From d78a01086d551d212be8eb680d36a300ab75a2db Mon Sep 17 00:00:00 2001
From: Sebastian McKenzie <sebmck@gmail.com>
Date: Sat, 24 Jan 2015 10:29:12 +1100
Subject: [PATCH] add new expression as a valid conditional expression parent
 for parantheses insertion - fixes #578

---
 lib/6to5/generation/node/parentheses.js | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/lib/6to5/generation/node/parentheses.js b/lib/6to5/generation/node/parentheses.js
index 391f8ffc5c..2311c9f2c7 100644
--- a/lib/6to5/generation/node/parentheses.js
+++ b/lib/6to5/generation/node/parentheses.js
@@ -151,8 +151,10 @@ exports.ConditionalExpression = function (node, parent) {
     return true;
   }
 
-  if (t.isCallExpression(parent) && parent.callee === node) {
-    return true;
+  if (t.isCallExpression(parent) || t.isNewExpression(parent)) {
+    if (parent.callee === node) {
+      return true;
+    }
   }
 
   if (t.isConditionalExpression(parent) && parent.test === node) {