From aa8f6546d57c12a615cd52628019c21fb7653960 Mon Sep 17 00:00:00 2001
From: Vasil Trifonov <v.trifonov@gmail.com>
Date: Wed, 26 Sep 2018 15:20:54 +0300
Subject: [PATCH 1/2] add a check for undefined environment values

---
 lib/compiler.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/compiler.js b/lib/compiler.js
index 159c366a..436403ba 100644
--- a/lib/compiler.js
+++ b/lib/compiler.js
@@ -135,6 +135,9 @@ function buildEnvCommandLineParams(config, envData, $logger) {
     const args = [];
     envFlagNames.map(item => {
         let envValue = envData[item];
+        if( typeof envValue === "undefined") {
+            return;
+        }
         if (typeof envValue === "boolean") {
             if (envValue) {
                 args.push(`--env.${item}`);

From 28046e7a3bdded0764777585236528a24522d049 Mon Sep 17 00:00:00 2001
From: Vasil Chimev <vasil.chimev@gmail.com>
Date: Wed, 26 Sep 2018 18:01:20 +0300
Subject: [PATCH 2/2] style: formatting

---
 lib/compiler.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/compiler.js b/lib/compiler.js
index 436403ba..75c3da0f 100644
--- a/lib/compiler.js
+++ b/lib/compiler.js
@@ -135,7 +135,7 @@ function buildEnvCommandLineParams(config, envData, $logger) {
     const args = [];
     envFlagNames.map(item => {
         let envValue = envData[item];
-        if( typeof envValue === "undefined") {
+        if (typeof envValue === "undefined") {
             return;
         }
         if (typeof envValue === "boolean") {