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  
21  This 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  
23  It's future-proof and works in node too!
24  
25  ## install
26  
27  ```bash
28  npm install is-buffer
29  ```
30  
31  ## usage
32  
33  ```js
34  var isBuffer = require('is-buffer')
35  
36  isBuffer(new Buffer(4)) // true
37  
38  isBuffer(undefined) // false
39  isBuffer(null) // false
40  isBuffer('') // false
41  isBuffer(true) // false
42  isBuffer(false) // false
43  isBuffer(0) // false
44  isBuffer(1) // false
45  isBuffer(1.0) // false
46  isBuffer('string') // false
47  isBuffer({}) // false
48  isBuffer(function foo () {}) // false
49  ```
50  
51  ## license
52  
53  MIT. Copyright (C) [Feross Aboukhadijeh](http://feross.org).