Add undefined check for navigator.userAgent

2020-04-23 16:08:48 -04:00
parent e7968bcc1a
commit 6008449e07
1 changed files with 3 additions and 1 deletions
--- a/src/ol/has.js
+++ b/src/ol/has.js
@@ -3,7 +3,9 @@
 */

 const ua =
-  typeof navigator !== 'undefined' ? navigator.userAgent.toLowerCase() : '';
+  typeof navigator !== 'undefined' && typeof navigator.userAgent !== 'undefined' 
+    ? navigator.userAgent.toLowerCase() 
+    : '';

 /**
 * User agent string says we are dealing with Firefox as browser.