From 3dd48b8d475f727cb5aa63b09388a3a3553629be Mon Sep 17 00:00:00 2001
From: Mark Otto <markdotto@gmail.com>
Date: Tue, 18 Aug 2015 20:28:28 -0700
Subject: js grunt

---
 js/dist/util.js | 37 +++++++++++++++++++++----------------
 1 file changed, 21 insertions(+), 16 deletions(-)

(limited to 'js/dist/util.js')

diff --git a/js/dist/util.js b/js/dist/util.js
index a2ae5f299..934bad697 100644
--- a/js/dist/util.js
+++ b/js/dist/util.js
@@ -1,4 +1,3 @@
-
 /**
  * --------------------------------------------------------------------------
  * Bootstrap (v4.0.0): util.js
@@ -53,9 +52,9 @@ var Util = (function ($) {
 
     var el = document.createElement('bootstrap');
 
-    for (var name in TransitionEndEvent) {
-      if (el.style[name] !== undefined) {
-        return { end: TransitionEndEvent[name] };
+    for (var _name in TransitionEndEvent) {
+      if (el.style[_name] !== undefined) {
+        return { end: TransitionEndEvent[_name] };
       }
     }
 
@@ -101,7 +100,9 @@ var Util = (function ($) {
     TRANSITION_END: 'bsTransitionEnd',
 
     getUID: function getUID(prefix) {
-      do { prefix += ~ ~(Math.random() * 1000000); } while (document.getElementById(prefix));
+      do {
+        prefix += ~ ~(Math.random() * 1000000);
+      } while (document.getElementById(prefix));
       return prefix;
     },
 
@@ -125,24 +126,28 @@ var Util = (function ($) {
     },
 
     supportsTransitionEnd: function supportsTransitionEnd() {
-      return !!transition;
+      return Boolean(transition);
     },
 
     typeCheckConfig: function typeCheckConfig(componentName, config, configTypes) {
-
       for (var property in configTypes) {
-        var expectedTypes = configTypes[property];
-        var value = config[property];
-        var valueType = undefined;
-
-        if (value && isElement(value)) valueType = 'element';else valueType = toType(value);
-
-        if (!new RegExp(expectedTypes).test(valueType)) {
-          throw new Error(componentName.toUpperCase() + ': ' + ('Option "' + property + '" provided type "' + valueType + '" ') + ('but expected type "' + expectedTypes + '".'));
+        if (configTypes.hasOwnProperty(property)) {
+          var expectedTypes = configTypes[property];
+          var value = config[property];
+          var valueType = undefined;
+
+          if (value && isElement(value)) {
+            valueType = 'element';
+          } else {
+            valueType = toType(value);
+          }
+
+          if (!new RegExp(expectedTypes).test(valueType)) {
+            throw new Error(componentName.toUpperCase() + ': ' + ('Option "' + property + '" provided type "' + valueType + '" ') + ('but expected type "' + expectedTypes + '".'));
+          }
         }
       }
     }
-
   };
 
   setTransitionEndSupport();
-- 
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