deepcopy/umd/deepcopy.legacy.js

deep copy data

/*!
 * @license deepcopy.js Copyright(c) 2013 sasa+1
 * https://github.com/sasaplus1/deepcopy.js
 * Released under the MIT license.
 *
 * type-detect
 * Copyright(c) 2013 jake luer <jake@alogicalparadox.com>
 * MIT Licensed
 */
(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
  typeof define === 'function' && define.amd ? define(factory) :
  (global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.deepcopy = factory());
}(this, (function () { 'use strict';

  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);
  }

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

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

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

  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 _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;
        }
      }
    };
  }

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

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

  var _global = createCommonjsModule(function (module) {
  // https://github.com/zloirock/core-js/issues/86#issuecomment-115759028
  var global = module.exports = typeof window != 'undefined' && window.Math == Math
    ? window : typeof self != 'undefined' && self.Math == Math ? self
    // eslint-disable-next-line no-new-func
    : Function('return this')();
  if (typeof __g == 'number') __g = global; // eslint-disable-line no-undef
  });

  var hasOwnProperty = {}.hasOwnProperty;
  var _has = function (it, key) {
    return hasOwnProperty.call(it, key);
  };

  var _fails = function (exec) {
    try {
      return !!exec();
    } catch (e) {
      return true;
    }
  };

  // Thank's IE8 for his funny defineProperty
  var _descriptors = !_fails(function () {
    return Object.defineProperty({}, 'a', { get: function () { return 7; } }).a != 7;
  });

  var _core = createCommonjsModule(function (module) {
  var core = module.exports = { version: '2.6.11' };
  if (typeof __e == 'number') __e = core; // eslint-disable-line no-undef
  });
  var _core_1 = _core.version;

  var _isObject = function (it) {
    return typeof it === 'object' ? it !== null : typeof it === 'function';
  };

  var _anObject = function (it) {
    if (!_isObject(it)) throw TypeError(it + ' is not an object!');
    return it;
  };

  var document$1 = _global.document;
  // typeof document.createElement is 'object' in old IE
  var is = _isObject(document$1) && _isObject(document$1.createElement);
  var _domCreate = function (it) {
    return is ? document$1.createElement(it) : {};
  };

  var _ie8DomDefine = !_descriptors && !_fails(function () {
    return Object.defineProperty(_domCreate('div'), 'a', { get: function () { return 7; } }).a != 7;
  });

  // 7.1.1 ToPrimitive(input [, PreferredType])

  // instead of the ES6 spec version, we didn't implement @@toPrimitive case
  // and the second argument - flag - preferred type is a string
  var _toPrimitive = function (it, S) {
    if (!_isObject(it)) return it;
    var fn, val;
    if (S && typeof (fn = it.toString) == 'function' && !_isObject(val = fn.call(it))) return val;
    if (typeof (fn = it.valueOf) == 'function' && !_isObject(val = fn.call(it))) return val;
    if (!S && typeof (fn = it.toString) == 'function' && !_isObject(val = fn.call(it))) return val;
    throw TypeError("Can't convert object to primitive value");
  };

  var dP = Object.defineProperty;

  var f = _descriptors ? Object.defineProperty : function defineProperty(O, P, Attributes) {
    _anObject(O);
    P = _toPrimitive(P, true);
    _anObject(Attributes);
    if (_ie8DomDefine) try {
      return dP(O, P, Attributes);
    } catch (e) { /* empty */ }
    if ('get' in Attributes || 'set' in Attributes) throw TypeError('Accessors not supported!');
    if ('value' in Attributes) O[P] = Attributes.value;
    return O;
  };

  var _objectDp = {
  	f: f
  };

  var _propertyDesc = function (bitmap, value) {
    return {
      enumerable: !(bitmap & 1),
      configurable: !(bitmap & 2),
      writable: !(bitmap & 4),
      value: value
    };
  };

  var _hide = _descriptors ? function (object, key, value) {
    return _objectDp.f(object, key, _propertyDesc(1, value));
  } : function (object, key, value) {
    object[key] = value;
    return object;
  };

  var id = 0;
  var px = Math.random();
  var _uid = function (key) {
    return 'Symbol('.concat(key === undefined ? '' : key, ')_', (++id + px).toString(36));
  };

  var _library = false;

  var _shared = createCommonjsModule(function (module) {
  var SHARED = '__core-js_shared__';
  var store = _global[SHARED] || (_global[SHARED] = {});

  (module.exports = function (key, value) {
    return store[key] || (store[key] = value !== undefined ? value : {});
  })('versions', []).push({
    version: _core.version,
    mode:  'global',
    copyright: '© 2019 Denis Pushkarev (zloirock.ru)'
  });
  });

  var _functionToString = _shared('native-function-to-string', Function.toString);

  var _redefine = createCommonjsModule(function (module) {
  var SRC = _uid('src');

  var TO_STRING = 'toString';
  var TPL = ('' + _functionToString).split(TO_STRING);

  _core.inspectSource = function (it) {
    return _functionToString.call(it);
  };

  (module.exports = function (O, key, val, safe) {
    var isFunction = typeof val == 'function';
    if (isFunction) _has(val, 'name') || _hide(val, 'name', key);
    if (O[key] === val) return;
    if (isFunction) _has(val, SRC) || _hide(val, SRC, O[key] ? '' + O[key] : TPL.join(String(key)));
    if (O === _global) {
      O[key] = val;
    } else if (!safe) {
      delete O[key];
      _hide(O, key, val);
    } else if (O[key]) {
      O[key] = val;
    } else {
      _hide(O, key, val);
    }
  // add fake Function#toString for correct work wrapped methods / constructors with methods like LoDash isNative
  })(Function.prototype, TO_STRING, function toString() {
    return typeof this == 'function' && this[SRC] || _functionToString.call(this);
  });
  });

  var _aFunction = function (it) {
    if (typeof it != 'function') throw TypeError(it + ' is not a function!');
    return it;
  };

