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

Which kind of Typed Array is this JavaScript value? Works cross-realm, without `instanceof`, and despite Symbol.toStringTag.

Last verified Sep 9, 2026 against which-typed-array@1.1.22. JSON

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

which-typed-array ships CommonJS only. require("which-typed-array") works everywhere. import "which-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.

Latest
1.1.22 (Jun 5, 2026)
Module format
CommonJS
Last CommonJS version
1.1.22
TypeScript types
Bundled
Node engines
>= 0.4
Weekly downloads
95.5M
License
MIT

Does which-typed-array@1.1.22 actually load? Runtime test results

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

Runtimerequire("which-typed-array")import "which-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✓ works✓ works

How to import which-typed-array

ES modules (import)

import whichTypedArray from "which-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 whichTypedArray = require("which-typed-array");

Module format by version

Derived from the type, main and exports fields of every stable release on npm (25 versions; the newest 25 shown).

VersionsFormatFirst published
1.0.0 – 1.1.22CommonJSOct 5, 2015

Frequently asked

Is which-typed-array ESM-only?

which-typed-array@1.1.22 is a CommonJS package. which-typed-array ships CommonJS only. require("which-typed-array") works everywhere. import "which-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 which-typed-array with ES module syntax?

Yes. import whichTypedArray from "which-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 which-typed-array work in Bun?

Yes. import "which-typed-array" loaded successfully in Bun 1.4 on Sep 9, 2026.

Does which-typed-array ship TypeScript types?

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

Links

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