From a298075949de4876c20ddfa3b0baa230eeb1b720 Mon Sep 17 00:00:00 2001
From: Sebastian McKenzie <sebmck@gmail.com>
Date: Sun, 7 Jun 2015 23:37:47 +0100
Subject: [PATCH] check for loc value on comments before attempting to adjust
 it

---
 src/babel/generation/index.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/babel/generation/index.js b/src/babel/generation/index.js
index 925d640247..46d40013ab 100644
--- a/src/babel/generation/index.js
+++ b/src/babel/generation/index.js
@@ -344,7 +344,7 @@ class CodeGenerator {
 
       //
       if (comment.type === "CommentBlock" && this.format.indent.adjustMultilineComment) {
-        var offset = comment.loc.start.column;
+        var offset = comment.loc && comment.loc.start.column;
         if (offset) {
           var newlineRegex = new RegExp("\\n\\s{1," + offset + "}", "g");
           val = val.replace(newlineRegex, "\n");