with async.queue order of execution is different when using promises instead of callbacks but should be identical about async HOT 2 OPEN

It seems that the queue actually waits for the job to end to start the new one but there is a difference on when the callback is called in terms of async logic: https://stackblitz.com/edit/node-1fslka?file=index.js

from async.

I'm not sure this is an actual issue? There will always be subtle differences in timing with using callbacks vs functions. If you need to the task callback to not block the event loop, you can always defer inside it.

from async.