From 4d1c067d752cd165ce2b69545629621033b93e4c Mon Sep 17 00:00:00 2001
From: SaschaNaz <saschanaz@outlook.com>
Date: Sun, 13 Sep 2015 16:01:32 +0900
Subject: [PATCH] use undefined instead of null

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

diff --git a/src/services/formatting/formatting.ts b/src/services/formatting/formatting.ts
index 5d4938498e4..eeebfd1649d 100644
--- a/src/services/formatting/formatting.ts
+++ b/src/services/formatting/formatting.ts
@@ -282,7 +282,7 @@ namespace ts.formatting {
      */
     function getOwnOrInheritedDelta(n: Node, options: FormatCodeOptions, sourceFile: SourceFile): number {
         let previousLine = Constants.Unknown;
-        let child: Node = null;
+        let child: Node;
         while (n) {
             let line = sourceFile.getLineAndCharacterOfPosition(n.getStart(sourceFile)).line;
             if (previousLine !== Constants.Unknown && line !== previousLine) {