Fix hot reload in IE in strict mode (vuejs#4724)

posva · yyx990803 · commit edb75c872c1f · 2017-01-16T16:35:58.000-05:00
Fix vuejs#4465
diff --git a/src/transition/transition.js b/src/transition/transition.js
@@ -32,9 +32,12 @@ const animDurationProp = animationProp + 'Duration'
  * transitions but not raf (e.g. Android 4.2 browser) - since
  * these environments are usually slow, we are giving it a
  * relatively large timeout.
+ * 
+ * Binding to window is necessary to make hot reload work in
+ * IE in strict mode
  */
 
-const raf = inBrowser && window.requestAnimationFrame
+const raf = inBrowser && window.requestAnimationFrame.bind(window)
 const waitForTransitionStart = raf
   /* istanbul ignore next */
   ? function (fn) { raf(function () { raf(fn) }) }
