Apply more let/const transforms.

_composeArgsRight.js

@@ -1,5 +1,5 @@
 /* Built-in method references for those with the same name as other `lodash` methods. */
-var nativeMax = Math.max;
+const nativeMax = Math.max;
 
 /**
  * This function is like `composeArgs` except that the arguments composition
@@ -13,20 +13,21 @@ var nativeMax = Math.max;
  * @returns {Array} Returns the new array of composed arguments.
  */
 function composeArgsRight(args, partials, holders, isCurried) {
-  var argsIndex = -1,
-      argsLength = args.length,
-      holdersIndex = -1,
-      holdersLength = holders.length,
-      rightIndex = -1,
-      rightLength = partials.length,
-      rangeLength = nativeMax(argsLength - holdersLength, 0),
-      result = Array(rangeLength + rightLength),
-      isUncurried = !isCurried;
+  let argsIndex = -1;
+  let holdersIndex = -1;
+  let rightIndex = -1;
+
+  const argsLength = args.length;
+  const holdersLength = holders.length;
+  const rightLength = partials.length;
+  const rangeLength = nativeMax(argsLength - holdersLength, 0);
+  const result = Array(rangeLength + rightLength);
+  const isUncurried = !isCurried;
 
   while (++argsIndex < rangeLength) {
     result[argsIndex] = args[argsIndex];
   }
-  var offset = argsIndex;
+  const offset = argsIndex;
   while (++rightIndex < rightLength) {
     result[offset + rightIndex] = partials[rightIndex];
   }