linwenling
2023-08-09 45b0c23655abe2b1f82e3e5ca7d07d9f0c4cc6e1
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import { Observable } from '../Observable';
import { SchedulerLike } from '../types';
import { subscribeToPromise } from '../util/subscribeToPromise';
import { schedulePromise } from '../scheduled/schedulePromise';
 
export function fromPromise<T>(input: PromiseLike<T>, scheduler?: SchedulerLike) {
  if (!scheduler) {
    return new Observable<T>(subscribeToPromise(input));
  } else {
    return schedulePromise(input, scheduler);
  }
}