# Is gulp-clean-css ESM-only? Can you require() it?

> gulp-clean-css@4.3.0 is a CommonJS package. CommonJS — require() works on every Node.js version we test.

Minify css with clean-css.

Last verified Sep 9, 2026 against gulp-clean-css@4.3.0.

gulp-clean-css ships CommonJS only. require("gulp-clean-css") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. import "gulp-clean-css" 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("gulp-clean-css") 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 gulpCleanCss from "gulp-clean-css"; then destructure. Named imports only work when Node.js can statically detect the exports.
3. TypeScript: npm install -D @types/gulp-clean-css

## Facts

- Latest: 4.3.0 (Mar 15, 2020)
- Module format: CommonJS
- Last CommonJS version: 4.3.0
- TypeScript types: @types/gulp-clean-css
- Node engines: not declared
- Weekly downloads: 196K
- License: MIT

## Runtime test results for gulp-clean-css@4.3.0

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

| Runtime | require("gulp-clean-css") | import "gulp-clean-css" |
|---|---|---|
| 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 gulp-clean-css

ES modules:

```js
import gulpCleanCss from "gulp-clean-css";
```

CommonJS:

```js
const gulpCleanCss = require("gulp-clean-css");
```

## Module format by version

Derived from the type, main and exports fields of every stable release on npm (56 versions; the newest 56 shown).

| Versions | Format | First published |
|---|---|---|
| 1.0.0 – 4.3.0 | CommonJS | Apr 29, 2014 |

## Frequently asked

**Is gulp-clean-css ESM-only?**

gulp-clean-css@4.3.0 is a CommonJS package. gulp-clean-css ships CommonJS only. require("gulp-clean-css") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. import "gulp-clean-css" 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 gulp-clean-css with ES module syntax?**

Yes. import gulpCleanCss from "gulp-clean-css" 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 gulp-clean-css work in Bun?**

Yes. import "gulp-clean-css" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

**Does gulp-clean-css ship TypeScript types?**

Not bundled. Install the community types with "npm install -D @types/gulp-clean-css".

## Links

- [gulp-clean-css on npm](https://www.npmjs.com/package/gulp-clean-css)
- [Source repository](https://github.com/scniro/gulp-clean-css)
- [HTML version](https://canirequire.com/package/gulp-clean-css/)
- [JSON version](https://canirequire.com/package/gulp-clean-css.json)

---

For scripts and AI agents: any package is at https://canirequire.com/package/<name>/index.md (Markdown) or https://canirequire.com/package/<name>.json (JSON); the site index is https://canirequire.com/llms.txt. Fetch the URL directly; no search needed.