iOS 16 SwiftUI ImageRenderer

[john-flanagan]

With iOS 16 Apple is introducing a class purpose built for converting SwiftUI Views into UIImages called ImageRenderer.

Seems like it could be a great tool for more reliable SwiftUI snapshot tests.

I put together a PoC branch as a starting point, but I'm hoping to start a discussion on the approach and the API design.
main...john-flanagan:swift-snapshot-testing:swift-ui-image-renderer

[adozenlines]

What happens when a view in its initial state transitions to another state, for example, an overlay view in response to a changing property? Is the initial UI state captured as an image or the final UI state in response to view update?