How to back port new SwiftUI APIs to older iOS versions

WWDC brings shiny new SwiftUI APIs. Your users are still on iOS 17 (or older). What now?

What this video covers:

• Detecting API availability with #available and if #available
• Creating custom backported modifiers that mimic new APIs
• Using ViewBuilder to conditionally apply APIs
• Wrapping UIKit components when SwiftUI APIs don't exist
• Maintaining clean code without #available sprawl

Real examples:

• Backporting scrollTransition to older iOS
• Custom swipe actions before native existed
• Navigation stack APIs before NavigationStack

Perfect for developers maintaining apps with wide iOS version support who still want to use modern patterns where possible.