Interview: materialize() events as data

Turn next/complete into a Notification and output the kind.

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 { of, materialize, map } = Rx;

const result$ = of('data').pipe(
  materialize(),
  map(notification => notification.kind)
);

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