Switch <Context> to mean <Context.Provider> #28226
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gaearon
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Feb 3, 2024
| @@ -17,7 +17,7 @@ export const REACT_PORTAL_TYPE: symbol = Symbol.for('react.portal'); | |||
| export const REACT_FRAGMENT_TYPE: symbol = Symbol.for('react.fragment'); | |||
| export const REACT_STRICT_MODE_TYPE: symbol = Symbol.for('react.strict_mode'); | |||
| export const REACT_PROFILER_TYPE: symbol = Symbol.for('react.profiler'); | |||
| export const REACT_PROVIDER_TYPE: symbol = Symbol.for('react.provider'); | |||
| export const REACT_CONSUMER_TYPE: symbol = Symbol.for('react.consumer'); | |||
| export const REACT_CONTEXT_TYPE: symbol = Symbol.for('react.context'); | |||
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This is the crux of the change.
Providers shifted from REACT_PROVIDER_TYPE (deleted) to REACT_CONTEXT_TYPE.
Consumers shifted from REACT_CONTEXT_TYPE to REACT_CONSUMER_TYPE (new).
This lets us avoid changing anything about use(Foo) or contextType = Foo and only change how we map a Fiber type to the underlying context.
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gnoff
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Feb 5, 2024
| case REACT_PROVIDER_TYPE: | ||
| const provider: ReactProviderType<any> = (type: any); | ||
| return getContextName(provider._context) + '.Provider'; | ||
| return getContextName(context) + '.Provider'; |
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I imagine we'll be in a world soon where you never think about .Provider and just assume rendering a context provides values and "using" a context reads values. In this context does it make sense for the component name to carry forward this notion of .Provider? or should we switch it and call FooContext.Provider FooContext instead of calling FooContext FooContext.Provider?
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Hmm yea, I'd be happy to drop but figured it might invalidate snapshot tests or stuff like this. Maybe as a separate change later if this one settles?
hoxyq
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Feb 7, 2024
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gaearon
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Feb 11, 2024
| if ((context: any)._context !== undefined) { | ||
| // Support inspection of pre-19+ providers. | ||
| context = (context: any)._context; | ||
| } |
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Note: this isn't feature-flagged because it needs to support both.
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gaearon
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Feb 11, 2024
| props: Object, | ||
| ): void { | ||
| const context = type._context; |
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Moved this to the callsite.
gaearon
commented
Feb 11, 2024
| @@ -1703,31 +1704,6 @@ function renderContextConsumer( | |||
| context: ReactContext<any>, | |||
| props: Object, | |||
| ): void { | |||
| // The logic below for Context differs depending on PROD or DEV mode. In | |||
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Moved this to the callsite.
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|
Rebased and added a feature flag. I didn't keep the old warnings but I did preserve the codepaths and data structures to make it safer to land. The feature flag is hardcoded |
github-actions bot
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Feb 13, 2024
Previously, `<Context>` was equivalent to `<Context.Consumer>`. However,
since the introduction of Hooks, the `<Context.Consumer>` API is rarely
used. The goal here is to make the common case cleaner:
```js
const ThemeContext = createContext('light')
function App() {
return (
<ThemeContext value="dark">
...
</ThemeContext>
)
}
function Button() {
const theme = use(ThemeContext)
// ...
}
```
This is technically a breaking change, but we've been warning about
rendering `<Context>` directly for several years by now, so it's
unlikely much code in the wild depends on the old behavior. [Proof that
it warns today (check
console).](https://codesandbox.io/p/sandbox/peaceful-nobel-pdxtfl)
---
**The relevant commit is 5696782.** It
switches `createContext` implementation so that `Context.Provider ===
Context`.
The main assumption that changed is that a Provider's fiber type is now
the context itself (rather than an intermediate object). Whereas a
Consumer's fiber type is now always an intermediate object (rather than
it being sometimes the context itself and sometimes an intermediate
object).
My methodology was to start with the relevant symbols, work tags, and
types, and work my way backwards to all usages.
This might break tooling that depends on inspecting React's internal
fields. I've added DevTools support in the second commit. This didn't
need explicit versioning—the structure tells us enough.
DiffTrain build for [14fd963](14fd963)
This was referenced Feb 20, 2024
hoxyq
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Feb 22, 2024
Full list of changes (not a public CHANGELOG): * feature[REMOVED][devtools]: turn off / hide location based component filters ([hoxyq](https://github.com/hoxyq) in [#28417](#28417)) * Add useSyncExternalStore and useTransition to getPrimitiveStackCache ([jamesbvaughan](https://github.com/jamesbvaughan) in [#28399](#28399)) * chore[devtools]: use react-window from npm and bump react-virtualized-auto-sizer to ^1.0.23 ([hoxyq](https://github.com/hoxyq) in [#28408](#28408)) * Pass ref as normal prop ([acdlite](https://github.com/acdlite) in [#28348](#28348)) * Combine createElement and JSX modules ([acdlite](https://github.com/acdlite) in [#28320](#28320)) * [Debug Tools] Always use includeHooksSource option ([sebmarkbage](https://github.com/sebmarkbage) in [#28309](#28309)) * Revert "[Tests] Reset modules by default" ([acdlite](https://github.com/acdlite) in [#28318](#28318)) * Switch <Context> to mean <Context.Provider> ([gaearon](https://github.com/gaearon) in [#28226](#28226)) * [Debug Tools] Introspect Promises in use() ([sebmarkbage](https://github.com/sebmarkbage) in [#28297](#28297)) * fix[devtools/useModalDismissSignal]: use getRootNode for shadow root case support ([hoxyq](https://github.com/hoxyq) in [#28145](#28145)) * fix: define IS_ACT_ENVIRONMENT global for tests with concurrent mode and synchronous act ([hoxyq](https://github.com/hoxyq) in [#28296](#28296)) * chore: gate legacy apis for react-devtools-shell ([hoxyq](https://github.com/hoxyq) in [#28273](#28273)) * DevTools: Add support for use(Context) ([eps1lon](https://github.com/eps1lon) in [#28233](#28233)) * Remove __self and __source location from elements ([sebmarkbage](https://github.com/sebmarkbage) in [#28265](#28265)) * chore: use versioned render in inspectedElement test ([hoxyq](https://github.com/hoxyq) in [#28246](#28246)) * chore: use versioned render in TimelineProfiler test and gate some for legacy rendering ([hoxyq](https://github.com/hoxyq) in [#28218](#28218)) * [Tests] Reset modules by default ([rickhanlonii](https://github.com/rickhanlonii) in [#28254](#28254)) * chore: use versioned render in preprocessData test and gate some for … ([hoxyq](https://github.com/hoxyq) in [#28219](#28219)) * chore: use versioned render in storeStressSync test and gate them for legacy rendering ([hoxyq](https://github.com/hoxyq) in [#28216](#28216)) * Patch devtools before running useMemo function in strict mode ([gsathya](https://github.com/gsathya) in [#28249](#28249)) * chore: use versioned render in storeComponentFilters test ([hoxyq](https://github.com/hoxyq) in [#28241](#28241)) * chore: use versioned render in profilerContext test ([hoxyq](https://github.com/hoxyq) in [#28243](#28243)) * chore: use versioned render in profilingCommitTreeBuilder test and gate some for legacy rendering ([hoxyq](https://github.com/hoxyq) in [#28236](#28236)) * chore: use versioned render in profilingHostRoot test and gate some for legacy rendering ([hoxyq](https://github.com/hoxyq) in [#28237](#28237)) * chore: use versioned render in profilingCache test ([hoxyq](https://github.com/hoxyq) in [#28242](#28242)) * chore: use versioned render in ownersListContext test ([hoxyq](https://github.com/hoxyq) in [#28240](#28240)) * chore: use versioned render in editing test ([hoxyq](https://github.com/hoxyq) in [#28239](#28239)) * chore: use versioned render in treeContext test ([hoxyq](https://github.com/hoxyq) in [#28245](#28245)) * chore: use versioned render in store test ([hoxyq](https://github.com/hoxyq) in [#28244](#28244)) * chore: use versioned render in profilerStore test ([hoxyq](https://github.com/hoxyq) in [#28238](#28238)) * chore: use versioned render in profilingCharts test ([hoxyq](https://github.com/hoxyq) in [#28235](#28235)) * chore: use versioned render in profilerChangeDescriptions test ([hoxyq](https://github.com/hoxyq) in [#28221](#28221)) * chore: use versioned render