Apply more let/const transforms.

_composeArgs.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;
 
 /**
  * Creates an array that is the composition of partially applied arguments,
@@ -13,14 +13,16 @@ var nativeMax = Math.max;
  * @returns {Array} Returns the new array of composed arguments.
  */
 function composeArgs(args, partials, holders, isCurried) {
-  var argsIndex = -1,
-      argsLength = args.length,
-      holdersLength = holders.length,
-      leftIndex = -1,
-      leftLength = partials.length,
-      rangeLength = nativeMax(argsLength - holdersLength, 0),
-      result = Array(leftLength + rangeLength),
-      isUncurried = !isCurried;
+  const argsLength = args.length;
+  const holdersLength = holders.length;
+  const leftLength = partials.length;
+
+  let argsIndex = -1;
+  let leftIndex = -1;
+  let rangeLength = nativeMax(argsLength - holdersLength, 0);
+
+  const result = Array(leftLength + rangeLength);
+  const isUncurried = !isCurried;
 
   while (++leftIndex < leftLength) {
     result[leftIndex] = partials[leftIndex];