The real problem is that these APIs don't come easy, and given that JS didn't bother to even start on this stuff until recently other languages have up to 25 ye

The real problem is that these APIs don't come easy, and given that JS didn't bother to even start on this stuff until recently other languages have up to 25 years head start on JS. It doesn't help that the standards guys are just playing around implementing stuff piecemeal, so you end up with Map and Set, and the literally useless WeakSet, rather than just building a solid collections framework, or service workers where as soon as a feature is implemented in all browsers it gets deprecated because something shinier comes along. Even the stuff that is announced is horribly documented to the extent that most people will never discover it or figure out how to use it. W3Schools hangs around at the top of search results like an unusually stupid cancer, chrome document nothing, and MDN does okay but is weak on tutorial and has some awkward holes.