From c369e25cbe504bb2bb3f36fcb09dff9848c97df9 Mon Sep 17 00:00:00 2001
From: Vladimir Matveev <vladima@microsoft.com>
Date: Thu, 24 Jul 2014 12:49:54 -0700
Subject: [PATCH] added comments

---
 src/compiler/parser.ts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/compiler/parser.ts b/src/compiler/parser.ts
index 7778763b3e..e005f1e6d5 100644
--- a/src/compiler/parser.ts
+++ b/src/compiler/parser.ts
@@ -801,6 +801,7 @@ module ts {
                 if (isListElement(kind, /* inErrorRecovery */ false)) {
                     var element = parseElement();
                     result.push(element);
+                    // test elements only if we are not already in strict mode
                     if (!isInStrictMode && checkForStrictMode) {
                         if (isPrologueDirective(element)) {
                             if (isUseStrictPrologueDirective(element)) {