export type DirectorySizeResult = {
    bytes: number;
    files: number;
    directories: number;
};
/**
 * Calculate the total size of a directory recursively.
 */
export declare function getDirectorySize(targetPath: string): Promise<DirectorySizeResult>;
/**
 * Format bytes into a human-readable string.
 */
export declare function formatBytes(bytes: number): string;
/**
 * Check if a path exists.
 */
export declare function pathExists(targetPath: string): Promise<boolean>;