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

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Last verified Sep 9, 2026 against kleur@4.1.5. Markdown · JSON

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

kleur publishes both a CommonJS entry and a native ESM entry (ESM added in 4.0.0). require("kleur") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=6. import "kleur" works alongside it.

What to do

  1. Nothing to change. require("kleur") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=6. import * as kleur from "kleur" works alongside it; use named imports for what the ESM entry exports.
  2. TypeScript: types are bundled; install nothing extra.
Latest
4.1.5 (Jun 26, 2022)
Module format
Dual (CommonJS + ESM)
Last CommonJS version
4.1.5
Native ESM since
4.0.0
TypeScript types
Bundled
Node engines
>=6
Weekly downloads
70.9M
License
MIT

Does kleur@4.1.5 actually load? Runtime test results

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

Runtimerequire("kleur")import "kleur"
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 kleur

ES modules (import)

import * as kleur from "kleur";

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

CommonJS (require)

const kleur = require("kleur");

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 (21 versions; the newest 21 shown).

VersionsFormatFirst published
4.0.0 – 4.1.5Dual (CommonJS + ESM)Jun 17, 2020
0.0.0 – 3.0.3CommonJSJul 8, 2018

Frequently asked

Is kleur ESM-only?

kleur@4.1.5 ships CommonJS and ESM builds. kleur publishes both a CommonJS entry and a native ESM entry (ESM added in 4.0.0). require("kleur") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=6. import "kleur" works alongside it.

Can I require kleur?

Yes. kleur ships a CommonJS entry alongside the native ESM entry. require("kleur") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=6.

Does kleur work in Bun?

Yes. import "kleur" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

Does kleur ship TypeScript types?

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

Links

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