code: def get_version(path) -> str:
      
      if path and os.path.exists(path):
          with open(path) as pkg:
              package_dict = json.load(pkg)
              version = package_dict.get('version')
      else:
          version = 'not available'
      return version
docs: Reads the version field from a package file
  
      :param path: the path to a valid package.json file
      :return: the version string or "unknown"