Aha! is a Rails monolith. Although we have embraced front end technologies, such as webpack and React, Rails is the glue that holds everything together. And like many Rails monoliths, CoffeeScript made up the bulk of our front end code. It was the obvious choice for us when Aha! launched in 2013 — back when Rails 3 was stable and ES6 still lived in arcane specification documents.
How I Convinced Our CTO to Switch From CoffeeScript to ES6
