/**
 * Find package.json by walking up the directory tree from a starting directory
 * @param startDir - Directory to start searching from (defaults to current file's directory)
 * @returns Path to the found package.json file
 * @throws Error if package.json is not found
 */
export declare function findPackageJson(startDir?: string): string;
/**
 * Read and parse package.json from the directory tree
 * @param startDir - Directory to start searching from (defaults to current file's directory)
 * @returns Parsed package.json object
 * @throws Error if package.json is not found or cannot be parsed
 */
export declare function readPackageJson(startDir?: string): any;
/**
 * Get the version from package.json with fallback
 * @param startDir - Directory to start searching from (defaults to current file's directory)
 * @param fallbackVersion - Version to use if package.json cannot be read (defaults to '0.0.0')
 * @returns Version string
 */
export declare function getPackageVersion(startDir?: string, fallbackVersion?: string): string;