It would be really nice if we could use native ECMAScript 2015 Promises with Angular instead of $q service that is provided from box to be close to pure JavaScript:

[javascript]
//somewhere inside component controller
let promise = new Promise((resolve) => setTimeout(() => resolve(‘resolved’), 2000));
promise.then(x => this.x = x);
[/javascript]

But in this case we will have to run digest manually for each resolve(to synchronise view and model):

[javascript]
let promise = new Promise((resolve) => setTimeout(() => resolve(‘resolved’), 2000));
promise.then(x => {
$scope.apply();
this.x = x;
});
[/javascript]

But what if we hack the Promise and intercept our digest call there:

[javascript]
class SubPromise extends Promise {
constructor(executor) {
super(function(_resolve, _reject) {
var resolve = (data) => {
var res = _resolve(data);
angular.element(document.body).injector().get(‘$rootScope’).$apply();
return res;
}
return executor(resolve, _reject);
});
}
}
[/javascript]

now we just need to overwrite standard Promise:

[javascript]
window.Promise = SubPromise;
[/javascript]

to keep it simple to cover for unit-tests you can also wrap it into an angular factory:

[javascript]
factory(‘Promise’, () => Promise);
[/javascript]

Here you can play with the code.

Discussion on stackoverflow about customising ES6 Promise.

!Attention: This experiment was made just for learning purposes and it should not be applied for the real projects.