Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/53435
Changelog: [Internal] Support setting `enableStandaloneFuseboxShell: true` in OSS with no custom `BrowserLauncher`
Makes it possible for frameworks to enable the React Native DevTools standalone shell in open source by passing `unstable_experiments: {enableStandaloneFuseboxShell: true}` to `createDevMiddleware()`.
When this experiment is enabled:
* The RNDT shell binary will be prefetched in the background as soon as the dev server starts (into a local cache managed by [DotSlash](https://dotslash-cli.com/)).
* If prefetching is successful, then "Open DevTools" actions will be handled by launching the RNDT frontend in the standalone shell, instead of in Chrome/Edge.
* If prefetching is not successful, then we'll notify the user about the error, and "Open DevTools" will continue to be handled by Chrome/Edge, as before.
* If the user attempts to open DevTools more than once for the same app, the standalone shell will reuse the existing window (as opposed to the current behaviour of always creating a new Chrome/Edge window).
* The appropriate DevTools window will automatically foreground itself upon pausing on a breakpoint.
Reviewed By: huntie
Differential Revision: D78351937
fbshipit-source-id: 6d5baa8fa866760f1d527108cd3c42bcab68cf57
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/53437
Changelog: [Internal]
The React Native DevTools standalone shell is distributed as a DotSlash file that downloads the required binaries lazily. This diff adds support in dev-middleware for a new `BrowserLauncher.unstable_prepareFuseboxShell` method that integrations can use to kick off the download early. Integrations are expected to implement this by calling the `unstable_prepareDebuggerShell` function (added to the `debugger-shell` package in D78413091).
If `BrowserLauncher.unstable_prepareFuseboxShell` returns an error, dev-middleware will fall back to the browser-based launch flow, even for users opted into the `enableStandaloneFuseboxShell` experiment.
Reviewed By: huntie
Differential Revision: D78413092
fbshipit-source-id: 6868bf07e16353fcd83337ae54c87c5a641a0f99
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/52876
Our tooling detected a couple of vulnerabilities in our package.json.
- undici
- on-headers
This change fixes these vulnerabilities.
For the on-headers vulnerabilitiy specifically, it comes from the following dependency chain:
- rn-tester > react-native-community/cli > compression > on-headers.
To fix it, we have to force the resolution to both on-headers and compression.
## Changelog:
[General][Fixed] - Fixed vulnerability on undici and on-headers
Reviewed By: cortinico
Differential Revision: D79086335
fbshipit-source-id: 44f14403196165f5f823030304102dbd0facd0ce
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/52706
This just prepares the repo for the next branch cut.
Changelog:
[Internal] [Changed] -
Reviewed By: cipolleschi
Differential Revision: D78558445
fbshipit-source-id: 2132d560dad447b3685874438387a519587f8554
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/52678
From partner feedback, there's still appetite to support Node 20.x for the next <1y of life. Lower min version to `20.19.4` (Jul 2025) and widen test matrix in CI.
Changelog:
[General][Breaking] - Our new minimum Node version is Node.js 20 (Overrides #51840)
Reviewed By: cortinico
Differential Revision: D78494491
fbshipit-source-id: c8d9dc6250cb11f8a12ca7e761b65f4a8dae9265
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/52359
This is needed ahead of the 81 branch cut.
Changelog:
[Internal] - Bump all packages to 0.81.0-main
Reviewed By: huntie
Differential Revision: D77602196
fbshipit-source-id: 1b52a7d1577783d72aba8d20f98032f29ffcc7df
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/51840
Bumps the minimum version of Node.js in React Native to the current active LTS release (22.x, upgraded from 18.x which is now out of support).
- CI configurations are reduced from `[22, 20, 18]` to `[24, 22]`.
{F1978909878}
See https://nodejs.org/en/about/previous-releases.
Changelog:
[General][Breaking] - Our new minimum Node version is Node.js 22
Reviewed By: yungsters, cortinico
Differential Revision: D76037015
fbshipit-source-id: b6e4b3ee279a9a93d716a13297420bba73f45250
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/49816
Previously, we had different versions of "debug" installed in different packages, mostly because of messed up `yarn.lock` entries.
Also, updated the package, receiving some performance improvements (no relevant breaking changes).
Changelog:
[General][Internal] update and dedupe the npm package "debug"
Reviewed By: huntie
Differential Revision: D70402368
fbshipit-source-id: 5e21bc6d92e0cb45ac1d862f100ef6dc0f21dbc1
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/49714
Changelog: [internal]
This package was only needed for testing but it's actually not used.
