Real-life: concatWith() connection statuses

After offline, append online with concatWith.

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, concatWith } = Rx;

const result$ = of('offline').pipe(
  concatWith(of('online'))
);

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