37 lines
1.1 KiB
JavaScript
37 lines
1.1 KiB
JavaScript
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import { OuterSubscriber } from '../OuterSubscriber';
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import { subscribeToResult } from '../util/subscribeToResult';
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export function exhaust() {
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return (source) => source.lift(new SwitchFirstOperator());
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}
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class SwitchFirstOperator {
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call(subscriber, source) {
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return source.subscribe(new SwitchFirstSubscriber(subscriber));
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}
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}
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class SwitchFirstSubscriber extends OuterSubscriber {
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constructor(destination) {
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super(destination);
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this.hasCompleted = false;
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this.hasSubscription = false;
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}
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_next(value) {
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if (!this.hasSubscription) {
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this.hasSubscription = true;
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this.add(subscribeToResult(this, value));
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}
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}
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_complete() {
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this.hasCompleted = true;
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if (!this.hasSubscription) {
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this.destination.complete();
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}
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}
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notifyComplete(innerSub) {
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this.remove(innerSub);
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this.hasSubscription = false;
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if (this.hasCompleted) {
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this.destination.complete();
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}
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}
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}
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//# sourceMappingURL=exhaust.js.map
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