This is the source code for the React DevTools browser extension.

The easiest way to install this extension is as a browser add-on:

• Chrome web store
• Firefox Add-ons
• Edge Add-ons

You can also build and install this extension from source.

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

To build dependencies from source, run the following command from the root of the repository:

yarn build-for-devtools

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

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