From 623b97f2ec653f92bd72c5081b5c3e2721323a8e Mon Sep 17 00:00:00 2001
From: Yui T <yuisu@microsoft.com>
Date: Thu, 4 Sep 2014 15:13:54 -0700
Subject: [PATCH] Add check if the compilationSetting object hasOwnProperty
 before add the property to TypeScriptLS object

---
 src/harness/harnessLanguageService.ts | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/harness/harnessLanguageService.ts b/src/harness/harnessLanguageService.ts
index e15063204ca..c30ea6d5ce7 100644
--- a/src/harness/harnessLanguageService.ts
+++ b/src/harness/harnessLanguageService.ts
@@ -248,7 +248,9 @@ module Harness.LanguageService {
 
         public setCompilationSettings(settings: any) {
             for (var key in settings) {
-                this.settings[key] = settings[key];
+                if (settings.hasOwnProperty(key)) {
+                    this.settings[key] = settings[key];
+                }
             }
         }