1 files changed, 85 insertions, 0 deletions
diff --git a/node_modules/core-js/library/modules/_collection-weak.js b/node_modules/core-js/library/modules/_collection-weak.js
new file mode 100644
index 00000000..04d3af5a
--- /dev/null
+++ b/node_modules/core-js/library/modules/_collection-weak.js
@@ -0,0 +1,85 @@
+'use strict';
+var redefineAll = require('./_redefine-all');
+var getWeak = require('./_meta').getWeak;
+var anObject = require('./_an-object');
+var isObject = require('./_is-object');
+var anInstance = require('./_an-instance');
+var forOf = require('./_for-of');
+var createArrayMethod = require('./_array-methods');
+var $has = require('./_has');
+var validate = require('./_validate-collection');
+var arrayFind = createArrayMethod(5);
+var arrayFindIndex = createArrayMethod(6);
+var id = 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;
+  }
+};
+
+module.exports = {
+  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++;      // 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(validate(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(validate(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
+};