code: function normalize(filepath) {
  
      // resolve to an absolute ppath
      if (!path.isAbsolute || !path.isAbsolute(filepath))
          filepath = path.resolve(path.dirname(module.parent.filename), filepath);
  
      // tack .json on the end if need be
      if (!/\.json$/.test(filepath))
          filepath = filepath + '.json';
  
      return filepath;
  }
docs: clean up paths for convenient loading