A way to cancel a Promise in ES6/7?

Question

JavaScript

Is there a convenient way to cancel running functions asynchronously?
Similar questions were already asked a couple of years ago, but at that time there was only one option - to stop the execution of functions manually in certain places.
And if there are quite a lot of async functions, like attachments, then you will have to make stops in each of them, which is quite inconvenient

Answer 1

Standard promises are not canceled https://github.com/tc39/proposal-cancelable-promises
https://medium.com/@benlesh/promise-cancellation-i...
And I think the main reason is https://github .com/tc39/proposal-observable
Alternatively, use bluebirdjs.com/docs/getting-started.html
Or
Option 4 - Ditch promises and just use Observables! (This author's totally biased choice)
Okay, this isn't an answer, but if you're already using Observables, you could just use an observable, it's not that much different from a promise, other than it's lazy, it's built to handle more than one value if needed, and it's cancellable.
https://github.com/ReactiveX/rxjs