ i + 1 ][ k + 1 ] );
						pushVertex( v[ i + 1 ][ k ] );

					}

				}

			}

		}

		function applyRadius( radius ) {

			const vertex = new Vector3();

			// iterate over the entire buffer and apply the radius to each vertex

			for ( let i = 0; i < vertexBuffer.length; i += 3 ) {

				vertex.x = vertexBuffer[ i + 0 ];
				vertex.y = vertexBuffer[ i + 1 ];
				vertex.z = vertexBuffer[ i + 2 ];

				vertex.normalize().multiplyScalar( radius );

				vertexBuffer[ i + 0 ] = vertex.x;
				vertexBuffer[ i + 1 ] = vertex.y;
				vertexBuffer[ i + 2 ] = vertex.z;

			}

		}

		function generateUVs() {

			const vertex = new Vector3();

			for ( let i = 0; i < vertexBuffer.length; i += 3 ) {

				vertex.x = vertexBuffer[ i + 0 ];
				vertex.y = vertexBuffer[ i + 1 ];
				vertex.z = vertexBuffer[ i + 2 ];

				const u = azimuth( vertex ) / 2 / Math.PI + 0.5;
				const v = inclination( vertex ) / Math.PI + 0.5;
				uvBuffer.push( u, 1 - v );

			}

			correctUVs();

			correctSeam();

		}

		function correctSeam() {

			// handle case when face straddles the seam, see #3269

			for ( let i = 0; i < uvBuffer.length; i += 6 ) {

				// uv data of a single face

				const x0 = uvBuffer[ i + 0 ];
				const x1 = uvBuffer[ i + 2 ];
				const x2 = uvBuffer[ i + 4 ];

				const max = Math.max( x0, x1, x2 );
				const min = Math.min( x0, x1, x2 );

				// 0.9 is somewhat arbitrary

				if ( max > 0.9 && min < 0.1 ) {

					if ( x0 < 0.2 ) uvBuffer[ i + 0 ] += 1;
					if ( x1 < 0.2 ) uvBuffer[ i + 2 ] += 1;
					if ( x2 < 0.2 ) uvBuffer[ i + 4 ] += 1;

				}

			}

		}

		function pushVertex( vertex ) {

			vertexBuffer.push( vertex.x, vertex.y, vertex.z );

		}

		function getVertexByIndex( index, vertex ) {

			const stride = index * 3;

			vertex.x = vertices[ stride + 0 ];
			vertex.y = vertices[ stride + 1 ];
			vertex.z = vertices[ stride + 2 ];

		}

		function correctUVs() {

			const a = new Vector3();
			const b = new Vector3();
			const c = new Vector3();

			const centroid = new Vector3();

			const uvA = new Vector2();
			const uvB = new Vector2();
			const uvC = new Vector2();

			for ( let i = 0, j = 0; i < vertexBuffer.length; i += 9, j += 6 ) {

				a.set( vertexBuffer[ i + 0 ], vertexBuffer[ i + 1 ], vertexBuffer[ i + 2 ] );
				b.set( vertexBuffer[ i + 3 ], vertexBuffer[ i + 4 ], vertexBuffer[ i + 5 ] );
				c.set( vertexBuffer[ i + 6 ], vertexBuffer[ i + 7 ], vertexBuffer[ i + 8 ] );

				uvA.set( uvBuffer[ j + 0 ], uvBuffer[ j + 1 ] );
				uvB.set( uvBuffer[ j + 2 ], uvBuffer[ j + 3 ] );
				uvC.set( uvBuffer[ j + 4 ], uvBuffer[ j + 5 ] );

				centroid.copy( a ).add( b ).add( c ).divideScalar( 3 );

				const azi = azimuth( centroid );

				correctUV( uvA, j + 0, a, azi );
				correctUV( uvB, j + 2, b, azi );
				correctUV( uvC, j + 4, c, azi );

			}

		}

		function correctUV( uv, stride, vector, azimuth ) {

			if ( ( azimuth < 0 ) && ( uv.x === 1 ) ) {

				uvBuffer[ stride ] = uv.x - 1;

			}

			if ( ( vector.x === 0 ) && ( vector.z === 0 ) ) {

				uvBuffer[ stride ] = azimuth / 2 / Math.PI + 0.5;

			}

		}

		// Angle around the Y axis, counter-clockwise when looking from above.

		function azimuth( vector ) {

			return Math.atan2( vector.z, - vector.x );

		}


		// Angle above the XZ plane.

		function inclination( vector ) {

			return Math.atan2( - vector.y, Math.sqrt( ( vector.x * vector.x ) + ( vector.z * vector.z ) ) );

		}

	}

	static fromJSON( data ) {

		return new PolyhedronGeometry( data.vertices, data.indices, data.radius, data.details );

	}

}

class DodecahedronGeometry extends PolyhedronGeometry {

	constructor( radius = 1, detail = 0 ) {

		const t = ( 1 + Math.sqrt( 5 ) ) / 2;
		const r = 1 / t;

		const vertices = [

			// (±1, ±1, ±1)
			- 1, - 1, - 1,	- 1, - 1, 1,
			- 1, 1, - 1, - 1, 1, 1,
			1, - 1, - 1, 1, - 1, 1,
			1, 1, - 1, 1, 1, 1,

			// (0, ±1/φ, ±φ)
			0, - r, - t, 0, - r, t,
			0, r, - t, 0, r, t,

			// (±1/φ, ±φ, 0)
			- r, - t, 0, - r, t, 0,
			r, - t, 0, r, t, 0,

			// (±φ, 0, ±1/φ)
			- t, 0, - r, t, 0, - r,
			- t, 0, r, t, 0, r
		];

		const indices = [
			3, 11, 7, 	3, 7, 15, 	3, 15, 13,
			7, 19, 17, 	7, 17, 6, 	7, 6, 15,
			17, 4, 8, 	17, 8, 10, 	17, 10, 6,
			8, 0, 16, 	8, 16, 2, 	8, 2, 10,
			0, 12, 1, 	0, 1, 18, 	0, 18, 16,
			6, 10, 2, 	6, 2, 13, 	6, 13, 15,
			2, 16, 18, 	2, 18, 3, 	2, 3, 13,
			18, 1, 9, 	18, 9, 11, 	18, 11, 3,
			4, 14, 12, 	4, 12, 0, 	4, 0, 8,
			11, 9, 5, 	11, 5, 19, 	11, 19, 7,
			19, 5, 14, 	19, 14, 4, 	19, 4, 17,
			1, 12, 14, 	1, 14, 5, 	1, 5, 9
		];

		super( vertices, indices, radius, detail );

		this.type = 'DodecahedronGeometry';

		this.parameters = {
			radius: radius,
			detail: detail
		};

	}

	static fromJSON( data ) {

		return new DodecahedronGeometry( data.radius, data.detail );

	}

}

const _v0 = new Vector3();
const _v1$1 = new Vector3();
const _normal = new Vector3();
const _triangle = new Triangle();

class EdgesGeometry extends BufferGeometry {

	constructor( geometry = null, thresholdAngle = 1 ) {

		super();
		this.type = 'EdgesGeometry';

		this.parameters = {
			geometry: geometry,
			thresholdAngle: thresholdAngle
		};

		if ( geometry !== null ) {

			const precisionPoints = 4;
			const precision = Math.pow( 10, precisionPoints );
			const thresholdDot = Math.cos( DEG2RAD * thresholdAngle );

			const indexAttr = geometry.getIndex();
			const positionAttr = geometry.getAttribute( 'position' );
			const indexCount = indexAttr ? indexAttr.count : positionAttr.count;

			const indexArr = [ 0, 0, 0 ];
			const vertKeys = [ 'a', 'b', 'c' ];
			const hashes = new Array( 3 );

			const edgeData = {};
			const vertices = [];
			for ( let i = 0; i < indexCount; i += 3 ) {

				if ( indexAttr ) {

					indexArr[ 0 ] = indexAttr.getX( i );
					indexArr[ 1 ] = indexAttr.getX( i + 1 );
					indexArr[ 2 ] = indexAttr.getX( i + 2 );

				} else {

					indexArr[ 0 ] = i;
					indexArr[ 1 ] = i + 1;
					indexArr[ 2 ] = i + 2;

				}

				const { a, b, c } = _triangle;
				a.fromBufferAttribute( positionAttr, indexArr[ 0 ] );
				b.fromBufferAttribute( positionAttr, indexArr[ 1 ] );
				c.fromBufferAttribute( positionAttr, indexArr[ 2 ] );
				_triangle.getNormal( _normal );

				// create hashes for the edge from the vertices
				hashes[ 0 ] = `${ Math.round( a.x * precision ) },${ Math.round( a.y * precision ) },${ Math.round( a.z * precision ) }`;
				hashes[ 1 ] = `${ Math.round( b.x * precision ) },${ Math.round( b.y * precision ) },${ Math.round( b.z * precision ) }`;
				hashes[ 2 ] = `${ Math.round( c.x * precision ) },${ Math.round( c.y * precision ) },${ Math.round( c.z * precision ) }`;

				// skip degenerate triangles
				if ( hashes[ 0 ] === hashes[ 1 ] || hashes[ 1 ] === hashes[ 2 ] || hashes[ 2 ] === hashes[ 0 ] ) {

					continue;

				}

				// iterate over every edge
				for ( let j = 0; j < 3; j ++ ) {

					// get the first and next vertex making up the edge
					const jNext = ( j + 1 ) % 3;
					const vecHash0 = hashes[ j ];
					const vecHash1 = hashes[ jNext ];
					const v0 = _triangle[ vertKeys[ j ] ];
					const v1 = _triangle[ vertKeys[ jNext ] ];

					const hash = `${ vecHash0 }_${ vecHash1 }`;
					const reverseHash = `${ vecHash1 }_${ vecHash0 }`;

					if ( reverseHash in edgeData && edgeData[ reverseHash ] ) {

						// if we found a sibling edge add it into the vertex array if
						// it meets the angle threshold and delete the edge from the map.
						if ( _normal.dot( edgeData[ reverseHash ].normal ) <= thresholdDot ) {

							vertices.push( v0.x, v0.y, v0.z );
							vertices.push( v1.x, v1.y, v1.z );

						}

						edgeData[ reverseHash ] = null;

					} else if ( ! ( hash in edgeData ) ) {

						// if we've already got an edge here then skip adding a new one
						edgeData[ hash ] = {

							index0: indexArr[ j ],
							index1: indexArr[ jNext ],
							normal: _normal.clone(),

						};

					}

				}

			}

			// iterate over all remaining, unmatched edges and add them to the vertex array
			for ( const key in edgeData ) {

				if ( edgeData[ key ] ) {

					const { index0, index1 } = edgeData[ key ];
					_v0.fromBufferAttribute( positionAttr, index0 );
					_v1$1.fromBufferAttribute( positionAttr, index1 );

					vertices.push( _v0.x, _v0.y, _v0.z );
					vertices.push( _v1$1.x, _v1$1.y, _v1$1.z );

				}

			}

			this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );

		}

	}

}

/**
 * Extensible curve object.
 *
 * Some common of curve methods:
 * .getPoint( t, optionalTarget ), .getTangent( t, optionalTarget )
 * .getPointAt( u, optionalTarget ), .getTangentAt( u, optionalTarget )
 * .getPoints(), .getSpacedPoints()
 * .getLength()
 * .updateArcLengths()
 *
 * This following curves inherit from THREE.Curve:
 *
 * -- 2D curves --
 * THREE.ArcCurve
 * THREE.CubicBezierCurve
 * THREE.EllipseCurve
 * THREE.LineCurve
 * THREE.QuadraticBezierCurve
 * THREE.SplineCurve
 *
 * -- 3D curves --
 * THREE.CatmullRomCurve3
 * THREE.CubicBezierCurve3
 * THREE.LineCurve3
 * THREE.QuadraticBezierCurve3
 *
 * A series of curves can be represented as a THREE.CurvePath.
 *
 **/

class Curve {

	constructor() {

		this.type = 'Curve';

		this.arcLengthDivisions = 200;

	}

	// Virtual base class method to overwrite and implement in subclasses
	//	- t [0 .. 1]

	getPoint( /* t, optionalTarget */ ) {

		console.warn( 'THREE.Curve: .getPoint() not implemented.' );
		return null;

	}

	// Get point at relative position in curve according to arc length
	// - u [0 .. 1]

	getPointAt( u, optionalTarget ) {

		const t = this.getUtoTmapping( u );
		return this.getPoint( t, optionalTarget );

	}

	// Get sequence of points using getPoint( t )

	getPoints( divisions = 5 ) {

		const points = [];

		for ( let d = 0; d <= divisions; d ++ ) {

			points.push( this.getPoint( d / divisions ) );

		}

		return points;

	}

	// Get sequence of points using getPointAt( u )

	getSpacedPoints( divisions = 5 ) {

		const points = [];

		for ( let d = 0; d <= divisions; d ++ ) {

			points.push( this.getPointAt( d / divisions ) );

		}

		return points;

	}

	// Get total curve arc length

	getLength() {

		const lengths = this.getLengths();
		return lengths[ lengths.length - 1 ];

	}

	// Get list of cumulative segment lengths

	getLengths( divisions = this.arcLengthDivisions ) {

		if ( this.cacheArcLengths &&
			( this.cacheArcLengths.length === divisions + 1 ) &&
			! this.needsUpdate ) {

			return this.cacheArcLengths;

		}

		this.needsUpdate = false;

		const cache = [];
		let current, last = this.getPoint( 0 );
		let sum = 0;

		cache.push( 0 );

		for ( let p = 1; p <= divisions; p ++ ) {

			current = this.getPoint( p / divisions );
			sum += current.distanceTo( last );
			cache.push( sum );
			last = current;

		}

		this.cacheArcLengths = cache;

		return cache; // { sums: cache, sum: sum }; Sum is in the last element.

	}

	updateArcLengths() {

		this.needsUpdate = true;
		this.getLengths();

	}

	// Given u ( 0 .. 1 ), get a t to find p. This gives you points which are equidistant

	getUtoTmapping( u, distance ) {

		const arcLengths = this.getLengths();

		let i = 0;
		const il = arcLengths.length;

		let targetArcLength; // The targeted u distance value to get

		if ( distance ) {

			targetArcLength = distance;

		} else {

			targetArcLength = u * arcLengths[ il - 1 ];

		}

		// binary search for the index with largest value smaller than target u distance

		let low = 0, high = il - 1, comparison;

		while ( low <= high ) {

			i = Math.floor( low + ( high - low ) / 2 ); // less likely to overflow, though probably not issue here, JS doesn't really have integers, all numbers are floats

			comparison = arcLengths[ i ] - targetArcLength;

			if ( comparison < 0 ) {

				low = i + 1;

			} else if ( comparison > 0 ) {

				high = i - 1;

			} else {

				high = i;
				break;

				// DONE

			}

		}

		i = high;

		if ( arcLengths[ i ] === targetArcLength ) {

			return i / ( il - 1 );

		}

		// we could get finer grain at lengths, or use simple interpolation between two points

		const lengthBefore = arcLengths[ i ];
		const lengthAfter = arcLengths[ i + 1 ];

		const segmentLength = lengthAfter - lengthBefore;

		// determine where we are between the 'before' and 'after' points

		const segmentFraction = ( targetArcLength - lengthBefore ) / segmentLength;

		// add that fractional amount to t

		const t = ( i + segmentFraction ) / ( il - 1 );

		return t;

	}

	// Returns a unit vector tangent at t
	// In case any sub curve does not implement its tangent derivation,
	// 2 points a small delta apart will be used to find its gradient
	// which seems to give a reasonable approximation

	getTangent( t, optionalTarget ) {

		const delta = 0.0001;
		let t1 = t - delta;
		let t2 = t + delta;

		// Capping in case of danger

		if ( t1 < 0 ) t1 = 0;
		if ( t2 > 1 ) t2 = 1;

		const pt1 = this.getPoint( t1 );
		const pt2 = this.getPoint( t2 );

		const tangent = optionalTarget || ( ( pt1.isVector2 ) ? new Vector2() : new Vector3() );

		tangent.copy( pt2 ).sub( pt1 ).normalize();

		return tangent;

	}

	getTangentAt( u, optionalTarget ) {

		const t = this.getUtoTmapping( u );
		return this.getTangent( t, optionalTarget );

	}

	computeFrenetFrames( segments, closed ) {

		// see http://www.cs.indiana.edu/pub/techreports/TR425.pdf

		const normal = new Vector3();

		const tangents = [];
		const normals = [];
		const binormals = [];

		const vec = new Vector3();
		const mat = new Matrix4();

		// compute the tangent vectors for each segment on the curve

		for ( let i = 0; i <= segments; i ++ ) {

			const u = i / segments;

			tangents[ i ] = this.getTangentAt( u, new Vector3() );

		}

		// select an initial normal vector perpendicular to the first tangent vector,
		// and in the direction of the minimum tangent xyz component

		normals[ 0 ] = new Vector3();
		binormals[ 0 ] = new Vector3();
		let min = Number.MAX_VALUE;
		const tx = Math.abs( tangents[ 0 ].x );
		const ty = Math.abs( tangents[ 0 ].y );
		const tz = Math.abs( tangents[ 0 ].z );

		if ( tx <= min ) {

			min = tx;
			normal.set( 1, 0, 0 );

		}

		if ( ty <= min ) {

			min = ty;
			normal.set( 0, 1, 0 );

		}

		if ( tz <= min ) {

			normal.set( 0, 0, 1 );

		}

		vec.crossVectors( tangents[ 0 ], normal ).normalize();

		normals[ 0 ].crossVectors( tangents[ 0 ], vec );
		binormals[ 0 ].crossVectors( tangents[ 0 ], normals[ 0 ] );


		// compute the slowly-varying normal and binormal vectors for each segment on the curve

		for ( let i = 1; i <= segments; i ++ ) {

			normals[ i ] = normals[ i - 1 ].clone();

			binormals[ i ] = binormals[ i - 1 ].clone();

			vec.crossVectors( tangents[ i - 1 ], tangents[ i ] );

			if ( vec.length() > Number.EPSILON ) {

				vec.normalize();

				const theta = Math.acos( clamp$1( tangents[ i - 1 ].dot( tangents[ i ] ), - 1, 1 ) ); // clamp for floating pt errors

				normals[ i ].applyMatrix4( mat.makeRotationAxis( vec, theta ) );

			}

			binormals[ i ].crossVectors( tangents[ i ], normals[ i ] );

		}

		// if the curve is closed, postprocess the vectors so the first and last normal vectors are the same

		if ( closed === true ) {

			let theta = Math.acos( clamp$1( normals[ 0 ].dot( normals[ segments ] ), - 1, 1 ) );
			theta /= segments;

			if ( tangents[ 0 ].dot( vec.crossVectors( normals[ 0 ], normals[ segments ] ) ) > 0 ) {

				theta = - theta;

			}

			for ( let i = 1; i <= segments; i ++ ) {

				// twist a little...
				normals[ i ].applyMatrix4( mat.makeRotationAxis( tangents[ i ], theta * i ) );
				binormals[ i ].crossVectors( tangents[ i ], normals[ i ] );

			}

		}

		return {
			tangents: tangents,
			normals: normals,
			binormals: binormals
		};

	}

	clone() {

		return new this.constructor().copy( this );

	}

	copy( source ) {

		this.arcLengthDivisions = source.arcLengthDivisions;

		return this;

	}

	toJSON() {

		const data = {
			metadata: {
				version: 4.5,
				type: 'Curve',
				generator: 'Curve.toJSON'
			}
		};

		data.arcLengthDivisions = this.arcLengthDivisions;
		data.type = this.type;

		return data;

	}

	fromJSON( json ) {

		this.arcLengthDivisions = json.arcLengthDivisions;

		return this;

	}

}

class EllipseCurve extends Curve {

	constructor( aX = 0, aY = 0, xRadius = 1, yRadius = 1, aStartAngle = 0, aEndAngle = Math.PI * 2, aClockwise = false, aRotation = 0 ) {

		super();

		this.type = 'EllipseCurve';

		this.aX = aX;
		this.aY = aY;

		this.xRadius = xRadius;
		this.yRadius = yRadius;

		this.aStartAngle = aStartAngle;
		this.aEndAngle = aEndAngle;

		this.aClockwise = aClockwise;

		this.aRotation = aRotation;

	}

	getPoint( t, optionalTarget ) {

		const point = optionalTarget || new Vector2();

		const twoPi = Math.PI * 2;
		let deltaAngle = this.aEndAngle - this.aStartAngle;
		const samePoints = Math.abs( deltaAngle ) < Number.EPSILON;

		// ensures that deltaAngle is 0 .. 2 PI
		while ( deltaAngle < 0 ) deltaAngle += twoPi;
		while ( deltaAngle > twoPi ) deltaAngle -= twoPi;

		if ( deltaAngle < Number.EPSILON ) {

			if ( samePoints ) {

				deltaAngle = 0;

			} else {

				deltaAngle = twoPi;

			}

		}

		if ( this.aClockwise === true && ! samePoints ) {

			if ( deltaAngle === twoPi ) {

				deltaAngle = - twoPi;

			} else {

				deltaAngle = deltaAngle - twoPi;

			}

		}

		const angle = this.aStartAngle + t * deltaAngle;
		let x = this.aX + this.xRadius * Math.cos( angle );
		let y = this.aY + this.yRadius * Math.sin( angle );

		if ( this.aRotation !== 0 ) {

			const cos = Math.cos( this.aRotation );
			const sin = Math.sin( this.aRotation );

			const tx = x - this.aX;
			const ty = y - this.aY;

			// Rotate the point about the center of the ellipse.
			x = tx * cos - ty * sin + this.aX;
			y = tx * sin + ty * cos + this.aY;

		}

		return point.set( x, y );

	}

	copy( source ) {

		super.copy( source );

		this.aX = source.aX;
		this.aY = source.aY;

		this.xRadius = source.xRadius;
		this.yRadius = source.yRadius;

		this.aStartAngle = source.aStartAngle;
		this.aEndAngle = source.aEndAngle;

		this.aClockwise = source.aClockwise;

		this.aRotation = source.aRotation;

		return this;

	}

	toJSON() {

		const data = super.toJSON();

		data.aX = this.aX;
		data.aY = this.aY;

		data.xRadius = this.xRadius;
		data.yRadius = this.yRadius;

		data.aStartAngle = this.aStartAngle;
		data.aEndAngle = this.aEndAngle;

		data.aClockwise = this.aClockwise;

		data.aRotation = this.aRotation;

		return data;

	}

	fromJSON( json ) {

		super.fromJSON( json );

		this.aX = json.aX;
		this.aY = json.aY;

		this.xRadius = json.xRadius;
		this.yRadius = json.yRadius;

		this.aStartAngle = json.aStartAngle;
		this.aEndAngle = json.aEndAngle;

		this.aClockwise = json.aClockwise;

		this.aRotation = json.aRotation;

		return this;

	}

}

EllipseCurve.prototype.isEllipseCurve = true;

class ArcCurve extends EllipseCurve {

	constructor( aX, aY, aRadius, aStartAngle, aEndAngle, aClockwise ) {

		super( aX, aY, aRadius, aRadius, aStartAngle, aEndAngle, aClockwise );

		this.type = 'ArcCurve';

	}

}

ArcCurve.prototype.isArcCurve = true;

/**
 * Centripetal CatmullRom Curve - which is useful for avoiding
 * cusps and self-intersections in non-uniform catmull rom curves.
 * http://www.cemyuksel.com/research/catmullrom_param/catmullrom.pdf
 *
 * curve.type accepts centripetal(default), chordal and catmullrom
 * curve.tension is used for catmullrom which defaults to 0.5
 */


/*
Based on an optimized c++ solution in
 - http://stackoverflow.com/questions/9489736/catmull-rom-curve-with-no-cusps-and-no-self-intersections/
 - http://ideone.com/NoEbVM

This CubicPoly class could be used for reusing some variables and calculations,
but for three.js curve use, it could be possible inlined and flatten into a single function call
which can be placed in CurveUtils.
*/

function CubicPoly() {

	let c0 = 0, c1 = 0, c2 = 0, c3 = 0;

	/*
	 * Compute coefficients for a cubic polynomial
	 *   p(s) = c0 + c1*s + c2*s^2 + c3*s^3
	 * such that
	 *   p(0) = x0, p(1) = x1
	 *  and
	 *   p'(0) = t0, p'(1) = t1.
	 */
	function init( x0, x1, t0, t1 ) {

		c0 = x0;
		c1 = t0;
		c2 = - 3 * x0 + 3 * x1 - 2 * t0 - t1;
		c3 = 2 * x0 - 2 * x1 + t0 + t1;

	}

	return {

		initCatmullRom: function ( x0, x1, x2, x3, tension ) {

			init( x1, x2, tension * ( x2 - x0 ), tension * ( x3 - x1 ) );

		},

		initNonuniformCatmullRom: function ( x0, x1, x2, x3, dt0, dt1, dt2 ) {

			// compute tangents when parameterized in [t1,t2]
			let t1 = ( x1 - x0 ) / dt0 - ( x2 - x0 ) / ( dt0 + dt1 ) + ( x2 - x1 ) / dt1;
			let t2 = ( x2 - x1 ) / dt1 - ( x3 - x1 ) / ( dt1 + dt2 ) + ( x3 - x2 ) / dt2;

			// rescale tangents for parametrization in [0,1]
			t1 *= dt1;
			t2 *= dt1;

			init( x1, x2, t1, t2 );

		},

		calc: function ( t ) {

			const t2 = t * t;
			const t3 = t2 * t;
			return c0 + c1 * t + c2 * t2 + c3 * t3;

		}

	};

}

//

const tmp = new Vector3();
const px = new CubicPoly(), py = new CubicPoly(), pz = new CubicPoly();

class CatmullRomCurve3 extends Curve {

	constructor( points = [], closed = false, curveType = 'centripetal', tension = 0.5 ) {

		super();

		this.type = 'CatmullRomCurve3';

		this.points = points;
		this.closed = closed;
		this.curveType = curveType;
		this.tension = tension;

	}

	getPoint( t, optionalTarget = new Vector3() ) {

		const point = optionalTarget;

		const points = this.points;
		const l = points.length;

		const p = ( l - ( this.closed ? 0 : 1 ) ) * t;
		let intPoint = Math.floor( p );
		let weight = p - intPoint;

		if ( this.closed ) {

			intPoint += intPoint > 0 ? 0 : ( Math.floor( Math.abs( intPoint ) / l ) + 1 ) * l;

		} else if ( weight === 0 && intPoint === l - 1 ) {

			intPoint = l - 2;
			weight = 1;

		}

		let p0, p3; // 4 points (p1 & p2 defined below)

		if ( this.closed || intPoint > 0 ) {

			p0 = points[ ( intPoint - 1 ) % l ];

		} else {

			// extrapolate first point
			tmp.subVectors( points[ 0 ], points[ 1 ] ).add( points[ 0 ] );
			p0 = tmp;

		}

		const p1 = points[ intPoint % l ];
		const p2 = points[ ( intPoint + 1 ) % l ];

		if ( this.closed || intPoint + 2 < l ) {

			p3 = points[ ( intPoint + 2 ) % l ];

		} else {

			// extrapolate last point
			tmp.subVectors( points[ l - 1 ], points[ l - 2 ] ).add( points[ l - 1 ] );
			p3 = tmp;

		}

		if ( this.curveType === 'centripetal' || this.curveType === 'chordal' ) {

			// init Centripetal / Chordal Catmull-Rom
			const pow = this.curveType === 'chordal' ? 0.5 : 0.25;
			let dt0 = Math.pow( p0.distanceToSquared( p1 ), pow );
			let dt1 = Math.pow( p1.distanceToSquared( p2 ), pow );
			let dt2 = Math.pow( p2.distanceToSquared( p3 ), pow );

			// safety check for repeated points
			if ( dt1 < 1e-4 ) dt1 = 1.0;
			if ( dt0 < 1e-4 ) dt0 = dt1;
			if ( dt2 < 1e-4 ) dt2 = dt1;

			px.initNonuniformCatmullRom( p0.x, p1.x, p2.x, p3.x, dt0, dt1, dt2 );
			py.initNonuniformCatmullRom( p0.y, p1.y, p2.y, p3.y, dt0, dt1, dt2 );
			pz.initNonuniformCatmullRom( p0.z, p1.z, p2.z, p3.z, dt0, dt1, dt2 );

		} else if ( this.curveType === 'catmullrom' ) {

			px.initCatmullRom( p0.x, p1.x, p2.x, p3.x, this.tension );
			py.initCatmullRom( p0.y, p1.y, p2.y, p3.y, this.tension );
			pz.initCatmullRom( p0.z, p1.z, p2.z, p3.z, this.tension );

		}

		point.set(
			px.calc( weight ),
			py.calc( weight ),
			pz.calc( weight )
		);

		return point;

	}

	copy( source ) {

		super.copy( source );

		this.points = [];

		for ( let i = 0, l = source.points.length; i < l; i ++ ) {

			const point = source.points[ i ];

			this.points.push( point.clone() );

		}

		this.closed = source.closed;
		this.curveType = source.curveType;
		this.tension = source.tension;

		return this;

	}

	toJSON() {

		const data = super.toJSON();

		data.points = [];

		for ( let i = 0, l = this.points.length; i < l; i ++ ) {

			const point = this.points[ i ];
			data.points.push( point.toArray() );

		}

		data.closed = this.closed;
		data.curveType = this.curveType;
		data.tension = this.tension;

		return data;

	}

	fromJSON( json ) {

		super.fromJSON( json );

		this.points = [];

		for ( let i = 0, l = json.points.length; i < l; i ++ ) {

			const point = json.points[ i ];
			this.points.push( new Vector3().fromArray( point ) );

		}

		this.closed = json.closed;
		this.curveType = json.curveType;
		this.tension = json.tension;

		return this;

	}

}

CatmullRomCurve3.prototype.isCatmullRomCurve3 = true;

/**
 * Bezier Curves formulas obtained from
 * https://en.wikipedia.org/wiki/B%C3%A9zier_curve
 */

function CatmullRom( t, p0, p1, p2, p3 ) {

	const v0 = ( p2 - p0 ) * 0.5;
	const v1 = ( p3 - p1 ) * 0.5;
	const t2 = t * t;
	const t3 = t * t2;
	return ( 2 * p1 - 2 * p2 + v0 + v1 ) * t3 + ( - 3 * p1 + 3 * p2 - 2 * v0 - v1 ) * t2 + v0 * t + p1;

}

//

function QuadraticBezierP0( t, p ) {

	const k = 1 - t;
	return k * k * p;

}

function QuadraticBezierP1( t, p ) {

	return 2 * ( 1 - t ) * t * p;

}

function QuadraticBezierP2( t, p ) {

	return t * t * p;

}

function QuadraticBezier( t, p0, p1, p2 ) {

	return QuadraticBezierP0( t, p0 ) + QuadraticBezierP1( t, p1 ) +
		QuadraticBezierP2( t, p2 );

}

//

function CubicBezierP0( t, p ) {

	const k = 1 - t;
	return k * k * k * p;

}

function CubicBezierP1( t, p ) {

	const k = 1 - t;
	return 3 * k * k * t * p;

}

function CubicBezierP2( t, p ) {

	return 3 * ( 1 - t ) * t * t * p;

}

function CubicBezierP3( t, p ) {

	return t * t * t * p;

}

function CubicBezier( t, p0, p1, p2, p3 ) {

	return CubicBezierP0( t, p0 ) + CubicBezierP1( t, p1 ) + CubicBezierP2( t, p2 ) +
		CubicBezierP3( t, p3 );

}

class CubicBezierCurve extends Curve {

	constructor( v0 = new Vector2(), v1 = new Vector2(), v2 = new Vector2(), v3 = new Vector2() ) {

		super();

		this.type = 'CubicBezierCurve';

		this.v0 = v0;
		this.v1 = v1;
		this.v2 = v2;
		this.v3 = v3;

	}

	getPoint( t, optionalTarget = new Vector2() ) {

		const point = optionalTarget;

		const v0 = this.v0, v1 = this.v1, v2 = this.v2, v3 = this.v3;

		point.set(
			CubicBezier( t, v0.x, v1.x, v2.x, v3.x ),
			CubicBezier( t, v0.y, v1.y, v2.y, v3.y )
		);

		return point;

	}

	copy( source ) {

		super.copy( source );

		this.v0.copy( source.v0 );
		this.v1.copy( source.v1 );
		this.v2.copy( source.v2 );
		this.v3.copy( source.v3 );

		return this;

	}

	toJSON() {

		const data = super.toJSON();

		data.v0 = this.v0.toArray();
		data.v1 = this.v1.toArray();
		data.v2 = this.v2.toArray();
		data.v3 = this.v3.toArray();

		return data;

	}

	fromJSON( json ) {

		super.fromJSON( json );

		this.v0.fromArray( json.v0 );
		this.v1.fromArray( json.v1 );
		this.v2.fromArray( json.v2 );
		this.v3.fromArray( json.v3 );

		return this;

	}

}

CubicBezierCurve.prototype.isCubicBezierCurve = true;

class CubicBezierCurve3 extends Curve {

	constructor( v0 = new Vector3(), v1 = new Vector3(), v2 = new Vector3(), v3 = new Vector3() ) {

		super();

		this.type = 'CubicBezierCurve3';

		this.v0 = v0;
		this.v1 = v1;
		this.v2 = v2;
		this.v3 = v3;

	}

	getPoint( t, optionalTarget = new Vector3() ) {

		const point = optionalTarget;

		const v0 = this.v0, v1 = this.v1, v2 = this.v2, v3 = this.v3;

		point.set(
			CubicBezier( t, v0.x, v1.x, v2.x, v3.x ),
			CubicBezier( t, v0.y, v1.y, v2.y, v3.y ),
			CubicBezier( t, v0.z, v1.z, v2.z, v3.z )
		);

		return point;

	}

	copy( source ) {

		super.copy( source );

		this.v0.copy( source.v0 );
		this.v1.copy( source.v1 );
		this.v2.copy( source.v2 );
		this.v3.copy( source.v3 );

		return this;

	}

	toJSON() {

		const data = super.toJSON();

		data.v0 = this.v0.toArray();
		data.v1 = this.v1.toArray();
		data.v2 = this.v2.toArray();
		data.v3 = this.v3.toArray();

		return data;

	}

	fromJSON( json ) {

		super.fromJSON( json );

		this.v0.fromArray( json.v0 );
		this.v1.fromArray( json.v1 );
		this.v2.fromArray( json.v2 );
		this.v3.fromArray( json.v3 );

		return this;

	}

}

CubicBezierCurve3.prototype.isCubicBezierCurve3 = true;

class LineCurve extends Curve {

	constructor( v1 = new Vector2(), v2 = new Vector2() ) {

		super();

		this.type = 'LineCurve';

		this.v1 = v1;
		this.v2 = v2;

	}

	getPoint( t, optionalTarget = new Vector2() ) {

		const point = optionalTarget;

		if ( t === 1 ) {

			point.copy( this.v2 );

		} else {

			point.copy( this.v2 ).sub( this.v1 );
			point.multiplyScalar( t ).add( this.v1 );

		}

		return point;

	}

	// Line curve is linear, so we can overwrite default getPointAt
	getPointAt( u, optionalTarget ) {

		return this.getPoint( u, optionalTarget );

	}

	getTangent( t, optionalTarget ) {

		const tangent = optionalTarget || new Vector2();

		tangent.copy( this.v2 ).sub( this.v1 ).normalize();

		return tangent;

	}

	copy( source ) {

		super.copy( source );

		this.v1.copy( source.v1 );
		this.v2.copy( source.v2 );

		return this;

	}

	toJSON() {

		const data = super.toJSON();

		data.v1 = this.v1.toArray();
		data.v2 = this.v2.toArray();

		return data;

	}

	fromJSON( json ) {

		super.fromJSON( json );

		this.v1.fromArray( json.v1 );
		this.v2.fromArray( json.v2 );

		return this;

	}

}

LineCurve.prototype.isLineCurve = true;

class LineCurve3 extends Curve {

	constructor( v1 = new Vector3(), v2 = new Vector3() ) {

		super();

		this.type = 'LineCurve3';
		this.isLineCurve3 = true;

		this.v1 = v1;
		this.v2 = v2;

	}
	getPoint( t, optionalTarget = new Vector3() ) {

		const point = optionalTarget;

		if ( t === 1 ) {

			point.copy( this.v2 );

		} else {

			point.copy( this.v2 ).sub( this.v1 );
			point.multiplyScalar( t ).add( this.v1 );

		}

		return point;

	}
	// Line curve is linear, so we can overwrite default getPointAt
	getPointAt( u, optionalTarget ) {

		return this.getPoint( u, optionalTarget );

	}
	copy( source ) {

		super.copy( source );

		this.v1.copy( source.v1 );
		this.v2.copy( source.v2 );

		return this;

	}
	toJSON() {

		const data = super.toJSON();

		data.v1 = this.v1.toArray();
		data.v2 = this.v2.toArray();

		return data;

	}
	fromJSON( json ) {

		super.fromJSON( json );

		this.v1.fromArray( json.v1 );
		this.v2.fromArray( json.v2 );

		return this;

	}

}

class QuadraticBezierCurve extends Curve {

	constructor( v0 = new Vector2(), v1 = new Vector2(), v2 = new Vector2() ) {

		super();

		this.type = 'QuadraticBezierCurve';

		this.v0 = v0;
		this.v1 = v1;
		this.v2 = v2;

	}

	getPoint( t, optionalTarget = new Vector2() ) {

		const point = optionalTarget;

		const v0 = this.v0, v1 = this.v1, v2 = this.v2;

		point.set(
			QuadraticBezier( t, v0.x, v1.x, v2.x ),
			QuadraticBezier( t, v0.y, v1.y, v2.y )
		);

		return point;

	}

	copy( source ) {

		super.copy( source );

		this.v0.copy( source.v0 );
		this.v1.copy( source.v1 );
		this.v2.copy( source.v2 );

		return this;

	}

	toJSON() {

		const data = super.toJSON();

		data.v0 = this.v0.toArray();
		data.v1 = this.v1.toArray();
		data.v2 = this.v2.toArray();

		return data;

	}

	fromJSON( json ) {

		super.fromJSON( json );

		this.v0.fromArray( json.v0 );
		this.v1.fromArray( json.v1 );
		this.v2.fromArray( json.v2 );

		return this;

	}

}

QuadraticBezierCurve.prototype.isQuadraticBezierCurve = true;

class QuadraticBezierCurve3 extends Curve {

	constructor( v0 = new Vector3(), v1 = new Vector3(), v2 = new Vector3() ) {

		super();

		this.type = 'QuadraticBezierCurve3';

		this.v0 = v0;
		this.v1 = v1;
		this.v2 = v2;

	}

	getPoint( t, optionalTarget = new Vector3() ) {

		const point = optionalTarget;

		const v0 = this.v0, v1 = this.v1, v2 = this.v2;

		point.set(
			QuadraticBezier( t, v0.x, v1.x, v2.x ),
			QuadraticBezier( t, v0.y, v1.y, v2.y ),
			QuadraticBezier( t, v0.z, v1.z, v2.z )
		);

		return point;

	}

	copy( source ) {

		super.copy( source );

		this.v0.copy( source.v0 );
		this.v1.copy( source.v1 );
		this.v2.copy( source.v2 );

		return this;

	}

	toJSON() {

		const data = super.toJSON();

		data.v0 = this.v0.toArray();
		data.v1 = this.v1.toArray();
		data.v2 = this.v2.toArray();

		return data;

	}

	fromJSON( json ) {

		super.fromJSON( json );

		this.v0.fromArray( json.v0 );
		this.v1.fromArray( json.v1 );
		this.v2.fromArray( json.v2 );

		return this;

	}

}

QuadraticBezierCurve3.prototype.isQuadraticBezierCurve3 = true;

class SplineCurve extends Curve {

	constructor( points = [] ) {

		super();

		this.type = 'SplineCurve';

		this.points = points;

	}

	getPoint( t, optionalTarget = new Vector2() ) {

		const point = optionalTarget;

		const points = this.points;
		const p = ( points.length - 1 ) * t;

		const intPoint = Math.floor( p );
		const weight = p - intPoint;

		const p0 = points[ intPoint === 0 ? intPoint : intPoint - 1 ];
		const p1 = points[ intPoint ];
		const p2 = points[ intPoint > points.length - 2 ? points.length - 1 : intPoint + 1 ];
		const p3 = points[ intPoint > points.length - 3 ? points.length - 1 : intPoint + 2 ];

		point.set(
			CatmullRom( weight, p0.x, p1.x, p2.x, p3.x ),
			CatmullRom( weight, p0.y, p1.y, p2.y, p3.y )
		);

		return point;

	}

	copy( source ) {

		super.copy( source );

		this.points = [];

		for ( let i = 0, l = source.points.length; i < l; i ++ ) {

			const point = source.points[ i ];

			this.points.push( point.clone() );

		}

		return this;

	}

	toJSON() {

		const data = super.toJSON();

		data.points = [];

		for ( let i = 0, l = this.points.length; i < l; i ++ ) {

			const point = this.points[ i ];
			data.points.push( point.toArray() );

		}

		return data;

	}

	fromJSON( json ) {

		super.fromJSON( json );

		this.points = [];

		for ( let i = 0, l = json.points.length; i < l; i ++ ) {

			const point = json.points[ i ];
			this.points.push( new Vector2().fromArray( point ) );

		}

		return this;

	}

}

SplineCurve.prototype.isSplineCurve = true;

var Curves = /*#__PURE__*/Object.freeze({
	__proto__: null,
	ArcCurve: ArcCurve,
	CatmullRomCurve3: CatmullRomCurve3,
	CubicBezierCurve: CubicBezierCurve,
	CubicBezierCurve3: CubicBezierCurve3,
	EllipseCurve: EllipseCurve,
	LineCurve: LineCurve,
	LineCurve3: LineCurve3,
	QuadraticBezierCurve: QuadraticBezierCurve,
	QuadraticBezierCurve3: QuadraticBezierCurve3,
	SplineCurve: SplineCurve
});

/**************************************************************
 *	Curved Path - a curve path is simply a array of connected
 *  curves, but retains the api of a curve
 **************************************************************/

class CurvePath extends Curve {

	constructor() {

		super();

		this.type = 'CurvePath';

		this.curves = [];
		this.autoClose = false; // Automatically closes the path

	}

	add( curve ) {

		this.curves.push( curve );

	}

	closePath() {

		// Add a line curve if start and end of lines are not connected
		const startPoint = this.curves[ 0 ].getPoint( 0 );
		const endPoint = this.curves[ this.curves.length - 1 ].getPoint( 1 );

		if ( ! startPoint.equals( endPoint ) ) {

			this.curves.push( new LineCurve( endPoint, startPoint ) );

		}

	}

	// To get accurate point with reference to
	// entire path distance at time t,
	// following has to be done:

	// 1. Length of each sub path have to be known
	// 2. Locate and identify type of curve
	// 3. Get t for the curve
	// 4. Return curve.getPointAt(t')

	getPoint( t, optionalTarget ) {

		const d = t * this.getLength();
		const curveLengths = this.getCurveLengths();
		let i = 0;

		// To think about boundaries points.

		while ( i < curveLengths.length ) {

			if ( curveLengths[ i ] >= d ) {

				const diff = curveLengths[ i ] - d;
				const curve = this.curves[ i ];

				const segmentLength = curve.getLength();
				const u = segmentLength === 0 ? 0 : 1 - diff / segmentLength;

				return curve.getPointAt( u, optionalTarget );

			}

			i ++;

		}

		return null;

		// loop where sum != 0, sum > d , sum+1 <d

	}

	// We cannot use the default THREE.Curve getPoint() with getLength() because in
	// THREE.Curve, getLength() depends on getPoint() but in THREE.CurvePath
	// getPoint() depends on getLength

	getLength() {

		const lens = this.getCurveLengths();
		return lens[ lens.length - 1 ];

	}

	// cacheLengths must be recalculated.
	updateArcLengths() {

		this.needsUpdate = true;
		this.cacheLengths = null;
		this.getCurveLengths();

	}

	// Compute lengths and cache them
	// We cannot overwrite getLengths() because UtoT mapping uses it.

	getCurveLengths() {

		// We use cache values if curves and cache array are same length

		if ( this.cacheLengths && this.cacheLengths.length === this.curves.length ) {

			return this.cacheLengths;

		}

		// Get length of sub-curve
		// Push sums into cached array

		const lengths = [];
		let sums = 0;

		for ( let i = 0, l = this.curves.length; i < l; i ++ ) {

			sums += this.curves[ i ].getLength();
			lengths.push( sums );

		}

		this.cacheLengths = lengths;

		return lengths;

	}

	getSpacedPoints( divisions = 40 ) {

		const points = [];

		for ( let i = 0; i <= divisions; i ++ ) {

			points.push( this.getPoint( i / divisions ) );

		}

		if ( this.autoClose ) {

			points.push( points[ 0 ] );

		}

		return points;

	}

	getPoints( divisions = 12 ) {

		const points = [];
		let last;

		for ( let i = 0, curves = this.curves; i < curves.length; i ++ ) {

			const curve = curves[ i ];
			const resolution = curve.isEllipseCurve ? divisions * 2
				: ( curve.isLineCurve || curve.isLineCurve3 ) ? 1
					: curve.isSplineCurve ? divisions * curve.points.length
						: divisions;

			const pts = curve.getPoints( resolution );

			for ( let j = 0; j < pts.length; j ++ ) {

				const point = pts[ j ];

				if ( last && last.equals( point ) ) continue; // ensures no consecutive points are duplicates

				points.push( point );
				last = point;

			}

		}

		if ( this.autoClose && points.length > 1 && ! points[ points.length - 1 ].equals( points[ 0 ] ) ) {

			points.push( points[ 0 ] );

		}

		return points;

	}

	copy( source ) {

		super.copy( source );

		this.curves = [];

		for ( let i = 0, l = source.curves.length; i < l; i ++ ) {

			const curve = source.curves[ i ];

			this.curves.push( curve.clone() );

		}

		this.autoClose = source.autoClose;

		return this;

	}

	toJSON() {

		const data = super.toJSON();

		data.autoClose = this.autoClose;
		data.curves = [];

		for ( let i = 0, l = this.curves.length; i < l; i ++ ) {

			const curve = this.curves[ i ];
			data.curves.push( curve.toJSON() );

		}

		return data;

	}

	fromJSON( json ) {

		super.fromJSON( json );

		this.autoClose = json.autoClose;
		this.curves = [];

		for ( let i = 0, l = json.curves.length; i < l; i ++ ) {

			const curve = json.curves[ i ];
			this.curves.push( new Curves[ curve.type ]().fromJSON( curve ) );

		}

		return this;

	}

}

class Path extends CurvePath {

	constructor( points ) {

		super();
		this.type = 'Path';

		this.currentPoint = new Vector2();

		if ( points ) {

			this.setFromPoints( points );

		}

	}

	setFromPoints( points ) {

		this.moveTo( points[ 0 ].x, points[ 0 ].y );

		for ( let i = 1, l = points.length; i < l; i ++ ) {

			this.lineTo( points[ i ].x, points[ i ].y );

		}

		return this;

	}

	moveTo( x, y ) {

		this.currentPoint.set( x, y ); // TODO consider referencing vectors instead of copying?

		return this;

	}

	lineTo( x, y ) {

		const curve = new LineCurve( this.currentPoint.clone(), new Vector2( x, y ) );
		this.curves.push( curve );

		this.currentPoint.set( x, y );

		return this;

	}

	quadraticCurveTo( aCPx, aCPy, aX, aY ) {

		const curve = new QuadraticBezierCurve(
			this.currentPoint.clone(),
			new Vector2( aCPx, aCPy ),
			new Vector2( aX, aY )
		);

		this.curves.push( curve );

		this.currentPoint.set( aX, aY );

		return this;

	}

	bezierCurveTo( aCP1x, aCP1y, aCP2x, aCP2y, aX, aY ) {

		const curve = new CubicBezierCurve(
			this.currentPoint.clone(),
			new Vector2( aCP1x, aCP1y ),
			new Vector2( aCP2x, aCP2y ),
			new Vector2( aX, aY )
		);

		this.curves.push( curve );

		this.currentPoint.set( aX, aY );

		return this;

	}

	splineThru( pts /*Array of Vector*/ ) {

		const npts = [ this.currentPoint.clone() ].concat( pts );

		const curve = new SplineCurve( npts );
		this.curves.push( curve );

		this.currentPoint.copy( pts[ pts.length - 1 ] );

		return this;

	}

	arc( aX, aY, aRadius, aStartAngle, aEndAngle, aClockwise ) {

		const x0 = this.currentPoint.x;
		const y0 = this.currentPoint.y;

		this.absarc( aX + x0, aY + y0, aRadius,
			aStartAngle, aEndAngle, aClockwise );

		return this;

	}

	absarc( aX, aY, aRadius, aStartAngle, aEndAngle, aClockwise ) {

		this.absellipse( aX, aY, aRadius, aRadius, aStartAngle, aEndAngle, aClockwise );

		return this;

	}

	ellipse( aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation ) {

		const x0 = this.currentPoint.x;
		const y0 = this.currentPoint.y;

		this.absellipse( aX + x0, aY + y0, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation );

		return this;

	}

	absellipse( aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation ) {

		const curve = new EllipseCurve( aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation );

		if ( this.curves.length > 0 ) {

			// if a previous curve is present, attempt to join
			const firstPoint = curve.getPoint( 0 );

			if ( ! firstPoint.equals( this.currentPoint ) ) {

				this.lineTo( firstPoint.x, firstPoint.y );

			}

		}

		this.curves.push( curve );

		const lastPoint = curve.getPoint( 1 );
		this.currentPoint.copy( lastPoint );

		return this;

	}

	copy( source ) {

		super.copy( source );

		this.currentPoint.copy( source.currentPoint );

		return this;

	}

	toJSON() {

		const data = super.toJSON();

		data.currentPoint = this.currentPoint.toArray();

		return data;

	}

	fromJSON( json ) {

		super.fromJSON( json );

		this.currentPoint.fromArray( json.currentPoint );

		return this;

	}

}

class Shape extends Path {

	constructor( points ) {

		super( points );

		this.uuid = generateUUID();

		this.type = 'Shape';

		this.holes = [];

	}

	getPointsHoles( divisions ) {

		const holesPts = [];

		for ( let i = 0, l = this.holes.length; i < l; i ++ ) {

			holesPts[ i ] = this.holes[ i ].getPoints( divisions );

		}

		return holesPts;

	}

	// get points of shape and holes (keypoints based on segments parameter)

	extractPoints( divisions ) {

		return {

			shape: this.getPoints( divisions ),
			holes: this.getPointsHoles( divisions )

		};

	}

	copy( source ) {

		super.copy( source );

		this.holes = [];

		for ( let i = 0, l = source.holes.length; i < l; i ++ ) {

			const hole = source.holes[ i ];

			this.holes.push( hole.clone() );

		}

		return this;

	}

	toJSON() {

		const data = super.toJSON();

		data.uuid = this.uuid;
		data.holes = [];

		for ( let i = 0, l = this.holes.length; i < l; i ++ ) {

			const hole = this.holes[ i ];
			data.holes.push( hole.toJSON() );

		}

		return data;

	}

	fromJSON( json ) {

		super.fromJSON( json );

		this.uuid = json.uuid;
		this.holes = [];

		for ( let i = 0, l = json.holes.length; i < l; i ++ ) {

			const hole = json.holes[ i ];
			this.holes.push( new Path().fromJSON( hole ) );

		}

		return this;

	}

}

/**
 * Port from https://github.com/mapbox/earcut (v2.2.2)
 */

const Earcut = {

	triangulate: function ( data, holeIndices, dim = 2 ) {

		const hasHoles = holeIndices && holeIndices.length;
		const outerLen = hasHoles ? holeIndices[ 0 ] * dim : data.length;
		let outerNode = linkedList( data, 0, outerLen, dim, true );
		const triangles = [];

		if ( ! outerNode || outerNode.next === outerNode.prev ) return triangles;

		let minX, minY, maxX, maxY, x, y, invSize;

		if ( hasHoles ) outerNode = eliminateHoles( data, holeIndices, outerNode, dim );

		// if the shape is not too simple, we'll use z-order curve hash later; calculate polygon bbox
		if ( data.length > 80 * dim ) {

			minX = maxX = data[ 0 ];
			minY = maxY = data[ 1 ];

			for ( let i = dim; i < outerLen; i += dim ) {

				x = data[ i ];
				y = data[ i + 1 ];
				if ( x < minX ) minX = x;
				if ( y < minY ) minY = y;
				if ( x > maxX ) maxX = x;
				if ( y > maxY ) maxY = y;

			}

			// minX, minY and invSize are later used to transform coords into integers for z-order calculation
			invSize = Math.max( maxX - minX, maxY - minY );
			invSize = invSize !== 0 ? 1 / invSize : 0;

		}

		earcutLinked( outerNode, triangles, dim, minX, minY, invSize );

		return triangles;

	}

};

// create a circular doubly linked list from polygon points in the specified winding order
function linkedList( data, start, end, dim, clockwise ) {

	let i, last;

	if ( clockwise === ( signedArea( data, start, end, dim ) > 0 ) ) {

		for ( i = start; i < end; i += dim ) last = insertNode( i, data[ i ], data[ i + 1 ], last );

	} else {

		for ( i = end - dim; i >= start; i -= dim ) last = insertNode( i, data[ i ], data[ i + 1 ], last );

	}

	if ( last && equals( last, last.next ) ) {

		removeNode( last );
		last = last.next;

	}

	return last;

}

// eliminate colinear or duplicate points
function filterPoints( start, end ) {

	if ( ! start ) return start;
	if ( ! end ) end = start;

	let p = start,
		again;
	do {

		again = false;

		if ( ! p.steiner && ( equals( p, p.next ) || area( p.prev, p, p.next ) === 0 ) ) {

			removeNode( p );
			p = end = p.prev;
			if ( p === p.next ) break;
			again = true;

		} else {

			p = p.next;

		}

	} while ( again || p !== end );

	return end;

}

// main ear slicing loop which triangulates a polygon (given as a linked list)
function earcutLinked( ear, triangles, dim, minX, minY, invSize, pass ) {

	if ( ! ear ) return;

	// interlink polygon nodes in z-order
	if ( ! pass && invSize ) indexCurve( ear, minX, minY, invSize );

	let stop = ear,
		prev, next;

	// iterate through ears, slicing them one by one
	while ( ear.prev !== ear.next ) {

		prev = ear.prev;
		next = ear.next;

		if ( invSize ? isEarHashed( ear, minX, minY, invSize ) : isEar( ear ) ) {

			// cut off the triangle
			triangles.push( prev.i / dim );
			triangles.push( ear.i / dim );
			triangles.push( next.i / dim );

			removeNode( ear );

			// skipping the next vertex leads to less sliver triangles
			ear = next.next;
			stop = next.next;

			continue;

		}

		ear = next;

		// if we looped through the whole remaining polygon and can't find any more ears
		if ( ear === stop ) {

			// try filtering points and slicing again
			if ( ! pass ) {

				earcutLinked( filterPoints( ear ), triangles, dim, minX, minY, invSize, 1 );

				// if this didn't work, try curing all small self-intersections locally

			} else if ( pass === 1 ) {

				ear = cureLocalIntersections( filterPoints( ear ), triangles, dim );
				earcutLinked( ear, triangles, dim, minX, minY, invSize, 2 );

				// as a last resort, try splitting the remaining polygon into two

			} else if ( pass === 2 ) {

				splitEarcut( ear, triangles, dim, minX, minY, invSize );

			}

			break;

		}

	}

}

// check whether a polygon node forms a valid ear with adjacent nodes
function isEar( ear ) {

	const a = ear.prev,
		b = ear,
		c = ear.next;

	if ( area( a, b, c ) >= 0 ) return false; // reflex, can't be an ear

	// now make sure we don't have other points inside the potential ear
	let p = ear.next.next;

	while ( p !== ear.prev ) {

		if ( pointInTriangle( a.x, a.y, b.x, b.y, c.x, c.y, p.x, p.y ) &&
			area( p.prev, p, p.next ) >= 0 ) return false;
		p = p.next;

	}

	return true;

}

function isEarHashed( ear, minX, minY, invSize ) {

	const a = ear.prev,
		b = ear,
		c = ear.next;

	if ( area( a, b, c ) >= 0 ) return false; // reflex, can't be an ear

	// triangle bbox; min & max are calculated like this for speed
	const minTX = a.x < b.x ? ( a.x < c.x ? a.x : c.x ) : ( b.x < c.x ? b.x : c.x ),
		minTY = a.y < b.y ? ( a.y < c.y ? a.y : c.y ) : ( b.y < c.y ? b.y : c.y ),
		maxTX = a.x > b.x ? ( a.x > c.x ? a.x : c.x ) : ( b.x > c.x ? b.x : c.x ),
		maxTY = a.y > b.y ? ( a.y > c.y ? a.y : c.y ) : ( b.y > c.y ? b.y : c.y );

	// z-order range for the current triangle bbox;
	const minZ = zOrder( minTX, minTY, minX, minY, invSize ),
		maxZ = zOrder( maxTX, maxTY, minX, minY, invSize );

	let p = ear.prevZ,
		n = ear.nextZ;

	// look for points inside the triangle in both directions
	while ( p && p.z >= minZ && n && n.z <= maxZ ) {

		if ( p !== ear.prev && p !== ear.next &&
			pointInTriangle( a.x, a.y, b.x, b.y, c.x, c.y, p.x, p.y ) &&
			area( p.prev, p, p.next ) >= 0 ) return false;
		p = p.prevZ;

		if ( n !== ear.prev && n !== ear.next &&
			pointInTriangle( a.x, a.y, b.x, b.y, c.x, c.y, n.x, n.y ) &&
			area( n.prev, n, n.next ) >= 0 ) return false;
		n = n.nextZ;

	}

	// look for remaining points in decreasing z-order
	while ( p && p.z >= minZ ) {

		if ( p !== ear.prev && p !== ear.next &&
			pointInTriangle( a.x, a.y, b.x, b.y, c.x, c.y, p.x, p.y ) &&
			area( p.prev, p, p.next ) >= 0 ) return false;
		p = p.prevZ;

	}

	// look for remaining points in increasing z-order
	while ( n && n.z <= maxZ ) {

		if ( n !== ear.prev && n !== ear.next &&
			pointInTriangle( a.x, a.y, b.x, b.y, c.x, c.y, n.x, n.y ) &&
			area( n.prev, n, n.next ) >= 0 ) return false;
		n = n.nextZ;

	}

	return true;

}

// go through all polygon nodes and cure small local self-intersections
function cureLocalIntersections( start, triangles, dim ) {

	let p = start;
	do {

		const a = p.prev,
			b = p.next.next;

		if ( ! equals( a, b ) && intersects( a, p, p.next, b ) && locallyInside( a, b ) && locallyInside( b, a ) ) {

			triangles.push( a.i / dim );
			triangles.push( p.i / dim );
			triangles.push( b.i / dim );

			// remove two nodes involved
			removeNode( p );
			removeNode( p.next );

			p = start = b;

		}

		p = p.next;

	} while ( p !== start );

	return filterPoints( p );

}

// try splitting polygon into two and triangulate them independently
function splitEarcut( start, triangles, dim, minX, minY, invSize ) {

	// look for a valid diagonal that divides the polygon into two
	let a = start;
	do {

		let b = a.next.next;
		while ( b !== a.prev ) {

			if ( a.i !== b.i && isValidDiagonal( a, b ) ) {

				// split the polygon in two by the diagonal
				let c = splitPolygon( a, b );

