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canirequire › Dual (CommonJS + ESM) › tailwindcss

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

A utility-first CSS framework for rapidly building custom user interfaces.

Last verified Sep 9, 2026 against tailwindcss@4.3.3. JSON

Dual (CommonJS + ESM) Dual package — both require() and import work

tailwindcss publishes both a CommonJS entry and a native ESM entry (ESM added in 4.0.0). require("tailwindcss") and import "tailwindcss" both work on every supported Node.js version and in Bun.

Latest
4.3.3 (Jul 16, 2026)
Module format
Dual (CommonJS + ESM)
Last CommonJS version
4.3.3
Native ESM since
4.0.0
TypeScript types
Bundled
Node engines
not declared
Weekly downloads
110.9M
License
MIT

Does tailwindcss@4.3.3 actually load? Runtime test results

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

Runtimerequire("tailwindcss")import "tailwindcss"
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 tailwindcss

ES modules (import)

import tailwindcss from "tailwindcss";

CommonJS (require)

const tailwindcss = require("tailwindcss");

Module format by version

Derived from the type, main and exports fields of every stable release on npm (239 versions; the newest 60 shown).

VersionsFormatFirst published
4.0.0 – 4.3.3Dual (CommonJS + ESM)Jan 21, 2025
3.4.6 – 3.4.19CommonJSJul 16, 2024

Frequently asked

Is tailwindcss ESM-only?

tailwindcss@4.3.3 ships CommonJS and ESM builds. tailwindcss publishes both a CommonJS entry and a native ESM entry (ESM added in 4.0.0). require("tailwindcss") and import "tailwindcss" both work on every supported Node.js version and in Bun.

Can I require tailwindcss?

Yes. tailwindcss ships a CommonJS entry, so require("tailwindcss") works on every Node.js version, alongside the native ESM entry for import.

Does tailwindcss work in Bun?

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

Does tailwindcss ship TypeScript types?

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

Links

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