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An extension that allows inspection of React component hierarchy in the Chrome and Firefox Developer Tools.

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Quick Overview

React DevTools is an official browser extension developed by Facebook for debugging React applications. It allows developers to inspect the React component hierarchy, view and edit component props and state, and analyze performance issues in their React applications.

Pros

  • Provides deep insights into React component structure and state
  • Offers powerful performance profiling tools
  • Integrates seamlessly with browser developer tools
  • Supports both React and React Native applications

Cons

  • Can be overwhelming for beginners due to its extensive feature set
  • May slow down browser performance when inspecting large applications
  • Requires manual installation and updates in some browsers
  • Limited functionality when working with production builds (minified code)

Code Examples

React DevTools is not a code library, but rather a browser extension and standalone application. Therefore, there are no code examples to provide.

Getting Started

To get started with React DevTools:

  1. Install the extension for your browser:

  2. Open your React application in the browser.

  3. Open the browser's developer tools (usually F12 or Ctrl+Shift+I).

  4. Look for the "Components" and "Profiler" tabs in the developer tools.

  5. Start inspecting and debugging your React application using the DevTools features.

For more detailed instructions and advanced usage, refer to the official documentation.

Competitor Comparisons

227,213

The library for web and native user interfaces.

Pros of React

  • Core library for building user interfaces, offering a complete ecosystem
  • Widely adopted with extensive community support and resources
  • Provides a virtual DOM for efficient rendering and performance

Cons of React

  • Larger bundle size and potentially higher memory usage
  • Steeper learning curve for beginners compared to simpler tools
  • Requires additional tools and libraries for a complete application setup

Code Comparison

React:

import React from 'react';

function App() {
  return <h1>Hello, World!</h1>;
}

export default App;

React DevTools:

// No direct code comparison available
// React DevTools is primarily used for debugging and inspecting React applications

Key Differences

  • React is the core library for building user interfaces, while React DevTools is a browser extension for debugging React applications
  • React DevTools complements React by providing developer tools for inspecting component hierarchies, props, and state
  • React DevTools is specifically designed for development and debugging, whereas React is used in both development and production environments

Use Cases

  • Use React for building interactive user interfaces and single-page applications
  • Use React DevTools alongside React for debugging, profiling, and optimizing React applications during development

DevTools for Redux with hot reloading, action replay, and customizable UI

Pros of Redux DevTools

  • Specialized for Redux state management, offering deeper insights into action dispatches and state changes
  • Provides time-travel debugging, allowing developers to step through state changes
  • Supports middleware and enhancers, enabling custom logging and state manipulation

Cons of Redux DevTools

  • Limited to Redux-based applications, unlike React DevTools which works with any React app
  • Steeper learning curve for developers not familiar with Redux concepts
  • May introduce performance overhead in large applications with frequent state changes

Code Comparison

React DevTools:

const App = () => {
  const [count, setCount] = useState(0);
  return <button onClick={() => setCount(count + 1)}>{count}</button>;
}

Redux DevTools:

const counterReducer = (state = 0, action) => {
  switch (action.type) {
    case 'INCREMENT': return state + 1;
    default: return state;
  }
};
const store = createStore(counterReducer, applyMiddleware(logger));

Both tools enhance the development experience for React applications, but they serve different purposes. React DevTools focuses on component hierarchy and props/state inspection, while Redux DevTools specializes in state management and action tracking. The choice between them depends on the specific needs of the project and the state management approach used.

⚙️ Browser devtools extension for debugging Vue.js applications.

Pros of devtools-v6

  • More lightweight and faster performance
  • Better integration with Vue.js ecosystem
  • Cleaner and more intuitive user interface

Cons of devtools-v6

  • Less mature and potentially fewer features than react-devtools
  • Smaller community and fewer third-party extensions
  • Limited cross-framework compatibility

Code Comparison

react-devtools:

import { createElement } from 'react';
import { createRoot } from 'react-dom/client';
import DevTools from 'react-devtools-inline';

const container = document.getElementById('root');
const root = createRoot(container);
root.render(createElement(DevTools, props));

devtools-v6:

import { createApp } from 'vue'
import DevTools from '@vue/devtools'
import App from './App.vue'

const app = createApp(App)
app.use(DevTools)
app.mount('#app')

Both tools provide similar functionality for inspecting and debugging components, but their implementation and usage differ based on their respective frameworks. react-devtools is more established and feature-rich, while devtools-v6 offers tighter integration with Vue.js and a more streamlined experience for Vue developers.

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README

This project has migrated to github.com/facebook/react

The source code for the v3 of the extension can be found in the v3 branch.

To build the v3 browser extension from source:

git checkout v3

# Install dependencies and build the unpacked extension
yarn install
yarn build:extension

# Follow the on-screen instructions to complete installation

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