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- #object-is <sup>[![Version Badge][2]][1]</sup>
-
- [![Build Status][3]][4]
- [![dependency status][5]][6]
- [![dev dependency status][7]][8]
- [![License][license-image]][license-url]
- [![Downloads][downloads-image]][downloads-url]
-
- [![npm badge][11]][1]
-
- ES2015-compliant shim for Object.is - differentiates between -0 and +0, and can compare to NaN.
-
- Essentially, Object.is returns the same value as === - but true for NaN, and false for -0 and +0.
-
- ## Example
-
- ```js
- Object.is = require('object-is');
- var assert = require('assert');
-
- 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'));
-
- var arr = [1, 2];
- assert.ok(Object.is(arr, arr));
- assert.notOk(Object.is(arr, [1, 2]));
-
- assert.ok(Object.is(0, 0));
- assert.ok(Object.is(-0, -0));
- assert.notOk(Object.is(0, -0));
-
- assert.ok(Object.is(NaN, NaN));
- assert.ok(Object.is(Infinity, Infinity));
- assert.ok(Object.is(-Infinity, -Infinity));
- ```
-
- ## Tests
- Simply clone the repo, `npm install`, and run `npm test`
-
- [1]: https://npmjs.org/package/object-is
- [2]: http://versionbadg.es/es-shims/object-is.svg
- [3]: https://travis-ci.org/es-shims/object-is.svg
- [4]: https://travis-ci.org/es-shims/object-is
- [5]: https://david-dm.org/es-shims/object-is.svg
- [6]: https://david-dm.org/es-shims/object-is
- [7]: https://david-dm.org/es-shims/object-is/dev-status.svg
- [8]: https://david-dm.org/es-shims/object-is#info=devDependencies
- [11]: https://nodei.co/npm/object-is.png?downloads=true&stars=true
- [license-image]: http://img.shields.io/npm/l/object-is.svg
- [license-url]: LICENSE
- [downloads-image]: http://img.shields.io/npm/dm/object-is.svg
- [downloads-url]: http://npm-stat.com/charts.html?package=object-is
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