39 lines
1.2 KiB
Plaintext
39 lines
1.2 KiB
Plaintext
import { MonoTypeOperatorFunction } from '../types';
|
|
/**
|
|
* If the source observable completes without emitting a value, it will emit
|
|
* an error. The error will be created at that time by the optional
|
|
* `errorFactory` argument, otherwise, the error will be {@link EmptyError}.
|
|
*
|
|
* 
|
|
*
|
|
* ## Example
|
|
*
|
|
* Throw an error if the document wasn't clicked within 1 second
|
|
*
|
|
* ```ts
|
|
* import { fromEvent, takeUntil, timer, throwIfEmpty } from 'rxjs';
|
|
*
|
|
* const click$ = fromEvent(document, 'click');
|
|
*
|
|
* click$.pipe(
|
|
* takeUntil(timer(1000)),
|
|
* throwIfEmpty(() => new Error('The document was not clicked within 1 second'))
|
|
* )
|
|
* .subscribe({
|
|
* next() {
|
|
* console.log('The document was clicked');
|
|
* },
|
|
* error(err) {
|
|
* console.error(err.message);
|
|
* }
|
|
* });
|
|
* ```
|
|
*
|
|
* @param errorFactory A factory function called to produce the
|
|
* error to be thrown when the source observable completes without emitting a
|
|
* value.
|
|
* @return A function that returns an Observable that throws an error if the
|
|
* source Observable completed without emitting.
|
|
*/
|
|
export declare function throwIfEmpty<T>(errorFactory?: () => any): MonoTypeOperatorFunction<T>;
|
|
//# sourceMappingURL=throwIfEmpty.d.ts.map |