From 6be2a6e02a422e526308076a502adb95781d5ced Mon Sep 17 00:00:00 2001
From: Sebastian McKenzie <sebmck@gmail.com>
Date: Fri, 13 Feb 2015 15:09:17 +1100
Subject: [PATCH] add extra note to minification dead code elimination
 transformer

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

diff --git a/lib/6to5/transformation/transformers/minification/dead-code-elimination.js b/lib/6to5/transformation/transformers/minification/dead-code-elimination.js
index eb94292989..6a7fdb8a57 100644
--- a/lib/6to5/transformation/transformers/minification/dead-code-elimination.js
+++ b/lib/6to5/transformation/transformers/minification/dead-code-elimination.js
@@ -4,6 +4,7 @@ exports.optional = true;
 
 exports.ExpressionStatement = function (node) {
   // remove consequenceless expressions such as local variables and literals
+  // note: will remove directives
   //
   //   var foo = true; foo; -> var foo = true;
   //   "foo"; ->
@@ -66,8 +67,7 @@ exports.IfStatement = {
     //   if (foo) {} else { bar; } -> if (!foo) { bar; }
     //
 
-    if (t.blockStatement(consequent) && !consequent.body.length &&
-        t.isBlockStatement(alternate) && alternate.body.length) {
+    if (t.blockStatement(consequent) && !consequent.body.length && t.isBlockStatement(alternate) && alternate.body.length) {
       node.consequent = node.alternate;
       node.alternate  = null;
       node.test       = t.unaryExpression("!", test, true);