plyr/dist/plyr.polyfilled.mjs

A simple, accessible and customizable HTML5, YouTube and Vimeo media player

typeof navigator === "object" && // Polyfill for creating CustomEvents on IE9/10/11
// code pulled from:
// https://github.com/d4tocchini/customevent-polyfill
// https://developer.mozilla.org/en-US/docs/Web/API/CustomEvent#Polyfill
(function () {
  if (typeof window === 'undefined') {
    return;
  }

  try {
    var ce = new window.CustomEvent('test', {
      cancelable: true
    });
    ce.preventDefault();

    if (ce.defaultPrevented !== true) {
      // IE has problems with .preventDefault() on custom events
      // http://stackoverflow.com/questions/23349191
      throw new Error('Could not prevent default');
    }
  } catch (e) {
    var CustomEvent = function CustomEvent(event, params) {
      var evt, origPrevent;
      params = params || {};
      params.bubbles = !!params.bubbles;
      params.cancelable = !!params.cancelable;
      evt = document.createEvent('CustomEvent');
      evt.initCustomEvent(event, params.bubbles, params.cancelable, params.detail);
      origPrevent = evt.preventDefault;

      evt.preventDefault = function () {
        origPrevent.call(this);

        try {
          Object.defineProperty(this, 'defaultPrevented', {
            get: function get() {
              return true;
            }
          });
        } catch (e) {
          this.defaultPrevented = true;
        }
      };

      return evt;
    };

    CustomEvent.prototype = window.Event.prototype;
    window.CustomEvent = CustomEvent; // expose definition to window
  }
})();

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 check = function (it) {
  return it && it.Math == Math && it;
};

// https://github.com/zloirock/core-js/issues/86#issuecomment-115759028
var global_1 =
  // eslint-disable-next-line no-undef
  check(typeof globalThis == 'object' && globalThis) ||
  check(typeof window == 'object' && window) ||
  check(typeof self == 'object' && self) ||
  check(typeof commonjsGlobal == 'object' && commonjsGlobal) ||
  // eslint-disable-next-line no-new-func
  Function('return this')();

var fails = function (exec) {
  try {
    return !!exec();
  } catch (error) {
    return true;
  }
};

// Thank's IE8 for his funny defineProperty
var descriptors = !fails(function () {
  return Object.defineProperty({}, 1, { get: function () { return 7; } })[1] != 7;
});

var nativePropertyIsEnumerable = {}.propertyIsEnumerable;
var getOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;

// Nashorn ~ JDK8 bug
var NASHORN_BUG = getOwnPropertyDescriptor && !nativePropertyIsEnumerable.call({ 1: 2 }, 1);

// `Object.prototype.propertyIsEnumerable` method implementation
// https://tc39.github.io/ecma262/#sec-object.prototype.propertyisenumerable
var f = NASHORN_BUG ? function propertyIsEnumerable(V) {
  var descriptor = getOwnPropertyDescriptor(this, V);
  return !!descriptor && descriptor.enumerable;
} : nativePropertyIsEnumerable;

var objectPropertyIsEnumerable = {
	f: f
};

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

var toString = {}.toString;

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

var split = ''.split;

// fallback for non-array-like ES3 and non-enumerable old V8 strings
var indexedObject = fails(function () {
  // throws an error in rhino, see https://github.com/mozilla/rhino/issues/346
  // eslint-disable-next-line no-prototype-builtins
  return !Object('z').propertyIsEnumerable(0);
}) ? function (it) {
  return classofRaw(it) == 'String' ? split.call(it, '') : Object(it);
} : Object;

// `RequireObjectCoercible` abstract operation
// https://tc39.github.io/ecma262/#sec-requireobjectcoercible
var requireObjectCoercible = function (it) {
  if (it == undefined) throw TypeError("Can't call method on " + it);
  return it;
};

// toObject with fallback for non-array-like ES3 strings



var toIndexedObject = function (it) {
  return indexedObject(requireObjectCoercible(it));
};

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

// `ToPrimitive` abstract operation
// https://tc39.github.io/ecma262/#sec-toprimitive
// 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 (input, PREFERRED_STRING) {
  if (!isObject(input)) return input;
  var fn, val;
  if (PREFERRED_STRING && typeof (fn = input.toString) == 'function' && !isObject(val = fn.call(input))) return val;
  if (typeof (fn = input.valueOf) == 'function' && !isObject(val = fn.call(input))) return val;
  if (!PREFERRED_STRING && typeof (fn = input.toString) == 'function' && !isObject(val = fn.call(input))) return val;
  throw TypeError("Can't convert object to primitive value");
};

var hasOwnProperty = {}.hasOwnProperty;

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

var document$1 = global_1.document;
// typeof document.createElement is 'object' in old IE
var EXISTS = isObject(document$1) && isObject(document$1.createElement);

var documentCreateElement = function (it) {
  return EXISTS ? document$1.createElement(it) : {};
};

// Thank's IE8 for his funny defineProperty
var ie8DomDefine = !descriptors && !fails(function () {
  return Object.defineProperty(documentCreateElement('div'), 'a', {
    get: function () { return 7; }
  }).a != 7;
});

var nativeGetOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;

// `Object.getOwnPropertyDescriptor` method
// https://tc39.github.io/ecma262/#sec-object.getownpropertydescriptor
var f$1 = descriptors ? nativeGetOwnPropertyDescriptor : function getOwnPropertyDescriptor(O, P) {
  O = toIndexedObject(O);
  P = toPrimitive(P, true);
  if (ie8DomDefine) try {
    return nativeGetOwnPropertyDescriptor(O, P);
  } catch (error) { /* empty */ }
  if (has(O, P)) return createPropertyDescriptor(!objectPropertyIsEnumerable.f.call(O, P), O[P]);
};

var objectGetOwnPropertyDescriptor = {
	f: f$1
};

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

var nativeDefineProperty = Object.defineProperty;

// `Object.defineProperty` method
// https://tc39.github.io/ecma262/#sec-object.defineproperty
var f$2 = descriptors ? nativeDefineProperty : function defineProperty(O, P, Attributes) {
  anObject(O);
  P = toPrimitive(P, true);
  anObject(Attributes);
  if (ie8DomDefine) try {
    return nativeDefineProperty(O, P, Attributes);
  } catch (error) { /* empty */ }
  if ('get' in Attributes || 'set' in Attributes) throw TypeError('Accessors not supported');
  if ('value' in Attributes) O[P] = Attributes.value;
  return O;
};

var objectDefineProperty = {
	f: f$2
};

var createNonEnumerableProperty = descriptors ? function (object, key, value) {
  return objectDefineProperty.f(object, key, createPropertyDescriptor(1, value));
} : function (object, key, value) {
  object[key] = value;
  return object;
};

var setGlobal = function (key, value) {
  try {
    createNonEnumerableProperty(global_1, key, value);
  } catch (error) {
    global_1[key] = value;
  } return value;
};

var SHARED = '__core-js_shared__';
var store = global_1[SHARED] || setGlobal(SHARED, {});

var sharedStore = store;

var functionToString = Function.toString;

