Last change
on this file since 6a80231 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago |
initial commit
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100644
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File size:
1.1 KB
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1 | import { Subject } from './Subject';
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2 | import { Subscription } from './Subscription';
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3 | export class AsyncSubject extends Subject {
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4 | constructor() {
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5 | super(...arguments);
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6 | this.value = null;
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7 | this.hasNext = false;
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8 | this.hasCompleted = false;
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9 | }
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10 | _subscribe(subscriber) {
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11 | if (this.hasError) {
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12 | subscriber.error(this.thrownError);
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13 | return Subscription.EMPTY;
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14 | }
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15 | else if (this.hasCompleted && this.hasNext) {
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16 | subscriber.next(this.value);
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17 | subscriber.complete();
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18 | return Subscription.EMPTY;
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19 | }
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20 | return super._subscribe(subscriber);
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21 | }
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22 | next(value) {
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23 | if (!this.hasCompleted) {
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24 | this.value = value;
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25 | this.hasNext = true;
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26 | }
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27 | }
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28 | error(error) {
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29 | if (!this.hasCompleted) {
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30 | super.error(error);
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31 | }
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32 | }
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33 | complete() {
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34 | this.hasCompleted = true;
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35 | if (this.hasNext) {
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36 | super.next(this.value);
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37 | }
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38 | super.complete();
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39 | }
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40 | }
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41 | //# sourceMappingURL=AsyncSubject.js.map |
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