Interface LeaveStats

interface LeaveStats {
    overview: {
        total: number;
        pending: number;
        approved: number;
        rejected: number;
        cancelled: number;
        totalDays: number;
    };
    byType: { type: string; count: number; days: number }[];
    byStatus: { status: string; count: number }[];
    byMonth: { month: string; count: number; days: number }[];
}