// this helper broken in `3.4.1-3.4.4`, so we can't use `shared` helper
if (typeof sharedStore.inspectSource != 'function') {
  sharedStore.inspectSource = function (it) {
    return functionToString.call(it);
  };
}

var inspectSource = sharedStore.inspectSource;

var WeakMap$1 = global_1.WeakMap;

var nativeWeakMap = typeof WeakMap$1 === 'function' && /native code/.test(inspectSource(WeakMap$1));

var isPure = false;

var shared = createCommonjsModule(function (module) {
(module.exports = function (key, value) {
  return sharedStore[key] || (sharedStore[key] = value !== undefined ? value : {});
})('versions', []).push({
  version: '3.6.5',
  mode:  'global',
  copyright: '© 2020 Denis Pushkarev (zloirock.ru)'
});
});

var id = 0;
var postfix = Math.random();

var uid = function (key) {
  return 'Symbol(' + String(key === undefined ? '' : key) + ')_' + (++id + postfix).toString(36);
};

var keys = shared('keys');

var sharedKey = function (key) {
  return keys[key] || (keys[key] = uid(key));
};

var hiddenKeys = {};

var WeakMap$2 = global_1.WeakMap;
var set, get, has$1;

var enforce = function (it) {
  return has$1(it) ? get(it) : set(it, {});
};

var getterFor = function (TYPE) {
  return function (it) {
    var state;
    if (!isObject(it) || (state = get(it)).type !== TYPE) {
      throw TypeError('Incompatible receiver, ' + TYPE + ' required');
    } return state;
  };
};

if (nativeWeakMap) {
  var store$1 = new WeakMap$2();
  var wmget = store$1.get;
  var wmhas = store$1.has;
  var wmset = store$1.set;
  set = function (it, metadata) {
    wmset.call(store$1, it, metadata);
    return metadata;
  };
  get = function (it) {
    return wmget.call(store$1, it) || {};
  };
  has$1 = function (it) {
    return wmhas.call(store$1, it);
  };
} else {
  var STATE = sharedKey('state');
  hiddenKeys[STATE] = true;
  set = function (it, metadata) {
    createNonEnumerableProperty(it, STATE, metadata);
    return metadata;
  };
  get = function (it) {
    return has(it, STATE) ? it[STATE] : {};
  };
  has$1 = function (it) {
    return has(it, STATE);
  };
}

var internalState = {
  set: set,
  get: get,
  has: has$1,
  enforce: enforce,
  getterFor: getterFor
};

var redefine = createCommonjsModule(function (module) {
var getInternalState = internalState.get;
var enforceInternalState = internalState.enforce;
var TEMPLATE = String(String).split('String');

(module.exports = function (O, key, value, options) {
  var unsafe = options ? !!options.unsafe : false;
  var simple = options ? !!options.enumerable : false;
  var noTargetGet = options ? !!options.noTargetGet : false;
  if (typeof value == 'function') {
    if (typeof key == 'string' && !has(value, 'name')) createNonEnumerableProperty(value, 'name', key);
    enforceInternalState(value).source = TEMPLATE.join(typeof key == 'string' ? key : '');
  }
  if (O === global_1) {
    if (simple) O[key] = value;
    else setGlobal(key, value);
    return;
  } else if (!unsafe) {
    delete O[key];
  } else if (!noTargetGet && O[key]) {
    simple = true;
  }
  if (simple) O[key] = value;
  else createNonEnumerableProperty(O, key, value);
// add fake Function#toString for correct work wrapped methods / constructors with methods like LoDash isNative
})(Function.prototype, 'toString', function toString() {
  return typeof this == 'function' && getInternalState(this).source || inspectSource(this);
});
});

var path = global_1;

var aFunction = function (variable) {
  return typeof variable == 'function' ? variable : undefined;
};

var getBuiltIn = function (namespace, method) {
  return arguments.length < 2 ? aFunction(path[namespace]) || aFunction(global_1[namespace])
    : path[namespace] && path[namespace][method] || global_1[namespace] && global_1[namespace][method];
};

var ceil = Math.ceil;
var floor = Math.floor;

// `ToInteger` abstract operation
// https://tc39.github.io/ecma262/#sec-tointeger
var toInteger = function (argument) {
  return isNaN(argument = +argument) ? 0 : (argument > 0 ? floor : ceil)(argument);
};

var min = Math.min;

// `ToLength` abstract operation
// https://tc39.github.io/ecma262/#sec-tolength
var toLength = function (argument) {
  return argument > 0 ? min(toInteger(argument), 0x1FFFFFFFFFFFFF) : 0; // 2 ** 53 - 1 == 9007199254740991
};

var max = Math.max;
var min$1 = Math.min;

// Helper for a popular repeating case of the spec:
// Let integer be ? ToInteger(index).
// If integer < 0, let result be max((length + integer), 0); else let result be min(integer, length).
var toAbsoluteIndex = function (index, length) {
  var integer = toInteger(index);
  return integer < 0 ? max(integer + length, 0) : min$1(integer, length);
};

// `Array.prototype.{ indexOf, includes }` methods implementation
var createMethod = function (IS_INCLUDES) {
  return function ($this, el, fromIndex) {
    var O = toIndexedObject($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) && O[index] === el) return IS_INCLUDES || index || 0;
    } return !IS_INCLUDES && -1;
  };
};

var arrayIncludes = {
  // `Array.prototype.includes` method
  // https://tc39.github.io/ecma262/#sec-array.prototype.includes
  includes: createMethod(true),
  // `Array.prototype.indexOf` method
  // https://tc39.github.io/ecma262/#sec-array.prototype.indexof
  indexOf: createMethod(false)
};

var indexOf = arrayIncludes.indexOf;


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

// IE8- don't enum bug keys
var enumBugKeys = [
  'constructor',
  'hasOwnProperty',
  'isPrototypeOf',
  'propertyIsEnumerable',
  'toLocaleString',
  'toString',
  'valueOf'
];

var hiddenKeys$1 = enumBugKeys.concat('length', 'prototype');

