import type { ArrayToUnion } from "../types/logic/arrayToUnion";
export interface DayList {
    de: ["So", "Mo", "Di", "Mi", "Do", "Fr", "Sa"];
    ko: ["일", "월", "화", "수", "목", "금", "토"];
    en: ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"];
    ja: ["日", "月", "火", "水", "木", "金", "土"];
    fr: ["Dim", "Lun", "Mar", "Mer", "Jeu", "Ven", "Sam"];
}
/**
 * Convert a number to a day of the week in the specified language
 * @param day Number representing the day (0-6, where 0 is Sunday)
 * @param lang Language code ('de', 'ko', 'en', 'ja', 'fr')
 * @returns Day of the week string in the specified language
 * @example
 * getDay(0); // Returns "日" (default is Japanese)
 * getDay(0, "en"); // Returns "Sun"
 * getDay(1, "fr"); // Returns "Lun"
 */
export declare const getDay: <T extends keyof DayList>(day: number, lang?: T) => ArrayToUnion<DayList[T]>;