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React
Dev
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A Practical Guide to Testing Custom React Routers
- The article discusses the importance of automated testing for custom React routers in larger projects to ensure reliability and facilitate development.
- It emphasizes the benefits of automated tests in reducing uncertainties and catching regressions, providing examples of testing scenarios for the router hook, RouterLink, and RouterRoot components.
- The article includes details on setting up the testing environment using vitest and Testing Library, along with examples of testing functions within the custom router.
- Testing the Router Hook involves verifying path updates, multiple instances' behavior, and cleanup upon unmount to ensure proper functionality.
- Testing the RouterLink component focuses on testing clickable navigation functionality, while testing the RouterRoot component covers loading states and content rendering.
- Overall, the article highlights the importance of testing custom React routers for reliability, confidence in code, and faster development iterations.
- It also discusses limitations such as the lack of end-to-end testing, reliance on mocks with associated trade-offs, and the absence of performance testing for larger applications.
- The conclusion emphasizes the significance of effective testing in building code confidence and invites feedback or suggestions for further improvement.
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Brighter Side of News
1w
137
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New research finds that cells detect and react to sound waves
- New research shows that individual cells can detect and react to sound waves, revealing a new level of cellular response beyond chemical or physical cues.
- Scientists designed a system to expose living cells directly to sound waves, leading to changes in gene activity related to stress response, cell migration, and fat cell development.
- Different genes responded to sound in unique ways, with some showing short, sharp reactions (spiked genes) and others exhibiting slow but lasting responses (triggered genes).
- Sound was found to activate genes like Ptgs2, involved in inflammation, and hinder the development of fat cells, potentially offering new approaches for obesity treatment.
- Sound waves could affect gene responses and cellular behavior similar to how hormones or growth factors do, indicating a diverse impact on cellular functions.
- The study suggests that sound could be a non-invasive tool for treating diseases, influencing genetic changes at a cellular level with implications for healthcare and medicine.
- Around 190 genes were identified to respond to sound, impacting processes like cell adhesion, migration, apoptosis, and blood vessel growth, suggesting sound's role in tissue formation and repair.
- The research challenges the traditional view that only ears and brains process sound, indicating that the whole body may respond to sound stimuli in unique ways.
- Cellular responses to sound could have wider implications on how our environment, including everyday sounds and music, influences biological processes in the body.
- The non-invasive nature of sound as a stimulus presents opportunities for innovative approaches in healthcare and medicine, potentially revolutionizing treatment methods.
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Medium
1w
100
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Why Working with a Skilled React.js Developer Saves You Time, Money, and Headaches in 2025
- In 2025, hiring a skilled React.js developer can save time, money, and headaches when building modern web applications.
- A specialized freelance React developer emphasizes understanding product goals, timelines, and user expectations to support business outcomes.
- The developer uses modern, scalable technologies like TypeScript, Tailwind CSS, Next.js, and integrates REST APIs with Django backend.
- Testing, optimization, and fast delivery are prioritized to ensure clean code and quick iterations.
- Clear communication is highlighted as a key strength, with regular updates and collaborative work style.
- Clients are encouraged to consider the advantages of hiring a React developer with a business mindset, modern tech stack, testing practices, and clear communication.
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Hackernoon
1w
300
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Inside the ReAct Design Pattern: How Modern AI Thinks and Acts
- The ReAct design pattern in AI combines reasoning and acting to solve complex tasks effectively and produce accurate results.
- First introduced in 2022, the ReAct pattern is gaining popularity as a key architecture for modern agentic AI agents.
- ReAct involves a cycle of reasoning, acting, observing, and repeating until the task is completed satisfactorily.
- It enables agents to think, plan, and execute step by step, distinguishing it from traditional AI workflows.
- Implementation of ReAct includes an Orchestrator Agent, Reasoning Agent, Acting Agent, and Observing Agent working in a loop.
- ReAct-powered AI workflows excel at complex, multi-step problems, leveraging real-time feedback for strategy refinement.
- Pros include accuracy, adaptability, transparency, and integration with external tools, while cons involve complexity and potential latency.
- Tools like data packs, MCP servers, SERP APIs, and agent browsers are essential for implementing ReAct efficiently.
- ReAct design pattern boosts AI agents in thinking, acting, and learning dynamically to efficiently solve tasks and adapt to feedback.
- Overall, ReAct is transforming AI workflows by merging reasoning and acting, leading to more robust and effective AI agents.
