React Native JWT authentication using Axios interceptors

The piece outlines the process of implementing user authentication in a React Native application, highlighting the use of JSON Web Tokens (JWT) for secure information exchange. It explains how to build a demo app that displays random cat images only after user authentication, using social login providers or custom authentication systems. The article details using Express and MongoDB for backend development and employing tools like axios and react-native-keychain to manage authentication tokens securely. It also discusses the use of refresh tokens to maintain user sessions and the axios-auth-refresh package to handle token expiration and API request retries. Additionally, the text emphasizes the importance of persisting tokens for a seamless user experience, suggesting the use of Keychain services over less secure options like AsyncStorage. The article concludes by suggesting enhancements such as better error handling and navigation integration for a more robust application.