Summary:
X-link: https://github.com/react/metro/pull/1962
Pull Request resolved: https://github.com/react/react-native/pull/58641
This picks up https://github.com/babel/babel/pull/18241, fixing parsing of arrow function params inside ternaries with Flow (eg `cond ? async (...args) => {} : null`).
(I remember hitting this one internally and not realising where it came from - IIRC it also applies to arrows within conditional types)
The update brings `babel/types` 7.29.7 -> 7.29.8, requiring regeneration of generated flow types. ~~**The `xplat/js/yarn.lock` version will likely need updating to match, or the Babel types sync test will fail**~~ - I've updated specifiers to bring everyone onto that version.
Changelog: [Internal]
X-link: https://github.com/react/metro/pull/1958
Test Plan: CI
Reviewed By: javache
Differential Revision: D121188416
Pulled By: vzaidman
fbshipit-source-id: 60f9c3514b5d6018825423644c47e66b3610b652
Summary:
Pull Request resolved: https://github.com/react/react-native/pull/58391
Regenerate API snapshots after the bump. `flow-api-translator` picks up the fix in https://github.com/facebook/flow/pull/9486, which stops treating `async` functions with no explicit return annotation as `void` — updating `DependencyGraph#end` and `MetroServer#end` to their correct `Promise<void>` return type in `packages/metro/API.md`.
Changelog: [Internal]
Changelog: **[Types]**: `DependencyGraph#end` and `MetroServer#end` are now correctly declared as returning `Promise<void>` rather than `void`
X-link: https://github.com/react/metro/pull/1909
Test Plan:
```
yarn typecheck
yarn lint
yarn build
yarn run verify-api-snapshots
```
All pass.
Reviewed By: mweststrate
Differential Revision: D119090467
Pulled By: javache
fbshipit-source-id: 21b65f90ed511e0cb035917eaf1b0ca399ece855
Summary:
Pull Request resolved: https://github.com/react/react-native/pull/57851
The flow-* packages have support for all latest syntax and is better maintained.
Changelog: [Internal]
Reviewed By: huntie
Differential Revision: D115064040
fbshipit-source-id: 7265eb722910a460c76d0dbde0603cf962fe4e4e
Summary:
Pull Request resolved: https://github.com/react/react-native/pull/57769
Eventually, we will replace the hermes ones with the `flow-{estree,eslint,parser,transform}` packages. This diff first installs the flow ones.
Changelog: [Internal]
Reviewed By: javache
Differential Revision: D114226573
fbshipit-source-id: a693cdac57d2ce77c002a8ac455aceabaadbcf20
Summary:
Pull Request resolved: https://github.com/react/react-native/pull/57258
Reflecting the move to https://github.com/react/react-native , update references in first-party `package.json`s
The `repository.url` field in particular is load-bearing for Trusted Publish.
Changelog: [Internal]
___
Reviewed By: fabriziocucci
Differential Revision: D108986410
fbshipit-source-id: 78513ffefc32ddf417dc1479a4834ebc44240080
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/56887
Drop support for Node.js 20. The minimum supported version is now `^22.13.0 || ^24.3.0 || >= 26.0.0`.
Node.js 20 reached end-of-life in April 2026 and is no longer actively maintained. This aligns React Native with the upcoming Metro requirement.
Changelog:
[General][Breaking] - Require Node.js >= 22.13.0
Reviewed By: christophpurrer, cortinico
Differential Revision: D105685641
fbshipit-source-id: f490e5a13e4289daba98c4d56dd8fdd341aef0db
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/55543
@public
This diff updates several Babel packages to their latest versions:
- `babel/code-frame`: 7.29.0
- `babel/generator`: 7.29.1
- `babel/parser`: 7.29.0
- `babel/template`: 7.28.6
- `babel/traverse`: 7.29.0
- `babel/types`: 7.29.0
Not bumping `core` or `runtime` here because they're a bit more involved, and I'm mainly interested in `traverse`. The packages here are the closure of traverse's dependency graph.
Changelog: [Internal]
Reviewed By: yungsters
Differential Revision: D92983519
fbshipit-source-id: 9f2e71fb5d453606c697d52539f0056b7a29bc45
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/55114
Our official [docs](https://reactnative.dev/docs/set-up-your-environment#node--watchman) require:
> Node 20.19.4 or newer
Currently, our `package.json#engines` fields express this as `"node": ">= 20.19.4"`
This is a bit imprecise because of Node's overlapping release lines - e.g. v24.0.0 is actually older than v20.19.4 (2025-07-15), and the whole v21 line was already EOL before v20.19.4.