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Dev
1w
293
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Reusable React Components: Easier Said Than Done
- Creating reusable React components can be tricky, as many components break under slight changes if not designed to scale.
- A better approach involves making components configurable with props, interactive with state, and communicative through custom events.
- Define the structure using props to allow adaptability to different use cases like a welcome banner or error message.
- Add interaction by using state to control internal visibility, like displaying a close button if needed.
- Enable communication by including custom events like onClose prop to notify the parent when the component is dismissed.
- The key to scalable components involves customizing with props, behavior with state, and communication with events.
- Using TypeScript with React enhances component development by providing strict typing to prevent runtime bugs and ensure clarity.
- Resource: React Documentation – useState, Learn React with TypeScript on Amazon.
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Dev
1w
373
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Beginner Friendly React Native Notes
- Comprehensive learning notes for React Native focusing on core concepts and practical examples.
- React Native allows building truly native mobile apps for iOS and Android with a single codebase.
- Key differences between React Native and Native development in terms of performance and development time.
- Explanation of how React Native works with the JavaScript Bridge for communication.
- Overview of popular apps built with React Native like Facebook, Instagram, Discord, and more.
- Initial setup guidance including using Expo for easier beginner experience.
- Introduction to JavaScript essentials including ES6+ features, async/await, and promises.
- Basic React concepts in React Native such as components, JSX syntax, props, state, and event handling.
- Introduction to intermediate topics like styling with Flexbox, navigation using React Navigation, user input handling, and state management.
- Discussion on APIs, data fetching using fetch and axios, effect hooks, and data storage with AsyncStorage.
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Dev
1w
416
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React Learning Journey – Day 3 Blog
- Today's session focused on learning Hooks in React for functional components.
- Hooks are special functions allowing functional components to use features like state and lifecycle methods.
- Benefits of using Hooks include easier state management, cleaner code, and reusability of logic.
- Types of Hooks in React include useState(), useEffect(), useContext(), etc.
- The useState() hook is explained as the most used hook to manage state within a functional component.
- The syntax for useState(): const [stateVariable, setStateFunction] = useState(initialValue);
- A practical example of using useState() is shown in a simple Counter component.
- State variables can be directly used in JSX using curly braces {}.
- A mini project named 'Counter App' was started to apply the understanding of Hooks.
- Key takeaways include the importance of Hooks, specific focus on useState(), and starting the Counter App project.
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Dev
1w
12
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Building Scalable React Apps: Best Practices for Performance and Maintainability
- A scalable React app is essential for handling more users and staying manageable for the team.
- Key practices for scalable React apps include organizing code into small, reusable components for easy maintenance.
- Keeping components focused on single responsibilities simplifies development and enhances team efficiency.
- Efficiently managing data with tools like Zustand for larger apps can improve performance as the app grows.
- Boosting performance with lazy loading, memoization, and virtualization techniques ensures smooth operation even with heavy traffic.
- Thorough testing using tools like Jest helps catch issues early and ensures proper app functionality.
- Ensuring accessibility by making the app usable for everyone, including those with disabilities, is crucial for user experience and legality.
- Leveraging modern tools like Next.js, React Query, and Vite can streamline development and enhance performance.
- Following these React best practices ensures smooth app functionality, scalability, cost savings, and user satisfaction for any business.
- Building a scalable React app involves key strategies for performance and maintainability to grow with the company.
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Dev
1w
97
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🌀 What is React Portal (And Why You Should Use It)
- React Portals allow rendering components outside the main DOM tree while keeping them connected to React.
- They help solve UI issues like z-index conflicts and overflow problems.
- A practical example is building a toast notification using React Portals.
- To use React Portals, you can create a portal for elements like modals, tooltips, toasts, and dropdowns.
- Tips for effective use include utilizing document.body instead of creating a special root and avoiding overuse to maintain a clean DOM.
- React Portals enable components to break free from the regular DOM structure while remaining linked to React’s state and event system.
- They provide solutions for various real-world UI problems in a straightforward manner.
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Medium
1w
84
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When Your React Native App Becomes a Storage Hog (And How I Trimmed 40MB Without Breaking Anything)
- A client raised concerns about their 180MB React Native app causing storage issues for users.
- App size can impact download rates, user retention, and performance on mobile devices.
- Strategies were implemented to reduce the app size without compromising features.
- Reducing app size is crucial as it affects user experience and download rates significantly.
- The article outlines real solutions used to trim a React Native app from 180MB to 140MB.
