/**
 * Relative date format.
 *
 * @param	date	The Date to format.
 * @param	locales	The Intl.RelativeTimeFormat locale to use. Defaults to user locale.
 *
 * @link	[Relative Date Internationalization In JavaScript](https://blog.webdevsimplified.com/2020-07/relative-time-format)
 *
 * @usage ```ts
 * const currentDate = new Date()
 *
 * formatRelativeTime( new Date().setMonth( currentDate.getMonth() - 2 ) )
 * // 2 months ago
 * formatRelativeTime( new Date().setDate( currentDate.getDate() - 1 ) )
 * // yesterday
 * formatRelativeTime( new Date().setDate( currentDate.getDate() - 9 ) )
 * // last week
 * ```
 *
 * @returns	The relative time formatted date string.
 */
declare const formatRelativeTime: (date?: string | number | Date, locales?: string | string[], options?: Intl.RelativeTimeFormatOptions) => string | undefined;

export { formatRelativeTime };