# Is css-split-webpack-plugin ESM-only? Can you require() it?

> css-split-webpack-plugin@0.2.6 is a CommonJS package. CommonJS — require() works on every Node.js version we test.

Split your CSS for stupid browsers using [webpack] and [postcss].

Last verified Sep 9, 2026 against css-split-webpack-plugin@0.2.6.

css-split-webpack-plugin ships CommonJS only. require("css-split-webpack-plugin") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. import "css-split-webpack-plugin" 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-split-webpack-plugin") 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 cssSplitWebpackPlugin from "css-split-webpack-plugin"; then destructure. Named imports only work when Node.js can statically detect the exports.
3. TypeScript: no types are available for css-split-webpack-plugin; declare the module yourself if you need them.

## Facts

- Latest: 0.2.6 (Sep 28, 2018)
- Module format: CommonJS
- Last CommonJS version: 0.2.6
- TypeScript types: none
- Node engines: not declared
- Weekly downloads: 4K
- License: CC0-1.0

## Runtime test results for css-split-webpack-plugin@0.2.6

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

| Runtime | require("css-split-webpack-plugin") | import "css-split-webpack-plugin" |
|---|---|---|
| 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-split-webpack-plugin

ES modules:

```js
import cssSplitWebpackPlugin from "css-split-webpack-plugin";
```

CommonJS:

```js
const cssSplitWebpackPlugin = require("css-split-webpack-plugin");
```

## Module format by version

Derived from the type, main and exports fields of every stable release on npm (8 versions; the newest 8 shown).

| Versions | Format | First published |
|---|---|---|
| 0.1.0 – 0.2.6 | CommonJS | Apr 28, 2016 |

## Frequently asked

**Is css-split-webpack-plugin ESM-only?**

css-split-webpack-plugin@0.2.6 is a CommonJS package. css-split-webpack-plugin ships CommonJS only. require("css-split-webpack-plugin") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. import "css-split-webpack-plugin" 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-split-webpack-plugin with ES module syntax?**

Yes. import cssSplitWebpackPlugin from "css-split-webpack-plugin" 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-split-webpack-plugin work in Bun?**

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

**Does css-split-webpack-plugin ship TypeScript types?**

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

## Links

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

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