canirequire

canirequire › CommonJS › karma

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

Spectacular Test Runner for JavaScript.

Last verified Sep 9, 2026 against karma@6.4.4. Markdown · JSON

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

karma ships CommonJS only. require("karma") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >= 10. import "karma" 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("karma") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >= 10.
  2. From ES modules use the default import: import karma from "karma"; then destructure. Named imports only work when Node.js can statically detect the exports.
  3. TypeScript: npm install -D @types/karma
Latest
6.4.4 (Jul 29, 2024)
Module format
CommonJS
Last CommonJS version
6.4.4
TypeScript types
@types/karma
Node engines
>= 10
Weekly downloads
2.9M
License
MIT

Does karma@6.4.4 actually load? Runtime test results

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

Runtimerequire("karma")import "karma"
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 karma

ES modules (import)

import karma from "karma";

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 karma = require("karma");

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 (186 versions; the newest 60 shown).

VersionsFormatFirst published
3.1.3 – 6.4.4CommonJSDec 1, 2018

Frequently asked

Is karma ESM-only?

karma@6.4.4 is a CommonJS package. karma ships CommonJS only. require("karma") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >= 10. import "karma" 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 karma with ES module syntax?

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

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

Does karma ship TypeScript types?

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

Links

Other commonjs packages

Similar popularity