  // optional / simple context binding

  var _ctx = function (fn, that, length) {
    _aFunction(fn);
    if (that === undefined) return fn;
    switch (length) {
      case 1: return function (a) {
        return fn.call(that, a);
      };
      case 2: return function (a, b) {
        return fn.call(that, a, b);
      };
      case 3: return function (a, b, c) {
        return fn.call(that, a, b, c);
      };
    }
    return function (/* ...args */) {
      return fn.apply(that, arguments);
    };
  };

  var PROTOTYPE = 'prototype';

  var $export = function (type, name, source) {
    var IS_FORCED = type & $export.F;
    var IS_GLOBAL = type & $export.G;
    var IS_STATIC = type & $export.S;
    var IS_PROTO = type & $export.P;
    var IS_BIND = type & $export.B;
    var target = IS_GLOBAL ? _global : IS_STATIC ? _global[name] || (_global[name] = {}) : (_global[name] || {})[PROTOTYPE];
    var exports = IS_GLOBAL ? _core : _core[name] || (_core[name] = {});
    var expProto = exports[PROTOTYPE] || (exports[PROTOTYPE] = {});
    var key, own, out, exp;
    if (IS_GLOBAL) source = name;
    for (key in source) {
      // contains in native
      own = !IS_FORCED && target && target[key] !== undefined;
      // export native or passed
      out = (own ? target : source)[key];
      // bind timers to global for call from export context
      exp = IS_BIND && own ? _ctx(out, _global) : IS_PROTO && typeof out == 'function' ? _ctx(Function.call, out) : out;
      // extend global
      if (target) _redefine(target, key, out, type & $export.U);
      // export
      if (exports[key] != out) _hide(exports, key, exp);
      if (IS_PROTO && expProto[key] != out) expProto[key] = out;
    }
  };
  _global.core = _core;
  // type bitmap
  $export.F = 1;   // forced
  $export.G = 2;   // global
  $export.S = 4;   // static
  $export.P = 8;   // proto
  $export.B = 16;  // bind
  $export.W = 32;  // wrap
  $export.U = 64;  // safe
  $export.R = 128; // real proto method for `library`
  var _export = $export;

  var _meta = createCommonjsModule(function (module) {
  var META = _uid('meta');


  var setDesc = _objectDp.f;
  var id = 0;
  var isExtensible = Object.isExtensible || function () {
    return true;
  };
  var FREEZE = !_fails(function () {
    return isExtensible(Object.preventExtensions({}));
  });
  var setMeta = function (it) {
    setDesc(it, META, { value: {
      i: 'O' + ++id, // object ID
      w: {}          // weak collections IDs
    } });
  };
  var fastKey = function (it, create) {
    // return primitive with prefix
    if (!_isObject(it)) return typeof it == 'symbol' ? it : (typeof it == 'string' ? 'S' : 'P') + it;
    if (!_has(it, META)) {
      // can't set metadata to uncaught frozen object
      if (!isExtensible(it)) return 'F';
      // not necessary to add metadata
      if (!create) return 'E';
      // add missing metadata
      setMeta(it);
    // return object ID
    } return it[META].i;
  };
  var getWeak = function (it, create) {
    if (!_has(it, META)) {
      // can't set metadata to uncaught frozen object
      if (!isExtensible(it)) return true;
      // not necessary to add metadata
      if (!create) return false;
      // add missing metadata
      setMeta(it);
    // return hash weak collections IDs
    } return it[META].w;
  };
  // add metadata on freeze-family methods calling
  var onFreeze = function (it) {
    if (FREEZE && meta.NEED && isExtensible(it) && !_has(it, META)) setMeta(it);
    return it;
  };
  var meta = module.exports = {
    KEY: META,
    NEED: false,
    fastKey: fastKey,
    getWeak: getWeak,
    onFreeze: onFreeze
  };
  });
  var _meta_1 = _meta.KEY;
  var _meta_2 = _meta.NEED;
  var _meta_3 = _meta.fastKey;
  var _meta_4 = _meta.getWeak;
  var _meta_5 = _meta.onFreeze;

  var _wks = createCommonjsModule(function (module) {
  var store = _shared('wks');

  var Symbol = _global.Symbol;
  var USE_SYMBOL = typeof Symbol == 'function';

  var $exports = module.exports = function (name) {
    return store[name] || (store[name] =
      USE_SYMBOL && Symbol[name] || (USE_SYMBOL ? Symbol : _uid)('Symbol.' + name));
  };

  $exports.store = store;
  });

  var def = _objectDp.f;

  var TAG = _wks('toStringTag');

  var _setToStringTag = function (it, tag, stat) {
    if (it && !_has(it = stat ? it : it.prototype, TAG)) def(it, TAG, { configurable: true, value: tag });
  };

  var f$1 = _wks;

  var _wksExt = {
  	f: f$1
  };

  var defineProperty = _objectDp.f;
  var _wksDefine = function (name) {
    var $Symbol = _core.Symbol || (_core.Symbol =  _global.Symbol || {});
    if (name.charAt(0) != '_' && !(name in $Symbol)) defineProperty($Symbol, name, { value: _wksExt.f(name) });
  };

  var toString = {}.toString;

  var _cof = function (it) {
    return toString.call(it).slice(8, -1);
  };

  // fallback for non-array-like ES3 and non-enumerable old V8 strings

  // eslint-disable-next-line no-prototype-builtins
  var _iobject = Object('z').propertyIsEnumerable(0) ? Object : function (it) {
    return _cof(it) == 'String' ? it.split('') : Object(it);
  };

  // 7.2.1 RequireObjectCoercible(argument)
  var _defined = function (it) {
    if (it == undefined) throw TypeError("Can't call method on  " + it);
    return it;
  };

  // to indexed object, toObject with fallback for non-array-like ES3 strings


  var _toIobject = function (it) {
    return _iobject(_defined(it));
  };

  // 7.1.4 ToInteger
  var ceil = Math.ceil;
  var floor = Math.floor;
  var _toInteger = function (it) {
    return isNaN(it = +it) ? 0 : (it > 0 ? floor : ceil)(it);
  };

  // 7.1.15 ToLength

  var min = Math.min;
  var _toLength = function (it) {
    return it > 0 ? min(_toInteger(it), 0x1fffffffffffff) : 0; // pow(2, 53) - 1 == 9007199254740991
  };

  var max = Math.max;
  var min$1 = Math.min;
  var _toAbsoluteIndex = function (index, length) {
    index = _toInteger(index);
    return index < 0 ? max(index + length, 0) : min$1(index, length);
  };

