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React
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A True React Hook Form Alternative – FormEngine 4.0 Is Now MIT Licensed and Free! 🚀
- Optimajet released FormEngine Core 4.0 on May 15, 2025, under the MIT license, making it free for commercial use, offering a leading alternative to React Hook Form.
- FormEngine simplifies setup with schema-based definitions and provides a powerful visual designer for rapid form creation, unlike React Hook Form.
- FormEngine offers easy custom component integration, real-time form previews, a built-in component library, and is completely free and MIT licensed.
- FormEngine Core 4.0 features include UI-agnostic integration, framework-friendly deployment, multi-database compatibility, robust validation, dynamic properties, and flexible storage.
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Medium
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155
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Handling Deep Linking in React Native Without Breaking Navigation
- Proper deep linking implementation in mobile apps is crucial to avoid crashes and navigation issues.
- Developers using React Native often face challenges with deep linking, where it might break the navigation stack for different entry points.
- This article aims to address the deep linking issues in React Native apps, ensuring a seamless user experience across various entry points like push notifications, email links, and social media.
- Understanding the root cause of navigation problems with deep linking is essential before implementing effective solutions.
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Dev
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266
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useCallback in React: Memoizing Functions to Prevent Re-Creation
- The useCallback hook in React is used to memoize functions and avoid unnecessary re-creation, especially when passing functions as props to child components.
- By using useCallback, you store the reference of a function, improving performance by preventing new function creation on each render.
- The syntax of useCallback involves importing it from React and defining a memoized function with optional dependencies.
- Without useCallback, functions re-create on each render, potentially causing performance issues.
- Usage of useCallback optimizes scenarios like event handlers, preventing unnecessary function re-creations.
- In cases involving API calls or state-dependent functions, useCallback helps optimize by memoizing functions only when dependencies change.
- The key difference between useCallback and useMemo is that useCallback memoizes function references, while useMemo memoizes computed values.
- For function memoization, useCallback is the preferred choice, while useMemo is suitable for memorizing expensive calculations.
- In conclusion, useCallback is a valuable tool in React for optimizing performance by avoiding unnecessary function creations.
- Remember that using useCallback can significantly enhance the efficiency of your React applications by reducing re-renders and improving overall performance.
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Dev
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284
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Static Sites on Steroids: Deploy React/Vue/Angular in Seconds & Supercharge Them with CDNs 🚀
- Static sites based on React, Vue, or Angular can be deployed easily and optimized for performance using CDNs like Cloudflare or AWS CloudFront.
- Static sites offer advantages such as speed, security, and scalability, making them ideal for web development.
- Popular hosting platforms like Vercel, Netlify, and GitHub Pages offer easy deployment options for different frameworks and technologies.
- Utilizing CDNs like Cloudflare or AWS CloudFront can significantly improve the speed and performance of static sites, resulting in better user experience and higher Lighthouse scores.
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Dev
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146
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The React interview mistake I made (and how you can avoid it) 😅
- In a recent React interview, the author focused too much on technical solutions like Redux and Context API instead of discussing the reasoning behind their choice.
- The interviewer emphasized the importance of understanding the rationale behind selecting state management tools, highlighting the need to think through real-world problems.
- The author learned that interviews are more about problem-solving and considering team dynamics and project needs rather than just showcasing technical knowledge.
- It is essential for React developers to demonstrate not only technical skills but also the ability to solve problems and understand the human aspects of software development.
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Medium
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377
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Beyond memo: Real-World React Performance for Large-Scale Applications
- React.memo and useMemo/useCallback are powerful tools for optimizing React performance, but they should be used judiciously after profiling slow components.
- List virtualization techniques like react-window or react-virtualized can significantly improve performance for long lists by rendering only the visible items.
- Code splitting enables loading components on-demand, reducing the initial bundle size and improving efficiency, especially for features not always accessed.
- Optimizing event handlers with debouncing and throttling, and regular performance profiling are essential practices for improving performance in large-scale React applications.
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Dev
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8
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Why Type Is the Better Choice in React + TypeScript
- React combined with TypeScript offers a powerful and safe development environment for modern web development.
- Choosing between type and interface in React projects depends on specific use cases and coding styles.
- For modern React, type is generally more suitable due to its flexibility in handling unions, intersections, and primitive types, making the code cleaner and easier to read.
