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

Answer 1

Note that although there is a compiler, you don't get static checking due to JavaScript's dynamic nature. As written in the FAQ:

Static Analysis

CoffeeScript uses a straight source-to-source compiler. No type checking is performed, and we can't work out if a variable even exists or not. This means that we can't implement features that other languages can build in natively without costly runtime checks. As a result, any feature which relies on this kind of analysis won't be considered.

IDE support is less mature than that of JavaScript (Cloud9 has syntax highlight support, but Eclipse JSDT has refactorings and more): https://stackoverflow.com/questions/4084167/ide-or-its-add-in-for-coffescript-programming