The release *date* is relevant because Node.js frequently backports the most important updates - notably, `require(esm)` is already stable in Node 20.19 but is not unflagged in v22 until v22.12.
This makes the `package.json#engines` requirement truer to the documented requirement, dropping some old minors and EOL majors that prevent us using features included in v20.19.
Notably, `require(esm)` is stable and unflagged on all versions supported from this diff.
- v21 and v23 are EOL, so are dropped.
- v22.13 pre-dates 20.19.4 and is the first to have unflagged silent `require(esm)`
- v24.3.0 pre-dates 20.19.4 and is the first to unflag TS-stripping
- Support v25 and newer.
Changelog:
[General][Breaking] Drop support for EOL Node.js lines and old minors.
Reviewed By: cortinico, huntie
Differential Revision: D90467358
fbshipit-source-id: a5fdfb1b93a9d6cffe78eb6811ff7420ab906f44
Summary:
This replaces `glob@^7.0.0` with `tinyglobby@^0.2.15`. `glob@7` has been deprecated for a while and some versions after had security notices released for them. The plan is to backport this PR to `0.81.x` and onwards.
> [!NOTE]
> This is a stopgap solution until `fs.glob` becomes generally available with the EOL of Node v20
Succeeds:
- https://github.com/facebook/react-native/issues/54669
- https://github.com/facebook/react-native/issues/48875
## Changelog:
[GENERAL] [SECURITY] - Replace `glob@^7.0.0` with `tinyglobby@^0.2.15`
Pull Request resolved: https://github.com/facebook/react-native/pull/54737
Test Plan:
- Ran all modified commands manually and `pod install in `rn-tester`
- NOTE: `ios-prebuild`-related scripts haven't been run manually yet
Reviewed By: robhogan
Differential Revision: D88069145
Pulled By: huntie
fbshipit-source-id: 0c455342a4c6d1d6605fd09fe47b418e5d751491
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/54009
Packages haven't been bumped on main ahead of 0.83. This takes care of it.
Changelog:
[Internal] [Changed] -
Reviewed By: cipolleschi, huntie
Differential Revision: D83580515
fbshipit-source-id: 7471e77f74e3fb3b4ee6538a49369b5df1393098
Summary:
`react-native/codegen` uses `babel/parser` and `babel/core` but does not declare dependency on them. Depending on how packages are hoisted (and especially in pnpm setups), this causes crashes during codegen.
Resolves https://github.com/facebook/react-native/issues/52883
## Changelog:
[GENERAL] [FIXED] - Add missing Babel dependencies
Pull Request resolved: https://github.com/facebook/react-native/pull/52884
Test Plan: See https://github.com/facebook/react-native/issues/52883
Reviewed By: cortinico, christophpurrer
Differential Revision: D79103092
Pulled By: robhogan
fbshipit-source-id: ecaf690f994393a652ea7f0d4f30bbabeb23a434
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:
- Update ignore micromatch pattern to filter out `__test_fixtures__` from build output
- Remove `babel/plugin-transform-object-rest-spread`
- Remove `babel/plugin-transform-async-to-generator`
- Remove `babel/plugin-transform-destructuring`
The `package.json:engines:node` field is already set to `>=18` which makes the three Babel transforms that were removed redundant.
## Changelog:
[INTERNAL] [CHANGED] - Remove fixtures files and outdated Babel transforms from `react-native/codegen` build output
Pull Request resolved: https://github.com/facebook/react-native/pull/49916
Test Plan: - Ran against Node 18
Reviewed By: robhogan
Differential Revision: D70885090
Pulled By: cortinico
fbshipit-source-id: 328b75a6031a7ca6a9b3ed170061ffb0a47d6d93
Summary:
`jscodeshift` is only used in one module (`src/generators/components/GenerateViewConfigJs.js`, but depends on a rather complex dependency chain and has a rather large maintenance burden relative to what it's used for and the value it adds in the codebase.
Since the `GenerateViewConfigJs` module creates simple templates, using `babel/core` (and implicitly `babel/template` and `babel/types`) is a lot simpler and changes little code. The only change this introduces to the output are formatting changes (`singleQuote` and `trailingCommas` options are discarded). The code is otherwise functionally identical.
