hugoWebsite/node_modules/rxjs/dist/esm/internal/operators/defaultIfEmpty.js

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2022-10-29 00:20:35 +02:00
import { operate } from '../util/lift';
import { createOperatorSubscriber } from './OperatorSubscriber';
export function defaultIfEmpty(defaultValue) {
return operate((source, subscriber) => {
let hasValue = false;
source.subscribe(createOperatorSubscriber(subscriber, (value) => {
hasValue = true;
subscriber.next(value);
}, () => {
if (!hasValue) {
subscriber.next(defaultValue);
}
subscriber.complete();
}));
});
}
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