Reviewed By: hoxyq
Differential Revision: D70318040
fbshipit-source-id: b57ec74932029368117520646972bfee83706017
Summary:
This package does not seem to be referenced by anything but the tests in `packages/dev-middleware`, so seems like a pretty straightforward change to drop it from `dependencies`.
It only seems to be referenced in `packages/dev-middleware/src/__tests__/ServerUtils.js`
## Changelog:
[INTERNAL] [CHANGED] - Remove selfsigned from dev-middleware dependencies
Pull Request resolved: https://github.com/facebook/react-native/pull/49556
Test Plan: - n/a
Reviewed By: cipolleschi
Differential Revision: D69925928
Pulled By: huntie
fbshipit-source-id: bba41f81dba054505ebf196ad37c7a718a6b16da
Summary:
`dev-middleware` uses `invariant` but does not declare it as a dependency. Under certain hoisting scenarios, or when using pnpm, this will cause `dev-middleware` to fail while being loaded.
## Changelog:
[GENERAL] [FIXED] - add missing `invariant` dependency
Pull Request resolved: https://github.com/facebook/react-native/pull/49047
Test Plan: n/a
Reviewed By: cortinico
Differential Revision: D68835789
Pulled By: huntie
fbshipit-source-id: 13718f4970ed55e6e062b7c2bd719be977abdd0c
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/48975
After cutting 0.78-stable, we need to bump the monorepo packages to `0.79.0-main`
## Changelog:
[Internal] - Bump monorepo packages to `0.79.0-main`
Reviewed By: cortinico, huntie
Differential Revision: D68715005
fbshipit-source-id: cb5abbf05e8638683687be8d61d66b3037111572
Summary:
This change bumps the React Native version in main to 0.77
bypass-github-export-checks
## Changelog:
[General][Changed] - Bump main to 0.77-main
## Facebook:
generated by running `js1 publish react-native 0.77.0-main`
Reviewed By: cortinico
Differential Revision: D62575939
fbshipit-source-id: 6d239fca2eed6cfe51f8c37f78d8dc8730c18b8c
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/44672
Swaps out and simplifies the internals of the debugger launch flow.
We observed that we could achieve better launch/windowing behaviour by passing the `--app` argument directly to the detected Chrome path.
This shares the user's default Chrome profile:
- Fixes unwanted behaviour such as a separate dock icon on macOS (which, when clicked, would launch an unwanted empty window).
- Enables settings persistence.
This change also removes the `LaunchedBrowser.kill` API.
Changelog: [Internal]
Reviewed By: hoxyq
Differential Revision: D57726649
fbshipit-source-id: fc3a715dc852a50559048d1d1c378f64aeb2013f
Summary:
The [Windows fix](https://github.com/cezaraugusto/chromium-edge-launcher/pull/1) was merged and published. We no longer need to use the fork.
## Changelog:
[INTERNAL] [FIXED] - Fix experimental debugger launch flow with Edge on Windows
Pull Request resolved: https://github.com/facebook/react-native/pull/43524
Test Plan: n/a
Reviewed By: robhogan
Differential Revision: D55013623
Pulled By: motiz88
fbshipit-source-id: bff2aa2801dd0dcdd6975dca0a2ec2aa9864ff6f
Summary:
Minor fix to package.json which newer version of npm warn about when publishing, after running `npm pkg fix -ws` on the workspace.
{F1470070110}
## Changelog: [Internal] npm pkg fix -ws
Pull Request resolved: https://github.com/facebook/react-native/pull/43519
Test Plan: eyescloseddog
Reviewed By: cortinico
Differential Revision: D55012872
Pulled By: blakef
fbshipit-source-id: ff3c63a3eefaf56d369219a3d4b32d44d6d842c9
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/42303
Changelog: [Internal]
Adds a coarse-grained mechanism to `inspector-proxy` for distinguishing between legacy and modern debug targets. The guiding principles are:
1. `inspector-proxy` does not interfere in the CDP message stream between the debugger frontend and a modern target, or in the lifecycle of a target.
2. Legacy runtimes (current React Native, React Native Desktop, etc) that rely on `inspector-proxy`'s existing invasive semantics must continue to work seamlessly for now. We'll decide on the right time to deprecate/remove this legacy code in the future.
NOTE: This is an experimental addition to the proxy protocol that may be replaced at any time.
Reviewed By: hoxyq
Differential Revision: D50967795
fbshipit-source-id: bb9c39a8fe755ef3661e2c61507dd324d8dc8894
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/42086
Changelog: [General][Changed] - Update monorepo dependency versions to remove ^
This change will remove the caret for now as we already perform an "align" step everytime we bump a monorepo library. This prevents monorepo library updates to affect existing releases.
