Exactly. What is with this fascination of removing information from code? My first thought when reading this was, ok, OP is "annoyed" at having to "run functio

Exactly. What is with this fascination of removing information from code? My first thought when reading this was, ok, OP is "annoyed" at having to "run functions to see if they return a value or a Promise", then goes on to describe a world in which you have no idea whether anything returns a value or a Promise when reading the code. That's 100x worse. At least when I'm writing it I'm probably running the function anyway. And it's worth pointing out that you shouldn't need to run anything to know what it returns, that's what docs are for. Or you could just look at the return statement. But even if for whatever reason you don't know what data you're working with, I'd rather figure it out once and then make it explicit, than have to figure it out every single time the code is read (which could be hundreds of times, or more).