Last change
on this file was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago |
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File size:
676 bytes
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1 | import { Subscriber } from '../Subscriber';
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2 | export function isEmpty() {
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3 | return (source) => source.lift(new IsEmptyOperator());
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4 | }
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5 | class IsEmptyOperator {
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6 | call(observer, source) {
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7 | return source.subscribe(new IsEmptySubscriber(observer));
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8 | }
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9 | }
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10 | class IsEmptySubscriber extends Subscriber {
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11 | constructor(destination) {
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12 | super(destination);
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13 | }
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14 | notifyComplete(isEmpty) {
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15 | const destination = this.destination;
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16 | destination.next(isEmpty);
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17 | destination.complete();
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18 | }
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19 | _next(value) {
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20 | this.notifyComplete(false);
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21 | }
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22 | _complete() {
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23 | this.notifyComplete(true);
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24 | }
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25 | }
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26 | //# sourceMappingURL=isEmpty.js.map |
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