The "align" step updates all monorepo libraries to use the updated bumped version: https://fburl.com/code/xfistiph
Reviewed By: huntie
Differential Revision: D52440454
fbshipit-source-id: ff071032f04bc554903dde153c594991163dfe2f
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/41341
* Extends `dev-middleware`'s test utilities to enable testing against an HTTPS server with a self-signed cert.
* Runs the CDP transport integration tests (D51002261) using both HTTP and HTTPS.
* Adds a test to explicitly cover the `ws=...` / `wss=...` variation in `devtoolsFrontendUrl` first introduced in D49158227.
Changelog: [Internal]
Reviewed By: blakef
Differential Revision: D51006835
fbshipit-source-id: df3db8cd865898248cd0d8f307f75949a7f313fd
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/41343
Changelog: [Internal]
Adds basic tests for two-way communication between a debugger (frontend) and a target (backend) using CDP over `inspector-proxy`.
Reviewed By: blakef
Differential Revision: D51002261
fbshipit-source-id: 44e571f89437c26e76ef6e6192b2bf6244665cf0
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/40766
This changeset allows users to opt into the new debugger frontend experience by passing `--experimental-debugger` to `react-native start`. **We are defaulting this option to `true`** for now, but will continue to evaluate this feature before 0.73 ships. It restores Flipper (via `flipper://`) as the default handling for `/open-debugger` (matching 0.72 behaviour) when this flag is not enabled.
Detailed changes:
- Replaces `enableCustomDebuggerFrontend` experiment in `dev-middleware` with `enableNewDebugger`. The latter now hard-swaps between the Flipper and new launch flows.
- Removes now-unused switching of `devtoolsFrontendUrl`.
- Implements `deprecated_openFlipperMiddleware` (matching previous RN CLI implementation).
- Disables "`j` to debug" key handler by default.
- Marks "`j` to debug" and `/open-debugger` console logs as experimental.
Changelog:
[Changed][General] Gate new debugger frontend behind `--experimental-debugger` flag, restore Flipper as base launch flow
Reviewed By: motiz88
Differential Revision: D50084590
fbshipit-source-id: 5234634f20110cb7933b1787bd2c86f645411fff
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/39456
**Fixes new debugger launch flow on Android:**
D49158227 aimed to improve proxy-safe behaviour for remote dev servers by auto-detecting the appropriate server URL for clients using the `Host` header (etc) from the HTTP request. However, this approach broke the local case for Android emulators and externally connected devices since they would originate from a device-relative server hostname — e.g. `10.0.2.2` for the stock Android emulator.
https://pxl.cl/3mVmR
This commit reverts to an explicit approach where callers specify the base URL to the dev server that should be addressible from the development machine — now as a single `serverBaseUrl` option.
**Changes**
- Adds new `serverBaseUrl` option to `createDevMiddleware`, designed to be the base URL value for constructing dev server URLs returned in endpoints such as `/json/list`.
- This changes little for the `localhost` case (now enabling `https://` URLs), but enables remote dev server setups to specify this cleanly.
- Updates call site in `community-cli-plugin`.
Changelog: [Internal]
Reviewed By: robhogan
Differential Revision: D49276125
fbshipit-source-id: 2b6a8507073649832993971aa9d0870f54c9bd44
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/39227
Changelog: [Internal]
1. Adds an `unstable_experiments` option to `createDevMiddleware` in `react-native/dev-middleware`.
2. Adds `enableCustomDebuggerFrontend` (default `false` for now) as an experiment flag controlling whether the new debugger frontend (D48680624, D48682302) is in use. We plan to enable this by default in RN 0.73 after additional testing.
If enabled, the new debugger frontend will only be used for the `/open-debugger` flow
Reviewed By: huntie
Differential Revision: D48602725
fbshipit-source-id: 598865b559478df1f19420daf3633ee6c233362a
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/39146
Adds Microsoft Edge fallback for the `/open-debugger` endpoint when no Chrome installation is found.
Changelog: [Internal]
Reviewed By: motiz88
Differential Revision: D48563386
fbshipit-source-id: 74baba7c03a062bd769b2f9ac0cc35bac0b2ae65
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/39107
Augments D48466760 to report debugger commands (request/response pairs) through `EventReporter`. With the appropriate backend integration, this can help validate the correctness/completeness of the CDP implementation (in the client, proxy and server) and measure the latency of debugger commands - more accurately, the time between the proxy receiving a command from the client and receiving the corresponding response from the server.
Most of the new logic here is in the `DeviceEventReporter` class, which is responsible for associating responses with requests. Requests are kept in a buffer with a 10s TTL which serves as a timeout in case of an unresponsive server.
