From d0f534938c8ad996e9c198c141fd7d6b188089af Mon Sep 17 00:00:00 2001
From: piotrrussw <piotr.wadycki@gmail.com>
Date: Mon, 20 Jul 2020 16:03:30 +0200
Subject: [PATCH] Handle type error while using firefox devtools in any of ios
 responsive modes

---
 DetectRTC.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/DetectRTC.js b/DetectRTC.js
index 8274b81..1a801a5 100644
--- a/DetectRTC.js
+++ b/DetectRTC.js
@@ -468,7 +468,9 @@
             case 'iOS':
                 if (/OS (\d+)_(\d+)_?(\d+)?/.test(nAgt)) {
                     osVersion = /OS (\d+)_(\d+)_?(\d+)?/.exec(nVer);
-                    osVersion = osVersion[1] + '.' + osVersion[2] + '.' + (osVersion[3] | 0);
+                    if (osVersion && osVersion.length > 3) {
+                        osVersion = osVersion[1] + '.' + osVersion[2] + '.' + (osVersion[3] | 0);
+                    }
                 }
                 break;
         }