Managing React State with Context and useReducer: A Practical Guide

React's Context API and useReducer hook offer a robust state management solution without external libraries. The Context API shares state across components, avoiding prop drilling, while useReducer manages complex state logic and updates. A customer management example demonstrates this, defining customer data types and actions with TypeScript for type safety. A context is created to hold the state and dispatch function, and a reducer function dictates state updates based on actions. A Provider component makes the context available to the application, leveraging a custom hook for easy state access and action dispatch. Components use the hook to interact with the state, updating data through actions. This approach centralizes state logic, provides predictable updates, and ensures scalability. Key practices include separating concerns, optimizing performance, handling errors, and ensuring immutable updates. In conclusion, Context and useReducer provide a maintainable and effective state management system for React applications.