node package manager


The official JavaScript implementation of Cucumber.


Cucumber is a tool for running automated tests written in plain language. Because they're written in plain language, they can be read by anyone on your team. Because they can be read by anyone, you can use them to help improve communication, collaboration and trust on your team.

Cucumber.js is the JavaScript implementation of Cucumber and runs on both Node.js and modern web browsers.

We've put a demo of Cucumber.js to run in your browser. Why don't you give it a try before anything else?

See for info on contributing to Cucumber.js.

Everyone interacting in this codebase and issue tracker is expected to follow the Cucumber code of conduct.

Cucumber.js is available as an npm module.

$ npm install cucumber
  • Grab the latest browserified code from the release folder