Custom ButtonStyle boilerplate that doesn't take ages to update its `isPressed` state when using spring animations

ResponsiveButtonStyle.swift

struct ResponsiveButtonStyle: PrimitiveButtonStyle {
  // Use this instead of `Configuration.isPressed`.
  @State private var isPressed = false

  func makeBody(configuration: Configuration) -> some View {
    configuration.label
      .scaleEffect(isPressed ? 0.9 : 1)
      .animation(.spring, value: isPressed)
      ._onButtonGesture { isPressed in
        self.isPressed = isPressed
      } perform: {
        configuration.trigger()
      }
  }
}

⚠️ Caution: If you’re embedding a SwiftUI view that uses buttons with this style inside a UIViewControllerRepresentable, those buttons’ actions will never be triggered.