				// filter colinear points around the cuts
				a = filterPoints( a, a.next );
				c = filterPoints( c, c.next );

				// run earcut on each half
				earcutLinked( a, triangles, dim, minX, minY, invSize );
				earcutLinked( c, triangles, dim, minX, minY, invSize );
				return;

			}

			b = b.next;

		}

		a = a.next;

	} while ( a !== start );

}

// link every hole into the outer loop, producing a single-ring polygon without holes
function eliminateHoles( data, holeIndices, outerNode, dim ) {

	const queue = [];
	let i, len, start, end, list;

	for ( i = 0, len = holeIndices.length; i < len; i ++ ) {

		start = holeIndices[ i ] * dim;
		end = i < len - 1 ? holeIndices[ i + 1 ] * dim : data.length;
		list = linkedList( data, start, end, dim, false );
		if ( list === list.next ) list.steiner = true;
		queue.push( getLeftmost( list ) );

	}

	queue.sort( compareX );

	// process holes from left to right
	for ( i = 0; i < queue.length; i ++ ) {

		eliminateHole( queue[ i ], outerNode );
		outerNode = filterPoints( outerNode, outerNode.next );

	}

	return outerNode;

}

function compareX( a, b ) {

	return a.x - b.x;

}

// find a bridge between vertices that connects hole with an outer ring and and link it
function eliminateHole( hole, outerNode ) {

	outerNode = findHoleBridge( hole, outerNode );
	if ( outerNode ) {

		const b = splitPolygon( outerNode, hole );

		// filter collinear points around the cuts
		filterPoints( outerNode, outerNode.next );
		filterPoints( b, b.next );

	}

}

// David Eberly's algorithm for finding a bridge between hole and outer polygon
function findHoleBridge( hole, outerNode ) {

	let p = outerNode;
	const hx = hole.x;
	const hy = hole.y;
	let qx = - Infinity, m;

	// find a segment intersected by a ray from the hole's leftmost point to the left;
	// segment's endpoint with lesser x will be potential connection point
	do {

		if ( hy <= p.y && hy >= p.next.y && p.next.y !== p.y ) {

			const x = p.x + ( hy - p.y ) * ( p.next.x - p.x ) / ( p.next.y - p.y );
			if ( x <= hx && x > qx ) {

				qx = x;
				if ( x === hx ) {

					if ( hy === p.y ) return p;
					if ( hy === p.next.y ) return p.next;

				}

				m = p.x < p.next.x ? p : p.next;

			}

		}

		p = p.next;

	} while ( p !== outerNode );

	if ( ! m ) return null;

	if ( hx === qx ) return m; // hole touches outer segment; pick leftmost endpoint

	// look for points inside the triangle of hole point, segment intersection and endpoint;
	// if there are no points found, we have a valid connection;
	// otherwise choose the point of the minimum angle with the ray as connection point

	const stop = m,
		mx = m.x,
		my = m.y;
	let tanMin = Infinity, tan;

	p = m;

	do {

		if ( hx >= p.x && p.x >= mx && hx !== p.x &&
				pointInTriangle( hy < my ? hx : qx, hy, mx, my, hy < my ? qx : hx, hy, p.x, p.y ) ) {

			tan = Math.abs( hy - p.y ) / ( hx - p.x ); // tangential

			if ( locallyInside( p, hole ) && ( tan < tanMin || ( tan === tanMin && ( p.x > m.x || ( p.x === m.x && sectorContainsSector( m, p ) ) ) ) ) ) {

				m = p;
				tanMin = tan;

			}

		}

		p = p.next;

	} while ( p !== stop );

	return m;

}

// whether sector in vertex m contains sector in vertex p in the same coordinates
function sectorContainsSector( m, p ) {

	return area( m.prev, m, p.prev ) < 0 && area( p.next, m, m.next ) < 0;

}

// interlink polygon nodes in z-order
function indexCurve( start, minX, minY, invSize ) {

	let p = start;
	do {

		if ( p.z === null ) p.z = zOrder( p.x, p.y, minX, minY, invSize );
		p.prevZ = p.prev;
		p.nextZ = p.next;
		p = p.next;

	} while ( p !== start );

	p.prevZ.nextZ = null;
	p.prevZ = null;

	sortLinked( p );

}

// Simon Tatham's linked list merge sort algorithm
// http://www.chiark.greenend.org.uk/~sgtatham/algorithms/listsort.html
function sortLinked( list ) {

	let i, p, q, e, tail, numMerges, pSize, qSize,
		inSize = 1;

	do {

		p = list;
		list = null;
		tail = null;
		numMerges = 0;

		while ( p ) {

			numMerges ++;
			q = p;
			pSize = 0;
			for ( i = 0; i < inSize; i ++ ) {

				pSize ++;
				q = q.nextZ;
				if ( ! q ) break;

			}

			qSize = inSize;

			while ( pSize > 0 || ( qSize > 0 && q ) ) {

				if ( pSize !== 0 && ( qSize === 0 || ! q || p.z <= q.z ) ) {

					e = p;
					p = p.nextZ;
					pSize --;

				} else {

					e = q;
					q = q.nextZ;
					qSize --;

				}

				if ( tail ) tail.nextZ = e;
				else list = e;

				e.prevZ = tail;
				tail = e;

			}

			p = q;

		}

		tail.nextZ = null;
		inSize *= 2;

	} while ( numMerges > 1 );

	return list;

}

// z-order of a point given coords and inverse of the longer side of data bbox
function zOrder( x, y, minX, minY, invSize ) {

	// coords are transformed into non-negative 15-bit integer range
	x = 32767 * ( x - minX ) * invSize;
	y = 32767 * ( y - minY ) * invSize;

	x = ( x | ( x << 8 ) ) & 0x00FF00FF;
	x = ( x | ( x << 4 ) ) & 0x0F0F0F0F;
	x = ( x | ( x << 2 ) ) & 0x33333333;
	x = ( x | ( x << 1 ) ) & 0x55555555;

	y = ( y | ( y << 8 ) ) & 0x00FF00FF;
	y = ( y | ( y << 4 ) ) & 0x0F0F0F0F;
	y = ( y | ( y << 2 ) ) & 0x33333333;
	y = ( y | ( y << 1 ) ) & 0x55555555;

	return x | ( y << 1 );

}

// find the leftmost node of a polygon ring
function getLeftmost( start ) {

	let p = start,
		leftmost = start;
	do {

		if ( p.x < leftmost.x || ( p.x === leftmost.x && p.y < leftmost.y ) ) leftmost = p;
		p = p.next;

	} while ( p !== start );

	return leftmost;

}

// check if a point lies within a convex triangle
function pointInTriangle( ax, ay, bx, by, cx, cy, px, py ) {

	return ( cx - px ) * ( ay - py ) - ( ax - px ) * ( cy - py ) >= 0 &&
			( ax - px ) * ( by - py ) - ( bx - px ) * ( ay - py ) >= 0 &&
			( bx - px ) * ( cy - py ) - ( cx - px ) * ( by - py ) >= 0;

}

// check if a diagonal between two polygon nodes is valid (lies in polygon interior)
function isValidDiagonal( a, b ) {

	return a.next.i !== b.i && a.prev.i !== b.i && ! intersectsPolygon( a, b ) && // dones't intersect other edges
		( locallyInside( a, b ) && locallyInside( b, a ) && middleInside( a, b ) && // locally visible
		( area( a.prev, a, b.prev ) || area( a, b.prev, b ) ) || // does not create opposite-facing sectors
		equals( a, b ) && area( a.prev, a, a.next ) > 0 && area( b.prev, b, b.next ) > 0 ); // special zero-length case

}

// signed area of a triangle
function area( p, q, r ) {

	return ( q.y - p.y ) * ( r.x - q.x ) - ( q.x - p.x ) * ( r.y - q.y );

}

// check if two points are equal
function equals( p1, p2 ) {

	return p1.x === p2.x && p1.y === p2.y;

}

// check if two segments intersect
function intersects( p1, q1, p2, q2 ) {

	const o1 = sign( area( p1, q1, p2 ) );
	const o2 = sign( area( p1, q1, q2 ) );
	const o3 = sign( area( p2, q2, p1 ) );
	const o4 = sign( area( p2, q2, q1 ) );

	if ( o1 !== o2 && o3 !== o4 ) return true; // general case

	if ( o1 === 0 && onSegment( p1, p2, q1 ) ) return true; // p1, q1 and p2 are collinear and p2 lies on p1q1
	if ( o2 === 0 && onSegment( p1, q2, q1 ) ) return true; // p1, q1 and q2 are collinear and q2 lies on p1q1
	if ( o3 === 0 && onSegment( p2, p1, q2 ) ) return true; // p2, q2 and p1 are collinear and p1 lies on p2q2
	if ( o4 === 0 && onSegment( p2, q1, q2 ) ) return true; // p2, q2 and q1 are collinear and q1 lies on p2q2

	return false;

}

// for collinear points p, q, r, check if point q lies on segment pr
function onSegment( p, q, r ) {

	return q.x <= Math.max( p.x, r.x ) && q.x >= Math.min( p.x, r.x ) && q.y <= Math.max( p.y, r.y ) && q.y >= Math.min( p.y, r.y );

}

function sign( num ) {

	return num > 0 ? 1 : num < 0 ? - 1 : 0;

}

// check if a polygon diagonal intersects any polygon segments
function intersectsPolygon( a, b ) {

	let p = a;
	do {

		if ( p.i !== a.i && p.next.i !== a.i && p.i !== b.i && p.next.i !== b.i &&
				intersects( p, p.next, a, b ) ) return true;
		p = p.next;

	} while ( p !== a );

	return false;

}

// check if a polygon diagonal is locally inside the polygon
function locallyInside( a, b ) {

	return area( a.prev, a, a.next ) < 0 ?
		area( a, b, a.next ) >= 0 && area( a, a.prev, b ) >= 0 :
		area( a, b, a.prev ) < 0 || area( a, a.next, b ) < 0;

}

// check if the middle point of a polygon diagonal is inside the polygon
function middleInside( a, b ) {

	let p = a,
		inside = false;
	const px = ( a.x + b.x ) / 2,
		py = ( a.y + b.y ) / 2;
	do {

		if ( ( ( p.y > py ) !== ( p.next.y > py ) ) && p.next.y !== p.y &&
				( px < ( p.next.x - p.x ) * ( py - p.y ) / ( p.next.y - p.y ) + p.x ) )
			inside = ! inside;
		p = p.next;

	} while ( p !== a );

	return inside;

}

// link two polygon vertices with a bridge; if the vertices belong to the same ring, it splits polygon into two;
// if one belongs to the outer ring and another to a hole, it merges it into a single ring
function splitPolygon( a, b ) {

	const a2 = new Node( a.i, a.x, a.y ),
		b2 = new Node( b.i, b.x, b.y ),
		an = a.next,
		bp = b.prev;

	a.next = b;
	b.prev = a;

	a2.next = an;
	an.prev = a2;

	b2.next = a2;
	a2.prev = b2;

	bp.next = b2;
	b2.prev = bp;

	return b2;

}

// create a node and optionally link it with previous one (in a circular doubly linked list)
function insertNode( i, x, y, last ) {

	const p = new Node( i, x, y );

	if ( ! last ) {

		p.prev = p;
		p.next = p;

	} else {

		p.next = last.next;
		p.prev = last;
		last.next.prev = p;
		last.next = p;

	}

	return p;

}

function removeNode( p ) {

	p.next.prev = p.prev;
	p.prev.next = p.next;

	if ( p.prevZ ) p.prevZ.nextZ = p.nextZ;
	if ( p.nextZ ) p.nextZ.prevZ = p.prevZ;

}

function Node( i, x, y ) {

	// vertex index in coordinates array
	this.i = i;

	// vertex coordinates
	this.x = x;
	this.y = y;

	// previous and next vertex nodes in a polygon ring
	this.prev = null;
	this.next = null;

	// z-order curve value
	this.z = null;

	// previous and next nodes in z-order
	this.prevZ = null;
	this.nextZ = null;

	// indicates whether this is a steiner point
	this.steiner = false;

}

function signedArea( data, start, end, dim ) {

	let sum = 0;
	for ( let i = start, j = end - dim; i < end; i += dim ) {

		sum += ( data[ j ] - data[ i ] ) * ( data[ i + 1 ] + data[ j + 1 ] );
		j = i;

	}

	return sum;

}

class ShapeUtils {

	// calculate area of the contour polygon

	static area( contour ) {

		const n = contour.length;
		let a = 0.0;

		for ( let p = n - 1, q = 0; q < n; p = q ++ ) {

			a += contour[ p ].x * contour[ q ].y - contour[ q ].x * contour[ p ].y;

		}

		return a * 0.5;

	}

	static isClockWise( pts ) {

		return ShapeUtils.area( pts ) < 0;

	}

	static triangulateShape( contour, holes ) {

		const vertices = []; // flat array of vertices like [ x0,y0, x1,y1, x2,y2, ... ]
		const holeIndices = []; // array of hole indices
		const faces = []; // final array of vertex indices like [ [ a,b,d ], [ b,c,d ] ]

		removeDupEndPts( contour );
		addContour( vertices, contour );

		//

		let holeIndex = contour.length;

		holes.forEach( removeDupEndPts );

		for ( let i = 0; i < holes.length; i ++ ) {

			holeIndices.push( holeIndex );
			holeIndex += holes[ i ].length;
			addContour( vertices, holes[ i ] );

		}

		//

		const triangles = Earcut.triangulate( vertices, holeIndices );

		//

		for ( let i = 0; i < triangles.length; i += 3 ) {

			faces.push( triangles.slice( i, i + 3 ) );

		}

		return faces;

	}

}

function removeDupEndPts( points ) {

	const l = points.length;

	if ( l > 2 && points[ l - 1 ].equals( points[ 0 ] ) ) {

		points.pop();

	}

}

function addContour( vertices, contour ) {

	for ( let i = 0; i < contour.length; i ++ ) {

		vertices.push( contour[ i ].x );
		vertices.push( contour[ i ].y );

	}

}

/**
 * Creates extruded geometry from a path shape.
 *
 * parameters = {
 *
 *  curveSegments: <int>, // number of points on the curves
 *  steps: <int>, // number of points for z-side extrusions / used for subdividing segments of extrude spline too
 *  depth: <float>, // Depth to extrude the shape
 *
 *  bevelEnabled: <bool>, // turn on bevel
 *  bevelThickness: <float>, // how deep into the original shape bevel goes
 *  bevelSize: <float>, // how far from shape outline (including bevelOffset) is bevel
 *  bevelOffset: <float>, // how far from shape outline does bevel start
 *  bevelSegments: <int>, // number of bevel layers
 *
 *  extrudePath: <THREE.Curve> // curve to extrude shape along
 *
 *  UVGenerator: <Object> // object that provides UV generator functions
 *
 * }
 */

class ExtrudeGeometry extends BufferGeometry {

	constructor( shapes = new Shape( [ new Vector2( 0.5, 0.5 ), new Vector2( - 0.5, 0.5 ), new Vector2( - 0.5, - 0.5 ), new Vector2( 0.5, - 0.5 ) ] ), options = {} ) {

		super();

		this.type = 'ExtrudeGeometry';

		this.parameters = {
			shapes: shapes,
			options: options
		};

		shapes = Array.isArray( shapes ) ? shapes : [ shapes ];

		const scope = this;

		const verticesArray = [];
		const uvArray = [];

		for ( let i = 0, l = shapes.length; i < l; i ++ ) {

			const shape = shapes[ i ];
			addShape( shape );

		}

		// build geometry

		this.setAttribute( 'position', new Float32BufferAttribute( verticesArray, 3 ) );
		this.setAttribute( 'uv', new Float32BufferAttribute( uvArray, 2 ) );

		this.computeVertexNormals();

		// functions

		function addShape( shape ) {

			const placeholder = [];

			// options

			const curveSegments = options.curveSegments !== undefined ? options.curveSegments : 12;
			const steps = options.steps !== undefined ? options.steps : 1;
			let depth = options.depth !== undefined ? options.depth : 1;

			let bevelEnabled = options.bevelEnabled !== undefined ? options.bevelEnabled : true;
			let bevelThickness = options.bevelThickness !== undefined ? options.bevelThickness : 0.2;
			let bevelSize = options.bevelSize !== undefined ? options.bevelSize : bevelThickness - 0.1;
			let bevelOffset = options.bevelOffset !== undefined ? options.bevelOffset : 0;
			let bevelSegments = options.bevelSegments !== undefined ? options.bevelSegments : 3;

			const extrudePath = options.extrudePath;

			const uvgen = options.UVGenerator !== undefined ? options.UVGenerator : WorldUVGenerator;

			// deprecated options

			if ( options.amount !== undefined ) {

				console.warn( 'THREE.ExtrudeBufferGeometry: amount has been renamed to depth.' );
				depth = options.amount;

			}

			//

			let extrudePts, extrudeByPath = false;
			let splineTube, binormal, normal, position2;

			if ( extrudePath ) {

				extrudePts = extrudePath.getSpacedPoints( steps );

				extrudeByPath = true;
				bevelEnabled = false; // bevels not supported for path extrusion

				// SETUP TNB variables

				// TODO1 - have a .isClosed in spline?

				splineTube = extrudePath.computeFrenetFrames( steps, false );

				// console.log(splineTube, 'splineTube', splineTube.normals.length, 'steps', steps, 'extrudePts', extrudePts.length);

				binormal = new Vector3();
				normal = new Vector3();
				position2 = new Vector3();

			}

			// Safeguards if bevels are not enabled

			if ( ! bevelEnabled ) {

				bevelSegments = 0;
				bevelThickness = 0;
				bevelSize = 0;
				bevelOffset = 0;

			}

			// Variables initialization

			const shapePoints = shape.extractPoints( curveSegments );

			let vertices = shapePoints.shape;
			const holes = shapePoints.holes;

			const reverse = ! ShapeUtils.isClockWise( vertices );

			if ( reverse ) {

				vertices = vertices.reverse();

				// Maybe we should also check if holes are in the opposite direction, just to be safe ...

				for ( let h = 0, hl = holes.length; h < hl; h ++ ) {

					const ahole = holes[ h ];

					if ( ShapeUtils.isClockWise( ahole ) ) {

						holes[ h ] = ahole.reverse();

					}

				}

			}


			const faces = ShapeUtils.triangulateShape( vertices, holes );

			/* Vertices */

			const contour = vertices; // vertices has all points but contour has only points of circumference

			for ( let h = 0, hl = holes.length; h < hl; h ++ ) {

				const ahole = holes[ h ];

				vertices = vertices.concat( ahole );

			}


			function scalePt2( pt, vec, size ) {

				if ( ! vec ) console.error( 'THREE.ExtrudeGeometry: vec does not exist' );

				return vec.clone().multiplyScalar( size ).add( pt );

			}

			const vlen = vertices.length, flen = faces.length;


			// Find directions for point movement


			function getBevelVec( inPt, inPrev, inNext ) {

				// computes for inPt the corresponding point inPt' on a new contour
				//   shifted by 1 unit (length of normalized vector) to the left
				// if we walk along contour clockwise, this new contour is outside the old one
				//
				// inPt' is the intersection of the two lines parallel to the two
				//  adjacent edges of inPt at a distance of 1 unit on the left side.

				let v_trans_x, v_trans_y, shrink_by; // resulting translation vector for inPt

				// good reading for geometry algorithms (here: line-line intersection)
				// http://geomalgorithms.com/a05-_intersect-1.html

				const v_prev_x = inPt.x - inPrev.x,
					v_prev_y = inPt.y - inPrev.y;
				const v_next_x = inNext.x - inPt.x,
					v_next_y = inNext.y - inPt.y;

				const v_prev_lensq = ( v_prev_x * v_prev_x + v_prev_y * v_prev_y );

				// check for collinear edges
				const collinear0 = ( v_prev_x * v_next_y - v_prev_y * v_next_x );

				if ( Math.abs( collinear0 ) > Number.EPSILON ) {

					// not collinear

					// length of vectors for normalizing

					const v_prev_len = Math.sqrt( v_prev_lensq );
					const v_next_len = Math.sqrt( v_next_x * v_next_x + v_next_y * v_next_y );

					// shift adjacent points by unit vectors to the left

					const ptPrevShift_x = ( inPrev.x - v_prev_y / v_prev_len );
					const ptPrevShift_y = ( inPrev.y + v_prev_x / v_prev_len );

					const ptNextShift_x = ( inNext.x - v_next_y / v_next_len );
					const ptNextShift_y = ( inNext.y + v_next_x / v_next_len );

					// scaling factor for v_prev to intersection point

					const sf = ( ( ptNextShift_x - ptPrevShift_x ) * v_next_y -
							( ptNextShift_y - ptPrevShift_y ) * v_next_x ) /
						( v_prev_x * v_next_y - v_prev_y * v_next_x );

					// vector from inPt to intersection point

					v_trans_x = ( ptPrevShift_x + v_prev_x * sf - inPt.x );
					v_trans_y = ( ptPrevShift_y + v_prev_y * sf - inPt.y );

					// Don't normalize!, otherwise sharp corners become ugly
					//  but prevent crazy spikes
					const v_trans_lensq = ( v_trans_x * v_trans_x + v_trans_y * v_trans_y );
					if ( v_trans_lensq <= 2 ) {

						return new Vector2( v_trans_x, v_trans_y );

					} else {

						shrink_by = Math.sqrt( v_trans_lensq / 2 );

					}

				} else {

					// handle special case of collinear edges

					let direction_eq = false; // assumes: opposite

					if ( v_prev_x > Number.EPSILON ) {

						if ( v_next_x > Number.EPSILON ) {

							direction_eq = true;

						}

					} else {

						if ( v_prev_x < - Number.EPSILON ) {

							if ( v_next_x < - Number.EPSILON ) {

								direction_eq = true;

							}

						} else {

							if ( Math.sign( v_prev_y ) === Math.sign( v_next_y ) ) {

								direction_eq = true;

							}

						}

					}

					if ( direction_eq ) {

						// console.log("Warning: lines are a straight sequence");
						v_trans_x = - v_prev_y;
						v_trans_y = v_prev_x;
						shrink_by = Math.sqrt( v_prev_lensq );

					} else {

						// console.log("Warning: lines are a straight spike");
						v_trans_x = v_prev_x;
						v_trans_y = v_prev_y;
						shrink_by = Math.sqrt( v_prev_lensq / 2 );

					}

				}

				return new Vector2( v_trans_x / shrink_by, v_trans_y / shrink_by );

			}


			const contourMovements = [];

			for ( let i = 0, il = contour.length, j = il - 1, k = i + 1; i < il; i ++, j ++, k ++ ) {

				if ( j === il ) j = 0;
				if ( k === il ) k = 0;

				//  (j)---(i)---(k)
				// console.log('i,j,k', i, j , k)

				contourMovements[ i ] = getBevelVec( contour[ i ], contour[ j ], contour[ k ] );

			}

			const holesMovements = [];
			let oneHoleMovements, verticesMovements = contourMovements.concat();

			for ( let h = 0, hl = holes.length; h < hl; h ++ ) {

				const ahole = holes[ h ];

				oneHoleMovements = [];

				for ( let i = 0, il = ahole.length, j = il - 1, k = i + 1; i < il; i ++, j ++, k ++ ) {

					if ( j === il ) j = 0;
					if ( k === il ) k = 0;

					//  (j)---(i)---(k)
					oneHoleMovements[ i ] = getBevelVec( ahole[ i ], ahole[ j ], ahole[ k ] );

				}

				holesMovements.push( oneHoleMovements );
				verticesMovements = verticesMovements.concat( oneHoleMovements );

			}


			// Loop bevelSegments, 1 for the front, 1 for the back

			for ( let b = 0; b < bevelSegments; b ++ ) {

				//for ( b = bevelSegments; b > 0; b -- ) {

				const t = b / bevelSegments;
				const z = bevelThickness * Math.cos( t * Math.PI / 2 );
				const bs = bevelSize * Math.sin( t * Math.PI / 2 ) + bevelOffset;

				// contract shape

				for ( let i = 0, il = contour.length; i < il; i ++ ) {

					const vert = scalePt2( contour[ i ], contourMovements[ i ], bs );

					v( vert.x, vert.y, - z );

				}

				// expand holes

				for ( let h = 0, hl = holes.length; h < hl; h ++ ) {

					const ahole = holes[ h ];
					oneHoleMovements = holesMovements[ h ];

					for ( let i = 0, il = ahole.length; i < il; i ++ ) {

						const vert = scalePt2( ahole[ i ], oneHoleMovements[ i ], bs );

						v( vert.x, vert.y, - z );

					}

				}

			}

			const bs = bevelSize + bevelOffset;

			// Back facing vertices

			for ( let i = 0; i < vlen; i ++ ) {

				const vert = bevelEnabled ? scalePt2( vertices[ i ], verticesMovements[ i ], bs ) : vertices[ i ];

				if ( ! extrudeByPath ) {

					v( vert.x, vert.y, 0 );

				} else {

					// v( vert.x, vert.y + extrudePts[ 0 ].y, extrudePts[ 0 ].x );

					normal.copy( splineTube.normals[ 0 ] ).multiplyScalar( vert.x );
					binormal.copy( splineTube.binormals[ 0 ] ).multiplyScalar( vert.y );

					position2.copy( extrudePts[ 0 ] ).add( normal ).add( binormal );

					v( position2.x, position2.y, position2.z );

				}

			}

			// Add stepped vertices...
			// Including front facing vertices

			for ( let s = 1; s <= steps; s ++ ) {

				for ( let i = 0; i < vlen; i ++ ) {

					const vert = bevelEnabled ? scalePt2( vertices[ i ], verticesMovements[ i ], bs ) : vertices[ i ];

					if ( ! extrudeByPath ) {

						v( vert.x, vert.y, depth / steps * s );

					} else {

						// v( vert.x, vert.y + extrudePts[ s - 1 ].y, extrudePts[ s - 1 ].x );

						normal.copy( splineTube.normals[ s ] ).multiplyScalar( vert.x );
						binormal.copy( splineTube.binormals[ s ] ).multiplyScalar( vert.y );

						position2.copy( extrudePts[ s ] ).add( normal ).add( binormal );

						v( position2.x, position2.y, position2.z );

					}

				}

			}


			// Add bevel segments planes

			//for ( b = 1; b <= bevelSegments; b ++ ) {
			for ( let b = bevelSegments - 1; b >= 0; b -- ) {

				const t = b / bevelSegments;
				const z = bevelThickness * Math.cos( t * Math.PI / 2 );
				const bs = bevelSize * Math.sin( t * Math.PI / 2 ) + bevelOffset;

				// contract shape

				for ( let i = 0, il = contour.length; i < il; i ++ ) {

					const vert = scalePt2( contour[ i ], contourMovements[ i ], bs );
					v( vert.x, vert.y, depth + z );

				}

				// expand holes

				for ( let h = 0, hl = holes.length; h < hl; h ++ ) {

					const ahole = holes[ h ];
					oneHoleMovements = holesMovements[ h ];

					for ( let i = 0, il = ahole.length; i < il; i ++ ) {

						const vert = scalePt2( ahole[ i ], oneHoleMovements[ i ], bs );

						if ( ! extrudeByPath ) {

							v( vert.x, vert.y, depth + z );

						} else {

							v( vert.x, vert.y + extrudePts[ steps - 1 ].y, extrudePts[ steps - 1 ].x + z );

						}

					}

				}

			}

			/* Faces */

			// Top and bottom faces

			buildLidFaces();

			// Sides faces

			buildSideFaces();


			/////  Internal functions

			function buildLidFaces() {

				const start = verticesArray.length / 3;

				if ( bevelEnabled ) {

					let layer = 0; // steps + 1
					let offset = vlen * layer;

					// Bottom faces

					for ( let i = 0; i < flen; i ++ ) {

						const face = faces[ i ];
						f3( face[ 2 ] + offset, face[ 1 ] + offset, face[ 0 ] + offset );

					}

					layer = steps + bevelSegments * 2;
					offset = vlen * layer;

					// Top faces

					for ( let i = 0; i < flen; i ++ ) {

						const face = faces[ i ];
						f3( face[ 0 ] + offset, face[ 1 ] + offset, face[ 2 ] + offset );

					}

				} else {

					// Bottom faces

					for ( let i = 0; i < flen; i ++ ) {

						const face = faces[ i ];
						f3( face[ 2 ], face[ 1 ], face[ 0 ] );

					}

					// Top faces

					for ( let i = 0; i < flen; i ++ ) {

						const face = faces[ i ];
						f3( face[ 0 ] + vlen * steps, face[ 1 ] + vlen * steps, face[ 2 ] + vlen * steps );

					}

				}

				scope.addGroup( start, verticesArray.length / 3 - start, 0 );

			}

			// Create faces for the z-sides of the shape

			function buildSideFaces() {

				const start = verticesArray.length / 3;
				let layeroffset = 0;
				sidewalls( contour, layeroffset );
				layeroffset += contour.length;

				for ( let h = 0, hl = holes.length; h < hl; h ++ ) {

					const ahole = holes[ h ];
					sidewalls( ahole, layeroffset );

					//, true
					layeroffset += ahole.length;

				}


				scope.addGroup( start, verticesArray.length / 3 - start, 1 );


			}

			function sidewalls( contour, layeroffset ) {

				let i = contour.length;

				while ( -- i >= 0 ) {

					const j = i;
					let k = i - 1;
					if ( k < 0 ) k = contour.length - 1;

					//console.log('b', i,j, i-1, k,vertices.length);

					for ( let s = 0, sl = ( steps + bevelSegments * 2 ); s < sl; s ++ ) {

						const slen1 = vlen * s;
						const slen2 = vlen * ( s + 1 );

						const a = layeroffset + j + slen1,
							b = layeroffset + k + slen1,
							c = layeroffset + k + slen2,
							d = layeroffset + j + slen2;

						f4( a, b, c, d );

					}

				}

			}

			function v( x, y, z ) {

				placeholder.push( x );
				placeholder.push( y );
				placeholder.push( z );

			}


			function f3( a, b, c ) {

				addVertex( a );
				addVertex( b );
				addVertex( c );

				const nextIndex = verticesArray.length / 3;
				const uvs = uvgen.generateTopUV( scope, verticesArray, nextIndex - 3, nextIndex - 2, nextIndex - 1 );

				addUV( uvs[ 0 ] );
				addUV( uvs[ 1 ] );
				addUV( uvs[ 2 ] );

			}

			function f4( a, b, c, d ) {

				addVertex( a );
				addVertex( b );
				addVertex( d );

				addVertex( b );
				addVertex( c );
				addVertex( d );


				const nextIndex = verticesArray.length / 3;
				const uvs = uvgen.generateSideWallUV( scope, verticesArray, nextIndex - 6, nextIndex - 3, nextIndex - 2, nextIndex - 1 );

				addUV( uvs[ 0 ] );
				addUV( uvs[ 1 ] );
				addUV( uvs[ 3 ] );

				addUV( uvs[ 1 ] );
				addUV( uvs[ 2 ] );
				addUV( uvs[ 3 ] );

			}

			function addVertex( index ) {

				verticesArray.push( placeholder[ index * 3 + 0 ] );
				verticesArray.push( placeholder[ index * 3 + 1 ] );
				verticesArray.push( placeholder[ index * 3 + 2 ] );

			}


			function addUV( vector2 ) {

				uvArray.push( vector2.x );
				uvArray.push( vector2.y );

			}

		}

	}

	toJSON() {

		const data = super.toJSON();

		const shapes = this.parameters.shapes;
		const options = this.parameters.options;

		return toJSON$1( shapes, options, data );

	}

	static fromJSON( data, shapes ) {

		const geometryShapes = [];

		for ( let j = 0, jl = data.shapes.length; j < jl; j ++ ) {

			const shape = shapes[ data.shapes[ j ] ];

			geometryShapes.push( shape );

		}

		const extrudePath = data.options.extrudePath;

		if ( extrudePath !== undefined ) {

			data.options.extrudePath = new Curves[ extrudePath.type ]().fromJSON( extrudePath );

		}

		return new ExtrudeGeometry( geometryShapes, data.options );

	}

}

const WorldUVGenerator = {

	generateTopUV: function ( geometry, vertices, indexA, indexB, indexC ) {

		const a_x = vertices[ indexA * 3 ];
		const a_y = vertices[ indexA * 3 + 1 ];
		const b_x = vertices[ indexB * 3 ];
		const b_y = vertices[ indexB * 3 + 1 ];
		const c_x = vertices[ indexC * 3 ];
		const c_y = vertices[ indexC * 3 + 1 ];

		return [
			new Vector2( a_x, a_y ),
			new Vector2( b_x, b_y ),
			new Vector2( c_x, c_y )
		];

	},

	generateSideWallUV: function ( geometry, vertices, indexA, indexB, indexC, indexD ) {

		const a_x = vertices[ indexA * 3 ];
		const a_y = vertices[ indexA * 3 + 1 ];
		const a_z = vertices[ indexA * 3 + 2 ];
		const b_x = vertices[ indexB * 3 ];
		const b_y = vertices[ indexB * 3 + 1 ];
		const b_z = vertices[ indexB * 3 + 2 ];
		const c_x = vertices[ indexC * 3 ];
		const c_y = vertices[ indexC * 3 + 1 ];
		const c_z = vertices[ indexC * 3 + 2 ];
		const d_x = vertices[ indexD * 3 ];
		const d_y = vertices[ indexD * 3 + 1 ];
		const d_z = vertices[ indexD * 3 + 2 ];

		if ( Math.abs( a_y - b_y ) < Math.abs( a_x - b_x ) ) {

			return [
				new Vector2( a_x, 1 - a_z ),
				new Vector2( b_x, 1 - b_z ),
				new Vector2( c_x, 1 - c_z ),
				new Vector2( d_x, 1 - d_z )
			];

		} else {

			return [
				new Vector2( a_y, 1 - a_z ),
				new Vector2( b_y, 1 - b_z ),
				new Vector2( c_y, 1 - c_z ),
				new Vector2( d_y, 1 - d_z )
			];

		}

	}

};

function toJSON$1( shapes, options, data ) {

	data.shapes = [];

	if ( Array.isArray( shapes ) ) {

		for ( let i = 0, l = shapes.length; i < l; i ++ ) {

			const shape = shapes[ i ];

			data.shapes.push( shape.uuid );

		}

	} else {

		data.shapes.push( shapes.uuid );

	}

	if ( options.extrudePath !== undefined ) data.options.extrudePath = options.extrudePath.toJSON();

	return data;

}

class IcosahedronGeometry extends PolyhedronGeometry {

	constructor( radius = 1, detail = 0 ) {

		const t = ( 1 + Math.sqrt( 5 ) ) / 2;

		const vertices = [
			- 1, t, 0, 	1, t, 0, 	- 1, - t, 0, 	1, - t, 0,
			0, - 1, t, 	0, 1, t,	0, - 1, - t, 	0, 1, - t,
			t, 0, - 1, 	t, 0, 1, 	- t, 0, - 1, 	- t, 0, 1
		];

		const indices = [
			0, 11, 5, 	0, 5, 1, 	0, 1, 7, 	0, 7, 10, 	0, 10, 11,
			1, 5, 9, 	5, 11, 4,	11, 10, 2,	10, 7, 6,	7, 1, 8,
			3, 9, 4, 	3, 4, 2,	3, 2, 6,	3, 6, 8,	3, 8, 9,
			4, 9, 5, 	2, 4, 11,	6, 2, 10,	8, 6, 7,	9, 8, 1
		];

		super( vertices, indices, radius, detail );

		this.type = 'IcosahedronGeometry';

		this.parameters = {
			radius: radius,
			detail: detail
		};

	}

	static fromJSON( data ) {

		return new IcosahedronGeometry( data.radius, data.detail );

	}

}

class LatheGeometry extends BufferGeometry {

	constructor( points = [ new Vector2( 0, 0.5 ), new Vector2( 0.5, 0 ), new Vector2( 0, - 0.5 ) ], segments = 12, phiStart = 0, phiLength = Math.PI * 2 ) {

		super();

		this.type = 'LatheGeometry';

		this.parameters = {
			points: points,
			segments: segments,
			phiStart: phiStart,
			phiLength: phiLength
		};

		segments = Math.floor( segments );

		// clamp phiLength so it's in range of [ 0, 2PI ]

		phiLength = clamp$1( phiLength, 0, Math.PI * 2 );

		// buffers

		const indices = [];
		const vertices = [];
		const uvs = [];
		const initNormals = [];
		const normals = [];

		// helper variables

		const inverseSegments = 1.0 / segments;
		const vertex = new Vector3();
		const uv = new Vector2();
		const normal = new Vector3();
		const curNormal = new Vector3();
		const prevNormal = new Vector3();
		let dx = 0;
		let dy = 0;

		// pre-compute normals for initial "meridian"

		for ( let j = 0; j <= ( points.length - 1 ); j ++ ) {

			switch ( j ) {

				case 0:				// special handling for 1st vertex on path

					dx = points[ j + 1 ].x - points[ j ].x;
					dy = points[ j + 1 ].y - points[ j ].y;

					normal.x = dy * 1.0;
					normal.y = - dx;
					normal.z = dy * 0.0;

					prevNormal.copy( normal );

					normal.normalize();

					initNormals.push( normal.x, normal.y, normal.z );

					break;

				case ( points.length - 1 ):	// special handling for last Vertex on path

					initNormals.push( prevNormal.x, prevNormal.y, prevNormal.z );

					break;

				default:			// default handling for all vertices in between

					dx = points[ j + 1 ].x - points[ j ].x;
					dy = points[ j + 1 ].y - points[ j ].y;

					normal.x = dy * 1.0;
					normal.y = - dx;
					normal.z = dy * 0.0;

					curNormal.copy( normal );

					normal.x += prevNormal.x;
					normal.y += prevNormal.y;
					normal.z += prevNormal.z;

					normal.normalize();

					initNormals.push( normal.x, normal.y, normal.z );

					prevNormal.copy( curNormal );

			}

		}

		// generate vertices, uvs and normals

		for ( let i = 0; i <= segments; i ++ ) {

			const phi = phiStart + i * inverseSegments * phiLength;

			const sin = Math.sin( phi );
			const cos = Math.cos( phi );

			for ( let j = 0; j <= ( points.length - 1 ); j ++ ) {

				// vertex

				vertex.x = points[ j ].x * sin;
				vertex.y = points[ j ].y;
				vertex.z = points[ j ].x * cos;

				vertices.push( vertex.x, vertex.y, vertex.z );

				// uv

				uv.x = i / segments;
				uv.y = j / ( points.length - 1 );

				uvs.push( uv.x, uv.y );

				// normal

				const x = initNormals[ 3 * j + 0 ] * sin;
				const y = initNormals[ 3 * j + 1 ];
				const z = initNormals[ 3 * j + 0 ] * cos;

				normals.push( x, y, z );

			}

		}

		// indices

		for ( let i = 0; i < segments; i ++ ) {

			for ( let j = 0; j < ( points.length - 1 ); j ++ ) {

				const base = j + i * points.length;

				const a = base;
				const b = base + points.length;
				const c = base + points.length + 1;
				const d = base + 1;

				// faces

				indices.push( a, b, d );
				indices.push( c, d, b );

			}

		}

		// build geometry

		this.setIndex( indices );
		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );

	}

	static fromJSON( data ) {

		return new LatheGeometry( data.points, data.segments, data.phiStart, data.phiLength );

	}

}

class OctahedronGeometry extends PolyhedronGeometry {

	constructor( radius = 1, detail = 0 ) {

		const vertices = [
			1, 0, 0, 	- 1, 0, 0,	0, 1, 0,
			0, - 1, 0, 	0, 0, 1,	0, 0, - 1
		];

		const indices = [
			0, 2, 4,	0, 4, 3,	0, 3, 5,
			0, 5, 2,	1, 2, 5,	1, 5, 3,
			1, 3, 4,	1, 4, 2
		];

		super( vertices, indices, radius, detail );

		this.type = 'OctahedronGeometry';

		this.parameters = {
			radius: radius,
			detail: detail
		};

	}

	static fromJSON( data ) {

		return new OctahedronGeometry( data.radius, data.detail );

	}

}

class RingGeometry extends BufferGeometry {

	constructor( innerRadius = 0.5, outerRadius = 1, thetaSegments = 8, phiSegments = 1, thetaStart = 0, thetaLength = Math.PI * 2 ) {

		super();

		this.type = 'RingGeometry';

		this.parameters = {
			innerRadius: innerRadius,
			outerRadius: outerRadius,
			thetaSegments: thetaSegments,
			phiSegments: phiSegments,
			thetaStart: thetaStart,
			thetaLength: thetaLength
		};

		thetaSegments = Math.max( 3, thetaSegments );
		phiSegments = Math.max( 1, phiSegments );

		// buffers

		const indices = [];
		const vertices = [];
		const normals = [];
		const uvs = [];

		// some helper variables

		let radius = innerRadius;
		const radiusStep = ( ( outerRadius - innerRadius ) / phiSegments );
		const vertex = new Vector3();
		const uv = new Vector2();

		// generate vertices, normals and uvs

		for ( let j = 0; j <= phiSegments; j ++ ) {

			for ( let i = 0; i <= thetaSegments; i ++ ) {

				// values are generate from the inside of the ring to the outside

				const segment = thetaStart + i / thetaSegments * thetaLength;

				// vertex

				vertex.x = radius * Math.cos( segment );
				vertex.y = radius * Math.sin( segment );

				vertices.push( vertex.x, vertex.y, vertex.z );

				// normal

				normals.push( 0, 0, 1 );

				// uv

				uv.x = ( vertex.x / outerRadius + 1 ) / 2;
				uv.y = ( vertex.y / outerRadius + 1 ) / 2;

				uvs.push( uv.x, uv.y );

			}

			// increase the radius for next row of vertices

			radius += radiusStep;

		}

		// indices

		for ( let j = 0; j < phiSegments; j ++ ) {

			const thetaSegmentLevel = j * ( thetaSegments + 1 );

			for ( let i = 0; i < thetaSegments; i ++ ) {

				const segment = i + thetaSegmentLevel;

				const a = segment;
				const b = segment + thetaSegments + 1;
				const c = segment + thetaSegments + 2;
				const d = segment + 1;

				// faces

				indices.push( a, b, d );
				indices.push( b, c, d );

			}

		}

		// build geometry

		this.setIndex( indices );
		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );

	}

	static fromJSON( data ) {

		return new RingGeometry( data.innerRadius, data.outerRadius, data.thetaSegments, data.phiSegments, data.thetaStart, data.thetaLength );

	}

}

class ShapeGeometry extends BufferGeometry {

	constructor( shapes = new Shape( [ new Vector2( 0, 0.5 ), new Vector2( - 0.5, - 0.5 ), new Vector2( 0.5, - 0.5 ) ] ), curveSegments = 12 ) {

		super();
		this.type = 'ShapeGeometry';

		this.parameters = {
			shapes: shapes,
			curveSegments: curveSegments
		};

		// buffers

		const indices = [];
		const vertices = [];
		const normals = [];
		const uvs = [];

		// helper variables

		let groupStart = 0;
		let groupCount = 0;

		// allow single and array values for "shapes" parameter

		if ( Array.isArray( shapes ) === false ) {

			addShape( shapes );

		} else {

			for ( let i = 0; i < shapes.length; i ++ ) {

				addShape( shapes[ i ] );

				this.addGroup( groupStart, groupCount, i ); // enables MultiMaterial support

				groupStart += groupCount;
				groupCount = 0;

			}

		}

		// build geometry

		this.setIndex( indices );
		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );


		// helper functions

		function addShape( shape ) {

			const indexOffset = vertices.length / 3;
			const points = shape.extractPoints( curveSegments );

			let shapeVertices = points.shape;
			const shapeHoles = points.holes;

			// check direction of vertices

			if ( ShapeUtils.isClockWise( shapeVertices ) === false ) {

				shapeVertices = shapeVertices.reverse();

			}

			for ( let i = 0, l = shapeHoles.length; i < l; i ++ ) {

				const shapeHole = shapeHoles[ i ];

				if ( ShapeUtils.isClockWise( shapeHole ) === true ) {

					shapeHoles[ i ] = shapeHole.reverse();

				}

			}

			const faces = ShapeUtils.triangulateShape( shapeVertices, shapeHoles );

			// join vertices of inner and outer paths to a single array

			for ( let i = 0, l = shapeHoles.length; i < l; i ++ ) {

				const shapeHole = shapeHoles[ i ];
				shapeVertices = shapeVertices.concat( shapeHole );

			}

			// vertices, normals, uvs

			for ( let i = 0, l = shapeVertices.length; i < l; i ++ ) {

				const vertex = shapeVertices[ i ];

				vertices.push( vertex.x, vertex.y, 0 );
				normals.push( 0, 0, 1 );
				uvs.push( vertex.x, vertex.y ); // world uvs

			}

			// incides

			for ( let i = 0, l = faces.length; i < l; i ++ ) {

				const face = faces[ i ];

				const a = face[ 0 ] + indexOffset;
				const b = face[ 1 ] + indexOffset;
				const c = face[ 2 ] + indexOffset;

				indices.push( a, b, c );
				groupCount += 3;

			}

		}

	}

	toJSON() {

		const data = super.toJSON();

		const shapes = this.parameters.shapes;

		return toJSON( shapes, data );

	}

	static fromJSON( data, shapes ) {

		const geometryShapes = [];

		for ( let j = 0, jl = data.shapes.length; j < jl; j ++ ) {

			const shape = shapes[ data.shapes[ j ] ];

			geometryShapes.push( shape );

		}

		return new ShapeGeometry( geometryShapes, data.curveSegments );

	}

}

function toJSON( shapes, data ) {

	data.shapes = [];

	if ( Array.isArray( shapes ) ) {

		for ( let i = 0, l = shapes.length; i < l; i ++ ) {

			const shape = shapes[ i ];

			data.shapes.push( shape.uuid );

		}

	} else {

		data.shapes.push( shapes.uuid );

	}

	return data;

}

class SphereGeometry extends BufferGeometry {

	constructor( radius = 1, widthSegments = 32, heightSegments = 16, phiStart = 0, phiLength = Math.PI * 2, thetaStart = 0, thetaLength = Math.PI ) {

		super();
		this.type = 'SphereGeometry';

		this.parameters = {
			radius: radius,
			widthSegments: widthSegments,
			heightSegments: heightSegments,
			phiStart: phiStart,
			phiLength: phiLength,
			thetaStart: thetaStart,
			thetaLength: thetaLength
		};

		widthSegments = Math.max( 3, Math.floor( widthSegments ) );
		heightSegments = Math.max( 2, Math.floor( heightSegments ) );

		const thetaEnd = Math.min( thetaStart + thetaLength, Math.PI );

		let index = 0;
		const grid = [];

		const vertex = new Vector3();
		const normal = new Vector3();

		// buffers

		const indices = [];
		const vertices = [];
		const normals = [];
		const uvs = [];

		// generate vertices, normals and uvs

		for ( let iy = 0; iy <= heightSegments; iy ++ ) {

			const verticesRow = [];

			const v = iy / heightSegments;

			// special case for the poles

			let uOffset = 0;

			if ( iy == 0 && thetaStart == 0 ) {

				uOffset = 0.5 / widthSegments;

			} else if ( iy == heightSegments && thetaEnd == Math.PI ) {

				uOffset = - 0.5 / widthSegments;

			}

			for ( let ix = 0; ix <= widthSegments; ix ++ ) {

				const u = ix / widthSegments;

				// vertex

				vertex.x = - radius * Math.cos( phiStart + u * phiLength ) * Math.sin( thetaStart + v * thetaLength );
				vertex.y = radius * Math.cos( thetaStart + v * thetaLength );
				vertex.z = radius * Math.sin( phiStart + u * phiLength ) * Math.sin( thetaStart + v * thetaLength );

				vertices.push( vertex.x, vertex.y, vertex.z );

				// normal

				normal.copy( vertex ).normalize();
				normals.push( normal.x, normal.y, normal.z );

				// uv

				uvs.push( u + uOffset, 1 - v );

				verticesRow.push( index ++ );

			}

			grid.push( verticesRow );

		}

		// indices

		for ( let iy = 0; iy < heightSegments; iy ++ ) {

			for ( let ix = 0; ix < widthSegments; ix ++ ) {

				const a = grid[ iy ][ ix + 1 ];
				const b = grid[ iy ][ ix ];
				const c = grid[ iy + 1 ][ ix ];
				const d = grid[ iy + 1 ][ ix + 1 ];

				if ( iy !== 0 || thetaStart > 0 ) indices.push( a, b, d );
				if ( iy !== heightSegments - 1 || thetaEnd < Math.PI ) indices.push( b, c, d );

			}

		}

		// build geometry

		this.setIndex( indices );
		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );

	}

	static fromJSON( data ) {

		return new SphereGeometry( data.radius, data.widthSegments, data.heightSegments, data.phiStart, data.phiLength, data.thetaStart, data.thetaLength );

	}

}

class TetrahedronGeometry extends PolyhedronGeometry {

	constructor( radius = 1, detail = 0 ) {

		const vertices = [
			1, 1, 1, 	- 1, - 1, 1, 	- 1, 1, - 1, 	1, - 1, - 1
		];

		const indices = [
			2, 1, 0, 	0, 3, 2,	1, 3, 0,	2, 3, 1
		];

		super( vertices, indices, radius, detail );

		this.type = 'TetrahedronGeometry';

		this.parameters = {
			radius: radius,
			detail: detail
		};

	}

	static fromJSON( data ) {

		return new TetrahedronGeometry( data.radius, data.detail );

	}

}

class TorusGeometry extends BufferGeometry {

	constructor( radius = 1, tube = 0.4, radialSegments = 8, tubularSegments = 6, arc = Math.PI * 2 ) {

		super();
		this.type = 'TorusGeometry';

		this.parameters = {
			radius: radius,
			tube: tube,
			radialSegments: radialSegments,
			tubularSegments: tubularSegments,
			arc: arc
		};

		radialSegments = Math.floor( radialSegments );
		tubularSegments = Math.floor( tubularSegments );

		// buffers

		const indices = [];
		const vertices = [];
		const normals = [];
		const uvs = [];

		// helper variables

		const center = new Vector3();
		const vertex = new Vector3();
		const normal = new Vector3();

		// generate vertices, normals and uvs

		for ( let j = 0; j <= radialSegments; j ++ ) {

			for ( let i = 0; i <= tubularSegments; i ++ ) {

				const u = i / tubularSegments * arc;
				const v = j / radialSegments * Math.PI * 2;

				// vertex

				vertex.x = ( radius + tube * Math.cos( v ) ) * Math.cos( u );
				vertex.y = ( radius + tube * Math.cos( v ) ) * Math.sin( u );
				vertex.z = tube * Math.sin( v );

				vertices.push( vertex.x, vertex.y, vertex.z );

				// normal

				center.x = radius * Math.cos( u );
				center.y = radius * Math.sin( u );
				normal.subVectors( vertex, center ).normalize();

				normals.push( normal.x, normal.y, normal.z );

				// uv

				uvs.push( i / tubularSegments );
				uvs.push( j / radialSegments );

			}

		}

		// generate indices

		for ( let j = 1; j <= radialSegments; j ++ ) {

			for ( let i = 1; i <= tubularSegments; i ++ ) {

				// indices

				const a = ( tubularSegments + 1 ) * j + i - 1;
				const b = ( tubularSegments + 1 ) * ( j - 1 ) + i - 1;
				const c = ( tubularSegments + 1 ) * ( j - 1 ) + i;
				const d = ( tubularSegments + 1 ) * j + i;

				// faces

				indices.push( a, b, d );
				indices.push( b, c, d );

			}

		}

		// build geometry

		this.setIndex( indices );
		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );

	}

	static fromJSON( data ) {

		return new TorusGeometry( data.radius, data.tube, data.radialSegments, data.tubularSegments, data.arc );

	}

}

class TorusKnotGeometry extends BufferGeometry {

	constructor( radius = 1, tube = 0.4, tubularSegments = 64, radialSegments = 8, p = 2, q = 3 ) {

		super();
		this.type = 'TorusKnotGeometry';

		this.parameters = {
			radius: radius,
			tube: tube,
			tubularSegments: tubularSegments,
			radialSegments: radialSegments,
			p: p,
			q: q
		};

		tubularSegments = Math.floor( tubularSegments );
		radialSegments = Math.floor( radialSegments );

		// buffers

		const indices = [];
		const vertices = [];
		const normals = [];
		const uvs = [];

		// helper variables

		const vertex = new Vector3();
		const normal = new Vector3();

		const P1 = new Vector3();
		const P2 = new Vector3();

		const B = new Vector3();
		const T = new Vector3();
		const N = new Vector3();

		// generate vertices, normals and uvs

		for ( let i = 0; i <= tubularSegments; ++ i ) {

			// the radian "u" is used to calculate the position on the torus curve of the current tubular segement

			const u = i / tubularSegments * p * Math.PI * 2;

			// now we calculate two points. P1 is our current position on the curve, P2 is a little farther ahead.
			// these points are used to create a special "coordinate space", which is necessary to calculate the correct vertex positions

			calculatePositionOnCurve( u, p, q, radius, P1 );
			calculatePositionOnCurve( u + 0.01, p, q, radius, P2 );

			// calculate orthonormal basis

			T.subVectors( P2, P1 );
			N.addVectors( P2, P1 );
			B.crossVectors( T, N );
			N.crossVectors( B, T );

			// normalize B, N. T can be ignored, we don't use it

			B.normalize();
			N.normalize();

			for ( let j = 0; j <= radialSegments; ++ j ) {

				// now calculate the vertices. they are nothing more than an extrusion of the torus curve.
				// because we extrude a shape in the xy-plane, there is no need to calculate a z-value.

				const v = j / radialSegments * Math.PI * 2;
				const cx = - tube * Math.cos( v );
				const cy = tube * Math.sin( v );

				// now calculate the final vertex position.
				// first we orient the extrusion with our basis vectos, then we add it to the current position on the curve

				vertex.x = P1.x + ( cx * N.x + cy * B.x );
				vertex.y = P1.y + ( cx * N.y + cy * B.y );
				vertex.z = P1.z + ( cx * N.z + cy * B.z );

				vertices.push( vertex.x, vertex.y, vertex.z );

				// normal (P1 is always the center/origin of the extrusion, thus we can use it to calculate the normal)

				normal.subVectors( vertex, P1 ).normalize();

				normals.push( normal.x, normal.y, normal.z );

				// uv

				uvs.push( i / tubularSegments );
				uvs.push( j / radialSegments );

			}

		}

		// generate indices

		for ( let j = 1; j <= tubularSegments; j ++ ) {

			for ( let i = 1; i <= radialSegments; i ++ ) {

				// indices

				const a = ( radialSegments + 1 ) * ( j - 1 ) + ( i - 1 );
				const b = ( radialSegments + 1 ) * j + ( i - 1 );
				const c = ( radialSegments + 1 ) * j + i;
				const d = ( radialSegments + 1 ) * ( j - 1 ) + i;

				// faces

				indices.push( a, b, d );
				indices.push( b, c, d );

			}

		}

		// build geometry

		this.setIndex( indices );
		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );

		// this function calculates the current position on the torus curve

		function calculatePositionOnCurve( u, p, q, radius, position ) {

			const cu = Math.cos( u );
			const su = Math.sin( u );
			const quOverP = q / p * u;
			const cs = Math.cos( quOverP );

			position.x = radius * ( 2 + cs ) * 0.5 * cu;
			position.y = radius * ( 2 + cs ) * su * 0.5;
			position.z = radius * Math.sin( quOverP ) * 0.5;

		}

	}

	static fromJSON( data ) {

		return new TorusKnotGeometry( data.radius, data.tube, data.tubularSegments, data.radialSegments, data.p, data.q );

	}

}

class TubeGeometry extends BufferGeometry {

	constructor( path = new QuadraticBezierCurve3( new Vector3( - 1, - 1, 0 ), new Vector3( - 1, 1, 0 ), new Vector3( 1, 1, 0 ) ), tubularSegments = 64, radius = 1, radialSegments = 8, closed = false ) {

		super();
		this.type = 'TubeGeometry';

		this.parameters = {
			path: path,
			tubularSegments: tubularSegments,
			radius: radius,
			radialSegments: radialSegments,
			closed: closed
		};

		const frames = path.computeFrenetFrames( tubularSegments, closed );

		// expose internals

		this.tangents = frames.tangents;
		this.normals = frames.normals;
		this.binormals = frames.binormals;

		// helper variables

		const vertex = new Vector3();
		const normal = new Vector3();
		const uv = new Vector2();
		let P = new Vector3();

		// buffer

		const vertices = [];
		const normals = [];
		const uvs = [];
		const indices = [];

		// create buffer data

		generateBufferData();

		// build geometry

		this.setIndex( indices );
		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );

		// functions

		function generateBufferData() {

			for ( let i = 0; i < tubularSegments; i ++ ) {

				generateSegment( i );

			}

			// if the geometry is not closed, generate the last row of vertices and normals
			// at the regular position on the given path
			//
			// if the geometry is closed, duplicate the first row of vertices and normals (uvs will differ)

			generateSegment( ( closed === false ) ? tubularSegments : 0 );

			// uvs are generated in a separate function.
			// this makes it easy compute correct values for closed geometries

			generateUVs();

			// finally create faces

			generateIndices();

		}

		function generateSegment( i ) {

			// we use getPointAt to sample evenly distributed points from the given path

			P = path.getPointAt( i / tubularSegments, P );

			// retrieve corresponding normal and binormal

			const N = frames.normals[ i ];
			const B = frames.binormals[ i ];

			// generate normals and vertices for the current segment

			for ( let j = 0; j <= radialSegments; j ++ ) {

				const v = j / radialSegments * Math.PI * 2;

				const sin = Math.sin( v );
				const cos = - Math.cos( v );

				// normal

				normal.x = ( cos * N.x + sin * B.x );
				normal.y = ( cos * N.y + sin * B.y );
				normal.z = ( cos * N.z + sin * B.z );
				normal.normalize();

				normals.push( normal.x, normal.y, normal.z );

				// vertex

				vertex.x = P.x + radius * normal.x;
				vertex.y = P.y + radius * normal.y;
				vertex.z = P.z + radius * normal.z;

				vertices.push( vertex.x, vertex.y, vertex.z );

			}

		}

		function generateIndices() {

			for ( let j = 1; j <= tubularSegments; j ++ ) {

				for ( let i = 1; i <= radialSegments; i ++ ) {

					const a = ( radialSegments + 1 ) * ( j - 1 ) + ( i - 1 );
					const b = ( radialSegments + 1 ) * j + ( i - 1 );
					const c = ( radialSegments + 1 ) * j + i;
					const d = ( radialSegments + 1 ) * ( j - 1 ) + i;

					// faces

					indices.push( a, b, d );
					indices.push( b, c, d );

				}

			}

		}

		function generateUVs() {

			for ( let i = 0; i <= tubularSegments; i ++ ) {

				for ( let j = 0; j <= radialSegments; j ++ ) {

					uv.x = i / tubularSegments;
					uv.y = j / radialSegments;

					uvs.push( uv.x, uv.y );

				}

			}

		}

	}

	toJSON() {

		const data = super.toJSON();

		data.path = this.parameters.path.toJSON();

		return data;

	}

	static fromJSON( data ) {

		// This only works for built-in curves (e.g. CatmullRomCurve3).
		// User defined curves or instances of CurvePath will not be deserialized.
		return new TubeGeometry(
			new Curves[ data.path.type ]().fromJSON( data.path ),
			data.tubularSegments,
			data.radius,
			data.radialSegments,
			data.closed
		);