in storeOwners test ([hoxyq](https://github.com/hoxyq) in [#28215](#28215)) * chore: use versioned render in componentStacks test ([hoxyq](https://github.com/hoxyq) in [#28214](#28214)) * chore: use versioned render in console test ([hoxyq](https://github.com/hoxyq) in [#28213](#28213)) * chore: use versioned render in useEditableValue test ([hoxyq](https://github.com/hoxyq) in [#28212](#28212)) * chore: use versioned render in FastRefreshDevToolsIntegration test ([hoxyq](https://github.com/hoxyq) in [#28211](#28211)) * chore: add versioned render implementation for DevTools tests ([hoxyq](https://github.com/hoxyq) in [#28210](#28210)) * chore: add single versioned implementation of act for DevTools tests ([hoxyq](https://github.com/hoxyq) in [#28186](#28186)) * DevTools: Add support for useFormState ([eps1lon](https://github.com/eps1lon) in [#28232](#28232)) * DevTools: Add support for useOptimistic Hook ([eps1lon](https://github.com/eps1lon) in [#27982](#27982)) * Add stable React.act export ([acdlite](https://github.com/acdlite) in [#28160](#28160)) * [flow] upgrade to 0.225.1 ([kassens](https://github.com/kassens) in [#27871](#27871)) * fix[devtools/e2e]: add fallback for act in integration tests ([hoxyq](https://github.com/hoxyq) in [#27842](#27842)) * Add stable concurrent option to react-test-renderer ([jackpope](https://github.com/jackpope) in [#27804](#27804)) * Update act references in tests ([gnoff](https://github.com/gnoff) in [#27805](#27805)) * Flow: make more objects exact ([kassens](https://github.com/kassens) in [#27790](#27790))
huozhi
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Feb 23, 2024
### React upstream changes - facebook/react#28333 - facebook/react#28334 - facebook/react#28378 - facebook/react#28377 - facebook/react#28376 - facebook/react#28338 - facebook/react#28331 - facebook/react#28336 - facebook/react#28320 - facebook/react#28317 - facebook/react#28375 - facebook/react#28367 - facebook/react#28380 - facebook/react#28368 - facebook/react#28343 - facebook/react#28355 - facebook/react#28374 - facebook/react#28362 - facebook/react#28344 - facebook/react#28339 - facebook/react#28353 - facebook/react#28346 - facebook/react#25790 - facebook/react#28352 - facebook/react#28326 - facebook/react#27688 - facebook/react#28329 - facebook/react#28332 - facebook/react#28340 - facebook/react#28327 - facebook/react#28325 - facebook/react#28324 - facebook/react#28309 - facebook/react#28310 - facebook/react#28307 - facebook/react#28306 - facebook/react#28315 - facebook/react#28318 - facebook/react#28226 - facebook/react#28308 - facebook/react#27563 - facebook/react#28297 - facebook/react#28286 - facebook/react#28284 - facebook/react#28275 - facebook/react#28145 - facebook/react#28301 - facebook/react#28224 - facebook/react#28152 - facebook/react#28296 - facebook/react#28294 - facebook/react#28279 - facebook/react#28273 - facebook/react#28269 - facebook/react#28376 - facebook/react#28338 - facebook/react#28331 - facebook/react#28336 - facebook/react#28320 - facebook/react#28317 - facebook/react#28375 - facebook/react#28367 - facebook/react#28380 - facebook/react#28368 - facebook/react#28343 - facebook/react#28355 - facebook/react#28374 - facebook/react#28362 - facebook/react#28344 - facebook/react#28339 - facebook/react#28353 - facebook/react#28346 - facebook/react#25790 - facebook/react#28352 - facebook/react#28326 - facebook/react#27688 - facebook/react#28329 - facebook/react#28332 - facebook/react#28340 - facebook/react#28327 - facebook/react#28325 - facebook/react#28324 - facebook/react#28309 - facebook/react#28310 - facebook/react#28307 - facebook/react#28306 - facebook/react#28315 - facebook/react#28318 - facebook/react#28226 - facebook/react#28308 - facebook/react#27563 - facebook/react#28297 - facebook/react#28286 - facebook/react#28284 - facebook/react#28275 - facebook/react#28145 - facebook/react#28301 - facebook/react#28224 - facebook/react#28152 - facebook/react#28296 - facebook/react#28294 - facebook/react#28279 - facebook/react#28273 - facebook/react#28269 Closes NEXT-2542 Disable ppr test for strict mode for now, @acdlite will check it and we'll sync again
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Apr 15, 2024
Previously, `<Context>` was equivalent to `<Context.Consumer>`. However,
since the introduction of Hooks, the `<Context.Consumer>` API is rarely
used. The goal here is to make the common case cleaner:
```js
const ThemeContext = createContext('light')
function App() {
return (
<ThemeContext value="dark">
...
</ThemeContext>
)
}
function Button() {
const theme = use(ThemeContext)
// ...
}
```
This is technically a breaking change, but we've been warning about
rendering `<Context>` directly for several years by now, so it's
unlikely much code in the wild depends on the old behavior. [Proof that
it warns today (check
console).](https://codesandbox.io/p/sandbox/peaceful-nobel-pdxtfl)
---
**The relevant commit is 5696782.** It
switches `createContext` implementation so that `Context.Provider ===
Context`.
The main assumption that changed is that a Provider's fiber type is now
the context itself (rather than an intermediate object). Whereas a
Consumer's fiber type is now always an intermediate object (rather than
it being sometimes the context itself and sometimes an intermediate
object).
My methodology was to start with the relevant symbols, work tags, and
types, and work my way backwards to all usages.
This might break tooling that depends on inspecting React's internal
fields. I've added DevTools support in the second commit. This didn't
need explicit versioning—the structure tells us enough.
EdisonVan
pushed a commit
to EdisonVan/react
that referenced
this pull request
Apr 15, 2024
Full list of changes (not a public CHANGELOG): * feature[REMOVED][devtools]: turn off / hide location based component filters ([hoxyq](https://github.com/hoxyq) in [facebook#28417](facebook#28417)) * Add useSyncExternalStore and useTransition to getPrimitiveStackCache ([jamesbvaughan](https://github.com/jamesbvaughan) in [facebook#28399](facebook#28399)) * chore[devtools]: use react-window from npm and bump react-virtualized-auto-sizer to ^1.0.23 ([hoxyq](https://github.com/hoxyq) in [facebook#28408](facebook#28408)) * Pass ref as normal prop ([acdlite](https://github.com/acdlite) in [facebook#28348](facebook#28348)) * Combine createElement and JSX modules ([acdlite](https://github.com/acdlite) in [facebook#28320](facebook#28320)) * [Debug Tools] Always use includeHooksSource option ([sebmarkbage](https://github.com/sebmarkbage) in [facebook#28309](facebook#28309)) * Revert "[Tests] Reset modules by default" ([acdlite](https://github.com/acdlite) in [facebook#28318](facebook#28318)) * Switch <Context> to mean <Context.Provider> ([gaearon](https://github.com/gaearon) in [facebook#28226](facebook#28226)) * [Debug Tools] Introspect Promises in use() ([sebmarkbage](https://github.com/sebmarkbage) in [facebook#28297](facebook#28297)) * fix[devtools/useModalDismissSignal]: use getRootNode for shadow root case support ([hoxyq](https://github.com/hoxyq) in [facebook#28145](facebook#28145)) * fix: define IS_ACT_ENVIRONMENT global for tests with concurrent mode and synchronous act ([hoxyq](https://github.com/hoxyq) in [facebook#28296](facebook#28296)) * chore: gate legacy apis for react-devtools-shell ([hoxyq](https://github.com/hoxyq) in [facebook#28273](facebook#28273)) * DevTools: Add support for use(Context) ([eps1lon](https://github.com/eps1lon) in [facebook#28233](facebook#28233)) * Remove __self and __source location from elements ([sebmarkbage](https://github.com/sebmarkbage) in [facebook#28265](facebook#28265)) * chore: use versioned render in inspectedElement test ([hoxyq](https://github.com/hoxyq) in [facebook#28246](facebook#28246)) * chore: use versioned render in TimelineProfiler test and gate some for legacy rendering ([hoxyq](https://github.com/hoxyq) in [facebook#28218](facebook#28218)) * [Tests] Reset modules by default ([rickhanlonii](https://github.com/rickhanlonii) in [facebook#28254](facebook#28254)) * chore: use versioned render in preprocessData test and gate some for … ([hoxyq](https://github.com/hoxyq) in [facebook#28219](facebook#28219)) * chore: use versioned render in storeStressSync test and gate them for legacy rendering ([hoxyq](https://github.com/hoxyq) in [facebook#28216](facebook#28216)) * Patch devtools before running useMemo function in strict mode ([gsathya](https://github.com/gsathya) in [facebook#28249](facebook#28249)) * chore: use versioned render in storeComponentFilters test ([hoxyq](https://github.com/hoxyq) in [facebook#28241](facebook#28241)) * chore: use versioned render in profilerContext test ([hoxyq](https://github.com/hoxyq) in [facebook#28243](facebook#28243)) * chore: use versioned render in profilingCommitTreeBuilder test and gate some for legacy rendering ([hoxyq](https://github.com/hoxyq) in [facebook#28236](facebook#28236)) * chore: