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

A fast browserify integration for Karma that handles large projects with ease

Last verified Sep 9, 2026 against karma-browserify@8.1.0. JSON

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

karma-browserify ships CommonJS only. require("karma-browserify") works everywhere. import "karma-browserify" 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.

Latest
8.1.0 (Jul 15, 2021)
Module format
CommonJS
Last CommonJS version
8.1.0
TypeScript types
@types/karma-browserify
Node engines
>=10
Weekly downloads
46K
License
MIT

Does karma-browserify@8.1.0 actually load? Runtime test results

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

Runtimerequire("karma-browserify")import "karma-browserify"
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 karma-browserify

ES modules (import)

import karmaBrowserify from "karma-browserify";

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 karmaBrowserify = require("karma-browserify");

Module format by version

Derived from the type, main and exports fields of every stable release on npm (44 versions; the newest 44 shown).

VersionsFormatFirst published
0.0.1 – 8.1.0CommonJSJun 10, 2013

Frequently asked

Is karma-browserify ESM-only?

karma-browserify@8.1.0 is a CommonJS package. karma-browserify ships CommonJS only. require("karma-browserify") works everywhere. import "karma-browserify" 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-browserify with ES module syntax?

Yes. import karmaBrowserify from "karma-browserify" 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-browserify work in Bun?

Yes. import "karma-browserify" loaded successfully in Bun 1.4 on Sep 9, 2026.

Does karma-browserify ship TypeScript types?

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

Links

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