"There's no reason to be in callback hell if you use an asynchronous control flow library" There's no good reason to pile flawed layers on top of eachother. If

"There's no reason to be in callback hell if you use an asynchronous control flow library" There's no good reason to pile flawed layers on top of eachother. If you have a fully yieldable/resumable VM (e.g. Lua), you can just solve the problem properly in the first place, in a way that doesn't then require a second or third layer of workarounds to be usable.