TCAKit

TCAKit is an open-source Swift package designed to bring composable architecture patterns to SwiftUI apps with a minimal footprint. It emphasizes a slim core API (Store, Reducer, Effect, Dependencies) and zero external dependencies, making it suitable for production apps that want structure without overhead. The library integrates smoothly with modern Swift concurrency (async/await) and SwiftUI, offering utilities and helpers for view binding, state propagation, and side effect handling. It supports testability via a TestStore abstraction, making assertions over state changes and effects. Developers praise it for being understandable in a few minutes, reducing boilerplate compared to full TCA, while still giving predictable state management and effect control. TCAKit is indexed in the Swift Package Index under the “composable-architecture” keyword. Key Contributions: - Designed and built the core module architecture (Store, Reducer, Effect, Dependencies) in Swift, ensuring separation of concerns and composability. - Created SwiftUI helpers / property wrappers to bind state and actions to views with minimal boilerplate. - Implemented TestStore and assertion APIs enabling deterministic testing of reducers and effects. - Integrated async/await support and cancellation patterns for modern concurrency use cases. - Shipped sample apps and usage templates for counter, todo, networking, and multi-feature flows to onboard users quickly. - Authored documentation, guides, and examples to lower integration friction for external developers. - Profiled and optimized effect scheduling, ensuring minimal overhead in real app scenarios. - Supported versioning and backward compatibility for multiple SwiftUI and iOS versions.