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