From c9b657040b3c0910d7f2ff76f5803135986ee03a Mon Sep 17 00:00:00 2001
From: Chris Thielen <github@sandgnat.com>
Date: Thu, 1 Sep 2016 16:06:39 -0500
Subject: [PATCH] fix(ng2.uiSrefActive): don't puke on sref to invalid target
 state

---
 src/ng2/directives/uiSrefStatus.ts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/ng2/directives/uiSrefStatus.ts b/src/ng2/directives/uiSrefStatus.ts
index c57f28562..94d2bd90e 100644
--- a/src/ng2/directives/uiSrefStatus.ts
+++ b/src/ng2/directives/uiSrefStatus.ts
@@ -41,6 +41,7 @@ const inactiveStatus: SrefStatus = {
  * match the (tail of) the path, and the path's param values
  */
 const pathMatches = (target: TargetState): Predicate<PathNode[]> => {
+  if (!target.exists()) return () => false;
   let state: State = target.$state();
   let targetParamVals = target.params();
   let targetPath: PathNode[] = PathFactory.buildPath(target);