check bsFirefox exists before modifying

5 days ago · fe3515dd51
1 changed files with 4 additions and 2 deletions
--- 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;
    },