ScrollView shrink to fit content

SomeView.swift

@State private var scrollViewContentSize: CGSize = .zero

ScrollView {
    VStack {}
        .background(
            GeometryReader { geo -> Color in
                DispatchQueue.main.async {
                    scrollViewContentSize = geo.size
                }
                return Color.clear
            }
        )
}.frame(
    maxHeight: scrollViewContentSize.height
)