/**
 * FileUtils - File system operations and discovery
 */
export declare class FileUtils {
    private readonly SUPPORTED_EXTENSIONS;
    private readonly IGNORE_DIRECTORIES;
    private readonly IGNORE_FILES;
    /**
     * Discover all supported files in a codebase directory
     */
    discoverFiles(codebasePath: string, supportedLanguages?: string[]): Promise<string[]>;
    /**
     * Recursively traverse directory structure
     */
    private traverseDirectory;
    /**
     * Check if a file should be included based on extension and name
     */
    private shouldIncludeFile;
    /**
     * Get file extensions for specified languages
     */
    private getExtensionsForLanguages;
    /**
     * Get file statistics
     */
    getFileStats(filePath: string): Promise<{
        size: number;
        modified: Date;
        created: Date;
    } | null>;
    /**
     * Check if file has been modified since a given timestamp
     */
    isFileModifiedSince(filePath: string, timestamp: Date): Promise<boolean>;
    /**
     * Get relative path with normalized separators
     */
    getRelativePath(filePath: string, basePath: string): string;
    /**
     * Ensure directory exists
     */
    ensureDirectory(dirPath: string): Promise<void>;
    /**
     * Read file with error handling
     */
    readFileContent(filePath: string): Promise<string | null>;
    /**
     * Write file with directory creation
     */
    writeFileContent(filePath: string, content: string): Promise<boolean>;
    /**
     * Get supported languages for a file extension
     */
    getLanguageForExtension(extension: string): string | null;
    /**
     * Get all supported languages
     */
    getSupportedLanguages(): string[];
}
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