Babel plugin that replaces
Object.assign() with the extends helper.
Useful to reduce the need for additional polyfills or libraries when you want something that extends objects in browsers without native support.
Thanks to @sebmck for the implementation.
Instead of using
_.extend(obj1, obj2...) or
xtend(obj1, obj2...) just use
Object.assign in your code and include this plugin for Babel.
$ npm install babel babel-core babel-plugin-object-assign
Note: you need to specify
babel-core as a dependency for your project (not just
babel). This is also true if you are using a wrapper like
$ babel --plugins object-assign script.js
var b =;
The MIT License (MIT)
Copyright (c) 2015 Jed Watson
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.