From aac3ffe2acf561c7391a36c3af712990bf446cc5 Mon Sep 17 00:00:00 2001
From: Michael Holloway <mholloway@wikimedia.org>
Date: Mon, 25 Jan 2016 11:58:20 -0500
Subject: [PATCH] Prevent TypeError due to undefined property when parsing
 styles

---
 lib/CSSStyleDeclaration.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/CSSStyleDeclaration.js b/lib/CSSStyleDeclaration.js
index f7cdd42..f6eb666 100644
--- a/lib/CSSStyleDeclaration.js
+++ b/lib/CSSStyleDeclaration.js
@@ -17,7 +17,10 @@ function parseStyles(s) {
   parser.addListener("property", function(e) {
     if (e.invalid) return; // Skip errors
     result[e.property.text] = e.value.text;
-    if (e.important) result.important[e.property.text] = e.important;
+    if (e.important) {
+      result.important = result.important || {};
+      result.important[e.property.text] = e.important;
+    }
   });
   s = (''+s).replace(/^;/, '');
   parser.parseStyleAttribute(s);