// `Object.getOwnPropertyNames` method
// https://tc39.github.io/ecma262/#sec-object.getownpropertynames
var f$3 = Object.getOwnPropertyNames || function getOwnPropertyNames(O) {
  return objectKeysInternal(O, hiddenKeys$1);
};

var objectGetOwnPropertyNames = {
	f: f$3
};

var f$4 = Object.getOwnPropertySymbols;

var objectGetOwnPropertySymbols = {
	f: f$4
};

// all object keys, includes non-enumerable and symbols
var ownKeys = getBuiltIn('Reflect', 'ownKeys') || function ownKeys(it) {
  var keys = objectGetOwnPropertyNames.f(anObject(it));
  var getOwnPropertySymbols = objectGetOwnPropertySymbols.f;
  return getOwnPropertySymbols ? keys.concat(getOwnPropertySymbols(it)) : keys;
};

var copyConstructorProperties = function (target, source) {
  var keys = ownKeys(source);
  var defineProperty = objectDefineProperty.f;
  var getOwnPropertyDescriptor = objectGetOwnPropertyDescriptor.f;
  for (var i = 0; i < keys.length; i++) {
    var key = keys[i];
    if (!has(target, key)) defineProperty(target, key, getOwnPropertyDescriptor(source, key));
  }
};

var replacement = /#|\.prototype\./;

var isForced = function (feature, detection) {
  var value = data[normalize(feature)];
  return value == POLYFILL ? true
    : value == NATIVE ? false
    : typeof detection == 'function' ? fails(detection)
    : !!detection;
};

var normalize = isForced.normalize = function (string) {
  return String(string).replace(replacement, '.').toLowerCase();
};

var data = isForced.data = {};
var NATIVE = isForced.NATIVE = 'N';
var POLYFILL = isForced.POLYFILL = 'P';

var isForced_1 = isForced;

var getOwnPropertyDescriptor$1 = objectGetOwnPropertyDescriptor.f;






/*
  options.target      - name of the target object
  options.global      - target is the global object
  options.stat        - export as static methods of target
  options.proto       - export as prototype methods of target
  options.real        - real prototype method for the `pure` version
  options.forced      - export even if the native feature is available
  options.bind        - bind methods to the target, required for the `pure` version
  options.wrap        - wrap constructors to preventing global pollution, required for the `pure` version
  options.unsafe      - use the simple assignment of property instead of delete + defineProperty
  options.sham        - add a flag to not completely full polyfills
  options.enumerable  - export as enumerable property
  options.noTargetGet - prevent calling a getter on target
*/
var _export = function (options, source) {
  var TARGET = options.target;
  var GLOBAL = options.global;
  var STATIC = options.stat;
  var FORCED, target, key, targetProperty, sourceProperty, descriptor;
  if (GLOBAL) {
    target = global_1;
  } else if (STATIC) {
    target = global_1[TARGET] || setGlobal(TARGET, {});
  } else {
    target = (global_1[TARGET] || {}).prototype;
  }
  if (target) for (key in source) {
    sourceProperty = source[key];
    if (options.noTargetGet) {
      descriptor = getOwnPropertyDescriptor$1(target, key);
      targetProperty = descriptor && descriptor.value;
    } else targetProperty = target[key];
    FORCED = isForced_1(GLOBAL ? key : TARGET + (STATIC ? '.' : '#') + key, options.forced);
    // contained in target
    if (!FORCED && targetProperty !== undefined) {
      if (typeof sourceProperty === typeof targetProperty) continue;
      copyConstructorProperties(sourceProperty, targetProperty);
    }
    // add a flag to not completely full polyfills
    if (options.sham || (targetProperty && targetProperty.sham)) {
      createNonEnumerableProperty(sourceProperty, 'sham', true);
    }
    // extend global
    redefine(target, key, sourceProperty, options);
  }
};

var nativeSymbol = !!Object.getOwnPropertySymbols && !fails(function () {
  // Chrome 38 Symbol has incorrect toString conversion
  // eslint-disable-next-line no-undef
  return !String(Symbol());
});

var useSymbolAsUid = nativeSymbol
  // eslint-disable-next-line no-undef
  && !Symbol.sham
  // eslint-disable-next-line no-undef
  && typeof Symbol.iterator == 'symbol';

// `IsArray` abstract operation
// https://tc39.github.io/ecma262/#sec-isarray
var isArray = Array.isArray || function isArray(arg) {
  return classofRaw(arg) == 'Array';
};

// `ToObject` abstract operation
// https://tc39.github.io/ecma262/#sec-toobject
var toObject = function (argument) {
  return Object(requireObjectCoercible(argument));
};

// `Object.keys` method
// https://tc39.github.io/ecma262/#sec-object.keys
var objectKeys = Object.keys || function keys(O) {
  return objectKeysInternal(O, enumBugKeys);
};

// `Object.defineProperties` method
// https://tc39.github.io/ecma262/#sec-object.defineproperties
var objectDefineProperties = descriptors ? Object.defineProperties : function defineProperties(O, Properties) {
  anObject(O);
  var keys = objectKeys(Properties);
  var length = keys.length;
  var index = 0;
  var key;
  while (length > index) objectDefineProperty.f(O, key = keys[index++], Properties[key]);
  return O;
};

var html = getBuiltIn('document', 'documentElement');

var GT = '>';
var LT = '<';
var PROTOTYPE = 'prototype';
var SCRIPT = 'script';
var IE_PROTO = sharedKey('IE_PROTO');

var EmptyConstructor = function () { /* empty */ };

var scriptTag = function (content) {
  return LT + SCRIPT + GT + content + LT + '/' + SCRIPT + GT;
};

// Create object with fake `null` prototype: use ActiveX Object with cleared prototype
var NullProtoObjectViaActiveX = function (activeXDocument) {
  activeXDocument.write(scriptTag(''));
  activeXDocument.close();
  var temp = activeXDocument.parentWindow.Object;
  activeXDocument = null; // avoid memory leak
  return temp;
};

// Create object with fake `null` prototype: use iframe Object with cleared prototype
var NullProtoObjectViaIFrame = function () {
  // Thrash, waste and sodomy: IE GC bug
  var iframe = documentCreateElement('iframe');
  var JS = 'java' + SCRIPT + ':';
  var iframeDocument;
  iframe.style.display = 'none';
  html.appendChild(iframe);
  // https://github.com/zloirock/core-js/issues/475
  iframe.src = String(JS);
  iframeDocument = iframe.contentWindow.document;
  iframeDocument.open();
  iframeDocument.write(scriptTag('document.F=Object'));
  iframeDocument.close();
  return iframeDocument.F;
};

