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

> css-loader@7.1.5 is a CommonJS package. CommonJS — require() works on every Node.js version we test.

css loader module for webpack

Last verified Sep 9, 2026 against css-loader@7.1.5.

css-loader ships CommonJS only. require("css-loader") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >= 18.12.0. import "css-loader" 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("css-loader") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >= 18.12.0.
2. From ES modules use the default import: import cssLoader from "css-loader"; then destructure. Named imports only work when Node.js can statically detect the exports.
3. TypeScript: no types are available for css-loader; declare the module yourself if you need them.

## Facts

- Latest: 7.1.5 (Aug 28, 2026)
- Module format: CommonJS
- Last CommonJS version: 7.1.5
- TypeScript types: none
- Node engines: >= 18.12.0
- Weekly downloads: 25.7M
- License: MIT

## Runtime test results for css-loader@7.1.5

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

| Runtime | require("css-loader") | import "css-loader" |
|---|---|---|
| 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 css-loader

ES modules:

```js
import cssLoader from "css-loader";
```

CommonJS:

```js
const cssLoader = require("css-loader");
```

## Module format by version

Derived from the type, main and exports fields of every stable release on npm (155 versions; the newest 60 shown).

| Versions | Format | First published |
|---|---|---|
| 3.3.0 – 7.1.5 | CommonJS | Dec 9, 2019 |

## Frequently asked

**Is css-loader ESM-only?**

css-loader@7.1.5 is a CommonJS package. css-loader ships CommonJS only. require("css-loader") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >= 18.12.0. import "css-loader" 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 css-loader with ES module syntax?**

Yes. import cssLoader from "css-loader" 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 css-loader work in Bun?**

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

**Does css-loader ship TypeScript types?**

No. css-loader ships no type declarations and there is no @types package for it.

## Links

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

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