/**
 * Path validation utilities to prevent path traversal attacks
 */
/**
 * Validates and normalizes a file path to prevent directory traversal attacks
 *
 * @param filePath - The file path to validate
 * @param baseDirectory - Optional base directory to restrict paths to
 * @returns Normalized absolute path
 * @throws Error if path is invalid or contains traversal sequences
 */
export declare function validateFilePath(filePath: string, baseDirectory?: string): string;
/**
 * Validates that a file path is safe for reading
 *
 * @param filePath - The file path to validate
 * @param allowedExtensions - Optional array of allowed file extensions (e.g., ['.svg', '.png'])
 * @returns Normalized absolute path
 */
export declare function validateReadPath(filePath: string, allowedExtensions?: string[]): string;
/**
 * Validates that a file path is safe for writing
 *
 * @param filePath - The file path to validate
 * @param allowedExtensions - Optional array of allowed file extensions
 * @param baseDirectory - Optional base directory to restrict writes to
 * @returns Normalized absolute path
 */
export declare function validateWritePath(filePath: string, allowedExtensions?: string[], baseDirectory?: string): string;