  // false -> Array#indexOf
  // true  -> Array#includes



  var _arrayIncludes = function (IS_INCLUDES) {
    return function ($this, el, fromIndex) {
      var O = _toIobject($this);
      var length = _toLength(O.length);
      var index = _toAbsoluteIndex(fromIndex, length);
      var value;
      // Array#includes uses SameValueZero equality algorithm
      // eslint-disable-next-line no-self-compare
      if (IS_INCLUDES && el != el) while (length > index) {
        value = O[index++];
        // eslint-disable-next-line no-self-compare
        if (value != value) return true;
      // Array#indexOf ignores holes, Array#includes - not
      } else for (;length > index; index++) if (IS_INCLUDES || index in O) {
        if (O[index] === el) return IS_INCLUDES || index || 0;
      } return !IS_INCLUDES && -1;
    };
  };

  var shared = _shared('keys');

  var _sharedKey = function (key) {
    return shared[key] || (shared[key] = _uid(key));
  };

  var arrayIndexOf = _arrayIncludes(false);
  var IE_PROTO = _sharedKey('IE_PROTO');

  var _objectKeysInternal = function (object, names) {
    var O = _toIobject(object);
    var i = 0;
    var result = [];
    var key;
    for (key in O) if (key != IE_PROTO) _has(O, key) && result.push(key);
    // Don't enum bug & hidden keys
    while (names.length > i) if (_has(O, key = names[i++])) {
      ~arrayIndexOf(result, key) || result.push(key);
    }
    return result;
  };

  // IE 8- don't enum bug keys
  var _enumBugKeys = (
    'constructor,hasOwnProperty,isPrototypeOf,propertyIsEnumerable,toLocaleString,toString,valueOf'
  ).split(',');

  // 19.1.2.14 / 15.2.3.14 Object.keys(O)



  var _objectKeys = Object.keys || function keys(O) {
    return _objectKeysInternal(O, _enumBugKeys);
  };

  var f$2 = Object.getOwnPropertySymbols;

  var _objectGops = {
  	f: f$2
  };

  var f$3 = {}.propertyIsEnumerable;

  var _objectPie = {
  	f: f$3
  };

  // all enumerable object keys, includes symbols



  var _enumKeys = function (it) {
    var result = _objectKeys(it);
    var getSymbols = _objectGops.f;
    if (getSymbols) {
      var symbols = getSymbols(it);
      var isEnum = _objectPie.f;
      var i = 0;
      var key;
      while (symbols.length > i) if (isEnum.call(it, key = symbols[i++])) result.push(key);
    } return result;
  };

  // 7.2.2 IsArray(argument)

  var _isArray = Array.isArray || function isArray(arg) {
    return _cof(arg) == 'Array';
  };

  // 7.1.13 ToObject(argument)

  var _toObject = function (it) {
    return Object(_defined(it));
  };

  var _objectDps = _descriptors ? Object.defineProperties : function defineProperties(O, Properties) {
    _anObject(O);
    var keys = _objectKeys(Properties);
    var length = keys.length;
    var i = 0;
    var P;
    while (length > i) _objectDp.f(O, P = keys[i++], Properties[P]);
    return O;
  };

  var document$2 = _global.document;
  var _html = document$2 && document$2.documentElement;

  // 19.1.2.2 / 15.2.3.5 Object.create(O [, Properties])



  var IE_PROTO$1 = _sharedKey('IE_PROTO');
  var Empty = function () { /* empty */ };
  var PROTOTYPE$1 = 'prototype';

  // Create object with fake `null` prototype: use iframe Object with cleared prototype
  var createDict = function () {
    // Thrash, waste and sodomy: IE GC bug
    var iframe = _domCreate('iframe');
    var i = _enumBugKeys.length;
    var lt = '<';
    var gt = '>';
    var iframeDocument;
    iframe.style.display = 'none';
    _html.appendChild(iframe);
    iframe.src = 'javascript:'; // eslint-disable-line no-script-url
    // createDict = iframe.contentWindow.Object;
    // html.removeChild(iframe);
    iframeDocument = iframe.contentWindow.document;
    iframeDocument.open();
    iframeDocument.write(lt + 'script' + gt + 'document.F=Object' + lt + '/script' + gt);
    iframeDocument.close();
    createDict = iframeDocument.F;
    while (i--) delete createDict[PROTOTYPE$1][_enumBugKeys[i]];
    return createDict();
  };

  var _objectCreate = Object.create || function create(O, Properties) {
    var result;
    if (O !== null) {
      Empty[PROTOTYPE$1] = _anObject(O);
      result = new Empty();
      Empty[PROTOTYPE$1] = null;
      // add "__proto__" for Object.getPrototypeOf polyfill
      result[IE_PROTO$1] = O;
    } else result = createDict();
    return Properties === undefined ? result : _objectDps(result, Properties);
  };

  // 19.1.2.7 / 15.2.3.4 Object.getOwnPropertyNames(O)

  var hiddenKeys = _enumBugKeys.concat('length', 'prototype');

  var f$4 = Object.getOwnPropertyNames || function getOwnPropertyNames(O) {
    return _objectKeysInternal(O, hiddenKeys);
  };

  var _objectGopn = {
  	f: f$4
  };

  // fallback for IE11 buggy Object.getOwnPropertyNames with iframe and window

  var gOPN = _objectGopn.f;
  var toString$1 = {}.toString;

  var windowNames = typeof window == 'object' && window && Object.getOwnPropertyNames
    ? Object.getOwnPropertyNames(window) : [];

  var getWindowNames = function (it) {
    try {
      return gOPN(it);
    } catch (e) {
      return windowNames.slice();
    }
  };

  var f$5 = function getOwnPropertyNames(it) {
    return windowNames && toString$1.call(it) == '[object Window]' ? getWindowNames(it) : gOPN(_toIobject(it));
  };

  var _objectGopnExt = {
  	f: f$5
  };

  var gOPD = Object.getOwnPropertyDescriptor;

  var f$6 = _descriptors ? gOPD : function getOwnPropertyDescriptor(O, P) {
    O = _toIobject(O);
    P = _toPrimitive(P, true);
    if (_ie8DomDefine) try {
      return gOPD(O, P);
    } catch (e) { /* empty */ }
    if (_has(O, P)) return _propertyDesc(!_objectPie.f.call(O, P), O[P]);
  };

  var _objectGopd = {
  	f: f$6
  };

  // ECMAScript 6 symbols shim





  var META = _meta.KEY;





















  var gOPD$1 = _objectGopd.f;
  var dP$1 = _objectDp.f;
  var gOPN$1 = _objectGopnExt.f;
  var $Symbol = _global.Symbol;
  var $JSON = _global.JSON;
  var _stringify = $JSON && $JSON.stringify;
  var PROTOTYPE$2 = 'prototype';
  var HIDDEN = _wks('_hidden');
  var TO_PRIMITIVE = _wks('toPrimitive');
  var isEnum = {}.propertyIsEnumerable;
  var SymbolRegistry = _shared('symbol-registry');
  var AllSymbols = _shared('symbols');
  var OPSymbols = _shared('op-symbols');
  var ObjectProto = Object[PROTOTYPE$2];
  var USE_NATIVE = typeof $Symbol == 'function' && !!_objectGops.f;
  var QObject = _global.QObject;
  // Don't use setters in Qt Script, https://github.com/zloirock/core-js/issues/173
  var setter = !QObject || !QObject[PROTOTYPE$2] || !QObject[PROTOTYPE$2].findChild;

