From 91f5087bc6cbea798e4d99ae320866871dca98f2 Mon Sep 17 00:00:00 2001
From: "Manu Mtz.-Almeida" <manu.valladolid@gmail.com>
Date: Wed, 16 Nov 2016 21:06:52 +0100
Subject: [PATCH] fix(animation): regression in _willChg()

---
 src/animations/animation.ts | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/animations/animation.ts b/src/animations/animation.ts
index 068e73b0259..eeb3895ecb9 100644
--- a/src/animations/animation.ts
+++ b/src/animations/animation.ts
@@ -913,7 +913,7 @@ export class Animation {
    */
   _willChg(addWillChange: boolean) {
     let wc: string[];
-    var effects = this._fx;
+    let effects = this._fx;
     if (addWillChange && effects) {
       wc = [];
       for (var i = 0; i < effects.length; i++) {
@@ -926,10 +926,10 @@ export class Animation {
         }
       }
     }
-
+    let willChange = (wc && wc.length) ? wc.join(',') : '';
     for (var i = 0; i < this._eL; i++) {
       // ******** DOM WRITE ****************
-      (<any>this._e[i]).style.willChange = addWillChange ? wc.join(',') : '';
+      (<any>this._e[i]).style.willChange = willChange;
     }
   }