For your Taming Async article... about js-csp

[XVincentX]

It looks like you're right. It returns an IteratorResult which cannot be awaited, of course.

[getify]

async..await-based CSP looks great, but is inherently more limited than generators-based CSP, because you have no control over the scheduling of resumption of the coroutines. The JS engine controls the scheduling of promise resolution, and you have no control from the outside of an async function. That means starvation could occur. I have a generators-based CSP implementation so I've dealt with the scheduling issues first-hand.