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

> array-includes@3.1.9 is a CommonJS package. CommonJS — require() works on every Node.js version we test.

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.

array-includes ships CommonJS only. require("array-includes") 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 "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.

## What to do

1. require("array-includes") 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 arrayIncludes from "array-includes"; then destructure. Named imports only work when Node.js can statically detect the exports.
3. TypeScript: no types are available for array-includes; declare the module yourself if you need them.

## Facts

- 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

## Runtime test results for array-includes@3.1.9

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

| Runtime | require("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 1.4.0 | works | works |

## How to import array-includes

ES modules:

```js
import arrayIncludes from "array-includes";
```

CommonJS:

```js
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).

| Versions | Format | First published |
|---|---|---|
| 1.0.0 – 3.1.9 | CommonJS | Jan 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 on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >= 0.4. 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 1.4.0 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

- [array-includes on npm](https://www.npmjs.com/package/array-includes)
- [Source repository](https://github.com/es-shims/array-includes)
- [HTML version](https://canirequire.com/package/array-includes/)
- [JSON version](https://canirequire.com/package/array-includes.json)

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