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README.md
1# is-buffer [![travis][travis-image]][travis-url] [![npm][npm-image]][npm-url] [![downloads][downloads-image]][downloads-url] [![javascript style guide][standard-image]][standard-url] 2 3[travis-image]: https://img.shields.io/travis/feross/is-buffer/master.svg 4[travis-url]: https://travis-ci.org/feross/is-buffer 5[npm-image]: https://img.shields.io/npm/v/is-buffer.svg 6[npm-url]: https://npmjs.org/package/is-buffer 7[downloads-image]: https://img.shields.io/npm/dm/is-buffer.svg 8[downloads-url]: https://npmjs.org/package/is-buffer 9[standard-image]: https://img.shields.io/badge/code_style-standard-brightgreen.svg 10[standard-url]: https://standardjs.com 11 12#### Determine if an object is a [`Buffer`](http://nodejs.org/api/buffer.html) (including the [browserify Buffer](https://github.com/feross/buffer)) 13 14[![saucelabs][saucelabs-image]][saucelabs-url] 15 16[saucelabs-image]: https://saucelabs.com/browser-matrix/is-buffer.svg 17[saucelabs-url]: https://saucelabs.com/u/is-buffer 18 19## Why not use `Buffer.isBuffer`? 20 21This module lets you check if an object is a `Buffer` without using `Buffer.isBuffer` (which includes the whole [buffer](https://github.com/feross/buffer) module in [browserify](http://browserify.org/)). 22 23It's future-proof and works in node too! 24 25## install 26 27```bash 28npm install is-buffer 29``` 30 31[Get supported is-buffer with the Tidelift Subscription](https://tidelift.com/subscription/pkg/npm-is-buffer?utm_source=npm-is-buffer&utm_medium=referral&utm_campaign=readme) 32 33## usage 34 35```js 36var isBuffer = require('is-buffer') 37 38isBuffer(new Buffer(4)) // true 39isBuffer(Buffer.alloc(4)) //true 40 41isBuffer(undefined) // false 42isBuffer(null) // false 43isBuffer('') // false 44isBuffer(true) // false 45isBuffer(false) // false 46isBuffer(0) // false 47isBuffer(1) // false 48isBuffer(1.0) // false 49isBuffer('string') // false 50isBuffer({}) // false 51isBuffer(function foo () {}) // false 52``` 53 54## license 55 56MIT. Copyright (C) [Feross Aboukhadijeh](http://feross.org). 57