code: function configFromString(config) {
          var matched = aspNetJsonRegex.exec(config._i);
  
          if (matched !== null) {
              config._d = new Date(+matched[1]);
              return;
          }
  
          configFromISO(config);
          if (config._isValid === false) {
              delete config._isValid;
              utils_hooks__hooks.createFromInputFallback(config);
          }
      }
docs: date from iso format or fallback