31 lines
768 B
JavaScript
31 lines
768 B
JavaScript
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import { Subscriber } from '../Subscriber';
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export function isEmpty() {
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return (source) => source.lift(new IsEmptyOperator());
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}
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class IsEmptyOperator {
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call(observer, source) {
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return source.subscribe(new IsEmptySubscriber(observer));
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}
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}
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/**
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* We need this JSDoc comment for affecting ESDoc.
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* @ignore
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* @extends {Ignored}
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*/
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class IsEmptySubscriber extends Subscriber {
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constructor(destination) {
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super(destination);
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}
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notifyComplete(isEmpty) {
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const destination = this.destination;
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destination.next(isEmpty);
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destination.complete();
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}
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_next(value) {
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this.notifyComplete(false);
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}
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_complete() {
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this.notifyComplete(true);
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}
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}
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//# sourceMappingURL=isEmpty.js.map
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