/**
 * DatePicker Utility Functions
 *
 * Common utility functions for date manipulation and formatting
 * used with the DatePicker component.
 */
/**
 * Get the start of day (00:00:00)
 */
export declare function startOfDay(date: Date): Date;
/**
 * Get the end of day (23:59:59)
 */
export declare function endOfDay(date: Date): Date;
/**
 * Get the start of week (Monday)
 */
export declare function startOfWeek(date: Date): Date;
/**
 * Get the end of week (Sunday)
 */
export declare function endOfWeek(date: Date): Date;
/**
 * Get the start of month
 */
export declare function startOfMonth(date: Date): Date;
/**
 * Get the end of month
 */
export declare function endOfMonth(date: Date): Date;
/**
 * Get the start of year
 */
export declare function startOfYear(date: Date): Date;
/**
 * Get the end of year
 */
export declare function endOfYear(date: Date): Date;
/**
 * Add days to a date
 */
export declare function addDays(date: Date, days: number): Date;
/**
 * Add months to a date
 */
export declare function addMonths(date: Date, months: number): Date;
/**
 * Add years to a date
 */
export declare function addYears(date: Date, years: number): Date;
/**
 * Check if date is today
 */
export declare function isToday(date: Date): boolean;
/**
 * Check if date is in the past
 */
export declare function isPast(date: Date): boolean;
/**
 * Check if date is in the future
 */
export declare function isFuture(date: Date): boolean;
/**
 * Check if date is weekend (Saturday or Sunday)
 */
export declare function isWeekend(date: Date): boolean;
/**
 * Check if date is weekday (Monday to Friday)
 */
export declare function isWeekday(date: Date): boolean;
/**
 * Get the difference in days between two dates
 */
export declare function diffInDays(date1: Date, date2: Date): number;
/**
 * Get the difference in months between two dates
 */
export declare function diffInMonths(date1: Date, date2: Date): number;
/**
 * Get the difference in years between two dates
 */
export declare function diffInYears(date1: Date, date2: Date): number;
/**
 * Format date to string
 */
export declare function formatDate(date: Date, format?: string): string;
/**
 * Parse date string to Date object
 */
export declare function parseDate(dateString: string): Date | null;
/**
 * Get an array of dates between two dates
 */
export declare function getDateRange(startDate: Date, endDate: Date): Date[];
/**
 * Check if a date is within a range
 */
export declare function isDateInRange(date: Date, startDate: Date, endDate: Date): boolean;
/**
 * Get week number of the year
 */
export declare function getWeekNumber(date: Date): number;
/**
 * Get the date from week number
 */
export declare function getDateFromWeekNumber(week: number, year: number): Date;
/**
 * Get business days between two dates (excluding weekends)
 */
export declare function getBusinessDays(startDate: Date, endDate: Date): number;
/**
 * Add business days (excluding weekends)
 */
export declare function addBusinessDays(date: Date, days: number): Date;
/**
 * Common date disable functions for flatpickr
 */
export declare const dateDisableFunctions: {
    disableWeekends: (date: Date) => boolean;
    disableWeekdays: (date: Date) => boolean;
    disablePast: (date: Date) => boolean;
    disableFuture: (date: Date) => boolean;
    disableDaysOfWeek: (days: number[]) => (date: Date) => boolean;
    disableBefore: (beforeDate: Date) => (date: Date) => boolean;
    disableAfter: (afterDate: Date) => (date: Date) => boolean;
    disableRange: (startDate: Date, endDate: Date) => (date: Date) => boolean;
};
/**
 * Common date presets for quick selection
 */
export declare const datePresets: {
    today: () => Date;
    yesterday: () => Date;
    tomorrow: () => Date;
    startOfWeek: () => Date;
    endOfWeek: () => Date;
    startOfMonth: () => Date;
    endOfMonth: () => Date;
    startOfYear: () => Date;
    endOfYear: () => Date;
    lastWeek: () => {
        start: Date;
        end: Date;
    };
    lastMonth: () => {
        start: Date;
        end: Date;
    };
    lastYear: () => {
        start: Date;
        end: Date;
    };
    next30Days: () => {
        start: Date;
        end: Date;
    };
    next90Days: () => {
        start: Date;
        end: Date;
    };
};
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