/**
 * Get the number of days in the given Date month.
 *
 * @param	date ( Optional ) The date string | milliseconds since UNIX epoch time | Date object. Default: `new Date()`.
 * @returns	The number of days in the given Date month.
 */
declare const daysInMonth: (date?: string | number | Date) => number;
/**
 * Get the day number of the year.
 *
 * @param	date ( Optional ) The date string | milliseconds since UNIX epoch time | Date object. Default: `new Date()`.
 * @returns	The day number of the year.
 */
declare const getDayOfYear: (date?: string | number | Date) => number;
/**
 * Get the ISO 8601 week number of the year.
 *
 * @param	date ( Optional ) The date string | milliseconds since UNIX epoch time | Date object. Default: `new Date()`.
 * @returns	The ISO 8601 week number of the year.
 */
declare const getISOWeekNumber: (date?: string | number | Date) => number;
/**
 * Gets the ISO 8601 numeric representation of the day of the week.
 * Monday = 1, Sunday = 7
 *
 * @param	date The date to get the day for (defaults to today).
 * @returns	The ISO 8601 day of the week.
 */
declare const getISODayOfWeek: (date?: string | number | Date) => number;
/**
 * Check whether the given year is a leap year or not.
 *
 * @param	year The year to check.
 * @returns	Whether the given year is leap or not.
 */
declare const isLeapYear: (year: number) => boolean;
/**
 * Get Ante Meridiem or Post Meridiem based on the given Date time.
 *
 * @param	hours The date hours.
 * @returns	'AM' or 'PM' based on the given hours.
 */
declare const getAmOrPm: (hours: number) => "AM" | "PM";
/**
 * Get Date Swatch Beat.
 *
 * @param	date ( Optional ) The date string | milliseconds since UNIX epoch time | Date object. Default: `new Date()`.
 * @param	places ( Optional ) The fractional digits. Default: `3`.
 * @returns	The Swatch Beat.
 */
declare const getSwatchBeat: (date?: string | number | Date, places?: number) => string;

export { daysInMonth, getAmOrPm, getDayOfYear, getISODayOfWeek, getISOWeekNumber, getSwatchBeat, isLeapYear };