Real-life: finalize() cleanup

After the stream completes, log cleanup with finalize.

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, finalize } = Rx;

const result$ = of('value').pipe(
  finalize(() => console.log('cleanup'))
);

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