From 4d59976d82fb6d6f689a0cdd761bb20b23de165f Mon Sep 17 00:00:00 2001
From: Sebastian McKenzie <sebmck@gmail.com>
Date: Sun, 9 Nov 2014 16:27:31 +1100
Subject: [PATCH] remove _parent from nodes in traverse.removeProperties

---
 lib/6to5/traverse/index.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/6to5/traverse/index.js b/lib/6to5/traverse/index.js
index 42f48f2c29..c74e007c64 100644
--- a/lib/6to5/traverse/index.js
+++ b/lib/6to5/traverse/index.js
@@ -87,6 +87,7 @@ traverse.removeProperties = function (tree) {
   var clear = function (node) {
     delete node.extendedRange;
     delete node._scopeIds;
+    delete node._parent;
     delete node.tokens;
     delete node.range;
     delete node.start;