I've had trouble learning CoffeeScript due to the compiler not providing any help whatsoever when you make a mistake.
I was writing a web server that just wouldn't compile, looked the code over several times and eventually gave up and did it in javascript instead. Later found out that Gedit was displaying a tab that vim showed as just being a space. Never tested if that was the only problem or not.
Agreed. The compiler definitely isn't as helpful as it could be in giving information about errors. On the other hand, a lot of the errors it hits at compile-time are things you wouldn't have noticed until run-time if you were writing JavaScript.
I was writing a web server that just wouldn't compile, looked the code over several times and eventually gave up and did it in javascript instead. Later found out that Gedit was displaying a tab that vim showed as just being a space. Never tested if that was the only problem or not.