SwiftUI: Detect if view is displayed on iPhone or iPad

DeviceSwitcherView.swift

struct DeviceSwitchView<iPhoneView: View, iPadView: View>: View {
     @Environment(\.horizontalSizeClass) var sizeClass

     var iPhone: iPhoneView
     var iPad: iPadView

     init(@ViewBuilder iPhone: () -> iPhoneView, @ViewBuilder iPad: () -> iPadView) {
         self.iPhone = iPhone()
         self.iPad = iPad()
     }

     var body: some View {
         NavigationView {
             if sizeClass == .compact {
                 // iPhone
                 iPhone
             } else {
                 // iPad
                 iPad
             }
         }
     }
}