SwiftUI Debugging: 6 Techniques Every iOS Dev Should Know

The article presents six practical techniques for debugging SwiftUI Preview crashes: building explicitly first, using Self._printChanges() to trace re-renders, replacing print() with OSLog Logger, isolating issues via binary search, injecting mock dependencies through protocols, and centralizing preview mock data. It explains that most preview failures stem from compile-time errors, runtime crashes, missing environment objects, or complexity timeouts, and argues that reliably previewable views tend to be well-architected.