# Is react-addons-test-utils ESM-only? Can you require() it?

> react-addons-test-utils@15.6.2 is a CommonJS package. CommonJS — require() works on every Node.js version we test.

This package provides the React TestUtils add-on.

Last verified Sep 9, 2026 against react-addons-test-utils@15.6.2.

react-addons-test-utils ships CommonJS only. require("react-addons-test-utils") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. import "react-addons-test-utils" 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("react-addons-test-utils") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun.
2. From ES modules use the default import: import reactAddonsTestUtils from "react-addons-test-utils"; then destructure. Named imports only work when Node.js can statically detect the exports.
3. TypeScript: npm install -D @types/react-addons-test-utils

## Facts

- Latest: 15.6.2 (Sep 26, 2017)
- Module format: CommonJS
- Last CommonJS version: 15.6.2
- TypeScript types: @types/react-addons-test-utils
- Node engines: not declared
- Weekly downloads: 152K
- License: MIT

## Runtime test results for react-addons-test-utils@15.6.2

Installed and executed on Sep 9, 2026 with require("react-addons-test-utils") from a CommonJS file and import "react-addons-test-utils" from an ES module.

| Runtime | require("react-addons-test-utils") | import "react-addons-test-utils" |
|---|---|---|
| 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 react-addons-test-utils

ES modules:

```js
import reactAddonsTestUtils from "react-addons-test-utils";
```

CommonJS:

```js
const reactAddonsTestUtils = require("react-addons-test-utils");
```

## Module format by version

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

| Versions | Format | First published |
|---|---|---|
| 0.14.0 – 15.6.2 | CommonJS | Oct 7, 2015 |

## Frequently asked

**Is react-addons-test-utils ESM-only?**

react-addons-test-utils@15.6.2 is a CommonJS package. react-addons-test-utils ships CommonJS only. require("react-addons-test-utils") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. import "react-addons-test-utils" 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 react-addons-test-utils with ES module syntax?**

Yes. import reactAddonsTestUtils from "react-addons-test-utils" 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 react-addons-test-utils work in Bun?**

Yes. import "react-addons-test-utils" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

**Does react-addons-test-utils ship TypeScript types?**

Not bundled. Install the community types with "npm install -D @types/react-addons-test-utils".

## Links

- [react-addons-test-utils on npm](https://www.npmjs.com/package/react-addons-test-utils)
- [Source repository](https://github.com/facebook/react)
- [HTML version](https://canirequire.com/package/react-addons-test-utils/)
- [JSON version](https://canirequire.com/package/react-addons-test-utils.json)

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