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Medium
1w
8
Tic-Tac-Toe Game in React
- When managing state in React, it's important to update it immutably to avoid bugs.
- Sharing state between components by lifting it to a common parent can help in keeping data in sync.
- It's advised to avoid managing the same data in multiple states and deriving values from props or existing state when possible.
- The Tic-Tac-Toe game discussed replays all turns to reconstruct the current state of the board.
- The game's logic is based on checking for winning combinations of 'X' or 'O' symbols in rows, columns, or diagonals.
- In React, JSX requires a single parent node per expression, leading to the need for careful structuring of components.
- Use of .map method in React for rendering elements can help create dynamic content.
- Avoid mutating the original state object directly in React to ensure proper re-rendering.
- React identifies changes by checking references, so updating state immutably is crucial for triggering re-renders.
- Working with React can be a challenging but rewarding experience, providing valuable insights into programming concepts and limitations.
- Despite the complexities, projects like building a Tic-Tac-Toe game in React serve as valuable learning experiences.
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Dev
1w
335
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Getting Started with React: My Learning Journey So Far
- React is a popular JavaScript library used for creating dynamic user interfaces.
- The learning journey in React often starts with understanding core concepts like ReactDOM, npm vs npx, JSX, Framework vs Library, and SPA vs MPA.
- ReactDOM is used to render React components into the actual DOM, serving as the bridge between React and the browser DOM.
- npm installs packages, while npx runs packages without the need for global installation.
- JSX allows writing HTML elements within JavaScript, enhancing code readability and ease of writing.
- React is categorized as a library as it focuses on the view layer, but can exhibit framework-like behavior with additional tools.
- SPAs load a single HTML file, change content dynamically without page refresh, offering faster user experience, like React applications.
- MPAs consist of separate HTML documents for each page, requiring full page reload for navigation, typical in traditional websites.
- React is well-suited for SPA development, providing seamless navigation and improved performance.
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Dev
1w
119
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This Week In React #238 : React Router, RSC, shadcn/ui, React Aria, Cosmos | iOS 26, JSI, Nitro, Windows, Tabs, PencilKit
- This week in the React ecosystem is relatively calm but with interesting blog posts and releases.
- React Native devs are working on iOS 26 Liquid Glass support and React Native 0.80.
- JS ecosystem activities include Oxlint 1.0 release and various Node.js news.
- React Router moving towards Open Governance with a community-driven approach.
- Dan Abramov explains how Imports work in RSC module systems.
- Interactive articles on Reactivity, useState with dependency array, URL Type-Safety, and Async Local Storage integration.
- Recent releases include React Aria, Puck, Astro, React Cosmos, and TanStack Router updates.
- React Suspense, Astro Integrations, and Plausible Analytics integration articles.
- Various React-related talks, including common React Query mistakes and moving off React.
- Node.js versions, Oxlint 1.0, Amaro 1.0, Jest 30, and WebKit in Safari 26 beta updates.
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Medium
1w
140
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10 Essential React.js Tips Every Developer Should Know
- React.js is a popular JavaScript library for building user interfaces, known for its flexibility and power.
- This article shares 10 essential React.js tips to help developers write better code and create high-quality applications.
- One important tip is to break down large components into smaller, focused ones for easier maintenance and understanding.
- Components in React should have a single responsibility, and splitting up tasks can help improve code quality.
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Dev
1w
290
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10+ Stunning React Icon Library
- React icon libraries play a crucial role in enhancing the visual appeal and navigation of web designs.
- They offer pre-designed, customizable icons for seamless integration with React components, saving time and ensuring a polished look.
- Iconify, Lucide, Lineicons, Material UI Icons, Heroicons, Tabler Icons, Iconoir, Phosphor Icons, React Social Icons, Xicons, React UseAnimations, and Lobe Icons are noteworthy React icon libraries for 2025.
- These libraries provide thousands of icons with features like seamless integration, customization options, and support for modern frameworks.
- Most libraries are free and open-source, catering to developers' needs for diverse icon collections without complexity.
- From animated icons to minimalist designs, developers can choose the right library to elevate their projects' UI/UX effectively.
- The variety of React icon libraries available in 2025 ensures that developers can find the perfect fit for their specific project requirements.
- Explore these libraries to enhance your UI effortlessly and let your creativity shine.
- The article discusses the features, pricing, and licenses of each highlighted React icon library, making it informative for developers seeking suitable resources.
- Overall, React icon libraries are instrumental in creating visually appealing, consistent, and user-friendly web interfaces.
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