What components or approaches in SwiftUI do you use to develop repeatable and consistent interface elements within a design system?

To create reusable and consistent interface elements within SwiftUI as part of a design system, the following are typically used:

• Custom View components — create your own structures that encapsulate appearance and behavior to reuse in different places.

• View modifiers — create custom modifiers to apply common styles and settings.

• Use Environment and EnvironmentObject — for passing common theme and style settings through the interface hierarchy.

• Use Color and Font from centralized resources — define colors, fonts, and other parameters in one place to ensure consistency.

Example of a custom button component:

struct PrimaryButton: View {
    var title: String
    var action: () -> Void

    var body: some View {
        Button(action: action) {
            Text(title)
                .font(.headline)
                .foregroundColor(.white)
                .padding()
                .frame(maxWidth: .infinity)
                .background(Color.blue)
                .cornerRadius(8)
        }
    }
}

This component can be used everywhere, ensuring a unified style and behavior.