Tiny style correction in uniqueId and compareMultiple

uniqueId.js

@@ -1,5 +1,5 @@
 /** Used to generate unique IDs. */
-let idCounter = {}
+const idCounter = {}
 
 /**
  * Generates a unique ID. If `prefix` is given, the ID is appended to it.
@@ -18,12 +18,12 @@ let idCounter = {}
  * // => '105'
  */
 function uniqueId(prefix='$lodash$') {
-  if(!idCounter[prefix]){
+  if (!idCounter[prefix]) {
     idCounter[prefix] = 0
   }
 
   const id =++idCounter[prefix]
-  if(prefix === '$lodash$') {
+  if (prefix === '$lodash$') {
     return `${id}`
   }