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

Selector parser with built in methods for working with selector strings.

Last verified Sep 9, 2026 against postcss-selector-parser@7.1.6. JSON

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

postcss-selector-parser ships CommonJS only. require("postcss-selector-parser") works everywhere. import "postcss-selector-parser" 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
7.1.6 (Sep 3, 2026)
Module format
CommonJS
Last CommonJS version
7.1.6
TypeScript types
Bundled
Node engines
>=4
Weekly downloads
100.4M
License
MIT

Does postcss-selector-parser@7.1.6 actually load? Runtime test results

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

Runtimerequire("postcss-selector-parser")import "postcss-selector-parser"
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 postcss-selector-parser

ES modules (import)

import postcssSelectorParser from "postcss-selector-parser";

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 postcssSelectorParser = require("postcss-selector-parser");

Module format by version

Derived from the type, main and exports fields of every stable release on npm (61 versions; the newest 60 shown).

VersionsFormatFirst published
0.0.2 – 7.1.6CommonJSMay 29, 2015

Frequently asked

Is postcss-selector-parser ESM-only?

postcss-selector-parser@7.1.6 is a CommonJS package. postcss-selector-parser ships CommonJS only. require("postcss-selector-parser") works everywhere. import "postcss-selector-parser" 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 postcss-selector-parser with ES module syntax?

Yes. import postcssSelectorParser from "postcss-selector-parser" 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 postcss-selector-parser work in Bun?

Yes. import "postcss-selector-parser" loaded successfully in Bun 1.4 on Sep 9, 2026.

Does postcss-selector-parser ship TypeScript types?

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

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