It’s in rails. I don’t quite understand how it works, but you can look in the application_controller for “crawler”. That appears to be where some of the magic happens.
I just spent a day figuring out that my plugin needs to use the StaticController when it does a render plain:.
So maybe you want to look at the static_controller. That appears to be how to bypass Ember, so maybe that’s what you want to see.
You can disable javascript in your browser and see what it renders.
But maybe you want to say what problem you are trying to solve rather than talk about your solution.