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Is postcss-scss ESM-only? Can you require() it?

SCSS parser for PostCSS

Last verified Sep 9, 2026 against postcss-scss@4.0.9. Markdown · JSON

Dual (CommonJS + ESM) Dual package — require() works on every Node.js version we test; import works too

postcss-scss publishes both a CommonJS entry and a native ESM entry (ESM added in 3.0.0). require("postcss-scss") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=12.0. import "postcss-scss" works alongside it.

What to do

  1. Nothing to change. require("postcss-scss") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=12.0. import * as postcssScss from "postcss-scss" works alongside it; use named imports for what the ESM entry exports.
  2. TypeScript: types are bundled; install nothing extra.
Latest
4.0.9 (Sep 28, 2023)
Module format
Dual (CommonJS + ESM)
Last CommonJS version
4.0.9
Native ESM since
3.0.0
TypeScript types
Bundled
Node engines
>=12.0
Weekly downloads
5.2M
License
MIT

Does postcss-scss@4.0.9 actually load? Runtime test results

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

Runtimerequire("postcss-scss")import "postcss-scss"
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 postcss-scss

ES modules (import)

import * as postcssScss from "postcss-scss";

Namespace import shown because the ESM entry may have no default export; use named imports for what it exports.

CommonJS (require)

const postcssScss = require("postcss-scss");

Module format by version

Derived from the type, main and exports fields of every stable release on npm, corrected where a runtime test of that version contradicted them (42 versions; the newest 42 shown).

VersionsFormatFirst published
3.0.0 – 4.0.9Dual (CommonJS + ESM)Sep 15, 2020
0.1.0 – 2.1.1CommonJSAug 19, 2015

Frequently asked

Is postcss-scss ESM-only?

postcss-scss@4.0.9 ships CommonJS and ESM builds. postcss-scss publishes both a CommonJS entry and a native ESM entry (ESM added in 3.0.0). require("postcss-scss") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=12.0. import "postcss-scss" works alongside it.

Can I require postcss-scss?

Yes. postcss-scss ships a CommonJS entry alongside the native ESM entry. require("postcss-scss") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=12.0.

Does postcss-scss work in Bun?

Yes. import "postcss-scss" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

Does postcss-scss ship TypeScript types?

Yes. postcss-scss bundles its own type declarations; no @types package is needed.

Links

Other dual (commonjs + esm) packages

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