Real-life: distinctUntilChanged() for statuses

Remove consecutive duplicate statuses, but keep the repeated idle after success.

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, distinctUntilChanged } = Rx;

const statuses = ['idle', 'idle', 'loading', 'loading', 'success', 'idle'];

const result$ = from(statuses).pipe(
  distinctUntilChanged()
);

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