import { NicGender, NicType } from './lib/types';
/**
 * Represents a birthday with year, month, and date.
 */
declare class Birthday {
    readonly year: number;
    readonly month: number;
    readonly date: number;
    /**
     * Creates a new instance of the Birthday class.
     * @param year - The year of the birthday.
     * @param month - The month of the birthday.
     * @param date - The date of the birthday.
     */
    constructor(year: number, month: number, date: number);
    /**
     * Returns a string representation of the birthday in the format "YYYY/MM/DD".
     * @returns The string representation of the birthday.
     */
    toString(): string;
    /**
     * Returns a Date object representing the birthday.
     * @returns The Date object representing the birthday.
     */
    toDate(): Date;
}
/**
 * Represents a NIC (National Identity Card) number.
 */
export default class NIC {
    private readonly nic;
    /**
     * Creates a new instance of the NIC class.
     * @param nic - The NIC number as a string.
     * @throws {TypeError} If the provided NIC is not a string.
     */
    constructor(nic: string);
    /**
     * Checks if the NIC number is valid.
     * @returns {boolean} True if the NIC number is valid, false otherwise.
     */
    get isValid(): boolean;
    /**
     * Gets the type of the NIC number.
     * @returns {NicType} The type of the NIC number.
     * @throws {Error} If the NIC number is invalid.
     */
    get type(): NicType;
    /**
     * Gets the gender associated with the NIC number.
     * @returns {NicGender} The gender associated with the NIC number.
     * @throws {Error} If the NIC number is invalid.
     */
    get gender(): NicGender;
    /**
     * Gets the birthday associated with the NIC number.
     * @returns {Birthday} The birthday associated with the NIC number.
     * @throws {Error} If the NIC number is invalid.
     */
    get birthday(): Birthday;
    /**
     * Formats the NIC number to the specified target type.
     * @param targetType - The target type to format the NIC number to. Defaults to the current type.
     * @returns {string} The formatted NIC number.
     * @throws {TypeError} If the targetType is not a string or is not 'OLD' or 'NEW'.
     * @throws {Error} If the targetType is 'OLD' and the NIC number is not valid for an old NIC.
     */
    format(targetType?: NicType): string;
}
export {};