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

A Karma plugin. Launcher for Chrome and Chrome Canary.

Last verified Sep 9, 2026 against karma-chrome-launcher@3.2.0. JSON

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

karma-chrome-launcher ships CommonJS only. require("karma-chrome-launcher") works everywhere. import "karma-chrome-launcher" 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
3.2.0 (Apr 20, 2023)
Module format
CommonJS
Last CommonJS version
3.2.0
TypeScript types
@types/karma-chrome-launcher
Node engines
not declared
Weekly downloads
2.7M
License
MIT

Does karma-chrome-launcher@3.2.0 actually load? Runtime test results

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

Runtimerequire("karma-chrome-launcher")import "karma-chrome-launcher"
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-chrome-launcher

ES modules (import)

import karmaChromeLauncher from "karma-chrome-launcher";

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 karmaChromeLauncher = require("karma-chrome-launcher");

Module format by version

Derived from the type, main and exports fields of every stable release on npm (28 versions; the newest 28 shown).

VersionsFormatFirst published
0.0.1 – 3.2.0CommonJSMar 19, 2013

Frequently asked

Is karma-chrome-launcher ESM-only?

karma-chrome-launcher@3.2.0 is a CommonJS package. karma-chrome-launcher ships CommonJS only. require("karma-chrome-launcher") works everywhere. import "karma-chrome-launcher" 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-chrome-launcher with ES module syntax?

Yes. import karmaChromeLauncher from "karma-chrome-launcher" 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-chrome-launcher work in Bun?

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

Does karma-chrome-launcher ship TypeScript types?

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

Links

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