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FF26- bug: ArrayBuffers are non-extensible, but Object.isExtensible does not report it\nvar fails = require('../internals/fails');\n\nmodule.exports = fails(function () {\n  if (typeof ArrayBuffer == 'function') {\n    var buffer = new ArrayBuffer(8);\n    // eslint-disable-next-line es-x/no-object-isextensible, es-x/no-object-defineproperty -- safe\n    if (Object.isExtensible(buffer)) Object.defineProperty(buffer, 'a', { value: 8 });\n  }\n});\n","'use strict';\nvar defineProperty = require('../internals/object-define-property').f;\nvar create = require('../internals/object-create');\nvar defineBuiltIns = require('../internals/define-built-ins');\nvar bind = require('../internals/function-bind-context');\nvar anInstance = require('../internals/an-instance');\nvar iterate = require('../internals/iterate');\nvar defineIterator = require('../internals/define-iterator');\nvar setSpecies = require('../internals/set-species');\nvar DESCRIPTORS = require('../internals/descriptors');\nvar fastKey = require('../internals/internal-metadata').fastKey;\nvar InternalStateModule = require('../internals/internal-state');\n\nvar setInternalState = InternalStateModule.set;\nvar internalStateGetterFor = InternalStateModule.getterFor;\n\nmodule.exports = {\n  getConstructor: function (wrapper, CONSTRUCTOR_NAME, IS_MAP, ADDER) {\n    var Constructor = wrapper(function (that, iterable) {\n      anInstance(that, Prototype);\n      setInternalState(that, {\n        type: CONSTRUCTOR_NAME,\n        index: create(null),\n        first: undefined,\n        last: undefined,\n        size: 0\n      });\n      if (!DESCRIPTORS) that.size = 0;\n      if (iterable != undefined) iterate(iterable, that[ADDER], { that: that, AS_ENTRIES: IS_MAP });\n    });\n\n    var Prototype = Constructor.prototype;\n\n    var getInternalState = internalStateGetterFor(CONSTRUCTOR_NAME);\n\n    var define = function (that, key, value) {\n      var state = getInternalState(that);\n      var entry = getEntry(that, key);\n      var previous, index;\n      // change existing entry\n      if (entry) {\n        entry.value = value;\n      // create new entry\n      } else {\n        state.last = entry = {\n          index: index = fastKey(key, true),\n          key: key,\n          value: value,\n          previous: previous = state.last,\n          next: undefined,\n          removed: false\n        };\n        if (!state.first) state.first = entry;\n        if (previous) previous.next = entry;\n        if (DESCRIPTORS) state.size++;\n        else that.size++;\n        // add to index\n        if (index !== 'F') state.index[index] = entry;\n      } return that;\n    };\n\n    var getEntry = function (that, key) {\n      var state = getInternalState(that);\n      // fast case\n      var index = fastKey(key);\n      var entry;\n      if (index !== 'F') return state.index[index];\n      // frozen object case\n      for (entry = state.first; entry; entry = entry.next) {\n        if (entry.key == key) return entry;\n      }\n    };\n\n    defineBuiltIns(Prototype, {\n      // `{ Map, Set }.prototype.clear()` methods\n      // https://tc39.es/ecma262/#sec-map.prototype.clear\n      // https://tc39.es/ecma262/#sec-set.prototype.clear\n      clear: function clear() {\n        var that = this;\n        var state = getInternalState(that);\n        var data = state.index;\n        var entry = state.first;\n        while (entry) {\n          entry.removed = true;\n          if (entry.previous) entry.previous = entry.previous.next = undefined;\n          delete data[entry.index];\n          entry = entry.next;\n        }\n        state.first = state.last = undefined;\n        if (DESCRIPTORS) state.size = 0;\n        else that.size = 0;\n      },\n      // `{ Map, Set }.prototype.delete(key)` methods\n      // https://tc39.es/ecma262/#sec-map.prototype.delete\n      // https://tc39.es/ecma262/#sec-set.prototype.delete\n      'delete': function (key) {\n        var that = this;\n        var state = getInternalState(that);\n        var entry = getEntry(that, key);\n        if (entry) {\n          var next = entry.next;\n          var prev = entry.previous;\n          delete state.index[entry.index];\n          entry.removed = true;\n          if (prev) prev.next = next;\n          if (next) next.previous = prev;\n          if (state.first == entry) state.first = next;\n          if (state.last == entry) state.last = prev;\n          if (DESCRIPTORS) state.size--;\n          else that.size--;\n        } return !!entry;\n      },\n      // `{ Map, Set }.prototype.forEach(callbackfn, thisArg = undefined)` methods\n      // https://tc39.es/ecma262/#sec-map.prototype.foreach\n      // https://tc39.es/ecma262/#sec-set.prototype.foreach\n      forEach: function forEach(callbackfn /* , that = undefined */) {\n        var state = getInternalState(this);\n        var boundFunction = bind(callbackfn, arguments.length > 1 ? arguments[1] : undefined);\n        var entry;\n        while (entry = entry ? entry.next : state.first) {\n          boundFunction(entry.value, entry.key, this);\n          // revert to the last existing entry\n          while (entry && entry.removed) entry = entry.previous;\n        }\n      },\n      // `{ Map, Set}.prototype.has(key)` methods\n      // https://tc39.es/ecma262/#sec-map.prototype.has\n      // https://tc39.es/ecma262/#sec-set.prototype.has\n      has: function has(key) {\n        return !!getEntry(this, key);\n      }\n    });\n\n    defineBuiltIns(Prototype, IS_MAP ? {\n      // `Map.prototype.get(key)` method\n      // https://tc39.es/ecma262/#sec-map.prototype.get\n      get: function get(key) {\n        var entry = getEntry(this, key);\n        return entry && entry.value;\n      },\n      // `Map.prototype.set(key, value)` method\n      // https://tc39.es/ecma262/#sec-map.prototype.set\n      set: function set(key, value) {\n        return define(this, key === 0 ? 0 : key, value);\n      }\n    } : {\n      // `Set.prototype.add(value)` method\n      // https://tc39.es/ecma262/#sec-set.prototype.add\n      add: function add(value) {\n        return define(this, value = value === 0 ? 0 : value, value);\n      }\n    });\n    if (DESCRIPTORS) defineProperty(Prototype, 'size', {\n      get: function () {\n        return getInternalState(this).size;\n      }\n    });\n    return Constructor;\n  },\n  setStrong: function (Constructor, CONSTRUCTOR_NAME, IS_MAP) {\n    var ITERATOR_NAME = CONSTRUCTOR_NAME + ' Iterator';\n    var getInternalCollectionState = internalStateGetterFor(CONSTRUCTOR_NAME);\n    var getInternalIteratorState = internalStateGetterFor(ITERATOR_NAME);\n    // `{ Map, Set }.prototype.{ keys, values, entries, @@iterator }()` methods\n    // https://tc39.es/ecma262/#sec-map.prototype.entries\n    // https://tc39.es/ecma262/#sec-map.prototype.keys\n    // https://tc39.es/ecma262/#sec-map.prototype.values\n    // https://tc39.es/ecma262/#sec-map.prototype-@@iterator\n    // https://tc39.es/ecma262/#sec-set.prototype.entries\n    // https://tc39.es/ecma262/#sec-set.prototype.keys\n    // https://tc39.es/ecma262/#sec-set.prototype.values\n    // https://tc39.es/ecma262/#sec-set.prototype-@@iterator\n    defineIterator(Constructor, CONSTRUCTOR_NAME, function (iterated, kind) {\n      setInternalState(this, {\n        type: ITERATOR_NAME,\n        target: iterated,\n        state: getInternalCollectionState(iterated),\n        kind: kind,\n        last: undefined\n      });\n    }, function () {\n      var state = getInternalIteratorState(this);\n      var kind = state.kind;\n      var entry = state.last;\n      // revert to the last existing entry\n      while (entry && entry.removed) entry = entry.previous;\n      // get next entry\n      if (!state.target || !