# Is cz-conventional-changelog ESM-only? Can you require() it?

> cz-conventional-changelog@3.3.0 is a CommonJS package. CommonJS — require() works on every Node.js version we test.

Commitizen adapter following the conventional-changelog format.

Last verified Sep 9, 2026 against cz-conventional-changelog@3.3.0.

cz-conventional-changelog ships CommonJS only. require("cz-conventional-changelog") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >= 10. import "cz-conventional-changelog" 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("cz-conventional-changelog") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >= 10.
2. From ES modules use the default import: import czConventionalChangelog from "cz-conventional-changelog"; then destructure. Named imports only work when Node.js can statically detect the exports.
3. TypeScript: no types are available for cz-conventional-changelog; declare the module yourself if you need them.

## Facts

- Latest: 3.3.0 (Aug 26, 2020)
- Module format: CommonJS
- Last CommonJS version: 3.3.0
- TypeScript types: none
- Node engines: >= 10
- Weekly downloads: 1.2M
- License: MIT

## Runtime test results for cz-conventional-changelog@3.3.0

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

| Runtime | require("cz-conventional-changelog") | import "cz-conventional-changelog" |
|---|---|---|
| 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 cz-conventional-changelog

ES modules:

```js
import czConventionalChangelog from "cz-conventional-changelog";
```

CommonJS:

```js
const czConventionalChangelog = require("cz-conventional-changelog");
```

## Module format by version

Derived from the type, main and exports fields of every stable release on npm (22 versions; the newest 22 shown).

| Versions | Format | First published |
|---|---|---|
| 1.0.0 – 3.3.0 | CommonJS | Apr 20, 2015 |

## Frequently asked

**Is cz-conventional-changelog ESM-only?**

cz-conventional-changelog@3.3.0 is a CommonJS package. cz-conventional-changelog ships CommonJS only. require("cz-conventional-changelog") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >= 10. import "cz-conventional-changelog" 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 cz-conventional-changelog with ES module syntax?**

Yes. import czConventionalChangelog from "cz-conventional-changelog" 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 cz-conventional-changelog work in Bun?**

Yes. import "cz-conventional-changelog" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

**Does cz-conventional-changelog ship TypeScript types?**

No. cz-conventional-changelog ships no type declarations and there is no @types package for it.

## Links

- [cz-conventional-changelog on npm](https://www.npmjs.com/package/cz-conventional-changelog)
- [Source repository](https://github.com/commitizen/cz-conventional-changelog)
- [HTML version](https://canirequire.com/package/cz-conventional-changelog/)
- [JSON version](https://canirequire.com/package/cz-conventional-changelog.json)

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