| # object-assign [](https://travis-ci.org/sindresorhus/object-assign) |
| |
| > ES2015 [`Object.assign()`](http://www.2ality.com/2014/01/object-assign.html) [ponyfill](https://ponyfill.com) |
| |
| |
| ## Use the built-in |
| |
| Node.js 4 and up, as well as every evergreen browser (Chrome, Edge, Firefox, Opera, Safari), |
| support `Object.assign()` :tada:. If you target only those environments, then by all |
| means, use `Object.assign()` instead of this package. |
| |
| |
| ## Install |
| |
| ``` |
| $ npm install --save object-assign |
| ``` |
| |
| |
| ## Usage |
| |
| ```js |
| const objectAssign = require('object-assign'); |
| |
| objectAssign({foo: 0}, {bar: 1}); |
| //=> {foo: 0, bar: 1} |
| |
| // multiple sources |
| objectAssign({foo: 0}, {bar: 1}, {baz: 2}); |
| //=> {foo: 0, bar: 1, baz: 2} |
| |
| // overwrites equal keys |
| objectAssign({foo: 0}, {foo: 1}, {foo: 2}); |
| //=> {foo: 2} |
| |
| // ignores null and undefined sources |
| objectAssign({foo: 0}, null, {bar: 1}, undefined); |
| //=> {foo: 0, bar: 1} |
| ``` |
| |
| |
| ## API |
| |
| ### objectAssign(target, [source, ...]) |
| |
| Assigns enumerable own properties of `source` objects to the `target` object and returns the `target` object. Additional `source` objects will overwrite previous ones. |
| |
| |
| ## Resources |
| |
| - [ES2015 spec - Object.assign](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-object.assign) |
| |
| |
| ## Related |
| |
| - [deep-assign](https://github.com/sindresorhus/deep-assign) - Recursive `Object.assign()` |
| |
| |
| ## License |
| |
| MIT © [Sindre Sorhus](https://sindresorhus.com) |
