export declare function readFile(filePath: string): Promise<string>;
export declare function readFileMaybe(filePath: string): Promise<string | undefined>;
export declare function writeFile(filePath: string, content: string): Promise<void>;
export declare function appendFile(filePath: string, content: string): Promise<void>;
export declare function ensureDirectory(dirPath: string): Promise<void>;
export declare function exists(filePath: string): Promise<boolean>;
export declare function isDirectory(filePath: string): Promise<boolean>;
export declare function listDirectory(dirPath: string): Promise<string[]>;
export declare function deleteFile(filePath: string): Promise<void>;
export declare function readFileSync(filePath: string): string;
export declare function readFileMaybeSync(filePath: string): string | undefined;
export declare function existsSync(filePath: string): boolean;
export declare function ensureDirectorySync(dirPath: string): void;