import { NepaliDate } from './NepaliDate';
/**
 * Format a date using the specified format string
 * @param date - The date to format (Date or NepaliDate)
 * @param formatString - The format string with tokens
 * @returns Formatted date string
 *
 * @example
 * // English date
 * format(new Date(2025, 5, 3), 'yyyy-MM-dd') // '2025-06-03'
 * format(new Date(2025, 5, 3), 'MMMM do, yyyy') // 'June 3rd, 2025'
 *
 * // Nepali date
 * format(new NepaliDate(2082, 2, 20), 'yyyy-MM-dd') // '2082-03-20'
 * format(new NepaliDate(2082, 2, 20), 'MMMM do, yyyy') // 'Aashar 20th, 2082'
 */
export declare function format(date: Date | NepaliDate, formatString: string): string;
/**
 * Format a date as ISO string (yyyy-MM-dd)
 * @param date - The date to format
 * @returns ISO formatted date string
 */
export declare function formatISO(date: Date | NepaliDate): string;
/**
 * Format a date as a long date string (MMMM do, yyyy)
 * @param date - The date to format
 * @returns Long formatted date string
 */
export declare function formatLong(date: Date | NepaliDate): string;
/**
 * Format a date as a short date string (MM/dd/yyyy)
 * @param date - The date to format
 * @returns Short formatted date string
 */
export declare function formatShort(date: Date | NepaliDate): string;
/**
 * Format a date as a medium date string (MMM dd, yyyy)
 * @param date - The date to format
 * @returns Medium formatted date string
 */
export declare function formatMedium(date: Date | NepaliDate): string;