Shopify app performance testing

[santhoshwiz]

We have a shopify app which is developed using remix and shopify CLI. The app basically works on checkout. We are looking to test the load/performance testing for app. We have planned to do it via JMeter but the issue is that since the app is embedded in store we will not have a way to test using url and so.

Which will be ideal way to load test shopify app?