React developer tools are software tools, libraries, and browser extensions that help developers build, debug, test, and manage React applications. By simplifying these tasks, React developer tools help developers improve code quality and make the development process more efficient.
1. React Developer Tools
React Developer Tools is an official browser extension for inspecting and debugging React applications. It helps developers understand how components are structured and how their data changes.
- Inspect component hierarchies, props, and state in the Components panel.
- Use the Profiler panel to investigate component rendering and performance issues.
- Available for supported browsers, including Chrome and Firefox.
2. Redux DevTools
Redux DevTools helps developers debug applications that use Redux for state management. It provides a view of how application state changes in response to dispatched actions.
- Inspect dispatched actions and the state changes they produce.
- Review previous states and replay actions to investigate bugs.
- Useful for applications that manage shared state with Redux.
3. TanStack Query Devtools
TanStack Query Devtools helps developers inspect server data managed by TanStack Query. It makes it easier to understand how data is fetched, cached, refreshed, and updated in a React application.
- View queries and their status, including loading, stale, and cached states.
- Inspect query details and troubleshoot data-fetching issues.
- Monitor mutations and cache behavior when using TanStack Query.
4. Storybook
Storybook is a tool for building and testing UI components separately from the main application. It helps developers and designers review individual components before integrating them into a complete interface.
- Develop and preview components in isolation.
- Create stories to show different component states and variations.
- Document reusable components and support visual testing workflows.
5. Bit
Bit is a component development platform that helps teams create, share, and maintain reusable components across projects. It is particularly useful when multiple applications need to use the same UI elements.
- Create and develop components independently.
- Share reusable components across projects and teams.
- Manage component dependencies and versions to support consistent development.
6. React Compiler
React Compiler is a build-time tool that automatically optimizes React components and hooks. It can reduce unnecessary re-rendering by applying optimizations that developers might otherwise implement manually.
- Automatically memoizes supported components and values to improve update performance.
- Reduces the need for manual use of
useMemo,useCallback, andReact.memoin many situations. - Integrates with supported build tools and should be tested with the application's existing code before adoption.
7. Why Did You Render (WDYR)
Why Did You Render, often called WDYR, is a debugging tool that helps developers investigate unnecessary React component re-renders. It is mainly useful when an application has rendering or performance problems.
- Logs information about component re-renders during development.
- Helps identify cases where components render even though their relevant inputs have not meaningfully changed.
- Best suited for debugging specific performance issues rather than being required in every React project.
8. Vite
Vite is a frontend build tool that provides a development server and prepares application files for production. It is commonly used to create React projects and offers fast feedback while developers edit code.
- Starts a local development server with fast updates during development.
- Supports React through official plugins.
- Builds and optimizes application assets for deployment.
9. Next.js
Next.js is a React framework for building full-stack web applications. It adds features and structure around React, including routing, rendering options, and tools for handling data and application requests.
- Supports file-based routing to organize pages and navigation.
- Provides server-side rendering, static generation, and React Server Components through its supported features.
- Offers integrated conventions and tooling for building and deploying web applications.
10. React Testing Library
React Testing Library is a testing library that helps developers test React components through the way users interact with them. It encourages tests that focus on visible behavior rather than internal implementation details.
- Test interactions such as clicking buttons, filling forms, and navigating interfaces.
- Check whether the expected text and elements appear on the screen.
- Works with testing frameworks such as Vitest and Jest.