fix(deps): update react monorepo to v19 (major) #20
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This PR contains the following updates:
^16.9.53
->^19.0.0
^16.0.9
->^19.0.0
^16.7.0-alpha.2
->^19.0.0
16.7.0-alpha.2
->19.0.0
^16.7.0-alpha.2
->^19.0.0
16.7.0-alpha.2
->19.0.0
Release Notes
facebook/react (react)
v19.0.0
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v18.3.1
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v18.3.0
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v18.2.0
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React DOM
onRecoverableError
. (@gnoff in #24591)document
causing a blank page on mismatch. (@gnoff in #24523)setState
in Safari when adding an iframe. (@gaearon in #24459)React DOM Server
<title>
elements to match the browser constraints. (@gnoff in #24679)highWaterMark
to0
. (@jplhomer in #24641)Server Components (Experimental)
useId()
inside Server Components. (@gnoff in #24172)v18.1.0
Compare Source
React DOM
react-dom/client
when using UMD bundle. (@alireza-molaee in #24274)suppressHydrationWarning
to work in production too. (@gaearon in #24271)componentWillUnmount
firing twice inside of Suspense. (@acdlite in #24308)useDeferredValue
causing an infinite loop when passed an unmemoized value. (@acdlite in #24247)setState
loop inuseEffect
. (@gaearon in #24298)setState
inuseInsertionEffect
. (@gaearon in #24295)React DOM Server
bootstrapScriptContent
contents. (@gnoff in #24385)renderToPipeableStream
. (@gnoff in #24291)ESLint Plugin: React Hooks
Use Subscription
use-sync-external-store
shim. (@gaearon in #24289)v18.0.0
Compare Source
Below is a list of all new features, APIs, deprecations, and breaking changes.
Read React 18 release post and React 18 upgrade guide for more information.
New Features
React
useId
is a new hook for generating unique IDs on both the client and server, while avoiding hydration mismatches. It is primarily useful for component libraries integrating with accessibility APIs that require unique IDs. This solves an issue that already exists in React 17 and below, but it’s even more important in React 18 because of how the new streaming server renderer delivers HTML out-of-order.startTransition
anduseTransition
let you mark some state updates as not urgent. Other state updates are considered urgent by default. React will allow urgent state updates (for example, updating a text input) to interrupt non-urgent state updates (for example, rendering a list of search results).useDeferredValue
lets you defer re-rendering a non-urgent part of the tree. It is similar to debouncing, but has a few advantages compared to it. There is no fixed time delay, so React will attempt the deferred render right after the first render is reflected on the screen. The deferred render is interruptible and doesn't block user input.useSyncExternalStore
is a new hook that allows external stores to support concurrent reads by forcing updates to the store to be synchronous. It removes the need foruseEffect
when implementing subscriptions to external data sources, and is recommended for any library that integrates with state external to React.useInsertionEffect
is a new hook that allows CSS-in-JS libraries to address performance issues of injecting styles in render. Unless you’ve already built a CSS-in-JS library we don’t expect you to ever use this. This hook will run after the DOM is mutated, but before layout effects read the new layout. This solves an issue that already exists in React 17 and below, but is even more important in React 18 because React yields to the browser during concurrent rendering, giving it a chance to recalculate layout.React DOM Client
These new APIs are now exported from
react-dom/client
:createRoot
: New method to create a root torender
orunmount
. Use it instead ofReactDOM.render
. New features in React 18 don't work without it.hydrateRoot
: New method to hydrate a server rendered application. Use it instead ofReactDOM.hydrate
in conjunction with the new React DOM Server APIs. New features in React 18 don't work without it.Both
createRoot
andhydrateRoot
accept a new option calledonRecoverableError
in case you want to be notified when React recovers from errors during rendering or hydration for logging. By default, React will usereportError
, orconsole.error
in the older browsers.React DOM Server
These new APIs are now exported from
react-dom/server
and have full support for streaming Suspense on the server:renderToPipeableStream
: for streaming in Node environments.renderToReadableStream
: for modern edge runtime environments, such as Deno and Cloudflare workers.The existing
renderToString
method keeps working but is discouraged.v17.0.2
Compare Source
React DOM
SharedArrayBuffer
cross-origin isolation warning. (@koba04 and @bvaughn in #20831, #20832, and #20840)v17.0.1
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React DOM
v17.0.0
Compare Source
Today, we are releasing React 17!
