# is-array-buffer

> Is this value a JS ArrayBuffer?

Latest version **3.0.5** (published 2024-12-16) · MIT license · 0 weekly downloads

> **Better alternative:** Use v instanceof ArrayBuffer, or if cross-realm, use Object.prototype.toString.call(v) === "[object ArrayBuffer]" — Consider using a lighter alternative

## Install

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

## Health

**Score 50/100 (C)** — status: stable.

Positive: has types; esm support; no vulnerabilities; high quality score.

Warnings: low downloads.

Negative: stale.

## Facts

| | |
|---|---|
| Version | 3.0.5 |
| Published | 2024-12-16 |
| First published | 2015-11-11 |
| Weekly downloads | 0 |
| License | MIT |
| TypeScript types | bundled |
| Module format | ESM + CommonJS |
| Node | >= 0.4 |
| Dependencies | 3 |
| Unpacked size | 15.7 KB |
| Known vulnerabilities | 0 |
| Install scripts | no |
| GitHub stars | 13 |
| Author | Jordan Harband |
| Maintainers | ljharb, chenfengyuan |
| Keywords | javascript, ecmascript, is, arraybuffer, array, buffer |

## Links

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

## Dependencies (3)

- [call-bind](https://npm.io/package/call-bind.md) ^1.0.8
- [call-bound](https://npm.io/package/call-bound.md) ^1.0.3
- [get-intrinsic](https://npm.io/package/get-intrinsic.md) ^1.2.6

## Alternatives

- [memory-cache](https://npm.io/package/memory-cache.md) — 795.0K weekly downloads
- [@httptoolkit/proxy-agent](https://npm.io/package/@httptoolkit/proxy-agent.md) — 11.2K weekly downloads
- [express-cache-controller](https://npm.io/package/express-cache-controller.md) — 5.3K weekly downloads
- [http-cache-middleware](https://npm.io/package/http-cache-middleware.md) — 4.5K weekly downloads
- [cache2](https://npm.io/package/cache2.md) — 1.5K weekly downloads

## Recent versions

- 3.0.5 (latest) — 2024-12-16
- 3.0.4 — 2024-02-03
- 3.0.3 — 2024-02-03
- 3.0.2 — 2023-03-02
- 3.0.1 — 2023-01-05
- 3.0.0 — 2023-01-04
- 2.0.0 — 2021-02-12
- 1.0.1 — 2018-04-01
- 1.0.0 — 2017-07-26
- 0.1.0 — 2015-11-28
- 0.0.1 — 2015-11-11

## README

# is-array-buffer <sup>[![Version Badge][npm-version-svg]][package-url]</sup>

[![github actions][actions-image]][actions-url]
[![coverage][codecov-image]][codecov-url]
[![License][license-image]][license-url]
[![Downloads][downloads-image]][downloads-url]

[![npm badge][npm-badge-png]][package-url]

Is this value a JS ArrayBuffer? This module works cross-realm/iframe, does not depend on `instanceof` or mutable properties, and despite ES6 Symbol.toStringTag.

## Example

```js
var assert = require('assert');
var isArrayBuffer = require('is-array-buffer');

assert(!isArrayBuffer(function () {}));
assert(!isArrayBuffer(null));
assert(!isArrayBuffer(function* () { yield 42; return Infinity; });
assert(!isArrayBuffer(Symbol('foo')));
assert(!isArrayBuffer(1n));
assert(!isArrayBuffer(Object(1n)));

assert(!isArrayBuffer(new Set()));
assert(!isArrayBuffer(new WeakSet()));
assert(!isArrayBuffer(new Map()));
assert(!isArrayBuffer(new WeakMap()));
assert(!isArrayBuffer(new WeakRef({})));
assert(!isArrayBuffer(new FinalizationRegistry(() => {})));
assert(!isArrayBuffer(new SharedArrayBuffer()));

assert(isArrayBuffer(new ArrayBuffer()));

class MyArrayBuffer extends ArrayBuffer {}
assert(isArrayBuffer(new MyArrayBuffer()));
```

## Tests
Simply clone the repo, `npm install`, and run `npm test`

[package-url]: https://npmjs.org/package/is-array-buffer
[npm-version-svg]: https://versionbadg.es/inspect-js/is-array-buffer.svg
[deps-svg]: https://david-dm.org/inspect-js/is-array-buffer.svg
[deps-url]: https://david-dm.org/inspect-js/is-array-buffer
[dev-deps-svg]: https://david-dm.org/inspect-js/is-array-buffer/dev-status.svg
[dev-deps-url]: https://david-dm.org/inspect-js/is-array-buffer#info=devDependencies
[npm-badge-png]: https://nodei.co/npm/is-array-buffer.png?downloads=true&stars=true
[license-image]: https://img.shields.io/npm/l/is-array-buffer.svg
[license-url]: LICENSE
[downloads-image]: https://img.shields.io/npm/dm/is-array-buffer.svg
[downloads-url]: https://npm-stat.com/charts.html?package=is-array-buffer
[codecov-image]: https://codecov.io/gh/inspect-js/is-array-buffer/branch/main/graphs/badge.svg
[codecov-url]: https://app.codecov.io/gh/inspect-js/is-array-buffer/
[actions-image]: https://img.shields.io/endpoint?url=https://github-actions-badge-u3jn4tfpocch.runkit.sh/inspect-js/is-array-buffer
[actions-url]: https://github.com/inspect-js/is-array-buffer/actions

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