- Interface may be preferred for extensible data types or working with classes, but consistency within the team or project is crucial for maintainable code.
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Dev
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271
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React Performance Optimization: From Slow to Lightning Fast (Complete Guide 2025)
- This article serves as a complete guide to optimizing React performance, transforming slow apps into speedy ones.
- Performance is crucial, as 53% of users leave sites that take over 3 seconds to load.
- Diagnosing performance issues using Chrome DevTools is the initial step to identify slowdowns.
- Quick wins like using React.memo(), useMemo(), and useCallback() can improve performance in under 5 minutes.
- Advanced optimizations like code splitting with React.lazy() and virtual scrolling are more intricate techniques discussed.
- A real-world case study showcases how various optimizations led to a significant load time improvement.
- Tools like React DevTools Profiler and Bundle Analyzer are recommended for performance testing.
- The article also provides a 7-day performance action plan and bonus tips for further optimization.
- Continuous monitoring and implementation of optimization techniques are key for maintaining high React app performance.
- Deeper dives into React optimization techniques and real-world examples are suggested for further learning.
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Medium
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133
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Solving crashes when integrating firebase in React Native
- Firebase integration in React Native can lead to crashes in production, causing frustration for developers.
- Common issues include Firebase Firestore initialization problems leading to app crashes and authentication errors disrupting user experience.
- These crashes often occur in production despite working fine in development, posing significant challenges for app stability.
- Understanding the common pitfalls and solutions in Firebase integration can help developers avoid these issues and ensure smoother app performance.
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Dev
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200
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Complete Guide to Setting Up Code Quality Standards in React Native Projects
- The article provides a complete guide to setting up code quality standards in React Native projects, covering various aspects such as ESLint configuration, Prettier setup, Husky and Git Hooks, testing setup, TypeScript configuration, Babel configuration, security setup, and troubleshooting.
- Prerequisites include Node.js, Yarn package manager, Git, and a React Native project (new or existing). Initial setup involves installing required dependencies like ESLint, Prettier, Husky, Jest, TypeScript, and Babel, along with creating configuration files.
- ESLint configuration covers basic setup, adding ESLint scripts to package.json, and installing additional ESLint plugins. Prettier setup includes creating configuration files, ignoring certain directories, and adding Prettier scripts.
- Setting up Husky involves initializing it, configuring lint-staged, and adding Husky scripts. Testing setup includes configuring Jest, creating Jest setup file, and adding test scripts for running tests and coverage.
- TypeScript configuration details setting up tsconfig.json. Babel configuration involves creating babel.config.js. Security setup covers installing GitLeaks and adding a GitLeaks script.
- Troubleshooting section addresses common issues like ESLint errors, TypeScript errors, Jest issues, and Husky not working. It also includes VS Code integration best practices for commit messages, file organization, and testing structure.
- In conclusion, the setup ensures consistency in code style, prevents errors, and maintains high code quality standards. Regularly updating dependencies and documentation is recommended to keep the project up-to-date.
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Dev
4w
191
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This Week In React #235 : React Router, createStore, SuspenseList | Expo, Lava, Fortnite, Skia, AI, Lynx | TC39, using, Deno
- React Router team revealed a preview of React Server Components (RSC) support using Parcel bundler, with stable support waiting for Vite to officially support RSCs.
- Render Props pattern resurfaces with projects proposing to expose React core hooks in a render callback, offering a way to 'inline' a component.
- React Core PR introduces the createStore() skeleton API for Concurrent Stores, allowing ad-hoc state updates and following the reducer/actions pattern.
component in React being actively developed to coordinate Suspense boundaries and control their 'reveal order'. - Recent developments include PRs on SWC for @swc/react-compiler, Next.js for Segment Explorer devtool, and addressing a race condition vulnerability.
- Appwrite Sites now offers a Vercel alternative for deploying full-stack React frameworks, positioned as a direct competitor with differences in hosting models.
- JavaScript updates include TC39's agenda for the 108th meeting, insights into the 'using' keyword and Error.isError(), and Apollo's MCP server aligning GraphQL with AI needs.
- React Native updates feature Lynx 3.2 with Testing Library enhancements, React Native Skia 2.0.1 introducing wide gamut colors on iOS, and various tutorial videos and podcasts.
