I do not have a single 'this' pointer in my programs. Not a single class/prototype. Imo, that leaves: Bad/no pattern matching support, many operators create sta

I do not have a single 'this' pointer in my programs. Not a single class/prototype. Imo, that leaves: Bad/no pattern matching support, many operators create statements and not expressions (e.g if/else) but they can be extracted to functions. Also, relative path imports. This is nuts. But you can use root imports with webpack+TS and the problem is solved. mutable objects/arrays is annoying. But we have the convention of never doing it, and it's been working for a long time. (https://github.com/AlexGalays/immupdate https://github.com/AlexGalays/immupdate) Granted, I would prefer immutable by default for sure. Do you have other insane JS semantics in mind? And yeah, F# looks brillant. Just wished it was not a .NET thing. Fable could interest me but it's just like bucklescript/reasonml: there is no momentum, no community, no libs. It would be a big leap of faith to heavily invest in it as an individual. I generally like the FP approach with imperative escape hatches. Need more performance? Some code is actually more elegant in imperative form? Go for it. F# can do it, scala can do it too (unfortunately with some crappy java compatibility concerns to deal with)