You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
32 lines
1023 B
32 lines
1023 B
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 |
|
* ```ts |
|
* import { fromEvent, timer } from 'rxjs'; |
|
* import { throwIfEmpty, takeUntil } from 'rxjs/operators'; |
|
* |
|
* 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 button was clicked'); }, |
|
* error(err) { console.error(err); } |
|
* }); |
|
* ``` |
|
* |
|
* @param errorFactory A factory function called to produce the |
|
* error to be thrown when the source observable completes without emitting a |
|
* value. |
|
*/ |
|
export declare function throwIfEmpty<T>(errorFactory?: (() => any)): MonoTypeOperatorFunction<T>;
|
|
|