declare class BnDateUtils {
    /**
     * Check if a value is a valid Date object
     */
    static isValidDate(value: unknown): value is Date;
    /**
     * Format a date to a string using locale options
     */
    static formatDate(date: Date, locale?: string, options?: Intl.DateTimeFormatOptions): string;
    /**
     * Format a date to ISO string (YYYY-MM-DD)
     */
    static formatToIsoDate(date: Date): string;
    /**
     * Format time to HH:MM:SS
     */
    static formatTime(date: Date): string;
    /**
     * Add days to a date
     */
    static addDays(date: Date, days: number): Date;
    /**
     * Add months to a date
     */
    static addMonths(date: Date, months: number): Date;
    /**
     * Add years to a date
     */
    static addYears(date: Date, years: number): Date;
    /**
     * Get the difference between two dates in days
     */
    static getDaysDifference(date1: Date, date2: Date): number;
    /**
     * Check if a date is today
     */
    static isToday(date: Date): boolean;
    /**
     * Check if a date is in the past
     */
    static isPast(date: Date): boolean;
    /**
     * Check if a date is in the future
     */
    static isFuture(date: Date): boolean;
    /**
     * Get the start of day (00:00:00)
     */
    static startOfDay(date: Date): Date;
    /**
     * Get the end of day (23:59:59.999)
     */
    static endOfDay(date: Date): Date;
    /**
     * Check if two dates are on the same day
     */
    static isSameDay(date1: Date, date2: Date): boolean;
    /**
     * Parse a date string in various formats
     */
    static parseDate(dateString: string): Date | null;
    /**
     * Get relative time string (e.g., "vor 2 Tagen", "in 3 Stunden")
     */
    static getRelativeTime(date: Date, locale?: string): string;
}

export { BnDateUtils };