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

a CSS selector compiler/engine

Last verified Sep 9, 2026 against css-select@7.0.0. Markdown · JSON

ESM-only ESM-only since 7.0.0 — last CommonJS version is 6.0.0

css-select dropped its CommonJS build in 7.0.0 (March 2026). The last version with a plain require()-able CommonJS entry is 6.0.0, published Jun 29, 2025.

On Node.js 20.19+, 22.12+ and newer, require("css-select") works with the latest version: Node.js loads synchronous ES modules through require(). Verified on Node.js 20, 22, 24 and 26. Node.js 18 has no require(esm), and css-select@7.0.0 declares Node.js >=20.19.0, so 18 is outside its supported range anyway.

css-select@7.0.0 declares engines ">=20.19.0", so Node.js 18 is outside its supported range regardless of module format.

What to do

  1. On Node.js 20.19+, 22.12+ and newer, require("css-select") works with the latest version: Node.js loads synchronous ES modules through require(). Verified on Node.js 20, 22, 24 and 26.
  2. From a CommonJS file, use a dynamic import inside an async function: const cssSelect = await import("css-select"). That works on every Node.js version the package supports (>=20.19.0).
  3. If you need a synchronous require() or run Node.js 18: npm install css-select@6.0.0, the last CommonJS release (published Jun 29, 2025).
  4. css-select@7.0.0 declares engines ">=20.19.0", so Node.js 18 is unsupported regardless: upgrade Node.js or pin an older release.
  5. TypeScript: types are bundled; install nothing extra.
Latest
7.0.0 (Mar 22, 2026)
Module format
ESM-only
Last CommonJS version
6.0.0
ESM-only since
7.0.0 (Mar 22, 2026)
TypeScript types
Bundled
Node engines
>=20.19.0
Weekly downloads
70.6M
License
BSD-2-Clause

Does css-select@7.0.0 actually load? Runtime test results

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

Runtimerequire("css-select")import "css-select"
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 1.4.0✓ works✓ works

How to import css-select

ES modules (import)

import * as cssSelect from "css-select";

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

CommonJS (require)

// Node.js 20.19+, 22.12+ and newer (verified):
const cssSelect = require("css-select");

// Any Node.js version the package supports (>=20.19.0), from an async function:
async function main() {
  const cssSelect = await import("css-select");
}

// Or pin the last CommonJS release:
// npm install css-select@6.0.0

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 (30 versions; the newest 30 shown).

VersionsFormatFirst published
7.0.0ESM-onlyMar 22, 2026
5.0.0 – 6.0.0Dual (CommonJS + ESM)Apr 24, 2022
1.0.0 – 4.3.0CommonJSFeb 3, 2015

Frequently asked

Is css-select ESM-only?

css-select@7.0.0 is ESM-only. css-select dropped its CommonJS build in 7.0.0 (March 2026). The last version with a plain require()-able CommonJS entry is 6.0.0, published Jun 29, 2025.

Which version of css-select still supports CommonJS / require()?

6.0.0 is the last version of css-select with a CommonJS build. Install it with "npm install css-select@6.0.0". Every version from 7.0.0 on is ESM-only.

How do I use css-select from a CommonJS file?

From a CommonJS file, use a dynamic import inside an async function: const cssSelect = await import("css-select"). That works on every Node.js version the package supports (>=20.19.0). On Node.js 20.19+, 22.12+ and newer, require("css-select") works with the latest version: Node.js loads synchronous ES modules through require(). Verified on Node.js 20, 22, 24 and 26. Alternatively pin css-select@6.0.0.

Does css-select work in Bun?

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

Does css-select ship TypeScript types?

Yes. css-select bundles its own type declarations; no @types package is needed.

Links

Other esm-only packages

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