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Is is-typed-array ESM-only? Can you require() it?

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.

Last verified Sep 9, 2026 against is-typed-array@1.1.15. Markdown · JSON

CommonJS CommonJS — require() works on every Node.js version we test

is-typed-array ships CommonJS only. require("is-typed-array") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >= 0.4. import "is-typed-array" also works because Node.js and Bun can import CommonJS from ES modules, but only the default export is guaranteed; named imports depend on Node's static analysis of the module.

What to do

  1. require("is-typed-array") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >= 0.4.
  2. From ES modules use the default import: import isTypedArray from "is-typed-array"; then destructure. Named imports only work when Node.js can statically detect the exports.
  3. TypeScript: types are bundled; install nothing extra.
Latest
1.1.15 (Dec 18, 2024)
Module format
CommonJS
Last CommonJS version
1.1.15
TypeScript types
Bundled
Node engines
>= 0.4
Weekly downloads
88.0M
License
MIT

Does is-typed-array@1.1.15 actually load? Runtime test results

Installed and executed on Sep 9, 2026 with require("is-typed-array") from a CommonJS file and import "is-typed-array" from an ES module.

Runtimerequire("is-typed-array")import "is-typed-array"
Node.js 18✓ works✓ works
Node.js 20✓ works✓ works
Node.js 22✓ works✓ works
Node.js 24✓ works✓ works
Node.js 26✓ works✓ works
Bun 1.4.0✓ works✓ works

How to import is-typed-array

ES modules (import)

import isTypedArray from "is-typed-array";

Named imports from a CommonJS package only work when Node.js can statically detect them. If a named import fails, use the default import and destructure.

CommonJS (require)

const isTypedArray = require("is-typed-array");

Module format by version

Derived from the type, main and exports fields of every stable release on npm, corrected where a runtime test of that version contradicted them (21 versions; the newest 21 shown).

VersionsFormatFirst published
1.0.0 – 1.1.15CommonJSMay 7, 2015

Frequently asked

Is is-typed-array ESM-only?

is-typed-array@1.1.15 is a CommonJS package. is-typed-array ships CommonJS only. require("is-typed-array") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >= 0.4. import "is-typed-array" also works because Node.js and Bun can import CommonJS from ES modules, but only the default export is guaranteed; named imports depend on Node's static analysis of the module.

Can I import is-typed-array with ES module syntax?

Yes. import isTypedArray from "is-typed-array" works in Node.js and Bun because they support importing CommonJS modules. Named imports work only when Node.js can statically detect the exports.

Does is-typed-array work in Bun?

Yes. import "is-typed-array" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

Does is-typed-array ship TypeScript types?

Yes. is-typed-array bundles its own type declarations; no @types package is needed.

Links

Other commonjs packages

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