i have this react app

i am trying to sort datas from it date wise (latest date comes top in the list )

the date is stored in two differnt pattern some are in yyyy-mm-dd and some are in dd-mm-yyyy

i am trying to sort both
where latest date comes in top of the list format

 const sortedOnDate = Object.values(groupedByDate).sort((arr1, arr2) => {
          if (arr1[0].date < arr2[0].date) {
            return -1;
          } else if (arr1[0].date > arr2[0].date) {
            return -1;
          }
          return 0;
        });

entire code i am adding in code sandbox

https://codesandbox.io/s/exciting-sea-ins4vt?file=/src/App.js