'use strict'; var $ = require('../internals/export'); var WeakSetHelpers = require('../internals/weak-set-helpers'); var createCollectionFrom = require('../internals/collection-from'); // `WeakSet.from` method // https://tc39.github.io/proposal-setmap-offrom/#sec-weakset.from $({ target: 'WeakSet', stat: true, forced: true }, { from: createCollectionFrom(WeakSetHelpers.WeakSet, WeakSetHelpers.add, false) });