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Is stylelint ESM-only? Can you require() it?

A mighty CSS linter that helps you avoid errors and enforce conventions.

Last verified Sep 9, 2026 against stylelint@17.15.0. JSON

ESM-only ESM-only since 17.0.0 — last CommonJS version is 16.26.1

stylelint dropped its CommonJS build in 17.0.0 (January 2026). The last version you can require() on every Node.js version, including 18 and older, is 16.26.1, published Nov 28, 2025.

On Node.js 20.19+, 22.12+ and every newer release, require("stylelint") works anyway: Node can load synchronous ES modules through require(). Verified on Node 20, 22, 24, 26. Node.js 18 and older still fail with ERR_REQUIRE_ESM.

stylelint@17.15.0 declares engines ">=20.19.0", so Node.js 18 is outside its supported range regardless of module format.

Latest
17.15.0 (Sep 4, 2026)
Module format
ESM-only
Last CommonJS version
16.26.1
ESM-only since
17.0.0 (Jan 15, 2026)
TypeScript types
Bundled
Node engines
>=20.19.0
Weekly downloads
9.8M
License
MIT

Does stylelint@17.15.0 actually load? Runtime test results

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

Runtimerequire("stylelint")import "stylelint"
Node.js 18✗ failsERR_REQUIRE_ESM✓ 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 stylelint

ES modules (import)

import stylelint from "stylelint";

CommonJS (require)

// Node.js 20.19+ / 22.12+ / newer (package has no top-level await):
const stylelint = require("stylelint");

// Any Node.js version:
const stylelint = await import("stylelint");

// Or pin the last CommonJS release:
// npm install stylelint@16.26.1

Module format by version

Derived from the type, main and exports fields of every stable release on npm (277 versions; the newest 60 shown).

VersionsFormatFirst published
17.0.0 – 17.15.0ESM-onlyJan 15, 2026
16.0.1 – 16.26.1Dual (CommonJS + ESM)Dec 8, 2023

Frequently asked

Is stylelint ESM-only?

stylelint@17.15.0 is ESM-only. stylelint dropped its CommonJS build in 17.0.0 (January 2026). The last version you can require() on every Node.js version, including 18 and older, is 16.26.1, published Nov 28, 2025.

Which version of stylelint still supports CommonJS / require()?

16.26.1 is the last version of stylelint with a CommonJS build. Install it with "npm install stylelint@16.26.1". Every version from 17.0.0 on is ESM-only.

How do I use stylelint from a CommonJS file?

Use a dynamic import: const mod = await import("stylelint"). On Node.js 20.19+, 22.12+ and newer, a plain require("stylelint") also works for ESM packages that do not use top-level await. Alternatively pin stylelint@16.26.1.

Does stylelint work in Bun?

Yes. import "stylelint" loaded successfully in Bun 1.4 on Sep 9, 2026.

Does stylelint ship TypeScript types?

Yes. stylelint bundles its own type declarations; no @types package is needed.

Links

Other esm-only packages

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