A lightweight Swift framework for building reactive applications with unidirectional data flow, inspired by Elm and Redux.
Reactor is a Swift framework that enables unidirectional data flow for building reactive applications. It centralizes application state in a Core and uses events to trigger state updates, ensuring the UI is always synchronized with the data. Inspired by Elm and Redux, it provides a predictable and scalable architecture for Swift projects.
iOS and macOS developers building applications that require consistent state management, especially those familiar with reactive patterns like Redux or Elm looking for a Swift-native solution.
Developers choose Reactor for its simplicity (just one file), safety with Swift value types, and comprehensive features like commands for async operations and middleware for side effects, all while maintaining a minimal footprint.
🔄 Unidirectional data flow in Swift.
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The entire framework is a single file, enabling easy integration via drag-and-drop or package managers, as emphasized in the README's installation section.
Unidirectional data flow through events ensures state changes are traceable and consistent, reducing side effects and simplifying debugging.
Leverages mutating semantics on value types for state mutations, offering an imperative feel with functional safety, as detailed in the State section.
Commands handle asynchronous operations like networking by executing tasks and firing events back to the Core, integrating async flows seamlessly.
Middleware intercepts events and state for side effects like logging or analytics without mutating state, keeping business logic clean.
Requires defining separate structs for states, events, and commands, leading to verbose code that can grow cumbersome in large applications.
Compared to Redux in JavaScript, Reactor lacks third-party devtools and community plugins, making advanced features like time-travel debugging unavailable.
For complex state trees, frequent copying during updates may introduce performance latency, especially with high-frequency events.