RxJS - Creation Operator throwError

This operator will create an observable that will notify an error.

Syntax

throwError(error: any): Observable

Parameters

error − The argument the operator takes in is the error that you need to notify.

Return value

It returns an observable that will notify an error.

Example

import { throwError, concat, of } from 'rxjs';

const result =throwError(new Error('error occurred'));
result.subscribe(x => console.log(x), e => console.error(e));

Output