SwiftUI repeated fade between two views

RepeatedFadeBetweenViews.Swift

struct RepeatedFadeBetweenViews<ViewA: View, ViewB: View>: View {
    var animationDuration: Double = 2.0
    let viewA: () -> ViewA
    let viewB: () -> ViewB
    
    @State private var isViewAVisible = false
    
    var body: some View {
        Group {
            if isViewAVisible {
                viewA()
            } else {
                viewB()
            }
        }
        .onAppear {
            withAnimation(.easeInOut(duration: animationDuration).repeatForever(autoreverses: true)) {
                isViewAVisible = true
            }
        }
    }
}