swap 2 var without another temp one

jsonserver/server.js

 const GLOBAL_PORT = 3001
 
 function shuffle(array) {
-  var currentIndex = array.length, temporaryValue, randomIndex;
+  let currentIndex = array.length
+  let randomIndex
 
   // While there remain elements to shuffle...
-  while (0 !== currentIndex) {
-
+  while (currentIndex !== 0) {
     // Pick a remaining element...
-    randomIndex = Math.floor(Math.random() * currentIndex);
-    currentIndex -= 1;
+    randomIndex = Math.floor(Math.random() * currentIndex)
+    currentIndex -= 1
 
     // And swap it with the current element.
-    temporaryValue = array[currentIndex];
-    array[currentIndex] = array[randomIndex];
-    array[randomIndex] = temporaryValue;
+    ;[array[randomIndex], array[currentIndex]] = [array[currentIndex], array[randomIndex]]
   }
 
   return array;