.config/coc/extensions/node_modules/coc-prettier/node_modules/core-js/modules/es.weak-map.js

   1 'use strict';
   2 var global = require('../internals/global');
   3 var uncurryThis = require('../internals/function-uncurry-this');
   4 var redefineAll = require('../internals/redefine-all');
   5 var InternalMetadataModule = require('../internals/internal-metadata');
   6 var collection = require('../internals/collection');
   7 var collectionWeak = require('../internals/collection-weak');
   8 var isObject = require('../internals/is-object');
   9 var isExtensible = require('../internals/object-is-extensible');
  10 var enforceIternalState = require('../internals/internal-state').enforce;
  11 var NATIVE_WEAK_MAP = require('../internals/native-weak-map');
  12
  13 var IS_IE11 = !global.ActiveXObject && 'ActiveXObject' in global;
  14 var InternalWeakMap;
  15
  16 var wrapper = function (init) {
  17   return function WeakMap() {
  18     return init(this, arguments.length ? arguments[0] : undefined);
  19   };
  20 };
  21
  22 // `WeakMap` constructor
  23 // https://tc39.es/ecma262/#sec-weakmap-constructor
  24 var $WeakMap = collection('WeakMap', wrapper, collectionWeak);
  25
  26 // IE11 WeakMap frozen keys fix
  27 // We can't use feature detection because it crash some old IE builds
  28 // https://github.com/zloirock/core-js/issues/485
  29 if (NATIVE_WEAK_MAP && IS_IE11) {
  30   InternalWeakMap = collectionWeak.getConstructor(wrapper, 'WeakMap', true);
  31   InternalMetadataModule.enable();
  32   var WeakMapPrototype = $WeakMap.prototype;
  33   var nativeDelete = uncurryThis(WeakMapPrototype['delete']);
  34   var nativeHas = uncurryThis(WeakMapPrototype.has);
  35   var nativeGet = uncurryThis(WeakMapPrototype.get);
  36   var nativeSet = uncurryThis(WeakMapPrototype.set);
  37   redefineAll(WeakMapPrototype, {
  38     'delete': function (key) {
  39       if (isObject(key) && !isExtensible(key)) {
  40         var state = enforceIternalState(this);
  41         if (!state.frozen) state.frozen = new InternalWeakMap();
  42         return nativeDelete(this, key) || state.frozen['delete'](key);
  43       } return nativeDelete(this, key);
  44     },
  45     has: function has(key) {
  46       if (isObject(key) && !isExtensible(key)) {
  47         var state = enforceIternalState(this);
  48         if (!state.frozen) state.frozen = new InternalWeakMap();
  49         return nativeHas(this, key) || state.frozen.has(key);
  50       } return nativeHas(this, key);
  51     },
  52     get: function get(key) {
  53       if (isObject(key) && !isExtensible(key)) {
  54         var state = enforceIternalState(this);
  55         if (!state.frozen) state.frozen = new InternalWeakMap();
  56         return nativeHas(this, key) ? nativeGet(this, key) : state.frozen.get(key);
  57       } return nativeGet(this, key);
  58     },
  59     set: function set(key, value) {
  60       if (isObject(key) && !isExtensible(key)) {
  61         var state = enforceIternalState(this);
  62         if (!state.frozen) state.frozen = new InternalWeakMap();
  63         nativeHas(this, key) ? nativeSet(this, key, value) : state.frozen.set(key, value);
  64       } else nativeSet(this, key, value);
  65       return this;
  66     }
  67   });
  68 }