import { Country, SearchOptions } from './types';
/**
 * Get country information by 2-letter ISO code
 * @param code - ISO 3166-1 alpha-2 code (e.g., "US", "GB", "CN")
 * @returns Country object or null if not found
 * @example
 * ```ts
 * const country = getCountryByCode2("US");
 * // Returns: { name: "UnitedStates", code2: "US", code3: "USA", ... }
 * ```
 */
export declare function getCountryByCode2(code: string): Country | null;
/**
 * Get country information by 3-letter ISO code
 * @param code - ISO 3166-1 alpha-3 code (e.g., "USA", "GBR", "CHN")
 * @returns Country object or null if not found
 * @example
 * ```ts
 * const country = getCountryByCode3("USA");
 * // Returns: { name: "UnitedStates", code2: "US", code3: "USA", ... }
 * ```
 */
export declare function getCountryByCode3(code: string): Country | null;
/**
 * Get country information by name
 * @param name - Country name (e.g., "UnitedStates", "United States")
 * @returns Country object or null if not found
 * @example
 * ```ts
 * const country = getCountryByName("UnitedStates");
 * // Returns: { name: "UnitedStates", code2: "US", code3: "USA", ... }
 * ```
 */
export declare function getCountryByName(name: string): Country | null;
/**
 * Get all countries that use a specific currency
 * @param currencyCode - ISO 4217 currency code (e.g., "USD", "EUR")
 * @returns Array of countries using the currency
 * @example
 * ```ts
 * const countries = getCountriesByCurrency("EUR");
 * // Returns array of European countries using Euro
 * ```
 */
export declare function getCountriesByCurrency(currencyCode: string): Country[];
/**
 * Get all countries with a specific calling code
 * @param callingCode - International calling code (e.g., "+1", "+44")
 * @returns Array of countries with the calling code
 * @example
 * ```ts
 * const countries = getCountriesByCallingCode("+1");
 * // Returns: [USA, Canada, and other +1 countries]
 * ```
 */
export declare function getCountriesByCallingCode(callingCode: string): Country[];
/**
 * Search countries by name (supports partial matching)
 * @param query - Search query
 * @param options - Search options
 * @returns Array of matching countries
 * @example
 * ```ts
 * const results = searchCountries("united");
 * // Returns: [UnitedStates, UnitedKingdom, UnitedArabEmirates]
 * ```
 */
export declare function searchCountries(countryName: string, options?: SearchOptions): Country[];
/**
 * Convert between 2-letter and 3-letter country codes
 * @param code - Country code to convert
 * @param targetFormat - Target format ('code2' or 'code3')
 * @returns Converted code or null if not found
 * @example
 * ```ts
 * convertCountryCode("US", "code3"); // Returns: "USA"
 * convertCountryCode("GBR", "code2"); // Returns: "GB"
 * ```
 */
export declare function convertCountryCode(code: string, targetFormat: 'code2' | 'code3'): string | null;
/**
 * Get calling code for a country
 * @param countryIdentifier - Country name, code2, or code3
 * @returns Calling code or null if not found
 * @example
 * ```ts
 * getCallingCode("US"); // Returns: "+1"
 * getCallingCode("UnitedStates"); // Returns: "+1"
 * ```
 */
export declare function getCallingCode(countryIdentifier: string): string | null;
/**
 * Get currency code for a country
 * @param countryIdentifier - Country name, code2, or code3
 * @returns Currency code or null if not found
 * @example
 * ```ts
 * getCurrencyCode("US"); // Returns: "USD"
 * getCurrencyCode("Germany"); // Returns: "EUR"
 * ```
 */
export declare function getCurrencyCode(countryIdentifier: string): string | null;
/**
 * Get currency symbol for a country
 * @param countryIdentifier - Country name, code2, or code3
 * @returns Currency symbol or null if not found
 * @example
 * ```ts
 * getCurrencySymbol("US"); // Returns: "$"
 * getCurrencySymbol("Japan"); // Returns: "¥"
 * ```
 */
export declare function getCurrencySymbol(countryIdentifier: string): string | null;
/**
 * Get all unique currencies used worldwide
 * @returns Array of unique currency codes
 */
export declare function getAllCurrencies(): string[];
/**
 * Get all unique calling codes
 * @returns Array of unique calling codes
 */
export declare function getAllCallingCodes(): string[];