Interview: connect() shared source

Use connect to process a shared source inside the selector.

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, connect, reduce } = Rx;

const result$ = of(1, 2).pipe(
  connect(shared$ => shared$.pipe(reduce((sum, value) => sum + value, 0)))
);

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