Debugging JavaScript on the client side is easier with the built-in developer tools in Chrome and similar browsers. But how would you use a debugger on a CoffeeScript program? Or in a second scenario, what if your JavaScript source files get combined, minified and optimised for production. Wouldn’t it be nice for the code to still be readable and debuggable on the client side? Enter Source Maps. In this talk, we will learn how to get started debugging CoffeeScript applications using Source Maps.