type MonthIndex = 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11;
export declare function generateCalendarMonthMatrix(year: number, month: MonthIndex, firstDay?: 'monday' | 'sunday'): {
    day: number;
    date: string;
}[][];
export {};