Learn more about React 17 and how to update to it on the official React blog.
React
react/jsx-runtime
andreact/jsx-dev-runtime
for the new JSX transform. (@lunaruan in #18299)displayName
on context for improved stacks. (@eps1lon in #18224)'use strict'
from leaking in the UMD bundles. (@koba04 in #19614)fb.me
for redirects. (@cylim in #19598)React DOM
document
. (@trueadm in #18195 and others)useEffect
cleanup functions asynchronously. (@bvaughn in #17925)focusin
andfocusout
foronFocus
andonBlur
. (@trueadm in #19186)Capture
events use the browser capture phase. (@trueadm in #19221)onScroll
event. (@gaearon in #19464)forwardRef
ormemo
component returnsundefined
. (@gaearon in #19550)console
in the second render pass of DEV mode double render. (@sebmarkbage in #18547)ReactTestUtils.SimulateNative
API. (@gaearon in #13407)ReactDOM.flushSync
during lifecycle methods (but warn). (@sebmarkbage in #18759)code
property to the keyboard event objects. (@bl00mber in #18287)disableRemotePlayback
property forvideo
elements. (@tombrowndev in #18619)enterKeyHint
property forinput
elements. (@eps1lon in #18634)value
is provided to<Context.Provider>
. (@charlie1404 in #19054)memo
orforwardRef
components returnundefined
. (@bvaughn in #19550)onTouchStart
,onTouchMove
, andonWheel
passive. (@gaearon in #19654)setState
hanging in development inside a closed iframe. (@gaearon in #19220)defaultProps
. (@jddxf in #18539)dangerouslySetInnerHTML
isundefined
. (@eps1lon in #18676)require
implementation. (@just-boris in #18632)onBeforeInput
reporting an incorrectevent.type
. (@eps1lon in #19561)event.relatedTarget
reported asundefined
in Firefox. (@claytercek in #19607)movementX/Y
polyfill with capture events. (@gaearon in #19672)onSubmit
andonReset
events. (@gaearon in #19333)React DOM Server
useCallback
behavior consistent withuseMemo
for the server renderer. (@alexmckenley in #18783)React Test Renderer
findByType
error message. (@henryqdineen in #17439)Concurrent Mode (Experimental)
unstable_
prefix before the experimental APIs. (@acdlite in #18825)unstable_discreteUpdates
andunstable_flushDiscreteUpdates
. (@trueadm in #18825)timeoutMs
argument. (@acdlite in #19703)<div hidden />
prerendering in favor of a different future API. (@acdlite in #18917)unstable_expectedLoadTime
to Suspense for CPU-bound trees. (@acdlite in #19936)unstable_useOpaqueIdentifier
Hook. (@lunaruan in #17322)unstable_startTransition
API. (@rickhanlonii in #19696)act
in the test renderer no longer flushes Suspense fallbacks. (@acdlite in #18596)useMutableSource
that may happen whengetSnapshot
changes. (@bvaughn in #18297)useMutableSource
. (@bvaughn in #18912)v16.14.0
Compare Source
React
facebook/react (react)
v19.0.0
Compare Source
Below is a list of all new features, APIs, deprecations, and breaking changes. Read React 19 release post and React 19 upgrade guide for more information.
