You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
37 lines
1.1 KiB
37 lines
1.1 KiB
import { OuterSubscriber } from '../OuterSubscriber';
|
|
import { subscribeToResult } from '../util/subscribeToResult';
|
|
export function exhaust() {
|
|
return (source) => source.lift(new SwitchFirstOperator());
|
|
}
|
|
class SwitchFirstOperator {
|
|
call(subscriber, source) {
|
|
return source.subscribe(new SwitchFirstSubscriber(subscriber));
|
|
}
|
|
}
|
|
class SwitchFirstSubscriber extends OuterSubscriber {
|
|
constructor(destination) {
|
|
super(destination);
|
|
this.hasCompleted = false;
|
|
this.hasSubscription = false;
|
|
}
|
|
_next(value) {
|
|
if (!this.hasSubscription) {
|
|
this.hasSubscription = true;
|
|
this.add(subscribeToResult(this, value));
|
|
}
|
|
}
|
|
_complete() {
|
|
this.hasCompleted = true;
|
|
if (!this.hasSubscription) {
|
|
this.destination.complete();
|
|
}
|
|
}
|
|
notifyComplete(innerSub) {
|
|
this.remove(innerSub);
|
|
this.hasSubscription = false;
|
|
if (this.hasCompleted) {
|
|
this.destination.complete();
|
|
}
|
|
}
|
|
}
|
|
//# sourceMappingURL=exhaust.js.map
|