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# is-buffer [![travis][travis-image]][travis-url] [![npm][npm-image]][npm-url] [![downloads][downloads-image]][downloads-url] [![javascript style guide][standard-image]][standard-url] [travis-image]: https://img.shields.io/travis/feross/is-buffer/master.svg [travis-url]: https://travis-ci.org/feross/is-buffer [npm-image]: https://img.shields.io/npm/v/is-buffer.svg [npm-url]: https://npmjs.org/package/is-buffer [downloads-image]: https://img.shields.io/npm/dm/is-buffer.svg [downloads-url]: https://npmjs.org/package/is-buffer [standard-image]: https://img.shields.io/badge/code_style-standard-brightgreen.svg [standard-url]: https://standardjs.com #### Determine if an object is a [`Buffer`](http://nodejs.org/api/buffer.html) (including the [browserify Buffer](https://github.com/feross/buffer)) [![saucelabs][saucelabs-image]][saucelabs-url] [saucelabs-image]: https://saucelabs.com/browser-matrix/is-buffer.svg [saucelabs-url]: https://saucelabs.com/u/is-buffer ## Why not use `Buffer.isBuffer`? 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/)). It's future-proof and works in node too! ## install ```bash npm install is-buffer ``` ## usage ```js var isBuffer = require('is-buffer') isBuffer(new Buffer(4)) // true isBuffer(Buffer.alloc(4)) //true isBuffer(undefined) // false isBuffer(null) // false isBuffer('') // false isBuffer(true) // false isBuffer(false) // false isBuffer(0) // false isBuffer(1) // false isBuffer(1.0) // false isBuffer('string') // false isBuffer({}) // false isBuffer(function foo () {}) // false ``` ## license MIT. Copyright (C) [Feross Aboukhadijeh](http://feross.org).