/**
 * APPDATA environment variable.
 * Points to the Application Data directory on Windows.
 */
export declare function getAppdata(): string | undefined;
/**
 * LOCALAPPDATA environment variable.
 * Points to the Local Application Data directory on Windows.
 */
export declare function getLocalappdata(): string | undefined;
/**
 * USERPROFILE environment variable.
 * Windows user home directory path.
 */
export declare function getUserprofile(): string | undefined;
/**
 * COMSPEC environment variable.
 * Points to the Windows command processor (typically cmd.exe).
 */
export declare function getComspec(): string | undefined;
