Promises in the JS world have lost out to async[1].
The callback pyramid madness has been traded for a simple and flat waterfall[2].
The constant .then and .catch when working with promises naturally makes a lot of people uncomfortable, and on top of that the async library provides a plethora of other collection manipulation and control flow utilities.
Frankly I think managing side effects should be abstracted away, and furthermore I cannot wait for C#-like async/await to become first-class citizens in the JS world.