// Check for document.domain and active x support
// No need to use active x approach when document.domain is not set
// see https://github.com/es-shims/es5-shim/issues/150
// variation of https://github.com/kitcambridge/es5-shim/commit/4f738ac066346
// avoid IE GC bug
var activeXDocument;
var NullProtoObject = function () {
  try {
    /* global ActiveXObject */
    activeXDocument = document.domain && new ActiveXObject('htmlfile');
  } catch (error) { /* ignore */ }
  NullProtoObject = activeXDocument ? NullProtoObjectViaActiveX(activeXDocument) : NullProtoObjectViaIFrame();
  var length = enumBugKeys.length;
  while (length--) delete NullProtoObject[PROTOTYPE][enumBugKeys[length]];
  return NullProtoObject();
};

hiddenKeys[IE_PROTO] = true;

// `Object.create` method
// https://tc39.github.io/ecma262/#sec-object.create
var objectCreate = Object.create || function create(O, Properties) {
  var result;
  if (O !== null) {
    EmptyConstructor[PROTOTYPE] = anObject(O);
    result = new EmptyConstructor();
    EmptyConstructor[PROTOTYPE] = null;
    // add "__proto__" for Object.getPrototypeOf polyfill
    result[IE_PROTO] = O;
  } else result = NullProtoObject();
  return Properties === undefined ? result : objectDefineProperties(result, Properties);
};

var nativeGetOwnPropertyNames = objectGetOwnPropertyNames.f;

var toString$1 = {}.toString;

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

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

// fallback for IE11 buggy Object.getOwnPropertyNames with iframe and window
var f$5 = function getOwnPropertyNames(it) {
  return windowNames && toString$1.call(it) == '[object Window]'
    ? getWindowNames(it)
    : nativeGetOwnPropertyNames(toIndexedObject(it));
};

var objectGetOwnPropertyNamesExternal = {
	f: f$5
};

var WellKnownSymbolsStore = shared('wks');
var Symbol$1 = global_1.Symbol;
var createWellKnownSymbol = useSymbolAsUid ? Symbol$1 : Symbol$1 && Symbol$1.withoutSetter || uid;

var wellKnownSymbol = function (name) {
  if (!has(WellKnownSymbolsStore, name)) {
    if (nativeSymbol && has(Symbol$1, name)) WellKnownSymbolsStore[name] = Symbol$1[name];
    else WellKnownSymbolsStore[name] = createWellKnownSymbol('Symbol.' + name);
  } return WellKnownSymbolsStore[name];
};

var f$6 = wellKnownSymbol;

var wellKnownSymbolWrapped = {
	f: f$6
};

var defineProperty = objectDefineProperty.f;

var defineWellKnownSymbol = function (NAME) {
  var Symbol = path.Symbol || (path.Symbol = {});
  if (!has(Symbol, NAME)) defineProperty(Symbol, NAME, {
    value: wellKnownSymbolWrapped.f(NAME)
  });
};

var defineProperty$1 = objectDefineProperty.f;



var TO_STRING_TAG = wellKnownSymbol('toStringTag');

var setToStringTag = function (it, TAG, STATIC) {
  if (it && !has(it = STATIC ? it : it.prototype, TO_STRING_TAG)) {
    defineProperty$1(it, TO_STRING_TAG, { configurable: true, value: TAG });
  }
};

var aFunction$1 = function (it) {
  if (typeof it != 'function') {
    throw TypeError(String(it) + ' is not a function');
  } return it;
};

// optional / simple context binding
var functionBindContext = function (fn, that, length) {
  aFunction$1(fn);
  if (that === undefined) return fn;
  switch (length) {
    case 0: return function () {
      return fn.call(that);
    };
    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 SPECIES = wellKnownSymbol('species');

// `ArraySpeciesCreate` abstract operation
// https://tc39.github.io/ecma262/#sec-arrayspeciescreate
var arraySpeciesCreate = function (originalArray, length) {
  var C;
  if (isArray(originalArray)) {
    C = originalArray.constructor;
    // cross-realm fallback
    if (typeof C == 'function' && (C === Array || isArray(C.prototype))) C = undefined;
    else if (isObject(C)) {
      C = C[SPECIES];
      if (C === null) C = undefined;
    }
  } return new (C === undefined ? Array : C)(length === 0 ? 0 : length);
};

var push = [].push;

// `Array.prototype.{ forEach, map, filter, some, every, find, findIndex }` methods implementation
var createMethod$1 = function (TYPE) {
  var IS_MAP = TYPE == 1;
  var IS_FILTER = TYPE == 2;
  var IS_SOME = TYPE == 3;
  var IS_EVERY = TYPE == 4;
  var IS_FIND_INDEX = TYPE == 6;
  var NO_HOLES = TYPE == 5 || IS_FIND_INDEX;
  return function ($this, callbackfn, that, specificCreate) {
    var O = toObject($this);
    var self = indexedObject(O);
    var boundFunction = functionBindContext(callbackfn, that, 3);
    var length = toLength(self.length);
    var index = 0;
    var create = specificCreate || arraySpeciesCreate;
    var target = IS_MAP ? create($this, length) : IS_FILTER ? create($this, 0) : undefined;
    var value, result;
    for (;length > index; index++) if (NO_HOLES || index in self) {
      value = self[index];
      result = boundFunction(value, index, O);
      if (TYPE) {
        if (IS_MAP) target[index] = result; // map
        else if (result) switch (TYPE) {
          case 3: return true;              // some
          case 5: return value;             // find
          case 6: return index;             // findIndex
          case 2: push.call(target, value); // filter
        } else if (IS_EVERY) return false;  // every
      }
    }
    return IS_FIND_INDEX ? -1 : IS_SOME || IS_EVERY ? IS_EVERY : target;
  };
};

var arrayIteration = {
  // `Array.prototype.forEach` method
  // https://tc39.github.io/ecma262/#sec-array.prototype.foreach
  forEach: createMethod$1(0),
  // `Array.prototype.map` method
  // https://tc39.github.io/ecma262/#sec-array.prototype.map
  map: createMethod$1(1),
  // `Array.prototype.filter` method
  // https://tc39.github.io/ecma262/#sec-array.prototype.filter
  filter: createMethod$1(2),
  // `Array.prototype.some` method
  // https://tc39.github.io/ecma262/#sec-array.prototype.some
  some: createMethod$1(3),
  // `Array.prototype.every` method
  // https://tc39.github.io/ecma262/#sec-array.prototype.every
  every: createMethod$1(4),
  // `Array.prototype.find` method
  // https://tc39.github.io/ecma262/#sec-array.prototype.find
  find: createMethod$1(5),
  // `Array.prototype.findIndex` method
  // https://tc39.github.io/ecma262/#sec-array.prototype.findIndex
  findIndex: createMethod$1(6)
};

