/**
 * Returns the current (or) passed date after formatted with given string
 * @param format - {type: string, mandatory} format to return
 * @param month - {type: string | number, optional, default: 'January') month of year start
 * @param currentDate {type: string | Date, optional, default: new Date()) date to get format
 * @return string
 */
export declare function formatDate(format: string, month?: unknown, currentDate?: Date | string): string;
/**
 * Returns the value and current (or) passed date after formatted with given string
 * @param format - {type: string, mandatory} format to return
 * @param value - {type: string | number, optional} format to return
 * @param size - {type: number, optional, default: 0} format to return
 * @param month - {type: string | number, optional, default: 'January') month of year start
 * @param currentDate {type: string | Date, optional, default: new Date()) date to get format
 * @return string
 */
export declare function formatDocumentNumber(format: string, value?: string | number, size?: number, month?: string | number, currentDate?: Date | string): string;
/**
 * Returns the value and current (or) passed date after formatted with given string
 * @param currentDate {type: string | Date, mandatory) date to get format
 * @param format - {type: string, mandatory} format to return
 * @param value - {type: string | number, optional} format to return
 * @param size - {type: number, optional, default: 0} format to return
 * @param month - {type: string | number, optional, default: 'January') month of year start
 * @return string
 */
export declare function fdnForDate(currentDate: Date | string, format: string, value?: string | number, size?: number, month?: string | number): string;