17 lines
576 B
Plaintext
17 lines
576 B
Plaintext
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();
|
|
}));
|
|
});
|
|
}
|
|
//# sourceMappingURL=defaultIfEmpty.js.map |