// Copyright 2018 the V8 project authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. // Flags: --harmony-intl-list-format var locales = ["tlh", "id", "en"]; var input = ["a", "b", "c"]; var referenceListFormat = new Intl.ListFormat(locales); var referenceFormatted = referenceListFormat.format(input); class MyFormat extends Intl.ListFormat { constructor(locales, options) { super(locales, options); // could initialize MyListFormat properties } // could add methods to MyListFormat.prototype } var format = new MyFormat(locales); var actual = format.format(input); assertEquals(actual, referenceFormatted);