export interface DateConstraints {
    min?: string;
    max?: string;
    disabledDates?: string[];
}
export interface CalendarDay {
    day: number;
    isCurrentMonth: boolean;
    isToday: boolean;
    date: Date;
}
export declare const createDate: (year: number, month: number, day?: number) => Date;
export declare const parseISODate: (dateString: string) => Date;
export declare const dateToString: (date: Date) => string;
export declare const formatDisplayDate: (dateString: string) => string;
export declare const parseInputDate: (input: string) => string;
export declare const isDateDisabled: (date: Date, constraints: DateConstraints) => boolean;
export declare const isDateSelected: (date: Date, selectedDateString: string) => boolean;
export declare const getCalendarDays: (year: number, month: number) => CalendarDay[];
export declare const generateYearOptions: (minYear?: number, maxYear?: number) => number[];
export declare const findFirstSelectableDateInMonth: (year: number, month: number, constraints: DateConstraints) => Date;
export declare const findLastSelectableDateInMonth: (year: number, month: number, constraints: DateConstraints) => Date;
export declare const getFirstSelectableDate: (constraints: DateConstraints) => Date;
export interface MonthYear {
    month: number;
    year: number;
}
export declare function navigateMonth(currentMonth: number, currentYear: number, direction: 'prev' | 'next'): MonthYear;
export declare function getKeyboardNavigationStep(key: string): 1 | 0 | -1 | 7 | -7;
export declare function getNextSelectableDate(startDate: Date, step: number, constraints: DateConstraints, maxIterations?: number): Date;
export declare function handleDateInputKeyDown(event: KeyboardEvent): void;
export declare const openDatePicker: (selectedDate?: Date | null) => string;
export declare const closeDatePicker: (selectedDate?: Date | null) => string;