  // fallback for old Android, https://code.google.com/p/v8/issues/detail?id=687
  var setSymbolDesc = _descriptors && _fails(function () {
    return _objectCreate(dP$1({}, 'a', {
      get: function () { return dP$1(this, 'a', { value: 7 }).a; }
    })).a != 7;
  }) ? function (it, key, D) {
    var protoDesc = gOPD$1(ObjectProto, key);
    if (protoDesc) delete ObjectProto[key];
    dP$1(it, key, D);
    if (protoDesc && it !== ObjectProto) dP$1(ObjectProto, key, protoDesc);
  } : dP$1;

  var wrap = function (tag) {
    var sym = AllSymbols[tag] = _objectCreate($Symbol[PROTOTYPE$2]);
    sym._k = tag;
    return sym;
  };

  var isSymbol = USE_NATIVE && typeof $Symbol.iterator == 'symbol' ? function (it) {
    return typeof it == 'symbol';
  } : function (it) {
    return it instanceof $Symbol;
  };

  var $defineProperty = function defineProperty(it, key, D) {
    if (it === ObjectProto) $defineProperty(OPSymbols, key, D);
    _anObject(it);
    key = _toPrimitive(key, true);
    _anObject(D);
    if (_has(AllSymbols, key)) {
      if (!D.enumerable) {
        if (!_has(it, HIDDEN)) dP$1(it, HIDDEN, _propertyDesc(1, {}));
        it[HIDDEN][key] = true;
      } else {
        if (_has(it, HIDDEN) && it[HIDDEN][key]) it[HIDDEN][key] = false;
        D = _objectCreate(D, { enumerable: _propertyDesc(0, false) });
      } return setSymbolDesc(it, key, D);
    } return dP$1(it, key, D);
  };
  var $defineProperties = function defineProperties(it, P) {
    _anObject(it);
    var keys = _enumKeys(P = _toIobject(P));
    var i = 0;
    var l = keys.length;
    var key;
    while (l > i) $defineProperty(it, key = keys[i++], P[key]);
    return it;
  };
  var $create = function create(it, P) {
    return P === undefined ? _objectCreate(it) : $defineProperties(_objectCreate(it), P);
  };
  var $propertyIsEnumerable = function propertyIsEnumerable(key) {
    var E = isEnum.call(this, key = _toPrimitive(key, true));
    if (this === ObjectProto && _has(AllSymbols, key) && !_has(OPSymbols, key)) return false;
    return E || !_has(this, key) || !_has(AllSymbols, key) || _has(this, HIDDEN) && this[HIDDEN][key] ? E : true;
  };
  var $getOwnPropertyDescriptor = function getOwnPropertyDescriptor(it, key) {
    it = _toIobject(it);
    key = _toPrimitive(key, true);
    if (it === ObjectProto && _has(AllSymbols, key) && !_has(OPSymbols, key)) return;
    var D = gOPD$1(it, key);
    if (D && _has(AllSymbols, key) && !(_has(it, HIDDEN) && it[HIDDEN][key])) D.enumerable = true;
    return D;
  };
  var $getOwnPropertyNames = function getOwnPropertyNames(it) {
    var names = gOPN$1(_toIobject(it));
    var result = [];
    var i = 0;
    var key;
    while (names.length > i) {
      if (!_has(AllSymbols, key = names[i++]) && key != HIDDEN && key != META) result.push(key);
    } return result;
  };
  var $getOwnPropertySymbols = function getOwnPropertySymbols(it) {
    var IS_OP = it === ObjectProto;
    var names = gOPN$1(IS_OP ? OPSymbols : _toIobject(it));
    var result = [];
    var i = 0;
    var key;
    while (names.length > i) {
      if (_has(AllSymbols, key = names[i++]) && (IS_OP ? _has(ObjectProto, key) : true)) result.push(AllSymbols[key]);
    } return result;
  };

  // 19.4.1.1 Symbol([description])
  if (!USE_NATIVE) {
    $Symbol = function Symbol() {
      if (this instanceof $Symbol) throw TypeError('Symbol is not a constructor!');
      var tag = _uid(arguments.length > 0 ? arguments[0] : undefined);
      var $set = function (value) {
        if (this === ObjectProto) $set.call(OPSymbols, value);
        if (_has(this, HIDDEN) && _has(this[HIDDEN], tag)) this[HIDDEN][tag] = false;
        setSymbolDesc(this, tag, _propertyDesc(1, value));
      };
      if (_descriptors && setter) setSymbolDesc(ObjectProto, tag, { configurable: true, set: $set });
      return wrap(tag);
    };
    _redefine($Symbol[PROTOTYPE$2], 'toString', function toString() {
      return this._k;
    });

    _objectGopd.f = $getOwnPropertyDescriptor;
    _objectDp.f = $defineProperty;
    _objectGopn.f = _objectGopnExt.f = $getOwnPropertyNames;
    _objectPie.f = $propertyIsEnumerable;
    _objectGops.f = $getOwnPropertySymbols;

    if (_descriptors && !_library) {
      _redefine(ObjectProto, 'propertyIsEnumerable', $propertyIsEnumerable, true);
    }

    _wksExt.f = function (name) {
      return wrap(_wks(name));
    };
  }

  _export(_export.G + _export.W + _export.F * !USE_NATIVE, { Symbol: $Symbol });

  for (var es6Symbols = (
    // 19.4.2.2, 19.4.2.3, 19.4.2.4, 19.4.2.6, 19.4.2.8, 19.4.2.9, 19.4.2.10, 19.4.2.11, 19.4.2.12, 19.4.2.13, 19.4.2.14
    'hasInstance,isConcatSpreadable,iterator,match,replace,search,species,split,toPrimitive,toStringTag,unscopables'
  ).split(','), j = 0; es6Symbols.length > j;)_wks(es6Symbols[j++]);

  for (var wellKnownSymbols = _objectKeys(_wks.store), k = 0; wellKnownSymbols.length > k;) _wksDefine(wellKnownSymbols[k++]);

