1 /* This Source Code Form is subject to the terms of the Mozilla Public
2 * License, v. 2.0. If a copy of the MPL was not distributed with this
3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
8 * Utility function, that is useful for creating objects that inherit from other
9 * objects, without associated classes.
11 * Replacement for `extends` API from "sdk/core/heritage".
13 exports.extend = function(prototype, properties) {
14 return Object.create(prototype, Object.getOwnPropertyDescriptors(properties));