From 14e05cd9375d5a89b6d47f3cd76a6ed42e5ec080 Mon Sep 17 00:00:00 2001
From: Ron Buckton <rbuckton@microsoft.com>
Date: Thu, 15 Dec 2016 16:38:10 -0800
Subject: [PATCH] Fix condition in onSubstituteNode

---
 src/compiler/transformers/es5.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/compiler/transformers/es5.ts b/src/compiler/transformers/es5.ts
index f051aac98f4..6dd875965d9 100644
--- a/src/compiler/transformers/es5.ts
+++ b/src/compiler/transformers/es5.ts
@@ -63,7 +63,7 @@ namespace ts {
          * @param node The node to substitute.
          */
         function onSubstituteNode(emitContext: EmitContext, node: Node) {
-            if (node.id && noSubstitution[node.id]) {
+            if (node.id && noSubstitution && noSubstitution[node.id]) {
                 return previousOnSubstituteNode(emitContext, node);
             }