Maybe Crockford is a bit behind the times. In the good old days, if it were still 2011, this wouldn't be NIH. Back then, everyone was still writing their own async flow control libraries. It was like a rite of passage into the node world. I remember my first one: https://github.com/chjj/N

I'm sure every early node person here has one, even if they didn't push it to github.

Looking back at it, I'm suddenly feeling a bit nostalgic for those days.