39 lines
1.2 KiB
JavaScript
39 lines
1.2 KiB
JavaScript
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import { Subscriber } from '../Subscriber';
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import { async } from '../scheduler/async';
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export function sampleTime(period, scheduler = async) {
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return (source) => source.lift(new SampleTimeOperator(period, scheduler));
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}
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class SampleTimeOperator {
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constructor(period, scheduler) {
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this.period = period;
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this.scheduler = scheduler;
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}
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call(subscriber, source) {
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return source.subscribe(new SampleTimeSubscriber(subscriber, this.period, this.scheduler));
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}
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}
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class SampleTimeSubscriber extends Subscriber {
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constructor(destination, period, scheduler) {
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super(destination);
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this.period = period;
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this.scheduler = scheduler;
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this.hasValue = false;
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this.add(scheduler.schedule(dispatchNotification, period, { subscriber: this, period }));
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}
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_next(value) {
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this.lastValue = value;
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this.hasValue = true;
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}
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notifyNext() {
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if (this.hasValue) {
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this.hasValue = false;
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this.destination.next(this.lastValue);
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}
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}
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}
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function dispatchNotification(state) {
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let { subscriber, period } = state;
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subscriber.notifyNext();
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this.schedule(state, period);
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}
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//# sourceMappingURL=sampleTime.js.map
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