SwiftUI Animatable zIndex modifier

View+animatableZIndex.swift

fileprivate struct AnimatableZIndexModifier: ViewModifier, Animatable {
    var animatableData: CGFloat
    
    func body(content: Content) -> some View {
        content.zIndex(animatableData)
    }
}

extension View {
    func animatableZIndex(_ zIndex: CGFloat) -> some View {
        modifier(AnimatableZIndexModifier(animatableData: zIndex))
    }
}