how to use the emptyerror function from the rxjs library in javascript

index.tsx
import { EmptyError } from 'rxjs';
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index.tsx
import { Observable, EmptyError } from 'rxjs';

const observable = new Observable(observer => {
  observer.complete();
});

observable.subscribe({
  error: error => {
    if (error instanceof EmptyError) {
      console.log('Observable completed without emitting any values');
    } else {
      console.log('Other error occurred', error);
    }
  }
});
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