  _export(_export.S + _export.F * !USE_NATIVE, 'Symbol', {
    // 19.4.2.1 Symbol.for(key)
    'for': function (key) {
      return _has(SymbolRegistry, key += '')
        ? SymbolRegistry[key]
        : SymbolRegistry[key] = $Symbol(key);
    },
    // 19.4.2.5 Symbol.keyFor(sym)
    keyFor: function keyFor(sym) {
      if (!isSymbol(sym)) throw TypeError(sym + ' is not a symbol!');
      for (var key in SymbolRegistry) if (SymbolRegistry[key] === sym) return key;
    },
    useSetter: function () { setter = true; },
    useSimple: function () { setter = false; }
  });

  _export(_export.S + _export.F * !USE_NATIVE, 'Object', {
    // 19.1.2.2 Object.create(O [, Properties])
    create: $create,
    // 19.1.2.4 Object.defineProperty(O, P, Attributes)
    defineProperty: $defineProperty,
    // 19.1.2.3 Object.defineProperties(O, Properties)
    defineProperties: $defineProperties,
    // 19.1.2.6 Object.getOwnPropertyDescriptor(O, P)
    getOwnPropertyDescriptor: $getOwnPropertyDescriptor,
    // 19.1.2.7 Object.getOwnPropertyNames(O)
    getOwnPropertyNames: $getOwnPropertyNames,
    // 19.1.2.8 Object.getOwnPropertySymbols(O)
    getOwnPropertySymbols: $getOwnPropertySymbols
  });

  // Chrome 38 and 39 `Object.getOwnPropertySymbols` fails on primitives
  // https://bugs.chromium.org/p/v8/issues/detail?id=3443
  var FAILS_ON_PRIMITIVES = _fails(function () { _objectGops.f(1); });

  _export(_export.S + _export.F * FAILS_ON_PRIMITIVES, 'Object', {
    getOwnPropertySymbols: function getOwnPropertySymbols(it) {
      return _objectGops.f(_toObject(it));
    }
  });

  // 24.3.2 JSON.stringify(value [, replacer [, space]])
  $JSON && _export(_export.S + _export.F * (!USE_NATIVE || _fails(function () {
    var S = $Symbol();
    // MS Edge converts symbol values to JSON as {}
    // WebKit converts symbol values to JSON as null
    // V8 throws on boxed symbols
    return _stringify([S]) != '[null]' || _stringify({ a: S }) != '{}' || _stringify(Object(S)) != '{}';
  })), 'JSON', {
    stringify: function stringify(it) {
      var args = [it];
      var i = 1;
      var replacer, $replacer;
      while (arguments.length > i) args.push(arguments[i++]);
      $replacer = replacer = args[1];
      if (!_isObject(replacer) && it === undefined || isSymbol(it)) return; // IE8 returns string on undefined
      if (!_isArray(replacer)) replacer = function (key, value) {
        if (typeof $replacer == 'function') value = $replacer.call(this, key, value);
        if (!isSymbol(value)) return value;
      };
      args[1] = replacer;
      return _stringify.apply($JSON, args);
    }
  });

  // 19.4.3.4 Symbol.prototype[@@toPrimitive](hint)
  $Symbol[PROTOTYPE$2][TO_PRIMITIVE] || _hide($Symbol[PROTOTYPE$2], TO_PRIMITIVE, $Symbol[PROTOTYPE$2].valueOf);
  // 19.4.3.5 Symbol.prototype[@@toStringTag]
  _setToStringTag($Symbol, 'Symbol');
  // 20.2.1.9 Math[@@toStringTag]
  _setToStringTag(Math, 'Math', true);
  // 24.3.3 JSON[@@toStringTag]
  _setToStringTag(_global.JSON, 'JSON', true);

  // most Object methods by ES6 should accept primitives



  var _objectSap = function (KEY, exec) {
    var fn = (_core.Object || {})[KEY] || Object[KEY];
    var exp = {};
    exp[KEY] = exec(fn);
    _export(_export.S + _export.F * _fails(function () { fn(1); }), 'Object', exp);
  };

  // 19.1.2.14 Object.keys(O)



  _objectSap('keys', function () {
    return function keys(it) {
      return _objectKeys(_toObject(it));
    };
  });

  var _redefineAll = function (target, src, safe) {
    for (var key in src) _redefine(target, key, src[key], safe);
    return target;
  };

  var _anInstance = function (it, Constructor, name, forbiddenField) {
    if (!(it instanceof Constructor) || (forbiddenField !== undefined && forbiddenField in it)) {
      throw TypeError(name + ': incorrect invocation!');
    } return it;
  };

  // call something on iterator step with safe closing on error

  var _iterCall = function (iterator, fn, value, entries) {
    try {
      return entries ? fn(_anObject(value)[0], value[1]) : fn(value);
    // 7.4.6 IteratorClose(iterator, completion)
    } catch (e) {
      var ret = iterator['return'];
      if (ret !== undefined) _anObject(ret.call(iterator));
      throw e;
    }
  };

  var _iterators = {};

  // check on default Array iterator

  var ITERATOR = _wks('iterator');
  var ArrayProto = Array.prototype;

  var _isArrayIter = function (it) {
    return it !== undefined && (_iterators.Array === it || ArrayProto[ITERATOR] === it);
  };

  // getting tag from 19.1.3.6 Object.prototype.toString()

  var TAG$1 = _wks('toStringTag');
  // ES3 wrong here
  var ARG = _cof(function () { return arguments; }()) == 'Arguments';

  // fallback for IE11 Script Access Denied error
  var tryGet = function (it, key) {
    try {
      return it[key];
    } catch (e) { /* empty */ }
  };

  var _classof = function (it) {
    var O, T, B;
    return it === undefined ? 'Undefined' : it === null ? 'Null'
      // @@toStringTag case
      : typeof (T = tryGet(O = Object(it), TAG$1)) == 'string' ? T
      // builtinTag case
      : ARG ? _cof(O)
      // ES3 arguments fallback
      : (B = _cof(O)) == 'Object' && typeof O.callee == 'function' ? 'Arguments' : B;
  };

  var ITERATOR$1 = _wks('iterator');

  var core_getIteratorMethod = _core.getIteratorMethod = function (it) {
    if (it != undefined) return it[ITERATOR$1]
      || it['@@iterator']
      || _iterators[_classof(it)];
  };

