import { Country, CountryStats, RegionInfo, CurrencyInfo, LanguageInfo } from './country.interface';
export declare const getByCodeArea: (region: string) => Country[];
export declare const getByCode: (code: string) => Country | undefined;
export declare const getByAlpha2: (alpha2: string) => Country | undefined;
export declare const getByAlpha3: (alpha3: string) => Country | undefined;
export declare const getByCountry: (countryName: string) => Country | undefined;
export declare const getByCurrency: (currencyCode: string) => Country[];
export declare const getByLanguage: (languageCode: string) => Country[];
export declare const getByCountryCode: (countryCode: string) => Country | undefined;
export declare const listCountries: () => Country[];
export declare const searchCountries: (query: string, fields?: (keyof Country)[]) => Country[];
export declare const getByMultipleCodes: (codes: string[]) => Country[];
export declare const getByCurrencySymbol: (symbol: string) => Country[];
export declare const getRegions: () => string[];
export declare const getCountriesByRegions: (regions: string[]) => Country[];
export declare const getRegionStats: () => {
    region: string;
    count: number;
}[];
export declare const getCurrencies: () => Array<{
    code: string;
    label: string;
    symbol: string | null;
}>;
export declare const getCountriesUsingCurrency: (currencyCode: string) => number;
export declare const getLanguages: () => Array<{
    code: string;
    label: string;
}>;
export declare const getCountriesByLanguages: (languageCodes: string[]) => Country[];
export declare const isValidCountryCode: (code: string) => boolean;
export declare const isValidCurrencyCode: (code: string) => boolean;
export declare const isValidPhoneCode: (phoneCode: string) => boolean;
export declare const formatCountryName: (code: string, format?: 'full' | 'short') => string | undefined;
export declare const formatPhoneNumber: (phoneNumber: string, countryCode: string) => string | undefined;
export declare const compareCountries: (code1: string, code2: string) => {
    sameRegion: boolean;
    sameCurrency: boolean;
    sameLanguage: boolean;
} | undefined;
export declare const getNeighboringCountries: (code: string) => Country[];
export declare const sortCountriesBy: (field: keyof Country | 'currency.code' | 'language.code', order?: 'asc' | 'desc') => Country[];
export declare const getRandomCountry: () => Country;
export declare const getRandomCountries: (count: number) => Country[];
export declare const getFlagUrl: (code: string, size?: '48x36' | '96x72' | '192x144') => string | undefined;
export declare const getCapitals: () => Array<{
    country: string;
    capital: string;
}>;
export declare const getCountryByCapital: (capital: string) => Country | undefined;
export declare const getByIsoCode: (isoCode: string) => Country | undefined;
export declare const getIsoCodeMapping: () => {
    [key: string]: string;
};
export interface SearchFilters {
    regions?: string[];
    currencies?: string[];
    languages?: string[];
    minPopulation?: number;
    maxPopulation?: number;
    minArea?: number;
    maxArea?: number;
}
export declare const searchCountriesAdvanced: (query: string, filters?: SearchFilters) => Country[];
export declare const getCountriesInTimezone: (timezone: string) => Country[];
export declare const getCountriesByCoordinates: (lat: number, lng: number, radiusKm: number) => Country[];
export declare const getDistanceBetweenCountries: (code1: string, code2: string) => number | undefined;
export declare const getBorderingCountries: (code: string) => Country[];
export declare const areBorderingCountries: (code1: string, code2: string) => boolean;
export declare const getMostPopulousCountries: (limit?: number) => Country[];
export declare const getLeastPopulousCountries: (limit?: number) => Country[];
export declare const getLargestCountries: (limit?: number) => Country[];
export declare const getSmallestCountries: (limit?: number) => Country[];
export declare const getPopulationDensity: (code: string) => number | undefined;
export declare const getCountryStatistics: () => CountryStats;
export declare const getByDemonym: (demonym: string) => Country | undefined;
export declare const getDemonyms: () => Array<{
    country: string;
    demonym: string;
}>;
export declare const getByNativeName: (nativeName: string) => Country | undefined;
export declare const getNativeNames: () => Array<{
    country: string;
    nativeName: string;
}>;
export declare const getSubregions: () => string[];
export declare const getCountriesBySubregion: (subregion: string) => Country[];
export declare const exportCountriesToCSV: () => string;
export declare const exportCountriesToJSON: (pretty?: boolean) => string;
export declare const getCountriesBatch: (codes: string[]) => (Country | undefined)[];
export declare const validateCountryCodes: (codes: string[]) => {
    valid: string[];
    invalid: string[];
};
export declare const getRegionName: (regionCode: string) => string;
export declare const getRegionsWithNames: () => RegionInfo[];
export declare const getCurrencyDetails: (currencyCode: string) => CurrencyInfo | undefined;
export declare const getLanguageDetails: (languageCode: string) => LanguageInfo | undefined;