# Is @babel/plugin-proposal-class-properties ESM-only? Can you require() it?

> @babel/plugin-proposal-class-properties@7.18.6 is a CommonJS package. CommonJS — require() works on every Node.js version we test.

This plugin transforms static class properties as well as properties declared with the property initializer syntax

Last verified Sep 9, 2026 against @babel/plugin-proposal-class-properties@7.18.6.

@babel/plugin-proposal-class-properties ships CommonJS only. require("@babel/plugin-proposal-class-properties") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=6.9.0. import "@babel/plugin-proposal-class-properties" 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.

**Deprecated:** This proposal has been merged to the ECMAScript standard and thus this plugin is no longer maintained. Please use @babel/plugin-transform-class-properties instead.

## What to do

1. require("@babel/plugin-proposal-class-properties") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=6.9.0.
2. From ES modules use the default import: import pluginProposalClassProperties from "@babel/plugin-proposal-class-properties"; then destructure. Named imports only work when Node.js can statically detect the exports.
3. TypeScript: no types are available for @babel/plugin-proposal-class-properties; declare the module yourself if you need them.
4. This package is deprecated: This proposal has been merged to the ECMAScript standard and thus this plugin is no longer maintained. Please use @babel/plugin-transform-class-properties instead.

## Facts

- Latest: 7.18.6 (Jun 27, 2022)
- Module format: CommonJS
- Last CommonJS version: 7.18.6
- TypeScript types: none
- Node engines: >=6.9.0
- Weekly downloads: 10.8M
- License: MIT

## Runtime test results for @babel/plugin-proposal-class-properties@7.18.6

Installed and executed on Sep 9, 2026 with require("@babel/plugin-proposal-class-properties") from a CommonJS file and import "@babel/plugin-proposal-class-properties" from an ES module.

| Runtime | require("@babel/plugin-proposal-class-properties") | import "@babel/plugin-proposal-class-properties" |
|---|---|---|
| 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 @babel/plugin-proposal-class-properties

ES modules:

```js
import pluginProposalClassProperties from "@babel/plugin-proposal-class-properties";
```

CommonJS:

```js
const pluginProposalClassProperties = require("@babel/plugin-proposal-class-properties");
```

## Module format by version

Derived from the type, main and exports fields of every stable release on npm (27 versions; the newest 27 shown).

| Versions | Format | First published |
|---|---|---|
| 7.0.0 – 7.18.6 | CommonJS | Aug 27, 2018 |

## Frequently asked

**Is @babel/plugin-proposal-class-properties ESM-only?**

@babel/plugin-proposal-class-properties@7.18.6 is a CommonJS package. @babel/plugin-proposal-class-properties ships CommonJS only. require("@babel/plugin-proposal-class-properties") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=6.9.0. import "@babel/plugin-proposal-class-properties" 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 @babel/plugin-proposal-class-properties with ES module syntax?**

Yes. import pluginProposalClassProperties from "@babel/plugin-proposal-class-properties" 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 @babel/plugin-proposal-class-properties work in Bun?**

Yes. import "@babel/plugin-proposal-class-properties" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

**Does @babel/plugin-proposal-class-properties ship TypeScript types?**

No. @babel/plugin-proposal-class-properties ships no type declarations and there is no @types package for it.

## Links

- [@babel/plugin-proposal-class-properties on npm](https://www.npmjs.com/package/@babel/plugin-proposal-class-properties)
- [Source repository](https://github.com/babel/babel)
- [HTML version](https://canirequire.com/package/@babel/plugin-proposal-class-properties/)
- [JSON version](https://canirequire.com/package/@babel/plugin-proposal-class-properties.json)

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