  var _forOf = createCommonjsModule(function (module) {
  var BREAK = {};
  var RETURN = {};
  var exports = module.exports = function (iterable, entries, fn, that, ITERATOR) {
    var iterFn = ITERATOR ? function () { return iterable; } : core_getIteratorMethod(iterable);
    var f = _ctx(fn, that, entries ? 2 : 1);
    var index = 0;
    var length, step, iterator, result;
    if (typeof iterFn != 'function') throw TypeError(iterable + ' is not iterable!');
    // fast case for arrays with default iterator
    if (_isArrayIter(iterFn)) for (length = _toLength(iterable.length); length > index; index++) {
      result = entries ? f(_anObject(step = iterable[index])[0], step[1]) : f(iterable[index]);
      if (result === BREAK || result === RETURN) return result;
    } else for (iterator = iterFn.call(iterable); !(step = iterator.next()).done;) {
      result = _iterCall(iterator, f, step.value, entries);
      if (result === BREAK || result === RETURN) return result;
    }
  };
  exports.BREAK = BREAK;
  exports.RETURN = RETURN;
  });

  var SPECIES = _wks('species');

  var _arraySpeciesConstructor = function (original) {
    var C;
    if (_isArray(original)) {
      C = original.constructor;
      // cross-realm fallback
      if (typeof C == 'function' && (C === Array || _isArray(C.prototype))) C = undefined;
      if (_isObject(C)) {
        C = C[SPECIES];
        if (C === null) C = undefined;
      }
    } return C === undefined ? Array : C;
  };

  // 9.4.2.3 ArraySpeciesCreate(originalArray, length)


  var _arraySpeciesCreate = function (original, length) {
    return new (_arraySpeciesConstructor(original))(length);
  };

  // 0 -> Array#forEach
  // 1 -> Array#map
  // 2 -> Array#filter
  // 3 -> Array#some
  // 4 -> Array#every
  // 5 -> Array#find
  // 6 -> Array#findIndex





  var _arrayMethods = function (TYPE, $create) {
    var IS_MAP = TYPE == 1;
    var IS_FILTER = TYPE == 2;
    var IS_SOME = TYPE == 3;
    var IS_EVERY = TYPE == 4;
    var IS_FIND_INDEX = TYPE == 6;
    var NO_HOLES = TYPE == 5 || IS_FIND_INDEX;
    var create = $create || _arraySpeciesCreate;
    return function ($this, callbackfn, that) {
      var O = _toObject($this);
      var self = _iobject(O);
      var f = _ctx(callbackfn, that, 3);
      var length = _toLength(self.length);
      var index = 0;
      var result = IS_MAP ? create($this, length) : IS_FILTER ? create($this, 0) : undefined;
      var val, res;
      for (;length > index; index++) if (NO_HOLES || index in self) {
        val = self[index];
        res = f(val, index, O);
        if (TYPE) {
          if (IS_MAP) result[index] = res;   // map
          else if (res) switch (TYPE) {
            case 3: return true;             // some
            case 5: return val;              // find
            case 6: return index;            // findIndex
            case 2: result.push(val);        // filter
          } else if (IS_EVERY) return false; // every
        }
      }
      return IS_FIND_INDEX ? -1 : IS_SOME || IS_EVERY ? IS_EVERY : result;
    };
  };

  var _validateCollection = function (it, TYPE) {
    if (!_isObject(it) || it._t !== TYPE) throw TypeError('Incompatible receiver, ' + TYPE + ' required!');
    return it;
  };

  var getWeak = _meta.getWeak;







  var arrayFind = _arrayMethods(5);
  var arrayFindIndex = _arrayMethods(6);
  var id$1 = 0;

  // fallback for uncaught frozen keys
  var uncaughtFrozenStore = function (that) {
    return that._l || (that._l = new UncaughtFrozenStore());
  };
  var UncaughtFrozenStore = function () {
    this.a = [];
  };
  var findUncaughtFrozen = function (store, key) {
    return arrayFind(store.a, function (it) {
      return it[0] === key;
    });
  };
  UncaughtFrozenStore.prototype = {
    get: function (key) {
      var entry = findUncaughtFrozen(this, key);
      if (entry) return entry[1];
    },
    has: function (key) {
      return !!findUncaughtFrozen(this, key);
    },
    set: function (key, value) {
      var entry = findUncaughtFrozen(this, key);
      if (entry) entry[1] = value;
      else this.a.push([key, value]);
    },
    'delete': function (key) {
      var index = arrayFindIndex(this.a, function (it) {
        return it[0] === key;
      });
      if (~index) this.a.splice(index, 1);
      return !!~index;
    }
  };

  var _collectionWeak = {
    getConstructor: function (wrapper, NAME, IS_MAP, ADDER) {
      var C = wrapper(function (that, iterable) {
        _anInstance(that, C, NAME, '_i');
        that._t = NAME;      // collection type
        that._i = id$1++;      // collection id
        that._l = undefined; // leak store for uncaught frozen objects
        if (iterable != undefined) _forOf(iterable, IS_MAP, that[ADDER], that);
      });
      _redefineAll(C.prototype, {
        // 23.3.3.2 WeakMap.prototype.delete(key)
        // 23.4.3.3 WeakSet.prototype.delete(value)
        'delete': function (key) {
          if (!_isObject(key)) return false;
          var data = getWeak(key);
          if (data === true) return uncaughtFrozenStore(_validateCollection(this, NAME))['delete'](key);
          return data && _has(data, this._i) && delete data[this._i];
        },
        // 23.3.3.4 WeakMap.prototype.has(key)
        // 23.4.3.4 WeakSet.prototype.has(value)
        has: function has(key) {
          if (!_isObject(key)) return false;
          var data = getWeak(key);
          if (data === true) return uncaughtFrozenStore(_validateCollection(this, NAME)).has(key);
          return data && _has(data, this._i);
        }
      });
      return C;
    },
    def: function (that, key, value) {
      var data = getWeak(_anObject(key), true);
      if (data === true) uncaughtFrozenStore(that).set(key, value);
      else data[that._i] = value;
      return that;
    },
    ufstore: uncaughtFrozenStore
  };

  var ITERATOR$2 = _wks('iterator');
  var SAFE_CLOSING = false;

  try {
    var riter = [7][ITERATOR$2]();
    riter['return'] = function () { SAFE_CLOSING = true; };
    // eslint-disable-next-line no-throw-literal
    Array.from(riter, function () { throw 2; });
  } catch (e) { /* empty */ }

  var _iterDetect = function (exec, skipClosing) {
    if (!skipClosing && !SAFE_CLOSING) return false;
    var safe = false;
    try {
      var arr = [7];
      var iter = arr[ITERATOR$2]();
      iter.next = function () { return { done: safe = true }; };
      arr[ITERATOR$2] = function () { return iter; };
      exec(arr);
    } catch (e) { /* empty */ }
    return safe;
  };

