/**
 * Utilities to test whether a given date falls within the current
 * hour, day, week, month or year (local time – domyślnie strefa serwera,
 * np. Europe/Warsaw gdy proces tam działa).
 */
export declare function isThisHour(date: Date, now?: Date): boolean;
export declare function isThisDay(date: Date, now?: Date): boolean;
/**
 * @param weekStartsOn 0 = niedziela, 1 = poniedziałek (domyślnie).
 */
export declare function isThisWeek(date: Date, now?: Date, weekStartsOn?: number): boolean;
export declare function isThisMonth(date: Date, now?: Date): boolean;
export declare function isThisYear(date: Date, now?: Date): boolean;