Last change
on this file since 6c1585f was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago |
initial commit
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File size:
1.2 KB
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1 | import { Subscriber } from '../Subscriber';
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2 | import { async } from '../scheduler/async';
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3 | export function sampleTime(period, scheduler = async) {
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4 | return (source) => source.lift(new SampleTimeOperator(period, scheduler));
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5 | }
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6 | class SampleTimeOperator {
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7 | constructor(period, scheduler) {
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8 | this.period = period;
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9 | this.scheduler = scheduler;
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10 | }
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11 | call(subscriber, source) {
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12 | return source.subscribe(new SampleTimeSubscriber(subscriber, this.period, this.scheduler));
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13 | }
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14 | }
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15 | class SampleTimeSubscriber extends Subscriber {
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16 | constructor(destination, period, scheduler) {
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17 | super(destination);
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18 | this.period = period;
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19 | this.scheduler = scheduler;
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20 | this.hasValue = false;
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21 | this.add(scheduler.schedule(dispatchNotification, period, { subscriber: this, period }));
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22 | }
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23 | _next(value) {
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24 | this.lastValue = value;
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25 | this.hasValue = true;
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26 | }
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27 | notifyNext() {
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28 | if (this.hasValue) {
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29 | this.hasValue = false;
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30 | this.destination.next(this.lastValue);
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31 | }
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32 | }
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33 | }
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34 | function dispatchNotification(state) {
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35 | let { subscriber, period } = state;
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36 | subscriber.notifyNext();
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37 | this.schedule(state, period);
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38 | }
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39 | //# sourceMappingURL=sampleTime.js.map |
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