About a year a ago, started from scratch writing a front-end client SPA for web-based software -- it&#x27;s a custom framework built around Backbone.js and jQuery, written in CoffeeScript.  The .coffee files are beautiful, and on save a shell script automatically compiles all the .coffee files down to a single JavaScript file that I would describe as good JavaScript code.<p>Not open source, so no demo, but it&#x27;s definitely possible to create good JS.