/**
 * Gets the size of a file in bytes
 * @param filePath Path to the file
 * @returns Promise that resolves to the file size in bytes
 */
export declare function getFileSize(filePath: string): Promise<number>;
/**
 * Formats bytes into a human-readable string
 * @param bytes Number of bytes
 * @returns Formatted string with appropriate unit (B, KB, MB, GB, TB)
 */
export declare function formatBytes(bytes: number): string;
/**
 * Calculates an optimal chunk size for file processing
 * @param totalBytes Total size of files to process
 * @returns Optimal chunk size in bytes
 */
export declare function calculateOptimalChunkSize(totalBytes: number): number;
/**
 * Gets all JSON files from a directory
 * @param directory Path to the directory
 * @returns Array of JSON file paths
 */
export declare function getJsonFilesFromDirectory(directory: string): Promise<string[]>;
/**
 * Expands glob patterns to get matching files
 * @param patterns Array of glob patterns
 * @returns Array of matching file paths
 */
export declare function expandGlobPatterns(patterns: string[]): Promise<string[]>;