	}

}

class WireframeGeometry extends BufferGeometry {

	constructor( geometry = null ) {

		super();
		this.type = 'WireframeGeometry';

		this.parameters = {
			geometry: geometry
		};

		if ( geometry !== null ) {

			// buffer

			const vertices = [];
			const edges = new Set();

			// helper variables

			const start = new Vector3();
			const end = new Vector3();

			if ( geometry.index !== null ) {

				// indexed BufferGeometry

				const position = geometry.attributes.position;
				const indices = geometry.index;
				let groups = geometry.groups;

				if ( groups.length === 0 ) {

					groups = [ { start: 0, count: indices.count, materialIndex: 0 } ];

				}

				// create a data structure that contains all eges without duplicates

				for ( let o = 0, ol = groups.length; o < ol; ++ o ) {

					const group = groups[ o ];

					const groupStart = group.start;
					const groupCount = group.count;

					for ( let i = groupStart, l = ( groupStart + groupCount ); i < l; i += 3 ) {

						for ( let j = 0; j < 3; j ++ ) {

							const index1 = indices.getX( i + j );
							const index2 = indices.getX( i + ( j + 1 ) % 3 );

							start.fromBufferAttribute( position, index1 );
							end.fromBufferAttribute( position, index2 );

							if ( isUniqueEdge( start, end, edges ) === true ) {

								vertices.push( start.x, start.y, start.z );
								vertices.push( end.x, end.y, end.z );

							}

						}

					}

				}

			} else {

				// non-indexed BufferGeometry

				const position = geometry.attributes.position;

				for ( let i = 0, l = ( position.count / 3 ); i < l; i ++ ) {

					for ( let j = 0; j < 3; j ++ ) {

						// three edges per triangle, an edge is represented as (index1, index2)
						// e.g. the first triangle has the following edges: (0,1),(1,2),(2,0)

						const index1 = 3 * i + j;
						const index2 = 3 * i + ( ( j + 1 ) % 3 );

						start.fromBufferAttribute( position, index1 );
						end.fromBufferAttribute( position, index2 );

						if ( isUniqueEdge( start, end, edges ) === true ) {

							vertices.push( start.x, start.y, start.z );
							vertices.push( end.x, end.y, end.z );

						}

					}

				}

			}

			// build geometry

			this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );

		}

	}

}

function isUniqueEdge( start, end, edges ) {

	const hash1 = `${start.x},${start.y},${start.z}-${end.x},${end.y},${end.z}`;
	const hash2 = `${end.x},${end.y},${end.z}-${start.x},${start.y},${start.z}`; // coincident edge

	if ( edges.has( hash1 ) === true || edges.has( hash2 ) === true ) {

		return false;

	} else {

		edges.add( hash1 );
		edges.add( hash2 );
		return true;

	}

}

var Geometries = /*#__PURE__*/Object.freeze({
	__proto__: null,
	BoxGeometry: BoxGeometry,
	BoxBufferGeometry: BoxGeometry,
	CircleGeometry: CircleGeometry,
	CircleBufferGeometry: CircleGeometry,
	ConeGeometry: ConeGeometry,
	ConeBufferGeometry: ConeGeometry,
	CylinderGeometry: CylinderGeometry,
	CylinderBufferGeometry: CylinderGeometry,
	DodecahedronGeometry: DodecahedronGeometry,
	DodecahedronBufferGeometry: DodecahedronGeometry,
	EdgesGeometry: EdgesGeometry,
	ExtrudeGeometry: ExtrudeGeometry,
	ExtrudeBufferGeometry: ExtrudeGeometry,
	IcosahedronGeometry: IcosahedronGeometry,
	IcosahedronBufferGeometry: IcosahedronGeometry,
	LatheGeometry: LatheGeometry,
	LatheBufferGeometry: LatheGeometry,
	OctahedronGeometry: OctahedronGeometry,
	OctahedronBufferGeometry: OctahedronGeometry,
	PlaneGeometry: PlaneGeometry,
	PlaneBufferGeometry: PlaneGeometry,
	PolyhedronGeometry: PolyhedronGeometry,
	PolyhedronBufferGeometry: PolyhedronGeometry,
	RingGeometry: RingGeometry,
	RingBufferGeometry: RingGeometry,
	ShapeGeometry: ShapeGeometry,
	ShapeBufferGeometry: ShapeGeometry,
	SphereGeometry: SphereGeometry,
	SphereBufferGeometry: SphereGeometry,
	TetrahedronGeometry: TetrahedronGeometry,
	TetrahedronBufferGeometry: TetrahedronGeometry,
	TorusGeometry: TorusGeometry,
	TorusBufferGeometry: TorusGeometry,
	TorusKnotGeometry: TorusKnotGeometry,
	TorusKnotBufferGeometry: TorusKnotGeometry,
	TubeGeometry: TubeGeometry,
	TubeBufferGeometry: TubeGeometry,
	WireframeGeometry: WireframeGeometry
});

/**
 * parameters = {
 *  color: <THREE.Color>
 * }
 */

class ShadowMaterial extends Material {

	constructor( parameters ) {

		super();

		this.type = 'ShadowMaterial';

		this.color = new Color( 0x000000 );
		this.transparent = true;

		this.setValues( parameters );

	}

	copy( source ) {

		super.copy( source );

		this.color.copy( source.color );

		return this;

	}

}

ShadowMaterial.prototype.isShadowMaterial = true;

class RawShaderMaterial extends ShaderMaterial {

	constructor( parameters ) {

		super( parameters );

		this.type = 'RawShaderMaterial';

	}

}

RawShaderMaterial.prototype.isRawShaderMaterial = true;

/**
 * parameters = {
 *  color: <hex>,
 *  roughness: <float>,
 *  metalness: <float>,
 *  opacity: <float>,
 *
 *  map: new THREE.Texture( <Image> ),
 *
 *  lightMap: new THREE.Texture( <Image> ),
 *  lightMapIntensity: <float>
 *
 *  aoMap: new THREE.Texture( <Image> ),
 *  aoMapIntensity: <float>
 *
 *  emissive: <hex>,
 *  emissiveIntensity: <float>
 *  emissiveMap: new THREE.Texture( <Image> ),
 *
 *  bumpMap: new THREE.Texture( <Image> ),
 *  bumpScale: <float>,
 *
 *  normalMap: new THREE.Texture( <Image> ),
 *  normalMapType: THREE.TangentSpaceNormalMap,
 *  normalScale: <Vector2>,
 *
 *  displacementMap: new THREE.Texture( <Image> ),
 *  displacementScale: <float>,
 *  displacementBias: <float>,
 *
 *  roughnessMap: new THREE.Texture( <Image> ),
 *
 *  metalnessMap: new THREE.Texture( <Image> ),
 *
 *  alphaMap: new THREE.Texture( <Image> ),
 *
 *  envMap: new THREE.CubeTexture( [posx, negx, posy, negy, posz, negz] ),
 *  envMapIntensity: <float>
 *
 *  refractionRatio: <float>,
 *
 *  wireframe: <boolean>,
 *  wireframeLinewidth: <float>,
 *
 *  flatShading: <bool>
 * }
 */

class MeshStandardMaterial extends Material {

	constructor( parameters ) {

		super();

		this.defines = { 'STANDARD': '' };

		this.type = 'MeshStandardMaterial';

		this.color = new Color( 0xffffff ); // diffuse
		this.roughness = 1.0;
		this.metalness = 0.0;

		this.map = null;

		this.lightMap = null;
		this.lightMapIntensity = 1.0;

		this.aoMap = null;
		this.aoMapIntensity = 1.0;

		this.emissive = new Color( 0x000000 );
		this.emissiveIntensity = 1.0;
		this.emissiveMap = null;

		this.bumpMap = null;
		this.bumpScale = 1;

		this.normalMap = null;
		this.normalMapType = TangentSpaceNormalMap;
		this.normalScale = new Vector2( 1, 1 );

		this.displacementMap = null;
		this.displacementScale = 1;
		this.displacementBias = 0;

		this.roughnessMap = null;

		this.metalnessMap = null;

		this.alphaMap = null;

		this.envMap = null;
		this.envMapIntensity = 1.0;

		this.refractionRatio = 0.98;

		this.wireframe = false;
		this.wireframeLinewidth = 1;
		this.wireframeLinecap = 'round';
		this.wireframeLinejoin = 'round';

		this.flatShading = false;

		this.setValues( parameters );

	}

	copy( source ) {

		super.copy( source );

		this.defines = { 'STANDARD': '' };

		this.color.copy( source.color );
		this.roughness = source.roughness;
		this.metalness = source.metalness;

		this.map = source.map;

		this.lightMap = source.lightMap;
		this.lightMapIntensity = source.lightMapIntensity;

		this.aoMap = source.aoMap;
		this.aoMapIntensity = source.aoMapIntensity;

		this.emissive.copy( source.emissive );
		this.emissiveMap = source.emissiveMap;
		this.emissiveIntensity = source.emissiveIntensity;

		this.bumpMap = source.bumpMap;
		this.bumpScale = source.bumpScale;

		this.normalMap = source.normalMap;
		this.normalMapType = source.normalMapType;
		this.normalScale.copy( source.normalScale );

		this.displacementMap = source.displacementMap;
		this.displacementScale = source.displacementScale;
		this.displacementBias = source.displacementBias;

		this.roughnessMap = source.roughnessMap;

		this.metalnessMap = source.metalnessMap;

		this.alphaMap = source.alphaMap;

		this.envMap = source.envMap;
		this.envMapIntensity = source.envMapIntensity;

		this.refractionRatio = source.refractionRatio;

		this.wireframe = source.wireframe;
		this.wireframeLinewidth = source.wireframeLinewidth;
		this.wireframeLinecap = source.wireframeLinecap;
		this.wireframeLinejoin = source.wireframeLinejoin;

		this.flatShading = source.flatShading;

		return this;

	}

}

MeshStandardMaterial.prototype.isMeshStandardMaterial = true;

/**
 * parameters = {
 *  clearcoat: <float>,
 *  clearcoatMap: new THREE.Texture( <Image> ),
 *  clearcoatRoughness: <float>,
 *  clearcoatRoughnessMap: new THREE.Texture( <Image> ),
 *  clearcoatNormalScale: <Vector2>,
 *  clearcoatNormalMap: new THREE.Texture( <Image> ),
 *
 *  ior: <float>,
 *  reflectivity: <float>,
 *
 *  sheen: <float>,
 *  sheenColor: <Color>,
 *  sheenColorMap: new THREE.Texture( <Image> ),
 *  sheenRoughness: <float>,
 *  sheenRoughnessMap: new THREE.Texture( <Image> ),
 *
 *  transmission: <float>,
 *  transmissionMap: new THREE.Texture( <Image> ),
 *
 *  thickness: <float>,
 *  thicknessMap: new THREE.Texture( <Image> ),
 *  attenuationDistance: <float>,
 *  attenuationColor: <Color>,
 *
 *  specularIntensity: <float>,
 *  specularIntensityMap: new THREE.Texture( <Image> ),
 *  specularColor: <Color>,
 *  specularColorMap: new THREE.Texture( <Image> )
 * }
 */

class MeshPhysicalMaterial extends MeshStandardMaterial {

	constructor( parameters ) {

		super();

		this.defines = {

			'STANDARD': '',
			'PHYSICAL': ''

		};

		this.type = 'MeshPhysicalMaterial';

		this.clearcoatMap = null;
		this.clearcoatRoughness = 0.0;
		this.clearcoatRoughnessMap = null;
		this.clearcoatNormalScale = new Vector2( 1, 1 );
		this.clearcoatNormalMap = null;

		this.ior = 1.5;

		Object.defineProperty( this, 'reflectivity', {
			get: function () {

				return ( clamp$1( 2.5 * ( this.ior - 1 ) / ( this.ior + 1 ), 0, 1 ) );

			},
			set: function ( reflectivity ) {

				this.ior = ( 1 + 0.4 * reflectivity ) / ( 1 - 0.4 * reflectivity );

			}
		} );

		this.sheenColor = new Color( 0x000000 );
		this.sheenColorMap = null;
		this.sheenRoughness = 1.0;
		this.sheenRoughnessMap = null;

		this.transmissionMap = null;

		this.thickness = 0;
		this.thicknessMap = null;
		this.attenuationDistance = 0.0;
		this.attenuationColor = new Color( 1, 1, 1 );

		this.specularIntensity = 1.0;
		this.specularIntensityMap = null;
		this.specularColor = new Color( 1, 1, 1 );
		this.specularColorMap = null;

		this._sheen = 0.0;
		this._clearcoat = 0;
		this._transmission = 0;

		this.setValues( parameters );

	}

	get sheen() {

		return this._sheen;

	}

	set sheen( value ) {

		if ( this._sheen > 0 !== value > 0 ) {

			this.version ++;

		}

		this._sheen = value;

	}

	get clearcoat() {

		return this._clearcoat;

	}

	set clearcoat( value ) {

		if ( this._clearcoat > 0 !== value > 0 ) {

			this.version ++;

		}

		this._clearcoat = value;

	}

	get transmission() {

		return this._transmission;

	}

	set transmission( value ) {

		if ( this._transmission > 0 !== value > 0 ) {

			this.version ++;

		}

		this._transmission = value;

	}

	copy( source ) {

		super.copy( source );

		this.defines = {

			'STANDARD': '',
			'PHYSICAL': ''

		};

		this.clearcoat = source.clearcoat;
		this.clearcoatMap = source.clearcoatMap;
		this.clearcoatRoughness = source.clearcoatRoughness;
		this.clearcoatRoughnessMap = source.clearcoatRoughnessMap;
		this.clearcoatNormalMap = source.clearcoatNormalMap;
		this.clearcoatNormalScale.copy( source.clearcoatNormalScale );

		this.ior = source.ior;

		this.sheen = source.sheen;
		this.sheenColor.copy( source.sheenColor );
		this.sheenColorMap = source.sheenColorMap;
		this.sheenRoughness = source.sheenRoughness;
		this.sheenRoughnessMap = source.sheenRoughnessMap;

		this.transmission = source.transmission;
		this.transmissionMap = source.transmissionMap;

		this.thickness = source.thickness;
		this.thicknessMap = source.thicknessMap;
		this.attenuationDistance = source.attenuationDistance;
		this.attenuationColor.copy( source.attenuationColor );

		this.specularIntensity = source.specularIntensity;
		this.specularIntensityMap = source.specularIntensityMap;
		this.specularColor.copy( source.specularColor );
		this.specularColorMap = source.specularColorMap;

		return this;

	}

}

MeshPhysicalMaterial.prototype.isMeshPhysicalMaterial = true;

/**
 * parameters = {
 *  color: <hex>,
 *  specular: <hex>,
 *  shininess: <float>,
 *  opacity: <float>,
 *
 *  map: new THREE.Texture( <Image> ),
 *
 *  lightMap: new THREE.Texture( <Image> ),
 *  lightMapIntensity: <float>
 *
 *  aoMap: new THREE.Texture( <Image> ),
 *  aoMapIntensity: <float>
 *
 *  emissive: <hex>,
 *  emissiveIntensity: <float>
 *  emissiveMap: new THREE.Texture( <Image> ),
 *
 *  bumpMap: new THREE.Texture( <Image> ),
 *  bumpScale: <float>,
 *
 *  normalMap: new THREE.Texture( <Image> ),
 *  normalMapType: THREE.TangentSpaceNormalMap,
 *  normalScale: <Vector2>,
 *
 *  displacementMap: new THREE.Texture( <Image> ),
 *  displacementScale: <float>,
 *  displacementBias: <float>,
 *
 *  specularMap: new THREE.Texture( <Image> ),
 *
 *  alphaMap: new THREE.Texture( <Image> ),
 *
 *  envMap: new THREE.CubeTexture( [posx, negx, posy, negy, posz, negz] ),
 *  combine: THREE.MultiplyOperation,
 *  reflectivity: <float>,
 *  refractionRatio: <float>,
 *
 *  wireframe: <boolean>,
 *  wireframeLinewidth: <float>,
 *
 *  flatShading: <bool>
 * }
 */

class MeshPhongMaterial extends Material {

	constructor( parameters ) {

		super();

		this.type = 'MeshPhongMaterial';

		this.color = new Color( 0xffffff ); // diffuse
		this.specular = new Color( 0x111111 );
		this.shininess = 30;

		this.map = null;

		this.lightMap = null;
		this.lightMapIntensity = 1.0;

		this.aoMap = null;
		this.aoMapIntensity = 1.0;

		this.emissive = new Color( 0x000000 );
		this.emissiveIntensity = 1.0;
		this.emissiveMap = null;

		this.bumpMap = null;
		this.bumpScale = 1;

		this.normalMap = null;
		this.normalMapType = TangentSpaceNormalMap;
		this.normalScale = new Vector2( 1, 1 );

		this.displacementMap = null;
		this.displacementScale = 1;
		this.displacementBias = 0;

		this.specularMap = null;

		this.alphaMap = null;

		this.envMap = null;
		this.combine = MultiplyOperation;
		this.reflectivity = 1;
		this.refractionRatio = 0.98;

		this.wireframe = false;
		this.wireframeLinewidth = 1;
		this.wireframeLinecap = 'round';
		this.wireframeLinejoin = 'round';

		this.flatShading = false;

		this.setValues( parameters );

	}

	copy( source ) {

		super.copy( source );

		this.color.copy( source.color );
		this.specular.copy( source.specular );
		this.shininess = source.shininess;

		this.map = source.map;

		this.lightMap = source.lightMap;
		this.lightMapIntensity = source.lightMapIntensity;

		this.aoMap = source.aoMap;
		this.aoMapIntensity = source.aoMapIntensity;

		this.emissive.copy( source.emissive );
		this.emissiveMap = source.emissiveMap;
		this.emissiveIntensity = source.emissiveIntensity;

		this.bumpMap = source.bumpMap;
		this.bumpScale = source.bumpScale;

		this.normalMap = source.normalMap;
		this.normalMapType = source.normalMapType;
		this.normalScale.copy( source.normalScale );

		this.displacementMap = source.displacementMap;
		this.displacementScale = source.displacementScale;
		this.displacementBias = source.displacementBias;

		this.specularMap = source.specularMap;

		this.alphaMap = source.alphaMap;

		this.envMap = source.envMap;
		this.combine = source.combine;
		this.reflectivity = source.reflectivity;
		this.refractionRatio = source.refractionRatio;

		this.wireframe = source.wireframe;
		this.wireframeLinewidth = source.wireframeLinewidth;
		this.wireframeLinecap = source.wireframeLinecap;
		this.wireframeLinejoin = source.wireframeLinejoin;

		this.flatShading = source.flatShading;

		return this;

	}

}

MeshPhongMaterial.prototype.isMeshPhongMaterial = true;

/**
 * parameters = {
 *  color: <hex>,
 *
 *  map: new THREE.Texture( <Image> ),
 *  gradientMap: new THREE.Texture( <Image> ),
 *
 *  lightMap: new THREE.Texture( <Image> ),
 *  lightMapIntensity: <float>
 *
 *  aoMap: new THREE.Texture( <Image> ),
 *  aoMapIntensity: <float>
 *
 *  emissive: <hex>,
 *  emissiveIntensity: <float>
 *  emissiveMap: new THREE.Texture( <Image> ),
 *
 *  bumpMap: new THREE.Texture( <Image> ),
 *  bumpScale: <float>,
 *
 *  normalMap: new THREE.Texture( <Image> ),
 *  normalMapType: THREE.TangentSpaceNormalMap,
 *  normalScale: <Vector2>,
 *
 *  displacementMap: new THREE.Texture( <Image> ),
 *  displacementScale: <float>,
 *  displacementBias: <float>,
 *
 *  alphaMap: new THREE.Texture( <Image> ),
 *
 *  wireframe: <boolean>,
 *  wireframeLinewidth: <float>,
 *
 * }
 */

class MeshToonMaterial extends Material {

	constructor( parameters ) {

		super();

		this.defines = { 'TOON': '' };

		this.type = 'MeshToonMaterial';

		this.color = new Color( 0xffffff );

		this.map = null;
		this.gradientMap = null;

		this.lightMap = null;
		this.lightMapIntensity = 1.0;

		this.aoMap = null;
		this.aoMapIntensity = 1.0;

		this.emissive = new Color( 0x000000 );
		this.emissiveIntensity = 1.0;
		this.emissiveMap = null;

		this.bumpMap = null;
		this.bumpScale = 1;

		this.normalMap = null;
		this.normalMapType = TangentSpaceNormalMap;
		this.normalScale = new Vector2( 1, 1 );

		this.displacementMap = null;
		this.displacementScale = 1;
		this.displacementBias = 0;

		this.alphaMap = null;

		this.wireframe = false;
		this.wireframeLinewidth = 1;
		this.wireframeLinecap = 'round';
		this.wireframeLinejoin = 'round';

		this.setValues( parameters );

	}

	copy( source ) {

		super.copy( source );

		this.color.copy( source.color );

		this.map = source.map;
		this.gradientMap = source.gradientMap;

		this.lightMap = source.lightMap;
		this.lightMapIntensity = source.lightMapIntensity;

		this.aoMap = source.aoMap;
		this.aoMapIntensity = source.aoMapIntensity;

		this.emissive.copy( source.emissive );
		this.emissiveMap = source.emissiveMap;
		this.emissiveIntensity = source.emissiveIntensity;

		this.bumpMap = source.bumpMap;
		this.bumpScale = source.bumpScale;

		this.normalMap = source.normalMap;
		this.normalMapType = source.normalMapType;
		this.normalScale.copy( source.normalScale );

		this.displacementMap = source.displacementMap;
		this.displacementScale = source.displacementScale;
		this.displacementBias = source.displacementBias;

		this.alphaMap = source.alphaMap;

		this.wireframe = source.wireframe;
		this.wireframeLinewidth = source.wireframeLinewidth;
		this.wireframeLinecap = source.wireframeLinecap;
		this.wireframeLinejoin = source.wireframeLinejoin;

		return this;

	}

}

MeshToonMaterial.prototype.isMeshToonMaterial = true;

/**
 * parameters = {
 *  opacity: <float>,
 *
 *  bumpMap: new THREE.Texture( <Image> ),
 *  bumpScale: <float>,
 *
 *  normalMap: new THREE.Texture( <Image> ),
 *  normalMapType: THREE.TangentSpaceNormalMap,
 *  normalScale: <Vector2>,
 *
 *  displacementMap: new THREE.Texture( <Image> ),
 *  displacementScale: <float>,
 *  displacementBias: <float>,
 *
 *  wireframe: <boolean>,
 *  wireframeLinewidth: <float>
 *
 *  flatShading: <bool>
 * }
 */

class MeshNormalMaterial extends Material {

	constructor( parameters ) {

		super();

		this.type = 'MeshNormalMaterial';

		this.bumpMap = null;
		this.bumpScale = 1;

		this.normalMap = null;
		this.normalMapType = TangentSpaceNormalMap;
		this.normalScale = new Vector2( 1, 1 );

		this.displacementMap = null;
		this.displacementScale = 1;
		this.displacementBias = 0;

		this.wireframe = false;
		this.wireframeLinewidth = 1;

		this.fog = false;

		this.flatShading = false;

		this.setValues( parameters );

	}

	copy( source ) {

		super.copy( source );

		this.bumpMap = source.bumpMap;
		this.bumpScale = source.bumpScale;

		this.normalMap = source.normalMap;
		this.normalMapType = source.normalMapType;
		this.normalScale.copy( source.normalScale );

		this.displacementMap = source.displacementMap;
		this.displacementScale = source.displacementScale;
		this.displacementBias = source.displacementBias;

		this.wireframe = source.wireframe;
		this.wireframeLinewidth = source.wireframeLinewidth;

		this.flatShading = source.flatShading;

		return this;

	}

}

MeshNormalMaterial.prototype.isMeshNormalMaterial = true;

/**
 * parameters = {
 *  color: <hex>,
 *  opacity: <float>,
 *
 *  map: new THREE.Texture( <Image> ),
 *
 *  lightMap: new THREE.Texture( <Image> ),
 *  lightMapIntensity: <float>
 *
 *  aoMap: new THREE.Texture( <Image> ),
 *  aoMapIntensity: <float>
 *
 *  emissive: <hex>,
 *  emissiveIntensity: <float>
 *  emissiveMap: new THREE.Texture( <Image> ),
 *
 *  specularMap: new THREE.Texture( <Image> ),
 *
 *  alphaMap: new THREE.Texture( <Image> ),
 *
 *  envMap: new THREE.CubeTexture( [posx, negx, posy, negy, posz, negz] ),
 *  combine: THREE.Multiply,
 *  reflectivity: <float>,
 *  refractionRatio: <float>,
 *
 *  wireframe: <boolean>,
 *  wireframeLinewidth: <float>,
 *
 * }
 */

class MeshLambertMaterial extends Material {

	constructor( parameters ) {

		super();

		this.type = 'MeshLambertMaterial';

		this.color = new Color( 0xffffff ); // diffuse

		this.map = null;

		this.lightMap = null;
		this.lightMapIntensity = 1.0;

		this.aoMap = null;
		this.aoMapIntensity = 1.0;

		this.emissive = new Color( 0x000000 );
		this.emissiveIntensity = 1.0;
		this.emissiveMap = null;

		this.specularMap = null;

		this.alphaMap = null;

		this.envMap = null;
		this.combine = MultiplyOperation;
		this.reflectivity = 1;
		this.refractionRatio = 0.98;

		this.wireframe = false;
		this.wireframeLinewidth = 1;
		this.wireframeLinecap = 'round';
		this.wireframeLinejoin = 'round';

		this.setValues( parameters );

	}

	copy( source ) {

		super.copy( source );

		this.color.copy( source.color );

		this.map = source.map;

		this.lightMap = source.lightMap;
		this.lightMapIntensity = source.lightMapIntensity;

		this.aoMap = source.aoMap;
		this.aoMapIntensity = source.aoMapIntensity;

		this.emissive.copy( source.emissive );
		this.emissiveMap = source.emissiveMap;
		this.emissiveIntensity = source.emissiveIntensity;

		this.specularMap = source.specularMap;

		this.alphaMap = source.alphaMap;

		this.envMap = source.envMap;
		this.combine = source.combine;
		this.reflectivity = source.reflectivity;
		this.refractionRatio = source.refractionRatio;

		this.wireframe = source.wireframe;
		this.wireframeLinewidth = source.wireframeLinewidth;
		this.wireframeLinecap = source.wireframeLinecap;
		this.wireframeLinejoin = source.wireframeLinejoin;

		return this;

	}

}

MeshLambertMaterial.prototype.isMeshLambertMaterial = true;

/**
 * parameters = {
 *  color: <hex>,
 *  opacity: <float>,
 *
 *  matcap: new THREE.Texture( <Image> ),
 *
 *  map: new THREE.Texture( <Image> ),
 *
 *  bumpMap: new THREE.Texture( <Image> ),
 *  bumpScale: <float>,
 *
 *  normalMap: new THREE.Texture( <Image> ),
 *  normalMapType: THREE.TangentSpaceNormalMap,
 *  normalScale: <Vector2>,
 *
 *  displacementMap: new THREE.Texture( <Image> ),
 *  displacementScale: <float>,
 *  displacementBias: <float>,
 *
 *  alphaMap: new THREE.Texture( <Image> ),
 *
 *  flatShading: <bool>
 * }
 */

class MeshMatcapMaterial extends Material {

	constructor( parameters ) {

		super();

		this.defines = { 'MATCAP': '' };

		this.type = 'MeshMatcapMaterial';

		this.color = new Color( 0xffffff ); // diffuse

		this.matcap = null;

		this.map = null;

		this.bumpMap = null;
		this.bumpScale = 1;

		this.normalMap = null;
		this.normalMapType = TangentSpaceNormalMap;
		this.normalScale = new Vector2( 1, 1 );

		this.displacementMap = null;
		this.displacementScale = 1;
		this.displacementBias = 0;

		this.alphaMap = null;

		this.flatShading = false;

		this.setValues( parameters );

	}


	copy( source ) {

		super.copy( source );

		this.defines = { 'MATCAP': '' };

		this.color.copy( source.color );

		this.matcap = source.matcap;

		this.map = source.map;

		this.bumpMap = source.bumpMap;
		this.bumpScale = source.bumpScale;

		this.normalMap = source.normalMap;
		this.normalMapType = source.normalMapType;
		this.normalScale.copy( source.normalScale );

		this.displacementMap = source.displacementMap;
		this.displacementScale = source.displacementScale;
		this.displacementBias = source.displacementBias;

		this.alphaMap = source.alphaMap;

		this.flatShading = source.flatShading;

		return this;

	}

}

MeshMatcapMaterial.prototype.isMeshMatcapMaterial = true;

/**
 * parameters = {
 *  color: <hex>,
 *  opacity: <float>,
 *
 *  linewidth: <float>,
 *
 *  scale: <float>,
 *  dashSize: <float>,
 *  gapSize: <float>
 * }
 */

class LineDashedMaterial extends LineBasicMaterial {

	constructor( parameters ) {

		super();

		this.type = 'LineDashedMaterial';

		this.scale = 1;
		this.dashSize = 3;
		this.gapSize = 1;

		this.setValues( parameters );

	}

	copy( source ) {

		super.copy( source );

		this.scale = source.scale;
		this.dashSize = source.dashSize;
		this.gapSize = source.gapSize;

		return this;

	}

}

LineDashedMaterial.prototype.isLineDashedMaterial = true;

const materialLib = {
	ShadowMaterial,
	SpriteMaterial,
	RawShaderMaterial,
	ShaderMaterial,
	PointsMaterial,
	MeshPhysicalMaterial,
	MeshStandardMaterial,
	MeshPhongMaterial,
	MeshToonMaterial,
	MeshNormalMaterial,
	MeshLambertMaterial,
	MeshDepthMaterial,
	MeshDistanceMaterial,
	MeshBasicMaterial,
	MeshMatcapMaterial,
	LineDashedMaterial,
	LineBasicMaterial,
	Material
};

Material.fromType = function ( type ) {

	return new materialLib[ type ]();

};

const AnimationUtils = {

	// same as Array.prototype.slice, but also works on typed arrays
	arraySlice: function ( array, from, to ) {

		if ( AnimationUtils.isTypedArray( array ) ) {

			// in ios9 array.subarray(from, undefined) will return empty array
			// but array.subarray(from) or array.subarray(from, len) is correct
			return new array.constructor( array.subarray( from, to !== undefined ? to : array.length ) );

		}

		return array.slice( from, to );

	},

	// converts an array to a specific type
	convertArray: function ( array, type, forceClone ) {

		if ( ! array || // let 'undefined' and 'null' pass
			! forceClone && array.constructor === type ) return array;

		if ( typeof type.BYTES_PER_ELEMENT === 'number' ) {

			return new type( array ); // create typed array

		}

		return Array.prototype.slice.call( array ); // create Array

	},

	isTypedArray: function ( object ) {

		return ArrayBuffer.isView( object ) &&
			! ( object instanceof DataView );

	},

	// returns an array by which times and values can be sorted
	getKeyframeOrder: function ( times ) {

		function compareTime( i, j ) {

			return times[ i ] - times[ j ];

		}

		const n = times.length;
		const result = new Array( n );
		for ( let i = 0; i !== n; ++ i ) result[ i ] = i;

		result.sort( compareTime );

		return result;

	},

	// uses the array previously returned by 'getKeyframeOrder' to sort data
	sortedArray: function ( values, stride, order ) {

		const nValues = values.length;
		const result = new values.constructor( nValues );

		for ( let i = 0, dstOffset = 0; dstOffset !== nValues; ++ i ) {

			const srcOffset = order[ i ] * stride;

			for ( let j = 0; j !== stride; ++ j ) {

				result[ dstOffset ++ ] = values[ srcOffset + j ];

			}

		}

		return result;

	},

	// function for parsing AOS keyframe formats
	flattenJSON: function ( jsonKeys, times, values, valuePropertyName ) {

		let i = 1, key = jsonKeys[ 0 ];

		while ( key !== undefined && key[ valuePropertyName ] === undefined ) {

			key = jsonKeys[ i ++ ];

		}

		if ( key === undefined ) return; // no data

		let value = key[ valuePropertyName ];
		if ( value === undefined ) return; // no data

		if ( Array.isArray( value ) ) {

			do {

				value = key[ valuePropertyName ];

				if ( value !== undefined ) {

					times.push( key.time );
					values.push.apply( values, value ); // push all elements

				}

				key = jsonKeys[ i ++ ];

			} while ( key !== undefined );

		} else if ( value.toArray !== undefined ) {

			// ...assume THREE.Math-ish

			do {

				value = key[ valuePropertyName ];

				if ( value !== undefined ) {

					times.push( key.time );
					value.toArray( values, values.length );

				}

				key = jsonKeys[ i ++ ];

			} while ( key !== undefined );

		} else {

			// otherwise push as-is

			do {

				value = key[ valuePropertyName ];

				if ( value !== undefined ) {

					times.push( key.time );
					values.push( value );

				}

				key = jsonKeys[ i ++ ];

			} while ( key !== undefined );

		}

	},

	subclip: function ( sourceClip, name, startFrame, endFrame, fps = 30 ) {

		const clip = sourceClip.clone();

		clip.name = name;

		const tracks = [];

		for ( let i = 0; i < clip.tracks.length; ++ i ) {

			const track = clip.tracks[ i ];
			const valueSize = track.getValueSize();

			const times = [];
			const values = [];

			for ( let j = 0; j < track.times.length; ++ j ) {

				const frame = track.times[ j ] * fps;

				if ( frame < startFrame || frame >= endFrame ) continue;

				times.push( track.times[ j ] );

				for ( let k = 0; k < valueSize; ++ k ) {

					values.push( track.values[ j * valueSize + k ] );

				}

			}

			if ( times.length === 0 ) continue;

			track.times = AnimationUtils.convertArray( times, track.times.constructor );
			track.values = AnimationUtils.convertArray( values, track.values.constructor );

			tracks.push( track );

		}

		clip.tracks = tracks;

		// find minimum .times value across all tracks in the trimmed clip

		let minStartTime = Infinity;

		for ( let i = 0; i < clip.tracks.length; ++ i ) {

			if ( minStartTime > clip.tracks[ i ].times[ 0 ] ) {

				minStartTime = clip.tracks[ i ].times[ 0 ];

			}

		}

		// shift all tracks such that clip begins at t=0

		for ( let i = 0; i < clip.tracks.length; ++ i ) {

			clip.tracks[ i ].shift( - 1 * minStartTime );

		}

		clip.resetDuration();

		return clip;

	},

	makeClipAdditive: function ( targetClip, referenceFrame = 0, referenceClip = targetClip, fps = 30 ) {

		if ( fps <= 0 ) fps = 30;

		const numTracks = referenceClip.tracks.length;
		const referenceTime = referenceFrame / fps;

		// Make each track's values relative to the values at the reference frame
		for ( let i = 0; i < numTracks; ++ i ) {

			const referenceTrack = referenceClip.tracks[ i ];
			const referenceTrackType = referenceTrack.ValueTypeName;

			// Skip this track if it's non-numeric
			if ( referenceTrackType === 'bool' || referenceTrackType === 'string' ) continue;

			// Find the track in the target clip whose name and type matches the reference track
			const targetTrack = targetClip.tracks.find( function ( track ) {

				return track.name === referenceTrack.name
					&& track.ValueTypeName === referenceTrackType;

			} );

			if ( targetTrack === undefined ) continue;

			let referenceOffset = 0;
			const referenceValueSize = referenceTrack.getValueSize();

			if ( referenceTrack.createInterpolant.isInterpolantFactoryMethodGLTFCubicSpline ) {

				referenceOffset = referenceValueSize / 3;

			}

			let targetOffset = 0;
			const targetValueSize = targetTrack.getValueSize();

			if ( targetTrack.createInterpolant.isInterpolantFactoryMethodGLTFCubicSpline ) {

				targetOffset = targetValueSize / 3;

			}

			const lastIndex = referenceTrack.times.length - 1;
			let referenceValue;

			// Find the value to subtract out of the track
			if ( referenceTime <= referenceTrack.times[ 0 ] ) {

				// Reference frame is earlier than the first keyframe, so just use the first keyframe
				const startIndex = referenceOffset;
				const endIndex = referenceValueSize - referenceOffset;
				referenceValue = AnimationUtils.arraySlice( referenceTrack.values, startIndex, endIndex );

			} else if ( referenceTime >= referenceTrack.times[ lastIndex ] ) {

				// Reference frame is after the last keyframe, so just use the last keyframe
				const startIndex = lastIndex * referenceValueSize + referenceOffset;
				const endIndex = startIndex + referenceValueSize - referenceOffset;
				referenceValue = AnimationUtils.arraySlice( referenceTrack.values, startIndex, endIndex );

			} else {

				// Interpolate to the reference value
				const interpolant = referenceTrack.createInterpolant();
				const startIndex = referenceOffset;
				const endIndex = referenceValueSize - referenceOffset;
				interpolant.evaluate( referenceTime );
				referenceValue = AnimationUtils.arraySlice( interpolant.resultBuffer, startIndex, endIndex );

			}

			// Conjugate the quaternion
			if ( referenceTrackType === 'quaternion' ) {

				const referenceQuat = new Quaternion().fromArray( referenceValue ).normalize().conjugate();
				referenceQuat.toArray( referenceValue );

			}

			// Subtract the reference value from all of the track values

			const numTimes = targetTrack.times.length;
			for ( let j = 0; j < numTimes; ++ j ) {

				const valueStart = j * targetValueSize + targetOffset;

				if ( referenceTrackType === 'quaternion' ) {

					// Multiply the conjugate for quaternion track types
					Quaternion.multiplyQuaternionsFlat(
						targetTrack.values,
						valueStart,
						referenceValue,
						0,
						targetTrack.values,
						valueStart
					);

				} else {

					const valueEnd = targetValueSize - targetOffset * 2;

					// Subtract each value for all other numeric track types
					for ( let k = 0; k < valueEnd; ++ k ) {

						targetTrack.values[ valueStart + k ] -= referenceValue[ k ];

					}

				}

			}

		}

		targetClip.blendMode = AdditiveAnimationBlendMode;

		return targetClip;

	}

};

/**
 * Abstract base class of interpolants over parametric samples.
 *
 * The parameter domain is one dimensional, typically the time or a path
 * along a curve defined by the data.
 *
 * The sample values can have any dimensionality and derived classes may
 * apply special interpretations to the data.
 *
 * This class provides the interval seek in a Template Method, deferring
 * the actual interpolation to derived classes.
 *
 * Time complexity is O(1) for linear access crossing at most two points
 * and O(log N) for random access, where N is the number of positions.
 *
 * References:
 *
 * 		http://www.oodesign.com/template-method-pattern.html
 *
 */

class Interpolant {

	constructor( parameterPositions, sampleValues, sampleSize, resultBuffer ) {

		this.parameterPositions = parameterPositions;
		this._cachedIndex = 0;

		this.resultBuffer = resultBuffer !== undefined ?
			resultBuffer : new sampleValues.constructor( sampleSize );
		this.sampleValues = sampleValues;
		this.valueSize = sampleSize;

		this.settings = null;
		this.DefaultSettings_ = {};

	}

	evaluate( t ) {

		const pp = this.parameterPositions;
		let i1 = this._cachedIndex,
			t1 = pp[ i1 ],
			t0 = pp[ i1 - 1 ];

		validate_interval: {

			seek: {

				let right;

				linear_scan: {

					//- See http://jsperf.com/comparison-to-undefined/3
					//- slower code:
					//-
					//- 				if ( t >= t1 || t1 === undefined ) {
					forward_scan: if ( ! ( t < t1 ) ) {

						for ( let giveUpAt = i1 + 2; ; ) {

							if ( t1 === undefined ) {

								if ( t < t0 ) break forward_scan;

								// after end

								i1 = pp.length;
								this._cachedIndex = i1;
								return this.afterEnd_( i1 - 1, t, t0 );

							}

							if ( i1 === giveUpAt ) break; // this loop

							t0 = t1;
							t1 = pp[ ++ i1 ];

							if ( t < t1 ) {

								// we have arrived at the sought interval
								break seek;

							}

						}

						// prepare binary search on the right side of the index
						right = pp.length;
						break linear_scan;

					}

					//- slower code:
					//-					if ( t < t0 || t0 === undefined ) {
					if ( ! ( t >= t0 ) ) {

						// looping?

						const t1global = pp[ 1 ];

						if ( t < t1global ) {

							i1 = 2; // + 1, using the scan for the details
							t0 = t1global;

						}

						// linear reverse scan

						for ( let giveUpAt = i1 - 2; ; ) {

							if ( t0 === undefined ) {

								// before start

								this._cachedIndex = 0;
								return this.beforeStart_( 0, t, t1 );

							}

							if ( i1 === giveUpAt ) break; // this loop

							t1 = t0;
							t0 = pp[ -- i1 - 1 ];

							if ( t >= t0 ) {

								// we have arrived at the sought interval
								break seek;

							}

						}

						// prepare binary search on the left side of the index
						right = i1;
						i1 = 0;
						break linear_scan;

					}

					// the interval is valid

					break validate_interval;

				} // linear scan

				// binary search

				while ( i1 < right ) {

					const mid = ( i1 + right ) >>> 1;

					if ( t < pp[ mid ] ) {

						right = mid;

					} else {

						i1 = mid + 1;

					}

				}

				t1 = pp[ i1 ];
				t0 = pp[ i1 - 1 ];

				// check boundary cases, again

				if ( t0 === undefined ) {

					this._cachedIndex = 0;
					return this.beforeStart_( 0, t, t1 );

				}

				if ( t1 === undefined ) {

					i1 = pp.length;
					this._cachedIndex = i1;
					return this.afterEnd_( i1 - 1, t0, t );

				}

			} // seek

			this._cachedIndex = i1;

			this.intervalChanged_( i1, t0, t1 );

		} // validate_interval

		return this.interpolate_( i1, t0, t, t1 );

	}

	getSettings_() {

		return this.settings || this.DefaultSettings_;

	}

	copySampleValue_( index ) {

		// copies a sample value to the result buffer

		const result = this.resultBuffer,
			values = this.sampleValues,
			stride = this.valueSize,
			offset = index * stride;

		for ( let i = 0; i !== stride; ++ i ) {

			result[ i ] = values[ offset + i ];

		}

		return result;

	}

	// Template methods for derived classes:

	interpolate_( /* i1, t0, t, t1 */ ) {

		throw new Error( 'call to abstract method' );
		// implementations shall return this.resultBuffer

	}

	intervalChanged_( /* i1, t0, t1 */ ) {

		// empty

	}

}

// ALIAS DEFINITIONS

Interpolant.prototype.beforeStart_ = Interpolant.prototype.copySampleValue_;
Interpolant.prototype.afterEnd_ = Interpolant.prototype.copySampleValue_;

/**
 * Fast and simple cubic spline interpolant.
 *
 * It was derived from a Hermitian construction setting the first derivative
 * at each sample position to the linear slope between neighboring positions
 * over their parameter interval.
 */

class CubicInterpolant extends Interpolant {

	constructor( parameterPositions, sampleValues, sampleSize, resultBuffer ) {

		super( parameterPositions, sampleValues, sampleSize, resultBuffer );

		this._weightPrev = - 0;
		this._offsetPrev = - 0;
		this._weightNext = - 0;
		this._offsetNext = - 0;

		this.DefaultSettings_ = {

			endingStart: ZeroCurvatureEnding,
			endingEnd: ZeroCurvatureEnding

		};

	}

	intervalChanged_( i1, t0, t1 ) {

		const pp = this.parameterPositions;
		let iPrev = i1 - 2,
			iNext = i1 + 1,

			tPrev = pp[ iPrev ],
			tNext = pp[ iNext ];

		if ( tPrev === undefined ) {

			switch ( this.getSettings_().endingStart ) {

				case ZeroSlopeEnding:

					// f'(t0) = 0
					iPrev = i1;
					tPrev = 2 * t0 - t1;

					break;

				case WrapAroundEnding:

					// use the other end of the curve
					iPrev = pp.length - 2;
					tPrev = t0 + pp[ iPrev ] - pp[ iPrev + 1 ];

					break;

				default: // ZeroCurvatureEnding

					// f''(t0) = 0 a.k.a. Natural Spline
					iPrev = i1;
					tPrev = t1;

			}

		}

		if ( tNext === undefined ) {

			switch ( this.getSettings_().endingEnd ) {

				case ZeroSlopeEnding:

					// f'(tN) = 0
					iNext = i1;
					tNext = 2 * t1 - t0;

					break;

				case WrapAroundEnding:

					// use the other end of the curve
					iNext = 1;
					tNext = t1 + pp[ 1 ] - pp[ 0 ];

					break;

				default: // ZeroCurvatureEnding

					// f''(tN) = 0, a.k.a. Natural Spline
					iNext = i1 - 1;
					tNext = t0;

			}

		}

		const halfDt = ( t1 - t0 ) * 0.5,
			stride = this.valueSize;

		this._weightPrev = halfDt / ( t0 - tPrev );
		this._weightNext = halfDt / ( tNext - t1 );
		this._offsetPrev = iPrev * stride;
		this._offsetNext = iNext * stride;

	}

	interpolate_( i1, t0, t, t1 ) {

		const result = this.resultBuffer,
			values = this.sampleValues,
			stride = this.valueSize,

			o1 = i1 * stride,		o0 = o1 - stride,
			oP = this._offsetPrev, 	oN = this._offsetNext,
			wP = this._weightPrev,	wN = this._weightNext,

			p = ( t - t0 ) / ( t1 - t0 ),
			pp = p * p,
			ppp = pp * p;

		// evaluate polynomials

		const sP = - wP * ppp + 2 * wP * pp - wP * p;
		const s0 = ( 1 + wP ) * ppp + ( - 1.5 - 2 * wP ) * pp + ( - 0.5 + wP ) * p + 1;
		const s1 = ( - 1 - wN ) * ppp + ( 1.5 + wN ) * pp + 0.5 * p;
		const sN = wN * ppp - wN * pp;

		// combine data linearly

		for ( let i = 0; i !== stride; ++ i ) {

			result[ i ] =
					sP * values[ oP + i ] +
					s0 * values[ o0 + i ] +
					s1 * values[ o1 + i ] +
					sN * values[ oN + i ];

		}

		return result;

	}

}

class LinearInterpolant extends Interpolant {

	constructor( parameterPositions, sampleValues, sampleSize, resultBuffer ) {

		super( parameterPositions, sampleValues, sampleSize, resultBuffer );

	}

	interpolate_( i1, t0, t, t1 ) {

		const result = this.resultBuffer,
			values = this.sampleValues,
			stride = this.valueSize,

			offset1 = i1 * stride,
			offset0 = offset1 - stride,

			weight1 = ( t - t0 ) / ( t1 - t0 ),
			weight0 = 1 - weight1;

		for ( let i = 0; i !== stride; ++ i ) {

			result[ i ] =
					values[ offset0 + i ] * weight0 +
					values[ offset1 + i ] * weight1;

		}

		return result;

	}

}

/**
 *
 * Interpolant that evaluates to the sample value at the position preceeding
 * the parameter.
 */

class DiscreteInterpolant extends Interpolant {

	constructor( parameterPositions, sampleValues, sampleSize, resultBuffer ) {

		super( parameterPositions, sampleValues, sampleSize, resultBuffer );

	}

	interpolate_( i1 /*, t0, t, t1 */ ) {

		return this.copySampleValue_( i1 - 1 );

	}

}

class KeyframeTrack {

	constructor( name, times, values, interpolation ) {

		if ( name === undefined ) throw new Error( 'THREE.KeyframeTrack: track name is undefined' );
		if ( times === undefined || times.length === 0 ) throw new Error( 'THREE.KeyframeTrack: no keyframes in track named ' + name );

		this.name = name;

		this.times = AnimationUtils.convertArray( times, this.TimeBufferType );
		this.values = AnimationUtils.convertArray( values, this.ValueBufferType );

		this.setInterpolation( interpolation || this.DefaultInterpolation );

	}

	// Serialization (in static context, because of constructor invocation
	// and automatic invocation of .toJSON):

	static toJSON( track ) {

		const trackType = track.constructor;

		let json;

		// derived classes can define a static toJSON method
		if ( trackType.toJSON !== this.toJSON ) {

			json = trackType.toJSON( track );

		} else {

			// by default, we assume the data can be serialized as-is
			json = {

				'name': track.name,
				'times': AnimationUtils.convertArray( track.times, Array ),
				'values': AnimationUtils.convertArray( track.values, Array )

			};

			const interpolation = track.getInterpolation();

			if ( interpolation !== track.DefaultInterpolation ) {

				json.interpolation = interpolation;

			}

		}

		json.type = track.ValueTypeName; // mandatory

		return json;

	}

	InterpolantFactoryMethodDiscrete( result ) {

		return new DiscreteInterpolant( this.times, this.values, this.getValueSize(), result );

	}

	InterpolantFactoryMethodLinear( result ) {

		return new LinearInterpolant( this.times, this.values, this.getValueSize(), result );

	}

	InterpolantFactoryMethodSmooth( result ) {

		return new CubicInterpolant( this.times, this.values, this.getValueSize(), result );

	}

	setInterpolation( interpolation ) {

		let factoryMethod;

		switch ( interpolation ) {

			case InterpolateDiscrete:

				factoryMethod = this.InterpolantFactoryMethodDiscrete;

				break;

			case InterpolateLinear:

				factoryMethod = this.InterpolantFactoryMethodLinear;

				break;

			case InterpolateSmooth:

				factoryMethod = this.InterpolantFactoryMethodSmooth;

				break;

		}

		if ( factoryMethod === undefined ) {

			const message = 'unsupported interpolation for ' +
				this.ValueTypeName + ' keyframe track named ' + this.name;

			if ( this.createInterpolant === undefined ) {

				// fall back to default, unless the default itself is messed up
				if ( interpolation !== this.DefaultInterpolation ) {

					this.setInterpolation( this.DefaultInterpolation );

				} else {

					throw new Error( message ); // fatal, in this case

				}

			}

			console.warn( 'THREE.KeyframeTrack:', message );
			return this;

		}

		this.createInterpolant = factoryMethod;

		return this;

	}

	getInterpolation() {

		switch ( this.createInterpolant ) {

			case this.InterpolantFactoryMethodDiscrete:

				return InterpolateDiscrete;

			case this.InterpolantFactoryMethodLinear:

				return InterpolateLinear;

			case this.InterpolantFactoryMethodSmooth:

				return InterpolateSmooth;

		}

	}

	getValueSize() {

		return this.values.length / this.times.length;

	}

	// move all keyframes either forwards or backwards in time
	shift( timeOffset ) {

		if ( timeOffset !== 0.0 ) {

			const times = this.times;

			for ( let i = 0, n = times.length; i !== n; ++ i ) {

				times[ i ] += timeOffset;

			}

		}

		return this;

	}

	// scale all keyframe times by a factor (useful for frame <-> seconds conversions)
	scale( timeScale ) {

		if ( timeScale !== 1.0 ) {

			const times = this.times;

			for ( let i = 0, n = times.length; i !== n; ++ i ) {

				times[ i ] *= timeScale;

			}

		}

		return this;

	}

	// removes keyframes before and after animation without changing any values within the range [startTime, endTime].
	// IMPORTANT: We do not shift around keys to the start of the track time, because for interpolated keys this will change their values
	trim( startTime, endTime ) {

		const times = this.times,
			nKeys = times.length;

		let from = 0,
			to = nKeys - 1;

		while ( from !== nKeys && times[ from ] < startTime ) {

			++ from;

		}

		while ( to !== - 1 && times[ to ] > endTime ) {

			-- to;

		}

		++ to; // inclusive -> exclusive bound

		if ( from !== 0 || to !== nKeys ) {

			// empty tracks are forbidden, so keep at least one keyframe
			if ( from >= to ) {

				to = Math.max( to, 1 );
				from = to - 1;

			}

			const stride = this.getValueSize();
			this.times = AnimationUtils.arraySlice( times, from, to );
			this.values = AnimationUtils.arraySlice( this.values, from * stride, to * stride );

		}

		return this;

	}

	// ensure we do not get a GarbageInGarbageOut situation, make sure tracks are at least minimally viable
	validate() {

		let valid = true;

		const valueSize = this.getValueSize();
		if ( valueSize - Math.floor( valueSize ) !== 0 ) {

			console.error( 'THREE.KeyframeTrack: Invalid value size in track.', this );
			valid = false;

		}

		const times = this.times,
			values = this.values,

			nKeys = times.length;

		if ( nKeys === 0 ) {

			console.error( 'THREE.KeyframeTrack: Track is empty.', this );
			valid = false;

		}

		let prevTime = null;

		for ( let i = 0; i !== nKeys; i ++ ) {

			const currTime = times[ i ];

			if ( typeof currTime === 'number' && isNaN( currTime ) ) {

				console.error( 'THREE.KeyframeTrack: Time is not a valid number.', this, i, currTime );
				valid = false;
				break;

			}

			if ( prevTime !== null && prevTime > currTime ) {

				console.error( 'THREE.KeyframeTrack: Out of order keys.', this, i, currTime, prevTime );
				valid = false;
				break;

			}

			prevTime = currTime;

		}

		if ( values !== undefined ) {

			if ( AnimationUtils.isTypedArray( values ) ) {

				for ( let i = 0, n = values.length; i !== n; ++ i ) {

					const value = values[ i ];

					if ( isNaN( value ) ) {

						console.error( 'THREE.KeyframeTrack: Value is not a valid number.', this, i, value );
						valid = false;
						break;

					}

				}

			}

		}

		return valid;

	}

	// removes equivalent sequential keys as common in morph target sequences
	// (0,0,0,0,1,1,1,0,0,0,0,0,0,0) --> (0,0,1,1,0,0)
	optimize() {

		// times or values may be shared with other tracks, so overwriting is unsafe
		const times = AnimationUtils.arraySlice( this.times ),
			values = AnimationUtils.arraySlice( this.values ),
			stride = this.getValueSize(),

			smoothInterpolation = this.getInterpolation() === InterpolateSmooth,

			lastIndex = times.length - 1;

		let writeIndex = 1;

		for ( let i = 1; i < lastIndex; ++ i ) {

			let keep = false;

			const time = times[ i ];
			const timeNext = times[ i + 1 ];

			// remove adjacent keyframes scheduled at the same time

			if ( time !== timeNext && ( i !== 1 || time !== times[ 0 ] ) ) {

				if ( ! smoothInterpolation ) {

					// remove unnecessary keyframes same as their neighbors

					const offset = i * stride,
						offsetP = offset - stride,
						offsetN = offset + stride;

					for ( let j = 0; j !== stride; ++ j ) {

						const value = values[ offset + j ];

						if ( value !== values[ offsetP + j ] ||
							value !== values[ offsetN + j ] ) {

							keep = true;
							break;

						}

					}

				} else {

					keep = true;

				}

			}

			// in-place compaction

			if ( keep ) {

				if ( i !== writeIndex ) {

					times[ writeIndex ] = times[ i ];

					const readOffset = i * stride,
						writeOffset = writeIndex * stride;

					for ( let j = 0; j !== stride; ++ j ) {

						values[ writeOffset + j ] = values[ readOffset + j ];

					}

				}

				++ writeIndex;

			}

		}

		// flush last keyframe (compaction looks ahead)

		if ( lastIndex > 0 ) {

			times[ writeIndex ] = times[ lastIndex ];

			for ( let readOffset = lastIndex * stride, writeOffset = writeIndex * stride, j = 0; j !== stride; ++ j ) {

				values[ writeOffset + j ] = values[ readOffset + j ];

			}

			++ writeIndex;

		}

		if ( writeIndex !== times.length ) {

			this.times = AnimationUtils.arraySlice( times, 0, writeIndex );
			this.values = AnimationUtils.arraySlice( values, 0, writeIndex * stride );

		} else {

			this.times = times;
			this.values = values;

		}

		return this;

	}

	clone() {

		const times = AnimationUtils.arraySlice( this.times, 0 );
		const values = AnimationUtils.arraySlice( this.values, 0 );

		const TypedKeyframeTrack = this.constructor;
		const track = new TypedKeyframeTrack( this.name, times, values );

		// Interpolant argument to constructor is not saved, so copy the factory method directly.
		track.createInterpolant = this.createInterpolant;

		return track;

	}

}

KeyframeTrack.prototype.TimeBufferType = Float32Array;
KeyframeTrack.prototype.ValueBufferType = Float32Array;
KeyframeTrack.prototype.DefaultInterpolation = InterpolateLinear;

/**
 * A Track of Boolean keyframe values.
 */
class BooleanKeyframeTrack extends KeyframeTrack {}

BooleanKeyframeTrack.prototype.ValueTypeName = 'bool';
BooleanKeyframeTrack.prototype.ValueBufferType = Array;
BooleanKeyframeTrack.prototype.DefaultInterpolation = InterpolateDiscrete;
BooleanKeyframeTrack.prototype.InterpolantFactoryMethodLinear = undefined;
BooleanKeyframeTrack.prototype.InterpolantFactoryMethodSmooth = undefined;

/**
 * A Track of keyframe values that represent color.
 */
class ColorKeyframeTrack extends KeyframeTrack {}

ColorKeyframeTrack.prototype.ValueTypeName = 'color';

/**
 * A Track of numeric keyframe values.
 */
class NumberKeyframeTrack extends KeyframeTrack {}

NumberKeyframeTrack.prototype.ValueTypeName = 'number';

/**
 * Spherical linear unit quaternion interpolant.
 */

class QuaternionLinearInterpolant extends Interpolant {

	constructor( parameterPositions, sampleValues, sampleSize, resultBuffer ) {

		super( parameterPositions, sampleValues, sampleSize, resultBuffer );

	}

	interpolate_( i1, t0, t, t1 ) {

		const result = this.resultBuffer,
			values = this.sampleValues,
			stride = this.valueSize,

			alpha = ( t - t0 ) / ( t1 - t0 );

		let offset = i1 * stride;

		for ( let end = offset + stride; offset !== end; offset += 4 ) {

			Quaternion.slerpFlat( result, 0, values, offset - stride, values, offset, alpha );

		}

		return result;

	}

}

/**
 * A Track of quaternion keyframe values.
 */
class QuaternionKeyframeTrack extends KeyframeTrack {

	InterpolantFactoryMethodLinear( result ) {

		return new QuaternionLinearInterpolant( this.times, this.values, this.getValueSize(), result );

	}

}

QuaternionKeyframeTrack.prototype.ValueTypeName = 'quaternion';
// ValueBufferType is inherited
QuaternionKeyframeTrack.prototype.DefaultInterpolation = InterpolateLinear;
QuaternionKeyframeTrack.prototype.InterpolantFactoryMethodSmooth = undefined;

/**
 * A Track that interpolates Strings
 */
class StringKeyframeTrack extends KeyframeTrack {}

StringKeyframeTrack.prototype.ValueTypeName = 'string';
StringKeyframeTrack.prototype.ValueBufferType = Array;
StringKeyframeTrack.prototype.DefaultInterpolation = InterpolateDiscrete;
StringKeyframeTrack.prototype.InterpolantFactoryMethodLinear = undefined;
StringKeyframeTrack.prototype.InterpolantFactoryMethodSmooth = undefined;

/**
 * A Track of vectored keyframe values.
 */
class VectorKeyframeTrack extends KeyframeTrack {}

VectorKeyframeTrack.prototype.ValueTypeName = 'vector';

class AnimationClip {

	constructor( name, duration = - 1, tracks, blendMode = NormalAnimationBlendMode ) {

		this.name = name;
		this.tracks = tracks;
		this.duration = duration;
		this.blendMode = blendMode;

		this.uuid = generateUUID();