var $forEach = arrayIteration.forEach;

var HIDDEN = sharedKey('hidden');
var SYMBOL = 'Symbol';
var PROTOTYPE$1 = 'prototype';
var TO_PRIMITIVE = wellKnownSymbol('toPrimitive');
var setInternalState = internalState.set;
var getInternalState = internalState.getterFor(SYMBOL);
var ObjectPrototype = Object[PROTOTYPE$1];
var $Symbol = global_1.Symbol;
var $stringify = getBuiltIn('JSON', 'stringify');
var nativeGetOwnPropertyDescriptor$1 = objectGetOwnPropertyDescriptor.f;
var nativeDefineProperty$1 = objectDefineProperty.f;
var nativeGetOwnPropertyNames$1 = objectGetOwnPropertyNamesExternal.f;
var nativePropertyIsEnumerable$1 = objectPropertyIsEnumerable.f;
var AllSymbols = shared('symbols');
var ObjectPrototypeSymbols = shared('op-symbols');
var StringToSymbolRegistry = shared('string-to-symbol-registry');
var SymbolToStringRegistry = shared('symbol-to-string-registry');
var WellKnownSymbolsStore$1 = shared('wks');
var QObject = global_1.QObject;
// Don't use setters in Qt Script, https://github.com/zloirock/core-js/issues/173
var USE_SETTER = !QObject || !QObject[PROTOTYPE$1] || !QObject[PROTOTYPE$1].findChild;

// fallback for old Android, https://code.google.com/p/v8/issues/detail?id=687
var setSymbolDescriptor = descriptors && fails(function () {
  return objectCreate(nativeDefineProperty$1({}, 'a', {
    get: function () { return nativeDefineProperty$1(this, 'a', { value: 7 }).a; }
  })).a != 7;
}) ? function (O, P, Attributes) {
  var ObjectPrototypeDescriptor = nativeGetOwnPropertyDescriptor$1(ObjectPrototype, P);
  if (ObjectPrototypeDescriptor) delete ObjectPrototype[P];
  nativeDefineProperty$1(O, P, Attributes);
  if (ObjectPrototypeDescriptor && O !== ObjectPrototype) {
    nativeDefineProperty$1(ObjectPrototype, P, ObjectPrototypeDescriptor);
  }
} : nativeDefineProperty$1;

var wrap = function (tag, description) {
  var symbol = AllSymbols[tag] = objectCreate($Symbol[PROTOTYPE$1]);
  setInternalState(symbol, {
    type: SYMBOL,
    tag: tag,
    description: description
  });
  if (!descriptors) symbol.description = description;
  return symbol;
};

var isSymbol = useSymbolAsUid ? function (it) {
  return typeof it == 'symbol';
} : function (it) {
  return Object(it) instanceof $Symbol;
};

var $defineProperty = function defineProperty(O, P, Attributes) {
  if (O === ObjectPrototype) $defineProperty(ObjectPrototypeSymbols, P, Attributes);
  anObject(O);
  var key = toPrimitive(P, true);
  anObject(Attributes);
  if (has(AllSymbols, key)) {
    if (!Attributes.enumerable) {
      if (!has(O, HIDDEN)) nativeDefineProperty$1(O, HIDDEN, createPropertyDescriptor(1, {}));
      O[HIDDEN][key] = true;
    } else {
      if (has(O, HIDDEN) && O[HIDDEN][key]) O[HIDDEN][key] = false;
      Attributes = objectCreate(Attributes, { enumerable: createPropertyDescriptor(0, false) });
    } return setSymbolDescriptor(O, key, Attributes);
  } return nativeDefineProperty$1(O, key, Attributes);
};

var $defineProperties = function defineProperties(O, Properties) {
  anObject(O);
  var properties = toIndexedObject(Properties);
  var keys = objectKeys(properties).concat($getOwnPropertySymbols(properties));
  $forEach(keys, function (key) {
    if (!descriptors || $propertyIsEnumerable.call(properties, key)) $defineProperty(O, key, properties[key]);
  });
  return O;
};

var $create = function create(O, Properties) {
  return Properties === undefined ? objectCreate(O) : $defineProperties(objectCreate(O), Properties);
};

var $propertyIsEnumerable = function propertyIsEnumerable(V) {
  var P = toPrimitive(V, true);
  var enumerable = nativePropertyIsEnumerable$1.call(this, P);
  if (this === ObjectPrototype && has(AllSymbols, P) && !has(ObjectPrototypeSymbols, P)) return false;
  return enumerable || !has(this, P) || !has(AllSymbols, P) || has(this, HIDDEN) && this[HIDDEN][P] ? enumerable : true;
};

var $getOwnPropertyDescriptor = function getOwnPropertyDescriptor(O, P) {
  var it = toIndexedObject(O);
  var key = toPrimitive(P, true);
  if (it === ObjectPrototype && has(AllSymbols, key) && !has(ObjectPrototypeSymbols, key)) return;
  var descriptor = nativeGetOwnPropertyDescriptor$1(it, key);
  if (descriptor && has(AllSymbols, key) && !(has(it, HIDDEN) && it[HIDDEN][key])) {
    descriptor.enumerable = true;
  }
  return descriptor;
};

var $getOwnPropertyNames = function getOwnPropertyNames(O) {
  var names = nativeGetOwnPropertyNames$1(toIndexedObject(O));
  var result = [];
  $forEach(names, function (key) {
    if (!has(AllSymbols, key) && !has(hiddenKeys, key)) result.push(key);
  });
  return result;
};

var $getOwnPropertySymbols = function getOwnPropertySymbols(O) {
  var IS_OBJECT_PROTOTYPE = O === ObjectPrototype;
  var names = nativeGetOwnPropertyNames$1(IS_OBJECT_PROTOTYPE ? ObjectPrototypeSymbols : toIndexedObject(O));
  var result = [];
  $forEach(names, function (key) {
    if (has(AllSymbols, key) && (!IS_OBJECT_PROTOTYPE || has(ObjectPrototype, key))) {
      result.push(AllSymbols[key]);
    }
  });
  return result;
};