(state.last = entry = entry ? entry.next : state.state.first)) {\n        // or finish the iteration\n        state.target = undefined;\n        return { value: undefined, done: true };\n      }\n      // return step by kind\n      if (kind == 'keys') return { value: entry.key, done: false };\n      if (kind == 'values') return { value: entry.value, done: false };\n      return { value: [entry.key, entry.value], done: false };\n    }, IS_MAP ? 'entries' : 'values', !IS_MAP, true);\n\n    // `{ Map, Set }.prototype[@@species]` accessors\n    // https://tc39.es/ecma262/#sec-get-map-@@species\n    // https://tc39.es/ecma262/#sec-get-set-@@species\n    setSpecies(CONSTRUCTOR_NAME);\n  }\n};\n","'use strict';\nvar $ = require('../internals/export');\nvar global = require('../internals/global');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar isForced = require('../internals/is-forced');\nvar defineBuiltIn = require('../internals/define-built-in');\nvar InternalMetadataModule = require('../internals/internal-metadata');\nvar iterate = require('../internals/iterate');\nvar anInstance = require('../internals/an-instance');\nvar isCallable = require('../internals/is-callable');\nvar isObject = require('../internals/is-object');\nvar fails = require('../internals/fails');\nvar checkCorrectnessOfIteration = require('../internals/check-correctness-of-iteration');\nvar setToStringTag = require('../internals/set-to-string-tag');\nvar inheritIfRequired = require('../internals/inherit-if-required');\n\nmodule.exports = function (CONSTRUCTOR_NAME, wrapper, common) {\n  var IS_MAP = CONSTRUCTOR_NAME.indexOf('Map') !== -1;\n  var IS_WEAK = CONSTRUCTOR_NAME.indexOf('Weak') !== -1;\n  var ADDER = IS_MAP ? 'set' : 'add';\n  var NativeConstructor = global[CONSTRUCTOR_NAME];\n  var NativePrototype = NativeConstructor && NativeConstructor.prototype;\n  var Constructor = NativeConstructor;\n  var exported = {};\n\n  var fixMethod = function (KEY) {\n    var uncurriedNativeMethod = uncurryThis(NativePrototype[KEY]);\n    defineBuiltIn(NativePrototype, KEY,\n      KEY == 'add' ? function add(value) {\n        uncurriedNativeMethod(this, value === 0 ? 0 : value);\n        return this;\n      } : KEY == 'delete' ? function (key) {\n        return IS_WEAK && !isObject(key) ? false : uncurriedNativeMethod(this, key === 0 ? 0 : key);\n      } : KEY == 'get' ? function get(key) {\n        return IS_WEAK && !isObject(key) ? undefined : uncurriedNativeMethod(this, key === 0 ? 0 : key);\n      } : KEY == 'has' ? function has(key) {\n        return IS_WEAK && !isObject(key) ? false : uncurriedNativeMethod(this, key === 0 ? 0 : key);\n      } : function set(key, value) {\n        uncurriedNativeMethod(this, key === 0 ? 0 : key, value);\n        return this;\n      }\n    );\n  };\n\n  var REPLACE = isForced(\n    CONSTRUCTOR_NAME,\n    !isCallable(NativeConstructor) || !(IS_WEAK || NativePrototype.forEach && !fails(function () {\n      new NativeConstructor().entries().next();\n    }))\n  );\n\n  if (REPLACE) {\n    // create collection constructor\n    Constructor = common.getConstructor(wrapper, CONSTRUCTOR_NAME, IS_MAP, ADDER);\n    InternalMetadataModule.enable();\n  } else if (isForced(CONSTRUCTOR_NAME, true)) {\n    var instance = new Constructor();\n    // early implementations not supports chaining\n    var HASNT_CHAINING = instance[ADDER](IS_WEAK ? {} : -0, 1) != instance;\n    // V8 ~ Chromium 40- weak-collections throws on primitives, but should return false\n    var