code: function(file, lint, isError, isWarning, errorLocation) {
          var lintId = (isError) ? colors.bgRed(colors.white(lint.id)) : colors.bgYellow(colors.white(lint.id));
          var message = '';
          if (errorLocation) {
              message = file.path + ':' + (errorLocation.line + 1) + ':' + (errorLocation.column + 1) + ' ' + lintId + ' ' + lint.message;
          } else {
              message = file.path + ': ' + lintId + ' ' + lint.message;
          }
  
          if (isError) {
              log.error(message);
          } else {
              log.warning(message);
          }
      }
docs: Reporter function for linting errors and warnings.
  
  @param file Current file object.
  @param lint Current linting error.
  @param isError True if this is an error.
  @param isWarning True if this is a warning.
  @param errorLocation Error location object.