Help with Using Schedule Policies for Retrying with Intervals

  const MAX_ATTEMPTS = 30;
  const INTERVAL_MS = 1000;
  const policy = Schedule.intersect(
    Schedule.untilInput((purchaseExists: boolean) => purchaseExists),
    Schedule.recurs(MAX_ATTEMPTS),
    Schedule.fixed(INTERVAL_MS),
  );
  const program = pipe(
    // checking if purchase data exists
    checkPurchaseExists(purchaseId),
    // retrying 30 times with 1000ms interval if can't be found
    E.retry(policy),
  );