That's gotten trendy in the recent past, but I think you have a generation or wave of developers who literally don't realize it's an interpreted language and you can write short, very sweet vanilla JS and have it run almost everywhere without needing any ahead of time optimizations. _Modern_ JS in _modern_ engines is a dream!

If you will try to profile your app on V8 you will find that almost everything is in binary code, not interpreted.

In this sense it means not requiring a precompilation step. JITing is an implementation detail; also modern engines compile to a bytecode first during interpretation.

Thhis got me to look up some of the ages, for anyone else curious: ClojureScript is 9-ish year old, CoffeeScript 10+, TypeScript 7.