New Features
React
startTransition
can now accept async functions. Functions passed tostartTransition
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 likefetch()
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 formaction
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 forforwardRef
.React DOM Client
<form> action
prop: Form Actions allow you to manage forms automatically and integrate withuseFormStatus
. When a<form> action
succeeds, React will automatically reset the form for uncontrolled components. The form can be reset manually with the newrequestFormReset
API.<button> and <input> formAction
prop: Actions can be passed to theformAction
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
, andaction
.<head>
section of the document.<head>
on the client before revealing the content of a Suspense boundary that depends on that stylesheet.preinit
,preload
,prefetchDNS
, andpreconnect
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
prerender
andprerenderToNodeStream
APIs for static site generation. They are designed to work with streaming environments like Node.js Streams and Web Streams. UnlikerenderToString
, they wait for data to load for HTML generation.React Server Components
Deprecations
element.ref
access: React 19 supports ref as a prop, so we’re deprecatingelement.ref
in favor ofelement.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 or @testing-library/react-nativeBreaking 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 for more details and guidance on codemodding.React
onUncaughtError
andonCaughtError
methods tocreateRoot
andhydrateRoot
to customize this error handling.propTypes
: UsingpropTypes
will now be silently ignored. If required, we recommend migrating to TypeScript or another type-checking solution.defaultProps
for functions: ES6 default parameters can be used in place. Class components continue to supportdefaultProps
since there is no ES6 alternative.contextTypes
andgetChildContext
: Legacy Context for class components has been removed in favor of thecontextType
API.React.createFactory
: Now that JSX is broadly supported, allcreateFactory
usage can be migrated to JSX components.react-test-renderer/shallow
: This has been a re-export of react-shallow-renderer since React 18. If needed, you can continue to use the third-party package directly. We recommend using @testing-library/react or @testing-library/react-native instead.React DOM
react-dom/test-utils
: We’ve movedact
fromreact-dom/test-utils
to react. All other utilities have been removed.ReactDOM
.render
,ReactDOM
.hydrate
: These have been removed in favor of the concurrent equivalents:ReactDOM
.createRoot
andReactDOM.hydrateRoot
.unmountComponentAtNode
: Removed in favor ofroot.unmount()
.ReactDOM
.findDOMNode
: You can replaceReactDOM
.findDOMNode
with DOM Refs.Notable Changes
React
<Context>
as a provider: You can now render<Context>
as a provider instead of<Context.Provider>
.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 thedeferredValue
returned.useMemo
anduseCallback
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.React DOM
TypeScript Changes
The most common changes can be codemodded with
npx types-react-codemod@latest preset-19 ./path-to-your-react-ts-files
.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
)prop-types
:Requireable
,ValidationMap
,Validator
,WeakValidationMap
create-react-class
:ClassicComponentClass
,ClassicComponent
,ClassicElement
,ComponentSpec
,Mixin
,ReactChildren
,ReactHTML
,ReactSVG
,SFCFactory
useRef
: The initial argument is now required to matchuseState
,createContext
etcuseRef()
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.ReactElement
typing: The props of React elements now default tounknown
instead ofany
if the element is typed asReactElement
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'
useReducer
typings: MostuseReducer
usage should not require explicit type arguments.For example,
All Changes
React
useActionState()
hook to update state based on the result of a Form Action (#27270, #27278, #27309, #27302, #27307, #27366, #27370, #27321, #27374, #27372, #27397, #27399, #27460, #28557, #27570, #27571, #28631, #28788, #29694, #29695, #29694, #29665, #28232, #28319 by @acdlite, @eps1lon, and @rickhanlonii)use()
API to read resources in render (#25084, #25202, #25207, #25214, #25226, #25247, #25539, #25538, #25537, #25543, #25561, #25620, #25615, #25922, #25641, #25634, #26232, #26536, #26739, #28233 by @acdlite, @MofeiZ, @sebmarkbage, @sophiebits, @eps1lon, and @hansottowirtz)useOptimistic()
hook to display mutated state optimistically during an async mutation (#26740, #26772, #27277, #27453, #27454, #27936 by @acdlite)initialValue
argument touseDeferredValue()
hook (#27500, #27509, #27512, #27888, #27550 by @acdlite)element.ref
access (#28348, #28464, #28731 by @acdlite)<Context>
to mean<Context.Provider>
(#28226 by @gaearon)info
,group
, andgroupCollapsed
in StrictMode logging (#25172 by @timneutkens)useSyncExternalStore()
hydration in StrictMode (#26791 by @sophiebits)componentWillUnmount()
in StrictMode (#26842 by @tyao1)useState()
anduseReducer()
initializer functions in StrictMode (#28248 by @eps1lon)useId()
in StrictMode (#25713 by @gnoff)act()
no longer checksshouldYield
which can be inaccurate in test environments (#26317 by @acdlite)react.element
symbol toreact.transitional.element
(#28813 by @sebmarkbage)useSyncExternalStore()
re-render (#27199 by @acdlite)useSyncExternalStore()
dropped update when state is dispatched in render phase (#25578 by @pandaiolo)RefreshRuntime.findAffectedHostInstances
(#30538 by @gaearon)cache()
API (#27977, #28250 by @acdlite and @gnoff)propTypes
([#28324](https://redirConfiguration
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