// `Symbol` constructor
// https://tc39.github.io/ecma262/#sec-symbol-constructor
if (!nativeSymbol) {
  $Symbol = function Symbol() {
    if (this instanceof $Symbol) throw TypeError('Symbol is not a constructor');
    var description = !arguments.length || arguments[0] === undefined ? undefined : String(arguments[0]);
    var tag = uid(description);
    var setter = function (value) {
      if (this === ObjectPrototype) setter.call(ObjectPrototypeSymbols, value);
      if (has(this, HIDDEN) && has(this[HIDDEN], tag)) this[HIDDEN][tag] = false;
      setSymbolDescriptor(this, tag, createPropertyDescriptor(1, value));
    };
    if (descriptors && USE_SETTER) setSymbolDescriptor(ObjectPrototype, tag, { configurable: true, set: setter });
    return wrap(tag, description);
  };

  redefine($Symbol[PROTOTYPE$1], 'toString', function toString() {
    return getInternalState(this).tag;
  });

  redefine($Symbol, 'withoutSetter', function (description) {
    return wrap(uid(description), description);
  });

  objectPropertyIsEnumerable.f = $propertyIsEnumerable;
  objectDefineProperty.f = $defineProperty;
  objectGetOwnPropertyDescriptor.f = $getOwnPropertyDescriptor;
  objectGetOwnPropertyNames.f = objectGetOwnPropertyNamesExternal.f = $getOwnPropertyNames;
  objectGetOwnPropertySymbols.f = $getOwnPropertySymbols;

  wellKnownSymbolWrapped.f = function (name) {
    return wrap(wellKnownSymbol(name), name);
  };

  if (descriptors) {
    // https://github.com/tc39/proposal-Symbol-description
    nativeDefineProperty$1($Symbol[PROTOTYPE$1], 'description', {
      configurable: true,
      get: function description() {
        return getInternalState(this).description;
      }
    });
    {
      redefine(ObjectPrototype, 'propertyIsEnumerable', $propertyIsEnumerable, { unsafe: true });
    }
  }
}

_export({ global: true, wrap: true, forced: !nativeSymbol, sham: !nativeSymbol }, {
  Symbol: $Symbol
});

$forEach(objectKeys(WellKnownSymbolsStore$1), function (name) {
  defineWellKnownSymbol(name);
});

_export({ target: SYMBOL, stat: true, forced: !nativeSymbol }, {
  // `Symbol.for` method
  // https://tc39.github.io/ecma262/#sec-symbol.for
  'for': function (key) {
    var string = String(key);
    if (has(StringToSymbolRegistry, string)) return StringToSymbolRegistry[string];
    var symbol = $Symbol(string);
    StringToSymbolRegistry[string] = symbol;
    SymbolToStringRegistry[symbol] = string;
    return symbol;
  },
  // `Symbol.keyFor` method
  // https://tc39.github.io/ecma262/#sec-symbol.keyfor
  keyFor: function keyFor(sym) {
    if (!isSymbol(sym)) throw TypeError(sym + ' is not a symbol');
    if (has(SymbolToStringRegistry, sym)) return SymbolToStringRegistry[sym];
  },
  useSetter: function () { USE_SETTER = true; },
  useSimple: function () { USE_SETTER = false; }
});

_export({ target: 'Object', stat: true, forced: !nativeSymbol, sham: !descriptors }, {
  // `Object.create` method
  // https://tc39.github.io/ecma262/#sec-object.create
  create: $create,
  // `Object.defineProperty` method
  // https://tc39.github.io/ecma262/#sec-object.defineproperty
  defineProperty: $defineProperty,
  // `Object.defineProperties` method
  // https://tc39.github.io/ecma262/#sec-object.defineproperties
  defineProperties: $defineProperties,
  // `Object.getOwnPropertyDescriptor` method
  // https://tc39.github.io/ecma262/#sec-object.getownpropertydescriptors
  getOwnPropertyDescriptor: $getOwnPropertyDescriptor
});

_export({ target: 'Object', stat: true, forced: !nativeSymbol }, {
  // `Object.getOwnPropertyNames` method
  // https://tc39.github.io/ecma262/#sec-object.getownpropertynames
  getOwnPropertyNames: $getOwnPropertyNames,
  // `Object.getOwnPropertySymbols` method
  // https://tc39.github.io/ecma262/#sec-object.getownpropertysymbols
  getOwnPropertySymbols: $getOwnPropertySymbols
});

// Chrome 38 and 39 `Object.getOwnPropertySymbols` fails on primitives
// https://bugs.chromium.org/p/v8/issues/detail?id=3443
_export({ target: 'Object', stat: true, forced: fails(function () { objectGetOwnPropertySymbols.f(1); }) }, {
  getOwnPropertySymbols: function getOwnPropertySymbols(it) {
    return objectGetOwnPropertySymbols.f(toObject(it));
  }
});

// `JSON.stringify` method behavior with symbols
// https://tc39.github.io/ecma262/#sec-json.stringify
if ($stringify) {
  var FORCED_JSON_STRINGIFY = !nativeSymbol || fails(function () {
    var symbol = $Symbol();
    // MS Edge converts symbol values to JSON as {}
    return $stringify([symbol]) != '[null]'
      // WebKit converts symbol values to JSON as null
      || $stringify({ a: symbol }) != '{}'
      // V8 throws on boxed symbols
      || $stringify(Object(symbol)) != '{}';
  });

  _export({ target: 'JSON', stat: true, forced: FORCED_JSON_STRINGIFY }, {
    // eslint-disable-next-line no-unused-vars
    stringify: function stringify(it, replacer, space) {
      var args = [it];
      var index = 1;
      var $replacer;
      while (arguments.length > index) args.push(arguments[index++]);
      $replacer = replacer;
      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(null, args);
    }
  });
}

// `Symbol.prototype[@@toPrimitive]` method
// https://tc39.github.io/ecma262/#sec-symbol.prototype-@@toprimitive
if (!$Symbol[PROTOTYPE$1][TO_PRIMITIVE]) {
  createNonEnumerableProperty($Symbol[PROTOTYPE$1], TO_PRIMITIVE, $Symbol[PROTOTYPE$1].valueOf);
}
// `Symbol.prototype[@@toStringTag]` property
// https://tc39.github.io/ecma262/#sec-symbol.prototype-@@tostringtag
setToStringTag($Symbol, SYMBOL);

hiddenKeys[HIDDEN] = true;

var defineProperty$2 = objectDefineProperty.f;


var NativeSymbol = global_1.Symbol;

if (descriptors && typeof NativeSymbol == 'function' && (!('description' in NativeSymbol.prototype) ||
  // Safari 12 bug
  NativeSymbol().description !== undefined
)) {
  var EmptyStringDescriptionStore = {};
  // wrap Symbol constructor for correct work with undefined description
  var SymbolWrapper = function Symbol() {
    var description = arguments.length < 1 || arguments[0] === undefined ? undefined : String(arguments[0]);
    var result = this instanceof SymbolWrapper
      ? new NativeSymbol(description)
      // in Edge 13, String(Symbol(undefined)) === 'Symbol(undefined)'
      : description === undefined ? NativeSymbol() : NativeSymbol(description);
    if (description === '') EmptyStringDescriptionStore[result] = true;
    return result;
  };
  copyConstructorProperties(SymbolWrapper, NativeSymbol);
  var symbolPrototype = SymbolWrapper.prototype = NativeSymbol.prototype;
  symbolPrototype.constructor = SymbolWrapper;

  var symbolToString = symbolPrototype.toString;
  var native = String(NativeSymbol('test')) == 'Symbol(test)';
  var regexp = /^Symbol\((.*)\)[^)]+$/;
  defineProperty$2(symbolPrototype, 'description', {
    configurable: true,
    get: function description() {
      var symbol = isObject(this) ? this.valueOf() : this;
      var string = symbolToString.call(symbol);
      if (has(EmptyStringDescriptionStore, symbol)) return '';
      var desc = native ? string.slice(7, -1) : string.replace(regexp, '$1');
      return desc === '' ? undefined : desc;
    }
  });

