Polyfill Promise only for IE

[steida]

I think it's right time to polyfill Promise.
http://caniuse.com/#search=promise

[XeeD]

import Bluebird from 'bluebird';
// Node
global.Promise = Bluebird;
// Browser
window.Promise = Bluebird;

Is it as simple as this?

[steida]

I would rather use native Promise where available. There are some trade-offs, need to rethink it.

[XeeD]

I spent hours and hours because I used native Promise instead of Bluebird. The basic error reporting is very bad, at least in Chrome.

[steida]

That's good to know. Also, we want to have the same implementation everywhere to ensure the same behavior. And angular/angular.js#6697 (comment) and petkaantonov/bluebird#217

Overriding globals seems to be weird for me, so, I suggest to use plain old import Promise, because that's just works.