Consistent parens usage for arrow functions with body.

.internal/matchesStrictComparable.js

@@ -8,7 +8,7 @@
  * @returns {Function} Returns the new spec function.
  */
 function matchesStrictComparable(key, srcValue) {
-  return object => {
+  return (object) => {
     if (object == null) {
       return false
     }