From 2c8437ae92d9add734fc146fc602e3b114b2db88 Mon Sep 17 00:00:00 2001
From: Sebastian McKenzie <sebmck@gmail.com>
Date: Wed, 13 May 2015 08:46:41 +0100
Subject: [PATCH] ignore initializerless variable declaration when trying to
 inline single use variables - fixes #1516

---
 .../transformers/minification/dead-code-elimination.js        | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/babel/transformation/transformers/minification/dead-code-elimination.js b/src/babel/transformation/transformers/minification/dead-code-elimination.js
index 7736f2745d..6ddbb8f751 100644
--- a/src/babel/transformation/transformers/minification/dead-code-elimination.js
+++ b/src/babel/transformation/transformers/minification/dead-code-elimination.js
@@ -31,10 +31,10 @@ export function ReferencedIdentifier(node, parent, scope) {
   if (t.isVariableDeclarator(replacement)) {
     replacement = replacement.init;
   }
+  if (!replacement) return;
+
   t.toExpression(replacement);
-
   scope.removeBinding(node.name);
-
   binding.path.remove();
   return replacement;
 }