Rewriting Project

1 files changed, 67 insertions, 0 deletions

diff --git a/node_modules/core-js/modules/es.weak-map.js b/node_modules/core-js/modules/es.weak-map.js
new file mode 100644
index 0000000..38f2f72
--- /dev/null
+++ b/node_modules/core-js/modules/es.weak-map.js
@@ -0,0 +1,67 @@
+'use strict';
+var global = require('../internals/global');
+var redefineAll = require('../internals/redefine-all');
+var InternalMetadataModule = require('../internals/internal-metadata');
+var collection = require('../internals/collection');
+var collectionWeak = require('../internals/collection-weak');
+var isObject = require('../internals/is-object');
+var enforceIternalState = require('../internals/internal-state').enforce;
+var NATIVE_WEAK_MAP = require('../internals/native-weak-map');
+
+var IS_IE11 = !global.ActiveXObject && 'ActiveXObject' in global;
+var isExtensible = Object.isExtensible;
+var InternalWeakMap;
+
+var wrapper = function (init) {
+  return function WeakMap() {
+    return init(this, arguments.length ? arguments[0] : undefined);
+  };
+};
+
+// `WeakMap` constructor
+// https://tc39.github.io/ecma262/#sec-weakmap-constructor
+var $WeakMap = module.exports = collection('WeakMap', wrapper, collectionWeak);
+
+// IE11 WeakMap frozen keys fix
+// We can't use feature detection because it crash some old IE builds
+// https://github.com/zloirock/core-js/issues/485
+if (NATIVE_WEAK_MAP && IS_IE11) {
+  InternalWeakMap = collectionWeak.getConstructor(wrapper, 'WeakMap', true);
+  InternalMetadataModule.REQUIRED = true;
+  var WeakMapPrototype = $WeakMap.prototype;
+  var nativeDelete = WeakMapPrototype['delete'];
+  var nativeHas = WeakMapPrototype.has;
+  var nativeGet = WeakMapPrototype.get;
+  var nativeSet = WeakMapPrototype.set;
+  redefineAll(WeakMapPrototype, {
+    'delete': function (key) {
+      if (isObject(key) && !isExtensible(key)) {
+        var state = enforceIternalState(this);
+        if (!state.frozen) state.frozen = new InternalWeakMap();
+        return nativeDelete.call(this, key) || state.frozen['delete'](key);
+      } return nativeDelete.call(this, key);
+    },
+    has: function has(key) {
+      if (isObject(key) && !isExtensible(key)) {
+        var state = enforceIternalState(this);
+        if (!state.frozen) state.frozen = new InternalWeakMap();
+        return nativeHas.call(this, key) || state.frozen.has(key);
+      } return nativeHas.call(this, key);
+    },
+    get: function get(key) {
+      if (isObject(key) && !isExtensible(key)) {
+        var state = enforceIternalState(this);
+        if (!state.frozen) state.frozen = new InternalWeakMap();
+        return nativeHas.call(this, key) ? nativeGet.call(this, key) : state.frozen.get(key);
+      } return nativeGet.call(this, key);
+    },
+    set: function set(key, value) {
+      if (isObject(key) && !isExtensible(key)) {
+        var state = enforceIternalState(this);
+        if (!state.frozen) state.frozen = new InternalWeakMap();
+        nativeHas.call(this, key) ? nativeSet.call(this, key, value) : state.frozen.set(key, value);
+      } else nativeSet.call(this, key, value);
+      return this;
+    }
+  });
+}