code: function firstJson(stream, onEnd) {
  
    first(stream, function (err, data) {
  
      if (err) {
        return onEnd(err);
      }
  
      return parse(data, onEnd);
    });
  }
docs: Get the first item in a stream and parse it for JSON.
  
  @private
  @deprecated
  @static
  @since    0.0.4
  @category Consumers
  
  @param    {Stream}    stream - Stream that will be read for this function.
  @param    {Function}  onEnd  - Callback when the stream has been read completely.
  @returns  {undefined}