/**
 * get lang from ENV
 *
 * @public
 * @param env - process.env
 * @return - result
 */
export declare function getEnvLang(env?: NodeJS.ProcessEnv): string | undefined;

/**
 * get mac lang
 *
 * @public
 * @return - Promise<string>
 */
export declare function getMacLang(): Promise<string>;

/**
 * get mac lang sync
 *
 * @public
 * @return - string
 */
export declare function getMacLangSync(): string;

export declare function getUnixLang(): Promise<string | undefined>;

export declare function getUnixLangSync(): string | undefined;

/**
 * get windows lang
 *
 * @public
 * @return - string
 */
export declare function getWinLang(): Promise<string | undefined>;

/**
 * get windows lang sync
 *
 * @public
 * @return - string
 */
export declare function getWinLangSync(): string | undefined;

export declare type Lang = 'en-US' | 'zh-CN' | string;

/**
 * osLang
 *
 * @param cwd - the pkg path
 * @returns result - WorkspaceRootResult | null
 */
export declare function osLang(): Promise<string>;

/**
 * osLangSync
 *
 * @returns result - WorkspaceRootResult | null
 */
export declare function osLangSync(): string;

export { }