From 736b6bc84c8e5de8c1d608d3529378d5fa95a3d2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Joaqu=C3=ADn=20Ormaechea?= <joaquinormaechea@gmail.com>
Date: Thu, 25 Jul 2019 20:30:38 -0300
Subject: [PATCH] Fixed undefined and null responseParameter values

---
 src/ApiGateway.js | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/src/ApiGateway.js b/src/ApiGateway.js
index 215f8ff4a..0721e8fcb 100644
--- a/src/ApiGateway.js
+++ b/src/ApiGateway.js
@@ -656,10 +656,18 @@ module.exports = class ApiGateway {
                     if (value.startsWith('integration.response')) {
                       if (valueArray[2] === 'body') {
                         debugLog('Found body in right-hand');
-                        headerValue = (valueArray[3]
-                          ? jsonPath(result, valueArray.slice(3).join('.'))
-                          : result
-                        ).toString();
+                          headerValue = (valueArray[3]
+                            ? jsonPath(result, valueArray.slice(3).join('.'))
+                            : result
+                          );
+                          if(typeof headerValue === 'undefined' || headerValue === null) {
+	                          debugLog(
+	                            `Warning: empty value for responseParameter "${key}": "${value}"`,
+	                          );
+                            headerValue = '';
+                          } else {
+                            headerValue = headerValue.toString();
+                          }
                       } else {
                         this.printBlankLine();
                         this.log(