[douche]

This kind of hits one of the problems with JS on the head. There are too many different ways to do things, at all levels of abstraction, because it was such a limited, dumpster-fire of a language for so long, implemented in so many mutually incompatible ways by every different version of every browser, and so to do anything much more complicated than wiring up some basic callbacks on a page, you had to roll big chunks of infrastructure that better designed and more mature languages built in. So you end up with a half-dozen different patterns for object-oriented programming, another half dozen patterns for making async code less awful, three or four different patters for defining modules, etc, ad nauseum.

</rant>