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:
The Flow team is improving the way Flow infers type for primitive literals. This diff prepares the codebase for the new behavior by adding type annotations, or annotations of the form `'abc' as const`.
Changelog: [internal]
Reviewed By: marcoww6
Differential Revision: D75188179
fbshipit-source-id: be50990f23f79cf2d8dae7576af5190218adcafe
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/51488
The Flow team is improving the way Flow infers type for primitive literals.
Announcement: https://fb.workplace.com/groups/flowlang/permalink/1725180268087629/
This diff prepares the codebase for the new behavior by codemoding `as const` annotations.
## Repro steps
1/ Used steps in D73610163 to produce the code changes.
2/ Reverted files where `flow` errored:
```
flow status --show-all-errors > errors.log
node ~/fbsource/fbcode/flow/facebook/error-analyzer.js errors.log |
awk -F':' '{ print $1 }' | sort -u | grep -v 'Total Error Count' |
xargs hg revert --rev .
```
3/ Reverted files that did not improve error count in new Flow mode
```
# Run Flow before change
~/fbsource/fbcode/flow/facebook/flowd status --show-all-errors > errors-0.log
# Run Flow after change
~/fbsource/fbcode/flow/facebook/flowd status --show-all-errors > errors-1.log
# Compute error counts before and after
node ~/fbsource/fbcode/flow/facebook/error-analyzer.js errors-0.log | sort > errors-counts-0.log
node ~/fbsource/fbcode/flow/facebook/error-analyzer.js errors-1.log | sort > errors-counts-1.log
# Revert files with no change in error count
comm -12 errors-counts-0.log errors-counts-1.log | awk -F':' '{ print $1 }' | xargs hg revert --rev .~1
```
## Note to code owners
Due to the large number of errors involved in this rollout, adding `as const` was the most feasible large-scale automated solution. Ideally, a lot of these errors would be fixed by adding other appropriate type annotations. For example instead of annotating
```
type Shape = {type: 'circle', radius: number} | {type: 'square', side: number} | ...;
type ShapeKind = 'circle' | 'square' | 'triangle';
const circle = {
type: "circle" as const, // <-- annotation added here
radius: 42,
};
shape.type as ShapeKind;
takesShape(circle);
```
a more appropriate annotation would be
```
const circle: Circle = { type: "circle"; radius: 42 };
...
```
Changelog: [Internal]
drop-conflicts
Reviewed By: SamChou19815
Differential Revision: D75114154
fbshipit-source-id: 67ee5673816da9625431e2a2466a1e0038386151
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/50809
Configures `react-native/metro-babel-transformer` (used by `react-native/babel-preset`) to parse source using `hermes-parser` to target React 19. This changes components written with Component Syntax to stop generating `forwardRef` calls (because `ref` is now a prop).
Most of this was already accomplished in https://github.com/facebook/react-native/pull/50377 ({D72070021}), but this call site was missed.
Changelog:
[General][Changed] - Configured Hermes Parser to target React 19, resulting in Component Syntax no longer producing `forwardRef` calls.
Reviewed By: elicwhite
Differential Revision: D73279825
fbshipit-source-id: c0d64cb8c0adb22b78c5fbed1b2c386c8b3f3ede
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/46295
X-link: https://github.com/facebook/metro/pull/1343
Updated all **babel** packages in all `package.json` across the repo and ran `npx yarn-deduplicate yarn.lock --scopes babel`. Afterwards, fixed the following issues appearing as a result of that (squashed the following initially separate diffs to make this packages update work atomically):
### (D61336392) updated jest snapshot tests failing
### (D61336393) updated babel types and corrected typings accordingly
The latest babel 7 introduces the following features we need to adjust our types to:
* `JSXNamespacedName` is removed from valid `CallExpression` args ([PR](https://github.com/babel/babel/pull/16421))
* `JSXNamespacedName` is used for namespaced XML properties in things like `<div namespace:name="value">`, but `fn(namespace:name)` doesn't make any sense.
* Dynamic imports are enabled behind a new flag `createImportExpressions` ([PR](https://github.com/babel/babel/pull/15682)), introducing calls such as `import(foo, options)`. These complicate the expected values passed to `import` to be more than just strings.
* Since these are behind a flag that is not expected to be enabled, we can throw an error for now and whoever uses it can add a support to it if needed later.
### Added a new metro ENV ignore
`BROWSERSLIST_ROOT_PATH` is set to `""` explicitly in `xplat/js/BUCK`
and then ignored in
`js/tools/metro-buck-transform-worker/src/EnvVarAllowList.js`
Reviewed By: robhogan
Differential Revision: D61543660
fbshipit-source-id: abbcab72642cf6dc03eed5142eb78dbcc7f63a86
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:
See https://github.com/facebook/react-native/issues/41929 for an issue on multiple monorepo packages being installed. The reason is that `*` resolves to whatever is tagged `latest` on npm.
We still need to fix the fact that our monorepo publish script will update the latest tag everytime we publish. For now, we should remove these from `main` and we will also update this in the 0.73 release branch.
I've left the two peer dependencies on `react-native` to keep at `*`.
```
virtualized-lists/package.json
30: "react-native": "*"
rn-tester/package.json
32: "react-native": "*"
```
As a peer-dependency this won't be a problem in terms of installing a second `react-native`. I thought about updating these to `nightly`, but that would install multiple nightly react-natives as the tag will be updated with each nightly release. I think for now this is fine and something we can revisit.
Things left to do
[ ] Fix monorepo publish script to not update `--latest`
[ ] Remove ^ dependencies on monorepo packages: https://github.com/facebook/react-native/pull/41958
[ ] Re-evaluate how we bump and align monorepo packages when we cut a release branch. I forget if we manually update this when we cut or if there is a script. We may want to change the script and have `main` dependencies point to some fake version like `1000.0.0` and only update these on nightly publishes. Regardless, this will need some discussion.
## Changelog:
[GENERAL] [CHANGED] - Be explicit about what monorepo versions we are using
Pull Request resolved: https://github.com/facebook/react-native/pull/42081
Test Plan: N/A
Reviewed By: cortinico, cipolleschi
Differential Revision: D52435234
Pulled By: lunaleaps
fbshipit-source-id: 67da029d2b637e3997c12c21fe2a9ab9bc344399
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/41067
Bump `hermes-parser` packages to the latest released version.
Changelog: https://github.com/facebook/hermes/blob/main/tools/hermes-parser/js/CHANGELOG.md
Notable changes:
- Added parsing support for `as` expressions as well as `renders*` and renders?`.
- Updated internal prettier version to `3.0.3`.
Changelog: [Internal]
Reviewed By: SamChou19815
Differential Revision: D50395762
fbshipit-source-id: 8a9131ea1b0683e79c7bc74b4df9deafac7450f9
Sam Zhou
George Zahariev
Nicola Corti
Alex Hunt
Panos Vekris
Tim Yung
Jakub Piasecki
Evghenii Nicolaev
Riccardo Cipolleschi
Vitali Zaidman
Alex Taylor (alta)
Jesse Sahli
Blake Friedman
Pieter De Baets
Luna Wei
Moti Zilberman
Pieter Vanderwerff