		// this means it should figure out its duration by scanning the tracks
		if ( this.duration < 0 ) {

			this.resetDuration();

		}

	}


	static parse( json ) {

		const tracks = [],
			jsonTracks = json.tracks,
			frameTime = 1.0 / ( json.fps || 1.0 );

		for ( let i = 0, n = jsonTracks.length; i !== n; ++ i ) {

			tracks.push( parseKeyframeTrack( jsonTracks[ i ] ).scale( frameTime ) );

		}

		const clip = new this( json.name, json.duration, tracks, json.blendMode );
		clip.uuid = json.uuid;

		return clip;

	}

	static toJSON( clip ) {

		const tracks = [],
			clipTracks = clip.tracks;

		const json = {

			'name': clip.name,
			'duration': clip.duration,
			'tracks': tracks,
			'uuid': clip.uuid,
			'blendMode': clip.blendMode

		};

		for ( let i = 0, n = clipTracks.length; i !== n; ++ i ) {

			tracks.push( KeyframeTrack.toJSON( clipTracks[ i ] ) );

		}

		return json;

	}

	static CreateFromMorphTargetSequence( name, morphTargetSequence, fps, noLoop ) {

		const numMorphTargets = morphTargetSequence.length;
		const tracks = [];

		for ( let i = 0; i < numMorphTargets; i ++ ) {

			let times = [];
			let values = [];

			times.push(
				( i + numMorphTargets - 1 ) % numMorphTargets,
				i,
				( i + 1 ) % numMorphTargets );

			values.push( 0, 1, 0 );

			const order = AnimationUtils.getKeyframeOrder( times );
			times = AnimationUtils.sortedArray( times, 1, order );
			values = AnimationUtils.sortedArray( values, 1, order );

			// if there is a key at the first frame, duplicate it as the
			// last frame as well for perfect loop.
			if ( ! noLoop && times[ 0 ] === 0 ) {

				times.push( numMorphTargets );
				values.push( values[ 0 ] );

			}

			tracks.push(
				new NumberKeyframeTrack(
					'.morphTargetInfluences[' + morphTargetSequence[ i ].name + ']',
					times, values
				).scale( 1.0 / fps ) );

		}

		return new this( name, - 1, tracks );

	}

	static findByName( objectOrClipArray, name ) {

		let clipArray = objectOrClipArray;

		if ( ! Array.isArray( objectOrClipArray ) ) {

			const o = objectOrClipArray;
			clipArray = o.geometry && o.geometry.animations || o.animations;

		}

		for ( let i = 0; i < clipArray.length; i ++ ) {

			if ( clipArray[ i ].name === name ) {

				return clipArray[ i ];

			}

		}

		return null;

	}

	static CreateClipsFromMorphTargetSequences( morphTargets, fps, noLoop ) {

		const animationToMorphTargets = {};

		// tested with https://regex101.com/ on trick sequences
		// such flamingo_flyA_003, flamingo_run1_003, crdeath0059
		const pattern = /^([\w-]*?)([\d]+)$/;

		// sort morph target names into animation groups based
		// patterns like Walk_001, Walk_002, Run_001, Run_002
		for ( let i = 0, il = morphTargets.length; i < il; i ++ ) {

			const morphTarget = morphTargets[ i ];
			const parts = morphTarget.name.match( pattern );

			if ( parts && parts.length > 1 ) {

				const name = parts[ 1 ];

				let animationMorphTargets = animationToMorphTargets[ name ];

				if ( ! animationMorphTargets ) {

					animationToMorphTargets[ name ] = animationMorphTargets = [];

				}

				animationMorphTargets.push( morphTarget );

			}

		}

		const clips = [];

		for ( const name in animationToMorphTargets ) {

			clips.push( this.CreateFromMorphTargetSequence( name, animationToMorphTargets[ name ], fps, noLoop ) );

		}

		return clips;

	}

	// parse the animation.hierarchy format
	static parseAnimation( animation, bones ) {

		if ( ! animation ) {

			console.error( 'THREE.AnimationClip: No animation in JSONLoader data.' );
			return null;

		}

		const addNonemptyTrack = function ( trackType, trackName, animationKeys, propertyName, destTracks ) {

			// only return track if there are actually keys.
			if ( animationKeys.length !== 0 ) {

				const times = [];
				const values = [];

				AnimationUtils.flattenJSON( animationKeys, times, values, propertyName );

				// empty keys are filtered out, so check again
				if ( times.length !== 0 ) {

					destTracks.push( new trackType( trackName, times, values ) );

				}

			}

		};

		const tracks = [];

		const clipName = animation.name || 'default';
		const fps = animation.fps || 30;
		const blendMode = animation.blendMode;

		// automatic length determination in AnimationClip.
		let duration = animation.length || - 1;

		const hierarchyTracks = animation.hierarchy || [];

		for ( let h = 0; h < hierarchyTracks.length; h ++ ) {

			const animationKeys = hierarchyTracks[ h ].keys;

			// skip empty tracks
			if ( ! animationKeys || animationKeys.length === 0 ) continue;

			// process morph targets
			if ( animationKeys[ 0 ].morphTargets ) {

				// figure out all morph targets used in this track
				const morphTargetNames = {};

				let k;

				for ( k = 0; k < animationKeys.length; k ++ ) {

					if ( animationKeys[ k ].morphTargets ) {

						for ( let m = 0; m < animationKeys[ k ].morphTargets.length; m ++ ) {

							morphTargetNames[ animationKeys[ k ].morphTargets[ m ] ] = - 1;

						}

					}

				}

				// create a track for each morph target with all zero
				// morphTargetInfluences except for the keys in which
				// the morphTarget is named.
				for ( const morphTargetName in morphTargetNames ) {

					const times = [];
					const values = [];

					for ( let m = 0; m !== animationKeys[ k ].morphTargets.length; ++ m ) {

						const animationKey = animationKeys[ k ];

						times.push( animationKey.time );
						values.push( ( animationKey.morphTarget === morphTargetName ) ? 1 : 0 );

					}

					tracks.push( new NumberKeyframeTrack( '.morphTargetInfluence[' + morphTargetName + ']', times, values ) );

				}

				duration = morphTargetNames.length * fps;

			} else {

				// ...assume skeletal animation

				const boneName = '.bones[' + bones[ h ].name + ']';

				addNonemptyTrack(
					VectorKeyframeTrack, boneName + '.position',
					animationKeys, 'pos', tracks );

				addNonemptyTrack(
					QuaternionKeyframeTrack, boneName + '.quaternion',
					animationKeys, 'rot', tracks );

				addNonemptyTrack(
					VectorKeyframeTrack, boneName + '.scale',
					animationKeys, 'scl', tracks );

			}

		}

		if ( tracks.length === 0 ) {

			return null;

		}

		const clip = new this( clipName, duration, tracks, blendMode );

		return clip;

	}

	resetDuration() {

		const tracks = this.tracks;
		let duration = 0;

		for ( let i = 0, n = tracks.length; i !== n; ++ i ) {

			const track = this.tracks[ i ];

			duration = Math.max( duration, track.times[ track.times.length - 1 ] );

		}

		this.duration = duration;

		return this;

	}

	trim() {

		for ( let i = 0; i < this.tracks.length; i ++ ) {

			this.tracks[ i ].trim( 0, this.duration );

		}

		return this;

	}

	validate() {

		let valid = true;

		for ( let i = 0; i < this.tracks.length; i ++ ) {

			valid = valid && this.tracks[ i ].validate();

		}

		return valid;

	}

	optimize() {

		for ( let i = 0; i < this.tracks.length; i ++ ) {

			this.tracks[ i ].optimize();

		}

		return this;

	}

	clone() {

		const tracks = [];

		for ( let i = 0; i < this.tracks.length; i ++ ) {

			tracks.push( this.tracks[ i ].clone() );

		}

		return new this.constructor( this.name, this.duration, tracks, this.blendMode );

	}

	toJSON() {

		return this.constructor.toJSON( this );

	}

}

function getTrackTypeForValueTypeName( typeName ) {

	switch ( typeName.toLowerCase() ) {

		case 'scalar':
		case 'double':
		case 'float':
		case 'number':
		case 'integer':

			return NumberKeyframeTrack;

		case 'vector':
		case 'vector2':
		case 'vector3':
		case 'vector4':

			return VectorKeyframeTrack;

		case 'color':

			return ColorKeyframeTrack;

		case 'quaternion':

			return QuaternionKeyframeTrack;

		case 'bool':
		case 'boolean':

			return BooleanKeyframeTrack;

		case 'string':

			return StringKeyframeTrack;

	}

	throw new Error( 'THREE.KeyframeTrack: Unsupported typeName: ' + typeName );

}

function parseKeyframeTrack( json ) {

	if ( json.type === undefined ) {

		throw new Error( 'THREE.KeyframeTrack: track type undefined, can not parse' );

	}

	const trackType = getTrackTypeForValueTypeName( json.type );

	if ( json.times === undefined ) {

		const times = [], values = [];

		AnimationUtils.flattenJSON( json.keys, times, values, 'value' );

		json.times = times;
		json.values = values;

	}

	// derived classes can define a static parse method
	if ( trackType.parse !== undefined ) {

		return trackType.parse( json );

	} else {

		// by default, we assume a constructor compatible with the base
		return new trackType( json.name, json.times, json.values, json.interpolation );

	}

}

const Cache = {

	enabled: false,

	files: {},

	add: function ( key, file ) {

		if ( this.enabled === false ) return;

		// console.log( 'THREE.Cache', 'Adding key:', key );

		this.files[ key ] = file;

	},

	get: function ( key ) {

		if ( this.enabled === false ) return;

		// console.log( 'THREE.Cache', 'Checking key:', key );

		return this.files[ key ];

	},

	remove: function ( key ) {

		delete this.files[ key ];

	},

	clear: function () {

		this.files = {};

	}

};

class LoadingManager {

	constructor( onLoad, onProgress, onError ) {

		const scope = this;

		let isLoading = false;
		let itemsLoaded = 0;
		let itemsTotal = 0;
		let urlModifier = undefined;
		const handlers = [];

		// Refer to #5689 for the reason why we don't set .onStart
		// in the constructor

		this.onStart = undefined;
		this.onLoad = onLoad;
		this.onProgress = onProgress;
		this.onError = onError;

		this.itemStart = function ( url ) {

			itemsTotal ++;

			if ( isLoading === false ) {

				if ( scope.onStart !== undefined ) {

					scope.onStart( url, itemsLoaded, itemsTotal );

				}

			}

			isLoading = true;

		};

		this.itemEnd = function ( url ) {

			itemsLoaded ++;

			if ( scope.onProgress !== undefined ) {

				scope.onProgress( url, itemsLoaded, itemsTotal );

			}

			if ( itemsLoaded === itemsTotal ) {

				isLoading = false;

				if ( scope.onLoad !== undefined ) {

					scope.onLoad();

				}

			}

		};

		this.itemError = function ( url ) {

			if ( scope.onError !== undefined ) {

				scope.onError( url );

			}

		};

		this.resolveURL = function ( url ) {

			if ( urlModifier ) {

				return urlModifier( url );

			}

			return url;

		};

		this.setURLModifier = function ( transform ) {

			urlModifier = transform;

			return this;

		};

		this.addHandler = function ( regex, loader ) {

			handlers.push( regex, loader );

			return this;

		};

		this.removeHandler = function ( regex ) {

			const index = handlers.indexOf( regex );

			if ( index !== - 1 ) {

				handlers.splice( index, 2 );

			}

			return this;

		};

		this.getHandler = function ( file ) {

			for ( let i = 0, l = handlers.length; i < l; i += 2 ) {

				const regex = handlers[ i ];
				const loader = handlers[ i + 1 ];

				if ( regex.global ) regex.lastIndex = 0; // see #17920

				if ( regex.test( file ) ) {

					return loader;

				}

			}

			return null;

		};

	}

}

const DefaultLoadingManager = new LoadingManager();

class Loader {

	constructor( manager ) {

		this.manager = ( manager !== undefined ) ? manager : DefaultLoadingManager;

		this.crossOrigin = 'anonymous';
		this.withCredentials = false;
		this.path = '';
		this.resourcePath = '';
		this.requestHeader = {};

	}

	load( /* url, onLoad, onProgress, onError */ ) {}

	loadAsync( url, onProgress ) {

		const scope = this;

		return new Promise( function ( resolve, reject ) {

			scope.load( url, resolve, onProgress, reject );

		} );

	}

	parse( /* data */ ) {}

	setCrossOrigin( crossOrigin ) {

		this.crossOrigin = crossOrigin;
		return this;

	}

	setWithCredentials( value ) {

		this.withCredentials = value;
		return this;

	}

	setPath( path ) {

		this.path = path;
		return this;

	}

	setResourcePath( resourcePath ) {

		this.resourcePath = resourcePath;
		return this;

	}

	setRequestHeader( requestHeader ) {

		this.requestHeader = requestHeader;
		return this;

	}

}

const loading = {};

class FileLoader extends Loader {

	constructor( manager ) {

		super( manager );

	}

	load( url, onLoad, onProgress, onError ) {

		if ( url === undefined ) url = '';

		if ( this.path !== undefined ) url = this.path + url;

		url = this.manager.resolveURL( url );

		const cached = Cache.get( url );

		if ( cached !== undefined ) {

			this.manager.itemStart( url );

			setTimeout( () => {

				if ( onLoad ) onLoad( cached );

				this.manager.itemEnd( url );

			}, 0 );

			return cached;

		}

		// Check if request is duplicate

		if ( loading[ url ] !== undefined ) {

			loading[ url ].push( {

				onLoad: onLoad,
				onProgress: onProgress,
				onError: onError

			} );

			return;

		}

		// Initialise array for duplicate requests
		loading[ url ] = [];

		loading[ url ].push( {
			onLoad: onLoad,
			onProgress: onProgress,
			onError: onError,
		} );

		// create request
		const req = new Request( url, {
			headers: new Headers( this.requestHeader ),
			credentials: this.withCredentials ? 'include' : 'same-origin',
			// An abort controller could be added within a future PR
		} );

		// record states ( avoid data race )
		const mimeType = this.mimeType;
		const responseType = this.responseType;

		// start the fetch
		fetch( req )
			.then( response => {

				if ( response.status === 200 || response.status === 0 ) {

					// Some browsers return HTTP Status 0 when using non-http protocol
					// e.g. 'file://' or 'data://'. Handle as success.

					if ( response.status === 0 ) {

						console.warn( 'THREE.FileLoader: HTTP Status 0 received.' );

					}

					// Workaround: Checking if response.body === undefined for Alipay browser #23548

					if ( typeof ReadableStream === 'undefined' || response.body === undefined || response.body.getReader === undefined ) {

						return response;

					}

					const callbacks = loading[ url ];
					const reader = response.body.getReader();
					const contentLength = response.headers.get( 'Content-Length' );
					const total = contentLength ? parseInt( contentLength ) : 0;
					const lengthComputable = total !== 0;
					let loaded = 0;

					// periodically read data into the new stream tracking while download progress
					const stream = new ReadableStream( {
						start( controller ) {

							readData();

							function readData() {

								reader.read().then( ( { done, value } ) => {

									if ( done ) {

										controller.close();

									} else {

										loaded += value.byteLength;

										const event = new ProgressEvent( 'progress', { lengthComputable, loaded, total } );
										for ( let i = 0, il = callbacks.length; i < il; i ++ ) {

											const callback = callbacks[ i ];
											if ( callback.onProgress ) callback.onProgress( event );

										}

										controller.enqueue( value );
										readData();

									}

								} );

							}

						}

					} );

					return new Response( stream );

				} else {

					throw Error( `fetch for "${response.url}" responded with ${response.status}: ${response.statusText}` );

				}

			} )
			.then( response => {

				switch ( responseType ) {

					case 'arraybuffer':

						return response.arrayBuffer();

					case 'blob':

						return response.blob();

					case 'document':

						return response.text()
							.then( text => {

								const parser = new DOMParser();
								return parser.parseFromString( text, mimeType );

							} );

					case 'json':

						return response.json();

					default:

						if ( mimeType === undefined ) {

							return response.text();

						} else {

							// sniff encoding
							const re = /charset="?([^;"\s]*)"?/i;
							const exec = re.exec( mimeType );
							const label = exec && exec[ 1 ] ? exec[ 1 ].toLowerCase() : undefined;
							const decoder = new TextDecoder( label );
							return response.arrayBuffer().then( ab => decoder.decode( ab ) );

						}

				}

			} )
			.then( data => {

				// Add to cache only on HTTP success, so that we do not cache
				// error response bodies as proper responses to requests.
				Cache.add( url, data );

				const callbacks = loading[ url ];
				delete loading[ url ];

				for ( let i = 0, il = callbacks.length; i < il; i ++ ) {

					const callback = callbacks[ i ];
					if ( callback.onLoad ) callback.onLoad( data );

				}

			} )
			.catch( err => {

				// Abort errors and other errors are handled the same

				const callbacks = loading[ url ];

				if ( callbacks === undefined ) {

					// When onLoad was called and url was deleted in `loading`
					this.manager.itemError( url );
					throw err;

				}

				delete loading[ url ];

				for ( let i = 0, il = callbacks.length; i < il; i ++ ) {

					const callback = callbacks[ i ];
					if ( callback.onError ) callback.onError( err );

				}

				this.manager.itemError( url );

			} )
			.finally( () => {

				this.manager.itemEnd( url );

			} );

		this.manager.itemStart( url );

	}

	setResponseType( value ) {

		this.responseType = value;
		return this;

	}

	setMimeType( value ) {

		this.mimeType = value;
		return this;

	}

}

class AnimationLoader extends Loader {

	constructor( manager ) {

		super( manager );

	}

	load( url, onLoad, onProgress, onError ) {

		const scope = this;

		const loader = new FileLoader( this.manager );
		loader.setPath( this.path );
		loader.setRequestHeader( this.requestHeader );
		loader.setWithCredentials( this.withCredentials );
		loader.load( url, function ( text ) {

			try {

				onLoad( scope.parse( JSON.parse( text ) ) );

			} catch ( e ) {

				if ( onError ) {

					onError( e );

				} else {

					console.error( e );

				}

				scope.manager.itemError( url );

			}

		}, onProgress, onError );

	}

	parse( json ) {

		const animations = [];

		for ( let i = 0; i < json.length; i ++ ) {

			const clip = AnimationClip.parse( json[ i ] );

			animations.push( clip );

		}

		return animations;

	}

}

/**
 * Abstract Base class to block based textures loader (dds, pvr, ...)
 *
 * Sub classes have to implement the parse() method which will be used in load().
 */

class CompressedTextureLoader extends Loader {

	constructor( manager ) {

		super( manager );

	}

	load( url, onLoad, onProgress, onError ) {

		const scope = this;

		const images = [];

		const texture = new CompressedTexture();

		const loader = new FileLoader( this.manager );
		loader.setPath( this.path );
		loader.setResponseType( 'arraybuffer' );
		loader.setRequestHeader( this.requestHeader );
		loader.setWithCredentials( scope.withCredentials );

		let loaded = 0;

		function loadTexture( i ) {

			loader.load( url[ i ], function ( buffer ) {

				const texDatas = scope.parse( buffer, true );

				images[ i ] = {
					width: texDatas.width,
					height: texDatas.height,
					format: texDatas.format,
					mipmaps: texDatas.mipmaps
				};

				loaded += 1;

				if ( loaded === 6 ) {

					if ( texDatas.mipmapCount === 1 ) texture.minFilter = LinearFilter;

					texture.image = images;
					texture.format = texDatas.format;
					texture.needsUpdate = true;

					if ( onLoad ) onLoad( texture );

				}

			}, onProgress, onError );

		}

		if ( Array.isArray( url ) ) {

			for ( let i = 0, il = url.length; i < il; ++ i ) {

				loadTexture( i );

			}

		} else {

			// compressed cubemap texture stored in a single DDS file

			loader.load( url, function ( buffer ) {

				const texDatas = scope.parse( buffer, true );

				if ( texDatas.isCubemap ) {

					const faces = texDatas.mipmaps.length / texDatas.mipmapCount;

					for ( let f = 0; f < faces; f ++ ) {

						images[ f ] = { mipmaps: [] };

						for ( let i = 0; i < texDatas.mipmapCount; i ++ ) {

							images[ f ].mipmaps.push( texDatas.mipmaps[ f * texDatas.mipmapCount + i ] );
							images[ f ].format = texDatas.format;
							images[ f ].width = texDatas.width;
							images[ f ].height = texDatas.height;

						}

					}

					texture.image = images;

				} else {

					texture.image.width = texDatas.width;
					texture.image.height = texDatas.height;
					texture.mipmaps = texDatas.mipmaps;

				}

				if ( texDatas.mipmapCount === 1 ) {

					texture.minFilter = LinearFilter;

				}

				texture.format = texDatas.format;
				texture.needsUpdate = true;

				if ( onLoad ) onLoad( texture );

			}, onProgress, onError );

		}

		return texture;

	}

}

class ImageLoader extends Loader {

	constructor( manager ) {

		super( manager );

	}

	load( url, onLoad, onProgress, onError ) {

		if ( this.path !== undefined ) url = this.path + url;

		url = this.manager.resolveURL( url );

		const scope = this;

		const cached = Cache.get( url );

		if ( cached !== undefined ) {

			scope.manager.itemStart( url );

			setTimeout( function () {

				if ( onLoad ) onLoad( cached );

				scope.manager.itemEnd( url );

			}, 0 );

			return cached;

		}

		const image = createElementNS( 'img' );

		function onImageLoad() {

			removeEventListeners();

			Cache.add( url, this );

			if ( onLoad ) onLoad( this );

			scope.manager.itemEnd( url );

		}

		function onImageError( event ) {

			removeEventListeners();

			if ( onError ) onError( event );

			scope.manager.itemError( url );
			scope.manager.itemEnd( url );

		}

		function removeEventListeners() {

			image.removeEventListener( 'load', onImageLoad, false );
			image.removeEventListener( 'error', onImageError, false );

		}

		image.addEventListener( 'load', onImageLoad, false );
		image.addEventListener( 'error', onImageError, false );

		if ( url.slice( 0, 5 ) !== 'data:' ) {

			if ( this.crossOrigin !== undefined ) image.crossOrigin = this.crossOrigin;

		}

		scope.manager.itemStart( url );

		image.src = url;

		return image;

	}

}

class CubeTextureLoader extends Loader {

	constructor( manager ) {

		super( manager );

	}

	load( urls, onLoad, onProgress, onError ) {

		const texture = new CubeTexture();

		const loader = new ImageLoader( this.manager );
		loader.setCrossOrigin( this.crossOrigin );
		loader.setPath( this.path );

		let loaded = 0;

		function loadTexture( i ) {

			loader.load( urls[ i ], function ( image ) {

				texture.images[ i ] = image;

				loaded ++;

				if ( loaded === 6 ) {

					texture.needsUpdate = true;

					if ( onLoad ) onLoad( texture );

				}

			}, undefined, onError );

		}

		for ( let i = 0; i < urls.length; ++ i ) {

			loadTexture( i );

		}

		return texture;

	}

}

/**
 * Abstract Base class to load generic binary textures formats (rgbe, hdr, ...)
 *
 * Sub classes have to implement the parse() method which will be used in load().
 */

class DataTextureLoader extends Loader {

	constructor( manager ) {

		super( manager );

	}

	load( url, onLoad, onProgress, onError ) {

		const scope = this;

		const texture = new DataTexture();

		const loader = new FileLoader( this.manager );
		loader.setResponseType( 'arraybuffer' );
		loader.setRequestHeader( this.requestHeader );
		loader.setPath( this.path );
		loader.setWithCredentials( scope.withCredentials );
		loader.load( url, function ( buffer ) {

			const texData = scope.parse( buffer );

			if ( ! texData ) return;

			if ( texData.image !== undefined ) {

				texture.image = texData.image;

			} else if ( texData.data !== undefined ) {

				texture.image.width = texData.width;
				texture.image.height = texData.height;
				texture.image.data = texData.data;

			}

			texture.wrapS = texData.wrapS !== undefined ? texData.wrapS : ClampToEdgeWrapping;
			texture.wrapT = texData.wrapT !== undefined ? texData.wrapT : ClampToEdgeWrapping;

			texture.magFilter = texData.magFilter !== undefined ? texData.magFilter : LinearFilter;
			texture.minFilter = texData.minFilter !== undefined ? texData.minFilter : LinearFilter;

			texture.anisotropy = texData.anisotropy !== undefined ? texData.anisotropy : 1;

			if ( texData.encoding !== undefined ) {

				texture.encoding = texData.encoding;

			}

			if ( texData.flipY !== undefined ) {

				texture.flipY = texData.flipY;

			}

			if ( texData.format !== undefined ) {

				texture.format = texData.format;

			}

			if ( texData.type !== undefined ) {

				texture.type = texData.type;

			}

			if ( texData.mipmaps !== undefined ) {

				texture.mipmaps = texData.mipmaps;
				texture.minFilter = LinearMipmapLinearFilter; // presumably...

			}

			if ( texData.mipmapCount === 1 ) {

				texture.minFilter = LinearFilter;

			}

			if ( texData.generateMipmaps !== undefined ) {

				texture.generateMipmaps = texData.generateMipmaps;

			}

			texture.needsUpdate = true;

			if ( onLoad ) onLoad( texture, texData );

		}, onProgress, onError );


		return texture;

	}

}

class TextureLoader extends Loader {

	constructor( manager ) {

		super( manager );

	}

	load( url, onLoad, onProgress, onError ) {

		const texture = new Texture();

		const loader = new ImageLoader( this.manager );
		loader.setCrossOrigin( this.crossOrigin );
		loader.setPath( this.path );

		loader.load( url, function ( image ) {

			texture.image = image;
			texture.needsUpdate = true;

			if ( onLoad !== undefined ) {

				onLoad( texture );

			}

		}, onProgress, onError );

		return texture;

	}

}

class Light extends Object3D {

	constructor( color, intensity = 1 ) {

		super();

		this.type = 'Light';

		this.color = new Color( color );
		this.intensity = intensity;

	}

	dispose() {

		// Empty here in base class; some subclasses override.

	}

	copy( source ) {

		super.copy( source );

		this.color.copy( source.color );
		this.intensity = source.intensity;

		return this;

	}

	toJSON( meta ) {

		const data = super.toJSON( meta );

		data.object.color = this.color.getHex();
		data.object.intensity = this.intensity;

		if ( this.groundColor !== undefined ) data.object.groundColor = this.groundColor.getHex();

		if ( this.distance !== undefined ) data.object.distance = this.distance;
		if ( this.angle !== undefined ) data.object.angle = this.angle;
		if ( this.decay !== undefined ) data.object.decay = this.decay;
		if ( this.penumbra !== undefined ) data.object.penumbra = this.penumbra;

		if ( this.shadow !== undefined ) data.object.shadow = this.shadow.toJSON();

		return data;

	}

}

Light.prototype.isLight = true;

class HemisphereLight extends Light {

	constructor( skyColor, groundColor, intensity ) {

		super( skyColor, intensity );

		this.type = 'HemisphereLight';

		this.position.copy( Object3D.DefaultUp );
		this.updateMatrix();

		this.groundColor = new Color( groundColor );

	}

	copy( source ) {

		Light.prototype.copy.call( this, source );

		this.groundColor.copy( source.groundColor );

		return this;

	}

}

HemisphereLight.prototype.isHemisphereLight = true;

const _projScreenMatrix$1 = /*@__PURE__*/ new Matrix4();
const _lightPositionWorld$1 = /*@__PURE__*/ new Vector3();
const _lookTarget$1 = /*@__PURE__*/ new Vector3();

class LightShadow {

	constructor( camera ) {

		this.camera = camera;

		this.bias = 0;
		this.normalBias = 0;
		this.radius = 1;
		this.blurSamples = 8;

		this.mapSize = new Vector2( 512, 512 );

		this.map = null;
		this.mapPass = null;
		this.matrix = new Matrix4();

		this.autoUpdate = true;
		this.needsUpdate = false;

		this._frustum = new Frustum();
		this._frameExtents = new Vector2( 1, 1 );

		this._viewportCount = 1;

		this._viewports = [

			new Vector4$1( 0, 0, 1, 1 )

		];

	}

	getViewportCount() {

		return this._viewportCount;

	}

	getFrustum() {

		return this._frustum;

	}

	updateMatrices( light ) {

		const shadowCamera = this.camera;
		const shadowMatrix = this.matrix;

		_lightPositionWorld$1.setFromMatrixPosition( light.matrixWorld );
		shadowCamera.position.copy( _lightPositionWorld$1 );

		_lookTarget$1.setFromMatrixPosition( light.target.matrixWorld );
		shadowCamera.lookAt( _lookTarget$1 );
		shadowCamera.updateMatrixWorld();

		_projScreenMatrix$1.multiplyMatrices( shadowCamera.projectionMatrix, shadowCamera.matrixWorldInverse );
		this._frustum.setFromProjectionMatrix( _projScreenMatrix$1 );

		shadowMatrix.set(
			0.5, 0.0, 0.0, 0.5,
			0.0, 0.5, 0.0, 0.5,
			0.0, 0.0, 0.5, 0.5,
			0.0, 0.0, 0.0, 1.0
		);

		shadowMatrix.multiply( shadowCamera.projectionMatrix );
		shadowMatrix.multiply( shadowCamera.matrixWorldInverse );

	}

	getViewport( viewportIndex ) {

		return this._viewports[ viewportIndex ];

	}

	getFrameExtents() {

		return this._frameExtents;

	}

	dispose() {

		if ( this.map ) {

			this.map.dispose();

		}

		if ( this.mapPass ) {

			this.mapPass.dispose();

		}

	}

	copy( source ) {

		this.camera = source.camera.clone();

		this.bias = source.bias;
		this.radius = source.radius;

		this.mapSize.copy( source.mapSize );

		return this;

	}

	clone() {

		return new this.constructor().copy( this );

	}

	toJSON() {

		const object = {};

		if ( this.bias !== 0 ) object.bias = this.bias;
		if ( this.normalBias !== 0 ) object.normalBias = this.normalBias;
		if ( this.radius !== 1 ) object.radius = this.radius;
		if ( this.mapSize.x !== 512 || this.mapSize.y !== 512 ) object.mapSize = this.mapSize.toArray();

		object.camera = this.camera.toJSON( false ).object;
		delete object.camera.matrix;

		return object;

	}

}

class SpotLightShadow extends LightShadow {

	constructor() {

		super( new PerspectiveCamera( 50, 1, 0.5, 500 ) );

		this.focus = 1;

	}

	updateMatrices( light ) {

		const camera = this.camera;

		const fov = RAD2DEG * 2 * light.angle * this.focus;
		const aspect = this.mapSize.width / this.mapSize.height;
		const far = light.distance || camera.far;

		if ( fov !== camera.fov || aspect !== camera.aspect || far !== camera.far ) {

			camera.fov = fov;
			camera.aspect = aspect;
			camera.far = far;
			camera.updateProjectionMatrix();

		}

		super.updateMatrices( light );

	}

	copy( source ) {

		super.copy( source );

		this.focus = source.focus;

		return this;

	}

}

SpotLightShadow.prototype.isSpotLightShadow = true;

class SpotLight extends Light {

	constructor( color, intensity, distance = 0, angle = Math.PI / 3, penumbra = 0, decay = 1 ) {

		super( color, intensity );

		this.type = 'SpotLight';

		this.position.copy( Object3D.DefaultUp );
		this.updateMatrix();

		this.target = new Object3D();

		this.distance = distance;
		this.angle = angle;
		this.penumbra = penumbra;
		this.decay = decay; // for physically correct lights, should be 2.

		this.shadow = new SpotLightShadow();

	}

	get power() {

		// compute the light's luminous power (in lumens) from its intensity (in candela)
		// by convention for a spotlight, luminous power (lm) = π * luminous intensity (cd)
		return this.intensity * Math.PI;

	}

	set power( power ) {

		// set the light's intensity (in candela) from the desired luminous power (in lumens)
		this.intensity = power / Math.PI;

	}

	dispose() {

		this.shadow.dispose();

	}

	copy( source ) {

		super.copy( source );

		this.distance = source.distance;
		this.angle = source.angle;
		this.penumbra = source.penumbra;
		this.decay = source.decay;

		this.target = source.target.clone();

		this.shadow = source.shadow.clone();

		return this;

	}

}

SpotLight.prototype.isSpotLight = true;

const _projScreenMatrix = /*@__PURE__*/ new Matrix4();
const _lightPositionWorld = /*@__PURE__*/ new Vector3();
const _lookTarget = /*@__PURE__*/ new Vector3();

class PointLightShadow extends LightShadow {

	constructor() {

		super( new PerspectiveCamera( 90, 1, 0.5, 500 ) );

		this._frameExtents = new Vector2( 4, 2 );

		this._viewportCount = 6;

		this._viewports = [
			// These viewports map a cube-map onto a 2D texture with the
			// following orientation:
			//
			//  xzXZ
			//   y Y
			//
			// X - Positive x direction
			// x - Negative x direction
			// Y - Positive y direction
			// y - Negative y direction
			// Z - Positive z direction
			// z - Negative z direction

			// positive X
			new Vector4$1( 2, 1, 1, 1 ),
			// negative X
			new Vector4$1( 0, 1, 1, 1 ),
			// positive Z
			new Vector4$1( 3, 1, 1, 1 ),
			// negative Z
			new Vector4$1( 1, 1, 1, 1 ),
			// positive Y
			new Vector4$1( 3, 0, 1, 1 ),
			// negative Y
			new Vector4$1( 1, 0, 1, 1 )
		];

		this._cubeDirections = [
			new Vector3( 1, 0, 0 ), new Vector3( - 1, 0, 0 ), new Vector3( 0, 0, 1 ),
			new Vector3( 0, 0, - 1 ), new Vector3( 0, 1, 0 ), new Vector3( 0, - 1, 0 )
		];

		this._cubeUps = [
			new Vector3( 0, 1, 0 ), new Vector3( 0, 1, 0 ), new Vector3( 0, 1, 0 ),
			new Vector3( 0, 1, 0 ), new Vector3( 0, 0, 1 ),	new Vector3( 0, 0, - 1 )
		];

	}

	updateMatrices( light, viewportIndex = 0 ) {

		const camera = this.camera;
		const shadowMatrix = this.matrix;

		const far = light.distance || camera.far;

		if ( far !== camera.far ) {

			camera.far = far;
			camera.updateProjectionMatrix();

		}

		_lightPositionWorld.setFromMatrixPosition( light.matrixWorld );
		camera.position.copy( _lightPositionWorld );

		_lookTarget.copy( camera.position );
		_lookTarget.add( this._cubeDirections[ viewportIndex ] );
		camera.up.copy( this._cubeUps[ viewportIndex ] );
		camera.lookAt( _lookTarget );
		camera.updateMatrixWorld();

		shadowMatrix.makeTranslation( - _lightPositionWorld.x, - _lightPositionWorld.y, - _lightPositionWorld.z );

		_projScreenMatrix.multiplyMatrices( camera.projectionMatrix, camera.matrixWorldInverse );
		this._frustum.setFromProjectionMatrix( _projScreenMatrix );

	}

}

PointLightShadow.prototype.isPointLightShadow = true;

class PointLight extends Light {

	constructor( color, intensity, distance = 0, decay = 1 ) {

		super( color, intensity );

		this.type = 'PointLight';

		this.distance = distance;
		this.decay = decay; // for physically correct lights, should be 2.

		this.shadow = new PointLightShadow();

	}

	get power() {

		// compute the light's luminous power (in lumens) from its intensity (in candela)
		// for an isotropic light source, luminous power (lm) = 4 π luminous intensity (cd)
		return this.intensity * 4 * Math.PI;

	}

	set power( power ) {

		// set the light's intensity (in candela) from the desired luminous power (in lumens)
		this.intensity = power / ( 4 * Math.PI );

	}

	dispose() {

		this.shadow.dispose();

	}

	copy( source ) {

		super.copy( source );

		this.distance = source.distance;
		this.decay = source.decay;

		this.shadow = source.shadow.clone();

		return this;

	}

}

PointLight.prototype.isPointLight = true;

class DirectionalLightShadow extends LightShadow {

	constructor() {

		super( new OrthographicCamera( - 5, 5, 5, - 5, 0.5, 500 ) );

	}

}

DirectionalLightShadow.prototype.isDirectionalLightShadow = true;

class DirectionalLight extends Light {

	constructor( color, intensity ) {

		super( color, intensity );

		this.type = 'DirectionalLight';

		this.position.copy( Object3D.DefaultUp );
		this.updateMatrix();

		this.target = new Object3D();

		this.shadow = new DirectionalLightShadow();

	}

	dispose() {

		this.shadow.dispose();

	}

	copy( source ) {

		super.copy( source );

		this.target = source.target.clone();
		this.shadow = source.shadow.clone();

		return this;

	}

}

DirectionalLight.prototype.isDirectionalLight = true;

class AmbientLight extends Light {

	constructor( color, intensity ) {

		super( color, intensity );

		this.type = 'AmbientLight';

	}

}

AmbientLight.prototype.isAmbientLight = true;

class RectAreaLight extends Light {

	constructor( color, intensity, width = 10, height = 10 ) {

		super( color, intensity );

		this.type = 'RectAreaLight';

		this.width = width;
		this.height = height;

	}

	get power() {

		// compute the light's luminous power (in lumens) from its intensity (in nits)
		return this.intensity * this.width * this.height * Math.PI;

	}

	set power( power ) {

		// set the light's intensity (in nits) from the desired luminous power (in lumens)
		this.intensity = power / ( this.width * this.height * Math.PI );

	}

	copy( source ) {

		super.copy( source );

		this.width = source.width;
		this.height = source.height;

		return this;

	}

	toJSON( meta ) {

		const data = super.toJSON( meta );

		data.object.width = this.width;
		data.object.height = this.height;

		return data;

	}

}

RectAreaLight.prototype.isRectAreaLight = true;

/**
 * Primary reference:
 *   https://graphics.stanford.edu/papers/envmap/envmap.pdf
 *
 * Secondary reference:
 *   https://www.ppsloan.org/publications/StupidSH36.pdf
 */

// 3-band SH defined by 9 coefficients

class SphericalHarmonics3 {

	constructor() {

		this.coefficients = [];

		for ( let i = 0; i < 9; i ++ ) {

			this.coefficients.push( new Vector3() );

		}

	}

	set( coefficients ) {

		for ( let i = 0; i < 9; i ++ ) {

			this.coefficients[ i ].copy( coefficients[ i ] );

		}

		return this;

	}

	zero() {

		for ( let i = 0; i < 9; i ++ ) {

			this.coefficients[ i ].set( 0, 0, 0 );

		}

		return this;

	}

	// get the radiance in the direction of the normal
	// target is a Vector3
	getAt( normal, target ) {

		// normal is assumed to be unit length

		const x = normal.x, y = normal.y, z = normal.z;

		const coeff = this.coefficients;

		// band 0
		target.copy( coeff[ 0 ] ).multiplyScalar( 0.282095 );

		// band 1
		target.addScaledVector( coeff[ 1 ], 0.488603 * y );
		target.addScaledVector( coeff[ 2 ], 0.488603 * z );
		target.addScaledVector( coeff[ 3 ], 0.488603 * x );

		// band 2
		target.addScaledVector( coeff[ 4 ], 1.092548 * ( x * y ) );
		target.addScaledVector( coeff[ 5 ], 1.092548 * ( y * z ) );
		target.addScaledVector( coeff[ 6 ], 0.315392 * ( 3.0 * z * z - 1.0 ) );
		target.addScaledVector( coeff[ 7 ], 1.092548 * ( x * z ) );
		target.addScaledVector( coeff[ 8 ], 0.546274 * ( x * x - y * y ) );

		return target;

	}

	// get the irradiance (radiance convolved with cosine lobe) in the direction of the normal
	// target is a Vector3
	// https://graphics.stanford.edu/papers/envmap/envmap.pdf
	getIrradianceAt( normal, target ) {

		// normal is assumed to be unit length

		const x = normal.x, y = normal.y, z = normal.z;

		const coeff = this.coefficients;

		// band 0
		target.copy( coeff[ 0 ] ).multiplyScalar( 0.886227 ); // π * 0.282095

		// band 1
		target.addScaledVector( coeff[ 1 ], 2.0 * 0.511664 * y ); // ( 2 * π / 3 ) * 0.488603
		target.addScaledVector( coeff[ 2 ], 2.0 * 0.511664 * z );
		target.addScaledVector( coeff[ 3 ], 2.0 * 0.511664 * x );

		// band 2
		target.addScaledVector( coeff[ 4 ], 2.0 * 0.429043 * x * y ); // ( π / 4 ) * 1.092548
		target.addScaledVector( coeff[ 5 ], 2.0 * 0.429043 * y * z );
		target.addScaledVector( coeff[ 6 ], 0.743125 * z * z - 0.247708 ); // ( π / 4 ) * 0.315392 * 3
		target.addScaledVector( coeff[ 7 ], 2.0 * 0.429043 * x * z );
		target.addScaledVector( coeff[ 8 ], 0.429043 * ( x * x - y * y ) ); // ( π / 4 ) * 0.546274

		return target;

	}

	add( sh ) {

		for ( let i = 0; i < 9; i ++ ) {

			this.coefficients[ i ].add( sh.coefficients[ i ] );

		}

		return this;

	}

	addScaledSH( sh, s ) {

		for ( let i = 0; i < 9; i ++ ) {

			this.coefficients[ i ].addScaledVector( sh.coefficients[ i ], s );

		}

		return this;

	}

	scale( s ) {

		for ( let i = 0; i < 9; i ++ ) {

			this.coefficients[ i ].multiplyScalar( s );

		}

		return this;

	}

	lerp( sh, alpha ) {

		for ( let i = 0; i < 9; i ++ ) {

			this.coefficients[ i ].lerp( sh.coefficients[ i ], alpha );

		}

		return this;

	}

	equals( sh ) {

		for ( let i = 0; i < 9; i ++ ) {

			if ( ! this.coefficients[ i ].equals( sh.coefficients[ i ] ) ) {

				return false;

			}

		}

		return true;

	}

	copy( sh ) {

		return this.set( sh.coefficients );

	}

	clone() {

		return new this.constructor().copy( this );

	}

	fromArray( array, offset = 0 ) {

		const coefficients = this.coefficients;

		for ( let i = 0; i < 9; i ++ ) {

			coefficients[ i ].fromArray( array, offset + ( i * 3 ) );

		}

		return this;

	}

	toArray( array = [], offset = 0 ) {

		const coefficients = this.coefficients;

		for ( let i = 0; i < 9; i ++ ) {

			coefficients[ i ].toArray( array, offset + ( i * 3 ) );

		}

		return array;

	}

	// evaluate the basis functions
	// shBasis is an Array[ 9 ]
	static getBasisAt( normal, shBasis ) {

		// normal is assumed to be unit length

		const x = normal.x, y = normal.y, z = normal.z;

		// band 0
		shBasis[ 0 ] = 0.282095;

		// band 1
		shBasis[ 1 ] = 0.488603 * y;
		shBasis[ 2 ] = 0.488603 * z;
		shBasis[ 3 ] = 0.488603 * x;

		// band 2
		shBasis[ 4 ] = 1.092548 * x * y;
		shBasis[ 5 ] = 1.092548 * y * z;
		shBasis[ 6 ] = 0.315392 * ( 3 * z * z - 1 );
		shBasis[ 7 ] = 1.092548 * x * z;
		shBasis[ 8 ] = 0.546274 * ( x * x - y * y );

	}

}

SphericalHarmonics3.prototype.isSphericalHarmonics3 = true;

class LightProbe extends Light {

	constructor( sh = new SphericalHarmonics3(), intensity = 1 ) {

		super( undefined, intensity );

		this.sh = sh;

	}

	copy( source ) {

		super.copy( source );

		this.sh.copy( source.sh );

		return this;

	}

	fromJSON( json ) {

		this.intensity = json.intensity; // TODO: Move this bit to Light.fromJSON();
		this.sh.fromArray( json.sh );

		return this;

	}

	toJSON( meta ) {

		const data = super.toJSON( meta );

		data.object.sh = this.sh.toArray();

		return data;

	}

}

LightProbe.prototype.isLightProbe = true;

class MaterialLoader extends Loader {

	constructor( manager ) {

		super( manager );
		this.textures = {};

	}

	load( url, onLoad, onProgress, onError ) {

		const scope = this;

		const loader = new FileLoader( scope.manager );
		loader.setPath( scope.path );
		loader.setRequestHeader( scope.requestHeader );
		loader.setWithCredentials( scope.withCredentials );
		loader.load( url, function ( text ) {

			try {

				onLoad( scope.parse( JSON.parse( text ) ) );

			} catch ( e ) {

				if ( onError ) {

					onError( e );

				} else {

					console.error( e );

				}

				scope.manager.itemError( url );

			}

		}, onProgress, onError );

	}

	parse( json ) {

		const textures = this.textures;

		function getTexture( name ) {

			if ( textures[ name ] === undefined ) {

				console.warn( 'THREE.MaterialLoader: Undefined texture', name );

			}

			return textures[ name ];

		}

		const material = Material.fromType( json.type );

		if ( json.uuid !== undefined ) material.uuid = json.uuid;
		if ( json.name !== undefined ) material.name = json.name;
		if ( json.color !== undefined && material.color !== undefined ) material.color.setHex( json.color );
		if ( json.roughness !== undefined ) material.roughness = json.roughness;
		if ( json.metalness !== undefined ) material.metalness = json.metalness;
		if ( json.sheen !== undefined ) material.sheen = json.sheen;
		if ( json.sheenColor !== undefined ) material.sheenColor = new Color().setHex( json.sheenColor );
		if ( json.sheenRoughness !== undefined ) material.sheenRoughness = json.sheenRoughness;
		if ( json.emissive !== undefined && material.emissive !== undefined ) material.emissive.setHex( json.emissive );
		if ( json.specular !== undefined && material.specular !== undefined ) material.specular.setHex( json.specular );
		if ( json.specularIntensity !== undefined ) material.specularIntensity = json.specularIntensity;
		if ( json.specularColor !== undefined && material.specularColor !== undefined ) material.specularColor.setHex( json.specularColor );
		if ( json.shininess !== undefined ) material.shininess = json.shininess;
		if ( json.clearcoat !== undefined ) material.clearcoat = json.clearcoat;
		if ( json.clearcoatRoughness !== undefined ) material.clearcoatRoughness = json.clearcoatRoughness;
		if ( json.transmission !== undefined ) material.transmission = json.transmission;
		if ( json.thickness !== undefined ) material.thickness = json.thickness;
		if ( json.attenuationDistance !== undefined ) material.attenuationDistance = json.attenuationDistance;
		if ( json.attenuationColor !== undefined && material.attenuationColor !== undefined ) material.attenuationColor.setHex( json.attenuationColor );
		if ( json.fog !== undefined ) material.fog = json.fog;
		if ( json.flatShading !== undefined ) material.flatShading = json.flatShading;
		if ( json.blending !== undefined ) material.blending = json.blending;
		if ( json.combine !== undefined ) material.combine = json.combine;
		if ( json.side !== undefined ) material.side = json.side;
		if ( json.shadowSide !== undefined ) material.shadowSide = json.shadowSide;
		if ( json.opacity !== undefined ) material.opacity = json.opacity;
		if ( json.transparent !== undefined ) material.transparent = json.transparent;
		if ( json.alphaTest !== undefined ) material.alphaTest = json.alphaTest;
		if ( json.depthTest !== undefined ) material.depthTest = json.depthTest;
		if ( json.depthWrite !== undefined ) material.depthWrite = json.depthWrite;
		if ( json.colorWrite !== undefined ) material.colorWrite = json.colorWrite;

		if ( json.stencilWrite !== undefined ) material.stencilWrite = json.stencilWrite;
		if ( json.stencilWriteMask !== undefined ) material.stencilWriteMask = json.stencilWriteMask;
		if ( json.stencilFunc !== undefined ) material.stencilFunc = json.stencilFunc;
		if ( json.stencilRef !== undefined ) material.stencilRef = json.stencilRef;
		if ( json.stencilFuncMask !== undefined ) material.stencilFuncMask = json.stencilFuncMask;
		if ( json.stencilFail !== undefined ) material.stencilFail = json.stencilFail;
		if ( json.stencilZFail !== undefined ) material.stencilZFail = json.stencilZFail;
		if ( json.stencilZPass !== undefined ) material.stencilZPass = json.stencilZPass;

		if ( json.wireframe !== undefined ) material.wireframe = json.wireframe;
		if ( json.wireframeLinewidth !== undefined ) material.wireframeLinewidth = json.wireframeLinewidth;
		if ( json.wireframeLinecap !== undefined ) material.wireframeLinecap = json.wireframeLinecap;
		if ( json.wireframeLinejoin !== undefined ) material.wireframeLinejoin = json.wireframeLinejoin;

		if ( json.rotation !== undefined ) material.rotation = json.rotation;

		if ( json.linewidth !== 1 ) material.linewidth = json.linewidth;
		if ( json.dashSize !== undefined ) material.dashSize = json.dashSize;
		if ( json.gapSize !== undefined ) material.gapSize = json.gapSize;
		if ( json.scale !== undefined ) material.scale = json.scale;

		if ( json.polygonOffset !== undefined ) material.polygonOffset = json.polygonOffset;
		if ( json.polygonOffsetFactor !== undefined ) material.polygonOffsetFactor = json.polygonOffsetFactor;
		if ( json.polygonOffsetUnits !== undefined ) material.polygonOffsetUnits = json.polygonOffsetUnits;

		if ( json.dithering !== undefined ) material.dithering = json.dithering;

		if ( json.alphaToCoverage !== undefined ) material.alphaToCoverage = json.alphaToCoverage;
		if ( json.premultipliedAlpha !== undefined ) material.premultipliedAlpha = json.premultipliedAlpha;

		if ( json.visible !== undefined ) material.visible = json.visible;

		if ( json.toneMapped !== undefined ) material.toneMapped = json.toneMapped;

		if ( json.userData !== undefined ) material.userData = json.userData;

		if ( json.vertexColors !== undefined ) {

			if ( typeof json.vertexColors === 'number' ) {

				material.vertexColors = ( json.vertexColors > 0 ) ? true : false;

			} else {

				material.vertexColors = json.vertexColors;

			}

		}

		// Shader Material

		if ( json.uniforms !== undefined ) {

			for ( const name in json.uniforms ) {

				const uniform = json.uniforms[ name ];

				material.uniforms[ name ] = {};

				switch ( uniform.type ) {

					case 't':
						material.uniforms[ name ].value = getTexture( uniform.value );
						break;

					case 'c':
						material.uniforms[ name ].value = new Color().setHex( uniform.value );
						break;

					case 'v2':
						material.uniforms[ name ].value = new Vector2().fromArray( uniform.value );
						break;

					case 'v3':
						material.uniforms[ name ].value = new Vector3().fromArray( uniform.value );
						break;

					case 'v4':
						material.uniforms[ name ].value = new Vector4$1().fromArray( uniform.value );
						break;

					case 'm3':
						material.uniforms[ name ].value = new Matrix3().fromArray( uniform.value );
						break;

					case 'm4':
						material.uniforms[ name ].value = new Matrix4().fromArray( uniform.value );
						break;

					default:
						material.uniforms[ name ].value = uniform.value;

				}

			}

		}

		if ( json.defines !== undefined ) material.defines = json.defines;
		if ( json.vertexShader !== undefined ) material.vertexShader = json.vertexShader;
		if ( json.fragmentShader !== undefined ) material.fragmentShader = json.fragmentShader;

		if ( json.extensions !== undefined ) {

			for ( const key in json.extensions ) {

				material.extensions[ key ] = json.extensions[ key ];

			}

		}

		// Deprecated

		if ( json.shading !== undefined ) material.flatShading = json.shading === 1; // THREE.FlatShading

		// for PointsMaterial

		if ( json.size !== undefined ) material.size = json.size;
		if ( json.sizeAttenuation !== undefined ) material.sizeAttenuation = json.sizeAttenuation;

		// maps

		if ( json.map !== undefined ) material.map = getTexture( json.map );
		if ( json.matcap !== undefined ) material.matcap = getTexture( json.matcap );

		if ( json.alphaMap !== undefined ) material.alphaMap = getTexture( json.alphaMap );

		if ( json.bumpMap !== undefined ) material.bumpMap = getTexture( json.bumpMap );
		if ( json.bumpScale !== undefined ) material.bumpScale = json.bumpScale;

		if ( json.normalMap !== undefined ) material.normalMap = getTexture( json.normalMap );
		if ( json.normalMapType !== undefined ) material.normalMapType = json.normalMapType;
		if ( json.normalScale !== undefined ) {

			let normalScale = json.normalScale;

			if ( Array.isArray( normalScale ) === false ) {

				// Blender exporter used to export a scalar. See #7459

				normalScale = [ normalScale, normalScale ];

			}

			material.normalScale = new Vector2().fromArray( normalScale );

		}

		if ( json.displacementMap !== undefined ) material.displacementMap = getTexture( json.displacementMap );
		if ( json.displacementScale !== undefined ) material.displacementScale = json.displacementScale;
		if ( json.displacementBias !== undefined ) material.displacementBias = json.displacementBias;

		if ( json.roughnessMap !== undefined ) material.roughnessMap = getTexture( json.roughnessMap );
		if ( json.metalnessMap !== undefined ) material.metalnessMap = getTexture( json.metalnessMap );

		if ( json.emissiveMap !== undefined ) material.emissiveMap = getTexture( json.emissiveMap );
		if ( json.emissiveIntensity !== undefined ) material.emissiveIntensity = json.emissiveIntensity;

		if ( json.specularMap !== undefined ) material.specularMap = getTexture( json.specularMap );
		if ( json.specularIntensityMap !== undefined ) material.specularIntensityMap = getTexture( json.specularIntensityMap );
		if ( json.specularColorMap !== undefined ) material.specularColorMap = getTexture( json.specularColorMap );

		if ( json.envMap !== undefined ) material.envMap = getTexture( json.envMap );
		if ( json.envMapIntensity !== undefined ) material.envMapIntensity = json.envMapIntensity;

		if ( json.reflectivity !== undefined ) material.reflectivity = json.reflectivity;
		if ( json.refractionRatio !== undefined ) material.refractionRatio = json.refractionRatio;

		if ( json.lightMap !== undefined ) material.lightMap = getTexture( json.lightMap );
		if ( json.lightMapIntensity !== undefined ) material.lightMapIntensity = json.lightMapIntensity;

		if ( json.aoMap !== undefined ) material.aoMap = getTexture( json.aoMap );
		if ( json.aoMapIntensity !== undefined ) material.aoMapIntensity = json.aoMapIntensity;

		if ( json.gradientMap !== undefined ) material.gradientMap = getTexture( json.gradientMap );

		if ( json.clearcoatMap !== undefined ) material.clearcoatMap = getTexture( json.clearcoatMap );
		if ( json.clearcoatRoughnessMap !== undefined ) material.clearcoatRoughnessMap = getTexture( json.clearcoatRoughnessMap );
		if ( json.clearcoatNormalMap !== undefined ) material.clearcoatNormalMap = getTexture( json.clearcoatNormalMap );
		if ( json.clearcoatNormalScale !== undefined ) material.clearcoatNormalScale = new Vector2().fromArray( json.clearcoatNormalScale );

		if ( json.transmissionMap !== undefined ) material.transmissionMap = getTexture( json.transmissionMap );
		if ( json.thicknessMap !== undefined ) material.thicknessMap = getTexture( json.thicknessMap );

		if ( json.sheenColorMap !== undefined ) material.sheenColorMap = getTexture( json.sheenColorMap );
		if ( json.sheenRoughnessMap !== undefined ) material.sheenRoughnessMap = getTexture( json.sheenRoughnessMap );

		return material;

	}

	setTextures( value ) {

		this.textures = value;
		return this;

	}

}

class LoaderUtils {

	static decodeText( array ) {

		if ( typeof TextDecoder !== 'undefined' ) {

			return new TextDecoder().decode( array );

		}

		// Avoid the String.fromCharCode.apply(null, array) shortcut, which
		// throws a "maximum call stack size exceeded" error for large arrays.

		let s = '';

		for ( let i = 0, il = array.length; i < il; i ++ ) {

			// Implicitly assumes little-endian.
			s += String.fromCharCode( array[ i ] );

		}

		try {

			// merges multi-byte utf-8 characters.

			return decodeURIComponent( escape( s ) );

		} catch ( e ) { // see #16358

			return s;

		}

	}

	static extractUrlBase( url ) {

		const index = url.lastIndexOf( '/' );

		if ( index === - 1 ) return './';

		return url.slice( 0, index + 1 );

	}

	static resolveURL( url, path ) {

		// Invalid URL
		if ( typeof url !== 'string' || url === '' ) return '';

		// Host Relative URL
		if ( /^https?:\/\//i.test( path ) && /^\//.test( url ) ) {

			path = path.replace( /(^https?:\/\/[^\/]+).*/i, '$1' );

		}

		// Absolute URL http://,https://,//
		if ( /^(https?:)?\/\//i.test( url ) ) return url;

		// Data URI
		if ( /^data:.*,.*$/i.test( url ) ) return url;

		// Blob URL
		if ( /^blob:.*$/i.test( url ) ) return url;

		// Relative URL
		return path + url;

	}

}

class InstancedBufferGeometry extends BufferGeometry {

	constructor() {

		super();

		this.type = 'InstancedBufferGeometry';
		this.instanceCount = Infinity;

	}

	copy( source ) {

		super.copy( source );

		this.instanceCount = source.instanceCount;

		return this;

	}

	clone() {

		return new this.constructor().copy( this );

	}

	toJSON() {

		const data = super.toJSON( this );

		data.instanceCount = this.instanceCount;

		data.isInstancedBufferGeometry = true;

		return data;

	}

}

InstancedBufferGeometry.prototype.isInstancedBufferGeometry = true;

class BufferGeometryLoader extends Loader {

	constructor( manager ) {

		super( manager );

	}

	load( url, onLoad, onProgress, onError ) {

		const scope = this;

		const loader = new FileLoader( scope.manager );
		loader.setPath( scope.path );
		loader.setRequestHeader( scope.requestHeader );
		loader.setWithCredentials( scope.withCredentials );
		loader.load( url, function ( text ) {

			try {

				onLoad( scope.parse( JSON.parse( text ) ) );

			} catch ( e ) {

				if ( onError ) {

					onError( e );

				} else {

					console.error( e );

				}

				scope.manager.itemError( url );

			}

		}, onProgress, onError );

	}

	parse( json ) {

		const interleavedBufferMap = {};
		const arrayBufferMap = {};

		function getInterleavedBuffer( json, uuid ) {

			if ( interleavedBufferMap[ uuid ] !== undefined ) return interleavedBufferMap[ uuid ];

			const interleavedBuffers = json.interleavedBuffers;
			const interleavedBuffer = interleavedBuffers[ uuid ];

			const buffer = getArrayBuffer( json, interleavedBuffer.buffer );

			const array = getTypedArray( interleavedBuffer.type, buffer );
			const ib = new InterleavedBuffer( array, interleavedBuffer.stride );
			ib.uuid = interleavedBuffer.uuid;

			interleavedBufferMap[ uuid ] = ib;

			return ib;

		}

		function getArrayBuffer( json, uuid ) {

			if ( arrayBufferMap[ uuid ] !== undefined ) return arrayBufferMap[ uuid ];

			const arrayBuffers = json.arrayBuffers;
			const arrayBuffer = arrayBuffers[ uuid ];

			const ab = new Uint32Array( arrayBuffer ).buffer;

			arrayBufferMap[ uuid ] = ab;

			return ab;

