From 71ce15a5c54b15da435e189e453ee0bc1d152524 Mon Sep 17 00:00:00 2001
From: mig <michel.gutierrez@gmail.com>
Date: Thu, 6 Dec 2018 17:45:29 +0100
Subject: [PATCH] fix error when building in dev mode

---
 gulpfile.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/gulpfile.js b/gulpfile.js
index 827e132..9b634d9 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -182,7 +182,7 @@ gulp.task("build-node-games", function () {
 });
 
 function ProcessJS(stream, concatName, skipBabel) {
-	if (!argv.prod)
+	if (!argv.prod && concatName)
 		stream = stream.pipe(sourcemaps.init());
 	if (!skipBabel)
 		stream = stream.pipe(babel({
@@ -197,7 +197,7 @@ function ProcessJS(stream, concatName, skipBabel) {
 			});
 	if (concatName)
 		stream = stream.pipe(concat(concatName));
-	if (!argv.prod)
+	if (!argv.prod && concatName)
 		stream = stream.pipe(sourcemaps.write("."));
 	return stream;
 }