export type LangType = 'zh_CN' | 'en_US' | 'ru_RU';
export type LocaleType = {
    [K in LangType]: Record<string, string>;
};
export declare const getLang: () => LangType;
/**
 * 设置语言
 * @param lang
 */
export declare const setLang: (langType: LangType) => void;
/**
 * 拓展locale配置
 */
export declare const extendLocale: (extraLocale: LocaleType) => void;
export declare const getLocale: () => LocaleType;
export declare const i18n: (key: string, defaultValue?: string) => string;