export declare function getCountries(): string[];
export declare function getLanguages(): string[];
export declare function getLanguageData(lang: string): LanguageData;
export declare function saveLanguageData(lang: string, data: LanguageData): void;
export declare type LanguageData = {
    [country: string]: CountryName[];
};
export declare type CountryName = {
    name: string;
    type: CountryNameType;
};
export declare enum CountryNameType {
    OFFICIAL = "O",
    COMMON = "C",
    ATONIC = "A",
    SYNONYM = "S",
    VARIANT = "V",
    CAPITAL = "P"
}
export declare function seriesPromise<T>(arr: T[], iteratorFn: (item: T) => Promise<any>): Promise<any>;
export declare function uniq<T>(items: T[]): T[];
export declare function uniqProp<T>(items: T[], prop: keyof T): T[];
export declare function delay(ms: number): Promise<{}>;