Real-life: mergeMap() loading details

For each id, call loadUser(id) and merge the results.

1. Solve the task in the editor — no long theory.
2. Run the check and compare your output with the expected result.
3. Stuck? Open the solution and carry the approach into your own code.

const { from, of, mergeMap } = Rx;

const loadUser = id => of('user-' + id);

const result$ = from([1, 2]).pipe(
  mergeMap(id => loadUser(id))
);

result$.subscribe(value => console.log(value));