import { empty } from 'rxjs'; const emptyObservable = empty(); emptyObservable.subscribe({ next: () => console.log('This will not be called'), complete: () => console.log('Completed') });
Completed
import { empty } from 'rxjs'; const emptyObservable = empty(); emptyObservable.pipe( catchError(error => { console.log(`Caught error: ${error}`); return empty(); }) ).subscribe({ next: () => console.log('This will not be called'), complete: () => console.log('Completed') });
CompletedThis example creates an empty observable and pipes it through a `catchError` operator. The `catchError` operator catches any errors that may occur during subscription and returns an empty observable. As a result, when we subscribe to the piped observable, the `complete` callback function will be called immediately without any errors being thrown. Overall, the `empty` operator is useful when we want to create an observable sequence that immediately completes without emitting any values. It can be especially helpful when we need to create a fallback observable to catch errors and prevent them from propagating further.