From c46a2e7e1b6f05ce79fb2fa551edaec1b481a39c Mon Sep 17 00:00:00 2001
From: Zhengbo Li <zhengbli@microsoft.com>
Date: Mon, 13 Mar 2017 12:45:28 -0700
Subject: [PATCH] always create new node array when assigning positions

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

diff --git a/src/services/textChanges.ts b/src/services/textChanges.ts
index 5c345e6e4e..5b9f0f5ef4 100644
--- a/src/services/textChanges.ts
+++ b/src/services/textChanges.ts
@@ -380,7 +380,7 @@ namespace ts.textChanges {
             return visited;
         }
         // clone nodearray if necessary
-        const nodeArray = visited === nodes ? createNodeArray(visited) : visited;
+        const nodeArray = visited === nodes ? createNodeArray(visited.slice(0)) : visited;
         nodeArray.pos = getPos(nodes);
         nodeArray.end = getEnd(nodes);
         return nodeArray;