  _export({ global: true, forced: true }, {
    Symbol: SymbolWrapper
  });
}

// `Symbol.iterator` well-known symbol
// https://tc39.github.io/ecma262/#sec-symbol.iterator
defineWellKnownSymbol('iterator');

var arrayMethodIsStrict = function (METHOD_NAME, argument) {
  var method = [][METHOD_NAME];
  return !!method && fails(function () {
    // eslint-disable-next-line no-useless-call,no-throw-literal
    method.call(null, argument || function () { throw 1; }, 1);
  });
};

var defineProperty$3 = Object.defineProperty;
var cache = {};

var thrower = function (it) { throw it; };

var arrayMethodUsesToLength = function (METHOD_NAME, options) {
  if (has(cache, METHOD_NAME)) return cache[METHOD_NAME];
  if (!options) options = {};
  var method = [][METHOD_NAME];
  var ACCESSORS = has(options, 'ACCESSORS') ? options.ACCESSORS : false;
  var argument0 = has(options, 0) ? options[0] : thrower;
  var argument1 = has(options, 1) ? options[1] : undefined;

  return cache[METHOD_NAME] = !!method && !fails(function () {
    if (ACCESSORS && !descriptors) return true;
    var O = { length: -1 };

    if (ACCESSORS) defineProperty$3(O, 1, { enumerable: true, get: thrower });
    else O[1] = 1;

    method.call(O, argument0, argument1);
  });
};

var $forEach$1 = arrayIteration.forEach;



var STRICT_METHOD = arrayMethodIsStrict('forEach');
var USES_TO_LENGTH = arrayMethodUsesToLength('forEach');

// `Array.prototype.forEach` method implementation
// https://tc39.github.io/ecma262/#sec-array.prototype.foreach
var arrayForEach = (!STRICT_METHOD || !USES_TO_LENGTH) ? function forEach(callbackfn /* , thisArg */) {
  return $forEach$1(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);
} : [].forEach;

// `Array.prototype.forEach` method
// https://tc39.github.io/ecma262/#sec-array.prototype.foreach
_export({ target: 'Array', proto: true, forced: [].forEach != arrayForEach }, {
  forEach: arrayForEach
});

var $indexOf = arrayIncludes.indexOf;



var nativeIndexOf = [].indexOf;

var NEGATIVE_ZERO = !!nativeIndexOf && 1 / [1].indexOf(1, -0) < 0;
var STRICT_METHOD$1 = arrayMethodIsStrict('indexOf');
var USES_TO_LENGTH$1 = arrayMethodUsesToLength('indexOf', { ACCESSORS: true, 1: 0 });

// `Array.prototype.indexOf` method
// https://tc39.github.io/ecma262/#sec-array.prototype.indexof
_export({ target: 'Array', proto: true, forced: NEGATIVE_ZERO || !STRICT_METHOD$1 || !USES_TO_LENGTH$1 }, {
  indexOf: function indexOf(searchElement /* , fromIndex = 0 */) {
    return NEGATIVE_ZERO
      // convert -0 to +0
      ? nativeIndexOf.apply(this, arguments) || 0
      : $indexOf(this, searchElement, arguments.length > 1 ? arguments[1] : undefined);
  }
});

var UNSCOPABLES = wellKnownSymbol('unscopables');
var ArrayPrototype = Array.prototype;

// Array.prototype[@@unscopables]
// https://tc39.github.io/ecma262/#sec-array.prototype-@@unscopables
if (ArrayPrototype[UNSCOPABLES] == undefined) {
  objectDefineProperty.f(ArrayPrototype, UNSCOPABLES, {
    configurable: true,
    value: objectCreate(null)
  });
}

// add a key to Array.prototype[@@unscopables]
var addToUnscopables = function (key) {
  ArrayPrototype[UNSCOPABLES][key] = true;
};

var iterators = {};

var correctPrototypeGetter = !fails(function () {
  function F() { /* empty */ }
  F.prototype.constructor = null;
  return Object.getPrototypeOf(new F()) !== F.prototype;
});

var IE_PROTO$1 = sharedKey('IE_PROTO');
var ObjectPrototype$1 = Object.prototype;

// `Object.getPrototypeOf` method
// https://tc39.github.io/ecma262/#sec-object.getprototypeof
var objectGetPrototypeOf = correctPrototypeGetter ? Object.getPrototypeOf : function (O) {
  O = toObject(O);
  if (has(O, IE_PROTO$1)) return O[IE_PROTO$1];
  if (typeof O.constructor == 'function' && O instanceof O.constructor) {
    return O.constructor.prototype;
  } return O instanceof Object ? ObjectPrototype$1 : null;
};

var ITERATOR = wellKnownSymbol('iterator');
var BUGGY_SAFARI_ITERATORS = false;

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

// `%IteratorPrototype%` object
// https://tc39.github.io/ecma262/#sec-%iteratorprototype%-object
var IteratorPrototype, PrototypeOfArrayIteratorPrototype, arrayIterator;

if ([].keys) {
  arrayIterator = [].keys();
  // Safari 8 has buggy iterators w/o `next`
  if (!('next' in arrayIterator)) BUGGY_SAFARI_ITERATORS = true;
  else {
    PrototypeOfArrayIteratorPrototype = objectGetPrototypeOf(objectGetPrototypeOf(arrayIterator));
    if (PrototypeOfArrayIteratorPrototype !== Object.prototype) IteratorPrototype = PrototypeOfArrayIteratorPrototype;
  }
}

if (IteratorPrototype == undefined) IteratorPrototype = {};

