How Do You Build and Test An App the Same Way it Gets Deployed by Apple App Store

I have an app that I thought was done - it was working fine in both debug and release builds from my local mac to my iPhone. I put it up on the Apple App Store to begin testing with Test Flight, and now I'm getting nothing but errors, all of which seem related to JIT activities that aren't at all obvious. This is a terrible way to try and debug an app now - trying fixes and updating my build on the App Store. So how can I build and test my app locally with whatever kind of AOT switch is used when deployed from the Apple App Store?