It's time to replace CoffeeScript with Babel and CoffeeLint with eslint.
CoffeeScript was useful a few years ago. It provided many features that
JavaScript was lacking. It gave us the fat arrow (lexical this
functions),
default parameters, destructuring assignments, splats (spread operator), a
class
keyword, block strings, and more. Everything in the list above is now
part of the JavaScript standard. JavaScript is moving forward and gaining