Changelog: [Internal]
Reviewed By: huntie
Differential Revision: D48480372
fbshipit-source-id: 55360a14bbea05ef8ad1622e0d54f18b47483809
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/39045
## Context
RFC: Decoupling Flipper from React Native core: https://github.com/react-native-community/discussions-and-proposals/pull/641
## Changes
- Relocates `metro-inspector-proxy` source from the Metro repo into the React Native repo as part of the `react-native/dev-middleware` package.
- Drops the `runInspectorProxy` entry point.
- Attaches the Inspector Proxy to the `createDevMiddleware()` API as the new integration point for this functionality.
- Documents migrated endpoints + usage of `createDevMiddleware()` in README.
Changelog: [Internal]
Metro changelog: None (`metro-inspector-proxy` is now an internal component of `react-native`, covered in the [release notes for 0.78.1](https://github.com/facebook/metro/releases/tag/v0.78.1))
Reviewed By: motiz88, blakef
Differential Revision: D48066213
fbshipit-source-id: 3fbef5d881f6f451cb5955dcbbc362c53347437e
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/38718
> NOTE: Replaces https://github.com/facebook/react-native/pull/38240
## Context
RFC: Decoupling Flipper from React Native core: https://github.com/react-native-community/discussions-and-proposals/pull/641
## Changes
To support incoming new React Native packages around debugging (including migrating over [`react-native-community/cli-plugin-metro`](https://github.com/react-native-community/cli/tree/main/packages/cli-plugin-metro)) — which target Node.js and require a build step, this PR adds a minimal shared build setup across the `react-native` monorepo.
The setup is closely inspired/based on the build scripts in Jest, Metro, and React Native CLI — and is a simple set of script wrappers around Babel. These are available as build commands at the root of the repo:
- `yarn build` — Builds all configured packages. Functionally, this:
- Outputs a `dist/` directory with built files.
- Rewrites package.json `"exports"` to update every `./src/*` reference to `./dist/*` (source of truth).
- `scripts/build/babel-register.js` — Allows running all Node.js entry points from source, similar to the current setup in [facebook/metro](https://github.com/facebook/metro). (Example entry point file in this PR: `packages/dev-middleware/src/index.js`)
Build configuration (i.e. Babel config) is shared as a set standard across the monorepo, and **packages are opted-in to requiring a build**, configured in `scripts/build.config.js`.
```
const buildConfig /*: BuildConfig */ = {
// The packages to include for build and their build options
packages: {
'dev-middleware': {target: 'node'},
},
};
```
For now, there is a single `target: 'node'` option — this is necessary as `react-native`, unlike the above other projects, is a repository with packages targeting several runtimes. We may, in future, introduce a build step for other, non-Node, packages — which may be useful for things such as auto-generated TypeScript definitions.
{F1043312771}
**Differences from the Metro setup**
- References (and compiles out) repo-local `scripts/build/babel-register.js` — removing need for an npm-published dependency.
## Current integration points
- **CircleCI** — `yarn build` is added to the `build_npm_package` and `find_and_publish_bumped_packages` jobs.
**New Node.js package(s) are not load bearing quite yet**: There are not yet any built packages added to the dependencies of `packages/react-native/`, so this will be further tested in a later PR (and is actively being done in an internal commit stack).
### Alternative designs
**Per-package config file**
Replace `scripts/build/config.js` with a package-defined key in in `package.json`, similar to Jest's [`publishConfig`](https://github.com/jestjs/jest/blob/1f019afdcdfc54a6664908bb45f343db4e3d0848/packages/jest-cli/package.json#L87C3-L89C4).
```
"buildConfig": {
"type": "node"
},
```
This would be the only customisation required, with a single Babel config still standardised. Another option this might receive in future is `enableTypeScriptCodgeen`.
**Rollup**
More sophisticated build tool for Node.js, used by the React codebase (albeit within a custom script setup as well).
**Lerna and Nx**
- Most sophisticated setup enabling caching and optimised cloud runs.
- Probably the most likely thing we'll move towards at a later stage.
Changelog: [Internal]
Reviewed By: NickGerleman
Differential Revision: D47760330
fbshipit-source-id: 38ec94708ce3d9946a197d80885781e9707c5841
Pieter De Baets
Moti Zilberman
Riccardo Cipolleschi
Nicola Corti
Alex Hunt
Vitali Zaidman
Rubén Norte
Phil Pluckthun
Tommy Nguyen
Andrew Datsenko
Cedric van Putten
Gijs Weterings
Wendi Du
Blake Friedman
Luna Wei
Alex Hunt
Alex Hunt