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- #object-is <sup>[![Version Badge][2]][1]</sup>
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- [![Build Status][3]][4] [![dependency status][5]][6] [![dev dependency status][7]][8]
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- [![npm badge][11]][1]
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- [![browser support][9]][10]
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- ES6-compliant shim for Object.is - differentiates between -0 and +0, and can compare to NaN.
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- Essentially, Object.is returns the same value as === - but true for NaN, and false for -0 and +0.
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- ## Example
-
- ```js
- Object.is = require('object-is');
- var assert = require('assert');
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- assert.ok(Object.is());
- assert.ok(Object.is(undefined));
- assert.ok(Object.is(undefined, undefined));
- assert.ok(Object.is(null, null));
- assert.ok(Object.is(true, true));
- assert.ok(Object.is(false, false));
- assert.ok(Object.is('foo', 'foo'));
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- var arr = [1, 2];
- assert.ok(Object.is(arr, arr));
- assert.notOk(Object.is(arr, [1, 2]));
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- assert.ok(Object.is(0, 0));
- assert.ok(Object.is(-0, -0));
- assert.notOk(Object.is(0, -0));
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- assert.ok(Object.is(NaN, NaN));
- assert.ok(Object.is(Infinity, Infinity));
- assert.ok(Object.is(-Infinity, -Infinity));
- ```
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- ## Tests
- Simply clone the repo, `npm install`, and run `npm test`
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- [1]: https://npmjs.org/package/object-is
- [2]: http://vb.teelaun.ch/ljharb/object-is.svg
- [3]: https://travis-ci.org/ljharb/object-is.svg
- [4]: https://travis-ci.org/ljharb/object-is
- [5]: https://david-dm.org/ljharb/object-is.svg
- [6]: https://david-dm.org/ljharb/object-is
- [7]: https://david-dm.org/ljharb/object-is/dev-status.svg
- [8]: https://david-dm.org/ljharb/object-is#info=devDependencies
- [9]: https://ci.testling.com/ljharb/object-is.png
- [10]: https://ci.testling.com/ljharb/object-is
- [11]: https://nodei.co/npm/object-is.png?downloads=true&stars=true
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