Sorry if my footnote's sarcasm was unclear. I really liked coffeescript, I still do. It never had the support it needed to succeed but was a decent enough improvement to be worthwhile. Plus being included in the rails Gemfile was the shot across the bow transpilers needed.

Typescript/ES6 took a lot of the goodness from CS, but I wish they took more. Hell, I wish the typed coffeescript became a thing.