		}

		const geometry = json.isInstancedBufferGeometry ? new InstancedBufferGeometry() : new BufferGeometry();

		const index = json.data.index;

		if ( index !== undefined ) {

			const typedArray = getTypedArray( index.type, index.array );
			geometry.setIndex( new BufferAttribute( typedArray, 1 ) );

		}

		const attributes = json.data.attributes;

		for ( const key in attributes ) {

			const attribute = attributes[ key ];
			let bufferAttribute;

			if ( attribute.isInterleavedBufferAttribute ) {

				const interleavedBuffer = getInterleavedBuffer( json.data, attribute.data );
				bufferAttribute = new InterleavedBufferAttribute( interleavedBuffer, attribute.itemSize, attribute.offset, attribute.normalized );

			} else {

				const typedArray = getTypedArray( attribute.type, attribute.array );
				const bufferAttributeConstr = attribute.isInstancedBufferAttribute ? InstancedBufferAttribute : BufferAttribute;
				bufferAttribute = new bufferAttributeConstr( typedArray, attribute.itemSize, attribute.normalized );

			}

			if ( attribute.name !== undefined ) bufferAttribute.name = attribute.name;
			if ( attribute.usage !== undefined ) bufferAttribute.setUsage( attribute.usage );

			if ( attribute.updateRange !== undefined ) {

				bufferAttribute.updateRange.offset = attribute.updateRange.offset;
				bufferAttribute.updateRange.count = attribute.updateRange.count;

			}

			geometry.setAttribute( key, bufferAttribute );

		}

		const morphAttributes = json.data.morphAttributes;

		if ( morphAttributes ) {

			for ( const key in morphAttributes ) {

				const attributeArray = morphAttributes[ key ];

				const array = [];

				for ( let i = 0, il = attributeArray.length; i < il; i ++ ) {

					const attribute = attributeArray[ i ];
					let bufferAttribute;

					if ( attribute.isInterleavedBufferAttribute ) {

						const interleavedBuffer = getInterleavedBuffer( json.data, attribute.data );
						bufferAttribute = new InterleavedBufferAttribute( interleavedBuffer, attribute.itemSize, attribute.offset, attribute.normalized );

					} else {

						const typedArray = getTypedArray( attribute.type, attribute.array );
						bufferAttribute = new BufferAttribute( typedArray, attribute.itemSize, attribute.normalized );

					}

					if ( attribute.name !== undefined ) bufferAttribute.name = attribute.name;
					array.push( bufferAttribute );

				}

				geometry.morphAttributes[ key ] = array;

			}

		}

		const morphTargetsRelative = json.data.morphTargetsRelative;

		if ( morphTargetsRelative ) {

			geometry.morphTargetsRelative = true;

		}

		const groups = json.data.groups || json.data.drawcalls || json.data.offsets;

		if ( groups !== undefined ) {

			for ( let i = 0, n = groups.length; i !== n; ++ i ) {

				const group = groups[ i ];

				geometry.addGroup( group.start, group.count, group.materialIndex );

			}

		}

		const boundingSphere = json.data.boundingSphere;

		if ( boundingSphere !== undefined ) {

			const center = new Vector3();

			if ( boundingSphere.center !== undefined ) {

				center.fromArray( boundingSphere.center );

			}

			geometry.boundingSphere = new Sphere( center, boundingSphere.radius );

		}

		if ( json.name ) geometry.name = json.name;
		if ( json.userData ) geometry.userData = json.userData;

		return geometry;

	}

}

class ObjectLoader extends Loader {

	constructor( manager ) {

		super( manager );

	}

	load( url, onLoad, onProgress, onError ) {

		const scope = this;

		const path = ( this.path === '' ) ? LoaderUtils.extractUrlBase( url ) : this.path;
		this.resourcePath = this.resourcePath || path;

		const loader = new FileLoader( this.manager );
		loader.setPath( this.path );
		loader.setRequestHeader( this.requestHeader );
		loader.setWithCredentials( this.withCredentials );
		loader.load( url, function ( text ) {

			let json = null;

			try {

				json = JSON.parse( text );

			} catch ( error ) {

				if ( onError !== undefined ) onError( error );

				console.error( 'THREE:ObjectLoader: Can\'t parse ' + url + '.', error.message );

				return;

			}

			const metadata = json.metadata;

			if ( metadata === undefined || metadata.type === undefined || metadata.type.toLowerCase() === 'geometry' ) {

				console.error( 'THREE.ObjectLoader: Can\'t load ' + url );
				return;

			}

			scope.parse( json, onLoad );

		}, onProgress, onError );

	}

	async loadAsync( url, onProgress ) {

		const scope = this;

		const path = ( this.path === '' ) ? LoaderUtils.extractUrlBase( url ) : this.path;
		this.resourcePath = this.resourcePath || path;

		const loader = new FileLoader( this.manager );
		loader.setPath( this.path );
		loader.setRequestHeader( this.requestHeader );
		loader.setWithCredentials( this.withCredentials );

		const text = await loader.loadAsync( url, onProgress );

		const json = JSON.parse( text );

		const metadata = json.metadata;

		if ( metadata === undefined || metadata.type === undefined || metadata.type.toLowerCase() === 'geometry' ) {

			throw new Error( 'THREE.ObjectLoader: Can\'t load ' + url );

		}

		return await scope.parseAsync( json );

	}

	parse( json, onLoad ) {

		const animations = this.parseAnimations( json.animations );
		const shapes = this.parseShapes( json.shapes );
		const geometries = this.parseGeometries( json.geometries, shapes );

		const images = this.parseImages( json.images, function () {

			if ( onLoad !== undefined ) onLoad( object );

		} );

		const textures = this.parseTextures( json.textures, images );
		const materials = this.parseMaterials( json.materials, textures );

		const object = this.parseObject( json.object, geometries, materials, textures, animations );
		const skeletons = this.parseSkeletons( json.skeletons, object );

		this.bindSkeletons( object, skeletons );

		//

		if ( onLoad !== undefined ) {

			let hasImages = false;

			for ( const uuid in images ) {

				if ( images[ uuid ] instanceof HTMLImageElement ) {

					hasImages = true;
					break;

				}

			}

			if ( hasImages === false ) onLoad( object );

		}

		return object;

	}

	async parseAsync( json ) {

		const animations = this.parseAnimations( json.animations );
		const shapes = this.parseShapes( json.shapes );
		const geometries = this.parseGeometries( json.geometries, shapes );

		const images = await this.parseImagesAsync( json.images );

		const textures = this.parseTextures( json.textures, images );
		const materials = this.parseMaterials( json.materials, textures );

		const object = this.parseObject( json.object, geometries, materials, textures, animations );
		const skeletons = this.parseSkeletons( json.skeletons, object );

		this.bindSkeletons( object, skeletons );

		return object;

	}

	parseShapes( json ) {

		const shapes = {};

		if ( json !== undefined ) {

			for ( let i = 0, l = json.length; i < l; i ++ ) {

				const shape = new Shape().fromJSON( json[ i ] );

				shapes[ shape.uuid ] = shape;

			}

		}

		return shapes;

	}

	parseSkeletons( json, object ) {

		const skeletons = {};
		const bones = {};

		// generate bone lookup table

		object.traverse( function ( child ) {

			if ( child.isBone ) bones[ child.uuid ] = child;

		} );

		// create skeletons

		if ( json !== undefined ) {

			for ( let i = 0, l = json.length; i < l; i ++ ) {

				const skeleton = new Skeleton().fromJSON( json[ i ], bones );

				skeletons[ skeleton.uuid ] = skeleton;

			}

		}

		return skeletons;

	}

	parseGeometries( json, shapes ) {

		const geometries = {};

		if ( json !== undefined ) {

			const bufferGeometryLoader = new BufferGeometryLoader();

			for ( let i = 0, l = json.length; i < l; i ++ ) {

				let geometry;
				const data = json[ i ];

				switch ( data.type ) {

					case 'BufferGeometry':
					case 'InstancedBufferGeometry':

						geometry = bufferGeometryLoader.parse( data );

						break;

					case 'Geometry':

						console.error( 'THREE.ObjectLoader: The legacy Geometry type is no longer supported.' );

						break;

					default:

						if ( data.type in Geometries ) {

							geometry = Geometries[ data.type ].fromJSON( data, shapes );

						} else {

							console.warn( `THREE.ObjectLoader: Unsupported geometry type "${ data.type }"` );

						}

				}

				geometry.uuid = data.uuid;

				if ( data.name !== undefined ) geometry.name = data.name;
				if ( geometry.isBufferGeometry === true && data.userData !== undefined ) geometry.userData = data.userData;

				geometries[ data.uuid ] = geometry;

			}

		}

		return geometries;

	}

	parseMaterials( json, textures ) {

		const cache = {}; // MultiMaterial
		const materials = {};

		if ( json !== undefined ) {

			const loader = new MaterialLoader();
			loader.setTextures( textures );

			for ( let i = 0, l = json.length; i < l; i ++ ) {

				const data = json[ i ];

				if ( data.type === 'MultiMaterial' ) {

					// Deprecated

					const array = [];

					for ( let j = 0; j < data.materials.length; j ++ ) {

						const material = data.materials[ j ];

						if ( cache[ material.uuid ] === undefined ) {

							cache[ material.uuid ] = loader.parse( material );

						}

						array.push( cache[ material.uuid ] );

					}

					materials[ data.uuid ] = array;

				} else {

					if ( cache[ data.uuid ] === undefined ) {

						cache[ data.uuid ] = loader.parse( data );

					}

					materials[ data.uuid ] = cache[ data.uuid ];

				}

			}

		}

		return materials;

	}

	parseAnimations( json ) {

		const animations = {};

		if ( json !== undefined ) {

			for ( let i = 0; i < json.length; i ++ ) {

				const data = json[ i ];

				const clip = AnimationClip.parse( data );

				animations[ clip.uuid ] = clip;

			}

		}

		return animations;

	}

	parseImages( json, onLoad ) {

		const scope = this;
		const images = {};

		let loader;

		function loadImage( url ) {

			scope.manager.itemStart( url );

			return loader.load( url, function () {

				scope.manager.itemEnd( url );

			}, undefined, function () {

				scope.manager.itemError( url );
				scope.manager.itemEnd( url );

			} );

		}

		function deserializeImage( image ) {

			if ( typeof image === 'string' ) {

				const url = image;

				const path = /^(\/\/)|([a-z]+:(\/\/)?)/i.test( url ) ? url : scope.resourcePath + url;

				return loadImage( path );

			} else {

				if ( image.data ) {

					return {
						data: getTypedArray( image.type, image.data ),
						width: image.width,
						height: image.height
					};

				} else {

					return null;

				}

			}

		}

		if ( json !== undefined && json.length > 0 ) {

			const manager = new LoadingManager( onLoad );

			loader = new ImageLoader( manager );
			loader.setCrossOrigin( this.crossOrigin );

			for ( let i = 0, il = json.length; i < il; i ++ ) {

				const image = json[ i ];
				const url = image.url;

				if ( Array.isArray( url ) ) {

					// load array of images e.g CubeTexture

					const imageArray = [];

					for ( let j = 0, jl = url.length; j < jl; j ++ ) {

						const currentUrl = url[ j ];

						const deserializedImage = deserializeImage( currentUrl );

						if ( deserializedImage !== null ) {

							if ( deserializedImage instanceof HTMLImageElement ) {

								imageArray.push( deserializedImage );

							} else {

								// special case: handle array of data textures for cube textures

								imageArray.push( new DataTexture( deserializedImage.data, deserializedImage.width, deserializedImage.height ) );

							}

						}

					}

					images[ image.uuid ] = new Source( imageArray );

				} else {

					// load single image

					const deserializedImage = deserializeImage( image.url );
					images[ image.uuid ] = new Source( deserializedImage );


				}

			}

		}

		return images;

	}

	async parseImagesAsync( json ) {

		const scope = this;
		const images = {};

		let loader;

		async function deserializeImage( image ) {

			if ( typeof image === 'string' ) {

				const url = image;

				const path = /^(\/\/)|([a-z]+:(\/\/)?)/i.test( url ) ? url : scope.resourcePath + url;

				return await loader.loadAsync( path );

			} else {

				if ( image.data ) {

					return {
						data: getTypedArray( image.type, image.data ),
						width: image.width,
						height: image.height
					};

				} else {

					return null;

				}

			}

		}

		if ( json !== undefined && json.length > 0 ) {

			loader = new ImageLoader( this.manager );
			loader.setCrossOrigin( this.crossOrigin );

			for ( let i = 0, il = json.length; i < il; i ++ ) {

				const image = json[ i ];
				const url = image.url;

				if ( Array.isArray( url ) ) {

					// load array of images e.g CubeTexture

					const imageArray = [];

					for ( let j = 0, jl = url.length; j < jl; j ++ ) {

						const currentUrl = url[ j ];

						const deserializedImage = await deserializeImage( currentUrl );

						if ( deserializedImage !== null ) {

							if ( deserializedImage instanceof HTMLImageElement ) {

								imageArray.push( deserializedImage );

							} else {

								// special case: handle array of data textures for cube textures

								imageArray.push( new DataTexture( deserializedImage.data, deserializedImage.width, deserializedImage.height ) );

							}

						}

					}

					images[ image.uuid ] = new Source( imageArray );

				} else {

					// load single image

					const deserializedImage = await deserializeImage( image.url );
					images[ image.uuid ] = new Source( deserializedImage );

				}

			}

		}

		return images;

	}

	parseTextures( json, images ) {

		function parseConstant( value, type ) {

			if ( typeof value === 'number' ) return value;

			console.warn( 'THREE.ObjectLoader.parseTexture: Constant should be in numeric form.', value );

			return type[ value ];

		}

		const textures = {};

		if ( json !== undefined ) {

			for ( let i = 0, l = json.length; i < l; i ++ ) {

				const data = json[ i ];

				if ( data.image === undefined ) {

					console.warn( 'THREE.ObjectLoader: No "image" specified for', data.uuid );

				}

				if ( images[ data.image ] === undefined ) {

					console.warn( 'THREE.ObjectLoader: Undefined image', data.image );

				}

				const source = images[ data.image ];
				const image = source.data;

				let texture;

				if ( Array.isArray( image ) ) {

					texture = new CubeTexture();

					if ( image.length === 6 ) texture.needsUpdate = true;

				} else {

					if ( image && image.data ) {

						texture = new DataTexture();

					} else {

						texture = new Texture();

					}

					if ( image ) texture.needsUpdate = true; // textures can have undefined image data

				}

				texture.source = source;

				texture.uuid = data.uuid;

				if ( data.name !== undefined ) texture.name = data.name;

				if ( data.mapping !== undefined ) texture.mapping = parseConstant( data.mapping, TEXTURE_MAPPING );

				if ( data.offset !== undefined ) texture.offset.fromArray( data.offset );
				if ( data.repeat !== undefined ) texture.repeat.fromArray( data.repeat );
				if ( data.center !== undefined ) texture.center.fromArray( data.center );
				if ( data.rotation !== undefined ) texture.rotation = data.rotation;

				if ( data.wrap !== undefined ) {

					texture.wrapS = parseConstant( data.wrap[ 0 ], TEXTURE_WRAPPING );
					texture.wrapT = parseConstant( data.wrap[ 1 ], TEXTURE_WRAPPING );

				}

				if ( data.format !== undefined ) texture.format = data.format;
				if ( data.type !== undefined ) texture.type = data.type;
				if ( data.encoding !== undefined ) texture.encoding = data.encoding;

				if ( data.minFilter !== undefined ) texture.minFilter = parseConstant( data.minFilter, TEXTURE_FILTER );
				if ( data.magFilter !== undefined ) texture.magFilter = parseConstant( data.magFilter, TEXTURE_FILTER );
				if ( data.anisotropy !== undefined ) texture.anisotropy = data.anisotropy;

				if ( data.flipY !== undefined ) texture.flipY = data.flipY;

				if ( data.premultiplyAlpha !== undefined ) texture.premultiplyAlpha = data.premultiplyAlpha;
				if ( data.unpackAlignment !== undefined ) texture.unpackAlignment = data.unpackAlignment;

				if ( data.userData !== undefined ) texture.userData = data.userData;

				textures[ data.uuid ] = texture;

			}

		}

		return textures;

	}

	parseObject( data, geometries, materials, textures, animations ) {

		let object;

		function getGeometry( name ) {

			if ( geometries[ name ] === undefined ) {

				console.warn( 'THREE.ObjectLoader: Undefined geometry', name );

			}

			return geometries[ name ];

		}

		function getMaterial( name ) {

			if ( name === undefined ) return undefined;

			if ( Array.isArray( name ) ) {

				const array = [];

				for ( let i = 0, l = name.length; i < l; i ++ ) {

					const uuid = name[ i ];

					if ( materials[ uuid ] === undefined ) {

						console.warn( 'THREE.ObjectLoader: Undefined material', uuid );

					}

					array.push( materials[ uuid ] );

				}

				return array;

			}

			if ( materials[ name ] === undefined ) {

				console.warn( 'THREE.ObjectLoader: Undefined material', name );

			}

			return materials[ name ];

		}

		function getTexture( uuid ) {

			if ( textures[ uuid ] === undefined ) {

				console.warn( 'THREE.ObjectLoader: Undefined texture', uuid );

			}

			return textures[ uuid ];

		}

		let geometry, material;

		switch ( data.type ) {

			case 'Scene':

				object = new Scene();

				if ( data.background !== undefined ) {

					if ( Number.isInteger( data.background ) ) {

						object.background = new Color( data.background );

					} else {

						object.background = getTexture( data.background );

					}

				}

				if ( data.environment !== undefined ) {

					object.environment = getTexture( data.environment );

				}

				if ( data.fog !== undefined ) {

					if ( data.fog.type === 'Fog' ) {

						object.fog = new Fog( data.fog.color, data.fog.near, data.fog.far );

					} else if ( data.fog.type === 'FogExp2' ) {

						object.fog = new FogExp2( data.fog.color, data.fog.density );

					}

				}

				break;

			case 'PerspectiveCamera':

				object = new PerspectiveCamera( data.fov, data.aspect, data.near, data.far );

				if ( data.focus !== undefined ) object.focus = data.focus;
				if ( data.zoom !== undefined ) object.zoom = data.zoom;
				if ( data.filmGauge !== undefined ) object.filmGauge = data.filmGauge;
				if ( data.filmOffset !== undefined ) object.filmOffset = data.filmOffset;
				if ( data.view !== undefined ) object.view = Object.assign( {}, data.view );

				break;

			case 'OrthographicCamera':

				object = new OrthographicCamera( data.left, data.right, data.top, data.bottom, data.near, data.far );

				if ( data.zoom !== undefined ) object.zoom = data.zoom;
				if ( data.view !== undefined ) object.view = Object.assign( {}, data.view );

				break;

			case 'AmbientLight':

				object = new AmbientLight( data.color, data.intensity );

				break;

			case 'DirectionalLight':

				object = new DirectionalLight( data.color, data.intensity );

				break;

			case 'PointLight':

				object = new PointLight( data.color, data.intensity, data.distance, data.decay );

				break;

			case 'RectAreaLight':

				object = new RectAreaLight( data.color, data.intensity, data.width, data.height );

				break;

			case 'SpotLight':

				object = new SpotLight( data.color, data.intensity, data.distance, data.angle, data.penumbra, data.decay );

				break;

			case 'HemisphereLight':

				object = new HemisphereLight( data.color, data.groundColor, data.intensity );

				break;

			case 'LightProbe':

				object = new LightProbe().fromJSON( data );

				break;

			case 'SkinnedMesh':

				geometry = getGeometry( data.geometry );
			 	material = getMaterial( data.material );

				object = new SkinnedMesh( geometry, material );

				if ( data.bindMode !== undefined ) object.bindMode = data.bindMode;
				if ( data.bindMatrix !== undefined ) object.bindMatrix.fromArray( data.bindMatrix );
				if ( data.skeleton !== undefined ) object.skeleton = data.skeleton;

				break;

			case 'Mesh':

				geometry = getGeometry( data.geometry );
				material = getMaterial( data.material );

				object = new Mesh( geometry, material );

				break;

			case 'InstancedMesh':

				geometry = getGeometry( data.geometry );
				material = getMaterial( data.material );
				const count = data.count;
				const instanceMatrix = data.instanceMatrix;
				const instanceColor = data.instanceColor;

				object = new InstancedMesh( geometry, material, count );
				object.instanceMatrix = new InstancedBufferAttribute( new Float32Array( instanceMatrix.array ), 16 );
				if ( instanceColor !== undefined ) object.instanceColor = new InstancedBufferAttribute( new Float32Array( instanceColor.array ), instanceColor.itemSize );

				break;

			case 'LOD':

				object = new LOD();

				break;

			case 'Line':

				object = new Line( getGeometry( data.geometry ), getMaterial( data.material ) );

				break;

			case 'LineLoop':

				object = new LineLoop( getGeometry( data.geometry ), getMaterial( data.material ) );

				break;

			case 'LineSegments':

				object = new LineSegments( getGeometry( data.geometry ), getMaterial( data.material ) );

				break;

			case 'PointCloud':
			case 'Points':

				object = new Points( getGeometry( data.geometry ), getMaterial( data.material ) );

				break;

			case 'Sprite':

				object = new Sprite( getMaterial( data.material ) );

				break;

			case 'Group':

				object = new Group();

				break;

			case 'Bone':

				object = new Bone();

				break;

			default:

				object = new Object3D();

		}

		object.uuid = data.uuid;

		if ( data.name !== undefined ) object.name = data.name;

		if ( data.matrix !== undefined ) {

			object.matrix.fromArray( data.matrix );

			if ( data.matrixAutoUpdate !== undefined ) object.matrixAutoUpdate = data.matrixAutoUpdate;
			if ( object.matrixAutoUpdate ) object.matrix.decompose( object.position, object.quaternion, object.scale );

		} else {

			if ( data.position !== undefined ) object.position.fromArray( data.position );
			if ( data.rotation !== undefined ) object.rotation.fromArray( data.rotation );
			if ( data.quaternion !== undefined ) object.quaternion.fromArray( data.quaternion );
			if ( data.scale !== undefined ) object.scale.fromArray( data.scale );

		}

		if ( data.castShadow !== undefined ) object.castShadow = data.castShadow;
		if ( data.receiveShadow !== undefined ) object.receiveShadow = data.receiveShadow;

		if ( data.shadow ) {

			if ( data.shadow.bias !== undefined ) object.shadow.bias = data.shadow.bias;
			if ( data.shadow.normalBias !== undefined ) object.shadow.normalBias = data.shadow.normalBias;
			if ( data.shadow.radius !== undefined ) object.shadow.radius = data.shadow.radius;
			if ( data.shadow.mapSize !== undefined ) object.shadow.mapSize.fromArray( data.shadow.mapSize );
			if ( data.shadow.camera !== undefined ) object.shadow.camera = this.parseObject( data.shadow.camera );

		}

		if ( data.visible !== undefined ) object.visible = data.visible;
		if ( data.frustumCulled !== undefined ) object.frustumCulled = data.frustumCulled;
		if ( data.renderOrder !== undefined ) object.renderOrder = data.renderOrder;
		if ( data.userData !== undefined ) object.userData = data.userData;
		if ( data.layers !== undefined ) object.layers.mask = data.layers;

		if ( data.children !== undefined ) {

			const children = data.children;

			for ( let i = 0; i < children.length; i ++ ) {

				object.add( this.parseObject( children[ i ], geometries, materials, textures, animations ) );

			}

		}

		if ( data.animations !== undefined ) {

			const objectAnimations = data.animations;

			for ( let i = 0; i < objectAnimations.length; i ++ ) {

				const uuid = objectAnimations[ i ];

				object.animations.push( animations[ uuid ] );

			}

		}

		if ( data.type === 'LOD' ) {

			if ( data.autoUpdate !== undefined ) object.autoUpdate = data.autoUpdate;

			const levels = data.levels;

			for ( let l = 0; l < levels.length; l ++ ) {

				const level = levels[ l ];
				const child = object.getObjectByProperty( 'uuid', level.object );

				if ( child !== undefined ) {

					object.addLevel( child, level.distance );

				}

			}

		}

		return object;

	}

	bindSkeletons( object, skeletons ) {

		if ( Object.keys( skeletons ).length === 0 ) return;

		object.traverse( function ( child ) {

			if ( child.isSkinnedMesh === true && child.skeleton !== undefined ) {

				const skeleton = skeletons[ child.skeleton ];

				if ( skeleton === undefined ) {

					console.warn( 'THREE.ObjectLoader: No skeleton found with UUID:', child.skeleton );

				} else {

					child.bind( skeleton, child.bindMatrix );

				}

			}

		} );

	}

	/* DEPRECATED */

	setTexturePath( value ) {

		console.warn( 'THREE.ObjectLoader: .setTexturePath() has been renamed to .setResourcePath().' );
		return this.setResourcePath( value );

	}

}

const TEXTURE_MAPPING = {
	UVMapping: UVMapping,
	CubeReflectionMapping: CubeReflectionMapping,
	CubeRefractionMapping: CubeRefractionMapping,
	EquirectangularReflectionMapping: EquirectangularReflectionMapping,
	EquirectangularRefractionMapping: EquirectangularRefractionMapping,
	CubeUVReflectionMapping: CubeUVReflectionMapping,
	CubeUVRefractionMapping: CubeUVRefractionMapping
};

const TEXTURE_WRAPPING = {
	RepeatWrapping: RepeatWrapping,
	ClampToEdgeWrapping: ClampToEdgeWrapping,
	MirroredRepeatWrapping: MirroredRepeatWrapping
};

const TEXTURE_FILTER = {
	NearestFilter: NearestFilter,
	NearestMipmapNearestFilter: NearestMipmapNearestFilter,
	NearestMipmapLinearFilter: NearestMipmapLinearFilter,
	LinearFilter: LinearFilter,
	LinearMipmapNearestFilter: LinearMipmapNearestFilter,
	LinearMipmapLinearFilter: LinearMipmapLinearFilter
};

class ImageBitmapLoader extends Loader {

	constructor( manager ) {

		super( manager );

		if ( typeof createImageBitmap === 'undefined' ) {

			console.warn( 'THREE.ImageBitmapLoader: createImageBitmap() not supported.' );

		}

		if ( typeof fetch === 'undefined' ) {

			console.warn( 'THREE.ImageBitmapLoader: fetch() not supported.' );

		}

		this.options = { premultiplyAlpha: 'none' };

	}

	setOptions( options ) {

		this.options = options;

		return this;

	}

	load( url, onLoad, onProgress, onError ) {

		if ( url === undefined ) url = '';

		if ( this.path !== undefined ) url = this.path + url;

		url = this.manager.resolveURL( url );

		const scope = this;

		const cached = Cache.get( url );

		if ( cached !== undefined ) {

			scope.manager.itemStart( url );

			setTimeout( function () {

				if ( onLoad ) onLoad( cached );

				scope.manager.itemEnd( url );

			}, 0 );

			return cached;

		}

		const fetchOptions = {};
		fetchOptions.credentials = ( this.crossOrigin === 'anonymous' ) ? 'same-origin' : 'include';
		fetchOptions.headers = this.requestHeader;

		fetch( url, fetchOptions ).then( function ( res ) {

			return res.blob();

		} ).then( function ( blob ) {

			return createImageBitmap( blob, Object.assign( scope.options, { colorSpaceConversion: 'none' } ) );

		} ).then( function ( imageBitmap ) {

			Cache.add( url, imageBitmap );

			if ( onLoad ) onLoad( imageBitmap );

			scope.manager.itemEnd( url );

		} ).catch( function ( e ) {

			if ( onError ) onError( e );

			scope.manager.itemError( url );
			scope.manager.itemEnd( url );

		} );

		scope.manager.itemStart( url );

	}

}

ImageBitmapLoader.prototype.isImageBitmapLoader = true;

let _context;

const AudioContext = {

	getContext: function () {

		if ( _context === undefined ) {

			_context = new ( window.AudioContext || window.webkitAudioContext )();

		}

		return _context;

	},

	setContext: function ( value ) {

		_context = value;

	}

};

class AudioLoader extends Loader {

	constructor( manager ) {

		super( manager );

	}

	load( url, onLoad, onProgress, onError ) {

		const scope = this;

		const loader = new FileLoader( this.manager );
		loader.setResponseType( 'arraybuffer' );
		loader.setPath( this.path );
		loader.setRequestHeader( this.requestHeader );
		loader.setWithCredentials( this.withCredentials );
		loader.load( url, function ( buffer ) {

			try {

				// Create a copy of the buffer. The `decodeAudioData` method
				// detaches the buffer when complete, preventing reuse.
				const bufferCopy = buffer.slice( 0 );

				const context = AudioContext.getContext();
				context.decodeAudioData( bufferCopy, function ( audioBuffer ) {

					onLoad( audioBuffer );

				} );

			} catch ( e ) {

				if ( onError ) {

					onError( e );

				} else {

					console.error( e );

				}

				scope.manager.itemError( url );

			}

		}, onProgress, onError );

	}

}

class HemisphereLightProbe extends LightProbe {

	constructor( skyColor, groundColor, intensity = 1 ) {

		super( undefined, intensity );

		const color1 = new Color().set( skyColor );
		const color2 = new Color().set( groundColor );

		const sky = new Vector3( color1.r, color1.g, color1.b );
		const ground = new Vector3( color2.r, color2.g, color2.b );

		// without extra factor of PI in the shader, should = 1 / Math.sqrt( Math.PI );
		const c0 = Math.sqrt( Math.PI );
		const c1 = c0 * Math.sqrt( 0.75 );

		this.sh.coefficients[ 0 ].copy( sky ).add( ground ).multiplyScalar( c0 );
		this.sh.coefficients[ 1 ].copy( sky ).sub( ground ).multiplyScalar( c1 );

	}

}

HemisphereLightProbe.prototype.isHemisphereLightProbe = true;

class AmbientLightProbe extends LightProbe {

	constructor( color, intensity = 1 ) {

		super( undefined, intensity );

		const color1 = new Color().set( color );

		// without extra factor of PI in the shader, would be 2 / Math.sqrt( Math.PI );
		this.sh.coefficients[ 0 ].set( color1.r, color1.g, color1.b ).multiplyScalar( 2 * Math.sqrt( Math.PI ) );

	}

}

AmbientLightProbe.prototype.isAmbientLightProbe = true;

const _eyeRight = /*@__PURE__*/ new Matrix4();
const _eyeLeft = /*@__PURE__*/ new Matrix4();
const _projectionMatrix = /*@__PURE__*/ new Matrix4();

class StereoCamera {

	constructor() {

		this.type = 'StereoCamera';

		this.aspect = 1;

		this.eyeSep = 0.064;

		this.cameraL = new PerspectiveCamera();
		this.cameraL.layers.enable( 1 );
		this.cameraL.matrixAutoUpdate = false;

		this.cameraR = new PerspectiveCamera();
		this.cameraR.layers.enable( 2 );
		this.cameraR.matrixAutoUpdate = false;

		this._cache = {
			focus: null,
			fov: null,
			aspect: null,
			near: null,
			far: null,
			zoom: null,
			eyeSep: null
		};

	}

	update( camera ) {

		const cache = this._cache;

		const needsUpdate = cache.focus !== camera.focus || cache.fov !== camera.fov ||
			cache.aspect !== camera.aspect * this.aspect || cache.near !== camera.near ||
			cache.far !== camera.far || cache.zoom !== camera.zoom || cache.eyeSep !== this.eyeSep;

		if ( needsUpdate ) {

			cache.focus = camera.focus;
			cache.fov = camera.fov;
			cache.aspect = camera.aspect * this.aspect;
			cache.near = camera.near;
			cache.far = camera.far;
			cache.zoom = camera.zoom;
			cache.eyeSep = this.eyeSep;

			// Off-axis stereoscopic effect based on
			// http://paulbourke.net/stereographics/stereorender/

			_projectionMatrix.copy( camera.projectionMatrix );
			const eyeSepHalf = cache.eyeSep / 2;
			const eyeSepOnProjection = eyeSepHalf * cache.near / cache.focus;
			const ymax = ( cache.near * Math.tan( DEG2RAD * cache.fov * 0.5 ) ) / cache.zoom;
			let xmin, xmax;

			// translate xOffset

			_eyeLeft.elements[ 12 ] = - eyeSepHalf;
			_eyeRight.elements[ 12 ] = eyeSepHalf;

			// for left eye

			xmin = - ymax * cache.aspect + eyeSepOnProjection;
			xmax = ymax * cache.aspect + eyeSepOnProjection;

			_projectionMatrix.elements[ 0 ] = 2 * cache.near / ( xmax - xmin );
			_projectionMatrix.elements[ 8 ] = ( xmax + xmin ) / ( xmax - xmin );

			this.cameraL.projectionMatrix.copy( _projectionMatrix );

			// for right eye

			xmin = - ymax * cache.aspect - eyeSepOnProjection;
			xmax = ymax * cache.aspect - eyeSepOnProjection;

			_projectionMatrix.elements[ 0 ] = 2 * cache.near / ( xmax - xmin );
			_projectionMatrix.elements[ 8 ] = ( xmax + xmin ) / ( xmax - xmin );

			this.cameraR.projectionMatrix.copy( _projectionMatrix );

		}

		this.cameraL.matrixWorld.copy( camera.matrixWorld ).multiply( _eyeLeft );
		this.cameraR.matrixWorld.copy( camera.matrixWorld ).multiply( _eyeRight );

	}

}

class Clock {

	constructor( autoStart = true ) {

		this.autoStart = autoStart;

		this.startTime = 0;
		this.oldTime = 0;
		this.elapsedTime = 0;

		this.running = false;

	}

	start() {

		this.startTime = now();

		this.oldTime = this.startTime;
		this.elapsedTime = 0;
		this.running = true;

	}

	stop() {

		this.getElapsedTime();
		this.running = false;
		this.autoStart = false;

	}

	getElapsedTime() {

		this.getDelta();
		return this.elapsedTime;

	}

	getDelta() {

		let diff = 0;

		if ( this.autoStart && ! this.running ) {

			this.start();
			return 0;

		}

		if ( this.running ) {

			const newTime = now();

			diff = ( newTime - this.oldTime ) / 1000;
			this.oldTime = newTime;

			this.elapsedTime += diff;

		}

		return diff;

	}

}

function now() {

	return ( typeof performance === 'undefined' ? Date : performance ).now(); // see #10732

}

const _position$1 = /*@__PURE__*/ new Vector3();
const _quaternion$1 = /*@__PURE__*/ new Quaternion();
const _scale$1 = /*@__PURE__*/ new Vector3();
const _orientation$1 = /*@__PURE__*/ new Vector3();

class AudioListener extends Object3D {

	constructor() {

		super();

		this.type = 'AudioListener';

		this.context = AudioContext.getContext();

		this.gain = this.context.createGain();
		this.gain.connect( this.context.destination );

		this.filter = null;

		this.timeDelta = 0;

		// private

		this._clock = new Clock();

	}

	getInput() {

		return this.gain;

	}

	removeFilter() {

		if ( this.filter !== null ) {

			this.gain.disconnect( this.filter );
			this.filter.disconnect( this.context.destination );
			this.gain.connect( this.context.destination );
			this.filter = null;

		}

		return this;

	}

	getFilter() {

		return this.filter;

	}

	setFilter( value ) {

		if ( this.filter !== null ) {

			this.gain.disconnect( this.filter );
			this.filter.disconnect( this.context.destination );

		} else {

			this.gain.disconnect( this.context.destination );

		}

		this.filter = value;
		this.gain.connect( this.filter );
		this.filter.connect( this.context.destination );

		return this;

	}

	getMasterVolume() {

		return this.gain.gain.value;

	}

	setMasterVolume( value ) {

		this.gain.gain.setTargetAtTime( value, this.context.currentTime, 0.01 );

		return this;

	}

	updateMatrixWorld( force ) {

		super.updateMatrixWorld( force );

		const listener = this.context.listener;
		const up = this.up;

		this.timeDelta = this._clock.getDelta();

		this.matrixWorld.decompose( _position$1, _quaternion$1, _scale$1 );

		_orientation$1.set( 0, 0, - 1 ).applyQuaternion( _quaternion$1 );

		if ( listener.positionX ) {

			// code path for Chrome (see #14393)

			const endTime = this.context.currentTime + this.timeDelta;

			listener.positionX.linearRampToValueAtTime( _position$1.x, endTime );
			listener.positionY.linearRampToValueAtTime( _position$1.y, endTime );
			listener.positionZ.linearRampToValueAtTime( _position$1.z, endTime );
			listener.forwardX.linearRampToValueAtTime( _orientation$1.x, endTime );
			listener.forwardY.linearRampToValueAtTime( _orientation$1.y, endTime );
			listener.forwardZ.linearRampToValueAtTime( _orientation$1.z, endTime );
			listener.upX.linearRampToValueAtTime( up.x, endTime );
			listener.upY.linearRampToValueAtTime( up.y, endTime );
			listener.upZ.linearRampToValueAtTime( up.z, endTime );

		} else {

			listener.setPosition( _position$1.x, _position$1.y, _position$1.z );
			listener.setOrientation( _orientation$1.x, _orientation$1.y, _orientation$1.z, up.x, up.y, up.z );

		}

	}

}

class Audio extends Object3D {

	constructor( listener ) {

		super();

		this.type = 'Audio';

		this.listener = listener;
		this.context = listener.context;

		this.gain = this.context.createGain();
		this.gain.connect( listener.getInput() );

		this.autoplay = false;

		this.buffer = null;
		this.detune = 0;
		this.loop = false;
		this.loopStart = 0;
		this.loopEnd = 0;
		this.offset = 0;
		this.duration = undefined;
		this.playbackRate = 1;
		this.isPlaying = false;
		this.hasPlaybackControl = true;
		this.source = null;
		this.sourceType = 'empty';

		this._startedAt = 0;
		this._progress = 0;
		this._connected = false;

		this.filters = [];

	}

	getOutput() {

		return this.gain;

	}

	setNodeSource( audioNode ) {

		this.hasPlaybackControl = false;
		this.sourceType = 'audioNode';
		this.source = audioNode;
		this.connect();

		return this;

	}

	setMediaElementSource( mediaElement ) {

		this.hasPlaybackControl = false;
		this.sourceType = 'mediaNode';
		this.source = this.context.createMediaElementSource( mediaElement );
		this.connect();

		return this;

	}

	setMediaStreamSource( mediaStream ) {

		this.hasPlaybackControl = false;
		this.sourceType = 'mediaStreamNode';
		this.source = this.context.createMediaStreamSource( mediaStream );
		this.connect();

		return this;

	}

	setBuffer( audioBuffer ) {

		this.buffer = audioBuffer;
		this.sourceType = 'buffer';

		if ( this.autoplay ) this.play();

		return this;

	}

	play( delay = 0 ) {

		if ( this.isPlaying === true ) {

			console.warn( 'THREE.Audio: Audio is already playing.' );
			return;

		}

		if ( this.hasPlaybackControl === false ) {

			console.warn( 'THREE.Audio: this Audio has no playback control.' );
			return;

		}

		this._startedAt = this.context.currentTime + delay;

		const source = this.context.createBufferSource();
		source.buffer = this.buffer;
		source.loop = this.loop;
		source.loopStart = this.loopStart;
		source.loopEnd = this.loopEnd;
		source.onended = this.onEnded.bind( this );
		source.start( this._startedAt, this._progress + this.offset, this.duration );

		this.isPlaying = true;

		this.source = source;

		this.setDetune( this.detune );
		this.setPlaybackRate( this.playbackRate );

		return this.connect();

	}

	pause() {

		if ( this.hasPlaybackControl === false ) {

			console.warn( 'THREE.Audio: this Audio has no playback control.' );
			return;

		}

		if ( this.isPlaying === true ) {

			// update current progress

			this._progress += Math.max( this.context.currentTime - this._startedAt, 0 ) * this.playbackRate;

			if ( this.loop === true ) {

				// ensure _progress does not exceed duration with looped audios

				this._progress = this._progress % ( this.duration || this.buffer.duration );

			}

			this.source.stop();
			this.source.onended = null;

			this.isPlaying = false;

		}

		return this;

	}

	stop() {

		if ( this.hasPlaybackControl === false ) {

			console.warn( 'THREE.Audio: this Audio has no playback control.' );
			return;

		}

		this._progress = 0;

		this.source.stop();
		this.source.onended = null;
		this.isPlaying = false;

		return this;

	}

	connect() {

		if ( this.filters.length > 0 ) {

			this.source.connect( this.filters[ 0 ] );

			for ( let i = 1, l = this.filters.length; i < l; i ++ ) {

				this.filters[ i - 1 ].connect( this.filters[ i ] );

			}

			this.filters[ this.filters.length - 1 ].connect( this.getOutput() );

		} else {

			this.source.connect( this.getOutput() );

		}

		this._connected = true;

		return this;

	}

	disconnect() {

		if ( this.filters.length > 0 ) {

			this.source.disconnect( this.filters[ 0 ] );

			for ( let i = 1, l = this.filters.length; i < l; i ++ ) {

				this.filters[ i - 1 ].disconnect( this.filters[ i ] );

			}

			this.filters[ this.filters.length - 1 ].disconnect( this.getOutput() );

		} else {

			this.source.disconnect( this.getOutput() );

		}

		this._connected = false;

		return this;

	}

	getFilters() {

		return this.filters;

	}

	setFilters( value ) {

		if ( ! value ) value = [];

		if ( this._connected === true ) {

			this.disconnect();
			this.filters = value.slice();
			this.connect();

		} else {

			this.filters = value.slice();

		}

		return this;

	}

	setDetune( value ) {

		this.detune = value;

		if ( this.source.detune === undefined ) return; // only set detune when available

		if ( this.isPlaying === true ) {

			this.source.detune.setTargetAtTime( this.detune, this.context.currentTime, 0.01 );

		}

		return this;

	}

	getDetune() {

		return this.detune;

	}

	getFilter() {

		return this.getFilters()[ 0 ];

	}

	setFilter( filter ) {

		return this.setFilters( filter ? [ filter ] : [] );

	}

	setPlaybackRate( value ) {

		if ( this.hasPlaybackControl === false ) {

			console.warn( 'THREE.Audio: this Audio has no playback control.' );
			return;

		}

		this.playbackRate = value;

		if ( this.isPlaying === true ) {

			this.source.playbackRate.setTargetAtTime( this.playbackRate, this.context.currentTime, 0.01 );

		}

		return this;

	}

	getPlaybackRate() {

		return this.playbackRate;

	}

	onEnded() {

		this.isPlaying = false;

	}

	getLoop() {

		if ( this.hasPlaybackControl === false ) {

			console.warn( 'THREE.Audio: this Audio has no playback control.' );
			return false;

		}

		return this.loop;

	}

	setLoop( value ) {

		if ( this.hasPlaybackControl === false ) {

			console.warn( 'THREE.Audio: this Audio has no playback control.' );
			return;

		}

		this.loop = value;

		if ( this.isPlaying === true ) {

			this.source.loop = this.loop;

		}

		return this;

	}

	setLoopStart( value ) {

		this.loopStart = value;

		return this;

	}

	setLoopEnd( value ) {

		this.loopEnd = value;

		return this;

	}

	getVolume() {

		return this.gain.gain.value;

	}

	setVolume( value ) {

		this.gain.gain.setTargetAtTime( value, this.context.currentTime, 0.01 );

		return this;

	}

}

const _position = /*@__PURE__*/ new Vector3();
const _quaternion = /*@__PURE__*/ new Quaternion();
const _scale = /*@__PURE__*/ new Vector3();
const _orientation = /*@__PURE__*/ new Vector3();

class PositionalAudio extends Audio {

	constructor( listener ) {

		super( listener );

		this.panner = this.context.createPanner();
		this.panner.panningModel = 'HRTF';
		this.panner.connect( this.gain );

	}

	getOutput() {

		return this.panner;

	}

	getRefDistance() {

		return this.panner.refDistance;

	}

	setRefDistance( value ) {

		this.panner.refDistance = value;

		return this;

	}

	getRolloffFactor() {

		return this.panner.rolloffFactor;

	}

	setRolloffFactor( value ) {

		this.panner.rolloffFactor = value;

		return this;

	}

	getDistanceModel() {

		return this.panner.distanceModel;

	}

	setDistanceModel( value ) {

		this.panner.distanceModel = value;

		return this;

	}

	getMaxDistance() {

		return this.panner.maxDistance;

	}

	setMaxDistance( value ) {

		this.panner.maxDistance = value;

		return this;

	}

	setDirectionalCone( coneInnerAngle, coneOuterAngle, coneOuterGain ) {

		this.panner.coneInnerAngle = coneInnerAngle;
		this.panner.coneOuterAngle = coneOuterAngle;
		this.panner.coneOuterGain = coneOuterGain;

		return this;

	}

	updateMatrixWorld( force ) {

		super.updateMatrixWorld( force );

		if ( this.hasPlaybackControl === true && this.isPlaying === false ) return;

		this.matrixWorld.decompose( _position, _quaternion, _scale );

		_orientation.set( 0, 0, 1 ).applyQuaternion( _quaternion );

		const panner = this.panner;

		if ( panner.positionX ) {

			// code path for Chrome and Firefox (see #14393)

			const endTime = this.context.currentTime + this.listener.timeDelta;

			panner.positionX.linearRampToValueAtTime( _position.x, endTime );
			panner.positionY.linearRampToValueAtTime( _position.y, endTime );
			panner.positionZ.linearRampToValueAtTime( _position.z, endTime );
			panner.orientationX.linearRampToValueAtTime( _orientation.x, endTime );
			panner.orientationY.linearRampToValueAtTime( _orientation.y, endTime );
			panner.orientationZ.linearRampToValueAtTime( _orientation.z, endTime );

		} else {

			panner.setPosition( _position.x, _position.y, _position.z );
			panner.setOrientation( _orientation.x, _orientation.y, _orientation.z );

		}

	}

}

class AudioAnalyser {

	constructor( audio, fftSize = 2048 ) {

		this.analyser = audio.context.createAnalyser();
		this.analyser.fftSize = fftSize;

		this.data = new Uint8Array( this.analyser.frequencyBinCount );

		audio.getOutput().connect( this.analyser );

	}


	getFrequencyData() {

		this.analyser.getByteFrequencyData( this.data );

		return this.data;

	}

	getAverageFrequency() {

		let value = 0;
		const data = this.getFrequencyData();

		for ( let i = 0; i < data.length; i ++ ) {

			value += data[ i ];

		}

		return value / data.length;

	}

}

class PropertyMixer {

	constructor( binding, typeName, valueSize ) {

		this.binding = binding;
		this.valueSize = valueSize;

		let mixFunction,
			mixFunctionAdditive,
			setIdentity;

		// buffer layout: [ incoming | accu0 | accu1 | orig | addAccu | (optional work) ]
		//
		// interpolators can use .buffer as their .result
		// the data then goes to 'incoming'
		//
		// 'accu0' and 'accu1' are used frame-interleaved for
		// the cumulative result and are compared to detect
		// changes
		//
		// 'orig' stores the original state of the property
		//
		// 'add' is used for additive cumulative results
		//
		// 'work' is optional and is only present for quaternion types. It is used
		// to store intermediate quaternion multiplication results

		switch ( typeName ) {

			case 'quaternion':
				mixFunction = this._slerp;
				mixFunctionAdditive = this._slerpAdditive;
				setIdentity = this._setAdditiveIdentityQuaternion;

				this.buffer = new Float64Array( valueSize * 6 );
				this._workIndex = 5;
				break;

			case 'string':
			case 'bool':
				mixFunction = this._select;

				// Use the regular mix function and for additive on these types,
				// additive is not relevant for non-numeric types
				mixFunctionAdditive = this._select;

				setIdentity = this._setAdditiveIdentityOther;

				this.buffer = new Array( valueSize * 5 );
				break;

			default:
				mixFunction = this._lerp;
				mixFunctionAdditive = this._lerpAdditive;
				setIdentity = this._setAdditiveIdentityNumeric;

				this.buffer = new Float64Array( valueSize * 5 );

		}

		this._mixBufferRegion = mixFunction;
		this._mixBufferRegionAdditive = mixFunctionAdditive;
		this._setIdentity = setIdentity;
		this._origIndex = 3;
		this._addIndex = 4;

		this.cumulativeWeight = 0;
		this.cumulativeWeightAdditive = 0;

		this.useCount = 0;
		this.referenceCount = 0;

	}

	// accumulate data in the 'incoming' region into 'accu<i>'
	accumulate( accuIndex, weight ) {

		// note: happily accumulating nothing when weight = 0, the caller knows
		// the weight and shouldn't have made the call in the first place

		const buffer = this.buffer,
			stride = this.valueSize,
			offset = accuIndex * stride + stride;

		let currentWeight = this.cumulativeWeight;

		if ( currentWeight === 0 ) {

			// accuN := incoming * weight

			for ( let i = 0; i !== stride; ++ i ) {

				buffer[ offset + i ] = buffer[ i ];

			}

			currentWeight = weight;

		} else {

			// accuN := accuN + incoming * weight

			currentWeight += weight;
			const mix = weight / currentWeight;
			this._mixBufferRegion( buffer, offset, 0, mix, stride );

		}

		this.cumulativeWeight = currentWeight;

	}

	// accumulate data in the 'incoming' region into 'add'
	accumulateAdditive( weight ) {

		const buffer = this.buffer,
			stride = this.valueSize,
			offset = stride * this._addIndex;

		if ( this.cumulativeWeightAdditive === 0 ) {

			// add = identity

			this._setIdentity();

		}

		// add := add + incoming * weight

		this._mixBufferRegionAdditive( buffer, offset, 0, weight, stride );
		this.cumulativeWeightAdditive += weight;

	}

	// apply the state of 'accu<i>' to the binding when accus differ
	apply( accuIndex ) {

		const stride = this.valueSize,
			buffer = this.buffer,
			offset = accuIndex * stride + stride,

			weight = this.cumulativeWeight,
			weightAdditive = this.cumulativeWeightAdditive,

			binding = this.binding;

		this.cumulativeWeight = 0;
		this.cumulativeWeightAdditive = 0;

		if ( weight < 1 ) {

			// accuN := accuN + original * ( 1 - cumulativeWeight )

			const originalValueOffset = stride * this._origIndex;

			this._mixBufferRegion(
				buffer, offset, originalValueOffset, 1 - weight, stride );

		}

		if ( weightAdditive > 0 ) {

			// accuN := accuN + additive accuN

			this._mixBufferRegionAdditive( buffer, offset, this._addIndex * stride, 1, stride );

		}

		for ( let i = stride, e = stride + stride; i !== e; ++ i ) {

			if ( buffer[ i ] !== buffer[ i + stride ] ) {

				// value has changed -> update scene graph

				binding.setValue( buffer, offset );
				break;

			}

		}

	}

	// remember the state of the bound property and copy it to both accus
	saveOriginalState() {

		const binding = this.binding;

		const buffer = this.buffer,
			stride = this.valueSize,

			originalValueOffset = stride * this._origIndex;

		binding.getValue( buffer, originalValueOffset );

		// accu[0..1] := orig -- initially detect changes against the original
		for ( let i = stride, e = originalValueOffset; i !== e; ++ i ) {

			buffer[ i ] = buffer[ originalValueOffset + ( i % stride ) ];

		}

		// Add to identity for additive
		this._setIdentity();

		this.cumulativeWeight = 0;
		this.cumulativeWeightAdditive = 0;

	}

	// apply the state previously taken via 'saveOriginalState' to the binding
	restoreOriginalState() {

		const originalValueOffset = this.valueSize * 3;
		this.binding.setValue( this.buffer, originalValueOffset );

	}

	_setAdditiveIdentityNumeric() {

		const startIndex = this._addIndex * this.valueSize;
		const endIndex = startIndex + this.valueSize;

		for ( let i = startIndex; i < endIndex; i ++ ) {

			this.buffer[ i ] = 0;

		}

	}

	_setAdditiveIdentityQuaternion() {

		this._setAdditiveIdentityNumeric();
		this.buffer[ this._addIndex * this.valueSize + 3 ] = 1;

	}

	_setAdditiveIdentityOther() {

		const startIndex = this._origIndex * this.valueSize;
		const targetIndex = this._addIndex * this.valueSize;

		for ( let i = 0; i < this.valueSize; i ++ ) {

			this.buffer[ targetIndex + i ] = this.buffer[ startIndex + i ];

		}

	}


	// mix functions

	_select( buffer, dstOffset, srcOffset, t, stride ) {

		if ( t >= 0.5 ) {

			for ( let i = 0; i !== stride; ++ i ) {

				buffer[ dstOffset + i ] = buffer[ srcOffset + i ];

			}

		}

	}

	_slerp( buffer, dstOffset, srcOffset, t ) {

		Quaternion.slerpFlat( buffer, dstOffset, buffer, dstOffset, buffer, srcOffset, t );

	}

	_slerpAdditive( buffer, dstOffset, srcOffset, t, stride ) {

		const workOffset = this._workIndex * stride;

		// Store result in intermediate buffer offset
		Quaternion.multiplyQuaternionsFlat( buffer, workOffset, buffer, dstOffset, buffer, srcOffset );

		// Slerp to the intermediate result
		Quaternion.slerpFlat( buffer, dstOffset, buffer, dstOffset, buffer, workOffset, t );

	}

	_lerp( buffer, dstOffset, srcOffset, t, stride ) {

		const s = 1 - t;

		for ( let i = 0; i !== stride; ++ i ) {

			const j = dstOffset + i;

			buffer[ j ] = buffer[ j ] * s + buffer[ srcOffset + i ] * t;

		}

	}

	_lerpAdditive( buffer, dstOffset, srcOffset, t, stride ) {

		for ( let i = 0; i !== stride; ++ i ) {

			const j = dstOffset + i;

			buffer[ j ] = buffer[ j ] + buffer[ srcOffset + i ] * t;

		}

	}

}

// Characters [].:/ are reserved for track binding syntax.
const _RESERVED_CHARS_RE = '\\[\\]\\.:\\/';
const _reservedRe = new RegExp( '[' + _RESERVED_CHARS_RE + ']', 'g' );

// Attempts to allow node names from any language. ES5's `\w` regexp matches
// only latin characters, and the unicode \p{L} is not yet supported. So
// instead, we exclude reserved characters and match everything else.
const _wordChar = '[^' + _RESERVED_CHARS_RE + ']';
const _wordCharOrDot = '[^' + _RESERVED_CHARS_RE.replace( '\\.', '' ) + ']';

// Parent directories, delimited by '/' or ':'. Currently unused, but must
// be matched to parse the rest of the track name.
const _directoryRe = /((?:WC+[\/:])*)/.source.replace( 'WC', _wordChar );

// Target node. May contain word characters (a-zA-Z0-9_) and '.' or '-'.
const _nodeRe = /(WCOD+)?/.source.replace( 'WCOD', _wordCharOrDot );

// Object on target node, and accessor. May not contain reserved
// characters. Accessor may contain any character except closing bracket.
const _objectRe = /(?:\.(WC+)(?:\[(.+)\])?)?/.source.replace( 'WC', _wordChar );

// Property and accessor. May not contain reserved characters. Accessor may
// contain any non-bracket characters.
const _propertyRe = /\.(WC+)(?:\[(.+)\])?/.source.replace( 'WC', _wordChar );

const _trackRe = new RegExp( ''
	+ '^'
	+ _directoryRe
	+ _nodeRe
	+ _objectRe
	+ _propertyRe
	+ '$'
);

const _supportedObjectNames = [ 'material', 'materials', 'bones' ];

class Composite {

	constructor( targetGroup, path, optionalParsedPath ) {

		const parsedPath = optionalParsedPath || PropertyBinding.parseTrackName( path );

		this._targetGroup = targetGroup;
		this._bindings = targetGroup.subscribe_( path, parsedPath );

	}

	getValue( array, offset ) {

		this.bind(); // bind all binding

		const firstValidIndex = this._targetGroup.nCachedObjects_,
			binding = this._bindings[ firstValidIndex ];

		// and only call .getValue on the first
		if ( binding !== undefined ) binding.getValue( array, offset );

	}

	setValue( array, offset ) {

		const bindings = this._bindings;

		for ( let i = this._targetGroup.nCachedObjects_, n = bindings.length; i !== n; ++ i ) {

			bindings[ i ].setValue( array, offset );

		}

	}

	bind() {

		const bindings = this._bindings;

		for ( let i = this._targetGroup.nCachedObjects_, n = bindings.length; i !== n; ++ i ) {

			bindings[ i ].bind();

		}

	}

	unbind() {

		const bindings = this._bindings;

		for ( let i = this._targetGroup.nCachedObjects_, n = bindings.length; i !== n; ++ i ) {

			bindings[ i ].unbind();

		}

	}

}

// Note: This class uses a State pattern on a per-method basis:
// 'bind' sets 'this.getValue' / 'setValue' and shadows the
// prototype version of these methods with one that represents
// the bound state. When the property is not found, the methods
// become no-ops.
class PropertyBinding {

	constructor( rootNode, path, parsedPath ) {

		this.path = path;
		this.parsedPath = parsedPath || PropertyBinding.parseTrackName( path );

		this.node = PropertyBinding.findNode( rootNode, this.parsedPath.nodeName ) || rootNode;

		this.rootNode = rootNode;

		// initial state of these methods that calls 'bind'
		this.getValue = this._getValue_unbound;
		this.setValue = this._setValue_unbound;

	}


	static create( root, path, parsedPath ) {

		if ( ! ( root && root.isAnimationObjectGroup ) ) {

			return new PropertyBinding( root, path, parsedPath );

		} else {

			return new PropertyBinding.Composite( root, path, parsedPath );

		}

	}

	/**
	 * Replaces spaces with underscores and removes unsupported characters from
	 * node names, to ensure compatibility with parseTrackName().
	 *
	 * @param {string} name Node name to be sanitized.
	 * @return {string}
	 */
	static sanitizeNodeName( name ) {

		return name.replace( /\s/g, '_' ).replace( _reservedRe, '' );

	}

	static parseTrackName( trackName ) {

		const matches = _trackRe.exec( trackName );

		if ( matches === null ) {

			throw new Error( 'PropertyBinding: Cannot parse trackName: ' + trackName );

		}

		const results = {
			// directoryName: matches[ 1 ], // (tschw) currently unused
			nodeName: matches[ 2 ],
			objectName: matches[ 3 ],
			objectIndex: matches[ 4 ],
			propertyName: matches[ 5 ], // required
			propertyIndex: matches[ 6 ]
		};

		const lastDot = results.nodeName && results.nodeName.lastIndexOf( '.' );

		if ( lastDot !== undefined && lastDot !== - 1 ) {

			const objectName = results.nodeName.substring( lastDot + 1 );

			// Object names must be checked against an allowlist. Otherwise, there
			// is no way to parse 'foo.bar.baz': 'baz' must be a property, but
			// 'bar' could be the objectName, or part of a nodeName (which can
			// include '.' characters).
			if ( _supportedObjectNames.indexOf( objectName ) !== - 1 ) {

				results.nodeName = results.nodeName.substring( 0, lastDot );
				results.objectName = objectName;

			}

		}

		if ( results.propertyName === null || results.propertyName.length === 0 ) {

			throw new Error( 'PropertyBinding: can not parse propertyName from trackName: ' + trackName );

		}

		return results;

	}

	static findNode( root, nodeName ) {

		if ( nodeName === undefined || nodeName === '' || nodeName === '.' || nodeName === - 1 || nodeName === root.name || nodeName === root.uuid ) {

			return root;

		}

		// search into skeleton bones.
		if ( root.skeleton ) {

			const bone = root.skeleton.getBoneByName( nodeName );

			if ( bone !== undefined ) {

				return bone;

			}

		}

		// search into node subtree.
		if ( root.children ) {

			const searchNodeSubtree = function ( children ) {

				for ( let i = 0; i < children.length; i ++ ) {

					const childNode = children[ i ];

					if ( childNode.name === nodeName || childNode.uuid === nodeName ) {

						return childNode;

					}

					const result = searchNodeSubtree( childNode.children );

					if ( result ) return result;

				}

				return null;

			};

			const subTreeNode = searchNodeSubtree( root.children );

			if ( subTreeNode ) {

				return subTreeNode;

			}

		}

		return null;

	}

	// these are used to "bind" a nonexistent property
	_getValue_unavailable() {}
	_setValue_unavailable() {}

	// Getters

	_getValue_direct( buffer, offset ) {

		buffer[ offset ] = this.targetObject[ this.propertyName ];

	}

	_getValue_array( buffer, offset ) {

		const source = this.resolvedProperty;

		for ( let i = 0, n = source.length; i !== n; ++ i ) {

			buffer[ offset ++ ] = source[ i ];

		}

	}

	_getValue_arrayElement( buffer, offset ) {

		buffer[ offset ] = this.resolvedProperty[ this.propertyIndex ];

	}

	_getValue_toArray( buffer, offset ) {

		this.resolvedProperty.toArray( buffer, offset );

	}

	// Direct

	_setValue_direct( buffer, offset ) {

		this.targetObject[ this.propertyName ] = buffer[ offset ];

	}

	_setValue_direct_setNeedsUpdate( buffer, offset ) {

		this.targetObject[ this.propertyName ] = buffer[ offset ];
		this.targetObject.needsUpdate = true;

	}

	_setValue_direct_setMatrixWorldNeedsUpdate( buffer, offset ) {

		this.targetObject[ this.propertyName ] = buffer[ offset ];
		this.targetObject.matrixWorldNeedsUpdate = true;

	}

	// EntireArray

	_setValue_array( buffer, offset ) {

		const dest = this.resolvedProperty;

		for ( let i = 0, n = dest.length; i !== n; ++ i ) {

			dest[ i ] = buffer[ offset ++ ];

		}

	}

	_setValue_array_setNeedsUpdate( buffer, offset ) {

		const dest = this.resolvedProperty;

		for ( let i = 0, n = dest.length; i !== n; ++ i ) {

			dest[ i ] = buffer[ offset ++ ];

		}

		this.targetObject.needsUpdate = true;

	}

	_setValue_array_setMatrixWorldNeedsUpdate( buffer, offset ) {

		const dest = this.resolvedProperty;

		for ( let i = 0, n = dest.length; i !== n; ++ i ) {

			dest[ i ] = buffer[ offset ++ ];

		}

		this.targetObject.matrixWorldNeedsUpdate = true;

	}

	// ArrayElement

	_setValue_arrayElement( buffer, offset ) {

		this.resolvedProperty[ this.propertyIndex ] = buffer[ offset ];

	}

	_setValue_arrayElement_setNeedsUpdate( buffer, offset ) {

		this.resolvedProperty[ this.propertyIndex ] = buffer[ offset ];
		this.targetObject.needsUpdate = true;

	}

	_setValue_arrayElement_setMatrixWorldNeedsUpdate( buffer, offset ) {

		this.resolvedProperty[ this.propertyIndex ] = buffer[ offset ];
		this.targetObject.matrixWorldNeedsUpdate = true;

	}

	// HasToFromArray

	_setValue_fromArray( buffer, offset ) {

		this.resolvedProperty.fromArray( buffer, offset );

	}

	_setValue_fromArray_setNeedsUpdate( buffer, offset ) {

		this.resolvedProperty.fromArray( buffer, offset );
		this.targetObject.needsUpdate = true;

	}

	_setValue_fromArray_setMatrixWorldNeedsUpdate( buffer, offset ) {

		this.resolvedProperty.fromArray( buffer, offset );
		this.targetObject.matrixWorldNeedsUpdate = true;

	}

	_getValue_unbound( targetArray, offset ) {

		this.bind();
		this.getValue( targetArray, offset );

	}

	_setValue_unbound( sourceArray, offset ) {

		this.bind();
		this.setValue( sourceArray, offset );

	}

	// create getter / setter pair for a property in the scene graph
	bind() {

		let targetObject = this.node;
		const parsedPath = this.parsedPath;

		const objectName = parsedPath.objectName;
		const propertyName = parsedPath.propertyName;
		let propertyIndex = parsedPath.propertyIndex;

		if ( ! targetObject ) {

			targetObject = PropertyBinding.findNode( this.rootNode, parsedPath.nodeName ) || this.rootNode;

			this.node = targetObject;

		}

		// set fail state so we can just 'return' on error
		this.getValue = this._getValue_unavailable;
		this.setValue = this._setValue_unavailable;

		// ensure there is a value node
		if ( ! targetObject ) {

			console.error( 'THREE.PropertyBinding: Trying to update node for track: ' + this.path + ' but it wasn\'t found.' );
			return;

		}

		if ( objectName ) {

			let objectIndex = parsedPath.objectIndex;

			// special cases were we need to reach deeper into the hierarchy to get the face materials....
			switch ( objectName ) {

				case 'materials':

					if ( ! targetObject.material ) {

						console.error( 'THREE.PropertyBinding: Can not bind to material as node does not have a material.', this );
						return;

					}

					if ( ! targetObject.material.materials ) {

						console.error( 'THREE.PropertyBinding: Can not bind to material.materials as node.material does not have a materials array.', this );
						return;

					}

					targetObject = targetObject.material.materials;

					break;

				case 'bones':

					if ( ! targetObject.skeleton ) {

						console.error( 'THREE.PropertyBinding: Can not bind to bones as node does not have a skeleton.', this );
						return;

					}

					// potential future optimization: skip this if propertyIndex is already an integer
					// and convert the integer string to a true integer.

					targetObject = targetObject.skeleton.bones;

					// support resolving morphTarget names into indices.
					for ( let i = 0; i < targetObject.length; i ++ ) {

						if ( targetObject[ i ].name === objectIndex ) {

							objectIndex = i;
							break;

						}

					}

					break;

				default:

					if ( targetObject[ objectName ] === undefined ) {

						console.error( 'THREE.PropertyBinding: Can not bind to objectName of node undefined.', this );
						return;

					}

					targetObject = targetObject[ objectName ];

			}


			if ( objectIndex !== undefined ) {

				if ( targetObject[ objectIndex ] === undefined ) {

					console.error( 'THREE.PropertyBinding: Trying to bind to objectIndex of objectName, but is undefined.', this, targetObject );
					return;

				}

				targetObject = targetObject[ objectIndex ];

			}

		}

		// resolve property
		const nodeProperty = targetObject[ propertyName ];

		if ( nodeProperty === undefined ) {

			const nodeName = parsedPath.nodeName;

			console.error( 'THREE.PropertyBinding: Trying to update property for track: ' + nodeName +
				'.' + propertyName + ' but it wasn\'t found.', targetObject );
			return;

		}

		// determine versioning scheme
		let versioning = this.Versioning.None;

		this.targetObject = targetObject;

		if ( targetObject.needsUpdate !== undefined ) { // material

			versioning = this.Versioning.NeedsUpdate;

		} else if ( targetObject.matrixWorldNeedsUpdate !== undefined ) { // node transform

			versioning = this.Versioning.MatrixWorldNeedsUpdate;

		}

		// determine how the property gets bound
		let bindingType = this.BindingType.Direct;

		if ( propertyIndex !== undefined ) {

			// access a sub element of the property array (only primitives are supported right now)

			if ( propertyName === 'morphTargetInfluences' ) {

				// potential optimization, skip this if propertyIndex is already an integer, and convert the integer string to a true integer.

