> That is about to change however examples here https://youtu.be/yRlwOdCK7Ho 28:30 mark)

But it doesn't explain what js.window IS. I assume it's implemented via static interop (https://pub.dev/packages/js#staticinterop), but not sure.

Is it out of some secret library they have somewhere, generated from Web IDL? Do I have to implement every function/property on window myself via static interop?

Btw, you can link to youtube with a timestamp: https://youtu.be/yRlwOdCK7Ho?t=1724

Update: I did find this package, which seems to generate bindings from Web IDL: https://pub.dev/packages/js_bindings, but it's not from the Dart team, and prob not what they're using here.