--- /dev/null
+'use strict';
+var $ = require('../internals/export');
+var IS_PURE = require('../internals/is-pure');
+var collectionAddAll = require('../internals/collection-add-all');
+
+// `WeakSet.prototype.addAll` method
+// https://github.com/tc39/proposal-collection-methods
+$({ target: 'WeakSet', proto: true, real: true, forced: IS_PURE }, {
+ addAll: function addAll(/* ...elements */) {
+ return collectionAddAll.apply(this, arguments);
+ }
+});