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Changes in this release: * Fix React Compiler badging ([poteto](https://github.com/poteto) in [#31196](https://github.com/facebook/react/pull/31196)) * fix[react-devtools]: fixed timeline profiler tests ([hoxyq](https://github.com/hoxyq) in [#31261](https://github.com/facebook/react/pull/31261)) * fix[react-devtools]: record timeline data only when supported ([hoxyq](https://github.com/hoxyq) in [#31154](https://github.com/facebook/react/pull/31154)) * refactor[react-devtools]: flatten reload and profile config ([hoxyq](https://github.com/hoxyq) in [#31132](https://github.com/facebook/react/pull/31132)) * fix[react-devtools]: remove all listeners when Agent is shutdown ([hoxyq](https://github.com/hoxyq) in [#31151](https://github.com/facebook/react/pull/31151)) * fix[react-devtools]: removed redundant startProfiling call ([hoxyq](https://github.com/hoxyq) in [#31131](https://github.com/facebook/react/pull/31131)) * refactor[react-devtools/fiber/renderer]: optimize durations resolution ([hoxyq](https://github.com/hoxyq) in [#31118](https://github.com/facebook/react/pull/31118)) * fix[react-devtools]: update profiling status before receiving response from backend ([hoxyq](https://github.com/hoxyq) in [#31117](https://github.com/facebook/react/pull/31117)) * fix[react-devtools]: wrap key string in preformatted text html element ([hoxyq](https://github.com/hoxyq) in [#31153](https://github.com/facebook/react/pull/31153)) * chore[react-devtools]: drop legacy context tests ([hoxyq](https://github.com/hoxyq) in [#31059](https://github.com/facebook/react/pull/31059)) * chore[react-devtools]: add legacy mode error message to the ignore list for tests ([hoxyq](https://github.com/hoxyq) in [#31060](https://github.com/facebook/react/pull/31060)) * fix[react-devtools]: request hook initialization inside http server response ([hoxyq](https://github.com/hoxyq) in [#31102](https://github.com/facebook/react/pull/31102)) * [Flight] Serialize Server Components Props in DEV ([sebmarkbage](https://github.com/sebmarkbage) in [#31105](https://github.com/facebook/react/pull/31105)) * Add: reload to profile for Fusebox ([EdmondChuiHW](https://github.com/EdmondChuiHW) in [#31021](https://github.com/facebook/react/pull/31021)) * refactor: allow custom impl of backend realod-to-profile support check ([EdmondChuiHW](https://github.com/EdmondChuiHW) in [#31048](https://github.com/facebook/react/pull/31048)) * fix: use public instance in Fiber renderer and expose it from getInspectorDataForViewAtPoint ([hoxyq](https://github.com/hoxyq) in [#31068](https://github.com/facebook/react/pull/31068))
This is the source code for the React DevTools browser extension.
Installation
The easiest way to install this extension is as a browser add-on:
Local development
You can also build and install this extension from source.
Prerequisite steps
DevTools depends on local versions of several NPM packages1 also in this workspace. You'll need to either build or download those packages first.
1 Note that at this time, an experimental build is required because DevTools depends on the createRoot API.
To install all necessary dependencies, run the following command from the root of the repository:
yarn install
Build from source
To build dependencies from source, run the following command from the root of the repository:
yarn build-for-devtools
Download from CI
To use the latest build from CI, run the following commands starting from the root of the repository:
cd scripts/release
yarn install
./download-experimental-build.js
Build steps
Once the above packages have been built or downloaded, you can build the extension by running:
cd packages/react-devtools-extensions/
yarn build:chrome # => packages/react-devtools-extensions/chrome/build
yarn run test:chrome # Test Chrome extension
yarn build:firefox # => packages/react-devtools-extensions/firefox/build
yarn run test:firefox # Test Firefox extension
yarn build:edge # => packages/react-devtools-extensions/edge/build
yarn run test:edge # Test Edge extension