# Is react-transition-group ESM-only? Can you require() it?

> react-transition-group@4.4.5 is a CommonJS package. CommonJS — require() works on every Node.js version we test.

A react component toolset for managing animations

Last verified Sep 9, 2026 against react-transition-group@4.4.5.

react-transition-group ships CommonJS only. require("react-transition-group") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. import "react-transition-group" 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.

It also declares a "module" field, so bundlers such as webpack, Vite and esbuild pick up an ESM build for tree-shaking.

## What to do

1. require("react-transition-group") 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 reactTransitionGroup from "react-transition-group"; then destructure. Named imports only work when Node.js can statically detect the exports.
3. TypeScript: npm install -D @types/react-transition-group

## Facts

- Latest: 4.4.5 (Aug 1, 2022)
- Module format: CommonJS
- Last CommonJS version: 4.4.5
- TypeScript types: @types/react-transition-group
- Node engines: not declared
- Weekly downloads: 35.5M
- License: BSD-3-Clause

## Runtime test results for react-transition-group@4.4.5

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

| Runtime | require("react-transition-group") | import "react-transition-group" |
|---|---|---|
| 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-transition-group

ES modules:

```js
import reactTransitionGroup from "react-transition-group";
```

CommonJS:

```js
const reactTransitionGroup = require("react-transition-group");
```

## Module format by version

Derived from the type, main and exports fields of every stable release on npm (41 versions; the newest 41 shown).

| Versions | Format | First published |
|---|---|---|
| 1.0.0 – 4.4.5 | CommonJS | Dec 9, 2016 |

## Frequently asked

**Is react-transition-group ESM-only?**

react-transition-group@4.4.5 is a CommonJS package. react-transition-group ships CommonJS only. require("react-transition-group") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. import "react-transition-group" 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-transition-group with ES module syntax?**

Yes. import reactTransitionGroup from "react-transition-group" 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-transition-group work in Bun?**

Yes. import "react-transition-group" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

**Does react-transition-group ship TypeScript types?**

Not bundled. Install the community types with "npm install -D @types/react-transition-group".

## Links

- [react-transition-group on npm](https://www.npmjs.com/package/react-transition-group)
- [Source repository](https://github.com/reactjs/react-transition-group)
- [HTML version](https://canirequire.com/package/react-transition-group/)
- [JSON version](https://canirequire.com/package/react-transition-group.json)

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