/* * Copyright (C) 2015 Jordan Harband. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ function assign(target/*[*/, /*...*/sources/*] */) { "use strict"; if (target == null) throw new @TypeError("can't convert " + target + " to object"); var objTarget = @Object(target); var s, nextSource, from, i, keys, nextKey, desc; for (s = 1; s < arguments.length; ++s) { nextSource = arguments[s]; if (nextSource != null) { from = @Object(nextSource); // TODO: replace @objectKeys + @objectGetOwnPropertySymbols with single @OwnPropertyKeys c++ operation keys = @objectKeys(from); for (i = 0; i < keys.length; ++i) { nextKey = keys[i]; desc = @objectGetOwnPropertyDescriptor(from, nextKey); if (typeof desc !== "undefined" && desc.enumerable) { objTarget[nextKey] = from[nextKey]; } } keys = @objectGetOwnPropertySymbols(from); for (i = 0; i < keys.length; ++i) { nextKey = keys[i]; desc = @objectGetOwnPropertyDescriptor(from, nextKey); if (typeof desc !== "undefined" && desc.enumerable) { objTarget[nextKey] = from[nextKey]; } } } } return objTarget; }