use versioned render in profilingHostRoot test and gate some for legacy rendering ([hoxyq](https://github.com/hoxyq) in [facebook#28237](facebook#28237)) * chore: use versioned render in profilingCache test ([hoxyq](https://github.com/hoxyq) in [facebook#28242](facebook#28242)) * chore: use versioned render in ownersListContext test ([hoxyq](https://github.com/hoxyq) in [facebook#28240](facebook#28240)) * chore: use versioned render in editing test ([hoxyq](https://github.com/hoxyq) in [facebook#28239](facebook#28239)) * chore: use versioned render in treeContext test ([hoxyq](https://github.com/hoxyq) in [facebook#28245](facebook#28245)) * chore: use versioned render in store test ([hoxyq](https://github.com/hoxyq) in [facebook#28244](facebook#28244)) * chore: use versioned render in profilerStore test ([hoxyq](https://github.com/hoxyq) in [facebook#28238](facebook#28238)) * chore: use versioned render in profilingCharts test ([hoxyq](https://github.com/hoxyq) in [facebook#28235](facebook#28235)) * chore: use versioned render in profilerChangeDescriptions test ([hoxyq](https://github.com/hoxyq) in [facebook#28221](facebook#28221)) * chore: use versioned render in storeOwners test ([hoxyq](https://github.com/hoxyq) in [facebook#28215](facebook#28215)) * chore: use versioned render in componentStacks test ([hoxyq](https://github.com/hoxyq) in [facebook#28214](facebook#28214)) * chore: use versioned render in console test ([hoxyq](https://github.com/hoxyq) in [facebook#28213](facebook#28213)) * chore: use versioned render in useEditableValue test ([hoxyq](https://github.com/hoxyq) in [facebook#28212](facebook#28212)) * chore: use versioned render in FastRefreshDevToolsIntegration test ([hoxyq](https://github.com/hoxyq) in [facebook#28211](facebook#28211)) * chore: add versioned render implementation for DevTools tests ([hoxyq](https://github.com/hoxyq) in [facebook#28210](facebook#28210)) * chore: add single versioned implementation of act for DevTools tests ([hoxyq](https://github.com/hoxyq) in [facebook#28186](facebook#28186)) * DevTools: Add support for useFormState ([eps1lon](https://github.com/eps1lon) in [facebook#28232](facebook#28232)) * DevTools: Add support for useOptimistic Hook ([eps1lon](https://github.com/eps1lon) in [facebook#27982](facebook#27982)) * Add stable React.act export ([acdlite](https://github.com/acdlite) in [facebook#28160](facebook#28160)) * [flow] upgrade to 0.225.1 ([kassens](https://github.com/kassens) in [facebook#27871](facebook#27871)) * fix[devtools/e2e]: add fallback for act in integration tests ([hoxyq](https://github.com/hoxyq) in [facebook#27842](facebook#27842)) * Add stable concurrent option to react-test-renderer ([jackpope](https://github.com/jackpope) in [facebook#27804](facebook#27804)) * Update act references in tests ([gnoff](https://github.com/gnoff) in [facebook#27805](facebook#27805)) * Flow: make more objects exact ([kassens](https://github.com/kassens) in [facebook#27790](facebook#27790))
bigfootjon
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Apr 18, 2024
Previously, `<Context>` was equivalent to `<Context.Consumer>`. However,
since the introduction of Hooks, the `<Context.Consumer>` API is rarely
used. The goal here is to make the common case cleaner:
```js
const ThemeContext = createContext('light')
function App() {
return (
<ThemeContext value="dark">
...
</ThemeContext>
)
}
function Button() {
const theme = use(ThemeContext)
// ...
}
```
This is technically a breaking change, but we've been warning about
rendering `<Context>` directly for several years by now, so it's
unlikely much code in the wild depends on the old behavior. [Proof that
it warns today (check
console).](https://codesandbox.io/p/sandbox/peaceful-nobel-pdxtfl)
---
**The relevant commit is 5696782.** It
switches `createContext` implementation so that `Context.Provider ===
Context`.
The main assumption that changed is that a Provider's fiber type is now
the context itself (rather than an intermediate object). Whereas a
Consumer's fiber type is now always an intermediate object (rather than
it being sometimes the context itself and sometimes an intermediate
object).
My methodology was to start with the relevant symbols, work tags, and
types, and work my way backwards to all usages.
This might break tooling that depends on inspecting React's internal
fields. I've added DevTools support in the second commit. This didn't
need explicit versioning—the structure tells us enough.
DiffTrain build for commit 14fd963.
FMota0
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Nov 26, 2024
Make prepass backwards compatible with react v19, it was necessary to handle with the following changes in React: - facebook/react#28789 - facebook/react#28813 - facebook/react#28226
FMota0
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Make prepass backwards compatible with react v19, it was necessary to handle with the following changes in React: - facebook/react#28789 - facebook/react#28813 - facebook/react#28226
FMota0
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Make prepass backwards compatible with react v19, it was necessary to handle with the following changes in React: - facebook/react#28789 - facebook/react#28813 - facebook/react#28226
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this pull request
Jan 17, 2025
This PR contains the following updates: | Package | Type | Update | Change | |---|---|---|---| | [@types/react](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/react) ([source](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/react)) | devDependencies | major | [`18.3.18` -> `19.0.7`](https://renovatebot.com/diffs/npm/@types%2freact/18.3.18/19.0.7) | | [@types/react-dom](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/react-dom) ([source](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/react-dom)) | devDependencies | major | [`18.3.5` -> `19.0.3`](https://renovatebot.com/diffs/npm/@types%2freact-dom/18.3.5/19.0.3) | | [react](https://react.dev/) ([source](https://github.com/facebook/react/tree/HEAD/packages/react)) | dependencies | major | [`18.3.1` -> `19.0.0`](https://renovatebot.com/diffs/npm/react/18.3.1/19.0.0) | | [react-dom](https://react.dev/) ([source](https://github.com/facebook/react/tree/HEAD/packages/react-dom)) | dependencies | major | [`18.3.1` -> `19.0.0`](https://renovatebot.com/diffs/npm/react-dom/18.3.1/19.0.0) | --- ### Release Notes <details> <summary>facebook/react (react)</summary> ### [`v19.0.0`](https://github.com/facebook/react/blob/HEAD/CHANGELOG.md#1900-December-5-2024) [Compare Source](https://github.com/facebook/react/compare/v18.3.1...v19.0.0) Below is a list of all new features, APIs, deprecations, and breaking changes. Read [React 19 release post](https://react.dev/blog/2024/04/25/react-19) and [React 19 upgrade guide](https://react.dev/blog/2024/04/25/react-19-upgrade-guide) for more information. > Note: To help make the upgrade to React 19 easier, we’ve published a [email protected] release that is identical to 18.2 but adds warnings for deprecated APIs and other changes that are needed for React 19. We recommend upgrading to React 18.3.1 first to help identify any issues before upgrading to React 19. ##### New Features ##### React - Actions: `startTransition` can now accept async functions. Functions passed to `startTransition` are called “Actions”. A given Transition can include one or more Actions which update state in the background and update the UI with one commit. In addition to updating state, Actions can now perform side effects including async requests, and the Action will wait for the work to finish before finishing the Transition. This feature allows Transitions to include side effects like `fetch()` in the pending state, and provides support for error handling, and optimistic updates. - `useActionState`: is a new hook to order Actions inside of a Transition with access to the state of the action, and the pending state. It accepts a reducer that can call Actions, and the initial state used for first render. It also accepts an optional string that is used if the action is passed to a form `action` prop to support progressive enhancement in forms. - `useOptimistic`: is a new hook to update state while a Transition is in progress. It returns the state, and a set function that can be called inside a transition to “optimistically” update the state to expected final value immediately while the Transition completes in the background. When the transition finishes, the state is updated to the new value. - `use`: is a new API that allows reading resources in render. In React 19, `use` accepts a promise or Context. If provided a promise, `use` will suspend until a value is resolved. `use` can only be used in render but can be called conditionally. - `ref` as a prop: Refs can now be used as props, removing the need for `forwardRef`. - **Suspense sibling pre-warming**: When