# is-buffer

> Determine if an object is a Buffer

Latest version **2.0.5** (published 2020-11-03) · MIT license · 0 weekly downloads

## Install

```sh
npm install is-buffer
pnpm add is-buffer
yarn add is-buffer
bun add is-buffer
```

## Health

**Score 23/100 (F)** — status: abandoned.

Positive: has types package; no vulnerabilities; high quality score.

Warnings: low downloads; no esm support.

Negative: abandoned; low maintenance score.

## Facts

| | |
|---|---|
| Version | 2.0.5 |
| Published | 2020-11-03 |
| First published | 2014-10-31 |
| Weekly downloads | 0 |
| License | MIT |
| TypeScript types | separate (@types/is-buffer) |
| Module format | CommonJS |
| Node | >=4 |
| Dependencies | 0 |
| Unpacked size | 4.5 KB |
| Known vulnerabilities | 0 |
| Install scripts | no |
| GitHub stars | 94 |
| Author | Feross Aboukhadijeh |
| Maintainers | feross |
| Keywords | arraybuffer, browser, browser buffer, browserify, buffer, buffers, core buffer, dataview, float32array, float64array, int16array, int32array, type, typed array, uint32array |

## Links

- npm: https://www.npmjs.com/package/is-buffer
- Repository: https://github.com/feross/is-buffer
- Homepage: https://github.com/feross/is-buffer#readme
- Issues: https://github.com/feross/is-buffer/issues
- Funding: https://github.com/sponsors/feross
- npm.io page: https://npm.io/package/is-buffer

## Alternatives

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- [browserify](https://npm.io/package/browserify.md) — 1.7M weekly downloads
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## Recent versions

- 2.0.5 (latest) — 2020-11-03
- 2.0.4 — 2019-10-01
- 2.0.3 — 2018-06-09
- 2.0.2 — 2018-03-17
- 2.0.1 — 2018-03-17
- 2.0.0 — 2018-01-29
- 1.1.6 — 2017-10-25
- 1.1.5 — 2017-03-11
- 1.1.4 — 2016-08-03
- 1.1.3 — 2016-03-07
- 1.1.2 — 2016-01-29
- 1.1.1 — 2016-01-03
- 1.1.0 — 2015-09-17
- 1.0.2 — 2015-05-05
- 1.0.1 — 2014-10-31
- … 1 more at https://npm.io/package/is-buffer/versions

## README

# 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).

---
_Source: https://npm.io/package/is-buffer · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._