Asynchronous programming in JavaScript leverages features like callbacks, promises and async/await to sidestep this issue by allowing other code to run in the meantime.

Using callback-passing for asynchronous actions does not compose well and creates complex flows of passing callbacks around. The JavaScript community has produced several libraries to cope with this.

I keep hitting a code pattern in javascript that I'm having trouble writing in a readable, non-ugly pattern. (FWIW, I'm just transitioning back to javascript after being away. I might be missing a ...