				// support resolving morphTarget names into indices.
				if ( ! targetObject.geometry ) {

					console.error( 'THREE.PropertyBinding: Can not bind to morphTargetInfluences because node does not have a geometry.', this );
					return;

				}

				if ( targetObject.geometry.isBufferGeometry ) {

					if ( ! targetObject.geometry.morphAttributes ) {

						console.error( 'THREE.PropertyBinding: Can not bind to morphTargetInfluences because node does not have a geometry.morphAttributes.', this );
						return;

					}

					if ( targetObject.morphTargetDictionary[ propertyIndex ] !== undefined ) {

						propertyIndex = targetObject.morphTargetDictionary[ propertyIndex ];

					}


				} else {

					console.error( 'THREE.PropertyBinding: Can not bind to morphTargetInfluences on THREE.Geometry. Use THREE.BufferGeometry instead.', this );
					return;

				}

			}

			bindingType = this.BindingType.ArrayElement;

			this.resolvedProperty = nodeProperty;
			this.propertyIndex = propertyIndex;

		} else if ( nodeProperty.fromArray !== undefined && nodeProperty.toArray !== undefined ) {

			// must use copy for Object3D.Euler/Quaternion

			bindingType = this.BindingType.HasFromToArray;

			this.resolvedProperty = nodeProperty;

		} else if ( Array.isArray( nodeProperty ) ) {

			bindingType = this.BindingType.EntireArray;

			this.resolvedProperty = nodeProperty;

		} else {

			this.propertyName = propertyName;

		}

		// select getter / setter
		this.getValue = this.GetterByBindingType[ bindingType ];
		this.setValue = this.SetterByBindingTypeAndVersioning[ bindingType ][ versioning ];

	}

	unbind() {

		this.node = null;

		// back to the prototype version of getValue / setValue
		// note: avoiding to mutate the shape of 'this' via 'delete'
		this.getValue = this._getValue_unbound;
		this.setValue = this._setValue_unbound;

	}

}

PropertyBinding.Composite = Composite;

PropertyBinding.prototype.BindingType = {
	Direct: 0,
	EntireArray: 1,
	ArrayElement: 2,
	HasFromToArray: 3
};

PropertyBinding.prototype.Versioning = {
	None: 0,
	NeedsUpdate: 1,
	MatrixWorldNeedsUpdate: 2
};

PropertyBinding.prototype.GetterByBindingType = [

	PropertyBinding.prototype._getValue_direct,
	PropertyBinding.prototype._getValue_array,
	PropertyBinding.prototype._getValue_arrayElement,
	PropertyBinding.prototype._getValue_toArray,

];

PropertyBinding.prototype.SetterByBindingTypeAndVersioning = [

	[
		// Direct
		PropertyBinding.prototype._setValue_direct,
		PropertyBinding.prototype._setValue_direct_setNeedsUpdate,
		PropertyBinding.prototype._setValue_direct_setMatrixWorldNeedsUpdate,

	], [

		// EntireArray

		PropertyBinding.prototype._setValue_array,
		PropertyBinding.prototype._setValue_array_setNeedsUpdate,
		PropertyBinding.prototype._setValue_array_setMatrixWorldNeedsUpdate,

	], [

		// ArrayElement
		PropertyBinding.prototype._setValue_arrayElement,
		PropertyBinding.prototype._setValue_arrayElement_setNeedsUpdate,
		PropertyBinding.prototype._setValue_arrayElement_setMatrixWorldNeedsUpdate,

	], [

		// HasToFromArray
		PropertyBinding.prototype._setValue_fromArray,
		PropertyBinding.prototype._setValue_fromArray_setNeedsUpdate,
		PropertyBinding.prototype._setValue_fromArray_setMatrixWorldNeedsUpdate,

	]

];

/**
 *
 * A group of objects that receives a shared animation state.
 *
 * Usage:
 *
 *  - Add objects you would otherwise pass as 'root' to the
 *    constructor or the .clipAction method of AnimationMixer.
 *
 *  - Instead pass this object as 'root'.
 *
 *  - You can also add and remove objects later when the mixer
 *    is running.
 *
 * Note:
 *
 *    Objects of this class appear as one object to the mixer,
 *    so cache control of the individual objects must be done
 *    on the group.
 *
 * Limitation:
 *
 *  - The animated properties must be compatible among the
 *    all objects in the group.
 *
 *  - A single property can either be controlled through a
 *    target group or directly, but not both.
 */

class AnimationObjectGroup {

	constructor() {

		this.uuid = generateUUID();

		// cached objects followed by the active ones
		this._objects = Array.prototype.slice.call( arguments );

		this.nCachedObjects_ = 0; // threshold
		// note: read by PropertyBinding.Composite

		const indices = {};
		this._indicesByUUID = indices; // for bookkeeping

		for ( let i = 0, n = arguments.length; i !== n; ++ i ) {

			indices[ arguments[ i ].uuid ] = i;

		}

		this._paths = []; // inside: string
		this._parsedPaths = []; // inside: { we don't care, here }
		this._bindings = []; // inside: Array< PropertyBinding >
		this._bindingsIndicesByPath = {}; // inside: indices in these arrays

		const scope = this;

		this.stats = {

			objects: {
				get total() {

					return scope._objects.length;

				},
				get inUse() {

					return this.total - scope.nCachedObjects_;

				}
			},
			get bindingsPerObject() {

				return scope._bindings.length;

			}

		};

	}

	add() {

		const objects = this._objects,
			indicesByUUID = this._indicesByUUID,
			paths = this._paths,
			parsedPaths = this._parsedPaths,
			bindings = this._bindings,
			nBindings = bindings.length;

		let knownObject = undefined,
			nObjects = objects.length,
			nCachedObjects = this.nCachedObjects_;

		for ( let i = 0, n = arguments.length; i !== n; ++ i ) {

			const object = arguments[ i ],
				uuid = object.uuid;
			let index = indicesByUUID[ uuid ];

			if ( index === undefined ) {

				// unknown object -> add it to the ACTIVE region

				index = nObjects ++;
				indicesByUUID[ uuid ] = index;
				objects.push( object );

				// accounting is done, now do the same for all bindings

				for ( let j = 0, m = nBindings; j !== m; ++ j ) {

					bindings[ j ].push( new PropertyBinding( object, paths[ j ], parsedPaths[ j ] ) );

				}

			} else if ( index < nCachedObjects ) {

				knownObject = objects[ index ];

				// move existing object to the ACTIVE region

				const firstActiveIndex = -- nCachedObjects,
					lastCachedObject = objects[ firstActiveIndex ];

				indicesByUUID[ lastCachedObject.uuid ] = index;
				objects[ index ] = lastCachedObject;

				indicesByUUID[ uuid ] = firstActiveIndex;
				objects[ firstActiveIndex ] = object;

				// accounting is done, now do the same for all bindings

				for ( let j = 0, m = nBindings; j !== m; ++ j ) {

					const bindingsForPath = bindings[ j ],
						lastCached = bindingsForPath[ firstActiveIndex ];

					let binding = bindingsForPath[ index ];

					bindingsForPath[ index ] = lastCached;

					if ( binding === undefined ) {

						// since we do not bother to create new bindings
						// for objects that are cached, the binding may
						// or may not exist

						binding = new PropertyBinding( object, paths[ j ], parsedPaths[ j ] );

					}

					bindingsForPath[ firstActiveIndex ] = binding;

				}

			} else if ( objects[ index ] !== knownObject ) {

				console.error( 'THREE.AnimationObjectGroup: Different objects with the same UUID ' +
					'detected. Clean the caches or recreate your infrastructure when reloading scenes.' );

			} // else the object is already where we want it to be

		} // for arguments

		this.nCachedObjects_ = nCachedObjects;

	}

	remove() {

		const objects = this._objects,
			indicesByUUID = this._indicesByUUID,
			bindings = this._bindings,
			nBindings = bindings.length;

		let nCachedObjects = this.nCachedObjects_;

		for ( let i = 0, n = arguments.length; i !== n; ++ i ) {

			const object = arguments[ i ],
				uuid = object.uuid,
				index = indicesByUUID[ uuid ];

			if ( index !== undefined && index >= nCachedObjects ) {

				// move existing object into the CACHED region

				const lastCachedIndex = nCachedObjects ++,
					firstActiveObject = objects[ lastCachedIndex ];

				indicesByUUID[ firstActiveObject.uuid ] = index;
				objects[ index ] = firstActiveObject;

				indicesByUUID[ uuid ] = lastCachedIndex;
				objects[ lastCachedIndex ] = object;

				// accounting is done, now do the same for all bindings

				for ( let j = 0, m = nBindings; j !== m; ++ j ) {

					const bindingsForPath = bindings[ j ],
						firstActive = bindingsForPath[ lastCachedIndex ],
						binding = bindingsForPath[ index ];

					bindingsForPath[ index ] = firstActive;
					bindingsForPath[ lastCachedIndex ] = binding;

				}

			}

		} // for arguments

		this.nCachedObjects_ = nCachedObjects;

	}

	// remove & forget
	uncache() {

		const objects = this._objects,
			indicesByUUID = this._indicesByUUID,
			bindings = this._bindings,
			nBindings = bindings.length;

		let nCachedObjects = this.nCachedObjects_,
			nObjects = objects.length;

		for ( let i = 0, n = arguments.length; i !== n; ++ i ) {

			const object = arguments[ i ],
				uuid = object.uuid,
				index = indicesByUUID[ uuid ];

			if ( index !== undefined ) {

				delete indicesByUUID[ uuid ];

				if ( index < nCachedObjects ) {

					// object is cached, shrink the CACHED region

					const firstActiveIndex = -- nCachedObjects,
						lastCachedObject = objects[ firstActiveIndex ],
						lastIndex = -- nObjects,
						lastObject = objects[ lastIndex ];

					// last cached object takes this object's place
					indicesByUUID[ lastCachedObject.uuid ] = index;
					objects[ index ] = lastCachedObject;

					// last object goes to the activated slot and pop
					indicesByUUID[ lastObject.uuid ] = firstActiveIndex;
					objects[ firstActiveIndex ] = lastObject;
					objects.pop();

					// accounting is done, now do the same for all bindings

					for ( let j = 0, m = nBindings; j !== m; ++ j ) {

						const bindingsForPath = bindings[ j ],
							lastCached = bindingsForPath[ firstActiveIndex ],
							last = bindingsForPath[ lastIndex ];

						bindingsForPath[ index ] = lastCached;
						bindingsForPath[ firstActiveIndex ] = last;
						bindingsForPath.pop();

					}

				} else {

					// object is active, just swap with the last and pop

					const lastIndex = -- nObjects,
						lastObject = objects[ lastIndex ];

					if ( lastIndex > 0 ) {

						indicesByUUID[ lastObject.uuid ] = index;

					}

					objects[ index ] = lastObject;
					objects.pop();

					// accounting is done, now do the same for all bindings

					for ( let j = 0, m = nBindings; j !== m; ++ j ) {

						const bindingsForPath = bindings[ j ];

						bindingsForPath[ index ] = bindingsForPath[ lastIndex ];
						bindingsForPath.pop();

					}

				} // cached or active

			} // if object is known

		} // for arguments

		this.nCachedObjects_ = nCachedObjects;

	}

	// Internal interface used by befriended PropertyBinding.Composite:

	subscribe_( path, parsedPath ) {

		// returns an array of bindings for the given path that is changed
		// according to the contained objects in the group

		const indicesByPath = this._bindingsIndicesByPath;
		let index = indicesByPath[ path ];
		const bindings = this._bindings;

		if ( index !== undefined ) return bindings[ index ];

		const paths = this._paths,
			parsedPaths = this._parsedPaths,
			objects = this._objects,
			nObjects = objects.length,
			nCachedObjects = this.nCachedObjects_,
			bindingsForPath = new Array( nObjects );

		index = bindings.length;

		indicesByPath[ path ] = index;

		paths.push( path );
		parsedPaths.push( parsedPath );
		bindings.push( bindingsForPath );

		for ( let i = nCachedObjects, n = objects.length; i !== n; ++ i ) {

			const object = objects[ i ];
			bindingsForPath[ i ] = new PropertyBinding( object, path, parsedPath );

		}

		return bindingsForPath;

	}

	unsubscribe_( path ) {

		// tells the group to forget about a property path and no longer
		// update the array previously obtained with 'subscribe_'

		const indicesByPath = this._bindingsIndicesByPath,
			index = indicesByPath[ path ];

		if ( index !== undefined ) {

			const paths = this._paths,
				parsedPaths = this._parsedPaths,
				bindings = this._bindings,
				lastBindingsIndex = bindings.length - 1,
				lastBindings = bindings[ lastBindingsIndex ],
				lastBindingsPath = path[ lastBindingsIndex ];

			indicesByPath[ lastBindingsPath ] = index;

			bindings[ index ] = lastBindings;
			bindings.pop();

			parsedPaths[ index ] = parsedPaths[ lastBindingsIndex ];
			parsedPaths.pop();

			paths[ index ] = paths[ lastBindingsIndex ];
			paths.pop();

		}

	}

}

AnimationObjectGroup.prototype.isAnimationObjectGroup = true;

class AnimationAction {

	constructor( mixer, clip, localRoot = null, blendMode = clip.blendMode ) {

		this._mixer = mixer;
		this._clip = clip;
		this._localRoot = localRoot;
		this.blendMode = blendMode;

		const tracks = clip.tracks,
			nTracks = tracks.length,
			interpolants = new Array( nTracks );

		const interpolantSettings = {
			endingStart: ZeroCurvatureEnding,
			endingEnd: ZeroCurvatureEnding
		};

		for ( let i = 0; i !== nTracks; ++ i ) {

			const interpolant = tracks[ i ].createInterpolant( null );
			interpolants[ i ] = interpolant;
			interpolant.settings = interpolantSettings;

		}

		this._interpolantSettings = interpolantSettings;

		this._interpolants = interpolants; // bound by the mixer

		// inside: PropertyMixer (managed by the mixer)
		this._propertyBindings = new Array( nTracks );

		this._cacheIndex = null; // for the memory manager
		this._byClipCacheIndex = null; // for the memory manager

		this._timeScaleInterpolant = null;
		this._weightInterpolant = null;

		this.loop = LoopRepeat;
		this._loopCount = - 1;

		// global mixer time when the action is to be started
		// it's set back to 'null' upon start of the action
		this._startTime = null;

		// scaled local time of the action
		// gets clamped or wrapped to 0..clip.duration according to loop
		this.time = 0;

		this.timeScale = 1;
		this._effectiveTimeScale = 1;

		this.weight = 1;
		this._effectiveWeight = 1;

		this.repetitions = Infinity; // no. of repetitions when looping

		this.paused = false; // true -> zero effective time scale
		this.enabled = true; // false -> zero effective weight

		this.clampWhenFinished = false;// keep feeding the last frame?

		this.zeroSlopeAtStart = true;// for smooth interpolation w/o separate
		this.zeroSlopeAtEnd = true;// clips for start, loop and end

	}

	// State & Scheduling

	play() {

		this._mixer._activateAction( this );

		return this;

	}

	stop() {

		this._mixer._deactivateAction( this );

		return this.reset();

	}

	reset() {

		this.paused = false;
		this.enabled = true;

		this.time = 0; // restart clip
		this._loopCount = - 1;// forget previous loops
		this._startTime = null;// forget scheduling

		return this.stopFading().stopWarping();

	}

	isRunning() {

		return this.enabled && ! this.paused && this.timeScale !== 0 &&
			this._startTime === null && this._mixer._isActiveAction( this );

	}

	// return true when play has been called
	isScheduled() {

		return this._mixer._isActiveAction( this );

	}

	startAt( time ) {

		this._startTime = time;

		return this;

	}

	setLoop( mode, repetitions ) {

		this.loop = mode;
		this.repetitions = repetitions;

		return this;

	}

	// Weight

	// set the weight stopping any scheduled fading
	// although .enabled = false yields an effective weight of zero, this
	// method does *not* change .enabled, because it would be confusing
	setEffectiveWeight( weight ) {

		this.weight = weight;

		// note: same logic as when updated at runtime
		this._effectiveWeight = this.enabled ? weight : 0;

		return this.stopFading();

	}

	// return the weight considering fading and .enabled
	getEffectiveWeight() {

		return this._effectiveWeight;

	}

	fadeIn( duration ) {

		return this._scheduleFading( duration, 0, 1 );

	}

	fadeOut( duration ) {

		return this._scheduleFading( duration, 1, 0 );

	}

	crossFadeFrom( fadeOutAction, duration, warp ) {

		fadeOutAction.fadeOut( duration );
		this.fadeIn( duration );

		if ( warp ) {

			const fadeInDuration = this._clip.duration,
				fadeOutDuration = fadeOutAction._clip.duration,

				startEndRatio = fadeOutDuration / fadeInDuration,
				endStartRatio = fadeInDuration / fadeOutDuration;

			fadeOutAction.warp( 1.0, startEndRatio, duration );
			this.warp( endStartRatio, 1.0, duration );

		}

		return this;

	}

	crossFadeTo( fadeInAction, duration, warp ) {

		return fadeInAction.crossFadeFrom( this, duration, warp );

	}

	stopFading() {

		const weightInterpolant = this._weightInterpolant;

		if ( weightInterpolant !== null ) {

			this._weightInterpolant = null;
			this._mixer._takeBackControlInterpolant( weightInterpolant );

		}

		return this;

	}

	// Time Scale Control

	// set the time scale stopping any scheduled warping
	// although .paused = true yields an effective time scale of zero, this
	// method does *not* change .paused, because it would be confusing
	setEffectiveTimeScale( timeScale ) {

		this.timeScale = timeScale;
		this._effectiveTimeScale = this.paused ? 0 : timeScale;

		return this.stopWarping();

	}

	// return the time scale considering warping and .paused
	getEffectiveTimeScale() {

		return this._effectiveTimeScale;

	}

	setDuration( duration ) {

		this.timeScale = this._clip.duration / duration;

		return this.stopWarping();

	}

	syncWith( action ) {

		this.time = action.time;
		this.timeScale = action.timeScale;

		return this.stopWarping();

	}

	halt( duration ) {

		return this.warp( this._effectiveTimeScale, 0, duration );

	}

	warp( startTimeScale, endTimeScale, duration ) {

		const mixer = this._mixer,
			now = mixer.time,
			timeScale = this.timeScale;

		let interpolant = this._timeScaleInterpolant;

		if ( interpolant === null ) {

			interpolant = mixer._lendControlInterpolant();
			this._timeScaleInterpolant = interpolant;

		}

		const times = interpolant.parameterPositions,
			values = interpolant.sampleValues;

		times[ 0 ] = now;
		times[ 1 ] = now + duration;

		values[ 0 ] = startTimeScale / timeScale;
		values[ 1 ] = endTimeScale / timeScale;

		return this;

	}

	stopWarping() {

		const timeScaleInterpolant = this._timeScaleInterpolant;

		if ( timeScaleInterpolant !== null ) {

			this._timeScaleInterpolant = null;
			this._mixer._takeBackControlInterpolant( timeScaleInterpolant );

		}

		return this;

	}

	// Object Accessors

	getMixer() {

		return this._mixer;

	}

	getClip() {

		return this._clip;

	}

	getRoot() {

		return this._localRoot || this._mixer._root;

	}

	// Interna

	_update( time, deltaTime, timeDirection, accuIndex ) {

		// called by the mixer

		if ( ! this.enabled ) {

			// call ._updateWeight() to update ._effectiveWeight

			this._updateWeight( time );
			return;

		}

		const startTime = this._startTime;

		if ( startTime !== null ) {

			// check for scheduled start of action

			const timeRunning = ( time - startTime ) * timeDirection;
			if ( timeRunning < 0 || timeDirection === 0 ) {

				return; // yet to come / don't decide when delta = 0

			}

			// start

			this._startTime = null; // unschedule
			deltaTime = timeDirection * timeRunning;

		}

		// apply time scale and advance time

		deltaTime *= this._updateTimeScale( time );
		const clipTime = this._updateTime( deltaTime );

		// note: _updateTime may disable the action resulting in
		// an effective weight of 0

		const weight = this._updateWeight( time );

		if ( weight > 0 ) {

			const interpolants = this._interpolants;
			const propertyMixers = this._propertyBindings;

			switch ( this.blendMode ) {

				case AdditiveAnimationBlendMode:

					for ( let j = 0, m = interpolants.length; j !== m; ++ j ) {

						interpolants[ j ].evaluate( clipTime );
						propertyMixers[ j ].accumulateAdditive( weight );

					}

					break;

				case NormalAnimationBlendMode:
				default:

					for ( let j = 0, m = interpolants.length; j !== m; ++ j ) {

						interpolants[ j ].evaluate( clipTime );
						propertyMixers[ j ].accumulate( accuIndex, weight );

					}

			}

		}

	}

	_updateWeight( time ) {

		let weight = 0;

		if ( this.enabled ) {

			weight = this.weight;
			const interpolant = this._weightInterpolant;

			if ( interpolant !== null ) {

				const interpolantValue = interpolant.evaluate( time )[ 0 ];

				weight *= interpolantValue;

				if ( time > interpolant.parameterPositions[ 1 ] ) {

					this.stopFading();

					if ( interpolantValue === 0 ) {

						// faded out, disable
						this.enabled = false;

					}

				}

			}

		}

		this._effectiveWeight = weight;
		return weight;

	}

	_updateTimeScale( time ) {

		let timeScale = 0;

		if ( ! this.paused ) {

			timeScale = this.timeScale;

			const interpolant = this._timeScaleInterpolant;

			if ( interpolant !== null ) {

				const interpolantValue = interpolant.evaluate( time )[ 0 ];

				timeScale *= interpolantValue;

				if ( time > interpolant.parameterPositions[ 1 ] ) {

					this.stopWarping();

					if ( timeScale === 0 ) {

						// motion has halted, pause
						this.paused = true;

					} else {

						// warp done - apply final time scale
						this.timeScale = timeScale;

					}

				}

			}

		}

		this._effectiveTimeScale = timeScale;
		return timeScale;

	}

	_updateTime( deltaTime ) {

		const duration = this._clip.duration;
		const loop = this.loop;

		let time = this.time + deltaTime;
		let loopCount = this._loopCount;

		const pingPong = ( loop === LoopPingPong );

		if ( deltaTime === 0 ) {

			if ( loopCount === - 1 ) return time;

			return ( pingPong && ( loopCount & 1 ) === 1 ) ? duration - time : time;

		}

		if ( loop === LoopOnce ) {

			if ( loopCount === - 1 ) {

				// just started

				this._loopCount = 0;
				this._setEndings( true, true, false );

			}

			handle_stop: {

				if ( time >= duration ) {

					time = duration;

				} else if ( time < 0 ) {

					time = 0;

				} else {

					this.time = time;

					break handle_stop;

				}

				if ( this.clampWhenFinished ) this.paused = true;
				else this.enabled = false;

				this.time = time;

				this._mixer.dispatchEvent( {
					type: 'finished', action: this,
					direction: deltaTime < 0 ? - 1 : 1
				} );

			}

		} else { // repetitive Repeat or PingPong

			if ( loopCount === - 1 ) {

				// just started

				if ( deltaTime >= 0 ) {

					loopCount = 0;

					this._setEndings( true, this.repetitions === 0, pingPong );

				} else {

					// when looping in reverse direction, the initial
					// transition through zero counts as a repetition,
					// so leave loopCount at -1

					this._setEndings( this.repetitions === 0, true, pingPong );

				}

			}

			if ( time >= duration || time < 0 ) {

				// wrap around

				const loopDelta = Math.floor( time / duration ); // signed
				time -= duration * loopDelta;

				loopCount += Math.abs( loopDelta );

				const pending = this.repetitions - loopCount;

				if ( pending <= 0 ) {

					// have to stop (switch state, clamp time, fire event)

					if ( this.clampWhenFinished ) this.paused = true;
					else this.enabled = false;

					time = deltaTime > 0 ? duration : 0;

					this.time = time;

					this._mixer.dispatchEvent( {
						type: 'finished', action: this,
						direction: deltaTime > 0 ? 1 : - 1
					} );

				} else {

					// keep running

					if ( pending === 1 ) {

						// entering the last round

						const atStart = deltaTime < 0;
						this._setEndings( atStart, ! atStart, pingPong );

					} else {

						this._setEndings( false, false, pingPong );

					}

					this._loopCount = loopCount;

					this.time = time;

					this._mixer.dispatchEvent( {
						type: 'loop', action: this, loopDelta: loopDelta
					} );

				}

			} else {

				this.time = time;

			}

			if ( pingPong && ( loopCount & 1 ) === 1 ) {

				// invert time for the "pong round"

				return duration - time;

			}

		}

		return time;

	}

	_setEndings( atStart, atEnd, pingPong ) {

		const settings = this._interpolantSettings;

		if ( pingPong ) {

			settings.endingStart = ZeroSlopeEnding;
			settings.endingEnd = ZeroSlopeEnding;

		} else {

			// assuming for LoopOnce atStart == atEnd == true

			if ( atStart ) {

				settings.endingStart = this.zeroSlopeAtStart ? ZeroSlopeEnding : ZeroCurvatureEnding;

			} else {

				settings.endingStart = WrapAroundEnding;

			}

			if ( atEnd ) {

				settings.endingEnd = this.zeroSlopeAtEnd ? ZeroSlopeEnding : ZeroCurvatureEnding;

			} else {

				settings.endingEnd 	 = WrapAroundEnding;

			}

		}

	}

	_scheduleFading( duration, weightNow, weightThen ) {

		const mixer = this._mixer, now = mixer.time;
		let interpolant = this._weightInterpolant;

		if ( interpolant === null ) {

			interpolant = mixer._lendControlInterpolant();
			this._weightInterpolant = interpolant;

		}

		const times = interpolant.parameterPositions,
			values = interpolant.sampleValues;

		times[ 0 ] = now;
		values[ 0 ] = weightNow;
		times[ 1 ] = now + duration;
		values[ 1 ] = weightThen;

		return this;

	}

}

class AnimationMixer extends EventDispatcher {

	constructor( root ) {

		super();

		this._root = root;
		this._initMemoryManager();
		this._accuIndex = 0;
		this.time = 0;
		this.timeScale = 1.0;

	}

	_bindAction( action, prototypeAction ) {

		const root = action._localRoot || this._root,
			tracks = action._clip.tracks,
			nTracks = tracks.length,
			bindings = action._propertyBindings,
			interpolants = action._interpolants,
			rootUuid = root.uuid,
			bindingsByRoot = this._bindingsByRootAndName;

		let bindingsByName = bindingsByRoot[ rootUuid ];

		if ( bindingsByName === undefined ) {

			bindingsByName = {};
			bindingsByRoot[ rootUuid ] = bindingsByName;

		}

		for ( let i = 0; i !== nTracks; ++ i ) {

			const track = tracks[ i ],
				trackName = track.name;

			let binding = bindingsByName[ trackName ];

			if ( binding !== undefined ) {

				++ binding.referenceCount;
				bindings[ i ] = binding;

			} else {

				binding = bindings[ i ];

				if ( binding !== undefined ) {

					// existing binding, make sure the cache knows

					if ( binding._cacheIndex === null ) {

						++ binding.referenceCount;
						this._addInactiveBinding( binding, rootUuid, trackName );

					}

					continue;

				}

				const path = prototypeAction && prototypeAction.
					_propertyBindings[ i ].binding.parsedPath;

				binding = new PropertyMixer(
					PropertyBinding.create( root, trackName, path ),
					track.ValueTypeName, track.getValueSize() );

				++ binding.referenceCount;
				this._addInactiveBinding( binding, rootUuid, trackName );

				bindings[ i ] = binding;

			}

			interpolants[ i ].resultBuffer = binding.buffer;

		}

	}

	_activateAction( action ) {

		if ( ! this._isActiveAction( action ) ) {

			if ( action._cacheIndex === null ) {

				// this action has been forgotten by the cache, but the user
				// appears to be still using it -> rebind

				const rootUuid = ( action._localRoot || this._root ).uuid,
					clipUuid = action._clip.uuid,
					actionsForClip = this._actionsByClip[ clipUuid ];

				this._bindAction( action,
					actionsForClip && actionsForClip.knownActions[ 0 ] );

				this._addInactiveAction( action, clipUuid, rootUuid );

			}

			const bindings = action._propertyBindings;

			// increment reference counts / sort out state
			for ( let i = 0, n = bindings.length; i !== n; ++ i ) {

				const binding = bindings[ i ];

				if ( binding.useCount ++ === 0 ) {

					this._lendBinding( binding );
					binding.saveOriginalState();

				}

			}

			this._lendAction( action );

		}

	}

	_deactivateAction( action ) {

		if ( this._isActiveAction( action ) ) {

			const bindings = action._propertyBindings;

			// decrement reference counts / sort out state
			for ( let i = 0, n = bindings.length; i !== n; ++ i ) {

				const binding = bindings[ i ];

				if ( -- binding.useCount === 0 ) {

					binding.restoreOriginalState();
					this._takeBackBinding( binding );

				}

			}

			this._takeBackAction( action );

		}

	}

	// Memory manager

	_initMemoryManager() {

		this._actions = []; // 'nActiveActions' followed by inactive ones
		this._nActiveActions = 0;

		this._actionsByClip = {};
		// inside:
		// {
		// 	knownActions: Array< AnimationAction > - used as prototypes
		// 	actionByRoot: AnimationAction - lookup
		// }


		this._bindings = []; // 'nActiveBindings' followed by inactive ones
		this._nActiveBindings = 0;

		this._bindingsByRootAndName = {}; // inside: Map< name, PropertyMixer >


		this._controlInterpolants = []; // same game as above
		this._nActiveControlInterpolants = 0;

		const scope = this;

		this.stats = {

			actions: {
				get total() {

					return scope._actions.length;

				},
				get inUse() {

					return scope._nActiveActions;

				}
			},
			bindings: {
				get total() {

					return scope._bindings.length;

				},
				get inUse() {

					return scope._nActiveBindings;

				}
			},
			controlInterpolants: {
				get total() {

					return scope._controlInterpolants.length;

				},
				get inUse() {

					return scope._nActiveControlInterpolants;

				}
			}

		};

	}

	// Memory management for AnimationAction objects

	_isActiveAction( action ) {

		const index = action._cacheIndex;
		return index !== null && index < this._nActiveActions;

	}

	_addInactiveAction( action, clipUuid, rootUuid ) {

		const actions = this._actions,
			actionsByClip = this._actionsByClip;

		let actionsForClip = actionsByClip[ clipUuid ];

		if ( actionsForClip === undefined ) {

			actionsForClip = {

				knownActions: [ action ],
				actionByRoot: {}

			};

			action._byClipCacheIndex = 0;

			actionsByClip[ clipUuid ] = actionsForClip;

		} else {

			const knownActions = actionsForClip.knownActions;

			action._byClipCacheIndex = knownActions.length;
			knownActions.push( action );

		}

		action._cacheIndex = actions.length;
		actions.push( action );

		actionsForClip.actionByRoot[ rootUuid ] = action;

	}

	_removeInactiveAction( action ) {

		const actions = this._actions,
			lastInactiveAction = actions[ actions.length - 1 ],
			cacheIndex = action._cacheIndex;

		lastInactiveAction._cacheIndex = cacheIndex;
		actions[ cacheIndex ] = lastInactiveAction;
		actions.pop();

		action._cacheIndex = null;


		const clipUuid = action._clip.uuid,
			actionsByClip = this._actionsByClip,
			actionsForClip = actionsByClip[ clipUuid ],
			knownActionsForClip = actionsForClip.knownActions,

			lastKnownAction =
				knownActionsForClip[ knownActionsForClip.length - 1 ],

			byClipCacheIndex = action._byClipCacheIndex;

		lastKnownAction._byClipCacheIndex = byClipCacheIndex;
		knownActionsForClip[ byClipCacheIndex ] = lastKnownAction;
		knownActionsForClip.pop();

		action._byClipCacheIndex = null;


		const actionByRoot = actionsForClip.actionByRoot,
			rootUuid = ( action._localRoot || this._root ).uuid;

		delete actionByRoot[ rootUuid ];

		if ( knownActionsForClip.length === 0 ) {

			delete actionsByClip[ clipUuid ];

		}

		this._removeInactiveBindingsForAction( action );

	}

	_removeInactiveBindingsForAction( action ) {

		const bindings = action._propertyBindings;

		for ( let i = 0, n = bindings.length; i !== n; ++ i ) {

			const binding = bindings[ i ];

			if ( -- binding.referenceCount === 0 ) {

				this._removeInactiveBinding( binding );

			}

		}

	}

	_lendAction( action ) {

		// [ active actions |  inactive actions  ]
		// [  active actions >| inactive actions ]
		//                 s        a
		//                  <-swap->
		//                 a        s

		const actions = this._actions,
			prevIndex = action._cacheIndex,

			lastActiveIndex = this._nActiveActions ++,

			firstInactiveAction = actions[ lastActiveIndex ];

		action._cacheIndex = lastActiveIndex;
		actions[ lastActiveIndex ] = action;

		firstInactiveAction._cacheIndex = prevIndex;
		actions[ prevIndex ] = firstInactiveAction;

	}

	_takeBackAction( action ) {

		// [  active actions  | inactive actions ]
		// [ active actions |< inactive actions  ]
		//        a        s
		//         <-swap->
		//        s        a

		const actions = this._actions,
			prevIndex = action._cacheIndex,

			firstInactiveIndex = -- this._nActiveActions,

			lastActiveAction = actions[ firstInactiveIndex ];

		action._cacheIndex = firstInactiveIndex;
		actions[ firstInactiveIndex ] = action;

		lastActiveAction._cacheIndex = prevIndex;
		actions[ prevIndex ] = lastActiveAction;

	}

	// Memory management for PropertyMixer objects

	_addInactiveBinding( binding, rootUuid, trackName ) {

		const bindingsByRoot = this._bindingsByRootAndName,
			bindings = this._bindings;

		let bindingByName = bindingsByRoot[ rootUuid ];

		if ( bindingByName === undefined ) {

			bindingByName = {};
			bindingsByRoot[ rootUuid ] = bindingByName;

		}

		bindingByName[ trackName ] = binding;

		binding._cacheIndex = bindings.length;
		bindings.push( binding );

	}

	_removeInactiveBinding( binding ) {

		const bindings = this._bindings,
			propBinding = binding.binding,
			rootUuid = propBinding.rootNode.uuid,
			trackName = propBinding.path,
			bindingsByRoot = this._bindingsByRootAndName,
			bindingByName = bindingsByRoot[ rootUuid ],

			lastInactiveBinding = bindings[ bindings.length - 1 ],
			cacheIndex = binding._cacheIndex;

		lastInactiveBinding._cacheIndex = cacheIndex;
		bindings[ cacheIndex ] = lastInactiveBinding;
		bindings.pop();

		delete bindingByName[ trackName ];

		if ( Object.keys( bindingByName ).length === 0 ) {

			delete bindingsByRoot[ rootUuid ];

		}

	}

	_lendBinding( binding ) {

		const bindings = this._bindings,
			prevIndex = binding._cacheIndex,

			lastActiveIndex = this._nActiveBindings ++,

			firstInactiveBinding = bindings[ lastActiveIndex ];

		binding._cacheIndex = lastActiveIndex;
		bindings[ lastActiveIndex ] = binding;

		firstInactiveBinding._cacheIndex = prevIndex;
		bindings[ prevIndex ] = firstInactiveBinding;

	}

	_takeBackBinding( binding ) {

		const bindings = this._bindings,
			prevIndex = binding._cacheIndex,

			firstInactiveIndex = -- this._nActiveBindings,

			lastActiveBinding = bindings[ firstInactiveIndex ];

		binding._cacheIndex = firstInactiveIndex;
		bindings[ firstInactiveIndex ] = binding;

		lastActiveBinding._cacheIndex = prevIndex;
		bindings[ prevIndex ] = lastActiveBinding;

	}


	// Memory management of Interpolants for weight and time scale

	_lendControlInterpolant() {

		const interpolants = this._controlInterpolants,
			lastActiveIndex = this._nActiveControlInterpolants ++;

		let interpolant = interpolants[ lastActiveIndex ];

		if ( interpolant === undefined ) {

			interpolant = new LinearInterpolant(
				new Float32Array( 2 ), new Float32Array( 2 ),
				1, this._controlInterpolantsResultBuffer );

			interpolant.__cacheIndex = lastActiveIndex;
			interpolants[ lastActiveIndex ] = interpolant;

		}

		return interpolant;

	}

	_takeBackControlInterpolant( interpolant ) {

		const interpolants = this._controlInterpolants,
			prevIndex = interpolant.__cacheIndex,

			firstInactiveIndex = -- this._nActiveControlInterpolants,

			lastActiveInterpolant = interpolants[ firstInactiveIndex ];

		interpolant.__cacheIndex = firstInactiveIndex;
		interpolants[ firstInactiveIndex ] = interpolant;

		lastActiveInterpolant.__cacheIndex = prevIndex;
		interpolants[ prevIndex ] = lastActiveInterpolant;

	}

	// return an action for a clip optionally using a custom root target
	// object (this method allocates a lot of dynamic memory in case a
	// previously unknown clip/root combination is specified)
	clipAction( clip, optionalRoot, blendMode ) {

		const root = optionalRoot || this._root,
			rootUuid = root.uuid;

		let clipObject = typeof clip === 'string' ? AnimationClip.findByName( root, clip ) : clip;

		const clipUuid = clipObject !== null ? clipObject.uuid : clip;

		const actionsForClip = this._actionsByClip[ clipUuid ];
		let prototypeAction = null;

		if ( blendMode === undefined ) {

			if ( clipObject !== null ) {

				blendMode = clipObject.blendMode;

			} else {

				blendMode = NormalAnimationBlendMode;

			}

		}

		if ( actionsForClip !== undefined ) {

			const existingAction = actionsForClip.actionByRoot[ rootUuid ];

			if ( existingAction !== undefined && existingAction.blendMode === blendMode ) {

				return existingAction;

			}

			// we know the clip, so we don't have to parse all
			// the bindings again but can just copy
			prototypeAction = actionsForClip.knownActions[ 0 ];

			// also, take the clip from the prototype action
			if ( clipObject === null )
				clipObject = prototypeAction._clip;

		}

		// clip must be known when specified via string
		if ( clipObject === null ) return null;

		// allocate all resources required to run it
		const newAction = new AnimationAction( this, clipObject, optionalRoot, blendMode );

		this._bindAction( newAction, prototypeAction );

		// and make the action known to the memory manager
		this._addInactiveAction( newAction, clipUuid, rootUuid );

		return newAction;

	}

	// get an existing action
	existingAction( clip, optionalRoot ) {

		const root = optionalRoot || this._root,
			rootUuid = root.uuid,

			clipObject = typeof clip === 'string' ?
				AnimationClip.findByName( root, clip ) : clip,

			clipUuid = clipObject ? clipObject.uuid : clip,

			actionsForClip = this._actionsByClip[ clipUuid ];

		if ( actionsForClip !== undefined ) {

			return actionsForClip.actionByRoot[ rootUuid ] || null;

		}

		return null;

	}

	// deactivates all previously scheduled actions
	stopAllAction() {

		const actions = this._actions,
			nActions = this._nActiveActions;

		for ( let i = nActions - 1; i >= 0; -- i ) {

			actions[ i ].stop();

		}

		return this;

	}

	// advance the time and update apply the animation
	update( deltaTime ) {

		deltaTime *= this.timeScale;

		const actions = this._actions,
			nActions = this._nActiveActions,

			time = this.time += deltaTime,
			timeDirection = Math.sign( deltaTime ),

			accuIndex = this._accuIndex ^= 1;

		// run active actions

		for ( let i = 0; i !== nActions; ++ i ) {

			const action = actions[ i ];

			action._update( time, deltaTime, timeDirection, accuIndex );

		}

		// update scene graph

		const bindings = this._bindings,
			nBindings = this._nActiveBindings;

		for ( let i = 0; i !== nBindings; ++ i ) {

			bindings[ i ].apply( accuIndex );

		}

		return this;

	}

	// Allows you to seek to a specific time in an animation.
	setTime( timeInSeconds ) {

		this.time = 0; // Zero out time attribute for AnimationMixer object;
		for ( let i = 0; i < this._actions.length; i ++ ) {

			this._actions[ i ].time = 0; // Zero out time attribute for all associated AnimationAction objects.

		}

		return this.update( timeInSeconds ); // Update used to set exact time. Returns "this" AnimationMixer object.

	}

	// return this mixer's root target object
	getRoot() {

		return this._root;

	}

	// free all resources specific to a particular clip
	uncacheClip( clip ) {

		const actions = this._actions,
			clipUuid = clip.uuid,
			actionsByClip = this._actionsByClip,
			actionsForClip = actionsByClip[ clipUuid ];

		if ( actionsForClip !== undefined ) {

			// note: just calling _removeInactiveAction would mess up the
			// iteration state and also require updating the state we can
			// just throw away

			const actionsToRemove = actionsForClip.knownActions;

			for ( let i = 0, n = actionsToRemove.length; i !== n; ++ i ) {

				const action = actionsToRemove[ i ];

				this._deactivateAction( action );

				const cacheIndex = action._cacheIndex,
					lastInactiveAction = actions[ actions.length - 1 ];

				action._cacheIndex = null;
				action._byClipCacheIndex = null;

				lastInactiveAction._cacheIndex = cacheIndex;
				actions[ cacheIndex ] = lastInactiveAction;
				actions.pop();

				this._removeInactiveBindingsForAction( action );

			}

			delete actionsByClip[ clipUuid ];

		}

	}

	// free all resources specific to a particular root target object
	uncacheRoot( root ) {

		const rootUuid = root.uuid,
			actionsByClip = this._actionsByClip;

		for ( const clipUuid in actionsByClip ) {

			const actionByRoot = actionsByClip[ clipUuid ].actionByRoot,
				action = actionByRoot[ rootUuid ];

			if ( action !== undefined ) {

				this._deactivateAction( action );
				this._removeInactiveAction( action );

			}

		}

		const bindingsByRoot = this._bindingsByRootAndName,
			bindingByName = bindingsByRoot[ rootUuid ];

		if ( bindingByName !== undefined ) {

			for ( const trackName in bindingByName ) {

				const binding = bindingByName[ trackName ];
				binding.restoreOriginalState();
				this._removeInactiveBinding( binding );

			}

		}

	}

	// remove a targeted clip from the cache
	uncacheAction( clip, optionalRoot ) {

		const action = this.existingAction( clip, optionalRoot );

		if ( action !== null ) {

			this._deactivateAction( action );
			this._removeInactiveAction( action );

		}

	}

}

AnimationMixer.prototype._controlInterpolantsResultBuffer = new Float32Array( 1 );

class Uniform {

	constructor( value ) {

		if ( typeof value === 'string' ) {

			console.warn( 'THREE.Uniform: Type parameter is no longer needed.' );
			value = arguments[ 1 ];

		}

		this.value = value;

	}

	clone() {

		return new Uniform( this.value.clone === undefined ? this.value : this.value.clone() );

	}

}

class InstancedInterleavedBuffer extends InterleavedBuffer {

	constructor( array, stride, meshPerAttribute = 1 ) {

		super( array, stride );

		this.meshPerAttribute = meshPerAttribute;

	}

	copy( source ) {

		super.copy( source );

		this.meshPerAttribute = source.meshPerAttribute;

		return this;

	}

	clone( data ) {

		const ib = super.clone( data );

		ib.meshPerAttribute = this.meshPerAttribute;

		return ib;

	}

	toJSON( data ) {

		const json = super.toJSON( data );

		json.isInstancedInterleavedBuffer = true;
		json.meshPerAttribute = this.meshPerAttribute;

		return json;

	}

}

InstancedInterleavedBuffer.prototype.isInstancedInterleavedBuffer = true;

class GLBufferAttribute {

	constructor( buffer, type, itemSize, elementSize, count ) {

		this.buffer = buffer;
		this.type = type;
		this.itemSize = itemSize;
		this.elementSize = elementSize;
		this.count = count;

		this.version = 0;

	}

	set needsUpdate( value ) {

		if ( value === true ) this.version ++;

	}

	setBuffer( buffer ) {

		this.buffer = buffer;

		return this;

	}

	setType( type, elementSize ) {

		this.type = type;
		this.elementSize = elementSize;

		return this;

	}

	setItemSize( itemSize ) {

		this.itemSize = itemSize;

		return this;

	}

	setCount( count ) {

		this.count = count;

		return this;

	}

}

GLBufferAttribute.prototype.isGLBufferAttribute = true;

class Raycaster {

	constructor( origin, direction, near = 0, far = Infinity ) {

		this.ray = new Ray( origin, direction );
		// direction is assumed to be normalized (for accurate distance calculations)

		this.near = near;
		this.far = far;
		this.camera = null;
		this.layers = new Layers();

		this.params = {
			Mesh: {},
			Line: { threshold: 1 },
			LOD: {},
			Points: { threshold: 1 },
			Sprite: {}
		};

	}

	set( origin, direction ) {

		// direction is assumed to be normalized (for accurate distance calculations)

		this.ray.set( origin, direction );

	}

	setFromCamera( coords, camera ) {

		if ( camera.isPerspectiveCamera ) {

			this.ray.origin.setFromMatrixPosition( camera.matrixWorld );
			this.ray.direction.set( coords.x, coords.y, 0.5 ).unproject( camera ).sub( this.ray.origin ).normalize();
			this.camera = camera;

		} else if ( camera.isOrthographicCamera ) {

			this.ray.origin.set( coords.x, coords.y, ( camera.near + camera.far ) / ( camera.near - camera.far ) ).unproject( camera ); // set origin in plane of camera
			this.ray.direction.set( 0, 0, - 1 ).transformDirection( camera.matrixWorld );
			this.camera = camera;

		} else {

			console.error( 'THREE.Raycaster: Unsupported camera type: ' + camera.type );

		}

	}

	intersectObject( object, recursive = true, intersects = [] ) {

		intersectObject( object, this, intersects, recursive );

		intersects.sort( ascSort );

		return intersects;

	}

	intersectObjects( objects, recursive = true, intersects = [] ) {

		for ( let i = 0, l = objects.length; i < l; i ++ ) {

			intersectObject( objects[ i ], this, intersects, recursive );

		}

		intersects.sort( ascSort );

		return intersects;

	}

}

function ascSort( a, b ) {

	return a.distance - b.distance;

}

function intersectObject( object, raycaster, intersects, recursive ) {

	if ( object.layers.test( raycaster.layers ) ) {

		object.raycast( raycaster, intersects );

	}

	if ( recursive === true ) {

		const children = object.children;

		for ( let i = 0, l = children.length; i < l; i ++ ) {

			intersectObject( children[ i ], raycaster, intersects, true );

		}

	}

}

/**
 * Ref: https://en.wikipedia.org/wiki/Spherical_coordinate_system
 *
 * The polar angle (phi) is measured from the positive y-axis. The positive y-axis is up.
 * The azimuthal angle (theta) is measured from the positive z-axis.
 */

class Spherical {

	constructor( radius = 1, phi = 0, theta = 0 ) {

		this.radius = radius;
		this.phi = phi; // polar angle
		this.theta = theta; // azimuthal angle

		return this;

	}

	set( radius, phi, theta ) {

		this.radius = radius;
		this.phi = phi;
		this.theta = theta;

		return this;

	}

	copy( other ) {

		this.radius = other.radius;
		this.phi = other.phi;
		this.theta = other.theta;

		return this;

	}

	// restrict phi to be betwee EPS and PI-EPS
	makeSafe() {

		const EPS = 0.000001;
		this.phi = Math.max( EPS, Math.min( Math.PI - EPS, this.phi ) );

		return this;

	}

	setFromVector3( v ) {

		return this.setFromCartesianCoords( v.x, v.y, v.z );

	}

	setFromCartesianCoords( x, y, z ) {

		this.radius = Math.sqrt( x * x + y * y + z * z );

		if ( this.radius === 0 ) {

			this.theta = 0;
			this.phi = 0;

		} else {

			this.theta = Math.atan2( x, z );
			this.phi = Math.acos( clamp$1( y / this.radius, - 1, 1 ) );

		}

		return this;

	}

	clone() {

		return new this.constructor().copy( this );

	}

}

/**
 * Ref: https://en.wikipedia.org/wiki/Cylindrical_coordinate_system
 */

class Cylindrical {

	constructor( radius = 1, theta = 0, y = 0 ) {

		this.radius = radius; // distance from the origin to a point in the x-z plane
		this.theta = theta; // counterclockwise angle in the x-z plane measured in radians from the positive z-axis
		this.y = y; // height above the x-z plane

		return this;

	}

	set( radius, theta, y ) {

		this.radius = radius;
		this.theta = theta;
		this.y = y;

		return this;

	}

	copy( other ) {

		this.radius = other.radius;
		this.theta = other.theta;
		this.y = other.y;

		return this;

	}

	setFromVector3( v ) {

		return this.setFromCartesianCoords( v.x, v.y, v.z );

	}

	setFromCartesianCoords( x, y, z ) {

		this.radius = Math.sqrt( x * x + z * z );
		this.theta = Math.atan2( x, z );
		this.y = y;

		return this;

	}

	clone() {

		return new this.constructor().copy( this );

	}

}

const _vector$4 = /*@__PURE__*/ new Vector2();

class Box2 {

	constructor( min = new Vector2( + Infinity, + Infinity ), max = new Vector2( - Infinity, - Infinity ) ) {

		this.min = min;
		this.max = max;

	}

	set( min, max ) {

		this.min.copy( min );
		this.max.copy( max );

		return this;

	}

	setFromPoints( points ) {

		this.makeEmpty();

		for ( let i = 0, il = points.length; i < il; i ++ ) {

			this.expandByPoint( points[ i ] );

		}

		return this;

	}

	setFromCenterAndSize( center, size ) {

		const halfSize = _vector$4.copy( size ).multiplyScalar( 0.5 );
		this.min.copy( center ).sub( halfSize );
		this.max.copy( center ).add( halfSize );

		return this;

	}

	clone() {

		return new this.constructor().copy( this );

	}

	copy( box ) {

		this.min.copy( box.min );
		this.max.copy( box.max );

		return this;

	}

	makeEmpty() {

		this.min.x = this.min.y = + Infinity;
		this.max.x = this.max.y = - Infinity;

		return this;

	}

	isEmpty() {

		// this is a more robust check for empty than ( volume <= 0 ) because volume can get positive with two negative axes

		return ( this.max.x < this.min.x ) || ( this.max.y < this.min.y );

	}

	getCenter( target ) {

		return this.isEmpty() ? target.set( 0, 0 ) : target.addVectors( this.min, this.max ).multiplyScalar( 0.5 );

	}

	getSize( target ) {

		return this.isEmpty() ? target.set( 0, 0 ) : target.subVectors( this.max, this.min );

	}

	expandByPoint( point ) {

		this.min.min( point );
		this.max.max( point );

		return this;

	}

	expandByVector( vector ) {

		this.min.sub( vector );
		this.max.add( vector );

		return this;

	}

	expandByScalar( scalar ) {

		this.min.addScalar( - scalar );
		this.max.addScalar( scalar );

		return this;

	}

	containsPoint( point ) {

		return point.x < this.min.x || point.x > this.max.x ||
			point.y < this.min.y || point.y > this.max.y ? false : true;

	}

	containsBox( box ) {

		return this.min.x <= box.min.x && box.max.x <= this.max.x &&
			this.min.y <= box.min.y && box.max.y <= this.max.y;

	}

	getParameter( point, target ) {

		// This can potentially have a divide by zero if the box
		// has a size dimension of 0.

		return target.set(
			( point.x - this.min.x ) / ( this.max.x - this.min.x ),
			( point.y - this.min.y ) / ( this.max.y - this.min.y )
		);

	}

	intersectsBox( box ) {

		// using 4 splitting planes to rule out intersections

		return box.max.x < this.min.x || box.min.x > this.max.x ||
			box.max.y < this.min.y || box.min.y > this.max.y ? false : true;