THROWS_ON_PRIMITIVES = fails(function () { instance.has(1); });\n    // most early implementations doesn't supports iterables, most modern - not close it correctly\n    // eslint-disable-next-line no-new -- required for testing\n    var ACCEPT_ITERABLES = checkCorrectnessOfIteration(function (iterable) { new NativeConstructor(iterable); });\n    // for early implementations -0 and +0 not the same\n    var BUGGY_ZERO = !IS_WEAK && fails(function () {\n      // V8 ~ Chromium 42- fails only with 5+ elements\n      var $instance = new NativeConstructor();\n      var index = 5;\n      while (index--) $instance[ADDER](index, index);\n      return !$instance.has(-0);\n    });\n\n    if (!ACCEPT_ITERABLES) {\n      Constructor = wrapper(function (dummy, iterable) {\n        anInstance(dummy, NativePrototype);\n        var that = inheritIfRequired(new NativeConstructor(), dummy, Constructor);\n        if (iterable != undefined) iterate(iterable, that[ADDER], { that: that, AS_ENTRIES: IS_MAP });\n        return that;\n      });\n      Constructor.prototype = NativePrototype;\n      NativePrototype.constructor = Constructor;\n    }\n\n    if (THROWS_ON_PRIMITIVES || BUGGY_ZERO) {\n      fixMethod('delete');\n      fixMethod('has');\n      IS_MAP && fixMethod('get');\n    }\n\n    if (BUGGY_ZERO || HASNT_CHAINING) fixMethod(ADDER);\n\n    // weak collections should not contains .clear method\n    if (IS_WEAK && NativePrototype.clear) delete NativePrototype.clear;\n  }\n\n  exported[CONSTRUCTOR_NAME] = Constructor;\n  $({ global: true, constructor: true, forced: Constructor != NativeConstructor }, exported);\n\n  setToStringTag(Constructor, CONSTRUCTOR_NAME);\n\n  if (!IS_WEAK) common.setStrong(Constructor, CONSTRUCTOR_NAME, IS_MAP);\n\n  return Constructor;\n};\n","var defineBuiltIn = require('../internals/define-built-in');\n\nmodule.exports = function (target, src, options) {\n  for (var key in src) defineBuiltIn(target, key, src[key], options);\n  return target;\n};\n","var fails = require('../internals/fails');\n\nmodule.exports = !fails(function () {\n  // eslint-disable-next-line es-x/no-object-isextensible, es-x/no-object-preventextensions -- required for testing\n  return Object.isExtensible(Object.preventExtensions({}));\n});\n","var $ = require('../internals/export');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar hiddenKeys = require('../internals/hidden-keys');\nvar isObject = require('../internals/is-object');\nvar hasOwn = require('../internals/has-own-property');\nvar defineProperty = require('../internals/object-define-property').f;\nvar getOwnPropertyNamesModule = require('../internals/object-get-own-property-names');\nvar getOwnPropertyNamesExternalModule = require('../internals/object-get-own-property-names-external');\nvar isExtensible = require('../internals/object-is-extensible');\nvar uid = require('../internals/uid');\nvar FREEZING = require('../internals/freezing');\n\nvar REQUIRED = false;\nvar METADATA = uid('meta');\nvar id = 0;\n\nvar setMetadata = function (it) {\n  defineProperty(it, METADATA, { value: {\n    objectID: 'O' + id++, // object ID\n    weakData: {}          // weak collections IDs\n  } });\n};\n\nvar fastKey = function (it, create) {\n  // return a primitive with prefix\n  if (!isObject(it)) return typeof it == 'symbol' ? it : (typeof it == 'string' ? 