- Node 22.16 introduces node.config.json support, Zod 4.0 brings efficiency improvements and localization, and Remotion Media Parser provides a universal library for video processing.
- In the fun section, the newsletter bids farewell, wrapping up diverse updates and insights shared in the tech world.
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Dev
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419
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How to test if a mocked component receives the correct props in Jest and RTL (new since React 19)
- To test if a mocked component receives the correct props in Jest and RTL (since React 19), the approach has changed.
- Initially, set up a simple example with a
component that takes an array of names, calling a component. - In testing, mock the
component and verify its invocation to ensure proper isolation. - When testing props, a new test checks if
was called with the correct props in React 19. - In React 19, the second argument is now required to be undefined while it used to be an empty object {} pre-React 19.
- A practical example demonstrates the usage of expect.objectContaining to accurately validate props.
- An improvement suggestion is to utilize expect.objectContaining for testing specific props while allowing flexibility for other properties.
- Understanding the changes in React 19 regarding the second argument for prop validation in mocked components is vital for accurate testing.
- Ensure tests are updated post-React 19 to align with the new requirement of using undefined as the second argument for prop validation.
- The article emphasizes the importance of adapting testing approaches to changes in React to maintain accurate component testing.
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Dev
4w
147
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Handling WebSockets in React Native with Socket.IO
- Socket.IO is a library that facilitates low-latency, bidirectional communication between client and server in React Native.
- Setting up a project involves creating a React Native project and installing socket.io-client.
- A Socket Context is established to make the socket instance globally accessible in React.
- Key features include automatic connection management and a global socket instance.
- Handling acknowledgements ensures reliable event delivery with retries and timeouts.
- Integration into the app involves setting up a SocketProvider and implementing a ChatScreen component.
- The setup ensures reliable event delivery, reconnection management, and global access within the application.
- This robust approach allows React Native apps to handle WebSocket communication effectively even in unreliable network conditions.
- Github link for reference: https://github.com/dubbyding/react-native-socket
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Tricky Enough
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62
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Understanding React Router Hooks: A Guide for Development
- React Router Hooks provide a modern and flexible way to manage navigation and routing in React apps.
- Hooks like useHistory, useLocation, useParams, and useRouteMatch replace older methods for routing tasks.
- The useHistory hook allows programmatically navigating and altering the app's location.
- useLocation grants access to the current location object with URL information like pathname and search.
- useParams enables extraction of dynamic parameters from a route's path.
- useRouteMatch helps in matching the current location to a specific route.
- Benefits include simplified code, better integration with functional components, improved flexibility, and better performance.
- React Router Hooks enhance code readability, conciseness, and overall maintainability of React applications.
- They allow for full integration with React Router within functional components without the need for class components.
- Using hooks improves navigation control, location state management, and route matching in a more adaptable and reusable manner.
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Guardian
4w
98
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‘Ludicrous and unfair’: older workers react to pressure to delay retirement
- As French workers protest Macron's plan to raise state pension age, the IMF suggests older workers should delay retirement to balance public finances amid aging population pressures.
- The IMF cited improved cognitive function and physical health of older individuals, advocating for delayed retirement and reduced early retirement benefits to address fiscal challenges.
- Response to the proposal was divided, with many expressing outrage at the idea of working later in life, especially for those in physically demanding or low-paid jobs.
- Critics argued that older workers have already contributed to the system and should not bear the burden of economic challenges alone, calling for government reconsideration of financial allocations.
- Suggestions included limiting immigration, reducing support for asylum seekers, and cutting benefits for non-working younger individuals before impacting retirement age.
- Concerns were raised about the impact of extended working years on social care and childcare responsibilities, pointing out the strain on older individuals serving as unpaid caregivers.
- Ageism in the job market was highlighted as a barrier to older workers wanting to prolong their careers, with discrimination seen as a significant obstacle in implementing retirement delay policies.
- Some individuals embraced the idea of working longer for personal, financial, and societal reasons, noting the benefits of staying active and engaged in work later in life.
- Amid varying perspectives on retirement age, the affordability of retirement was questioned due to increasing living costs, prompting individuals to reconsider traditional notions of retirement.
- Examples were shared of individuals who continued to work past traditional retirement ages, citing personal satisfaction, financial need, and a desire to remain engaged as reasons for their choice.
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