From c866996f30cea161a2b23a8fcde6cf557c27b04c Mon Sep 17 00:00:00 2001
From: Paul van Brenk <paul.van.brenk@microsoft.com>
Date: Wed, 4 May 2016 16:17:08 -0700
Subject: [PATCH] CR Feedback

---
 src/compiler/commandLineParser.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/compiler/commandLineParser.ts b/src/compiler/commandLineParser.ts
index 518d7a2a1f3..338200b5d1a 100644
--- a/src/compiler/commandLineParser.ts
+++ b/src/compiler/commandLineParser.ts
@@ -673,7 +673,7 @@ namespace ts {
         const knownProperties = ["compilerOptions", "typingOptions", "files", "exclude"];
 
         for (const prop in json) {
-            if (knownProperties.indexOf(prop) >= 0) {
+            if (ts.indexOf(knownProperties, prop) >= 0) {
                 continue;
             }