I'm a little embarrassed to admit, but I had been blissfully unaware that View extensions are type erasing.
That means if you have an extension for using your ViewModifier in a more ergonomic way, it'll be erased to AnyView unless you explicitly mark it as @inlinable.
https://gist.github.com/phillipcaudell/df04ebf01e9579a308e3534ac829a540
Edit: Perhaps this is just a quirk of Xcode Previews: https://mastodon.notsobig.co/@phill/111051676536041177
@phill since the modifier returns ‘some View’ the type information should be preserved.
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@jasonhowlin indeed an opaque type should preserve type information, but it appears Xcode Previews for whatever reason discards it. 🤷♂️
