How to return observable from subscribe

Question

I\'m trying to return an observable when I get a certain value in a subscriber, but I fail miserably.

This is the code:

canActivate(route: Activated         


        

Answer 1

Couldn't we just use pipe with map from import { map } from 'rxjs/operators';?

import { map } from 'rxjs/operators';

@Injectable({
  providedIn: 'root'
})
export class SearchHostService {
  constructor(private http: HttpClient) { }
  searchForHosts(searchString: string): Observable {
    const res = >this.http.get('./assets/host-users.json');
    const result = res.pipe(
      map(val =>
        val.filter(emp => emp.displayName.toLowerCase().startsWith(searchString))
      ));
    return result;
  }
}