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

An ES7/ES2016 spec-compliant `Array.prototype.includes` shim/polyfill/replacement that works as far down as ES3.

Last verified Sep 9, 2026 against array-includes@3.1.9. JSON

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

array-includes ships CommonJS only. require("array-includes") works everywhere. import "array-includes" 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
3.1.9 (Jun 2, 2025)
Module format
CommonJS
Last CommonJS version
3.1.9
TypeScript types
None
Node engines
>= 0.4
Weekly downloads
50.8M
License
MIT

Does array-includes@3.1.9 actually load? Runtime test results

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

Runtimerequire("array-includes")import "array-includes"
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 array-includes

ES modules (import)

import arrayIncludes from "array-includes";

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 arrayIncludes = require("array-includes");

Module format by version

Derived from the type, main and exports fields of every stable release on npm (24 versions; the newest 24 shown).

VersionsFormatFirst published
1.0.0 – 3.1.9CommonJSJan 4, 2015

Frequently asked

Is array-includes ESM-only?

array-includes@3.1.9 is a CommonJS package. array-includes ships CommonJS only. require("array-includes") works everywhere. import "array-includes" 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 array-includes with ES module syntax?

Yes. import arrayIncludes from "array-includes" 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 array-includes work in Bun?

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

Does array-includes ship TypeScript types?

No. array-includes ships no type declarations and there is no @types package for it.

Links

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