[calibraxis]

Disclaimer: I don't know Discourse's situation in detail, and I use CoffeeScript on node.js, not the client.

The sheer mass of anti-CoffeeScript FUD ironically makes it more likely that they'll get more contributions if they go back to JavaScript. ;) YOU might know people who seriously consider Erlang and Clojure, but most people respond badly to superficial syntactical differences.

Of course, is "contributions" really the best metric? What about productivity or quality? And can they make it so that people can easily contribute JavaScript?

(Even among people I know, I've heard such irrational FUD against CoffeeScript. And I know it's FUD because none of their boogiemen came true after I aggressively introduced it into their codebase. They now use it every day without concern. Most people hate innovation, including programmers.)

In particular, the ES6 argument sounds like FUD. Did they link to timelines and CoffeeScript developers' opinions? And where's the tradeoff analysis comparing the immediate productivity benefits of CoffeeScript vs some future ES6 event?