Learning JavaScript in 2018

I've interviewed so many junior and mid-level candidates who will opine at length about react vs. angular or why redux is the one true way to manage state, but who don't know about `setTimeout` or other fundamental language features. that kind of spotty, "just throw it together" knowledge may be enough to land a job somewhere, but it certainly isn't enough to solve anything beyond factory-floor, Lego-like app delivery.

I wish I knew the solution, because the problem only seems to be getting worse despite my thinking that "peak framework" is just around the corner in the js community.