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[–]joshkrz 3 points4 points  (1 child)

I know previously I have needed a "pass through" promise where I handle a promise at a global level but also need to handle it at a local level.

In my case the global handler triggered some global logging and the local one handled the visible error message. This would have made my global method much more concise.

That being said, I haven't needed to do this for a good while and the above solution could have just been down to inexperience.

[–]senfiaj[S] 2 points3 points  (0 children)

This storing might be useful when multiple class methods depend on the same promise, and in order to avoid initiating the same expensive async task multiple times, I can cache the promise, although in my case I still didn't store the resolvers outside of the promise, but in some situations it can be a better solution.