import { CountryCode } from "libphonenumber-js";
/**
 * @param phoneNumber - a phone number as a string
 * @returns {boolean} true if the phone number starts with a plus sign
 * @example checkIfPhoneNumberHasPlus("123456789") // false
 * checkIfPhoneNumberHasPlus("+123456789") // true
 */
export declare const checkIfPhoneNumberHasPlus: (phoneNumber: string) => boolean;
/**
 * @param phoneNumber - a phone number as a string
 * @returns {string|number} the phone number with a plus sign in front of it
 * @example getPhoneNumberWithPlus("123456789") // "+123456789"
 */
export declare const getPhoneNumberWithPlus: (phoneNumber: string | number | ReadonlyArray<string>) => string;
/**
 * Generates a flag emoji based on the given country code.
 *
 * @param {string} countryCode - The two-letter country code (ISO 3166-1 alpha-2).
 * @returns {string} - The corresponding flag emoji for the given country code.
 * @example getPhoneNumberWithPlus("DK") // "🇩🇰"
 */
export declare const countryCodeToFlagEmoji: (countryCode: string) => string;
/**
 * Retrieves the ISO 3166-1 alpha-2 country code associated with a given international calling code.
 *
 * @param {string} callCode - The international calling code for a country.
 * @returns {string} The abbreviation for a country or an empty string if no matching country is found.
 * @example getCountryAbbreviation("45") // "DK"
 * @example getCountryAbbreviation("+45") // "DK"
 */
export declare const getCountryAbbreviation: (callCode: string) => CountryCode | "";