Has anyone used Coffeescript for a production application? [closed]

Answer 1

We use coffeescript for all of the javascript in BusyConf. A large portion of BusyConf is a client side application that runs in browers, including support for offline mode.

All of our coffeescript code is fully tested. The tests themselves are written in coffeescript, and use the Qunit framework (which is written in javascript). We also wrote an extension to the Qunit framework that makes the tests nicer. The Qunit extension is written in CoffeeScript. Our application has a mobile version which is written in CoffeeScript, and it uses the Sencha Touch framework (which is written in javascript).

The take away from that is that you can freely intermix javascript dependencies in your application, but all of the code you write (your application code, tests, etc) can (and should!) be coffeescript.