/**
 * Reads and parses a JSON file.
 * Throws an error if the file content is not valid JSON.
 * @param {string} filePath
 * @returns {Promise<any>}
 */
export declare function readJsonFileAsync(filePath: string): Promise<any>;
/**
 * Saves an object as JSON to a file.
 * Automatically creates the directory if it does not exist.
 * @param {string} filePath
 * @param {any} data
 * @param {number} [spaces=2]
 * @returns {Promise<void>}
 */
export declare function writeJsonFileAsync(filePath: string, data: any, spaces?: number): Promise<void>;
/**
 * Clears all contents inside a directory but keeps the directory.
 * @param {string} dirPath
 */
export declare function clearDirectoryAsync(dirPath: string): Promise<void>;
/**
 * Checks whether a directory is empty.
 * @param {string} dirPath
 * @returns {Promise<boolean>}
 */
export declare function isDirEmptyAsync(dirPath: string): Promise<boolean>;
/**
 * Copies a file to a destination.
 * @param {string} src
 * @param {string} dest
 * @param {number} [mode]
 * @returns {Promise<void>}
 */
export declare function ensureCopyFileAsync(src: string, dest: string, mode?: number): Promise<void>;
/**
 * Deletes a file (If the file exists).
 * @param {string} filePath
 * @returns {Promise<boolean>}
 */
export declare function tryDeleteFileAsync(filePath: string): Promise<boolean>;
/**
 * Writes text to a file (Ensures that the directory exists, creating it recursively if needed).
 * @param {string} filePath
 * @param {string} content
 * @param {import('fs').WriteFileOptions} [ops='utf-8']
 * @returns {Promise<void>}
 */
export declare function writeTextFileAsync(filePath: string, content: string, ops?: import('fs').WriteFileOptions): Promise<void>;
/**
 * Lists all files and dirs in a directory (optionally recursive).
 * @param {string} dirPath
 * @param {boolean} [recursive=false]
 * @returns {Promise<{ files: string[]; dirs: string[] }>}
 */
export declare function listFilesAsync(dirPath: string, recursive?: boolean): Promise<{
    files: string[];
    dirs: string[];
}>;
/**
 * Lists all directories in a directory (optionally recursive).
 * @param {string} dirPath
 * @param {boolean} [recursive=false]
 * @returns {Promise<string[]>}
 */
export declare function listDirsAsync(dirPath: string, recursive?: boolean): Promise<string[]>;
/**
 * Returns the size of a file in bytes.
 * @param {string} filePath
 * @returns {Promise<number>}
 */
export declare function fileSizeAsync(filePath: string): Promise<number>;
/**
 * Returns the total size of a directory in bytes.
 * @param {string} dirPath
 * @returns {Promise<number>}
 */
export declare function dirSizeAsync(dirPath: string): Promise<number>;
/**
 * Restores the most recent backup of a file.
 * @param {string} filePath
 * @param {string} [ext='bak']
 * @returns {Promise<void>}
 */
export declare function restoreLatestBackupAsync(filePath: string, ext?: string): Promise<void>;
/**
 * Creates a backup copy of a file with .bak timestamp suffix.
 * @param {string} filePath
 * @param {string} [ext='bak']
 * @returns {Promise<void>}
 */
export declare function backupFileAsync(filePath: string, ext?: string): Promise<void>;
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