  // Works with __proto__ only. Old v8 can't work with null proto objects.
  /* eslint-disable no-proto */


  var check = function (O, proto) {
    _anObject(O);
    if (!_isObject(proto) && proto !== null) throw TypeError(proto + ": can't set as prototype!");
  };
  var _setProto = {
    set: Object.setPrototypeOf || ('__proto__' in {} ? // eslint-disable-line
      function (test, buggy, set) {
        try {
          set = _ctx(Function.call, _objectGopd.f(Object.prototype, '__proto__').set, 2);
          set(test, []);
          buggy = !(test instanceof Array);
        } catch (e) { buggy = true; }
        return function setPrototypeOf(O, proto) {
          check(O, proto);
          if (buggy) O.__proto__ = proto;
          else set(O, proto);
          return O;
        };
      }({}, false) : undefined),
    check: check
  };

  var setPrototypeOf = _setProto.set;
  var _inheritIfRequired = function (that, target, C) {
    var S = target.constructor;
    var P;
    if (S !== C && typeof S == 'function' && (P = S.prototype) !== C.prototype && _isObject(P) && setPrototypeOf) {
      setPrototypeOf(that, P);
    } return that;
  };

  var _collection = function (NAME, wrapper, methods, common, IS_MAP, IS_WEAK) {
    var Base = _global[NAME];
    var C = Base;
    var ADDER = IS_MAP ? 'set' : 'add';
    var proto = C && C.prototype;
    var O = {};
    var fixMethod = function (KEY) {
      var fn = proto[KEY];
      _redefine(proto, KEY,
        KEY == 'delete' ? function (a) {
          return IS_WEAK && !_isObject(a) ? false : fn.call(this, a === 0 ? 0 : a);
        } : KEY == 'has' ? function has(a) {
          return IS_WEAK && !_isObject(a) ? false : fn.call(this, a === 0 ? 0 : a);
        } : KEY == 'get' ? function get(a) {
          return IS_WEAK && !_isObject(a) ? undefined : fn.call(this, a === 0 ? 0 : a);
        } : KEY == 'add' ? function add(a) { fn.call(this, a === 0 ? 0 : a); return this; }
          : function set(a, b) { fn.call(this, a === 0 ? 0 : a, b); return this; }
      );
    };
    if (typeof C != 'function' || !(IS_WEAK || proto.forEach && !_fails(function () {
      new C().entries().next();
    }))) {
      // create collection constructor
      C = common.getConstructor(wrapper, NAME, IS_MAP, ADDER);
      _redefineAll(C.prototype, methods);
      _meta.NEED = true;
    } else {
      var instance = new C();
      // early implementations not supports chaining
      var HASNT_CHAINING = instance[ADDER](IS_WEAK ? {} : -0, 1) != instance;
      // V8 ~  Chromium 40- weak-collections throws on primitives, but should return false
      var THROWS_ON_PRIMITIVES = _fails(function () { instance.has(1); });
      // most early implementations doesn't supports iterables, most modern - not close it correctly
      var ACCEPT_ITERABLES = _iterDetect(function (iter) { new C(iter); }); // eslint-disable-line no-new
      // for early implementations -0 and +0 not the same
      var BUGGY_ZERO = !IS_WEAK && _fails(function () {
        // V8 ~ Chromium 42- fails only with 5+ elements
        var $instance = new C();
        var index = 5;
        while (index--) $instance[ADDER](index, index);
        return !$instance.has(-0);
      });
      if (!ACCEPT_ITERABLES) {
        C = wrapper(function (target, iterable) {
          _anInstance(target, C, NAME);
          var that = _inheritIfRequired(new Base(), target, C);
          if (iterable != undefined) _forOf(iterable, IS_MAP, that[ADDER], that);
          return that;
        });
        C.prototype = proto;
        proto.constructor = C;
      }
      if (THROWS_ON_PRIMITIVES || BUGGY_ZERO) {
        fixMethod('delete');
        fixMethod('has');
        IS_MAP && fixMethod('get');
      }
      if (BUGGY_ZERO || HASNT_CHAINING) fixMethod(ADDER);
      // weak collections should not contains .clear method
      if (IS_WEAK && proto.clear) delete proto.clear;
    }

    _setToStringTag(C, NAME);

    O[NAME] = C;
    _export(_export.G + _export.W + _export.F * (C != Base), O);

    if (!IS_WEAK) common.setStrong(C, NAME, IS_MAP);

    return C;
  };

  var WEAK_SET = 'WeakSet';

  // 23.4 WeakSet Objects
  _collection(WEAK_SET, function (get) {
    return function WeakSet() { return get(this, arguments.length > 0 ? arguments[0] : undefined); };
  }, {
    // 23.4.3.1 WeakSet.prototype.add(value)
    add: function add(value) {
      return _collectionWeak.def(_validateCollection(this, WEAK_SET), value, true);
    }
  }, _collectionWeak, false, true);

  // 22.1.3.31 Array.prototype[@@unscopables]
  var UNSCOPABLES = _wks('unscopables');
  var ArrayProto$1 = Array.prototype;
  if (ArrayProto$1[UNSCOPABLES] == undefined) _hide(ArrayProto$1, UNSCOPABLES, {});
  var _addToUnscopables = function (key) {
    ArrayProto$1[UNSCOPABLES][key] = true;
  };

  var _iterStep = function (done, value) {
    return { value: value, done: !!done };
  };

  var IteratorPrototype = {};

  // 25.1.2.1.1 %IteratorPrototype%[@@iterator]()
  _hide(IteratorPrototype, _wks('iterator'), function () { return this; });

  var _iterCreate = function (Constructor, NAME, next) {
    Constructor.prototype = _objectCreate(IteratorPrototype, { next: _propertyDesc(1, next) });
    _setToStringTag(Constructor, NAME + ' Iterator');
  };