a component suspends, React will immediately commit the fallback of the nearest Suspense boundary, without waiting for the entire sibling tree to render. After the fallback commits, React will schedule another render for the suspended siblings to “pre-warm” lazy requests. ##### React DOM Client - `<form> action` prop: Form Actions allow you to manage forms automatically and integrate with `useFormStatus`. When a `<form> action` succeeds, React will automatically reset the form for uncontrolled components. The form can be reset manually with the new `requestFormReset` API. - `<button> and <input> formAction` prop: Actions can be passed to the `formAction` prop to configure form submission behavior. This allows using different Actions depending on the input. - `useFormStatus`: is a new hook that provides the status of the parent `<form> action`, as if the form was a Context provider. The hook returns the values: `pending`, `data`, `method`, and `action`. - Support for Document Metadata: We’ve added support for rendering document metadata tags in components natively. React will automatically hoist them into the `<head>` section of the document. - Support for Stylesheets: React 19 will ensure stylesheets are inserted into the `<head>` on the client before revealing the content of a Suspense boundary that depends on that stylesheet. - Support for async scripts: Async scripts can be rendered anywhere in the component tree and React will handle ordering and deduplication. - Support for preloading resources: React 19 ships with `preinit`, `preload`, `prefetchDNS`, and `preconnect` APIs to optimize initial page loads by moving discovery of additional resources like fonts out of stylesheet loading. They can also be used to prefetch resources used by an anticipated navigation. ##### React DOM Server - Added `prerender` and `prerenderToNodeStream` APIs for static site generation. They are designed to work with streaming environments like Node.js Streams and Web Streams. Unlike `renderToString`, they wait for data to load for HTML generation. ##### React Server Components - RSC features such as directives, server components, and server functions are now stable. This means libraries that ship with Server Components can now target React 19 as a peer dependency with a react-server export condition for use in frameworks that support the Full-stack React Architecture. The underlying APIs used to implement a React Server Components bundler or framework do not follow semver and may break between minors in React 19.x. See [docs](https://19.react.dev/reference/rsc/server-components) for how to support React Server Components. ##### Deprecations - Deprecated: `element.ref` access: React 19 supports ref as a prop, so we’re deprecating `element.ref` in favor of `element.props.ref`. Accessing will result in a warning. - `react-test-renderer`: In React 19, react-test-renderer logs a deprecation warning and has switched to concurrent rendering for web usage. We recommend migrating your tests to [@​testing-library/react](https://testing-library.com/docs/react-testing-library/intro/) or [@​testing-library/react-native](https://testing-library.com/docs/react-native-testing-library/intro) ##### Breaking Changes React 19 brings in a number of breaking changes, including the removals of long-deprecated APIs. We recommend first upgrading to `18.3.1`, where we've added additional deprecation warnings. Check out the [upgrade guide](https://19.react.dev/blog/2024/04/25/react-19-upgrade-guide) for more details and guidance on codemodding. ##### React - New JSX Transform is now required: We introduced [a new JSX transform](https://legacy.reactjs.org/blog/2020/09/22/introducing-the-new-jsx-transform.html) in 2020 to improve bundle size and use JSX without importing React. In React 19, we’re adding additional improvements like using ref as a prop and JSX speed improvements that require the new transform. - Errors in render are not re-thrown: Errors that are not caught by an Error Boundary are now reported to window.reportError. Errors that are caught by an Error Boundary are reported to console.error. We’ve introduced `onUncaughtError` and `onCaughtError` methods to `createRoot` and `hydrateRoot` to customize this error handling. - Removed: `propTypes`: Using `propTypes` will now be silently ignored. If required, we recommend migrating to TypeScript or another type-checking solution. - Removed: `defaultProps` for functions: ES6 default parameters can be used in place. Class components continue to support `defaultProps` since there is no ES6 alternative. - Removed: `contextTypes` and `getChildContext`: Legacy Context for class components has been removed in favor of the `contextType` API. - Removed: string refs: Any usage of string refs need to be migrated to ref callbacks. - Removed: Module pattern factories: A rarely used pattern that can be migrated to regular functions. - Removed: `React.createFactory`: Now that JSX is broadly supported, all `createFactory` usage can be migrated to JSX components. - Removed: `react-test-renderer/shallow`: This has been a re-export of [react-shallow-renderer](https://github.com/enzymejs/react-shallow-renderer) since React 18. If needed, you can continue to use the third-party package directly. We recommend using [@​testing-library/react](https://testing-library.com/docs/react-testing-library/intro/) or [@​testing-library/react-native](https://testing-library.com/docs/react-native-testing-library/intro) instead. ##### React DOM - Removed: `react-dom/test-utils`: We’ve moved `act` from `react-dom/test-utils` to react. All other utilities have been removed. - Removed: `ReactDOM`.`render`, `ReactDOM`.`hydrate`: These have been removed in favor of the concurrent equivalents: `ReactDOM`.`createRoot` and `ReactDOM.hydrateRoot`. - Removed: `unmountComponentAtNode`: Removed in favor of `root.unmount()`. - Removed: `ReactDOM`.`findDOMNode`: You can replace `ReactDOM`.`findDOMNode` with DOM Refs. ##### Notable Changes ##### React - `<Context>` as a provider: You can now render `<Context>` as a provider instead of `<Context.Provider>`. - Cleanup functions for refs: When the component unmounts, React will call the cleanup function returned from the ref callback. - `useDeferredValue` initial value argument: When provided, `useDeferredValue` will return the initial value for the initial render of a component, then schedule a re-render in the background with the `deferredValue` returned. - Support for Custom Elements: React 19 now passes all tests on [Custom Elements Everywhere](https://custom-elements-everywhere.com/). - StrictMode changes: `useMemo` and `useCallback` will now reuse the memoized results from the first render, during the second render. Additionally, StrictMode will now double-invoke ref callback functions on initial mount. - UMD builds removed: To load React 19 with a script tag, we recommend using an ESM-based CDN such as [esm.sh](http://esm.sh). ##### React DOM - Diffs for hydration errors: In the case of a mismatch, React 19 logs a single error with a diff of the mismatched content. - Compatibility with third-party scripts and extensions: React will now force a client re-render to fix up any mismatched content caused by elements inserted by third-party JS. ##### TypeScript Changes The most common changes can be codemodded with `npx types-react-codemod@latest preset-19 ./path-to-your-react-ts-files`. - Removed deprecated TypeScript types: - `ReactChild` (replacement: `React.ReactElement | number | string)` - `ReactFragment` (replacement: `Iterable<React.ReactNode>`) - `ReactNodeArray` (replacement: `ReadonlyArray<React.ReactNode>`) - `ReactText` (replacement: `number | string`) - `VoidFunctionComponent` (replacement: `FunctionComponent`) - `VFC` (replacement: `FC`) - Moved to `prop-types`: `Requireable`, `ValidationMap`, `Validator`, `WeakValidationMap` - Moved to `create-react-class`: `ClassicComponentClass`, `ClassicComponent`, `ClassicElement`, `ComponentSpec`, `Mixin`, `ReactChildren`, `ReactHTML`, `ReactSVG`, `SFCFactory` - Disallow implicit return in refs: refs can now accept cleanup functions. When you return something else, we can’t tell if you intentionally returned something not meant to clean up or returned the wrong value. Implicit returns of anything but functions will now error. - Require initial argument to `useRef`: The initial argument is now required to match `useState`, `createContext` etc - Refs are mutable by default: Ref objects returned from `useRef()` are now always mutable instead of sometimes being immutable. This feature was too confusing for users and conflicted with legit cases where refs were managed by React and manually written to. - Strict `ReactElement` typing: The props of React elements now default to `unknown` instead of `any` if the element is typed as `ReactElement` - JSX namespace in TypeScript: The global `JSX` namespace is removed to improve interoperability with other libraries using JSX. Instead, the JSX namespace is available from the React package: `import { JSX } from 'react'` - Better `useReducer` typings: Most `useReducer` usage should not require explicit type arguments.