'S' : 'P') + it;\n  if (!hasOwn(it, METADATA)) {\n    // can't set metadata to uncaught frozen object\n    if (!isExtensible(it)) return 'F';\n    // not necessary to add metadata\n    if (!create) return 'E';\n    // add missing metadata\n    setMetadata(it);\n  // return object ID\n  } return it[METADATA].objectID;\n};\n\nvar getWeakData = function (it, create) {\n  if (!hasOwn(it, METADATA)) {\n    // can't set metadata to uncaught frozen object\n    if (!isExtensible(it)) return true;\n    // not necessary to add metadata\n    if (!create) return false;\n    // add missing metadata\n    setMetadata(it);\n  // return the store of weak collections IDs\n  } return it[METADATA].weakData;\n};\n\n// add metadata on freeze-family methods calling\nvar onFreeze = function (it) {\n  if (FREEZING && REQUIRED && isExtensible(it) && !hasOwn(it, METADATA)) setMetadata(it);\n  return it;\n};\n\nvar enable = function () {\n  meta.enable = function () { /* empty */ };\n  REQUIRED = true;\n  var getOwnPropertyNames = getOwnPropertyNamesModule.f;\n  var splice = uncurryThis([].splice);\n  var test = {};\n  test[METADATA] = 1;\n\n  // prevent exposing of metadata key\n  if (getOwnPropertyNames(test).length) {\n    getOwnPropertyNamesModule.f = function (it) {\n      var result = getOwnPropertyNames(it);\n      for (var i = 0, length = result.length; i < length; i++) {\n        if (result[i] === METADATA) {\n          splice(result, i, 1);\n          break;\n        }\n      } return result;\n    };\n\n    $({ target: 'Object', stat: true, forced: true }, {\n      getOwnPropertyNames: getOwnPropertyNamesExternalModule.f\n    });\n  }\n};\n\nvar meta = module.exports = {\n  enable: enable,\n  fastKey: fastKey,\n  getWeakData: getWeakData,\n  onFreeze: onFreeze\n};\n\nhiddenKeys[METADATA] = true;\n","var fails = require('../internals/fails');\nvar isObject = require('../internals/is-object');\nvar classof = require('../internals/classof-raw');\nvar ARRAY_BUFFER_NON_EXTENSIBLE = require('../internals/array-buffer-non-extensible');\n\n// eslint-disable-next-line es-x/no-object-isextensible -- safe\nvar $isExtensible = Object.isExtensible;\nvar FAILS_ON_PRIMITIVES = fails(function () { $isExtensible(1); });\n\n// `Object.isExtensible` method\n// https://tc39.es/ecma262/#sec-object.isextensible\nmodule.exports = (FAILS_ON_PRIMITIVES || ARRAY_BUFFER_NON_EXTENSIBLE) ? function isExtensible(it) {\n  if (!isObject(it)) return false;\n  if (ARRAY_BUFFER_NON_EXTENSIBLE && classof(it) == 'ArrayBuffer') return false;\n  return $isExtensible ? $isExtensible(it) : true;\n} : $isExtensible;\n","var call = require('../internals/function-call');\nvar hasOwn = require('../internals/has-own-property');\nvar isPrototypeOf = require('../internals/object-is-prototype-of');\nvar regExpFlags = require('../internals/regexp-flags');\n\nvar RegExpPrototype = RegExp.prototype;\n\nmodule.exports = function (R) {\n  var flags = R.flags;\n  return flags === undefined && !('flags' in RegExpPrototype) && !hasOwn(R, 'flags') && isPrototypeOf(RegExpPrototype, R)\n    ? call(regExpFlags, R) : flags;\n};\n","'use strict';\nvar PROPER_FUNCTION_NAME = require('../internals/function-name').PROPER;\nvar defineBuiltIn = require('../internals/define-built-in');\nvar anObject = require('../internals/an-object');\nvar $toString = require('../internals/to-string');\nvar fails = require('../internals/fails');\nvar getRegExpFlags = require('../internals/regexp-get-flags');\n\nvar TO_STRING = 'toString';\nvar RegExpPrototype = RegExp.prototype;\nvar n$ToString = RegExpPrototype[TO_STRING];\n\nvar NOT_GENERIC = fails(function () { return n$ToString.call({ source: 'a', flags: 'b' }) != '/a/b'; });\n// FF44- RegExp#toString has a wrong name\nvar INCORRECT_NAME = PROPER_FUNCTION_NAME && n$ToString.name != TO_STRING;\n\n// `RegExp.prototype.toString` method\n// https://tc39.es/ecma262/#sec-regexp.prototype.tostring\nif (NOT_GENERIC || INCORRECT_NAME) {\n  defineBuiltIn(RegExp.prototype, TO_STRING, function toString() {\n    var R = anObject(this);\n    var pattern = $toString(R.source);\n    var flags = $toString(getRegExpFlags(R));\n    return '/' + pattern + '/' + flags;\n  }, { unsafe: true });\n}\n"],"sourceRoot":""}