ninjs

https://github.com/daytonn/ninjs

Ninjs is a ruby application and small javascript framework that helps you build clean, modular javascript applications. Ninjs encourages "Good Parts" best practices and the Crockford school Module pattern (http://www.crockford.com/). The ninjs command line application is an automatic compiler, written in ruby, and based on the Sprockets library (http://getsprockets.org/).