From 203ecaf85ba7ad714e77c78b2102309d5581948c Mon Sep 17 00:00:00 2001
From: Sergej Tatarincev <st@bekitzur.com>
Date: Tue, 9 Oct 2012 12:52:28 +0300
Subject: [PATCH] Fix nodejs minify without inSourceMap exception

When inSourceMap is omitted fs.readFile throws exception. Fixed version
calls fs.readFile only when inSourceMap argument is present
---
 tools/node.js | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/tools/node.js b/tools/node.js
index bf47abad..fccdd83f 100644
--- a/tools/node.js
+++ b/tools/node.js
@@ -92,9 +92,13 @@ exports.minify = function(files, options) {
 
     // 4. output
     var map = null;
+    var inMap = null;
+    if (options.inSourceMap) {
+        inMap = fs.readFileSync(options.inSourceMap, "utf8");
+    }
     if (options.outSourceMap) map = UglifyJS.SourceMap({
         file: options.outSourceMap,
-        orig: fs.readFileSync(options.inSourceMap, "utf8")
+        orig: inMap
     });
     var stream = UglifyJS.OutputStream({ source_map: map });
     toplevel.print(stream);
-- 
2.34.1