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Last change
on this file was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago |
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initial commit
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516 bytes
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| 1 | import { Observable } from '../Observable';
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| 2 | import { from } from './from';
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| 3 | import { empty } from './empty';
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| 4 | export function defer(observableFactory) {
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| 5 | return new Observable(subscriber => {
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| 6 | let input;
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| 7 | try {
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| 8 | input = observableFactory();
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| 9 | }
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| 10 | catch (err) {
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| 11 | subscriber.error(err);
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| 12 | return undefined;
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| 13 | }
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| 14 | const source = input ? from(input) : empty();
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| 15 | return source.subscribe(subscriber);
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| 16 | });
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| 17 | }
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| 18 | //# sourceMappingURL=defer.js.map |
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