Promise Of Promise To Simple Promise?

I've been playing with promises, and usually can figure out how to handle them well, but in this situation, I can't figure out how to remove one promise-wrapping level. Here is the

Solution 1:

level1 is a promise itself.

No it's not. Ember does use RSVP, which is Promises/A+ compatible, and that means that then callbacks are never called with a promise (or thenable). They always receive a plain value.

Promises/A+ does mandate that there are no nested promises returned from then. They are always recursively unwrapped. You can just do

promise2.then(connections =>console.log(connections));

If this really doesn't work, that would suggest that promise1 is no real (or at least no standard-conformant) promise, and you should do promise1 = Promise.resolve(promise1) first.