/**
 * Converts a numeric value to Lithuanian words.
 *
 * @param {number | string | bigint} value - The numeric value to convert
 * @param {Object} [options] - Conversion options
 * @param {string} [options.gender='masculine'] - Gender for numbers < 1000
 * @returns {string} The number in Lithuanian words
 * @throws {TypeError} If value is not a valid numeric type
 * @throws {Error} If value is not a valid number format
 *
 * @example
 * toCardinal(42)                          // 'keturiasdešimt du'
 * toCardinal(1, { gender: 'feminine' })   // 'viena'
 * toCardinal(1000000)                     // 'vienas milijonas'
 */
export function toCardinal(value: number | string | bigint, options?: {
    gender?: string | undefined;
}): string;
/**
 * Converts a numeric value to Lithuanian ordinal words (masculine nominative).
 *
 * @param {number | string | bigint} value - The numeric value to convert (must be a positive integer)
 * @returns {string} The number as ordinal words
 * @throws {TypeError} If value is not a valid numeric type
 * @throws {RangeError} If value is negative, zero, or has a decimal part
 *
 * @example
 * toOrdinal(1)    // 'pirmas'
 * toOrdinal(2)    // 'antras'
 * toOrdinal(21)   // 'dvidešimt pirmas'
 * toOrdinal(100)  // 'šimtasis'
 * toOrdinal(1000) // 'tūkstantasis'
 */
export function toOrdinal(value: number | string | bigint): string;
/**
 * Converts a numeric value to Lithuanian currency words (Euro).
 *
 * @param {number | string | bigint} value - The currency amount to convert
 * @returns {string} The amount in Lithuanian currency words
 * @throws {TypeError} If value is not a valid numeric type
 * @throws {Error} If value is not a valid number format
 *
 * @example
 * toCurrency(42)     // 'keturiasdešimt du eurai'
 * toCurrency(1)      // 'vienas euras'
 * toCurrency(1.50)   // 'vienas euras penkiasdešimt centų'
 * toCurrency(-5)     // 'minus penki eurai'
 */
export function toCurrency(value: number | string | bigint): string;