/**
 * Ensures that the directory exists.
 * If the directory structure does not exist, it is created. Like mkdir -p.
 * Requires the `--allow-read` and `--allow-write` flag.
 */
export declare function ensureDir(dir: string): Promise<void>;
/**
 * Ensures that the directory exists.
 * If the directory structure does not exist, it is created. Like mkdir -p.
 * Requires the `--allow-read` and `--allow-write` flag.
 */
export declare function ensureDirSync(dir: string): void;