swift-composable-architecture

Reducers manage predictable state in Swift apps by defining how actions transform state and produce effects. This modular approach maps actions to state changes, ensuring behavior remains testable and consistent across features.

The best way to test state changes and effects in Swift is using TestStore to exhaustively or non-exhaustively verify flows. This confirms actions produce expected state mutations and effects, ensuring reliable behavior across your application.

Yes, you can use the Composable Architecture for navigation in SwiftUI and UIKit. It enables composable navigation by allowing you to seamlessly compose features, share dependencies, and drive navigation across both UI frameworks.

To start modeling app behavior in Swift, create a Store with an initial State and a Reducer. Define your State, Action, and Reducer, then drive your UI with SwiftUI to begin mapping actions to state changes.

Organizing dependencies separately improves Swift app architecture by making features composable and testable. Sharing dependencies modularly prevents tangled code, allowing you to isolate effects and verify state changes reliably during testing.