I think we are exaggerating here. Javascript was terrible but with es6 it's just getting better, I know various languages and only Javascript manages to make me scream with its quirks, the others at most I feel disappointed. So "good" is an exaggeration, reasonable seems fine, but currently is either an OOP language where 'this' changes every time, or a functional language without native support for immutability, curried functions by default and a whole bunch of utilities that you expect from a language claiming to be functional. If it's a language with both mixed, must be compared to ruby which has consistent oop and functional programming with support for laziness and a super powerful ability to create dsl.

And in Javascript, it's still a nightmare importing a file. You either have a or you are on nodejs.