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import { Observable } from '../Observable';
import { SchedulerLike } from '../types';
import { Subscription } from '../Subscription';
import { subscribeToPromise } from '../util/subscribeToPromise';
export function fromPromise<T>(input: PromiseLike<T>, scheduler?: SchedulerLike) {
if (!scheduler) {
return new Observable<T>(subscribeToPromise(input));
} else {
return new Observable<T>(subscriber => {
const sub = new Subscription();
sub.add(scheduler.schedule(() => input.then(
value => {
sub.add(scheduler.schedule(() => {
subscriber.next(value);
sub.add(scheduler.schedule(() => subscriber.complete()));
}));
},
err => {
sub.add(scheduler.schedule(() => subscriber.error(err)));
}
)));
return sub;
});
}
}
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