/**
 * Converts a numeric value to Greek words.
 *
 * @param {number | string | bigint} value - The numeric value to convert
 * @returns {string} The number in Greek words
 * @throws {TypeError} If value is not a valid numeric type
 * @throws {Error} If value is not a valid number format
 *
 * @example
 * toCardinal(21)       // 'είκοσι ένα'
 * toCardinal(1000)     // 'χίλια'
 * toCardinal('3.14')   // 'τρία κόμμα ένα τέσσερα'
 */
export function toCardinal(value: number | string | bigint): string;
/**
 * Converts a numeric value to Greek ordinal words.
 *
 * @param {number | string | bigint} value - The numeric value to convert
 * @returns {string} The ordinal in Greek words
 * @throws {TypeError} If value is not a valid numeric type
 * @throws {Error} If value is not a positive integer
 *
 * @example
 * toOrdinal(1)   // 'πρώτος'
 * toOrdinal(21)  // 'εικοστός πρώτος'
 */
export function toOrdinal(value: number | string | bigint): string;
/**
 * Converts a numeric value to Greek Euro currency words.
 *
 * @param {number | string | bigint} value - The numeric value to convert
 * @returns {string} The currency in Greek words
 * @throws {TypeError} If value is not a valid numeric type
 * @throws {Error} If value is not a valid number format
 *
 * @example
 * toCurrency(1)     // 'ένα ευρώ'
 * toCurrency(2.50)  // 'δύο ευρώ πενήντα λεπτά'
 */
export function toCurrency(value: number | string | bigint): string;