# is-typed-array > Is this value a JS Typed Array? This module works cross-realm/iframe, does not depend on `instanceof` or mutable properties, and despite ES6 Symbol.toStringTag. Latest version **1.1.15** (published 2024-12-18) · MIT license · 0 weekly downloads ## Install ```sh npm install is-typed-array pnpm add is-typed-array yarn add is-typed-array bun add is-typed-array ``` ## Health **Score 45/100 (D)** — status: stable. Positive: has types; no vulnerabilities; high quality score. Warnings: low downloads; no esm support. Negative: stale. ## Facts | | | |---|---| | Version | 1.1.15 | | Published | 2024-12-18 | | First published | 2015-05-07 | | Weekly downloads | 0 | | License | MIT | | TypeScript types | bundled | | Module format | CommonJS | | Node | >= 0.4 | | Dependencies | 1 | | Unpacked size | 21.4 KB | | Known vulnerabilities | 0 | | Install scripts | no | | GitHub stars | 12 | | Author | Jordan Harband | | Maintainers | ljharb, alexandergugel | | Keywords | array, TypedArray, typed array, is, typed, Int8Array, Uint8Array, Uint8ClampedArray, Int16Array, Uint16Array, Int32Array, Uint32Array, Float32Array, Float64Array, ES6, toStringTag, Symbol.toStringTag, @@toStringTag | ## Links - npm: https://www.npmjs.com/package/is-typed-array - Repository: https://github.com/inspect-js/is-typed-array - Homepage: https://github.com/inspect-js/is-typed-array#readme - Issues: https://github.com/inspect-js/is-typed-array/issues - Funding: https://github.com/sponsors/ljharb - npm.io page: https://npm.io/package/is-typed-array ## Dependencies (1) - [which-typed-array](https://npm.io/package/which-typed-array.md) ^1.1.16 ## 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 - 1.1.15 (latest) — 2024-12-18 - 1.1.14 — 2024-12-17 - 1.1.13 — 2024-02-02 - 1.1.12 — 2023-07-18 - 1.1.11 — 2023-07-17 - 1.1.10 — 2022-11-02 - 1.1.9 — 2022-05-14 - 1.1.8 — 2021-08-31 - 1.1.7 — 2021-08-07 - 1.1.6 — 2021-08-05 - 1.1.5 — 2021-02-14 - 1.1.4 — 2020-12-05 - 1.1.3 — 2020-01-24 - 1.1.2 — 2020-01-21 - 1.1.1 — 2020-01-19 - … 6 more at https://npm.io/package/is-typed-array/versions ## README # is-typed-array [![Version Badge][npm-version-svg]][package-url] [![github actions][actions-image]][actions-url] [![coverage][codecov-image]][codecov-url] [![dependency status][5]][6] [![dev dependency status][7]][8] [![License][license-image]][license-url] [![Downloads][downloads-image]][downloads-url] [![npm badge][npm-badge-png]][package-url] Is this value a JS Typed Array? This module works cross-realm/iframe, does not depend on `instanceof` or mutable properties, and despite ES6 Symbol.toStringTag. ## Example ```js var isTypedArray = require('is-typed-array'); var assert = require('assert'); assert.equal(false, isTypedArray(undefined)); assert.equal(false, isTypedArray(null)); assert.equal(false, isTypedArray(false)); assert.equal(false, isTypedArray(true)); assert.equal(false, isTypedArray([])); assert.equal(false, isTypedArray({})); assert.equal(false, isTypedArray(/a/g)); assert.equal(false, isTypedArray(new RegExp('a', 'g'))); assert.equal(false, isTypedArray(new Date())); assert.equal(false, isTypedArray(42)); assert.equal(false, isTypedArray(NaN)); assert.equal(false, isTypedArray(Infinity)); assert.equal(false, isTypedArray(new Number(42))); assert.equal(false, isTypedArray('foo')); assert.equal(false, isTypedArray(Object('foo'))); assert.equal(false, isTypedArray(function () {})); assert.equal(false, isTypedArray(function* () {})); assert.equal(false, isTypedArray(x => x * x)); assert.equal(false, isTypedArray([])); assert.ok(isTypedArray(new Int8Array())); assert.ok(isTypedArray(new Uint8Array())); assert.ok(isTypedArray(new Uint8ClampedArray())); assert.ok(isTypedArray(new Int16Array())); assert.ok(isTypedArray(new Uint16Array())); assert.ok(isTypedArray(new Int32Array())); assert.ok(isTypedArray(new Uint32Array())); assert.ok(isTypedArray(new Float32Array())); assert.ok(isTypedArray(new Float64Array())); assert.ok(isTypedArray(new BigInt64Array())); assert.ok(isTypedArray(new BigUint64Array())); ``` ## Tests Simply clone the repo, `npm install`, and run `npm test` [package-url]: https://npmjs.org/package/is-typed-array [npm-version-svg]: https://versionbadg.es/inspect-js/is-typed-array.svg [deps-svg]: https://david-dm.org/inspect-js/is-typed-array.svg [deps-url]: https://david-dm.org/inspect-js/is-typed-array [dev-deps-svg]: https://david-dm.org/inspect-js/is-typed-array/dev-status.svg [dev-deps-url]: https://david-dm.org/inspect-js/is-typed-array#info=devDependencies [npm-badge-png]: https://nodei.co/npm/is-typed-array.png?downloads=true&stars=true [license-image]: https://img.shields.io/npm/l/is-typed-array.svg [license-url]: LICENSE [downloads-image]: https://img.shields.io/npm/dm/is-typed-array.svg [downloads-url]: https://npm-stat.com/charts.html?package=is-typed-array [codecov-image]: https://codecov.io/gh/inspect-js/is-typed-array/branch/main/graphs/badge.svg [codecov-url]: https://app.codecov.io/gh/inspect-js/is-typed-array/ [actions-image]: https://img.shields.io/endpoint?url=https://github-actions-badge-u3jn4tfpocch.runkit.sh/inspect-js/is-typed-array [actions-url]: https://github.com/inspect-js/is-typed-array/actions --- _Source: https://npm.io/package/is-typed-array · Machine-readable twin of the npm.io package page. 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