From 1e18618170ae03c8a6c1ffecd4961db96ac682cc Mon Sep 17 00:00:00 2001
From: Daniel Rosenwasser <drosen@microsoft.com>
Date: Thu, 7 Apr 2016 00:47:29 -0700
Subject: [PATCH] Ensure that the entire contents are simply 'use strict'.

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

diff --git a/src/compiler/emitter.ts b/src/compiler/emitter.ts
index d132e12e793..bb4d179704c 100644
--- a/src/compiler/emitter.ts
+++ b/src/compiler/emitter.ts
@@ -7636,7 +7636,7 @@ const _super = (function (geti, seti) {
             }
 
             function isUseStrictPrologue(node: ExpressionStatement): boolean {
-                return !!(node.expression as StringLiteral).text.match(/use strict/);
+                return (node.expression as StringLiteral).text === "use strict";
             }
 
             function ensureUseStrictPrologue(startWithNewLine: boolean, writeUseStrict: boolean) {