From f3ce5d763cd80cf271118bc3bdefc3ce82d0cc12 Mon Sep 17 00:00:00 2001
From: Cyrus Najmabadi <cyrusn@microsoft.com>
Date: Tue, 16 Dec 2014 16:27:14 -0800
Subject: [PATCH] CR feedback.

---
 src/compiler/parser.ts | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/compiler/parser.ts b/src/compiler/parser.ts
index 45b33fc1bfb..0caaf414e94 100644
--- a/src/compiler/parser.ts
+++ b/src/compiler/parser.ts
@@ -457,13 +457,17 @@ module ts {
         currentNode(position: number): IncrementalNode;
     }
 
+    const enum InvalidPosition {
+        Value = -1
+    }
+
     function createSyntaxCursor(sourceFile: SourceFile): SyntaxCursor {
         var currentArray: NodeArray<Node> = sourceFile.statements;
         var currentArrayIndex = 0;
 
         Debug.assert(currentArrayIndex < currentArray.length);
         var current = currentArray[currentArrayIndex];
-        var lastQueriedPosition = -1;
+        var lastQueriedPosition = InvalidPosition.Value;
 
         return {
             currentNode(position: number) {