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

css loader module for webpack

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

CommonJS CommonJS — require() works on every Node.js version

css-loader ships CommonJS only. require("css-loader") works everywhere. 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.

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

Does css-loader@7.1.5 actually load? Runtime test results

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

Runtimerequire("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✓ works✓ works

How to import css-loader

ES modules (import)

import cssLoader from "css-loader";

Named imports from a CommonJS package only work when Node.js can statically detect them. If a named import fails, use the default import and destructure.

CommonJS (require)

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).

VersionsFormatFirst published
3.3.0 – 7.1.5CommonJSDec 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 everywhere. 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 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

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