Slightly improve performances for set() and update dev dependencies

Author: mariocasciaro

.gitignore

@@ -5,3 +5,4 @@ npm-debug.log
 generated
 coverage
 .DS_Store
+.nyc_output

index.js

@@ -83,8 +83,15 @@
       }, {});
     };
 
-    function hasShallowProperty(obj, prop) {
-      return (options.includeInheritedProps || (typeof prop === 'number' && Array.isArray(obj)) || hasOwnProperty(obj, prop))
+    var hasShallowProperty
+    if (options.includeInheritedProps) {
+      hasShallowProperty = function () {
+        return true
+      }
+    } else {
+      hasShallowProperty = function (obj, prop) {
+        return (typeof prop === 'number' && Array.isArray(obj)) || hasOwnProperty(obj, prop)
+      }
     }
 
     function getShallowProperty(obj, prop) {