import { TCalendar } from "../types";
export declare function LocalToUTCDate(date: Date): Date;
export declare function eachDayOfInterval(startDate: Date, endDate: Date): Date[];
export declare function startOfWeek(date: Date, weekStartsOn?: number | undefined): Date;
export declare function endOfWeek(date: Date, weekStartsOn?: number | undefined): Date;
export declare function getAllMonths({ locale, calendar, monthFormat, }: {
    locale: string;
    calendar: TCalendar;
    monthFormat?: "numeric" | "2-digit" | "long" | "short" | "narrow" | undefined;
}): {
    label: string;
    value: number;
}[];
export declare function getWeekDayName(dayNumber: number, { locale, weekdayFormat, }?: {
    locale?: string;
    weekdayFormat?: "long" | "short" | "narrow" | undefined;
}): string;
/**
 * @package https://github.com/date-fns/date-fns
 * @name addDays
 * @category Day Helpers
 * @summary Add the specified number of days to the given date.
 *
 * @description
 * Add the specified number of days to the given date.
 *
 * @typeParam DateType - The `Date` type, the function operates on. Gets inferred from passed arguments. Allows to use extensions like [`UTCDate`](https://github.com/date-fns/utc).
 *
 * @param date - The date to be changed
 * @param amount - The amount of days to be added.
 *
 * @returns The new date with the days added
 *
 * @example
 * // Add 10 days to 1 September 2014:
 * const result = addDays(new Date(2014, 8, 1), 10)
 * //=> Thu Sep 11 2014 00:00:00
 */
export declare function addDays(date: Date | number | string, amount: number): Date;
export declare function subDays<DateType extends Date>(date: DateType | number | string, amount: number): Date;
/**
 * @package https://github.com/date-fns/date-fns
 * @name startOfDay
 * @category Day Helpers
 * @summary Return the start of a day for the given date.
 *
 * @description
 * Return the start of a day for the given date.
 * The result will be in the local timezone.
 *
 * @typeParam DateType - The `Date` type, the function operates on. Gets inferred from passed arguments. Allows to use extensions like [`UTCDate`](https://github.com/date-fns/utc).
 *
 * @param date - The original date
 *
 * @returns The start of a day
 *
 * @example
 * // The start of a day for 2 September 2014 11:55:00:
 * const result = startOfDay(new Date(2014, 8, 2, 11, 55, 0))
 * //=> Tue Sep 02 2014 00:00:00
 */
export declare function startOfDay<DateType extends Date>(date: DateType | number | string): Date;
/**
 * @package https://github.com/date-fns/date-fns
 * @name isSameDay
 * @category Day Helpers
 * @summary Are the given dates in the same day (and year and month)?
 *
 * @description
 * Are the given dates in the same day (and year and month)?
 *
 * @typeParam DateType - The `Date` type, the function operates on. Gets inferred from passed arguments. Allows to use extensions like [`UTCDate`](https://github.com/date-fns/utc).
 *
 * @param dateLeft - The first date to check
 * @param dateRight - The second date to check

 * @returns The dates are in the same day (and year and month)
 *
 * @example
 * // Are 4 September 06:00:00 and 4 September 18:00:00 in the same day?
 * const result = isSameDay(new Date(2014, 8, 4, 6, 0), new Date(2014, 8, 4, 18, 0))
 * //=> true
 *
 * @example
 * // Are 4 September and 4 October in the same day?
 * const result = isSameDay(new Date(2014, 8, 4), new Date(2014, 9, 4))
 * //=> false
 *
 * @example
 * // Are 4 September, 2014 and 4 September, 2015 in the same day?
 * const result = isSameDay(new Date(2014, 8, 4), new Date(2015, 8, 4))
 * //=> false
 */
export declare function isSameDay<DateType extends Date>(dateLeft: DateType | number | string, dateRight: DateType | number | string): boolean;
/**
 * @package https://github.com/date-fns/date-fns
 * @name isToday
 * @category Day Helpers
 * @summary Is the given date today?
 * @pure false
 *
 * @description
 * Is the given date today?
 *
 * @typeParam DateType - The `Date` type, the function operates on. Gets inferred from passed arguments. Allows to use extensions like [`UTCDate`](https://github.com/date-fns/utc).
 *
 * @param date - The date to check
 *
 * @returns The date is today
 *
 * @example
 * // If today is 6 October 2014, is 6 October 14:00:00 today?
 * const result = isToday(new Date(2014, 9, 6, 14, 0))
 * //=> true
 */
export declare function isToday<DateType extends Date>(date: DateType | number | string): boolean;
export interface Interval<DateType extends Date = Date> {
    /** The start of the interval. */
    start: DateType | number | string;
    /** The end of the interval. */
    end: DateType | number | string;
}
/**
 * @package https://github.com/date-fns/date-fns
 * @name isWithinInterval
 * @category Interval Helpers
 * @summary Is the given date within the interval?
 *
 * @description
 * Is the given date within the interval? (Including start and end.)
 *
 * @typeParam DateType - The `Date` type, the function operates on. Gets inferred from passed arguments. Allows to use extensions like [`UTCDate`](https://github.com/date-fns/utc).
 *
 * @param date - The date to check
 * @param interval - The interval to check
 *
 * @returns The date is within the interval
 *
 * @example
 * // For the date within the interval:
 * isWithinInterval(new Date(2014, 0, 3), {
 *   start: new Date(2014, 0, 1),
 *   end: new Date(2014, 0, 7)
 * })
 * //=> true
 *
 * @example
 * // For the date outside of the interval:
 * isWithinInterval(new Date(2014, 0, 10), {
 *   start: new Date(2014, 0, 1),
 *   end: new Date(2014, 0, 7)
 * })
 * //=> false
 *
 * @example
 * // For date equal to interval start:
 * isWithinInterval(date, { start, end: date })
 * // => true
 *
 * @example
 * // For date equal to interval end:
 * isWithinInterval(date, { start: date, end })
 * // => true
 */
export declare function isWithinInterval<DateType extends Date>(date: DateType | number | string, interval: Interval<Date>): boolean;