ecmascript-2017 - Read For Learn

Combination of async function + await + setTimeout

Your sleep function does not work because setTimeout does not (yet?) return a promise that could be awaited. You will need to promisify it manually: Btw, to slow down your loop you probably don’t want to use a sleep function that takes a callback and defers it like this. I recommend: which lets the computation of parents take at least 5 seconds.

Using async/await with a forEach loop

Sure the code does work, but I’m pretty sure it doesn’t do what you expect it to do. It just fires off multiple asynchronous calls, but the printFiles function does immediately return after that. Reading in sequence If you want to read the files in sequence, you cannot use forEach indeed. Just use a modern for … of loop instead, in which await will … Read more