How can I handle errors in a ForkJoin operation in RxJS?

How can I handle errors in a ForkJoin operation in RxJS?

In RxJS, you can handle errors in a ForkJoin operation by using the catchError operator within each observable.

Can you show me an example of that?

Sure! Here's a simple example:

import { forkJoin, of } from 'rxjs';
import { catchError } from 'rxjs/operators';

const obs1 = of('Data from observable 1').pipe(catchError(err => of('Error in observable 1')));
const obs2 = of('Data from observable 2').pipe(catchError(err => of('Error in observable 2')));

forkJoin([obs1, obs2]).subscribe(result => {
  console.log(result);
});

What happens if one of the observables fails?

If one of the observables fails and you don't handle the error, the entire ForkJoin will fail. However, with catchError, you can provide a fallback value.