They stole the good ideas from it and put it into ES6?
I'm not saying CoffeeScript is bad, nor ReScript. I just wouldn't use them for commercial purposes because its likely that most CoffeeScript projects today are legacy and I suspect ReScript will be the same in the future.
CoffeeScript is a language without static typing.
Despite this, CoffeeScript actually made a real revolution when it was introduced.
Agreed. Though we did get the glory of fat arrows from that misadventure!