'How to use fetch method in place for GetMetaData

How can i use fetch method in place for GetMetaData? I am trying to implement a function for the map does not refresh.

     view.on("click", function (evt) {  

                // Search for symbols on click's position

                view.hitTest(evt.screenPoint)

                  .then(function(response){

                      console.log("screen click", response);

                      evt.preventDefault();

                      getmetaData(response?.results[0]?.graphic);

                      // datasample(response?.results[0]?.graphic);

                  })

              })


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