  // 19.1.2.9 / 15.2.3.2 Object.getPrototypeOf(O)


  var IE_PROTO$2 = _sharedKey('IE_PROTO');
  var ObjectProto$1 = Object.prototype;

  var _objectGpo = Object.getPrototypeOf || function (O) {
    O = _toObject(O);
    if (_has(O, IE_PROTO$2)) return O[IE_PROTO$2];
    if (typeof O.constructor == 'function' && O instanceof O.constructor) {
      return O.constructor.prototype;
    } return O instanceof Object ? ObjectProto$1 : null;
  };

  var ITERATOR$3 = _wks('iterator');
  var BUGGY = !([].keys && 'next' in [].keys()); // Safari has buggy iterators w/o `next`
  var FF_ITERATOR = '@@iterator';
  var KEYS = 'keys';
  var VALUES = 'values';

  var returnThis = function () { return this; };

  var _iterDefine = function (Base, NAME, Constructor, next, DEFAULT, IS_SET, FORCED) {
    _iterCreate(Constructor, NAME, next);
    var getMethod = function (kind) {
      if (!BUGGY && kind in proto) return proto[kind];
      switch (kind) {
        case KEYS: return function keys() { return new Constructor(this, kind); };
        case VALUES: return function values() { return new Constructor(this, kind); };
      } return function entries() { return new Constructor(this, kind); };
    };
    var TAG = NAME + ' Iterator';
    var DEF_VALUES = DEFAULT == VALUES;
    var VALUES_BUG = false;
    var proto = Base.prototype;
    var $native = proto[ITERATOR$3] || proto[FF_ITERATOR] || DEFAULT && proto[DEFAULT];
    var $default = $native || getMethod(DEFAULT);
    var $entries = DEFAULT ? !DEF_VALUES ? $default : getMethod('entries') : undefined;
    var $anyNative = NAME == 'Array' ? proto.entries || $native : $native;
    var methods, key, IteratorPrototype;
    // Fix native
    if ($anyNative) {
      IteratorPrototype = _objectGpo($anyNative.call(new Base()));
      if (IteratorPrototype !== Object.prototype && IteratorPrototype.next) {
        // Set @@toStringTag to native iterators
        _setToStringTag(IteratorPrototype, TAG, true);
        // fix for some old engines
        if ( typeof IteratorPrototype[ITERATOR$3] != 'function') _hide(IteratorPrototype, ITERATOR$3, returnThis);
      }
    }
    // fix Array#{values, @@iterator}.name in V8 / FF
    if (DEF_VALUES && $native && $native.name !== VALUES) {
      VALUES_BUG = true;
      $default = function values() { return $native.call(this); };
    }
    // Define iterator
    if ( (BUGGY || VALUES_BUG || !proto[ITERATOR$3])) {
      _hide(proto, ITERATOR$3, $default);
    }
    // Plug for library
    _iterators[NAME] = $default;
    _iterators[TAG] = returnThis;
    if (DEFAULT) {
      methods = {
        values: DEF_VALUES ? $default : getMethod(VALUES),
        keys: IS_SET ? $default : getMethod(KEYS),
        entries: $entries
      };
      if (FORCED) for (key in methods) {
        if (!(key in proto)) _redefine(proto, key, methods[key]);
      } else _export(_export.P + _export.F * (BUGGY || VALUES_BUG), NAME, methods);
    }
    return methods;
  };

  // 22.1.3.4 Array.prototype.entries()
  // 22.1.3.13 Array.prototype.keys()
  // 22.1.3.29 Array.prototype.values()
  // 22.1.3.30 Array.prototype[@@iterator]()
  var es6_array_iterator = _iterDefine(Array, 'Array', function (iterated, kind) {
    this._t = _toIobject(iterated); // target
    this._i = 0;                   // next index
    this._k = kind;                // kind
  // 22.1.5.2.1 %ArrayIteratorPrototype%.next()
  }, function () {
    var O = this._t;
    var kind = this._k;
    var index = this._i++;
    if (!O || index >= O.length) {
      this._t = undefined;
      return _iterStep(1);
    }
    if (kind == 'keys') return _iterStep(0, index);
    if (kind == 'values') return _iterStep(0, O[index]);
    return _iterStep(0, [index, O[index]]);
  }, 'values');

  // argumentsList[@@iterator] is %ArrayProto_values% (9.4.4.6, 9.4.4.7)
  _iterators.Arguments = _iterators.Array;

  _addToUnscopables('keys');
  _addToUnscopables('values');
  _addToUnscopables('entries');

  var ITERATOR$4 = _wks('iterator');
  var TO_STRING_TAG = _wks('toStringTag');
  var ArrayValues = _iterators.Array;

  var DOMIterables = {
    CSSRuleList: true, // TODO: Not spec compliant, should be false.
    CSSStyleDeclaration: false,
    CSSValueList: false,
    ClientRectList: false,
    DOMRectList: false,
    DOMStringList: false,
    DOMTokenList: true,
    DataTransferItemList: false,
    FileList: false,
    HTMLAllCollection: false,
    HTMLCollection: false,
    HTMLFormElement: false,
    HTMLSelectElement: false,
    MediaList: true, // TODO: Not spec compliant, should be false.
    MimeTypeArray: false,
    NamedNodeMap: false,
    NodeList: true,
    PaintRequestList: false,
    Plugin: false,
    PluginArray: false,
    SVGLengthList: false,
    SVGNumberList: false,
    SVGPathSegList: false,
    SVGPointList: false,
    SVGStringList: false,
    SVGTransformList: false,
    SourceBufferList: false,
    StyleSheetList: true, // TODO: Not spec compliant, should be false.
    TextTrackCueList: false,
    TextTrackList: false,
    TouchList: false
  };

  for (var collections = _objectKeys(DOMIterables), i = 0; i < collections.length; i++) {
    var NAME = collections[i];
    var explicit = DOMIterables[NAME];
    var Collection = _global[NAME];
    var proto = Collection && Collection.prototype;
    var key;
    if (proto) {
      if (!proto[ITERATOR$4]) _hide(proto, ITERATOR$4, ArrayValues);
      if (!proto[TO_STRING_TAG]) _hide(proto, TO_STRING_TAG, NAME);
      _iterators[NAME] = ArrayValues;
      if (explicit) for (key in es6_array_iterator) if (!proto[key]) _redefine(proto, key, es6_array_iterator[key], true);
    }
  }

  // 19.1.3.6 Object.prototype.toString()

  var test = {};
  test[_wks('toStringTag')] = 'z';
  if (test + '' != '[object z]') {
    _redefine(Object.prototype, 'toString', function toString() {
      return '[object ' + _classof(this) + ']';
    }, true);
  }

  // true  -> String#at
  // false -> String#codePointAt
  var _stringAt = function (TO_STRING) {
    return function (that, pos) {
      var s = String(_defined(that));
      var i = _toInteger(pos);
      va