## Changelog:
[INTERNAL] [CHANGED] - Drop jscodeshift dependency from react-native/codegen
Pull Request resolved: https://github.com/facebook/react-native/pull/49641
Test Plan:
This was tested against a React Native build with the `react-native/babel-plugin-codegen` plugina active and using the snapshots in the repo itself. While the snapshots have changed in formatting, none of the outputs change the code's AST.
<details>
<summary>
Example output from <code>react-native/babel-plugin-codegen</code> to supplement the snapshot tests
</summary>
This is the example bundling output of `AndroidSwipeRefreshLayout`. This demonstrates that both the view config output and the `Commands` export continue to be generated correctly.
```js
var _interopRequireDefault = require(_dependencyMap[0]);
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = exports.__INTERNAL_VIEW_CONFIG = exports.Commands = undefined;
var _codegenNativeCommands = _interopRequireDefault(require(_dependencyMap[1]));
var _codegenNativeComponent = _interopRequireDefault(require(_dependencyMap[2]));
var React = _interopRequireWildcard(require(_dependencyMap[3]));
function _getRequireWildcardCache(e) { if ("function" != typeof WeakMap) return null; var r = new WeakMap(), t = new WeakMap(); return (_getRequireWildcardCache = function (e) { return e ? t : r; })(e); }
function _interopRequireWildcard(e, r) { if (!r && e && e.__esModule) return e; if (null === e || "object" != typeof e && "function" != typeof e) return { default: e }; var t = _getRequireWildcardCache(r); if (t && t.has(e)) return t.get(e); var n = { __proto__: null }, a = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var u in e) if ("default" !== u && {}.hasOwnProperty.call(e, u)) { var i = a ? Object.getOwnPropertyDescriptor(e, u) : null; i && (i.get || i.set) ? Object.defineProperty(n, u, i) : n[u] = e[u]; } return n.default = e, t && t.set(e, n), n; }
var NativeComponentRegistry = require(_dependencyMap[4]);
var _require = require(_dependencyMap[5]),
ConditionallyIgnoredEventHandlers = _require.ConditionallyIgnoredEventHandlers;
var _require2 = require(_dependencyMap[6]),
dispatchCommand = _require2.dispatchCommand;
var nativeComponentName = 'AndroidSwipeRefreshLayout';
var __INTERNAL_VIEW_CONFIG = exports.__INTERNAL_VIEW_CONFIG = {
uiViewClassName: "AndroidSwipeRefreshLayout",
directEventTypes: {
topRefresh: {
registrationName: "onRefresh"
}
},
validAttributes: {
enabled: true,
colors: {
process: (req => 'default' in req ? req.default : req)(require(_dependencyMap[7]))
},
progressBackgroundColor: {
process: require(_dependencyMap[8]).default
},
size: true,
progressViewOffset: true,
refreshing: true,
...ConditionallyIgnoredEventHandlers({
onRefresh: true
})
}
};
var _default = exports.default = NativeComponentRegistry.get(nativeComponentName, () => __INTERNAL_VIEW_CONFIG);
var Commands = exports.Commands = {
setNativeRefreshing(ref, value) {
dispatchCommand(ref, "setNativeRefreshing", [value]);
}
};
```
</details>
Reviewed By: yungsters
Differential Revision: D70580474
Pulled By: elicwhite
fbshipit-source-id: 85bc6578b685f19a1565ded8d7e56dc2a1ff1999
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 pull request replaces the use of mkdirp with Node.js's built-in fs.mkdirSync({ recursive: true }) function, which is available in Node.js version 10.12.0 and above. This change reduces the number of external dependencies and simplifies the codebase by using the native capabilities of Node.js.
The motivation behind this change is to remove the unnecessary mkdirp dependency, as Node.js natively supports recursive directory creation since version 10.12.0. This streamlines the code and reduces the reliance on external libraries.
## Changelog:
[INTERNAL] [REMOVED] - Replaced mkdirp with fs.mkdirSync({ recursive: true }) in build scripts and codegen. Requires Node.js 10.12.0 and above.
Pull Request resolved: https://github.com/facebook/react-native/pull/46388
Test Plan: I ran the build and codegen scripts locally with Node.js version 10.12.0 and above after replacing mkdirp, ensuring the scripts work as expected. No issues were encountered, and all processes, including directory creation and file handling, function correctly.
Reviewed By: cortinico
Differential Revision: D62852488
Pulled By: huntie
fbshipit-source-id: 76f44102a80b499521c156308d276a17d279ce38
Rob Hogan