// 25.1.2.1.1 %IteratorPrototype%[@@iterator]()
if ( !has(IteratorPrototype, ITERATOR)) {
  createNonEnumerableProperty(IteratorPrototype, ITERATOR, returnThis);
}

var iteratorsCore = {
  IteratorPrototype: IteratorPrototype,
  BUGGY_SAFARI_ITERATORS: BUGGY_SAFARI_ITERATORS
};

var IteratorPrototype$1 = iteratorsCore.IteratorPrototype;





var returnThis$1 = function () { return this; };

var createIteratorConstructor = function (IteratorConstructor, NAME, next) {
  var TO_STRING_TAG = NAME + ' Iterator';
  IteratorConstructor.prototype = objectCreate(IteratorPrototype$1, { next: createPropertyDescriptor(1, next) });
  setToStringTag(IteratorConstructor, TO_STRING_TAG, false);
  iterators[TO_STRING_TAG] = returnThis$1;
  return IteratorConstructor;
};

var aPossiblePrototype = function (it) {
  if (!isObject(it) && it !== null) {
    throw TypeError("Can't set " + String(it) + ' as a prototype');
  } return it;
};

// `Object.setPrototypeOf` method
// https://tc39.github.io/ecma262/#sec-object.setprototypeof
// Works with __proto__ only. Old v8 can't work with null proto objects.
/* eslint-disable no-proto */
var objectSetPrototypeOf = Object.setPrototypeOf || ('__proto__' in {} ? function () {
  var CORRECT_SETTER = false;
  var test = {};
  var setter;
  try {
    setter = Object.getOwnPropertyDescriptor(Object.prototype, '__proto__').set;
    setter.call(test, []);
    CORRECT_SETTER = test instanceof Array;
  } catch (error) { /* empty */ }
  return function setPrototypeOf(O, proto) {
    anObject(O);
    aPossiblePrototype(proto);
    if (CORRECT_SETTER) setter.call(O, proto);
    else O.__proto__ = proto;
    return O;
  };
}() : undefined);

var IteratorPrototype$2 = iteratorsCore.IteratorPrototype;
var BUGGY_SAFARI_ITERATORS$1 = iteratorsCore.BUGGY_SAFARI_ITERATORS;
var ITERATOR$1 = wellKnownSymbol('iterator');
var KEYS = 'keys';
var VALUES = 'values';
var ENTRIES = 'entries';

var returnThis$2 = function () { return this; };

var defineIterator = function (Iterable, NAME, IteratorConstructor, next, DEFAULT, IS_SET, FORCED) {
  createIteratorConstructor(IteratorConstructor, NAME, next);

  var getIterationMethod = function (KIND) {
    if (KIND === DEFAULT && defaultIterator) return defaultIterator;
    if (!BUGGY_SAFARI_ITERATORS$1 && KIND in IterablePrototype) return IterablePrototype[KIND];
    switch (KIND) {
      case KEYS: return function keys() { return new IteratorConstructor(this, KIND); };
      case VALUES: return function values() { return new IteratorConstructor(this, KIND); };
      case ENTRIES: return function entries() { return new IteratorConstructor(this, KIND); };
    } return function () { return new IteratorConstructor(this); };
  };

  var TO_STRING_TAG = NAME + ' Iterator';
  var INCORRECT_VALUES_NAME = false;
  var IterablePrototype = Iterable.prototype;
  var nativeIterator = IterablePrototype[ITERATOR$1]
    || IterablePrototype['@@iterator']
    || DEFAULT && IterablePrototype[DEFAULT];
  var defaultIterator = !BUGGY_SAFARI_ITERATORS$1 && nativeIterator || getIterationMethod(DEFAULT);
  var anyNativeIterator = NAME == 'Array' ? IterablePrototype.entries || nativeIterator : nativeIterator;
  var CurrentIteratorPrototype, methods, KEY;

  // fix native
  if (anyNativeIterator) {
    CurrentIteratorPrototype = objectGetPrototypeOf(anyNativeIterator.call(new Iterable()));
    if (IteratorPrototype$2 !== Object.prototype && CurrentIteratorPrototype.next) {
      if ( objectGetPrototypeOf(CurrentIteratorPrototype) !== IteratorPrototype$2) {
        if (objectSetPrototypeOf) {
          objectSetPrototypeOf(CurrentIteratorPrototype, IteratorPrototype$2);
        } else if (typeof CurrentIteratorPrototype[ITERATOR$1] != 'function') {
          createNonEnumerableProperty(CurrentIteratorPrototype, ITERATOR$1, returnThis$2);
        }
      }
      // Set @@toStringTag to native iterators
      setToStringTag(CurrentIteratorPrototype, TO_STRING_TAG, true);
    }
  }

  // fix Array#{values, @@iterator}.name in V8 / FF
  if (DEFAULT == VALUES && nativeIterator && nativeIterator.name !== VALUES) {
    INCORRECT_VALUES_NAME = true;
    defaultIterator = function values() { return nativeIterator.call(this); };
  }

  // define iterator
  if ( IterablePrototype[ITERATOR$1] !== defaultIterator) {
    createNonEnumerableProperty(IterablePrototype, ITERATOR$1, defaultIterator);
  }
  iterators[NAME] = defaultIterator;

  // export additional methods
  if (DEFAULT) {
    methods = {
      values: getIterationMethod(VALUES),
      keys: IS_SET ? defaultIterator : getIterationMethod(KEYS),
      entries: getIterationMethod(ENTRIES)
    };
    if (FORCED) for (KEY in methods) {
      if (BUGGY_SAFARI_ITERATORS$1 || INCORRECT_VALUES_NAME || !(KEY in IterablePrototype)) {
        redefine(IterablePrototype, KEY, methods[KEY]);
      }
    } else _export({ target: NAME, proto: true, forced: BUGGY_SAFARI_ITERATORS$1 || INCORRECT_VALUES_NAME }, methods);
  }

  return methods;
};

var ARRAY_ITERATOR = 'Array Iterator';
var setInternalState$1 = internalState.set;
var getInternalState$1 = internalState.getterFor(ARRAY_ITERATOR);

// `Array.prototype.entries` method
// https://tc39.github.io/ecma262/#sec-array.prototype.entries
// `Array.prototype.keys` method
// https://tc39.github.io/ecma262/#sec-array.prototype.keys
// `Array.prototype.values` method
// https://tc39.github.io/ecma262/#sec-array.prototype.values
// `Array.prototype[@@iterator]` method
// https://tc39.github.io/ecma262/#sec-array.prototype-@@iterator
// `CreateArrayIterator` internal method
// https://tc39.github.io/ecma262/#sec-createarrayiterator
var es_array_iterator = defineIterator(Array, 'Array', function (iterated, kind) {
  setInternalState$1(this, {
    type: ARRAY_ITERA