From aa82027a1721ee7233e92ab1b9f9ced43a8f17cf Mon Sep 17 00:00:00 2001
From: Richard van Velzen <rvanvelzen@experty.com>
Date: Mon, 20 Jun 2016 08:39:46 +0200
Subject: [PATCH] Don't assume DEBUG is defined when exporting --self

Potential fix for #1148
---
 tools/exports.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/exports.js b/tools/exports.js
index a481143c..54aa23e8 100644
--- a/tools/exports.js
+++ b/tools/exports.js
@@ -18,6 +18,6 @@ exports["tokenizer"] = tokenizer;
 exports["is_identifier"] = is_identifier;
 exports["SymbolDef"] = SymbolDef;
 
-if (DEBUG) {
+if (typeof DEBUG !== "undefined" && DEBUG) {
     exports["EXPECT_DIRECTIVE"] = EXPECT_DIRECTIVE;
 }