code: function logLevelLabel(logLevel) {
      switch (logLevel) {
          case exports.LOG_EMERGENCY: return 'emergency';
          case exports.LOG_ALERT: return 'alert';
          case exports.LOG_CRITICAL: return 'critical';
          case exports.LOG_ERROR: return 'error';
          case exports.LOG_WARNING: return 'warning';
          case exports.LOG_NOTICE: return 'notice';
          case exports.LOG_INFORMATIONAL: return 'info';
          case exports.LOG_DEBUG: return 'debug';
          default: return '';
      }
  }
docs: Get label by syslog level tag