About React browser extension
SummaryHi there React team! ⚛️ 👋This change is a proof of concept of how the new Chrome DevTools Performance extension API ( can be used to surface React runtime data directly in the Chrome DevTools Performance panel.To do this, the hooks in profilingHooks.js that mark beginning and end of React measurements using Performance marks are modified to also use Performance measure with the detail field format specification of the Performance extension API.Because these marks are used by React Profiler, they are kept untouched and the calls to performance.measure are added on top to surface them to the Chrome DevTools Performance panel, along with the browser's native runtime data.Because this is a proof of concept, not all the tasks and marks taken by the React Profiler are added to the Chrome DevTools Performance panel (f.e. update scheduling marks), but this could be done as a follow up of this commit.Note: to enable the user timings to be collected in the first place, the React DevTools extension needs to be installed (so that the hooks are loaded to the website). In an alternative approach, the calls to the api could be added directly to the framework so that no extension needs to be installed, but this would require a more careful implementation.MotivationWe (the Chrome Page Quality team) think allowing developers to extend the Chrome Peformance Panel can significantly offer a better experience for developers looking to improve performance to the current solutions available.Right now, the React Profiler has its own implementation of a timeline that parses a Chromium's trace data and merges it with its own instrumentation data. This is problematic becauseIt fragments the developer workflow: Users are required to profile with React DevTools and with the browser profiler (the Performance panel). After the recording is finished the output of the Performance panel (browser trace data) needs to be imported into the React profiler.Insufficient details in specialized tools: Users might still need a more detailed view of the browser runtime which is not available in specialized tools like the react profiler (f.e. dropped frames). This leads them to frequently jump back and forth between tools to obtain the whole picture.Broken deps: Changes to the upstream trace data format will cause the React profiler to break (f.e. React profiler doesn't support the current format exported by the Chrome Performance panel)Cost of maintenance: Framework tool developers need to implement and maintain code that mimics the functionality of the native browser tools (f.e. JS flamechart, network lane, etc.).With the proposed API this problems could be significantly alleviated and it could potentially yield to an overall better experience for web developers.For reference, here's at an example of a timeline recorded by React's profiler being surfaced to
Key features of the React browser extension that are enabled through these drivers include:
- akoskm/vite-react-tailwindcss-browser-extension-simple
- reactjs - Accessing browser extension in React - Stack Overflow
- Browser extension boilerplate built with React Vite - GitHub
- Browser extensions - spicing it up with React - DEV Community
- React Native monorepo for every platform: Browser Extensions
- akoskm/vite-react-tailwindcss-browser-extension-supabase
- I made a template for building browser extensions with React
نظرة عامةAdds React debugging tools to the Chrome Developer Tools.Created from revision 44c3d3d665 on 2/7/2025.React Developer Tools is a Chrome DevTools extension for the open-source React JavaScript library. It allows you to inspect the React component hierarchies in the Chrome Developer Tools.You will get two new tabs in your Chrome DevTools: "Components ⚛" and "Profiler ⚛".The Components tab shows you the root React components that were rendered on the page, as well as the subcomponents that they ended up rendering.By selecting one of the components in the tree, you can inspect and edit its current props and state in the panel on the right. In the breadcrumbs you can inspect the selected component, the component that created it, the component that created that one, and so on.If you inspect a React element on the page using the regular Elements tab, then switch over to the React tab, that element will be automatically selected in the React tree.The Profiler tab allows you to record performance information.This extension requires permissions to access the page's React tree, but it does not transmit any data remotely. It is fully open source, and you can find its source code at (2/7/2025)تم التحديث9 فبراير 2025محتوى مقدّم منMetaالحجم1.57MiBاللغاتمطوّر برامجMeta Platforms, INC.1 Meta WayMenlo Park, CA 94025US البريد الإلكتروني
[email protected] هاتف +1 650-543-4800تاجريُعرِّف هذا المطوّر نفسه بصفته جهة تجارية بموجب التعريف الصادر عن الاتحاد الأوروبي، ويلتزم بتقديم منتجات أو خدمات تلتزم بالقوانين المتّبعة في الاتحاد الأوروبي.نظام ترقيم البيانات العالمي (DUNS)196337864الخصوصيةأفصَح المطوِّر عن أنّه لن يتم جمع بياناتك أو استخدامها.يُقِرّ هذا المطوِّر بأنّ بياناتك:لا يتم بيعها لأطراف ثالثة خارج إطار حالات الاستخدام المُتفَق عليها.لا تُستخدَم أو تُنقَل لأغراض غير متعلِّقة بالوظيفة الرئيسية للعنصر.لا تُستخدَم أو تُنقَل لتحديد الأهلية الائتمانية أو لأغراض الإعارة.دعمللحصول على مساعدة بخصوص الاستفسارات أو الاقتراحات أو المشاكل، انتقِل إلى الموقع الإلكتروني لدعم المطوّرين.ذات صلةLocatorJS4.3(72)LocatorJS Chrome Extension - option-click to code (ReactJS)Angular state inspector4.7(64)Helps you debug Angular component state. Supports Angular 1/2+/Ivy!MobX Developer Tools3.3(53)Dev-tools for MobX and Reactdaily.dev | The homepage developers deserve4.8(2.5 ألف)Get one personalized feed for all the knowledge you need as a developer.Redux DevTools4.6(728)Redux DevTools for debugging application's state changes.React Context DevTool4.5(23)Devtool for React Context and useReducerJSON Formatter4.6(1.9 ألف)Makes JSON easy to read. Open source.Vue.js devtools4.2(2.1 ألف)DevTools browser extension for Vue.jsVercel4.6(25)Use the Vercel Toolbar on production deploymentsTesting Playground4.3(59)Simple and complete DOM testing playground that encourage good testing practices.GraphQL Network Inspector4.7(128)Simple and clean network inspector for GraphQLGraphQL developer tools3.0(24)Devtools panel for GraphQL developmentLocatorJS4.3(72)LocatorJS Chrome Extension - option-click to code (ReactJS)Angular state inspector4.7(64)Helps you debug Angular component state. Supports Angular 1/2+/Ivy!MobX Developer Tools3.3(53)Dev-tools for MobX and Reactdaily.dev | The homepage developers deserve4.8(2.5 ألف)Get one personalized feed for all the knowledge you need as a developer.Redux DevTools4.6(728)Redux DevTools for debugging application's state changes.React Context DevTool4.5(23)Devtool for React Context and useReducerJSON Formatter4.6(1.9 ألف)Makes JSON easy to read. Open source.Vue.js devtools4.2(2.1 ألف)DevTools browser extension for Vue.js
