1 files changed, 12 insertions, 0 deletions
diff --git a/node_modules/core-js/library/modules/es6.weak-set.js b/node_modules/core-js/library/modules/es6.weak-set.js
new file mode 100644
index 000000000..77d01b6ba
--- /dev/null
+++ b/node_modules/core-js/library/modules/es6.weak-set.js
@@ -0,0 +1,12 @@
+'use strict';
+var weak = require('./_collection-weak');
+
+// 23.4 WeakSet Objects
+require('./_collection')('WeakSet', function(get){
+  return function WeakSet(){ return get(this, arguments.length > 0 ? arguments[0] : undefined); };
+}, {
+  // 23.4.3.1 WeakSet.prototype.add(value)
+  add: function add(value){
+    return weak.def(this, value, true);
+  }
+}, weak, false, true);
+\ No newline at end of file