(function() {
            const agent = typeof navigator !== 'undefined' ? navigator.userAgent : '';
            const REGEX_MATCH_CLIENT_TYPE = /BNC\/([0-9.]+) \(([a-zA-Z]+) ([0-9.]+)\)/;
            if(REGEX_MATCH_CLIENT_TYPE.test(agent)){
              return null
            }
            function getJSON(str) {
              try {
                return JSON.parse(str)
              } catch (e) {
                return {}
              }