| 123456789101112131415161718 | 'use strict';var $ = require('../internals/export');var aWeakSet = require('../internals/a-weak-set');var remove = require('../internals/weak-set-helpers').remove;// `WeakSet.prototype.deleteAll` method// https://github.com/tc39/proposal-collection-methods$({ target: 'WeakSet', proto: true, real: true, forced: true }, {  deleteAll: function deleteAll(/* ...elements */) {    var collection = aWeakSet(this);    var allDeleted = true;    var wasDeleted;    for (var k = 0, len = arguments.length; k < len; k++) {      wasDeleted = remove(collection, arguments[k]);      allDeleted = allDeleted && wasDeleted;    } return !!allDeleted;  }});
 |