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

Easy unit testing for node.js and the browser.

Last verified Sep 9, 2026 against nodeunit@0.11.3. Markdown · JSON

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

nodeunit ships CommonJS only. require("nodeunit") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. import "nodeunit" 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.

What to do

  1. require("nodeunit") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun.
  2. From ES modules use the default import: import nodeunit from "nodeunit"; then destructure. Named imports only work when Node.js can statically detect the exports.
  3. TypeScript: npm install -D @types/nodeunit
  4. This package is deprecated: you are strongly encouraged to use other testing options
Latest
0.11.3 (Jul 9, 2018)
Module format
CommonJS
Last CommonJS version
0.11.3
TypeScript types
@types/nodeunit
Node engines
not declared
Weekly downloads
43K
License
MIT

Deprecated: you are strongly encouraged to use other testing options

Does nodeunit@0.11.3 actually load? Runtime test results

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

Runtimerequire("nodeunit")import "nodeunit"
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 nodeunit

ES modules (import)

import nodeunit from "nodeunit";

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 nodeunit = require("nodeunit");

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 (48 versions; the newest 48 shown).

VersionsFormatFirst published
0.1.0 – 0.11.3CommonJSMar 4, 2011

Frequently asked

Is nodeunit ESM-only?

nodeunit@0.11.3 is a CommonJS package. nodeunit ships CommonJS only. require("nodeunit") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. import "nodeunit" 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 nodeunit with ES module syntax?

Yes. import nodeunit from "nodeunit" 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 nodeunit work in Bun?

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

Does nodeunit ship TypeScript types?

Not bundled. Install the community types with "npm install -D @types/nodeunit".

Links

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