From 02a50c9f7ee0d27e7ea9609e850fb405d386b51e Mon Sep 17 00:00:00 2001
From: Sebastian McKenzie <sebmck@gmail.com>
Date: Tue, 13 Jan 2015 01:16:00 +1100
Subject: [PATCH] fix unnecessary default parameter iife - fixes #251

---
 lib/6to5/transformation/transformers/es6-default-parameters.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/6to5/transformation/transformers/es6-default-parameters.js b/lib/6to5/transformation/transformers/es6-default-parameters.js
index ba3c0ad631..eb7b6fc1b3 100644
--- a/lib/6to5/transformation/transformers/es6-default-parameters.js
+++ b/lib/6to5/transformation/transformers/es6-default-parameters.js
@@ -31,7 +31,7 @@ exports.Function = function (node, parent, file, scope) {
           throw file.errorWithNode(node, "Temporal dead zone - accessing a variable before it's initialized");
         }
 
-        if (scope.has(node.name)) {
+        if (scope.has(node.name, true)) {
           iife = true;
         }
       };