I never got to use z but I can't live without github.com/ajeetdsouza/...

And if that's your problem. You can chain Promise chains by returning the whole chain and returning the value inside the callback. Eg.

function outside {
Inside.then(insideResult =>...
}

function inside {
return somethingAsync.then(val => val)
}

This question implies you're combining async functions with sync ones. I'm guessing you're using `something.then` syntax instead of async/await and having the result "trapped" in that callback. This article might shed a different perspective on it.

journal.stuffwithstuff.com/2015/02/01/w...