\ For example, ```diff -useReducer<React.Reducer<State, Action>>(reducer) +useReducer(reducer) ``` or ```diff -useReducer<React.Reducer<State, Action>>(reducer) +useReducer<State, Action>(reducer) ``` ##### All Changes ##### React - Add support for async Actions ([#​26621](https://github.com/facebook/react/pull/26621), [#​26726](https://github.com/facebook/react/pull/26726), [#​28078](https://github.com/facebook/react/pull/28078), [#​28097](https://github.com/facebook/react/pull/28097), [#​29226](https://github.com/facebook/react/pull/29226), [#​29618](https://github.com/facebook/react/pull/29618), [#​29670](https://github.com/facebook/react/pull/29670), [#​26716](https://github.com/facebook/react/pull/26716) by [@​acdlite](https://github.com/acdlite) and [@​sebmarkbage](https://github.com/sebmarkbage)) - Add `useActionState()` hook to update state based on the result of a Form Action ([#​27270](https://github.com/facebook/react/pull/27270), [#​27278](https://github.com/facebook/react/pull/27278), [#​27309](https://github.com/facebook/react/pull/27309), [#​27302](https://github.com/facebook/react/pull/27302), [#​27307](https://github.com/facebook/react/pull/27307), [#​27366](https://github.com/facebook/react/pull/27366), [#​27370](https://github.com/facebook/react/pull/27370), [#​27321](https://github.com/facebook/react/pull/27321), [#​27374](https://github.com/facebook/react/pull/27374), [#​27372](https://github.com/facebook/react/pull/27372), [#​27397](https://github.com/facebook/react/pull/27397), [#​27399](https://github.com/facebook/react/pull/27399), [#​27460](https://github.com/facebook/react/pull/27460), [#​28557](https://github.com/facebook/react/pull/28557), [#​27570](https://github.com/facebook/react/pull/27570), [#​27571](https://github.com/facebook/react/pull/27571), [#​28631](https://github.com/facebook/react/pull/28631), [#​28788](https://github.com/facebook/react/pull/28788), [#​29694](https://github.com/facebook/react/pull/29694), [#​29695](https://github.com/facebook/react/pull/29695), [#​29694](https://github.com/facebook/react/pull/29694), [#​29665](https://github.com/facebook/react/pull/29665), [#​28232](https://github.com/facebook/react/pull/28232), [#​28319](https://github.com/facebook/react/pull/28319) by [@​acdlite](https://github.com/acdlite), [@​eps1lon](https://github.com/eps1lon), and [@​rickhanlonii](https://github.com/rickhanlonii)) - Add `use()` API to read resources in render ([#​25084](https://github.com/facebook/react/pull/25084), [#​25202](https://github.com/facebook/react/pull/25202), [#​25207](https://github.com/facebook/react/pull/25207), [#​25214](https://github.com/facebook/react/pull/25214), [#​25226](https://github.com/facebook/react/pull/25226), [#​25247](https://github.com/facebook/react/pull/25247), [#​25539](https://github.com/facebook/react/pull/25539), [#​25538](https://github.com/facebook/react/pull/25538), [#​25537](https://github.com/facebook/react/pull/25537), [#​25543](https://github.com/facebook/react/pull/25543), [#​25561](https://github.com/facebook/react/pull/25561), [#​25620](https://github.com/facebook/react/pull/25620), [#​25615](https://github.com/facebook/react/pull/25615), [#​25922](https://github.com/facebook/react/pull/25922), [#​25641](https://github.com/facebook/react/pull/25641), [#​25634](https://github.com/facebook/react/pull/25634), [#​26232](https://github.com/facebook/react/pull/26232), [#​26536](https://github.com/facebook/react/pull/26535), [#​26739](https://github.com/facebook/react/pull/26739), [#​28233](https://github.com/facebook/react/pull/28233) by [@​acdlite](https://github.com/acdlite), [@​MofeiZ](https://github.com/mofeiZ), [@​sebmarkbage](https://github.com/sebmarkbage), [@​sophiebits](https://github.com/sophiebits), [@​eps1lon](https://github.com/eps1lon), and [@​hansottowirtz](https://github.com/hansottowirtz)) - Add `useOptimistic()` hook to display mutated state optimistically during an async mutation ([#​26740](https://github.com/facebook/react/pull/26740), [#​26772](https://github.com/facebook/react/pull/26772), [#​27277](https://github.com/facebook/react/pull/27277), [#​27453](https://github.com/facebook/react/pull/27453), [#​27454](https://github.com/facebook/react/pull/27454), [#​27936](https://github.com/facebook/react/pull/27936) by [@​acdlite](https://github.com/acdlite)) - Added an `initialValue` argument to `useDeferredValue()` hook ([#​27500](https://github.com/facebook/react/pull/27500), [#​27509](https://github.com/facebook/react/pull/27509), [#​27512](https://github.com/facebook/react/pull/27512), [#​27888](https://github.com/facebook/react/pull/27888), [#​27550](https://github.com/facebook/react/pull/27550) by [@​acdlite](https://github.com/acdlite)) - Support refs as props, warn on `element.ref` access ([#​28348](https://github.com/facebook/react/pull/28348), [#​28464](https://github.com/facebook/react/pull/28464), [#​28731](https://github.com/facebook/react/pull/28731) by [@​acdlite](https://github.com/acdlite)) - Support Custom Elements ([#​22184](https://github.com/facebook/react/pull/22184), [#​26524](https://github.com/facebook/react/pull/26524), [#​26523](https://github.com/facebook/react/pull/26523), [#​27511](https://github.com/facebook/react/pull/27511), [#​24541](https://github.com/facebook/react/pull/24541) by [@​josepharhar](https://github.com/josepharhar), [@​sebmarkbage](https://github.com/sebmarkbage), [@​gnoff](https://github.com/gnoff) and [@​eps1lon](https://github.com/eps1lon)) - Add ref cleanup function ([#​25686](https://github.com/facebook/react/pull/25686), [#​28883](https://github.com/facebook/react/pull/28883), [#​28910](https://github.com/facebook/react/pull/28910) by [@​sammy-SC](https://github.com/sammy-SC), [@​jackpope](https://github.com/jackpope), and [@​kassens](https://github.com/kassens)) - Sibling pre-rendering replaced by sibling pre-warming ([#​26380](https://github.com/facebook/react/pull/26380), [#​26549](https://github.com/facebook/react/pull/26549), [#​30761](https://github.com/facebook/react/pull/30761), [#​30800](https://github.com/facebook/react/pull/30800), [#​30762](https://github.com/facebook/react/pull/30762), [#​30879](https://github.com/facebook/react/pull/30879), [#​30934](https://github.com/facebook/react/pull/30934), [#​30952](https://github.com/facebook/react/pull/30952), [#​31056](https://github.com/facebook/react/pull/31056), [#​31452](https://github.com/facebook/react/pull/31452) by [@​sammy-SC](https://github.com/sammy-SC), [@​acdlite](https://github.com/acdlite), [@​gnoff](https://github.com/gnoff), [@​jackpope](https://github.com/jackpope), [@​rickhanlonii](https://github.com/rickhanlonii)) - Don’t rethrow errors at the root ([#​28627](https://github.com/facebook/react/pull/28627), [#​28641](https://github.com/facebook/react/pull/28641) by [@​sebmarkbage](https://github.com/sebmarkbage)) - Batch sync discrete, continuous, and default lanes ([#​25700](https://github.com/facebook/react/pull/25700) by [@​tyao1](https://github.com/tyao1)) - Switch `<Context>` to mean `<Context.Provider>` ([#​28226](https://github.com/facebook/react/pull/28226) by [@​gaearon](https://github.com/gaearon)) - Changes to *StrictMode* - Handle `info`, `group`, and `groupCollapsed` in *StrictMode* logging ([#​25172](https://github.com/facebook/react/pull/25172) by [@​timneutkens](https://github.com/timneutkens)) - Refs are now attached/detached/attached in *StrictMode* ([#​25049](https://github.com/facebook/react/pull/25049) by [@​sammy-SC](https://github.com/sammy-SC)) - Fix `useSyncExternalStore()` hydration in *StrictMode* ([#​26791](https://github.com/facebook/react/pull/26791) by [@​sophiebits](https://github.com/sophiebits)) - Always trigger `componentWillUnmount()` in *StrictMode* ([#​26842](https://github.com/facebook/react/pull/26842) by [@​tyao1](https://github.com/tyao1)) - Restore double invoking `useState()` and `useReducer()` initializer functions in *StrictMode* ([#​28248](https://github.com/facebook/react/pull/28248) by [@​eps1lon](https://github.com/eps1lon)) - Reuse memoized result from first pass ([#​25583](https://github.com/facebook/react/pull/25583) by [@​acdlite](https://github.com/acdlite)) - Fix `useId()` in *StrictMode* ([#​25713](https://github.com/facebook/react/pull/25713) by [@​gnoff](https://github.com/gnoff)) - Add component name to *StrictMode* error messages ([#​25718](https://github.com/facebook/react/pull/25718) by [@​sammy-SC](https://github.com/sammy-SC)) - Add support for rendering BigInt ([#​24580](https://github.com/facebook/react/pull/24580) by [@​eps1lon](https://github.com/eps1lon)) - `act()` no longer checks `shouldYield` which can be inaccurate in test environments ([#​26317](https://github.com/facebook/react/pull/26317) by [@​acdlite](https://github.com/acdlite)) - Warn when keys are spread with props ([#​25697](https://github.com/facebook/react/pull/25697), [#​26080](https://github.com/facebook/react/pull/26080) by [@​sebmarkbage](https://github.com/sebmarkbage) and [@​kassens](https://github.com/kassens)) - Generate sourcemaps for production build artifacts ([#​26446](https://github.com/facebook/react/pull/26446) by [@​markerikson](https://github.com/markerikson)) - Improve stack diffing algorithm ([#​27132](https://github.com/facebook/react/pull/27132) by [@​KarimP](https://github.com/KarimP)) - Suspense throttling lowered from 500ms to 300ms ([#​26803](https://github.com/facebook/react/pull/26803) by [@​acdlite](https://github.com/acdlite)) - Lazily propagate context changes ([#​20890](https://github.com/facebook/react/pull/20890) by [@​acdlite](https://github.com/acdlite) and [@​gnoff](https://github.com/gnoff)) - Immediately rerender pinged fiber ([#​25074](https://github.com/facebook/react/pull/25074) by [@​acdlite](https://github.com/acdlite)) - Move update scheduling to microtask ([#​26512](https://github.com/facebook/react/pull/26512) by [@​acdlite](https://github.com/acdlite)) - Consistently apply throttled retries ([#​26611](https://github.com/facebook/react/pull/26611), [#​26802](https://github.com/facebook/react/pull/26802) by [@​acdlite](https://github.com/acdlite)) - Suspend Thenable/Lazy if it's used in React.Children ([#​28284](https://github.com/facebook/react/pull/28284) by [@​sebmarkbage](https://github.com/sebmarkbage)) - Detect infinite update loops caused by render phase updates ([#​26625](https://github.com/facebook/react/pull/26625) by [@​acdlite](https://github.com/acdlite)) - Update conditional hooks warning ([#​29626](https://github.com/facebook/react/pull/29626) by [@​sophiebits](https://github.com/sophiebits)) - Update error URLs to go to new docs ([#​27240](https://github.com/facebook/react/pull/27240) by [@​rickhanlonii](https://github.com/rickhanlonii)) - Rename the `react.element` symbol to `react.transitional.element` ([#​28813](https://github.com/facebook/react/pull/28813) by [@​sebmarkbage](https://github.com/sebmarkbage)) - Fix crash when suspending in shell during `useSyncExternalStore()` re-render ([#​27199](https://github.com/facebook/react/pull/27199) by [@​acdlite](https://github.com/acdlite)) - Fix incorrect “detected multiple renderers" error in tests ([#​22797](https://github.com/facebook/react/pull/22797) by [@​eps1lon](https://github.com/eps1lon)) - Fix bug where effect cleanup may be called twice after bailout ([#​26561](https://github.com/facebook/react/pull/26561) by [@​acdlite](https://github.com/acdlite)) - Fix suspending in shell during discrete update ([#​25495](https://github.com/facebook/react/pull/25495) by [@​acdlite](https://github.com/acdlite)) - Fix memory leak after repeated setState bailouts ([#​25309](https://github.com/facebook/react/pull/25309) by [@​acdlite](https://github.com/acdlite)) - Fix `useSyncExternalStore()` dropped update when state is dispatched in render phase ([#​25578](https://github.com/facebook/react/pull/25578) by [@​pandaiolo](https://github.com/pandaiolo)) - Fix logging when rendering a lazy fragment ([#​30372](https://github.com/facebook/react/pull/30372) by [@​tom-sherman](https://github.com/tom-sherman)) - Remove string refs ([#​25383](https://github.com/facebook/react/pull/25383), [#​28322](https://github.com/facebook/react/pull/28322) by [@​eps1lon](https://github.com/eps1lon) and [@​acdlite](https://github.com/acdlite)) - Remove Legacy Context ([#​30319](https://github.com/facebook/react/issues/30319) by [@​kassens](https://github.com/kassens)) - Remove `RefreshRuntime.findAffectedHostInstances` ([#​30538](https://github.com/facebook/react/pull/30538) by [@​gaearon](https://github.com/gaearon)) - Remove client caching from `cache()` API ([#​27977](https://github.com/facebook/react/pull/27977), [#​28250](https://github.com/facebook/react/pull/28250) by [@​acdlite](https://github.com/acdlite) and [@​gnoff](https://github.com/gnoff)) - Remove `propTypes` ([#​28324](https://github.com/facebook/react/pull/28324), [#​28326](https://github.com/facebook/react/pull/28326) by [@​gaearon](https://github.com/gaearon)) - Remove `defaultProps` support, except for classes ([#​28733](https://github.com/facebook/react/pull/28733) by [@​acdlite](https://github.com/acdlite)) - Remove UMD builds ([#​28735](https://github.com/facebook/react/pull/28735) by [@​gnoff](https://github.com/gnoff)) - Remove delay for non-transition updates ([#​26597](https://github.com/facebook/react/pull/26597) by [@​acdlite](https://github.com/acdlite)) - Remove `createFactory` ([#​27798](https://github.com/facebook/react/pull/27798) by [@​kassens](https://github.com/kassens)) ##### React DOM - Adds Form Actions to handle form submission ([#​26379](https://github.com/facebook/react/pull/26379), [#​26674](https://github.com/facebook/react/pull/26674), [#​26689](https://github.com/facebook/react/pull/26689), [#​26708](https://github.com/facebook/react/pull/26708), [#​26714](https://github.com/facebook/react/pull/26714), [#​26735](https://github.com/facebook/react/pull/26735), [#​26846](https://github.com/facebook/react/pull/26846), [#​27358](https://github.com/facebook/react/pull/27358), [#​28056](https://github.com/facebook/react/pull/28056) by [@​sebmarkbage](https://github.com/sebmarkbage), [@​acdlite](https://github.com/acdlite), and [@​jupapios](https://github.com/jupapios)) - Add `useFormStatus()` hook to provide status information of the last form submission ([#​26719](https://github.com/facebook/react/pull/26719), [#​26722](https://github.com/facebook/react/pull/26722), [#​26788](https://github.com/facebook/react/pull/26788), [#​29019](https://github.com/facebook/react/pull/29019), [#​28728](https://github.com/facebook/react/pull/28728), [#​28413](https://github.com/facebook/react/pull/28413) by [@​acdlite](https://github.com/acdlite) and [@​eps1lon](https://github.com/eps1lon)) - Support for Document Metadata. Adds `preinit`, `preinitModule`, `preconnect`, `prefetchDNS`, `preload`, and `preloadModule` APIs. - [#​25060](https://github.com/facebook/react/pull/25060), [#​25243](https://github.com/facebook/react/pull/25243), [#​25388](https://github.com/facebook/react/pull/25388), [#​25432](https://github.com/facebook/react/pull/25432), [#​25436](https://github.com/facebook/react/pull/25436), [#​25426](https://github.com/facebook/react/pull/25426), [#​25500](https://github.com/facebook/react/pull/25500), [#​25480](https://github.com/facebook/react/pull/25480), [#​25508](https://github.com/facebook/react/pull/25508), [#​25515](https://github.com/facebook/react/pull/25515), [#​25514](https://github.com/facebook/react/pull/25514), [#​25532](https://github.com/facebook/react/pull/25532), [#​25536](https://github.com/facebook/react/pull/25536), [#​25534](https://github.com/facebook/react/pull/25534), [#​25546](https://github.com/facebook/react/pull/25546), [#​25559](https://github.com/facebook/react/pull/25559), [#​25569](https://github.com/facebook/react/pull/25569), [#​25599](https://github.com/facebook/react/pull/25599), [#​25689](https://github.com/facebook/react/pull/25689), [#​26106](https://github.com/facebook/react/pull/26106), [#​26152](https://github.com/facebook/react/pull/26152), [#​26239](https://github.com/facebook/react/pull/26239), [#​26237](https://github.com/facebook/react/pull/26237), [#​26280](https://github.com/facebook/react/pull/26280), [#​26154](https://github.com/facebook/react/pull/26154), [#​26256](https://github.com/facebook/react/pull/26256), [#​26353](https://github.com/facebook/react/pull/26353), [#​26427](https://github.com/facebook/react/pull/26427), [#​26450](https://github.com/facebook/react/pull/26450), [#​26502](https://github.com/facebook/react/pull/26502), [#​26514](https://github.com/facebook/react/pull/26514), [#​26531](https://github.com/facebook/react/pull/26531), [#​26532](https://github.com/facebook/react/pull/26532), [#​26557](https://github.com/facebook/react/pull/26557), [#​26871](https://github.com/facebook/react/pull/26871), [#​26881](https://github.com/facebook/react/pull/26881), [#​26877](https://github.com/facebook/react/pull/26877), [#​26873](https://github.com/facebook/react/pull/26873), [#​26880](https://github.com/facebook/react/pull/26880), [#​26942](https://github.com/facebook/react/pull/26942), [#​26938](https://github.com/facebook/react/pull/26938), [#​26940](https://github.com/facebook/react/pull/26940), [#​26939](https://github.com/facebook/react/pull/26939), [#​27030](https://github.com/facebook/react/pull/27030), [#​27201](https://github.com/facebook/react/pull/27201), [#​27212](https://github.com/facebook/react/pull/27212), [#​27217](https://github.com/facebook/react/pull/27217), [#​27218](https://github.com/facebook/react/pull/27218), [#​27220](https://github.com/facebook/react/pull/27220), [#​27224](https://github.com/facebook/react/pull/27224), [#​27223](https://github.com/facebook/react/pull/27223), [#​27269](https://github.com/facebook/react/pull/27269), [#​27260](https://github.com/facebook/react/pull/27260), [#​27347](https://github.com/facebook/react/pull/27347), [#​27346](https://github.com/facebook/react/pull/27346), [#​27361](https://github.com/facebook/react/pull/27361), [#​27400](https://github.com/facebook/react/pull/27400), [#​27541](https://github.com/facebook/react/pull/27541), [#​27610](https://github.com/facebook/react/pull/27610), [#​28110](https://github.com/facebook/react/pull/28110), [#​29693](https://github.com/facebook/react/pull/29693), [#​29732](https://github.com/facebook/react/pull/29732), [#​29811](https://github.com/facebook/react/pull/29811), [#​27586](https://github.com/facebook/react/pull/27586), [#​28069](https://github.com/facebook/react/pull/28069) by [@​gnoff](https://github.com/gnoff), [@​sebmarkbage](https://github.com/sebmarkbage), [@​acdlite](https://github.com/acdlite), [@​kassens](https://github.com/kassens), [@​sokra](https://github.com/sokra), [@​sweetliquid](https://github.com/sweetliquid) - Add `fetchPriority` to `<img>` and `<link>` ([#​25927](https://github.com/facebook/react/pull/25927) by [@​styfle](https://github.com/styfle)) - Add support for SVG `transformOrigin` prop ([#​26130](https://github.com/facebook/react/pull/26130) by [@​arav-ind](https://github.com/arav-ind)) - Add support for `onScrollEnd` event ([#​26789](https://github.com/facebook/react/pull/26789) by [@​devongovett](https://github.com/devongovett)) - Allow `<hr>` as child of `<select>` ([#​27632](https://github.com/facebook/react/pull/27632) by [@​SouSingh](https://github.com/SouSingh)) - Add support for Popover API ([#​27981](https://github.com/facebook/react/pull/27981) by [@​eps1lon](https://github.com/eps1lon)) - Add support for `inert` ([#​24730](https://github.com/facebook/react/pull/24730) by [@​eps1lon](https://github.com/eps1lon)) - Add support for `imageSizes` and `imageSrcSet` ([#​22550](https://github.com/facebook/react/pull/22550) by [@​eps1lon](https://github.com/eps1lon)) - Synchronously flush transitions in popstate events ([#​26025](https://github.com/facebook/react/pull/26025), [#​27559](https://github.com/facebook/react/pull/27559), [#​27505](https://github.com/facebook/react/pull/27505), [#​30759](https://github.com/facebook/react/pull/30759) by [@​tyao1](https://github.com/tyao1) and [@​acdlite](https://github.com/acdlite)) - `flushSync` exhausts queue even if something throws ([#​26366](https://github.com/facebook/react/pull/26366) by [@​acdlite](https://github.com/acdlite)) - Throw error if `react` and `react-dom` versions don’t match ([#​29236](https://github.com/facebook/react/pull/29236) by [@​acdlite](https://github.com/acdlite)) - Ensure `srcset` and `src` are assigned last on `<img>` instances ([#​30340](https://github.com/facebook/react/pull/30340) by [@​gnoff](https://github.com/gnoff)) - Javascript URLs are replaced with functions that throw errors ([#​26507](https://github.com/facebook/react/pull/26507), [#​29808](https://github.com/facebook/react/pull/29808) by [@​sebmarkbage](https://github.com/sebmarkbage) and [@​kassens](https://github.com/kassens)) - Treat toggle and beforetoggle as discrete events ([#​29176](https://github.com/facebook/react/pull/29176) by [@​eps1lon](https://github.com/eps1lon)) - Filter out empty `src` and `href` attributes (unless for `<a href=”” />`) ([#​18513](https://github.com/facebook/react/pull/18513), [#​28124](https://github.com/facebook/react/pull/28124) by [@​bvaughn](https://github.com/bvaughn) and [@​eps1lon](https://github.com/eps1lon)) - Fix unitless `scale` style property ([#​25601](https://github.com/facebook/react/pull/25601) by [@​JonnyBurger](https://github.com/JonnyBurger)) - Fix `onChange` error message for controlled `<select>` ([#​27740](https://github.com/facebook/react/pull/27740) by [@​Biki-das](https://github.com/Biki-das)) - Fix focus restore in child windows after element reorder ([#​30951](https://github.com/facebook/react/pull/30951) by [@​ling1726](https://github.com/ling1726)) - Remove `render`, `hydrate`, `findDOMNode`, `unmountComponentAtNode`, `unstable_createEventHandle`, `unstable_renderSubtreeIntoContainer`, and `unstable_runWithPriority`. Move `createRoot` and `hydrateRoot` to `react-dom/client`. ([#​28271](https://github.com/facebook/react/pull/28271) by [@​gnoff](https://github.com/gnoff)) - Remove `test-utils` ([#​28541](https://github.com/facebook/react/pull/28541) by [@​eps1lon](https://github.com/eps1lon)) - Remove `unstable_flushControlled` ([#​26397](https://github.com/facebook/react/pull/26397) by [@​kassens](https://github.com/kassens)) - Remove legacy mode ([#​28468](https://github.com/facebook/react/pull/28468) by [@​gnoff](https://github.com/gnoff)) - Remove `renderToStaticNodeStream()` ([#​28873](https://github.com/facebook/react/pull/28873) by [@​gnoff](https://github.com/gnoff)) - Remove `unstable_renderSubtreeIntoContainer` ([#​29771](https://github.com/facebook/react/pull/29771) by [@​kassens](https://github.com/kassens)) ##### React DOM Server - Stable release of React Server Components ([Many, many PRs](https://github.com/facebook/react/pulls?q=is%3Apr+is%3Aclosed+%5BFlight%5D+in%3Atitle+created%3A%3C2024-12-01+) by [@​sebmarkbage](https://github.com/sebmarkbage), [@​acdlite](https://github.com/acdlite), [@​gnoff](https://github.com/gnoff), [@​sammy-SC](https://github.com/sammy-SC), [@​gaearon](https://github.com/gaearon), [@​sophiebits](https://github.com/sophiebits), [@​unstubbable](https://github.com/unstubbable), [@​lubieowoce](https://github.com/lubieowoce)) - Support Server Actions ([#​26124](https://github.com/facebook/react/pull/26124), [#​26632](https://github.com/facebook/react/pull/26632), [#​27459](https://github.com/facebook/react/pull/27459) by [@​sebmarkbage](https://github.com/sebmarkbage) and [@​acdlite](https://github.com/acdlite)) - Changes to SSR - Add external runtime which bootstraps hydration on the client for binary transparency ([#​25437](https://github.com/facebook/react/pull/25437), [#​26169](https://github.com/facebook/react/pull/26169), [#​25499](https://github.com/facebook/react/pull/25499) by [@​MofeiZ](https://github.com/mofeiZ) and [@​acdlite](https://github.com/acdlite)) - Support subresource integrity for `bootstrapScripts` and `bootstrapModules` ([#​25104](https://github.com/facebook/react/pull/25104) by [@​gnoff](https://github.com/gnoff)) - Fix null bytes written at text chunk boundaries ([#​26228](https://github.com/facebook/react/pull/26228) by [@​sophiebits](https://github.com/sophiebits)) - Fix logic around attribute serialization ([#​26526](https://github.com/facebook/react/pull/26526) by [@​gnoff](https://github.com/gnoff)) - Fix precomputed chunk cleared on Node 18 ([#​25645](https://github.com/facebook/react/pull/25645) by [@​feedthejim](https://github.com/feedthejim)) - Optimize end tag chunks ([#​27522](https://github.com/facebook/react/pull/27522) by [@​yujunjung](https://github.com/yujunjung)) - Gracefully handle suspending in DOM configs ([#​26768](https://github.com/facebook/react/pull/26768) by [@​sebmarkbage](https://github.com/sebmarkbage)) - Check for nullish values on ReactCustomFormAction ([#​26770](https://github.com/facebook/react/pull/26770) by [@​sebmarkbage](https://github.com/sebmarkbage)) - Preload `bootstrapModules`, `bootstrapScripts`, and update priority queue ([#​26754](https://github.com/facebook/react/pull/26754), [#​26753](https://github.com/facebook/react/pull/26753), [#​27190](https://github.com/facebook/react/pull/27190), [#​27189](https://github.com/facebook/react/pull/27189) by [@​gnoff](https://github.com/gnoff)) - Client render the nearest child or parent suspense boundary if replay errors or is aborted ([#​27386](https://github.com/facebook/react/pull/27386) by [@​sebmarkbage](https://github.com/sebmarkbage)) - Don't bail out of flushing if we still have pending root tasks ([#​27385](https://github.com/facebook/react/pull/27385) by [@​sebmarkbage](https://github.com/sebmarkbage)) - Ensure Resumable State is Serializable ([#​27388](https://github.com/facebook/react/pull/27388) by [@​sebmarkbage](https://github.com/sebmarkbage)) - Remove extra render pass when reverting to client render ([#​26445](https://github.com/facebook/react/pull/26445) by [@​acdlite](https://github.com/acdlite)) - Fix unwinding context during selective hydration ([#​25876](https://github.com/facebook/react/pull/25876) by [@​tyao1](https://github.com/tyao1)) - Stop flowing and then abort if a stream is cancelled ([#​27405](https://github.com/facebook/react/pull/27405) by [@​sebmarkbage](https://github.com/sebmarkbage)) - Pass cancellation reason to abort ([#​27536](https://github.com/facebook/react/pull/27536) by [@​sebmarkbage](https://github.com/sebmarkbage)) - Add `onHeaders` entrypoint option ([#​27641](https://github.com/facebook/react/pull/27641), [#​27712](https://github.com/facebook/react/pull/27712) by [@​gnoff](https://github.com/gnoff)) - Escape `<style>` and `<script>` textContent to enable rendering inner content without dangerouslySetInnerHTML ([#​28870](https://github.com/facebook/react/pull/28870), [#​28871](https://github.com/facebook/react/pull/28871) by [@​gnoff](https://github.com/gnoff)) - Fallback to client replaying actions for Blob serialization ([#​28987](https://github.com/facebook/react/pull/28987) by [@​sebmarkbage](https://github.com/sebmarkbage)) - Render Suspense fallback if boundary contains new stylesheet during sync update ([#​28965](https://github.com/facebook/react/pull/28965) by [@​gnoff](https://github.com/gnoff)) - Fix header length tracking ([#​30327](https://github.com/facebook/react/issues/30327) by [@​gnoff](https://github.com/gnoff)) - Use `srcset` to trigger load event on mount ([#​30351](https://github.com/facebook/react/issues/30351) by [@​gnoff](https://github.com/gnoff)) - Don't perform work when closing stream ([#​30497](https://github.com/facebook/react/issues/30497) by [@​gnoff](https://github.com/gnoff)) - Allow aborting during render ([#​30488](https://github.com/facebook/react/issues/30488), [#​30730](https://github.com/facebook/react/pull/30730) by [@​gnoff](https://github.com/gnoff)) - Start initial work immediately ([#​31079](https://github.com/facebook/react/issues/31079) by [@​gnoff](https://github.com/gnoff)) - A transition flowing into a dehydrated boundary no longer suspends when showing fallback ([#​27230](https://github.com/facebook/react/pull/27230) by [@​acdlite](https://github.com/acdlite)) - Fix selective hydration triggers false update loop error ([#​27439](https://github.com/facebook/react/pull/27439) by [@​acdlite](https://github.com/acdlite)) - Warn for Child Iterator of all types but allow Generator Components ([#​28853](https://github.com/facebook/react/pull/28853) by [@​sebmarkbage](https://github.com/sebmarkbage)) - Include regular stack trace in serialized errors ([#​28684](https://github.com/facebook/react/pull/28684), [#​28738](https://github.com/facebook/react/pull/28738) by [@​sebmarkbage](https://github.com/sebmarkbage)) - Aborting early no longer infinitely suspends ([#​24751](https://github.com/facebook/react/pull/24751) by [@​sebmarkbage](https://github.com/sebmarkbage)) - Fix hydration warning suppression in text comparisons ([#​24784](https://github.com/facebook/react/pull/24784) by [@​gnoff](https://github.com/gnoff)) - Changes to error handling in SSR - Add diffs to hydration warnings ([#​28502](https://github.com/facebook/react/pull/28502), [#​28512](https://github.com/facebook/react/pull/28512) by [@​sebmarkbage](https://github.com/sebmarkbage)) - Make Error creation lazy ([#​24728](https://github.com/facebook/react/pull/24728) by [@​sebmarkbage](https://github.com/sebmarkbage)) - Remove recoverable error when a sync update flows into a dehydrated boundary ([#​25692](https://github.com/facebook/react/pull/25692) by [@​sebmarkbage](https://github.com/sebmarkbage)) - Don't "fix up" mismatched text content with suppressedHydrationWarning ([#​26391](https://github.com/facebook/react/pull/26391) by [@​sebmarkbage](https://github.com/sebmarkbage)) - Fix component stacks in errors ([#​27456](https://github.com/facebook/react/pull/27456) by [@​sebmarkbage](https://github.com/sebmarkbage)) - Add component stacks to `onError` ([#​27761](https://github.com/facebook/react/pull/27761), [#​27850](https://github.com/facebook/react/pull/27850) by [@​gnoff](https://github.com/gnoff) and [@​sebmarkbage](https://github.com/sebmarkbage)) - Throw hydration mismatch errors once ([#​28502](https://github.com/facebook/react/pull/28502) by [@​sebmarkbage](https://github.com/sebmarkbage)) - Add Bun streaming server renderer ([#​25597](https://github.com/facebook/react/pull/25597) by [@​colinhacks](https://github.com/colinhacks)) - Add nonce support to bootstrap scripts ([#​26738](https://github.com/facebook/react/pull/26738) by [@​danieltott](https://github.com/danieltott)) - Add `crossorigin` support to bootstrap scripts ([#​26844](https://github.com/facebook/react/pull/26844) by [@​HenriqueLimas](https://github.com/HenriqueLimas)) - Support `nonce` and `fetchpriority` in preload links ([#​26826](https://github.com/facebook/react/pull/26826) by [@​liuyenwei](https://github.com/liuyenwei)) - Add `referrerPolicy` to `ReactDOM.preload()` ([#​27096](https://github.com/facebook/react/pull/27096) by [@​styfle](https://github.com/styfle)) - Add server condition for `react/jsx-dev-runtime` ([#​28921](https://github.com/facebook/react/pull/28921) by [@​himself65](https://github.com/himself65)) - Export version ([#​29596](https://github.com/facebook/react/pull/29596) by [@​unstubbable](https://github.com/unstubbable)) - Rename the secret export of Client and Server internals ([#​28786](https://github.com/facebook/react/pull/28786), [#​28789](https://github.com/facebook/react/pull/28789) by [@​sebmarkbage](https://github.com/sebmarkbage)) - Remove layout effect warning on server ([#​26395](https://github.com/facebook/react/pull/26395) by [@​rickhanlonii](https://github.com/rickhanlonii)) - Remove `errorInfo.digest` from `onRecoverableError` ([#​28222](https://github.com/facebook/react/pull/28222) by [@​gnoff](https://github.com/gnoff)) ##### ReactTestRenderer - Add deprecation error to `react-test-renderer` on web ([#​27903](https://github.com/facebook/react/pull/27903), [#​28904](https://github.com/facebook/react/pull/28904) by [@​jackpope](https://github.com/jackpope) and [@​acdlite](https://github.com/acdlite)) - Render with ConcurrentRoot on web ([#​28498](https://github.com/facebook/react/pull/28498) by [@​jackpope](https://github.com/jackpope)) - Remove `react-test-renderer/shallow` export ([#​25475](https://github.com/facebook/react/pull/25475), [#​28497](https://github.com/facebook/react/pull/28497) by [@​sebmarkbage](https://github.com/sebmarkbage) and [@​jackpope](https://github.com/jackpope)) ##### React Reconciler - Enable suspending commits without blocking render ([#​26398](https://github.com/facebook/react/pull/26398), [#​26427](https://github.com/facebook/react/pull/26427) by [@​acdlite](https://github.com/acdlite)) - Remove `prepareUpdate` ([#​26583](https://github.com/facebook/react/pull/26583), [#​27409](http://github.com/facebook/react/pull/27409) by [@​sebmarkbage](https://github.com/sebmarkbage) and [@​sophiebits](https://github.com/sophiebits)) ##### React-Is - Enable tree shaking ([#​27701](https://github.com/facebook/react/pull/27701) by [@​markerikson](https://github.com/markerikson)) - Remove `isConcurrentMode` and `isAsyncMode` methods ([#​28224](https://github.com/facebook/react/pull/28224) by [@​gaearon](https://github.com/gaearon)) ##### useSyncExternalStore - Remove React internals access ([#​29868](https://github.com/facebook/react/pull/29868) by [@​phryneas](https://github.com/phryneas)) - Fix stale selectors keeping previous store references ([#​25969](https://github.com/facebook/react/pull/25968) by [@​jellevoost](https://github.com/jellevoost)) </details> --- ### Configuration 📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about these updates again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate). <!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzOS45OS4wIiwidXBkYXRlZEluVmVyIjoiMzkuMTEzLjAiLCJ0YXJnZXRCcmFuY2giOiJtYWluIiwibGFiZWxzIjpbImRlcGVuZGVuY2llcyJdfQ==--> Reviewed-on: https://git.tristess.app/alexandresoro/ouca-web/pulls/6 Reviewed-by: Alexandre Soro <[email protected]> Co-authored-by: renovate <[email protected]> Co-committed-by: renovate <[email protected]>
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Previously,
<Context>was equivalent to<Context.Consumer>. However, since the introduction of Hooks, the<Context.Consumer>API is rarely used. The goal here is to make the common case cleaner:This is technically a breaking change, but we've been warning about rendering
<Context>directly for several years by now, so it's unlikely much code in the wild depends on the old behavior. Proof that it warns today (check console).The relevant commit is 5696782. It switches
createContextimplementation so thatContext.Provider === Context.The main assumption that changed is that a Provider's fiber type is now the context itself (rather than an intermediate object). Whereas a Consumer's fiber type is now always an intermediate object (rather than it being sometimes the context itself and sometimes an intermediate object).
My methodology was to start with the relevant symbols, work tags, and types, and work my way backwards to all usages.
This might break tooling that depends on inspecting React's internal fields. I've added DevTools support in the second commit. This didn't need explicit versioning—the structure tells us enough.