conditional select return wrong type

const registeree = (getCount?: boolean) => {
        return tx
          .select({
            ...(getCount ? { total: count() } : {}),
          })
          .from(eventHasParticipant)
          .innerJoin(events, eq(eventHasParticipant.eventId, events.id))
          .innerJoin(
            participants,
            eq(eventHasParticipant.participantId, participants.id)
          )
          .where(and(eq(events.id, eventID), eq(events.createdBy, createdBy)));
      };

      const total = await registeree(true).limit(limit).offset((page - 1) * limit);
      const registereeResult = await registeree();

      total[0].total = total[0].total || 0;

      return { total: total[0].total, registereeResult };

const registereeResult: {
    total?: number | undefined;
}[]