From dac4ee7bfc1e70a59f5ce7c3be1645dbd2e18641 Mon Sep 17 00:00:00 2001
From: Rossen Hristov <rossen.hristov@telerik.com>
Date: Sat, 17 Sep 2016 13:34:01 +0300
Subject: [PATCH] Add temporary console trace to catch a crash on build machine

---
 tns-core-modules/ui/core/dependency-observable.ts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tns-core-modules/ui/core/dependency-observable.ts b/tns-core-modules/ui/core/dependency-observable.ts
index 1cf135dbc..da3358f5f 100644
--- a/tns-core-modules/ui/core/dependency-observable.ts
+++ b/tns-core-modules/ui/core/dependency-observable.ts
@@ -212,6 +212,10 @@ export class DependencyObservable extends Observable implements definition.Depen
     }
 
     public _resetValue(property: Property, valueSource: number = ValueSource.Local): void {
+        if (!property){
+            console.log(`>>>>>>>>>>>>>>>>>>>>>>>>>>>> Someone is passing undefined property!`);
+            console.trace();
+        }
         let entry: PropertyEntry = this._propertyEntries[property.id];
         if (!entry) {
             return;