code: function(file, enc, callback) {
              var report = file.phpcsReport || {};
  
              if (report.error) {
                  phpcsError = true;
  
                  if (options.failOnFirst) {
                      var errorMessage = 'PHP Code Sniffer failed' +
                          ' on ' + chalk.magenta(file.path);
  
                      this.emit('error', new gutil.PluginError('gulp-phpcs', errorMessage));
                      callback();
  
                      return;
                  }  else {
                      badFiles.push(chalk.magenta(file.path));
                  }
              }
  
              this.push(file);
              callback();
          }
docs: Watch for errors