import { TZDate } from '@date-fns/tz';
declare global {
    interface Window {
        pktTz: string;
    }
}
/**
 * Returns the current date in the specified timezone, with time set to 00:00:00
 * @param tz - Timezone string (default: window.pktTz)
 * @returns Date object representing today's date in the specified timezone
 */
export declare const todayInTz: (tz?: string) => Date;
/**
 * Parses an ISO date string and returns a Date object.
 * Handles "YYYY-MM-DD", "YYYY-MM", and "YYYY" formats as local dates.
 * @param date - The ISO date string to parse
 * @returns A Date object
 */
export declare function parseISODateString(date: string | null | undefined): Date;
/**
 * Formats a Date or TZDate object to an ISO date string (YYYY-MM-DD).
 * Uses local time, not UTC.
 * @param date - The Date or TZDate object to format
 * @returns An ISO date string
 */
export declare const formatISODate: (date: Date | TZDate) => string;
/**
 * Converts an ISO date string to a Date object
 * @param date - The ISO date string to convert
 * @returns A Date object or null if invalid
 */
export declare const fromISOToDate: (date: string | null) => Date | null;
/**
 * Converts an ISO date string to a formatted date string
 * @param date - The ISO date string to convert
 * @param dateformat - The desired date format
 * @returns A formatted date string
 */
export declare const fromISOtoLocal: (date: string, dateformat: string) => string;
/**
 * Creates a new Date object based on the provided date string or Date object.
 * Optionally sets the time to the start or end of the day.
 * @param date - The date string or Date object
 * @param timeOfDay - 'start' to set time to 00:00:00, 'end' to set time to 23:59:59
 * @returns A Date object
 */
export declare const newDate: (date?: string | Date, timeOfDay?: "start" | "end") => Date;
/**
 * Creates a new Date object based on the provided year, month, and day.
 * If the inputs are invalid, returns the current date.
 * @param year - The year
 * @param month - The month (0-11)
 * @param day - The day of the month (default: 1)
 * @returns A Date object
 */
export declare const newDateYMD: (year: number, month: number, day?: number) => Date;
/**
 * Creates a new Date object based on the provided date string or Date object.
 * Sets the time to noon (12:00:00) to avoid timezone issues.
 * @param date - The date string or Date object
 * @returns A Date object with time set to noon
 */
export declare const newDateFromDate: (date: Date | TZDate | number) => Date;
export declare const formatReadableDate: (date: Date | TZDate) => string;
/**
 * Validates if a date is within the specified range
 * @param date - The date to validate
 * @param min - The minimum date (ISO string)
 * @param max - The maximum date (ISO string)
 * @returns boolean indicating if the date is in range
 */
export declare const isDateInRange: (date: Date, min?: string | null, max?: string | null) => boolean;
/**
 * Checks if a date is in the list of excluded dates
 * @param date - The date to check
 * @param excludedDates - Array of excluded date strings (ISO format)
 * @returns boolean indicating if the date is excluded
 */
export declare const isDateExcluded: (date: Date, excludedDates: string[]) => boolean;
/**
 * Checks if a date's weekday is excluded
 * @param date - The date to check
 * @param excludedWeekdays - Array of excluded weekdays (0 = Sunday, 1 = Monday, etc.)
 * @returns boolean indicating if the weekday is excluded
 */
export declare const isWeekdayExcluded: (date: Date, excludedWeekdays: string[]) => boolean;
/**
 * Validates if a date can be selected based on all constraints
 * @param date - The date to validate
 * @param min - The minimum date (ISO string)
 * @param max - The maximum date (ISO string)
 * @param excludedDates - Array of excluded date strings (ISO format)
 * @param excludedWeekdays - Array of excluded weekdays (0 = Sunday, 1 = Monday, etc.)
 * @returns boolean indicating if the date is selectable
 */
export declare const isDateSelectable: (date: Date, min?: string | null, max?: string | null, excludedDates?: string[], excludedWeekdays?: string[]) => boolean;
/**
 * Filters an array of date strings to only include selectable dates
 * @param dates - Array of date strings (ISO format)
 * @param min - The minimum date (ISO string)
 * @param max - The maximum date (ISO string)
 * @param excludedDates - Array of excluded date strings (ISO format)
 * @param excludedWeekdays - Array of excluded weekdays (0 = Sunday, 1 = Monday, etc.)
 * @returns Array of selectable date strings
 */
export declare const filterSelectableDates: (dates: string[], min?: string | null, max?: string | null, excludedDates?: string[], excludedWeekdays?: string[]) => string[];
/**
 * Sorts an array of ISO date strings chronologically
 * @param dates - Array of date strings (ISO format)
 * @returns Sorted array of date strings
 */
export declare const sortDateStrings: (dates: string[]) => string[];
/**
 * Validates a date range (start should be before or equal to end)
 * @param startDate - The start date (ISO string)
 * @param endDate - The end date (ISO string)
 * @returns boolean indicating if the date range is valid
 */
export declare const isValidDateRange: (startDate: string, endDate: string) => boolean;
declare const _default: {
    todayInTz: (tz?: string) => Date;
    parseISODateString: typeof parseISODateString;
    formatISODate: (date: Date | TZDate) => string;
    fromISOToDate: (date: string | null) => Date | null;
    fromISOtoLocal: (date: string, dateformat: string) => string;
    newDate: (date?: string | Date, timeOfDay?: "start" | "end") => Date;
    newDateYMD: (year: number, month: number, day?: number) => Date;
    newDateFromDate: (date: Date | TZDate | number) => Date;
    formatReadableDate: (date: Date | TZDate) => string;
    isDateInRange: (date: Date, min?: string | null, max?: string | null) => boolean;
    isDateExcluded: (date: Date, excludedDates: string[]) => boolean;
    isWeekdayExcluded: (date: Date, excludedWeekdays: string[]) => boolean;
    isDateSelectable: (date: Date, min?: string | null, max?: string | null, excludedDates?: string[], excludedWeekdays?: string[]) => boolean;
    filterSelectableDates: (dates: string[], min?: string | null, max?: string | null, excludedDates?: string[], excludedWeekdays?: string[]) => string[];
    sortDateStrings: (dates: string[]) => string[];
    isValidDateRange: (startDate: string, endDate: string) => boolean;
};
export default _default;