	}

	clampPoint( point, target ) {

		return target.copy( point ).clamp( this.min, this.max );

	}

	distanceToPoint( point ) {

		const clampedPoint = _vector$4.copy( point ).clamp( this.min, this.max );
		return clampedPoint.sub( point ).length();

	}

	intersect( box ) {

		this.min.max( box.min );
		this.max.min( box.max );

		return this;

	}

	union( box ) {

		this.min.min( box.min );
		this.max.max( box.max );

		return this;

	}

	translate( offset ) {

		this.min.add( offset );
		this.max.add( offset );

		return this;

	}

	equals( box ) {

		return box.min.equals( this.min ) && box.max.equals( this.max );

	}

}

Box2.prototype.isBox2 = true;

const _startP = /*@__PURE__*/ new Vector3();
const _startEnd = /*@__PURE__*/ new Vector3();

class Line3 {

	constructor( start = new Vector3(), end = new Vector3() ) {

		this.start = start;
		this.end = end;

	}

	set( start, end ) {

		this.start.copy( start );
		this.end.copy( end );

		return this;

	}

	copy( line ) {

		this.start.copy( line.start );
		this.end.copy( line.end );

		return this;

	}

	getCenter( target ) {

		return target.addVectors( this.start, this.end ).multiplyScalar( 0.5 );

	}

	delta( target ) {

		return target.subVectors( this.end, this.start );

	}

	distanceSq() {

		return this.start.distanceToSquared( this.end );

	}

	distance() {

		return this.start.distanceTo( this.end );

	}

	at( t, target ) {

		return this.delta( target ).multiplyScalar( t ).add( this.start );

	}

	closestPointToPointParameter( point, clampToLine ) {

		_startP.subVectors( point, this.start );
		_startEnd.subVectors( this.end, this.start );

		const startEnd2 = _startEnd.dot( _startEnd );
		const startEnd_startP = _startEnd.dot( _startP );

		let t = startEnd_startP / startEnd2;

		if ( clampToLine ) {

			t = clamp$1( t, 0, 1 );

		}

		return t;

	}

	closestPointToPoint( point, clampToLine, target ) {

		const t = this.closestPointToPointParameter( point, clampToLine );

		return this.delta( target ).multiplyScalar( t ).add( this.start );

	}

	applyMatrix4( matrix ) {

		this.start.applyMatrix4( matrix );
		this.end.applyMatrix4( matrix );

		return this;

	}

	equals( line ) {

		return line.start.equals( this.start ) && line.end.equals( this.end );

	}

	clone() {

		return new this.constructor().copy( this );

	}

}

const _vector$3 = /*@__PURE__*/ new Vector3();

class SpotLightHelper extends Object3D {

	constructor( light, color ) {

		super();
		this.light = light;
		this.light.updateMatrixWorld();

		this.matrix = light.matrixWorld;
		this.matrixAutoUpdate = false;

		this.color = color;

		const geometry = new BufferGeometry();

		const positions = [
			0, 0, 0, 	0, 0, 1,
			0, 0, 0, 	1, 0, 1,
			0, 0, 0,	- 1, 0, 1,
			0, 0, 0, 	0, 1, 1,
			0, 0, 0, 	0, - 1, 1
		];

		for ( let i = 0, j = 1, l = 32; i < l; i ++, j ++ ) {

			const p1 = ( i / l ) * Math.PI * 2;
			const p2 = ( j / l ) * Math.PI * 2;

			positions.push(
				Math.cos( p1 ), Math.sin( p1 ), 1,
				Math.cos( p2 ), Math.sin( p2 ), 1
			);

		}

		geometry.setAttribute( 'position', new Float32BufferAttribute( positions, 3 ) );

		const material = new LineBasicMaterial( { fog: false, toneMapped: false } );

		this.cone = new LineSegments( geometry, material );
		this.add( this.cone );

		this.update();

	}

	dispose() {

		this.cone.geometry.dispose();
		this.cone.material.dispose();

	}

	update() {

		this.light.updateMatrixWorld();

		const coneLength = this.light.distance ? this.light.distance : 1000;
		const coneWidth = coneLength * Math.tan( this.light.angle );

		this.cone.scale.set( coneWidth, coneWidth, coneLength );

		_vector$3.setFromMatrixPosition( this.light.target.matrixWorld );

		this.cone.lookAt( _vector$3 );

		if ( this.color !== undefined ) {

			this.cone.material.color.set( this.color );

		} else {

			this.cone.material.color.copy( this.light.color );

		}

	}

}

const _vector$2 = /*@__PURE__*/ new Vector3();
const _boneMatrix = /*@__PURE__*/ new Matrix4();
const _matrixWorldInv = /*@__PURE__*/ new Matrix4();


class SkeletonHelper extends LineSegments {

	constructor( object ) {

		const bones = getBoneList( object );

		const geometry = new BufferGeometry();

		const vertices = [];
		const colors = [];

		const color1 = new Color( 0, 0, 1 );
		const color2 = new Color( 0, 1, 0 );

		for ( let i = 0; i < bones.length; i ++ ) {

			const bone = bones[ i ];

			if ( bone.parent && bone.parent.isBone ) {

				vertices.push( 0, 0, 0 );
				vertices.push( 0, 0, 0 );
				colors.push( color1.r, color1.g, color1.b );
				colors.push( color2.r, color2.g, color2.b );

			}

		}

		geometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
		geometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );

		const material = new LineBasicMaterial( { vertexColors: true, depthTest: false, depthWrite: false, toneMapped: false, transparent: true } );

		super( geometry, material );

		this.type = 'SkeletonHelper';
		this.isSkeletonHelper = true;

		this.root = object;
		this.bones = bones;

		this.matrix = object.matrixWorld;
		this.matrixAutoUpdate = false;

	}

	updateMatrixWorld( force ) {

		const bones = this.bones;

		const geometry = this.geometry;
		const position = geometry.getAttribute( 'position' );

		_matrixWorldInv.copy( this.root.matrixWorld ).invert();

		for ( let i = 0, j = 0; i < bones.length; i ++ ) {

			const bone = bones[ i ];

			if ( bone.parent && bone.parent.isBone ) {

				_boneMatrix.multiplyMatrices( _matrixWorldInv, bone.matrixWorld );
				_vector$2.setFromMatrixPosition( _boneMatrix );
				position.setXYZ( j, _vector$2.x, _vector$2.y, _vector$2.z );

				_boneMatrix.multiplyMatrices( _matrixWorldInv, bone.parent.matrixWorld );
				_vector$2.setFromMatrixPosition( _boneMatrix );
				position.setXYZ( j + 1, _vector$2.x, _vector$2.y, _vector$2.z );

				j += 2;

			}

		}

		geometry.getAttribute( 'position' ).needsUpdate = true;

		super.updateMatrixWorld( force );

	}

}


function getBoneList( object ) {

	const boneList = [];

	if ( object.isBone === true ) {

		boneList.push( object );

	}

	for ( let i = 0; i < object.children.length; i ++ ) {

		boneList.push.apply( boneList, getBoneList( object.children[ i ] ) );

	}

	return boneList;

}

class PointLightHelper extends Mesh {

	constructor( light, sphereSize, color ) {

		const geometry = new SphereGeometry( sphereSize, 4, 2 );
		const material = new MeshBasicMaterial( { wireframe: true, fog: false, toneMapped: false } );

		super( geometry, material );

		this.light = light;
		this.light.updateMatrixWorld();

		this.color = color;

		this.type = 'PointLightHelper';

		this.matrix = this.light.matrixWorld;
		this.matrixAutoUpdate = false;

		this.update();


		/*
	// TODO: delete this comment?
	const distanceGeometry = new THREE.IcosahedronGeometry( 1, 2 );
	const distanceMaterial = new THREE.MeshBasicMaterial( { color: hexColor, fog: false, wireframe: true, opacity: 0.1, transparent: true } );

	this.lightSphere = new THREE.Mesh( bulbGeometry, bulbMaterial );
	this.lightDistance = new THREE.Mesh( distanceGeometry, distanceMaterial );

	const d = light.distance;

	if ( d === 0.0 ) {

		this.lightDistance.visible = false;

	} else {

		this.lightDistance.scale.set( d, d, d );

	}

	this.add( this.lightDistance );
	*/

	}

	dispose() {

		this.geometry.dispose();
		this.material.dispose();

	}

	update() {

		if ( this.color !== undefined ) {

			this.material.color.set( this.color );

		} else {

			this.material.color.copy( this.light.color );

		}

		/*
		const d = this.light.distance;

		if ( d === 0.0 ) {

			this.lightDistance.visible = false;

		} else {

			this.lightDistance.visible = true;
			this.lightDistance.scale.set( d, d, d );

		}
		*/

	}

}

const _vector$1 = /*@__PURE__*/ new Vector3();
const _color1 = /*@__PURE__*/ new Color();
const _color2 = /*@__PURE__*/ new Color();

class HemisphereLightHelper extends Object3D {

	constructor( light, size, color ) {

		super();
		this.light = light;
		this.light.updateMatrixWorld();

		this.matrix = light.matrixWorld;
		this.matrixAutoUpdate = false;

		this.color = color;

		const geometry = new OctahedronGeometry( size );
		geometry.rotateY( Math.PI * 0.5 );

		this.material = new MeshBasicMaterial( { wireframe: true, fog: false, toneMapped: false } );
		if ( this.color === undefined ) this.material.vertexColors = true;

		const position = geometry.getAttribute( 'position' );
		const colors = new Float32Array( position.count * 3 );

		geometry.setAttribute( 'color', new BufferAttribute( colors, 3 ) );

		this.add( new Mesh( geometry, this.material ) );

		this.update();

	}

	dispose() {

		this.children[ 0 ].geometry.dispose();
		this.children[ 0 ].material.dispose();

	}

	update() {

		const mesh = this.children[ 0 ];

		if ( this.color !== undefined ) {

			this.material.color.set( this.color );

		} else {

			const colors = mesh.geometry.getAttribute( 'color' );

			_color1.copy( this.light.color );
			_color2.copy( this.light.groundColor );

			for ( let i = 0, l = colors.count; i < l; i ++ ) {

				const color = ( i < ( l / 2 ) ) ? _color1 : _color2;

				colors.setXYZ( i, color.r, color.g, color.b );

			}

			colors.needsUpdate = true;

		}

		mesh.lookAt( _vector$1.setFromMatrixPosition( this.light.matrixWorld ).negate() );

	}

}

class GridHelper extends LineSegments {

	constructor( size = 10, divisions = 10, color1 = 0x444444, color2 = 0x888888 ) {

		color1 = new Color( color1 );
		color2 = new Color( color2 );

		const center = divisions / 2;
		const step = size / divisions;
		const halfSize = size / 2;

		const vertices = [], colors = [];

		for ( let i = 0, j = 0, k = - halfSize; i <= divisions; i ++, k += step ) {

			vertices.push( - halfSize, 0, k, halfSize, 0, k );
			vertices.push( k, 0, - halfSize, k, 0, halfSize );

			const color = i === center ? color1 : color2;

			color.toArray( colors, j ); j += 3;
			color.toArray( colors, j ); j += 3;
			color.toArray( colors, j ); j += 3;
			color.toArray( colors, j ); j += 3;

		}

		const geometry = new BufferGeometry();
		geometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
		geometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );

		const material = new LineBasicMaterial( { vertexColors: true, toneMapped: false } );

		super( geometry, material );

		this.type = 'GridHelper';

	}

}

class PolarGridHelper extends LineSegments {

	constructor( radius = 10, radials = 16, circles = 8, divisions = 64, color1 = 0x444444, color2 = 0x888888 ) {

		color1 = new Color( color1 );
		color2 = new Color( color2 );

		const vertices = [];
		const colors = [];

		// create the radials

		for ( let i = 0; i <= radials; i ++ ) {

			const v = ( i / radials ) * ( Math.PI * 2 );

			const x = Math.sin( v ) * radius;
			const z = Math.cos( v ) * radius;

			vertices.push( 0, 0, 0 );
			vertices.push( x, 0, z );

			const color = ( i & 1 ) ? color1 : color2;

			colors.push( color.r, color.g, color.b );
			colors.push( color.r, color.g, color.b );

		}

		// create the circles

		for ( let i = 0; i <= circles; i ++ ) {

			const color = ( i & 1 ) ? color1 : color2;

			const r = radius - ( radius / circles * i );

			for ( let j = 0; j < divisions; j ++ ) {

				// first vertex

				let v = ( j / divisions ) * ( Math.PI * 2 );

				let x = Math.sin( v ) * r;
				let z = Math.cos( v ) * r;

				vertices.push( x, 0, z );
				colors.push( color.r, color.g, color.b );

				// second vertex

				v = ( ( j + 1 ) / divisions ) * ( Math.PI * 2 );

				x = Math.sin( v ) * r;
				z = Math.cos( v ) * r;

				vertices.push( x, 0, z );
				colors.push( color.r, color.g, color.b );

			}

		}

		const geometry = new BufferGeometry();
		geometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
		geometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );

		const material = new LineBasicMaterial( { vertexColors: true, toneMapped: false } );

		super( geometry, material );

		this.type = 'PolarGridHelper';

	}

}

const _v1 = /*@__PURE__*/ new Vector3();
const _v2 = /*@__PURE__*/ new Vector3();
const _v3 = /*@__PURE__*/ new Vector3();

class DirectionalLightHelper extends Object3D {

	constructor( light, size, color ) {

		super();
		this.light = light;
		this.light.updateMatrixWorld();

		this.matrix = light.matrixWorld;
		this.matrixAutoUpdate = false;

		this.color = color;

		if ( size === undefined ) size = 1;

		let geometry = new BufferGeometry();
		geometry.setAttribute( 'position', new Float32BufferAttribute( [
			- size, size, 0,
			size, size, 0,
			size, - size, 0,
			- size, - size, 0,
			- size, size, 0
		], 3 ) );

		const material = new LineBasicMaterial( { fog: false, toneMapped: false } );

		this.lightPlane = new Line( geometry, material );
		this.add( this.lightPlane );

		geometry = new BufferGeometry();
		geometry.setAttribute( 'position', new Float32BufferAttribute( [ 0, 0, 0, 0, 0, 1 ], 3 ) );

		this.targetLine = new Line( geometry, material );
		this.add( this.targetLine );

		this.update();

	}

	dispose() {

		this.lightPlane.geometry.dispose();
		this.lightPlane.material.dispose();
		this.targetLine.geometry.dispose();
		this.targetLine.material.dispose();

	}

	update() {

		_v1.setFromMatrixPosition( this.light.matrixWorld );
		_v2.setFromMatrixPosition( this.light.target.matrixWorld );
		_v3.subVectors( _v2, _v1 );

		this.lightPlane.lookAt( _v2 );

		if ( this.color !== undefined ) {

			this.lightPlane.material.color.set( this.color );
			this.targetLine.material.color.set( this.color );

		} else {

			this.lightPlane.material.color.copy( this.light.color );
			this.targetLine.material.color.copy( this.light.color );

		}

		this.targetLine.lookAt( _v2 );
		this.targetLine.scale.z = _v3.length();

	}

}

const _vector = /*@__PURE__*/ new Vector3();
const _camera = /*@__PURE__*/ new Camera();

/**
 *	- shows frustum, line of sight and up of the camera
 *	- suitable for fast updates
 * 	- based on frustum visualization in lightgl.js shadowmap example
 *		https://github.com/evanw/lightgl.js/blob/master/tests/shadowmap.html
 */

class CameraHelper extends LineSegments {

	constructor( camera ) {

		const geometry = new BufferGeometry();
		const material = new LineBasicMaterial( { color: 0xffffff, vertexColors: true, toneMapped: false } );

		const vertices = [];
		const colors = [];

		const pointMap = {};

		// colors

		const colorFrustum = new Color( 0xffaa00 );
		const colorCone = new Color( 0xff0000 );
		const colorUp = new Color( 0x00aaff );
		const colorTarget = new Color( 0xffffff );
		const colorCross = new Color( 0x333333 );

		// near

		addLine( 'n1', 'n2', colorFrustum );
		addLine( 'n2', 'n4', colorFrustum );
		addLine( 'n4', 'n3', colorFrustum );
		addLine( 'n3', 'n1', colorFrustum );

		// far

		addLine( 'f1', 'f2', colorFrustum );
		addLine( 'f2', 'f4', colorFrustum );
		addLine( 'f4', 'f3', colorFrustum );
		addLine( 'f3', 'f1', colorFrustum );

		// sides

		addLine( 'n1', 'f1', colorFrustum );
		addLine( 'n2', 'f2', colorFrustum );
		addLine( 'n3', 'f3', colorFrustum );
		addLine( 'n4', 'f4', colorFrustum );

		// cone

		addLine( 'p', 'n1', colorCone );
		addLine( 'p', 'n2', colorCone );
		addLine( 'p', 'n3', colorCone );
		addLine( 'p', 'n4', colorCone );

		// up

		addLine( 'u1', 'u2', colorUp );
		addLine( 'u2', 'u3', colorUp );
		addLine( 'u3', 'u1', colorUp );

		// target

		addLine( 'c', 't', colorTarget );
		addLine( 'p', 'c', colorCross );

		// cross

		addLine( 'cn1', 'cn2', colorCross );
		addLine( 'cn3', 'cn4', colorCross );

		addLine( 'cf1', 'cf2', colorCross );
		addLine( 'cf3', 'cf4', colorCross );

		function addLine( a, b, color ) {

			addPoint( a, color );
			addPoint( b, color );

		}

		function addPoint( id, color ) {

			vertices.push( 0, 0, 0 );
			colors.push( color.r, color.g, color.b );

			if ( pointMap[ id ] === undefined ) {

				pointMap[ id ] = [];

			}

			pointMap[ id ].push( ( vertices.length / 3 ) - 1 );

		}

		geometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
		geometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );

		super( geometry, material );

		this.type = 'CameraHelper';

		this.camera = camera;
		if ( this.camera.updateProjectionMatrix ) this.camera.updateProjectionMatrix();

		this.matrix = camera.matrixWorld;
		this.matrixAutoUpdate = false;

		this.pointMap = pointMap;

		this.update();

	}

	update() {

		const geometry = this.geometry;
		const pointMap = this.pointMap;

		const w = 1, h = 1;

		// we need just camera projection matrix inverse
		// world matrix must be identity

		_camera.projectionMatrixInverse.copy( this.camera.projectionMatrixInverse );

		// center / target

		setPoint( 'c', pointMap, geometry, _camera, 0, 0, - 1 );
		setPoint( 't', pointMap, geometry, _camera, 0, 0, 1 );

		// near

		setPoint( 'n1', pointMap, geometry, _camera, - w, - h, - 1 );
		setPoint( 'n2', pointMap, geometry, _camera, w, - h, - 1 );
		setPoint( 'n3', pointMap, geometry, _camera, - w, h, - 1 );
		setPoint( 'n4', pointMap, geometry, _camera, w, h, - 1 );

		// far

		setPoint( 'f1', pointMap, geometry, _camera, - w, - h, 1 );
		setPoint( 'f2', pointMap, geometry, _camera, w, - h, 1 );
		setPoint( 'f3', pointMap, geometry, _camera, - w, h, 1 );
		setPoint( 'f4', pointMap, geometry, _camera, w, h, 1 );

		// up

		setPoint( 'u1', pointMap, geometry, _camera, w * 0.7, h * 1.1, - 1 );
		setPoint( 'u2', pointMap, geometry, _camera, - w * 0.7, h * 1.1, - 1 );
		setPoint( 'u3', pointMap, geometry, _camera, 0, h * 2, - 1 );

		// cross

		setPoint( 'cf1', pointMap, geometry, _camera, - w, 0, 1 );
		setPoint( 'cf2', pointMap, geometry, _camera, w, 0, 1 );
		setPoint( 'cf3', pointMap, geometry, _camera, 0, - h, 1 );
		setPoint( 'cf4', pointMap, geometry, _camera, 0, h, 1 );

		setPoint( 'cn1', pointMap, geometry, _camera, - w, 0, - 1 );
		setPoint( 'cn2', pointMap, geometry, _camera, w, 0, - 1 );
		setPoint( 'cn3', pointMap, geometry, _camera, 0, - h, - 1 );
		setPoint( 'cn4', pointMap, geometry, _camera, 0, h, - 1 );

		geometry.getAttribute( 'position' ).needsUpdate = true;

	}

	dispose() {

		this.geometry.dispose();
		this.material.dispose();

	}

}


function setPoint( point, pointMap, geometry, camera, x, y, z ) {

	_vector.set( x, y, z ).unproject( camera );

	const points = pointMap[ point ];

	if ( points !== undefined ) {

		const position = geometry.getAttribute( 'position' );

		for ( let i = 0, l = points.length; i < l; i ++ ) {

			position.setXYZ( points[ i ], _vector.x, _vector.y, _vector.z );

		}

	}

}

const _box = /*@__PURE__*/ new Box3();

class BoxHelper extends LineSegments {

	constructor( object, color = 0xffff00 ) {

		const indices = new Uint16Array( [ 0, 1, 1, 2, 2, 3, 3, 0, 4, 5, 5, 6, 6, 7, 7, 4, 0, 4, 1, 5, 2, 6, 3, 7 ] );
		const positions = new Float32Array( 8 * 3 );

		const geometry = new BufferGeometry();
		geometry.setIndex( new BufferAttribute( indices, 1 ) );
		geometry.setAttribute( 'position', new BufferAttribute( positions, 3 ) );

		super( geometry, new LineBasicMaterial( { color: color, toneMapped: false } ) );

		this.object = object;
		this.type = 'BoxHelper';

		this.matrixAutoUpdate = false;

		this.update();

	}

	update( object ) {

		if ( object !== undefined ) {

			console.warn( 'THREE.BoxHelper: .update() has no longer arguments.' );

		}

		if ( this.object !== undefined ) {

			_box.setFromObject( this.object );

		}

		if ( _box.isEmpty() ) return;

		const min = _box.min;
		const max = _box.max;

		/*
			5____4
		1/___0/|
		| 6__|_7
		2/___3/

		0: max.x, max.y, max.z
		1: min.x, max.y, max.z
		2: min.x, min.y, max.z
		3: max.x, min.y, max.z
		4: max.x, max.y, min.z
		5: min.x, max.y, min.z
		6: min.x, min.y, min.z
		7: max.x, min.y, min.z
		*/

		const position = this.geometry.attributes.position;
		const array = position.array;

		array[ 0 ] = max.x; array[ 1 ] = max.y; array[ 2 ] = max.z;
		array[ 3 ] = min.x; array[ 4 ] = max.y; array[ 5 ] = max.z;
		array[ 6 ] = min.x; array[ 7 ] = min.y; array[ 8 ] = max.z;
		array[ 9 ] = max.x; array[ 10 ] = min.y; array[ 11 ] = max.z;
		array[ 12 ] = max.x; array[ 13 ] = max.y; array[ 14 ] = min.z;
		array[ 15 ] = min.x; array[ 16 ] = max.y; array[ 17 ] = min.z;
		array[ 18 ] = min.x; array[ 19 ] = min.y; array[ 20 ] = min.z;
		array[ 21 ] = max.x; array[ 22 ] = min.y; array[ 23 ] = min.z;

		position.needsUpdate = true;

		this.geometry.computeBoundingSphere();


	}

	setFromObject( object ) {

		this.object = object;
		this.update();

		return this;

	}

	copy( source ) {

		LineSegments.prototype.copy.call( this, source );

		this.object = source.object;

		return this;

	}

}

class Box3Helper extends LineSegments {

	constructor( box, color = 0xffff00 ) {

		const indices = new Uint16Array( [ 0, 1, 1, 2, 2, 3, 3, 0, 4, 5, 5, 6, 6, 7, 7, 4, 0, 4, 1, 5, 2, 6, 3, 7 ] );

		const positions = [ 1, 1, 1, - 1, 1, 1, - 1, - 1, 1, 1, - 1, 1, 1, 1, - 1, - 1, 1, - 1, - 1, - 1, - 1, 1, - 1, - 1 ];

		const geometry = new BufferGeometry();

		geometry.setIndex( new BufferAttribute( indices, 1 ) );

		geometry.setAttribute( 'position', new Float32BufferAttribute( positions, 3 ) );

		super( geometry, new LineBasicMaterial( { color: color, toneMapped: false } ) );

		this.box = box;

		this.type = 'Box3Helper';

		this.geometry.computeBoundingSphere();

	}

	updateMatrixWorld( force ) {

		const box = this.box;

		if ( box.isEmpty() ) return;

		box.getCenter( this.position );

		box.getSize( this.scale );

		this.scale.multiplyScalar( 0.5 );

		super.updateMatrixWorld( force );

	}

}

class PlaneHelper extends Line {

	constructor( plane, size = 1, hex = 0xffff00 ) {

		const color = hex;

		const positions = [ 1, - 1, 1, - 1, 1, 1, - 1, - 1, 1, 1, 1, 1, - 1, 1, 1, - 1, - 1, 1, 1, - 1, 1, 1, 1, 1, 0, 0, 1, 0, 0, 0 ];

		const geometry = new BufferGeometry();
		geometry.setAttribute( 'position', new Float32BufferAttribute( positions, 3 ) );
		geometry.computeBoundingSphere();

		super( geometry, new LineBasicMaterial( { color: color, toneMapped: false } ) );

		this.type = 'PlaneHelper';

		this.plane = plane;

		this.size = size;

		const positions2 = [ 1, 1, 1, - 1, 1, 1, - 1, - 1, 1, 1, 1, 1, - 1, - 1, 1, 1, - 1, 1 ];

		const geometry2 = new BufferGeometry();
		geometry2.setAttribute( 'position', new Float32BufferAttribute( positions2, 3 ) );
		geometry2.computeBoundingSphere();

		this.add( new Mesh( geometry2, new MeshBasicMaterial( { color: color, opacity: 0.2, transparent: true, depthWrite: false, toneMapped: false } ) ) );

	}

	updateMatrixWorld( force ) {

		let scale = - this.plane.constant;

		if ( Math.abs( scale ) < 1e-8 ) scale = 1e-8; // sign does not matter

		this.scale.set( 0.5 * this.size, 0.5 * this.size, scale );

		this.children[ 0 ].material.side = ( scale < 0 ) ? BackSide : FrontSide; // renderer flips side when determinant < 0; flipping not wanted here

		this.lookAt( this.plane.normal );

		super.updateMatrixWorld( force );

	}

}

const _axis = /*@__PURE__*/ new Vector3();
let _lineGeometry, _coneGeometry;

class ArrowHelper extends Object3D {

	// dir is assumed to be normalized

	constructor( dir = new Vector3( 0, 0, 1 ), origin = new Vector3( 0, 0, 0 ), length = 1, color = 0xffff00, headLength = length * 0.2, headWidth = headLength * 0.2 ) {

		super();

		this.type = 'ArrowHelper';

		if ( _lineGeometry === undefined ) {

			_lineGeometry = new BufferGeometry();
			_lineGeometry.setAttribute( 'position', new Float32BufferAttribute( [ 0, 0, 0, 0, 1, 0 ], 3 ) );

			_coneGeometry = new CylinderGeometry( 0, 0.5, 1, 5, 1 );
			_coneGeometry.translate( 0, - 0.5, 0 );

		}

		this.position.copy( origin );

		this.line = new Line( _lineGeometry, new LineBasicMaterial( { color: color, toneMapped: false } ) );
		this.line.matrixAutoUpdate = false;
		this.add( this.line );

		this.cone = new Mesh( _coneGeometry, new MeshBasicMaterial( { color: color, toneMapped: false } ) );
		this.cone.matrixAutoUpdate = false;
		this.add( this.cone );

		this.setDirection( dir );
		this.setLength( length, headLength, headWidth );

	}

	setDirection( dir ) {

		// dir is assumed to be normalized

		if ( dir.y > 0.99999 ) {

			this.quaternion.set( 0, 0, 0, 1 );

		} else if ( dir.y < - 0.99999 ) {

			this.quaternion.set( 1, 0, 0, 0 );

		} else {

			_axis.set( dir.z, 0, - dir.x ).normalize();

			const radians = Math.acos( dir.y );

			this.quaternion.setFromAxisAngle( _axis, radians );

		}

	}

	setLength( length, headLength = length * 0.2, headWidth = headLength * 0.2 ) {

		this.line.scale.set( 1, Math.max( 0.0001, length - headLength ), 1 ); // see #17458
		this.line.updateMatrix();

		this.cone.scale.set( headWidth, headLength, headWidth );
		this.cone.position.y = length;
		this.cone.updateMatrix();

	}

	setColor( color ) {

		this.line.material.color.set( color );
		this.cone.material.color.set( color );

	}

	copy( source ) {

		super.copy( source, false );

		this.line.copy( source.line );
		this.cone.copy( source.cone );

		return this;

	}

}

class AxesHelper extends LineSegments {

	constructor( size = 1 ) {

		const vertices = [
			0, 0, 0,	size, 0, 0,
			0, 0, 0,	0, size, 0,
			0, 0, 0,	0, 0, size
		];

		const colors = [
			1, 0, 0,	1, 0.6, 0,
			0, 1, 0,	0.6, 1, 0,
			0, 0, 1,	0, 0.6, 1
		];

		const geometry = new BufferGeometry();
		geometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
		geometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );

		const material = new LineBasicMaterial( { vertexColors: true, toneMapped: false } );

		super( geometry, material );

		this.type = 'AxesHelper';

	}

	setColors( xAxisColor, yAxisColor, zAxisColor ) {

		const color = new Color();
		const array = this.geometry.attributes.color.array;

		color.set( xAxisColor );
		color.toArray( array, 0 );
		color.toArray( array, 3 );

		color.set( yAxisColor );
		color.toArray( array, 6 );
		color.toArray( array, 9 );

		color.set( zAxisColor );
		color.toArray( array, 12 );
		color.toArray( array, 15 );

		this.geometry.attributes.color.needsUpdate = true;

		return this;

	}

	dispose() {

		this.geometry.dispose();
		this.material.dispose();

	}

}

class ShapePath {

	constructor() {

		this.type = 'ShapePath';

		this.color = new Color();

		this.subPaths = [];
		this.currentPath = null;

	}

	moveTo( x, y ) {

		this.currentPath = new Path();
		this.subPaths.push( this.currentPath );
		this.currentPath.moveTo( x, y );

		return this;

	}

	lineTo( x, y ) {

		this.currentPath.lineTo( x, y );

		return this;

	}

	quadraticCurveTo( aCPx, aCPy, aX, aY ) {

		this.currentPath.quadraticCurveTo( aCPx, aCPy, aX, aY );

		return this;

	}

	bezierCurveTo( aCP1x, aCP1y, aCP2x, aCP2y, aX, aY ) {

		this.currentPath.bezierCurveTo( aCP1x, aCP1y, aCP2x, aCP2y, aX, aY );

		return this;

	}

	splineThru( pts ) {

		this.currentPath.splineThru( pts );

		return this;

	}

	toShapes( isCCW, noHoles ) {

		function toShapesNoHoles( inSubpaths ) {

			const shapes = [];

			for ( let i = 0, l = inSubpaths.length; i < l; i ++ ) {

				const tmpPath = inSubpaths[ i ];

				const tmpShape = new Shape();
				tmpShape.curves = tmpPath.curves;

				shapes.push( tmpShape );

			}

			return shapes;

		}

		function isPointInsidePolygon( inPt, inPolygon ) {

			const polyLen = inPolygon.length;

			// inPt on polygon contour => immediate success    or
			// toggling of inside/outside at every single! intersection point of an edge
			//  with the horizontal line through inPt, left of inPt
			//  not counting lowerY endpoints of edges and whole edges on that line
			let inside = false;
			for ( let p = polyLen - 1, q = 0; q < polyLen; p = q ++ ) {

				let edgeLowPt = inPolygon[ p ];
				let edgeHighPt = inPolygon[ q ];

				let edgeDx = edgeHighPt.x - edgeLowPt.x;
				let edgeDy = edgeHighPt.y - edgeLowPt.y;

				if ( Math.abs( edgeDy ) > Number.EPSILON ) {

					// not parallel
					if ( edgeDy < 0 ) {

						edgeLowPt = inPolygon[ q ]; edgeDx = - edgeDx;
						edgeHighPt = inPolygon[ p ]; edgeDy = - edgeDy;

					}

					if ( ( inPt.y < edgeLowPt.y ) || ( inPt.y > edgeHighPt.y ) ) 		continue;

					if ( inPt.y === edgeLowPt.y ) {

						if ( inPt.x === edgeLowPt.x )		return	true;		// inPt is on contour ?
						// continue;				// no intersection or edgeLowPt => doesn't count !!!

					} else {

						const perpEdge = edgeDy * ( inPt.x - edgeLowPt.x ) - edgeDx * ( inPt.y - edgeLowPt.y );
						if ( perpEdge === 0 )				return	true;		// inPt is on contour ?
						if ( perpEdge < 0 ) 				continue;
						inside = ! inside;		// true intersection left of inPt

					}

				} else {

					// parallel or collinear
					if ( inPt.y !== edgeLowPt.y ) 		continue;			// parallel
					// edge lies on the same horizontal line as inPt
					if ( ( ( edgeHighPt.x <= inPt.x ) && ( inPt.x <= edgeLowPt.x ) ) ||
						 ( ( edgeLowPt.x <= inPt.x ) && ( inPt.x <= edgeHighPt.x ) ) )		return	true;	// inPt: Point on contour !
					// continue;

				}

			}

			return	inside;

		}

		const isClockWise = ShapeUtils.isClockWise;

		const subPaths = this.subPaths;
		if ( subPaths.length === 0 ) return [];

		if ( noHoles === true )	return	toShapesNoHoles( subPaths );


		let solid, tmpPath, tmpShape;
		const shapes = [];

		if ( subPaths.length === 1 ) {

			tmpPath = subPaths[ 0 ];
			tmpShape = new Shape();
			tmpShape.curves = tmpPath.curves;
			shapes.push( tmpShape );
			return shapes;

		}

		let holesFirst = ! isClockWise( subPaths[ 0 ].getPoints() );
		holesFirst = isCCW ? ! holesFirst : holesFirst;

		// console.log("Holes first", holesFirst);

		const betterShapeHoles = [];
		const newShapes = [];
		let newShapeHoles = [];
		let mainIdx = 0;
		let tmpPoints;

		newShapes[ mainIdx ] = undefined;
		newShapeHoles[ mainIdx ] = [];

		for ( let i = 0, l = subPaths.length; i < l; i ++ ) {

			tmpPath = subPaths[ i ];
			tmpPoints = tmpPath.getPoints();
			solid = isClockWise( tmpPoints );
			solid = isCCW ? ! solid : solid;

			if ( solid ) {

				if ( ( ! holesFirst ) && ( newShapes[ mainIdx ] ) )	mainIdx ++;

				newShapes[ mainIdx ] = { s: new Shape(), p: tmpPoints };
				newShapes[ mainIdx ].s.curves = tmpPath.curves;

				if ( holesFirst )	mainIdx ++;
				newShapeHoles[ mainIdx ] = [];

				//console.log('cw', i);

			} else {

				newShapeHoles[ mainIdx ].push( { h: tmpPath, p: tmpPoints[ 0 ] } );

				//console.log('ccw', i);

			}

		}

		// only Holes? -> probably all Shapes with wrong orientation
		if ( ! newShapes[ 0 ] )	return	toShapesNoHoles( subPaths );


		if ( newShapes.length > 1 ) {

			let ambiguous = false;
			let toChange = 0;

			for ( let sIdx = 0, sLen = newShapes.length; sIdx < sLen; sIdx ++ ) {

				betterShapeHoles[ sIdx ] = [];

			}

			for ( let sIdx = 0, sLen = newShapes.length; sIdx < sLen; sIdx ++ ) {

				const sho = newShapeHoles[ sIdx ];

				for ( let hIdx = 0; hIdx < sho.length; hIdx ++ ) {

					const ho = sho[ hIdx ];
					let hole_unassigned = true;

					for ( let s2Idx = 0; s2Idx < newShapes.length; s2Idx ++ ) {

						if ( isPointInsidePolygon( ho.p, newShapes[ s2Idx ].p ) ) {

							if ( sIdx !== s2Idx )	toChange ++;

							if ( hole_unassigned ) {

								hole_unassigned = false;
								betterShapeHoles[ s2Idx ].push( ho );

							} else {

								ambiguous = true;

							}

						}

					}

					if ( hole_unassigned ) {

						betterShapeHoles[ sIdx ].push( ho );

					}

				}

			}

			if ( toChange > 0 && ambiguous === false ) {

				newShapeHoles = betterShapeHoles;

			}

		}

		let tmpHoles;

		for ( let i = 0, il = newShapes.length; i < il; i ++ ) {

			tmpShape = newShapes[ i ].s;
			shapes.push( tmpShape );
			tmpHoles = newShapeHoles[ i ];

			for ( let j = 0, jl = tmpHoles.length; j < jl; j ++ ) {

				tmpShape.holes.push( tmpHoles[ j ].h );

			}

		}

		//console.log("shape", shapes);

		return shapes;

	}

}

const _floatView = new Float32Array( 1 );
const _int32View = new Int32Array( _floatView.buffer );

class DataUtils {

	// Converts float32 to float16 (stored as uint16 value).

	static toHalfFloat( val ) {

		if ( val > 65504 ) {

			console.warn( 'THREE.DataUtils.toHalfFloat(): value exceeds 65504.' );

			val = 65504; // maximum representable value in float16

		}

		// Source: http://gamedev.stackexchange.com/questions/17326/conversion-of-a-number-from-single-precision-floating-point-representation-to-a/17410#17410

		/* This method is faster than the OpenEXR implementation (very often
		* used, eg. in Ogre), with the additional benefit of rounding, inspired
		* by James Tursa?s half-precision code. */

		_floatView[ 0 ] = val;
		const x = _int32View[ 0 ];

		let bits = ( x >> 16 ) & 0x8000; /* Get the sign */
		let m = ( x >> 12 ) & 0x07ff; /* Keep one extra bit for rounding */
		const e = ( x >> 23 ) & 0xff; /* Using int is faster here */

		/* If zero, or denormal, or exponent underflows too much for a denormal
			* half, return signed zero. */
		if ( e < 103 ) return bits;

		/* If NaN, return NaN. If Inf or exponent overflow, return Inf. */
		if ( e > 142 ) {

			bits |= 0x7c00;
			/* If exponent was 0xff and one mantissa bit was set, it means NaN,
						* not Inf, so make sure we set one mantissa bit too. */
			bits |= ( ( e == 255 ) ? 0 : 1 ) && ( x & 0x007fffff );
			return bits;

		}

		/* If exponent underflows but not too much, return a denormal */
		if ( e < 113 ) {

			m |= 0x0800;
			/* Extra rounding may overflow and set mantissa to 0 and exponent
				* to 1, which is OK. */
			bits |= ( m >> ( 114 - e ) ) + ( ( m >> ( 113 - e ) ) & 1 );
			return bits;

		}

		bits |= ( ( e - 112 ) << 10 ) | ( m >> 1 );
		/* Extra rounding. An overflow will set mantissa to 0 and increment
			* the exponent, which is OK. */
		bits += m & 1;
		return bits;

	}

}

const LineStrip = 0;
const LinePieces = 1;
const NoColors = 0;
const FaceColors = 1;
const VertexColors = 2;

function MeshFaceMaterial( materials ) {

	console.warn( 'THREE.MeshFaceMaterial has been removed. Use an Array instead.' );
	return materials;

}

function MultiMaterial( materials = [] ) {

	console.warn( 'THREE.MultiMaterial has been removed. Use an Array instead.' );
	materials.isMultiMaterial = true;
	materials.materials = materials;
	materials.clone = function () {

		return materials.slice();

	};

	return materials;

}

function PointCloud( geometry, material ) {

	console.warn( 'THREE.PointCloud has been renamed to THREE.Points.' );
	return new Points( geometry, material );

}

function Particle( material ) {

	console.warn( 'THREE.Particle has been renamed to THREE.Sprite.' );
	return new Sprite( material );

}

function ParticleSystem( geometry, material ) {

	console.warn( 'THREE.ParticleSystem has been renamed to THREE.Points.' );
	return new Points( geometry, material );

}

function PointCloudMaterial( parameters ) {

	console.warn( 'THREE.PointCloudMaterial has been renamed to THREE.PointsMaterial.' );
	return new PointsMaterial( parameters );

}

function ParticleBasicMaterial( parameters ) {

	console.warn( 'THREE.ParticleBasicMaterial has been renamed to THREE.PointsMaterial.' );
	return new PointsMaterial( parameters );

}

function ParticleSystemMaterial( parameters ) {

	console.warn( 'THREE.ParticleSystemMaterial has been renamed to THREE.PointsMaterial.' );
	return new PointsMaterial( parameters );

}

function Vertex( x, y, z ) {

	console.warn( 'THREE.Vertex has been removed. Use THREE.Vector3 instead.' );
	return new Vector3( x, y, z );

}

//

function DynamicBufferAttribute( array, itemSize ) {

	console.warn( 'THREE.DynamicBufferAttribute has been removed. Use new THREE.BufferAttribute().setUsage( THREE.DynamicDrawUsage ) instead.' );
	return new BufferAttribute( array, itemSize ).setUsage( DynamicDrawUsage );

}

function Int8Attribute( array, itemSize ) {

	console.warn( 'THREE.Int8Attribute has been removed. Use new THREE.Int8BufferAttribute() instead.' );
	return new Int8BufferAttribute( array, itemSize );

}

function Uint8Attribute( array, itemSize ) {

	console.warn( 'THREE.Uint8Attribute has been removed. Use new THREE.Uint8BufferAttribute() instead.' );
	return new Uint8BufferAttribute( array, itemSize );

}

function Uint8ClampedAttribute( array, itemSize ) {

	console.warn( 'THREE.Uint8ClampedAttribute has been removed. Use new THREE.Uint8ClampedBufferAttribute() instead.' );
	return new Uint8ClampedBufferAttribute( array, itemSize );

}

function Int16Attribute( array, itemSize ) {

	console.warn( 'THREE.Int16Attribute has been removed. Use new THREE.Int16BufferAttribute() instead.' );
	return new Int16BufferAttribute( array, itemSize );

}

function Uint16Attribute( array, itemSize ) {

	console.warn( 'THREE.Uint16Attribute has been removed. Use new THREE.Uint16BufferAttribute() instead.' );
	return new Uint16BufferAttribute( array, itemSize );

}

function Int32Attribute( array, itemSize ) {

	console.warn( 'THREE.Int32Attribute has been removed. Use new THREE.Int32BufferAttribute() instead.' );
	return new Int32BufferAttribute( array, itemSize );

}

function Uint32Attribute( array, itemSize ) {

	console.warn( 'THREE.Uint32Attribute has been removed. Use new THREE.Uint32BufferAttribute() instead.' );
	return new Uint32BufferAttribute( array, itemSize );

}

function Float32Attribute( array, itemSize ) {

	console.warn( 'THREE.Float32Attribute has been removed. Use new THREE.Float32BufferAttribute() instead.' );
	return new Float32BufferAttribute( array, itemSize );

}

function Float64Attribute( array, itemSize ) {

	console.warn( 'THREE.Float64Attribute has been removed. Use new THREE.Float64BufferAttribute() instead.' );
	return new Float64BufferAttribute( array, itemSize );

}

//

Curve.create = function ( construct, getPoint ) {

	console.log( 'THREE.Curve.create() has been deprecated' );

	construct.prototype = Object.create( Curve.prototype );
	construct.prototype.constructor = construct;
	construct.prototype.getPoint = getPoint;

	return construct;

};

//

Path.prototype.fromPoints = function ( points ) {

	console.warn( 'THREE.Path: .fromPoints() has been renamed to .setFromPoints().' );
	return this.setFromPoints( points );

};

//

function AxisHelper( size ) {

	console.warn( 'THREE.AxisHelper has been renamed to THREE.AxesHelper.' );
	return new AxesHelper( size );

}

function BoundingBoxHelper( object, color ) {

	console.warn( 'THREE.BoundingBoxHelper has been deprecated. Creating a THREE.BoxHelper instead.' );
	return new BoxHelper( object, color );

}

function EdgesHelper( object, hex ) {

	console.warn( 'THREE.EdgesHelper has been removed. Use THREE.EdgesGeometry instead.' );
	return new LineSegments( new EdgesGeometry( object.geometry ), new LineBasicMaterial( { color: hex !== undefined ? hex : 0xffffff } ) );

}

GridHelper.prototype.setColors = function () {

	console.error( 'THREE.GridHelper: setColors() has been deprecated, pass them in the constructor instead.' );

};

SkeletonHelper.prototype.update = function () {

	console.error( 'THREE.SkeletonHelper: update() no longer needs to be called.' );

};

function WireframeHelper( object, hex ) {

	console.warn( 'THREE.WireframeHelper has been removed. Use THREE.WireframeGeometry instead.' );
	return new LineSegments( new WireframeGeometry( object.geometry ), new LineBasicMaterial( { color: hex !== undefined ? hex : 0xffffff } ) );

}

//

Loader.prototype.extractUrlBase = function ( url ) {

	console.warn( 'THREE.Loader: .extractUrlBase() has been deprecated. Use THREE.LoaderUtils.extractUrlBase() instead.' );
	return LoaderUtils.extractUrlBase( url );

};

Loader.Handlers = {

	add: function ( /* regex, loader */ ) {

		console.error( 'THREE.Loader: Handlers.add() has been removed. Use LoadingManager.addHandler() instead.' );

	},

	get: function ( /* file */ ) {

		console.error( 'THREE.Loader: Handlers.get() has been removed. Use LoadingManager.getHandler() instead.' );

	}

};

function XHRLoader( manager ) {

	console.warn( 'THREE.XHRLoader has been renamed to THREE.FileLoader.' );
	return new FileLoader( manager );

}

function BinaryTextureLoader( manager ) {

	console.warn( 'THREE.BinaryTextureLoader has been renamed to THREE.DataTextureLoader.' );
	return new DataTextureLoader( manager );

}

//

Box2.prototype.center = function ( optionalTarget ) {

	console.warn( 'THREE.Box2: .center() has been renamed to .getCenter().' );
	return this.getCenter( optionalTarget );

};

Box2.prototype.empty = function () {

	console.warn( 'THREE.Box2: .empty() has been renamed to .isEmpty().' );
	return this.isEmpty();

};

Box2.prototype.isIntersectionBox = function ( box ) {

	console.warn( 'THREE.Box2: .isIntersectionBox() has been renamed to .intersectsBox().' );
	return this.intersectsBox( box );

};

Box2.prototype.size = function ( optionalTarget ) {

	console.warn( 'THREE.Box2: .size() has been renamed to .getSize().' );
	return this.getSize( optionalTarget );

};

//

Box3.prototype.center = function ( optionalTarget ) {

	console.warn( 'THREE.Box3: .center() has been renamed to .getCenter().' );
	return this.getCenter( optionalTarget );

};

Box3.prototype.empty = function () {

	console.warn( 'THREE.Box3: .empty() has been renamed to .isEmpty().' );
	return this.isEmpty();

};

Box3.prototype.isIntersectionBox = function ( box ) {

	console.warn( 'THREE.Box3: .isIntersectionBox() has been renamed to .intersectsBox().' );
	return this.intersectsBox( box );

};

Box3.prototype.isIntersectionSphere = function ( sphere ) {

	console.warn( 'THREE.Box3: .isIntersectionSphere() has been renamed to .intersectsSphere().' );
	return this.intersectsSphere( sphere );

};

Box3.prototype.size = function ( optionalTarget ) {

	console.warn( 'THREE.Box3: .size() has been renamed to .getSize().' );
	return this.getSize( optionalTarget );

};

//

Euler.prototype.toVector3 = function () {

	console.error( 'THREE.Euler: .toVector3() has been removed. Use Vector3.setFromEuler() instead' );

};


//

Sphere.prototype.empty = function () {

	console.warn( 'THREE.Sphere: .empty() has been renamed to .isEmpty().' );
	return this.isEmpty();

};

//

Frustum.prototype.setFromMatrix = function ( m ) {

	console.warn( 'THREE.Frustum: .setFromMatrix() has been renamed to .setFromProjectionMatrix().' );
	return this.setFromProjectionMatrix( m );

};

//

Line3.prototype.center = function ( optionalTarget ) {

	console.warn( 'THREE.Line3: .center() has been renamed to .getCenter().' );
	return this.getCenter( optionalTarget );

};

//

Matrix3.prototype.flattenToArrayOffset = function ( array, offset ) {

	console.warn( 'THREE.Matrix3: .flattenToArrayOffset() has been deprecated. Use .toArray() instead.' );
	return this.toArray( array, offset );

};

Matrix3.prototype.multiplyVector3 = function ( vector ) {

	console.warn( 'THREE.Matrix3: .multiplyVector3() has been removed. Use vector.applyMatrix3( matrix ) instead.' );
	return vector.applyMatrix3( this );

};

Matrix3.prototype.multiplyVector3Array = function ( /* a */ ) {

	console.error( 'THREE.Matrix3: .multiplyVector3Array() has been removed.' );

};

Matrix3.prototype.applyToBufferAttribute = function ( attribute ) {

	console.warn( 'THREE.Matrix3: .applyToBufferAttribute() has been removed. Use attribute.applyMatrix3( matrix ) instead.' );
	return attribute.applyMatrix3( this );

};

Matrix3.prototype.applyToVector3Array = function ( /* array, offset, length */ ) {

	console.error( 'THREE.Matrix3: .applyToVector3Array() has been removed.' );

};

Matrix3.prototype.getInverse = function ( matrix ) {

	console.warn( 'THREE.Matrix3: .getInverse() has been removed. Use matrixInv.copy( matrix ).invert(); instead.' );
	return this.copy( matrix ).invert();

};

//

Matrix4.prototype.extractPosition = function ( m ) {

	console.warn( 'THREE.Matrix4: .extractPosition() has been renamed to .copyPosition().' );
	return this.copyPosition( m );

};

Matrix4.prototype.flattenToArrayOffset = function ( array, offset ) {

	console.warn( 'THREE.Matrix4: .flattenToArrayOffset() has been deprecated. Use .toArray() instead.' );
	return this.toArray( array, offset );

};

Matrix4.prototype.getPosition = function () {

	console.warn( 'THREE.Matrix4: .getPosition() has been removed. Use Vector3.setFromMatrixPosition( matrix ) instead.' );
	return new Vector3().setFromMatrixColumn( this, 3 );

};

Matrix4.prototype.setRotationFromQuaternion = function ( q ) {

	console.warn( 'THREE.Matrix4: .setRotationFromQuaternion() has been renamed to .makeRotationFromQuaternion().' );
	return this.makeRotationFromQuaternion( q );

};

Matrix4.prototype.multiplyToArray = function () {

	console.warn( 'THREE.Matrix4: .multiplyToArray() has been removed.' );

};

Matrix4.prototype.multiplyVector3 = function ( vector ) {

	console.warn( 'THREE.Matrix4: .multiplyVector3() has been removed. Use vector.applyMatrix4( matrix ) instead.' );
	return vector.applyMatrix4( this );

};

Matrix4.prototype.multiplyVector4 = function ( vector ) {

	console.warn( 'THREE.Matrix4: .multiplyVector4() has been removed. Use vector.applyMatrix4( matrix ) instead.' );
	return vector.applyMatrix4( this );

};

Matrix4.prototype.multiplyVector3Array = function ( /* a */ ) {

	console.error( 'THREE.Matrix4: .multiplyVector3Array() has been removed.' );

};

Matrix4.prototype.rotateAxis = function ( v ) {

	console.warn( 'THREE.Matrix4: .rotateAxis() has been removed. Use Vector3.transformDirection( matrix ) instead.' );
	v.transformDirection( this );

};

Matrix4.prototype.crossVector = function ( vector ) {

	console.warn( 'THREE.Matrix4: .crossVector() has been removed. Use vector.applyMatrix4( matrix ) instead.' );
	return vector.applyMatrix4( this );

};

Matrix4.prototype.translate = function () {

	console.error( 'THREE.Matrix4: .translate() has been removed.' );

};

Matrix4.prototype.rotateX = function () {

	console.error( 'THREE.Matrix4: .rotateX() has been removed.' );

};

Matrix4.prototype.rotateY = function () {

	console.error( 'THREE.Matrix4: .rotateY() has been removed.' );

};

Matrix4.prototype.rotateZ = function () {

	console.error( 'THREE.Matrix4: .rotateZ() has been removed.' );

};

Matrix4.prototype.rotateByAxis = function () {

	console.error( 'THREE.Matrix4: .rotateByAxis() has been removed.' );

};

Matrix4.prototype.applyToBufferAttribute = function ( attribute ) {

	console.warn( 'THREE.Matrix4: .applyToBufferAttribute() has been removed. Use attribute.applyMatrix4( matrix ) instead.' );
	return attribute.applyMatrix4( this );

};

Matrix4.prototype.applyToVector3Array = function ( /* array, offset, length */ ) {

	console.error( 'THREE.Matrix4: .applyToVector3Array() has been removed.' );

};

Matrix4.prototype.makeFrustum = function ( left, right, bottom, top, near, far ) {

	console.warn( 'THREE.Matrix4: .makeFrustum() has been removed. Use .makePerspective( left, right, top, bottom, near, far ) instead.' );
	return this.makePerspective( left, right, top, bottom, near, far );

};

Matrix4.prototype.getInverse = function ( matrix ) {

	console.warn( 'THREE.Matrix4: .getInverse() has been removed. Use matrixInv.copy( matrix ).invert(); instead.' );
	return this.copy( matrix ).invert();

};

//

Plane.prototype.isIntersectionLine = function ( line ) {

	console.warn( 'THREE.Plane: .isIntersectionLine() has been renamed to .intersectsLine().' );
	return this.intersectsLine( line );

};

//

Quaternion.prototype.multiplyVector3 = function ( vector ) {

	console.warn( 'THREE.Quaternion: .multiplyVector3() has been removed. Use is now vector.applyQuaternion( quaternion ) instead.' );
	return vector.applyQuaternion( this );

};

Quaternion.prototype.inverse = function ( ) {

	console.warn( 'THREE.Quaternion: .inverse() has been renamed to invert().' );
	return this.invert();

};

//

Ray.prototype.isIntersectionBox = function ( box ) {

	console.warn( 'THREE.Ray: .isIntersectionBox() has been renamed to .intersectsBox().' );
	return this.intersectsBox( box );

};

Ray.prototype.isIntersectionPlane = function ( plane ) {

	console.warn( 'THREE.Ray: .isIntersectionPlane() has been renamed to .intersectsPlane().' );
	return this.intersectsPlane( plane );

};

Ray.prototype.isIntersectionSphere = function ( sphere ) {

	console.warn( 'THREE.Ray: .isIntersectionSphere() has been renamed to .intersectsSphere().' );
	return this.intersectsSphere( sphere );

};

//

Triangle.prototype.area = function () {

	console.warn( 'THREE.Triangle: .area() has been renamed to .getArea().' );
	return this.getArea();

};

Triangle.prototype.barycoordFromPoint = function ( point, target ) {

	console.warn( 'THREE.Triangle: .barycoordFromPoint() has been renamed to .getBarycoord().' );
	return this.getBarycoord( point, target );

};

Triangle.prototype.midpoint = function ( target ) {

	console.warn( 'THREE.Triangle: .midpoint() has been renamed to .getMidpoint().' );
	return this.getMidpoint( target );

};

Triangle.prototypenormal = function ( target ) {

	console.warn( 'THREE.Triangle: .normal() has been renamed to .getNormal().' );
	return this.getNormal( target );

};

Triangle.prototype.plane = function ( target ) {

	console.warn( 'THREE.Triangle: .plane() has been renamed to .getPlane().' );
	return this.getPlane( target );

};

Triangle.barycoordFromPoint = function ( point, a, b, c, target ) {

	console.warn( 'THREE.Triangle: .barycoordFromPoint() has been renamed to .getBarycoord().' );
	return Triangle.getBarycoord( point, a, b, c, target );

};

Triangle.normal = function ( a, b, c, target ) {

	console.warn( 'THREE.Triangle: .normal() has been renamed to .getNormal().' );
	return Triangle.getNormal( a, b, c, target );

};

//

Shape.prototype.extractAllPoints = function ( divisions ) {

	console.warn( 'THREE.Shape: .extractAllPoints() has been removed. Use .extractPoints() instead.' );
	return this.extractPoints( divisions );

};

Shape.prototype.extrude = function ( options ) {

	console.warn( 'THREE.Shape: .extrude() has been removed. Use ExtrudeGeometry() instead.' );
	return new ExtrudeGeometry( this, options );

};

Shape.prototype.makeGeometry = function ( options ) {

	console.warn( 'THREE.Shape: .makeGeometry() has been removed. Use ShapeGeometry() instead.' );
	return new ShapeGeometry( this, options );

};

//

Vector2.prototype.fromAttribute = function ( attribute, index, offset ) {

	console.warn( 'THREE.Vector2: .fromAttribute() has been renamed to .fromBufferAttribute().' );
	return this.fromBufferAttribute( attribute, index, offset );

};

Vector2.prototype.distanceToManhattan = function ( v ) {

	console.warn( 'THREE.Vector2: .distanceToManhattan() has been renamed to .manhattanDistanceTo().' );
	return this.manhattanDistanceTo( v );

};

Vector2.prototype.lengthManhattan = function () {

	console.warn( 'THREE.Vector2: .lengthManhattan() has been renamed to .manhattanLength().' );
	return this.manhattanLength();

};

//

Vector3.prototype.setEulerFromRotationMatrix = function () {

	console.error( 'THREE.Vector3: .setEulerFromRotationMatrix() has been removed. Use Euler.setFromRotationMatrix() instead.' );

};

Vector3.prototype.setEulerFromQuaternion = function () {

	console.error( 'THREE.Vector3: .setEulerFromQuaternion() has been removed. Use Euler.setFromQuaternion() instead.' );

};

Vector3.prototype.getPositionFromMatrix = function ( m ) {

	console.warn( 'THREE.Vector3: .getPositionFromMatrix() has been renamed to .setFromMatrixPosition().' );
	return this.setFromMatrixPosition( m );

};

Vector3.prototype.getScaleFromMatrix = function ( m ) {

	console.warn( 'THREE.Vector3: .getScaleFromMatrix() has been renamed to .setFromMatrixScale().' );
	return this.setFromMatrixScale( m );

};

Vector3.prototype.getColumnFromMatrix = function ( index, matrix ) {

	console.warn( 'THREE.Vector3: .getColumnFromMatrix() has been renamed to .setFromMatrixColumn().' );
	return this.setFromMatrixColumn( matrix, index );

};

Vector3.prototype.applyProjection = function ( m ) {

	console.warn( 'THREE.Vector3: .applyProjection() has been removed. Use .applyMatrix4( m ) instead.' );
	return this.applyMatrix4( m );

};

Vector3.prototype.fromAttribute = function ( attribute, index, offset ) {

	console.warn( 'THREE.Vector3: .fromAttribute() has been renamed to .fromBufferAttribute().' );
	return this.fromBufferAttribute( attribute, index, offset );

};

Vector3.prototype.distanceToManhattan = function ( v ) {

	console.warn( 'THREE.Vector3: .distanceToManhattan() has been renamed to .manhattanDistanceTo().' );
	return this.manhattanDistanceTo( v );

};

Vector3.prototype.lengthManhattan = function () {

	console.warn( 'THREE.Vector3: .lengthManhattan() has been renamed to .manhattanLength().' );
	return this.manhattanLength();

};

