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codeql-action/node_modules/object-is/README.md
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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. | |
This package implements the [es-shim API](https://github.com/es-shims/api) interface. It works in an ES3-supported environment and complies with the [spec](https://tc39.es/ecma262). | |
## 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 | |