import type { VegaCountryCode } from '../../types/flag.type';
import type { FormatRule, MetadataJson } from './types';
export declare const META: MetadataJson;
/**
 * Return the calling code string for a given country code.
 *
 * @param {VegaCountryCode} country - the country code to look up
 * @returns {string} the calling code for the given country
 * @example getCountryCallingCode('US') // '1'
 */
export declare function getCountryCallingCode(country: VegaCountryCode): string;
/**
 * Return an array of all supported country codes.
 *
 * @returns {VegaCountryCode[]} an array of supported country codes
 */
export declare function getCountries(): VegaCountryCode[];
/**
 * Get the list of format rules for a country. Returns undefined if none.
 *
 * @param {VegaCountryCode} country - the country code to retrieve formats for
 * @returns {FormatRule[] | undefined} the format rules or undefined
 */
export declare function getFormats(country: VegaCountryCode): FormatRule[] | undefined;
/**
 * Given digits (without leading +), detect which calling code prefix matches.
 *
 * @param {string} digits - the digit string to detect a calling code from
 * @returns {{ countries: string[] | undefined; callingCode: string | undefined }} the matched countries and calling code
 */
export declare function detectCallingCode(digits: string): {
  countries: string[] | undefined;
  callingCode: string | undefined;
};
/**
 * Determine the specific country from a set of countries sharing the same
 * calling code, by checking leading digits patterns and validation patterns.
 *
 * Mirrors getCountryByNationalNumber from the original library.
 *
 * @param {string[]} possibleCountries - the candidate country codes
 * @param {string} nationalNumber - the national number to match against
 * @returns {VegaCountryCode | undefined} the matched country or undefined
 */
export declare function getCountryByNationalNumber(possibleCountries: string[], nationalNumber: string): VegaCountryCode | undefined;