code: function (files) {
    if (files.length === 1) {
      return { file: files[0] };
    } else {
      var contents = files.map(function (fname) {
        return '@import ' + JSON.stringify(fname) + ';';
      }).join('\n');
  
      return { contents: contents };
    }
  }
docs: Builds `{file}` or `{contents}` (as node-sass expects) from a list of files.