From ba8bc559073a3f9659fdf95b177cdf7370ceb22a Mon Sep 17 00:00:00 2001
From: Benjamin Lichtman <belichtm@microsoft.com>
Date: Fri, 29 Jun 2018 11:51:56 -0700
Subject: [PATCH] Make regexp a constant

---
 src/services/outliningElementsCollector.ts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/services/outliningElementsCollector.ts b/src/services/outliningElementsCollector.ts
index 88a74e1aec6..bae6bc7222c 100644
--- a/src/services/outliningElementsCollector.ts
+++ b/src/services/outliningElementsCollector.ts
@@ -83,8 +83,9 @@ namespace ts.OutliningElementsCollector {
         }
     }
 
+    const regionDelimiterRegExp = /^\s*\/\/\s*#(end)?region(?:\s+(.*))?(?:\r)?$/;
     function isRegionDelimiter(lineText: string) {
-        return lineText.match(/^\s*\/\/\s*#(end)?region(?:\s+(.*))?(?:\r)?$/);
+        return regionDelimiterRegExp.exec(lineText);
     }
 
     function addOutliningForLeadingCommentsForNode(n: Node, sourceFile: SourceFile, cancellationToken: CancellationToken, out: Push<OutliningSpan>): void {