Key insights

• 💼 Asan has 6 years of experience in mobile application development, focusing on both native iOS and React Native.
• 📈 He developed a successful Shopify clone project with integrations that gained one million active users.
• 📦 Higher Order Components (HOCs) enhance component functionality and adhere to best practices for maintainability.
• 🧩 Smart components handle state while presentational components focus on rendering, promoting reusability in apps.
• 🔒 Using encrypted storage for tokens is crucial for enhancing application security.
• ⚙️ Testing a React Native application should start with unit tests before moving to integration tests.
• 🚀 Optimizing app performance includes using flat lists and image caching to minimize memory use.
• 🛠️ Debugging tools like Chrome, Xcode, and Android Studio assist with profiling and optimizing performance.

Q&A

• How can I troubleshoot crashes in a React Native application? 🐞

  When investigating crashes, focus on profiling memory and processor usage to identify any bottlenecks or resource issues. Utilize tools like Xcode and Android Studio to monitor app behavior and optimize performance accordingly.

• What best practices are recommended for unit testing in React Native? 🧪

  Begin with unit testing to validate individual features and follow up with integration tests to ensure that components work together seamlessly. Tools like Jest are useful for both unit and UI testing, allowing developers to catch issues early in the development process.

• What storage solutions should be used for sensitive data in apps? 🔐

  For sensitive data such as tokens, it's important to use encrypted storage to enhance security. This helps prevent unauthorized access and ensures that sensitive information is safeguarded.

• How do I optimize performance in a React Native app? ⚡

  Performance can be optimized in a React Native app by implementing FlatLists to render only visible items, caching images, and preventing unnecessary re-renders. Additionally, limit heavy processing in the UI thread, and use stylesheets instead of inline styles for better performance.

• What is the difference between smart and presentational components? 🤔

  Smart components are responsible for managing state and business logic within the application, whereas presentational components focus solely on rendering the UI. This separation promotes cleaner architecture and easier maintenance.

• What are higher order components (HOCs) in React? 🔄

  Higher order components (HOCs) are advanced techniques in React that enhance the functionality of a component by allowing a parent component to wrap a child component. This enables the child component to inherit properties from its parent, promoting better reusability and organization.

• What was the notable project Asan worked on? 📱

  Asan's notable project was a mobile application that replicated Shopify, which integrated social media and payment systems. This project has achieved significant success, attracting one million active users.

• What experience does Asan have in mobile app development? 🧑‍💻

  Asan has six years of experience in mobile application development, having started his career with native iOS development using Swift before transitioning to React Native. He has worked on various projects, including a notable one where he replicated Shopify in a mobile application.

• 00:02 In this mock interview, Asan, an experienced React Native developer, discusses his six years of mobile application development experience, including a notable project that replicated Shopify. He shares insights into his work with JavaScript and React Native, highlighting the integration capabilities of his projects. 💻
• 03:28 Higher order components (HOCs) in React enhance component functionality by allowing a parent component to wrap a child component, enabling it to inherit and utilize parent properties. Best practices include maintaining single responsibility and consistent naming conventions, while libraries like TypeScript and Axios can be used across JavaScript and React Native for component development. 🚀
• 06:55 This segment discusses the differences between smart and presentational components in React Native, the importance of the Interaction Manager for managing UI threads, the benefits of using reusable components, and the role of AsyncStorage for app-level persistent storage. 📚
• 10:35 In this segment, the speaker discusses the importance of using encrypted storage for tokens, encourages developers to apply for jobs at touring.com, and shares insights on React Native's setNativeProps and debugging techniques. 🛠️
• 13:46 To test a React Native application, start with unit tests to validate individual features, then move to integration tests to ensure full integration with existing flows. Address memory and processor issues using profiling tools during investigation of app crashes. 🛠️
• 17:03 Optimizing React Native app performance involves using flat lists, caching images, and avoiding unnecessary re-renders. 🛠️