check bsFirefox exists before modifying

Essk · Essk · commit fe3515dd516f · 2025-07-23T13:15:39.000+01:00
diff --git a/scripts/karma.conf.js b/scripts/karma.conf.js
@@ -28,8 +28,10 @@ module.exports = function(config) {
         defaults = {};
       }
       // pin Browserstack Firefox version to 64
-      // eslint-disable-next-line camelcase
-      defaults.bsFirefox.browser_version = '64.0';
+      if (defaults.bsFirefox) {
+        // eslint-disable-next-line camelcase
+        defaults.bsFirefox.browser_version = '64.0';
+      }
 
       return defaults;
     },
