From e75d1a16663c13b276abbba9c90ee2387fb2479c Mon Sep 17 00:00:00 2001
From: Sebastian McKenzie <sebmck@gmail.com>
Date: Tue, 20 Jan 2015 01:45:00 +1100
Subject: [PATCH] fix helper identifiers

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

diff --git a/lib/6to5/file.js b/lib/6to5/file.js
index 894f7ca869..7d15509388 100644
--- a/lib/6to5/file.js
+++ b/lib/6to5/file.js
@@ -212,6 +212,7 @@ File.prototype.addHelper = function (name) {
 
   var runtime = this.get("runtimeIdentifier");
   if (runtime) {
+    name = t.identifier(t.toIdentifier(name));
     return t.memberExpression(runtime, name);
   } else {
     var ref = util.template(name);