//

Vector4$1.prototype.fromAttribute = function ( attribute, index, offset ) {

	console.warn( 'THREE.Vector4: .fromAttribute() has been renamed to .fromBufferAttribute().' );
	return this.fromBufferAttribute( attribute, index, offset );

};

Vector4$1.prototype.lengthManhattan = function () {

	console.warn( 'THREE.Vector4: .lengthManhattan() has been renamed to .manhattanLength().' );
	return this.manhattanLength();

};

//

Object3D.prototype.getChildByName = function ( name ) {

	console.warn( 'THREE.Object3D: .getChildByName() has been renamed to .getObjectByName().' );
	return this.getObjectByName( name );

};

Object3D.prototype.renderDepth = function () {

	console.warn( 'THREE.Object3D: .renderDepth has been removed. Use .renderOrder, instead.' );

};

Object3D.prototype.translate = function ( distance, axis ) {

	console.warn( 'THREE.Object3D: .translate() has been removed. Use .translateOnAxis( axis, distance ) instead.' );
	return this.translateOnAxis( axis, distance );

};

Object3D.prototype.getWorldRotation = function () {

	console.error( 'THREE.Object3D: .getWorldRotation() has been removed. Use THREE.Object3D.getWorldQuaternion( target ) instead.' );

};

Object3D.prototype.applyMatrix = function ( matrix ) {

	console.warn( 'THREE.Object3D: .applyMatrix() has been renamed to .applyMatrix4().' );
	return this.applyMatrix4( matrix );

};

Object.defineProperties( Object3D.prototype, {

	eulerOrder: {
		get: function () {

			console.warn( 'THREE.Object3D: .eulerOrder is now .rotation.order.' );
			return this.rotation.order;

		},
		set: function ( value ) {

			console.warn( 'THREE.Object3D: .eulerOrder is now .rotation.order.' );
			this.rotation.order = value;

		}
	},
	useQuaternion: {
		get: function () {

			console.warn( 'THREE.Object3D: .useQuaternion has been removed. The library now uses quaternions by default.' );

		},
		set: function () {

			console.warn( 'THREE.Object3D: .useQuaternion has been removed. The library now uses quaternions by default.' );

		}
	}

} );

Mesh.prototype.setDrawMode = function () {

	console.error( 'THREE.Mesh: .setDrawMode() has been removed. The renderer now always assumes THREE.TrianglesDrawMode. Transform your geometry via BufferGeometryUtils.toTrianglesDrawMode() if necessary.' );

};

Object.defineProperties( Mesh.prototype, {

	drawMode: {
		get: function () {

			console.error( 'THREE.Mesh: .drawMode has been removed. The renderer now always assumes THREE.TrianglesDrawMode.' );
			return TrianglesDrawMode;

		},
		set: function () {

			console.error( 'THREE.Mesh: .drawMode has been removed. The renderer now always assumes THREE.TrianglesDrawMode. Transform your geometry via BufferGeometryUtils.toTrianglesDrawMode() if necessary.' );

		}
	}

} );

SkinnedMesh.prototype.initBones = function () {

	console.error( 'THREE.SkinnedMesh: initBones() has been removed.' );

};

//

PerspectiveCamera.prototype.setLens = function ( focalLength, filmGauge ) {

	console.warn( 'THREE.PerspectiveCamera.setLens is deprecated. ' +
			'Use .setFocalLength and .filmGauge for a photographic setup.' );

	if ( filmGauge !== undefined ) this.filmGauge = filmGauge;
	this.setFocalLength( focalLength );

};

//

Object.defineProperties( Light.prototype, {
	onlyShadow: {
		set: function () {

			console.warn( 'THREE.Light: .onlyShadow has been removed.' );

		}
	},
	shadowCameraFov: {
		set: function ( value ) {

			console.warn( 'THREE.Light: .shadowCameraFov is now .shadow.camera.fov.' );
			this.shadow.camera.fov = value;

		}
	},
	shadowCameraLeft: {
		set: function ( value ) {

			console.warn( 'THREE.Light: .shadowCameraLeft is now .shadow.camera.left.' );
			this.shadow.camera.left = value;

		}
	},
	shadowCameraRight: {
		set: function ( value ) {

			console.warn( 'THREE.Light: .shadowCameraRight is now .shadow.camera.right.' );
			this.shadow.camera.right = value;

		}
	},
	shadowCameraTop: {
		set: function ( value ) {

			console.warn( 'THREE.Light: .shadowCameraTop is now .shadow.camera.top.' );
			this.shadow.camera.top = value;

		}
	},
	shadowCameraBottom: {
		set: function ( value ) {

			console.warn( 'THREE.Light: .shadowCameraBottom is now .shadow.camera.bottom.' );
			this.shadow.camera.bottom = value;

		}
	},
	shadowCameraNear: {
		set: function ( value ) {

			console.warn( 'THREE.Light: .shadowCameraNear is now .shadow.camera.near.' );
			this.shadow.camera.near = value;

		}
	},
	shadowCameraFar: {
		set: function ( value ) {

			console.warn( 'THREE.Light: .shadowCameraFar is now .shadow.camera.far.' );
			this.shadow.camera.far = value;

		}
	},
	shadowCameraVisible: {
		set: function () {

			console.warn( 'THREE.Light: .shadowCameraVisible has been removed. Use new THREE.CameraHelper( light.shadow.camera ) instead.' );

		}
	},
	shadowBias: {
		set: function ( value ) {

			console.warn( 'THREE.Light: .shadowBias is now .shadow.bias.' );
			this.shadow.bias = value;

		}
	},
	shadowDarkness: {
		set: function () {

			console.warn( 'THREE.Light: .shadowDarkness has been removed.' );

		}
	},
	shadowMapWidth: {
		set: function ( value ) {

			console.warn( 'THREE.Light: .shadowMapWidth is now .shadow.mapSize.width.' );
			this.shadow.mapSize.width = value;

		}
	},
	shadowMapHeight: {
		set: function ( value ) {

			console.warn( 'THREE.Light: .shadowMapHeight is now .shadow.mapSize.height.' );
			this.shadow.mapSize.height = value;

		}
	}
} );

//

Object.defineProperties( BufferAttribute.prototype, {

	length: {
		get: function () {

			console.warn( 'THREE.BufferAttribute: .length has been deprecated. Use .count instead.' );
			return this.array.length;

		}
	},
	dynamic: {
		get: function () {

			console.warn( 'THREE.BufferAttribute: .dynamic has been deprecated. Use .usage instead.' );
			return this.usage === DynamicDrawUsage;

		},
		set: function ( /* value */ ) {

			console.warn( 'THREE.BufferAttribute: .dynamic has been deprecated. Use .usage instead.' );
			this.setUsage( DynamicDrawUsage );

		}
	}

} );

BufferAttribute.prototype.setDynamic = function ( value ) {

	console.warn( 'THREE.BufferAttribute: .setDynamic() has been deprecated. Use .setUsage() instead.' );
	this.setUsage( value === true ? DynamicDrawUsage : StaticDrawUsage );
	return this;

};

BufferAttribute.prototype.copyIndicesArray = function ( /* indices */ ) {

	console.error( 'THREE.BufferAttribute: .copyIndicesArray() has been removed.' );

},

BufferAttribute.prototype.setArray = function ( /* array */ ) {

	console.error( 'THREE.BufferAttribute: .setArray has been removed. Use BufferGeometry .setAttribute to replace/resize attribute buffers' );

};

//

BufferGeometry.prototype.addIndex = function ( index ) {

	console.warn( 'THREE.BufferGeometry: .addIndex() has been renamed to .setIndex().' );
	this.setIndex( index );

};

BufferGeometry.prototype.addAttribute = function ( name, attribute ) {

	console.warn( 'THREE.BufferGeometry: .addAttribute() has been renamed to .setAttribute().' );

	if ( ! ( attribute && attribute.isBufferAttribute ) && ! ( attribute && attribute.isInterleavedBufferAttribute ) ) {

		console.warn( 'THREE.BufferGeometry: .addAttribute() now expects ( name, attribute ).' );

		return this.setAttribute( name, new BufferAttribute( arguments[ 1 ], arguments[ 2 ] ) );

	}

	if ( name === 'index' ) {

		console.warn( 'THREE.BufferGeometry.addAttribute: Use .setIndex() for index attribute.' );
		this.setIndex( attribute );

		return this;

	}

	return this.setAttribute( name, attribute );

};

BufferGeometry.prototype.addDrawCall = function ( start, count, indexOffset ) {

	if ( indexOffset !== undefined ) {

		console.warn( 'THREE.BufferGeometry: .addDrawCall() no longer supports indexOffset.' );

	}

	console.warn( 'THREE.BufferGeometry: .addDrawCall() is now .addGroup().' );
	this.addGroup( start, count );

};

BufferGeometry.prototype.clearDrawCalls = function () {

	console.warn( 'THREE.BufferGeometry: .clearDrawCalls() is now .clearGroups().' );
	this.clearGroups();

};

BufferGeometry.prototype.computeOffsets = function () {

	console.warn( 'THREE.BufferGeometry: .computeOffsets() has been removed.' );

};

BufferGeometry.prototype.removeAttribute = function ( name ) {

	console.warn( 'THREE.BufferGeometry: .removeAttribute() has been renamed to .deleteAttribute().' );

	return this.deleteAttribute( name );

};

BufferGeometry.prototype.applyMatrix = function ( matrix ) {

	console.warn( 'THREE.BufferGeometry: .applyMatrix() has been renamed to .applyMatrix4().' );
	return this.applyMatrix4( matrix );

};

Object.defineProperties( BufferGeometry.prototype, {

	drawcalls: {
		get: function () {

			console.error( 'THREE.BufferGeometry: .drawcalls has been renamed to .groups.' );
			return this.groups;

		}
	},
	offsets: {
		get: function () {

			console.warn( 'THREE.BufferGeometry: .offsets has been renamed to .groups.' );
			return this.groups;

		}
	}

} );

InterleavedBuffer.prototype.setDynamic = function ( value ) {

	console.warn( 'THREE.InterleavedBuffer: .setDynamic() has been deprecated. Use .setUsage() instead.' );
	this.setUsage( value === true ? DynamicDrawUsage : StaticDrawUsage );
	return this;

};

InterleavedBuffer.prototype.setArray = function ( /* array */ ) {

	console.error( 'THREE.InterleavedBuffer: .setArray has been removed. Use BufferGeometry .setAttribute to replace/resize attribute buffers' );

};

//

ExtrudeGeometry.prototype.getArrays = function () {

	console.error( 'THREE.ExtrudeGeometry: .getArrays() has been removed.' );

};

ExtrudeGeometry.prototype.addShapeList = function () {

	console.error( 'THREE.ExtrudeGeometry: .addShapeList() has been removed.' );

};

ExtrudeGeometry.prototype.addShape = function () {

	console.error( 'THREE.ExtrudeGeometry: .addShape() has been removed.' );

};

//

Scene.prototype.dispose = function () {

	console.error( 'THREE.Scene: .dispose() has been removed.' );

};

//

Uniform.prototype.onUpdate = function () {

	console.warn( 'THREE.Uniform: .onUpdate() has been removed. Use object.onBeforeRender() instead.' );
	return this;

};

//

Object.defineProperties( Material.prototype, {

	wrapAround: {
		get: function () {

			console.warn( 'THREE.Material: .wrapAround has been removed.' );

		},
		set: function () {

			console.warn( 'THREE.Material: .wrapAround has been removed.' );

		}
	},

	overdraw: {
		get: function () {

			console.warn( 'THREE.Material: .overdraw has been removed.' );

		},
		set: function () {

			console.warn( 'THREE.Material: .overdraw has been removed.' );

		}
	},

	wrapRGB: {
		get: function () {

			console.warn( 'THREE.Material: .wrapRGB has been removed.' );
			return new Color();

		}
	},

	shading: {
		get: function () {

			console.error( 'THREE.' + this.type + ': .shading has been removed. Use the boolean .flatShading instead.' );

		},
		set: function ( value ) {

			console.warn( 'THREE.' + this.type + ': .shading has been removed. Use the boolean .flatShading instead.' );
			this.flatShading = ( value === FlatShading );

		}
	},

	stencilMask: {
		get: function () {

			console.warn( 'THREE.' + this.type + ': .stencilMask has been removed. Use .stencilFuncMask instead.' );
			return this.stencilFuncMask;

		},
		set: function ( value ) {

			console.warn( 'THREE.' + this.type + ': .stencilMask has been removed. Use .stencilFuncMask instead.' );
			this.stencilFuncMask = value;

		}
	},

	vertexTangents: {
		get: function () {

			console.warn( 'THREE.' + this.type + ': .vertexTangents has been removed.' );

		},
		set: function () {

			console.warn( 'THREE.' + this.type + ': .vertexTangents has been removed.' );

		}
	},

} );

Object.defineProperties( ShaderMaterial.prototype, {

	derivatives: {
		get: function () {

			console.warn( 'THREE.ShaderMaterial: .derivatives has been moved to .extensions.derivatives.' );
			return this.extensions.derivatives;

		},
		set: function ( value ) {

			console.warn( 'THREE. ShaderMaterial: .derivatives has been moved to .extensions.derivatives.' );
			this.extensions.derivatives = value;

		}
	}

} );

//

WebGLRenderer.prototype.clearTarget = function ( renderTarget, color, depth, stencil ) {

	console.warn( 'THREE.WebGLRenderer: .clearTarget() has been deprecated. Use .setRenderTarget() and .clear() instead.' );
	this.setRenderTarget( renderTarget );
	this.clear( color, depth, stencil );

};

WebGLRenderer.prototype.animate = function ( callback ) {

	console.warn( 'THREE.WebGLRenderer: .animate() is now .setAnimationLoop().' );
	this.setAnimationLoop( callback );

};

WebGLRenderer.prototype.getCurrentRenderTarget = function () {

	console.warn( 'THREE.WebGLRenderer: .getCurrentRenderTarget() is now .getRenderTarget().' );
	return this.getRenderTarget();

};

WebGLRenderer.prototype.getMaxAnisotropy = function () {

	console.warn( 'THREE.WebGLRenderer: .getMaxAnisotropy() is now .capabilities.getMaxAnisotropy().' );
	return this.capabilities.getMaxAnisotropy();

};

WebGLRenderer.prototype.getPrecision = function () {

	console.warn( 'THREE.WebGLRenderer: .getPrecision() is now .capabilities.precision.' );
	return this.capabilities.precision;

};

WebGLRenderer.prototype.resetGLState = function () {

	console.warn( 'THREE.WebGLRenderer: .resetGLState() is now .state.reset().' );
	return this.state.reset();

};

WebGLRenderer.prototype.supportsFloatTextures = function () {

	console.warn( 'THREE.WebGLRenderer: .supportsFloatTextures() is now .extensions.get( \'OES_texture_float\' ).' );
	return this.extensions.get( 'OES_texture_float' );

};

WebGLRenderer.prototype.supportsHalfFloatTextures = function () {

	console.warn( 'THREE.WebGLRenderer: .supportsHalfFloatTextures() is now .extensions.get( \'OES_texture_half_float\' ).' );
	return this.extensions.get( 'OES_texture_half_float' );

};

WebGLRenderer.prototype.supportsStandardDerivatives = function () {

	console.warn( 'THREE.WebGLRenderer: .supportsStandardDerivatives() is now .extensions.get( \'OES_standard_derivatives\' ).' );
	return this.extensions.get( 'OES_standard_derivatives' );

};

WebGLRenderer.prototype.supportsCompressedTextureS3TC = function () {

	console.warn( 'THREE.WebGLRenderer: .supportsCompressedTextureS3TC() is now .extensions.get( \'WEBGL_compressed_texture_s3tc\' ).' );
	return this.extensions.get( 'WEBGL_compressed_texture_s3tc' );

};

WebGLRenderer.prototype.supportsCompressedTexturePVRTC = function () {

	console.warn( 'THREE.WebGLRenderer: .supportsCompressedTexturePVRTC() is now .extensions.get( \'WEBGL_compressed_texture_pvrtc\' ).' );
	return this.extensions.get( 'WEBGL_compressed_texture_pvrtc' );

};

WebGLRenderer.prototype.supportsBlendMinMax = function () {

	console.warn( 'THREE.WebGLRenderer: .supportsBlendMinMax() is now .extensions.get( \'EXT_blend_minmax\' ).' );
	return this.extensions.get( 'EXT_blend_minmax' );

};

WebGLRenderer.prototype.supportsVertexTextures = function () {

	console.warn( 'THREE.WebGLRenderer: .supportsVertexTextures() is now .capabilities.vertexTextures.' );
	return this.capabilities.vertexTextures;

};

WebGLRenderer.prototype.supportsInstancedArrays = function () {

	console.warn( 'THREE.WebGLRenderer: .supportsInstancedArrays() is now .extensions.get( \'ANGLE_instanced_arrays\' ).' );
	return this.extensions.get( 'ANGLE_instanced_arrays' );

};

WebGLRenderer.prototype.enableScissorTest = function ( boolean ) {

	console.warn( 'THREE.WebGLRenderer: .enableScissorTest() is now .setScissorTest().' );
	this.setScissorTest( boolean );

};

WebGLRenderer.prototype.initMaterial = function () {

	console.warn( 'THREE.WebGLRenderer: .initMaterial() has been removed.' );

};

WebGLRenderer.prototype.addPrePlugin = function () {

	console.warn( 'THREE.WebGLRenderer: .addPrePlugin() has been removed.' );

};

WebGLRenderer.prototype.addPostPlugin = function () {

	console.warn( 'THREE.WebGLRenderer: .addPostPlugin() has been removed.' );

};

WebGLRenderer.prototype.updateShadowMap = function () {

	console.warn( 'THREE.WebGLRenderer: .updateShadowMap() has been removed.' );

};

WebGLRenderer.prototype.setFaceCulling = function () {

	console.warn( 'THREE.WebGLRenderer: .setFaceCulling() has been removed.' );

};

WebGLRenderer.prototype.allocTextureUnit = function () {

	console.warn( 'THREE.WebGLRenderer: .allocTextureUnit() has been removed.' );

};

WebGLRenderer.prototype.setTexture = function () {

	console.warn( 'THREE.WebGLRenderer: .setTexture() has been removed.' );

};

WebGLRenderer.prototype.setTexture2D = function () {

	console.warn( 'THREE.WebGLRenderer: .setTexture2D() has been removed.' );

};

WebGLRenderer.prototype.setTextureCube = function () {

	console.warn( 'THREE.WebGLRenderer: .setTextureCube() has been removed.' );

};

WebGLRenderer.prototype.getActiveMipMapLevel = function () {

	console.warn( 'THREE.WebGLRenderer: .getActiveMipMapLevel() is now .getActiveMipmapLevel().' );
	return this.getActiveMipmapLevel();

};

Object.defineProperties( WebGLRenderer.prototype, {

	shadowMapEnabled: {
		get: function () {

			return this.shadowMap.enabled;

		},
		set: function ( value ) {

			console.warn( 'THREE.WebGLRenderer: .shadowMapEnabled is now .shadowMap.enabled.' );
			this.shadowMap.enabled = value;

		}
	},
	shadowMapType: {
		get: function () {

			return this.shadowMap.type;

		},
		set: function ( value ) {

			console.warn( 'THREE.WebGLRenderer: .shadowMapType is now .shadowMap.type.' );
			this.shadowMap.type = value;

		}
	},
	shadowMapCullFace: {
		get: function () {

			console.warn( 'THREE.WebGLRenderer: .shadowMapCullFace has been removed. Set Material.shadowSide instead.' );
			return undefined;

		},
		set: function ( /* value */ ) {

			console.warn( 'THREE.WebGLRenderer: .shadowMapCullFace has been removed. Set Material.shadowSide instead.' );

		}
	},
	context: {
		get: function () {

			console.warn( 'THREE.WebGLRenderer: .context has been removed. Use .getContext() instead.' );
			return this.getContext();

		}
	},
	vr: {
		get: function () {

			console.warn( 'THREE.WebGLRenderer: .vr has been renamed to .xr' );
			return this.xr;

		}
	},
	gammaInput: {
		get: function () {

			console.warn( 'THREE.WebGLRenderer: .gammaInput has been removed. Set the encoding for textures via Texture.encoding instead.' );
			return false;

		},
		set: function () {

			console.warn( 'THREE.WebGLRenderer: .gammaInput has been removed. Set the encoding for textures via Texture.encoding instead.' );

		}
	},
	gammaOutput: {
		get: function () {

			console.warn( 'THREE.WebGLRenderer: .gammaOutput has been removed. Set WebGLRenderer.outputEncoding instead.' );
			return false;

		},
		set: function ( value ) {

			console.warn( 'THREE.WebGLRenderer: .gammaOutput has been removed. Set WebGLRenderer.outputEncoding instead.' );
			this.outputEncoding = ( value === true ) ? sRGBEncoding : LinearEncoding;

		}
	},
	toneMappingWhitePoint: {
		get: function () {

			console.warn( 'THREE.WebGLRenderer: .toneMappingWhitePoint has been removed.' );
			return 1.0;

		},
		set: function () {

			console.warn( 'THREE.WebGLRenderer: .toneMappingWhitePoint has been removed.' );

		}
	},
	gammaFactor: {
		get: function () {

			console.warn( 'THREE.WebGLRenderer: .gammaFactor has been removed.' );
			return 2;

		},
		set: function () {

			console.warn( 'THREE.WebGLRenderer: .gammaFactor has been removed.' );

		}
	}
} );

Object.defineProperties( WebGLShadowMap.prototype, {

	cullFace: {
		get: function () {

			console.warn( 'THREE.WebGLRenderer: .shadowMap.cullFace has been removed. Set Material.shadowSide instead.' );
			return undefined;

		},
		set: function ( /* cullFace */ ) {

			console.warn( 'THREE.WebGLRenderer: .shadowMap.cullFace has been removed. Set Material.shadowSide instead.' );

		}
	},
	renderReverseSided: {
		get: function () {

			console.warn( 'THREE.WebGLRenderer: .shadowMap.renderReverseSided has been removed. Set Material.shadowSide instead.' );
			return undefined;

		},
		set: function () {

			console.warn( 'THREE.WebGLRenderer: .shadowMap.renderReverseSided has been removed. Set Material.shadowSide instead.' );

		}
	},
	renderSingleSided: {
		get: function () {

			console.warn( 'THREE.WebGLRenderer: .shadowMap.renderSingleSided has been removed. Set Material.shadowSide instead.' );
			return undefined;

		},
		set: function () {

			console.warn( 'THREE.WebGLRenderer: .shadowMap.renderSingleSided has been removed. Set Material.shadowSide instead.' );

		}
	}

} );

function WebGLRenderTargetCube( width, height, options ) {

	console.warn( 'THREE.WebGLRenderTargetCube( width, height, options ) is now WebGLCubeRenderTarget( size, options ).' );
	return new WebGLCubeRenderTarget( width, options );

}

//

Object.defineProperties( WebGLRenderTarget.prototype, {

	wrapS: {
		get: function () {

			console.warn( 'THREE.WebGLRenderTarget: .wrapS is now .texture.wrapS.' );
			return this.texture.wrapS;

		},
		set: function ( value ) {

			console.warn( 'THREE.WebGLRenderTarget: .wrapS is now .texture.wrapS.' );
			this.texture.wrapS = value;

		}
	},
	wrapT: {
		get: function () {

			console.warn( 'THREE.WebGLRenderTarget: .wrapT is now .texture.wrapT.' );
			return this.texture.wrapT;

		},
		set: function ( value ) {

			console.warn( 'THREE.WebGLRenderTarget: .wrapT is now .texture.wrapT.' );
			this.texture.wrapT = value;

		}
	},
	magFilter: {
		get: function () {

			console.warn( 'THREE.WebGLRenderTarget: .magFilter is now .texture.magFilter.' );
			return this.texture.magFilter;

		},
		set: function ( value ) {

			console.warn( 'THREE.WebGLRenderTarget: .magFilter is now .texture.magFilter.' );
			this.texture.magFilter = value;

		}
	},
	minFilter: {
		get: function () {

			console.warn( 'THREE.WebGLRenderTarget: .minFilter is now .texture.minFilter.' );
			return this.texture.minFilter;

		},
		set: function ( value ) {

			console.warn( 'THREE.WebGLRenderTarget: .minFilter is now .texture.minFilter.' );
			this.texture.minFilter = value;

		}
	},
	anisotropy: {
		get: function () {

			console.warn( 'THREE.WebGLRenderTarget: .anisotropy is now .texture.anisotropy.' );
			return this.texture.anisotropy;

		},
		set: function ( value ) {

			console.warn( 'THREE.WebGLRenderTarget: .anisotropy is now .texture.anisotropy.' );
			this.texture.anisotropy = value;

		}
	},
	offset: {
		get: function () {

			console.warn( 'THREE.WebGLRenderTarget: .offset is now .texture.offset.' );
			return this.texture.offset;

		},
		set: function ( value ) {

			console.warn( 'THREE.WebGLRenderTarget: .offset is now .texture.offset.' );
			this.texture.offset = value;

		}
	},
	repeat: {
		get: function () {

			console.warn( 'THREE.WebGLRenderTarget: .repeat is now .texture.repeat.' );
			return this.texture.repeat;

		},
		set: function ( value ) {

			console.warn( 'THREE.WebGLRenderTarget: .repeat is now .texture.repeat.' );
			this.texture.repeat = value;

		}
	},
	format: {
		get: function () {

			console.warn( 'THREE.WebGLRenderTarget: .format is now .texture.format.' );
			return this.texture.format;

		},
		set: function ( value ) {

			console.warn( 'THREE.WebGLRenderTarget: .format is now .texture.format.' );
			this.texture.format = value;

		}
	},
	type: {
		get: function () {

			console.warn( 'THREE.WebGLRenderTarget: .type is now .texture.type.' );
			return this.texture.type;

		},
		set: function ( value ) {

			console.warn( 'THREE.WebGLRenderTarget: .type is now .texture.type.' );
			this.texture.type = value;

		}
	},
	generateMipmaps: {
		get: function () {

			console.warn( 'THREE.WebGLRenderTarget: .generateMipmaps is now .texture.generateMipmaps.' );
			return this.texture.generateMipmaps;

		},
		set: function ( value ) {

			console.warn( 'THREE.WebGLRenderTarget: .generateMipmaps is now .texture.generateMipmaps.' );
			this.texture.generateMipmaps = value;

		}
	}

} );

//

Audio.prototype.load = function ( file ) {

	console.warn( 'THREE.Audio: .load has been deprecated. Use THREE.AudioLoader instead.' );
	const scope = this;
	const audioLoader = new AudioLoader();
	audioLoader.load( file, function ( buffer ) {

		scope.setBuffer( buffer );

	} );
	return this;

};


AudioAnalyser.prototype.getData = function () {

	console.warn( 'THREE.AudioAnalyser: .getData() is now .getFrequencyData().' );
	return this.getFrequencyData();

};

//

CubeCamera.prototype.updateCubeMap = function ( renderer, scene ) {

	console.warn( 'THREE.CubeCamera: .updateCubeMap() is now .update().' );
	return this.update( renderer, scene );

};

CubeCamera.prototype.clear = function ( renderer, color, depth, stencil ) {

	console.warn( 'THREE.CubeCamera: .clear() is now .renderTarget.clear().' );
	return this.renderTarget.clear( renderer, color, depth, stencil );

};

ImageUtils.crossOrigin = undefined;

ImageUtils.loadTexture = function ( url, mapping, onLoad, onError ) {

	console.warn( 'THREE.ImageUtils.loadTexture has been deprecated. Use THREE.TextureLoader() instead.' );

	const loader = new TextureLoader();
	loader.setCrossOrigin( this.crossOrigin );

	const texture = loader.load( url, onLoad, undefined, onError );

	if ( mapping ) texture.mapping = mapping;

	return texture;

};

ImageUtils.loadTextureCube = function ( urls, mapping, onLoad, onError ) {

	console.warn( 'THREE.ImageUtils.loadTextureCube has been deprecated. Use THREE.CubeTextureLoader() instead.' );

	const loader = new CubeTextureLoader();
	loader.setCrossOrigin( this.crossOrigin );

	const texture = loader.load( urls, onLoad, undefined, onError );

	if ( mapping ) texture.mapping = mapping;

	return texture;

};

ImageUtils.loadCompressedTexture = function () {

	console.error( 'THREE.ImageUtils.loadCompressedTexture has been removed. Use THREE.DDSLoader instead.' );

};

ImageUtils.loadCompressedTextureCube = function () {

	console.error( 'THREE.ImageUtils.loadCompressedTextureCube has been removed. Use THREE.DDSLoader instead.' );

};

//

function CanvasRenderer() {

	console.error( 'THREE.CanvasRenderer has been removed' );

}

//

function JSONLoader() {

	console.error( 'THREE.JSONLoader has been removed.' );

}

//

const SceneUtils = {

	createMultiMaterialObject: function ( /* geometry, materials */ ) {

		console.error( 'THREE.SceneUtils has been moved to /examples/jsm/utils/SceneUtils.js' );

	},

	detach: function ( /* child, parent, scene */ ) {

		console.error( 'THREE.SceneUtils has been moved to /examples/jsm/utils/SceneUtils.js' );

	},

	attach: function ( /* child, scene, parent */ ) {

		console.error( 'THREE.SceneUtils has been moved to /examples/jsm/utils/SceneUtils.js' );

	}

};

//

function LensFlare() {

	console.error( 'THREE.LensFlare has been moved to /examples/jsm/objects/Lensflare.js' );

}

//

function ParametricGeometry() {

	console.error( 'THREE.ParametricGeometry has been moved to /examples/jsm/geometries/ParametricGeometry.js' );
	return new BufferGeometry();

}

function TextGeometry() {

	console.error( 'THREE.TextGeometry has been moved to /examples/jsm/geometries/TextGeometry.js' );
	return new BufferGeometry();

}

function FontLoader() {

	console.error( 'THREE.FontLoader has been moved to /examples/jsm/loaders/FontLoader.js' );

}

function Font() {

	console.error( 'THREE.Font has been moved to /examples/jsm/loaders/FontLoader.js' );

}

function ImmediateRenderObject() {

	console.error( 'THREE.ImmediateRenderObject has been removed.' );

}

function WebGLMultisampleRenderTarget( width, height, options ) {

	console.error( 'THREE.WebGLMultisampleRenderTarget has been removed. Use a normal render target and set the "samples" property to greater 0 to enable multisampling.' );
	const renderTarget = new WebGLRenderTarget( width, height, options );
	renderTarget.samples = 4;
	return renderTarget;

}

function DataTexture2DArray( data, width, height, depth ) {

	console.warn( 'THREE.DataTexture2DArray has been renamed to DataArrayTexture.' );
	return new DataArrayTexture( data, width, height, depth );

}

function DataTexture3D( data, width, height, depth ) {

	console.warn( 'THREE.DataTexture3D has been renamed to Data3DTexture.' );
	return new Data3DTexture( data, width, height, depth );

}

if ( typeof __THREE_DEVTOOLS__ !== 'undefined' ) {

	__THREE_DEVTOOLS__.dispatchEvent( new CustomEvent( 'register', { detail: {
		revision: REVISION,
	} } ) );

}

if ( typeof window !== 'undefined' ) {

	if ( window.__THREE__ ) {

		console.warn( 'WARNING: Multiple instances of Three.js being imported.' );

	} else {

		window.__THREE__ = REVISION;

	}

}

/**
 *  Three targets are provided for both GLSL and Sculpt/JS api.
 * 
 *  1: source -> Threejs shader source components (easy customization)
 *  2: source -> Threejs material
 *  3: source -> Threejs mesh (easy to use)
 * 
 * TODO: make these materials 'plug in' to threejs' lighting model, like unity's surface shaders
 */

function glslToThreeJSShaderSource(source) {
  return {
    uniforms: baseUniforms(),
    frag: threeHeader + 'const float STEP_SIZE_CONSTANT = 0.9;\n' + 'const int MAX_ITERATIONS = 300;\n' + uniformsToGLSL(baseUniforms()) + sculptureStarterCode + source + fragFooter,
    vert: threeJSVertexSource
  };
}
function glslToThreeJSMaterial(source, payload) {
  var src = glslToThreeJSShaderSource(source);
  return makeMaterial(src.uniforms, src.vert, src.frag, payload);
}
function glslToThreeJSMesh(source, payload) {
  return makeBasicMesh(glslToThreeJSMaterial(source, payload));
}
function sculptToThreeJSShaderSource(source) {
  var src = sculptToGLSL(source);

  if (src.error) {
    console.log(src.error);
  }

  var frg = threeHeader + usePBRHeader + useHemisphereLight + uniformsToGLSL(src.uniforms) + 'const float STEP_SIZE_CONSTANT = ' + src.stepSizeConstant + ';\n' + 'const int MAX_ITERATIONS = ' + src.maxIterations + ';\n' + sculptureStarterCode + src.geoGLSL + '\n' + src.colorGLSL + '\n' + fragFooter;
  return {
    uniforms: src.uniforms,
    frag: frg,
    vert: threeJSVertexSource,
    error: src.error,
    geoGLSL: src.geoGLSL,
    colorGLSL: src.colorGLSL
  };
}
function sculptToThreeJSMaterial(source, payload) {
  var src = sculptToThreeJSShaderSource(source);
  var material = makeMaterial(src.uniforms, src.vert, src.frag, payload);
  material.uniformDescriptions = src.uniforms;
  return material;
}
function sculptToThreeJSMesh(source, payload) {
  source = convertFunctionToString(source);
  return makeBasicMesh(sculptToThreeJSMaterial(source, payload));
}
function createSculptureWithGeometry(geometry, source) {
  var uniformCallback = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : function () {
    return {};
  };
  var params = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : {};
  geometry.computeBoundingSphere();
  var radius = 'radius' in params ? params.radius : geometry.boundingSphere.radius;
  params.radius = radius;
  params.geometry = geometry;
  return createSculpture(source, uniformCallback, params);
} // uniformCallback 

function createSculpture(source) {
  var uniformCallback = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : function () {
    return {};
  };
  var params = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};
  source = convertFunctionToString(source);
  var radius = 'radius' in params ? params.radius : 2;
  var geometry;

  if ('geometry' in params) {
    geometry = params.geometry;
  } else {
    var segments = 'segments' in params ? params.segments : 8;
    geometry = new SphereGeometry(radius, segments, segments);
  }

  var material = sculptToThreeJSMaterial(source);
  material.uniforms['opacity'].value = 1.0;
  material.uniforms['mouse'].value = new Vector3();
  material.uniforms['_scale'].value = radius;
  var mesh = new Mesh(geometry, material);

  mesh.onBeforeRender = function (renderer, scene, camera, geometry, material, group) {
    var uniformsToUpdate = uniformCallback();

    if (!(_typeof(uniformsToUpdate) === "object")) {
      throw "createSculpture takes, (source, uniformCallback, params) the uniformCallback must be a function that returns a dictionary of uniforms to update";
    }

    for (var _i = 0, _Object$entries = Object.entries(uniformsToUpdate); _i < _Object$entries.length; _i++) {
      var _Object$entries$_i = _slicedToArray(_Object$entries[_i], 2),
          uniform = _Object$entries$_i[0],
          value = _Object$entries$_i[1];

      material.uniforms[uniform].value = value;
    } // material.uniforms['sculptureCenter'].value = geometry.position;

  };

  return mesh;
}

function uniformDescriptionToThreeJSFormat(unifs, payload) {
  var finalUniforms = {};

  if (payload && payload !== undefined && payload.msdfTexture !== undefined) {
    finalUniforms["msdf"] = {
      value: payload.msdfTexture || new Texture()
    };
  }

  unifs.forEach(function (uniform) {
    if (uniform.type === 'float') {
      finalUniforms[uniform.name] = {
        value: uniform.value
      };
    } else if (uniform.type === 'vec2') {
      finalUniforms[uniform.name] = {
        value: new Vector2(uniform.value.x, uniform.value.y)
      };
    } else if (uniform.type === 'vec3') {
      finalUniforms[uniform.name] = {
        value: new Vector3(uniform.value.x, uniform.value.y, uniform.value.z)
      };
    } else if (uniform.type === 'vec4') {
      finalUniforms[uniform.name] = {
        value: new Vector4(uniform.value.x, uniform.value.y, uniform.value.z, uniform.value.w)
      };
    }
  });
  return finalUniforms;
} // could use a scale parameter


function makeMaterial(unifs, vert, frag, payload) {
  var material = new ShaderMaterial({
    uniforms: uniformDescriptionToThreeJSFormat(unifs, payload),
    vertexShader: vert,
    fragmentShader: frag,
    transparent: true,
    side: BackSide
  });
  material.extensions.fragDepth = false;
  return material;
} // There should be more options supported like size and shape


function makeBasicMesh(material) {
  return new Mesh(new BoxGeometry(2, 2, 2), material);
}

function uniformToCpp(uniforms) {
  var res = '';

  for (var i = 0; i < uniforms.length; i++) {
    var unif = uniforms[i];
    res += unif.type + ' ' + unif.name + ' = ';

    if (typeof unif.value === 'number') {
      // float
      res += unif.value + 0.0000001 + 'f';
    } else {
      // vec
      res += 'vec' + unif.value.length + '(';

      for (var j = 0; j < unif.value.length; j++) {
        res += unif.value[j] + 0.0000001 + 'f';

        if (j + 1 < unif.value.length) {
          res += ', ';
        }
      }

      res += ')';
    }

    res += ';\n';
  }

  return res;
}

var cppFooter = "\n\n";
var cppHeader = uniformToCpp(baseUniforms());

function glslToGLM(source) {
  // converts all numbers to floats
  var result = source.replace(/([^a-zA-Z][0-9]+([.][^a-zA-Z][0-9]*)|[.][0-9]+)()/g, '$1f'); // adds parentheses after swizzling for glm to pick up  

  result = result.replace(/([a-zA-Z0-9][.][w-z]{2,})()/g, '$1()');
  return result;
}

function glslToOfflineRenderer(source) {}
function sculptToOfflineRenderer(source) {
  var src = sculptToGLSL(source); //console.log(filteredStarter);

  return cppHeader + glslToGLM('const float STEP_SIZE_CONSTANT = ' + src.stepSizeConstant + 'f;\n' + 'const int MAX_ITERATIONS = ' + src.maxIterations + ';\n' + sculptureStarterCode + src.geoGLSL + src.colorGLSL) + cppFooter;
}

function glslToMinimalRenderer(canvas, source, updateUniforms) {
  var fullFrag = minimalHeader + usePBRHeader + useHemisphereLight + uniformsToGLSL(baseUniforms()) + 'const float STEP_SIZE_CONSTANT = 0.9;\n' + 'const int MAX_ITERATIONS = 300;\n' + sculptureStarterCode + source + fragFooter;
  return fragToMinimalRenderer(canvas, fullFrag, updateUniforms);
}
/**
 * for fast and efficient use on the web
 * input - sculpt code
 * output - a fully self-contained lightweight html file which renders the sculpture
 **/

function sculptToMinimalRenderer(canvas, source, updateUniforms) {
  if (typeof source === "function") {
    source = source.toString();
    source = source.slice(source.indexOf("{") + 1, source.lastIndexOf("}"));
  } else if (!(typeof source === "string")) {
    throw "sculptToMinimalRenderer requires the source code to be a function, or a string";
  }

  var generatedGLSL = sculptToGLSL(source);
  var fullFrag = minimalHeader + usePBRHeader + useHemisphereLight + uniformsToGLSL(generatedGLSL.uniforms) + 'const float STEP_SIZE_CONSTANT = ' + generatedGLSL.stepSizeConstant + ';\n' + 'const int MAX_ITERATIONS = ' + generatedGLSL.maxIterations + ';\n' + sculptureStarterCode + generatedGLSL.geoGLSL + '\n' + generatedGLSL.colorGLSL + '\n' + fragFooter;
  return fragToMinimalRenderer(canvas, fullFrag, updateUniforms);
}

function fragToMinimalRenderer(canvas, fullFrag, updateUniforms) {
  // if no update function is provided assume no-op
  if (updateUniforms === undefined) {
    updateUniforms = function updateUniforms() {
      return {};
    };
  }

  function resizeCanvas() {
    var devicePixelRatio = window.devicePixelRatio || 1; // change this so canvas doesn't have to fill entire window

    var width = window.innerWidth * devicePixelRatio;
    var height = window.innerHeight * devicePixelRatio;

    if (canvas.width != width || canvas.height != height) {
      canvas.width = width;
      canvas.height = height;
    }
  }

  resizeCanvas();
  window.addEventListener('resize', resizeCanvas);
  var gl = canvas.getContext('webgl2');
  var vertices = [-1.0, 1.0, 0.0, -1.0, -1.0, 0.0, 1.0, -1.0, 0.0, 1.0, 1.0, 0.0];
  var indices = [3, 2, 1, 3, 1, 0];
  var vertex_buffer = gl.createBuffer();
  gl.bindBuffer(gl.ARRAY_BUFFER, vertex_buffer);
  gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(vertices), gl.STATIC_DRAW);
  gl.bindBuffer(gl.ARRAY_BUFFER, null);
  var Index_Buffer = gl.createBuffer();
  gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, Index_Buffer);
  gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, new Uint16Array(indices), gl.STATIC_DRAW);
  gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, null);
  var vertShader = gl.createShader(gl.VERTEX_SHADER);
  gl.shaderSource(vertShader, minimalVertexSource);
  gl.compileShader(vertShader);
  var fragShader = gl.createShader(gl.FRAGMENT_SHADER);
  gl.shaderSource(fragShader, fullFrag);
  gl.compileShader(fragShader);

  var logShaderComp = function logShaderComp(shader) {
    var compiled = gl.getShaderParameter(shader, gl.COMPILE_STATUS);
    console.log('Shader compiled successfully: ' + compiled);
    var compilationLog = gl.getShaderInfoLog(shader);
    if (!compiled) console.error('Shader compiler log: ' + compilationLog);
  };

  logShaderComp(vertShader);
  logShaderComp(fragShader);
  var shaderProgram = gl.createProgram();
  gl.attachShader(shaderProgram, vertShader);
  gl.attachShader(shaderProgram, fragShader);
  gl.linkProgram(shaderProgram); // Check if it linked.

  var success = gl.getProgramParameter(shaderProgram, gl.LINK_STATUS);

  if (!success) {
    // something went wrong with the link; get the error
    console.error("program failed to link:" + gl.getProgramInfoLog(shaderProgram));
  }

  gl.useProgram(shaderProgram);
  gl.bindBuffer(gl.ARRAY_BUFFER, vertex_buffer);
  gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, Index_Buffer);
  var coord = gl.getAttribLocation(shaderProgram, "coordinates");
  gl.vertexAttribPointer(coord, 3, gl.FLOAT, false, 0, 0);
  gl.enableVertexAttribArray(coord);
  gl.clearColor(1.0, 1.0, 1.0, 0.9);
  gl.enable(gl.DEPTH_TEST);
  var oTime = Date.now();
  var loc = gl.getUniformLocation(shaderProgram, "time");

  var _scale = gl.getUniformLocation(shaderProgram, "_scale");

  var resolution = gl.getUniformLocation(shaderProgram, "resolution");
  var opac = gl.getUniformLocation(shaderProgram, "opacity");
  var mouseloc = gl.getUniformLocation(shaderProgram, "mouse");
  gl.uniform1f(opac, 1.0);
  gl.uniform1f(_scale, 1.0);
  var userUniformUpdateFuncs = assignUniforms(updateUniforms);
  canvas.addEventListener("pointermove", function (e) {
    var devicePixelRatio = window.devicePixelRatio || 1;
    var canvasX = (e.pageX - canvas.offsetLeft) * devicePixelRatio;
    var canvasY = (e.pageY - canvas.offsetTop) * devicePixelRatio;
    gl.uniform3f(mouseloc, 2.0 * canvasX / canvas.width - 1.0, 2.0 * (1.0 - canvasY / canvas.height) - 1.0, -0.5);
  }, false);

  function updateDraw() {
    if (typeof updateUniforms === 'function') {
      callUniformFuncs(userUniformUpdateFuncs, updateUniforms());
    }

    gl.uniform1f(loc, (Date.now() - oTime) * 0.001);
    var devicePixelRatio = window.devicePixelRatio || 1;
    var wwidth = window.innerWidth * devicePixelRatio;
    var wheight = window.innerHeight * devicePixelRatio;
    gl.uniform2fv(resolution, [wwidth, wheight]);
    gl.clear(gl.COLOR_BUFFER_BIT);
    gl.viewport(0, 0, canvas.width, canvas.height);
    gl.drawElements(gl.TRIANGLES, indices.length, gl.UNSIGNED_SHORT, 0);
    window.requestAnimationFrame(updateDraw);
  }

  updateDraw(); // loops through a dictionary and calls the function sotred in the value

  function callUniformFuncs(uniformFuncs, updatedUniforms) {
    if (_typeof(updatedUniforms) !== 'object') {
      console.error('updateUniforms must return a dictionary of uniform names and values. Instead got: ', updateUniforms);
      return;
    }

    Object.entries(uniformFuncs).forEach(function (keys) {
      var _keys = _slicedToArray(keys, 2),
          key = _keys[0],
          uniformUpdateFunc = _keys[1];

      if (key in updatedUniforms) {
        uniformUpdateFunc(updatedUniforms[key]);
      }
    });
  }

  function assignUniforms(updateUniforms) {
    if (typeof updateUniforms !== 'function') {
      console.error('updateUniforms must be a function that returns a dictionary of uniform names and values');
      return {};
    }

    var userUniformUpdateFuncs = {};
    var uniformsDict = updateUniforms();

    if (uniformsDict !== undefined && _typeof(uniformsDict) === 'object') {
      Object.entries(uniformsDict).forEach(function (keys) {
        var _keys2 = _slicedToArray(keys, 2),
            key = _keys2[0],
            val = _keys2[1];

        var unifLocation = gl.getUniformLocation(shaderProgram, key);

        if (typeof val === 'number') {
          userUniformUpdateFuncs[key] = function (unif) {
            return gl.uniform1f(unifLocation, unif);
          };
        } else if (Array.isArray(val)) {
          if (val.length === 1) {
            userUniformUpdateFuncs[key] = function (unif) {
              return gl.uniform1f(unifLocation, unif[0]);
            };
          } else if (val.length === 2) {
            userUniformUpdateFuncs[key] = function (unif) {
              return gl.uniform2iv(unifLocation, unif);
            };
          } else if (val.length === 3) {
            userUniformUpdateFuncs[key] = function (unif) {
              return gl.uniform3iv(unifLocation, unif);
            };
          } else if (val.length === 4) {
            userUniformUpdateFuncs[key] = function (unif) {
              return gl.uniform4iv(unifLocation, unif);
            };
          } else {
            console.error('Uniforms must be either a float or an array with length 1, 2, 3 or 4');
          }
        } else {
          console.error('Uniforms must be either a float or an array with length 1, 2, 3 or 4');
        }
      });
    }

    return userUniformUpdateFuncs;
  }
}

/**
 * for fast tesing
 * input - sculpt code
 * output - self-contained lightweight html which renders the sculpture
 **/
function sculptToMinimalHTMLRenderer(spCode, libPath) {
  return makeHTML(spCode, 'sculptToMinimalRenderer', libPath);
}
function glslToMinimalHTMLRenderer(spCode, libPath) {
  return makeHTML(spCode, 'glslToMinimalRenderer', libPath);
}

function makeHTML(spCode, minRenderFunc, libPath) {
  return "<!DOCTYPE html>\n<html lang=\"en\">\n<head>\n    <title>Shader Park</title>\n    <meta charset=\"utf-8\">\n    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1\">\n    <style>\n        body {\n            margin: 2em;\n            width: 100vw; \n            height: 100vh; \n            margin : 0px; \n            padding : 0px;\n            border : 0px; \n            background-color : white;\n        }\n        canvas {\n            width: 100%;\n            height:100%;\n            margin : 0px;\n            padding : 0px;\n            border : 0px;\n            background-color : transparent;\n        }\n    </style>\n</head>  \n<body>    \n    <canvas class=\"my-canvas\"></canvas>\n    <script type=\"module\">\n    import {".concat(minRenderFunc, "} from '").concat(libPath, "';\n    let canvas = document.querySelector('.my-canvas');\n    ").concat(minRenderFunc, "(canvas, `").concat(spCode, "`);          \n    </script>\n</body>\n</html>");
}

/**
 * export for meshing with https://github.com/tdhooper/glsl-marching-cubes
 * input - sculpt code
 * output - glsl containing "mapDistance"
 **/

function sculptToRawSDF4Meshing(source) {
  var minimalHeader = "\nprecision highp float;\nuniform float w_width;\nuniform float w_height;\nuniform mat4 projectionMatrix;\n#define cameraPosition vec3(0.0,0.0,-1.0)\n#define vUv vec2(0.0)\n#define worldPos vec4(vec2((gl_FragCoord.x/w_width-0.5)*(w_width/w_height),gl_FragCoord.y/w_height-0.5)*1.75,0.0,0.0)\n#define STEP_SIZE_CONSTANT 0.9\n#define MAX_ITERATIONS 300\n#define stepSize 0.9\n#define mouse vec3(0.0)\n#define time 0.0\n";
  var generatedGLSL = sculptToGLSL(source);
  var fullFrag = minimalHeader + usePBRHeader + useHemisphereLight //+ uniformsToGLSL(generatedGLSL.uniforms) 
  + sculptureStarterCode + generatedGLSL.geoGLSL;
  return fullFrag.replace(/surfaceDistance/g, 'mapDistance');
}

/**
 *  TD target for GLSL and  Sculpt/JS api.
 * 
 *  TODO: make these materials 'plug in' to Touch Designer's ' PBR lighting model.
 */

var TDHeader = "\nuniform float uShadowStrength;\nuniform vec3 uShadowColor;\nuniform vec4 uBaseColor;\nuniform float uMetallic;\nuniform float uRoughness;\nuniform float uSpecularLevel;\nuniform float uAmbientOcclusion;\nuniform vec3 cameraPosition;\nuniform sampler2D sBaseColorMap;\nuniform float useTDLighting;\n\n\nin Vertex\n{\n\tvec4 color;\n\tvec3 worldSpacePos;\n\tvec3 worldSpaceNorm;\n\tflat int cameraIndex;\n\tvec2 texCoord0;\n\tvec3 sculptureCenter;\n} iVert;\n\n#define sculptureCenter iVert.sculptureCenter;\n#define worldPos iVert.worldSpacePos\nlayout(location = 0) out vec4 oFragColor[TD_NUM_COLOR_BUFFERS];\nout float depthTexture;\n";
var TDFooter = "\nvoid main()\n{\n\t// This allows things such as order independent transparency\n\t// and Dual-Paraboloid rendering to work properly\n\tTDCheckDiscard();\n\n\t// Raymarching\n\tvec3 rayOrigin = worldPos.xyz-sculptureCenter;\n\tvec3 rayDirection = getRayDirection();\n\trayOrigin -= rayDirection*2.0;\n\tfloat t = intersect(rayOrigin, rayDirection, stepSize);\n    depthTexture = t;\n\n\tvec4 outcol = vec4(0.0, 0.0, 0.0, 0.0);\n\tvec3 diffuseSum = vec3(0.0, 0.0, 0.0);\n\tvec3 specularSum = vec3(0.0, 0.0, 0.0);\n\n\tvec3 worldSpaceNorm = normalize(iVert.worldSpaceNorm.xyz);\n\t// vec3 normal = normalize(worldSpaceNorm.xyz);\n\tif(t < 2.5) {\n\t\tvec3 p = (rayOrigin + rayDirection*t);\n\t\tvec3 normal = calcNormal(p);\n\t\tvec3 raymarchedColor = shade(p, normal);\n\t\n\t\tvec3 baseColor = uBaseColor.rgb;\n\n\t\t// 0.08 is the value for dielectric specular that\n\t\t// Substance Designer uses for it's top-end.\n\t\tfloat specularLevel = 0.08 * uSpecularLevel;\n\t\tfloat metallic = uMetallic;\n\n\t\tfloat roughness = uRoughness;\n\n\t\tfloat ambientOcclusion = uAmbientOcclusion;\n\n\t\tvec3 finalBaseColor = baseColor.rgb * iVert.color.rgb;\n\n\t\tvec2 texCoord0 = iVert.texCoord0.st;\n\t\tvec4 baseColorMap = texture(sBaseColorMap, texCoord0.st);\n\t\tfinalBaseColor *= baseColorMap.rgb;\n\n\n\t\t// A roughness of exactly 0 is not allowed\n\t\troughness = max(roughness, 0.0001);\n\n\t\tvec3 pbrDiffuseColor = finalBaseColor * (1.0 - metallic);\n\t\tvec3 pbrSpecularColor = mix(vec3(specularLevel), finalBaseColor, metallic);\n\n\t\tvec3 viewVec = normalize(uTDMats[iVert.cameraIndex].camInverse[3].xyz - iVert.worldSpacePos.xyz );\n\n\n\t\t// Your shader will be recompiled based on the number\n\t\t// of lights in your scene, so this continues to work\n\t\t// even if you change your lighting setup after the shader\n\t\t// has been exported from the Phong MAT\n\t\tfor (int i = 0; i < TD_NUM_LIGHTS; i++)\n\t\t{\n\t\t\tTDPBRResult res;\n\t\t\tres = TDLightingPBR(i,\n\t\t\t\t\t\t\t\tpbrDiffuseColor,\n\t\t\t\t\t\t\t\tpbrSpecularColor,\n\t\t\t\t\t\t\t\tiVert.worldSpacePos.xyz,\n\t\t\t\t\t\t\t\tnormal,\n\t\t\t\t\t\t\t\tuShadowStrength, uShadowColor,\n\t\t\t\t\t\t\t\tviewVec,\n\t\t\t\t\t\t\t\troughness);\n\t\t\tdiffuseSum += res.diffuse;\n\t\t\tspecularSum += res.specular;\n\t\t}\n\n\t\t// Environment lights\n\t\tfor (int i = 0; i < TD_NUM_ENV_LIGHTS; i++)\n\t\t{\n\t\t\tTDPBRResult res;\n\t\t\tres = TDEnvLightingPBR(i,\n\t\t\t\t\t\tpbrDiffuseColor,\n\t\t\t\t\t\tpbrSpecularColor,\n\t\t\t\t\t\tnormal,\n\t\t\t\t\t\tviewVec,\n\t\t\t\t\t\troughness,\n\t\t\t\t\t\tambientOcclusion);\n\t\t\tdiffuseSum += res.diffuse;\n\t\t\tspecularSum += res.specular;\n\t\t}\n\t\t// Final Diffuse Contribution\n\t\tvec3 finalDiffuse = diffuseSum;\n\t\toutcol.rgb += finalDiffuse;\n\n\t\t// Final Specular Contribution\n\t\tvec3 finalSpecular = vec3(0.0);\n\t\tfinalSpecular += specularSum;\n\n\t\toutcol.rgb += finalSpecular;\n\n\n\t\t// Apply fog, this does nothing if fog is disabled\n\t\toutcol = TDFog(outcol, iVert.worldSpacePos.xyz, iVert.cameraIndex);\n\n\t\t// Alpha Calculation\n\t\tfloat alpha = uBaseColor.a * iVert.color.a ;\n\n\t\t// Dithering, does nothing if dithering is disabled\n\t\toutcol = TDDither(outcol);\n\n\t\toutcol.rgb *= alpha;\n\n\t\t// Modern GL removed the implicit alpha test, so we need to apply\n\t\t// it manually here. This function does nothing if alpha test is disabled.\n\t\tTDAlphaTest(alpha);\n\n\t\toutcol.a = alpha;\n\t\toutcol = mix(vec4(raymarchedColor, 1.0), outcol, useTDLighting);\n\t\toFragColor[0] = TDOutputSwizzle(outcol);\n\n\n\t\t// TD_NUM_COLOR_BUFFERS will be set to the number of color buffers\n\t\t// active in the render. By default we want to output zero to every\n\t\t// buffer except the first one.\n\t\tfor (int i = 1; i < TD_NUM_COLOR_BUFFERS; i++)\n\t\t{\n\t\t\toFragColor[i] = vec4(0.0);\n\t\t}\n\t} else {\n\t\tdiscard;\n\t}\n}\n";
function glslToTouchDesignerShaderSource(source) {
  return {
    uniforms: baseUniforms(),
    frag: TDHeader + 'const float STEP_SIZE_CONSTANT = 0.9;\n' + 'const int MAX_ITERATIONS = 300;\n' + uniformsToGLSL(baseUniforms()) + sculptureStarterCode + source + TDFooter,
    vert: minimalVertexSource
  };
}
function sculptToTouchDesignerShaderSource(source) {
  var src = sculptToGLSL(source);

  if (src.error) {
    console.log(src.error);
  }

  var frg = TDHeader + usePBRHeader + useHemisphereLight + uniformsToGLSL(src.uniforms) + 'const float STEP_SIZE_CONSTANT = ' + src.stepSizeConstant + ';\n' + 'const int MAX_ITERATIONS = ' + src.maxIterations + ';\n' + sculptureStarterCode + src.geoGLSL + '\n' + src.colorGLSL + '\n' + TDFooter;
  var sdf = 'const float STEP_SIZE_CONSTANT = ' + src.stepSizeConstant + ';\n' + 'const int MAX_ITERATIONS = ' + src.maxIterations + ';\n' + sculptureStarterCode + src.geoGLSL;
  return {
    uniforms: src.uniforms,
    frag: frg,
    vert: minimalVertexSource,
    error: src.error,
    geoGLSL: src.geoGLSL,
    colorGLSL: src.colorGLSL,
    sdf: sdf,
    glslUniforms: uniformsToGLSL(src.uniforms)
  };
}

console.log('using shader-park-core version: 0.1.26'); /// Generate code for various targets

exports.baseUniforms = baseUniforms;
exports.bindStaticData = bindStaticData;
exports.createSculpture = createSculpture;
exports.createSculptureWithGeometry = createSculptureWithGeometry;
exports.defaultFragSourceGLSL = defaultFragSourceGLSL;
exports.fragFooter = fragFooter;
exports.glslToMinimalHTMLRenderer = glslToMinimalHTMLRenderer;
exports.glslToMinimalRenderer = glslToMinimalRenderer;
exports.glslToOfflineRenderer = glslToOfflineRenderer;
exports.glslToThreeJSMaterial = glslToThreeJSMaterial;
exports.glslToThreeJSMesh = glslToThreeJSMesh;
exports.glslToThreeJSShaderSource = glslToThreeJSShaderSource;
exports.glslToTouchDesignerShaderSource = glslToTouchDesignerShaderSource;
exports.minimalHeader = minimalHeader;
exports.minimalVertexSource = minimalVertexSource;
exports.sculptToGLSL = sculptToGLSL;
exports.sculptToMinimalHTMLRenderer = sculptToMinimalHTMLRenderer;
exports.sculptToMinimalRenderer = sculptToMinimalRenderer;
exports.sculptToOfflineRenderer = sculptToOfflineRenderer;
exports.sculptToRawSDF4Meshing = sculptToRawSDF4Meshing;
exports.sculptToThreeJSMaterial = sculptToThreeJSMaterial;
exports.sculptToThreeJSMesh = sculptToThreeJSMesh;
exports.sculptToThreeJSShaderSource = sculptToThreeJSShaderSource;
exports.sculptToTouchDesignerShaderSource = sculptToTouchDesignerShaderSource;
exports.sculptureStarterCode = sculptureStarterCode;
exports.uniformsToGLSL = uniformsToGLSL;
exports.useHemisphereLight = useHemisphereLight;
exports.usePBRHeader = usePBRHeader;
