Files
react/packages/react-devtools-extensions
emily8rown bcf97c7564 Devtools disable log dimming strict mode setting (#35207)
<!--

1. Fork [the repository](https://github.com/facebook/react) and create
your branch from `main`.
  2. Run `yarn` in the repository root.
3. If you've fixed a bug or added code that should be tested, add tests!
4. Ensure the test suite passes (`yarn test`). Tip: `yarn test --watch
TestName` is helpful in development.
5. Run `yarn test --prod` to test in the production environment. It
supports the same options as `yarn test`.
6. If you need a debugger, run `yarn test --debug --watch TestName`,
open `chrome://inspect`, and press "Inspect".
7. Format your code with
[prettier](https://github.com/prettier/prettier) (`yarn prettier`).
8. Make sure your code lints (`yarn lint`). Tip: `yarn linc` to only
check changed files.
  9. Run the [Flow](https://flowtype.org/) type checks (`yarn flow`).

-->

## Summary

Currently, every second console log is dimmed, receiving a special style
that indicates to user that it was raising because of [React Strict
Mode](https://react.dev/reference/react/StrictMode) second rendering.
This introduces a setting to disable this.

## How did you test this change?
Test in console-test.js


https://github.com/user-attachments/assets/af6663ac-f79b-4824-95c0-d46b0c8dec12

Browser extension react devtools


https://github.com/user-attachments/assets/7e2ecb7a-fbdf-4c72-ab45-7e3a1c6e5e44

React native dev tools:


https://github.com/user-attachments/assets/d875b3ac-1f27-43f8-8d9d-12b2d65fa6e6

---------

Co-authored-by: Ruslan Lesiutin <28902667+hoxyq@users.noreply.github.com>
2025-12-15 13:41:43 +00:00
..
2021-08-02 09:32:46 -04:00
2020-06-30 12:43:52 +01:00
2019-08-13 21:59:07 -07:00

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