build(deps): bump the production-dependencies group across 1 directory with 8 updates

[dependabot]

Bumps the production-dependencies group with 8 updates in the /react-nextjs directory:

Package	From	To
@types/node	22.7.4	22.13.7
next	14.2.21	15.2.0
react	18.3.1	19.0.0
@types/react	18.3.10	19.0.10
react-bootstrap	2.10.5	2.10.9
react-dom	18.3.1	19.0.0
@types/react-dom	18.3.0	19.0.4
typescript	5.6.2	5.8.2

Updates @types/node from 22.7.4 to 22.13.7

Commits

• See full diff in compare view

Updates next from 14.2.21 to 15.2.0

Release notes

Sourced from next's releases.

v15.2.0

Core Changes

• Fix unstable_allowDynamic when used with pnpm: #73732
• [dynamicIO] use new heuristic to track whether server render is dynamic: #73751
• Fix receiveExpiredTags not always called: #73759
• error-overlay: Rename "Error" to "Issue": #72817
• remove redundant segment collection call: #73773
• Metadata resolvers can be fetched synchronously: #73771
• Turbopack: migrate client references to single-graph-traversal: #73322
• next-codemod: update gitignore file for parity for yarn recommendations: #71963
• feat: error code: #73332
• Detach next-error-code-swc-plugin from workspace: #73806
• [CI] Prominent error message for check_error_codes: #73807
• [Segment Cache] Add PPR header to segment prefetch: #73756
• fix: path escaping issue on windows: #73843
• Rename variables in LayoutRouter for clarity: #73826
• [Segment Cache] Skip prefetched segments on server: #73626
• [Segment Cache] No data on tree prefetch if no PPR: #73767
• Remove segmentPath from RSC payload: #73827
• build: better error if fetching AMP validator fails: #73851
• Escape the '.' in '.json' when making static data routes.: #73850
• fix(next@15): use the asset prefix when loading a CSS in App Router: #72095
• Exclude .test. files from using error code plugin: #73868
• Refactor telemetry API: #73865
• Add additional error classes and error codes: #73862
• refactor: collectAppPageSegments: #73908
• cleanup unnecessary map in dev server: #73745
• Retry manifest file loading only in dev mode: #73900
• Turbopack: ignore empty NEXT_TURBOPACK_TRACING var: #73903
• Ignore RSC fetch errors after hard navigation: #73975
• Fix error code check in windows: #73981
• Separate viewport and metadata in rsc and cache: #73867
• Add feature flag for new dev overlay: #73977
• Restore RSC fetch error handling after navigating back: #73985
• refactor: make locales array immutable: #74037
• fix: skip rendering dynamic root segment routes: #74039
• refactor: cache lowercasing all the locales: #74038
• Add SRI support for Node.js Runtime : #73891
• Separate bots detection utils: #74000
• docs: remove a duplicated word in redirect code comment: #74043
• examples: update gitignore files for parity for yarn recommendations: #71956
• chore: update turbopack document path in the warning message: #72597
• Clean up react-dev-overlay before fork: #74016
• chore(next/image): improve imgopt api bypass detection for unsupported images: #73909
• [Segment Cache] Add CacheStatus.Empty: #73667
• chore: move static paths utils into own folder: #73928
• Delete unused GroupedStackFrames.tsx: #74028
• [Segment Cache] Move cache key creation to client : #73853
• feat: added partial shell generation using root params: #73816

... (truncated)

Commits

• b0416fb v15.2.0
• 166369d v15.2.0-canary.77
• 2c57888 [dev-overlay]: allow disabled state to be dismissable (#76572)
• c919f09 examples: fix supabase example for v15 (#76567)
• 991c32a [dev-overlay] rephrase docs button title as link to related docs (#76571)
• aaebca9 Updated remove-console example to utilize the app router. (#76543)
• 8dd0b56 docs(errors): update suppressHydrationWarning section (#76521)
• c505a4c exclude AppDevOverlayErrorBoundary from prod build (#76568)
• 91684ee Remove rewrite query params from request URL when deployed to Vercel (#76548)
• dbeeb02 [dev-overlay] change button to lowercase except leading letter (#76565)
• Additional commits viewable in compare view

Updates react from 18.3.1 to 19.0.0

Release notes

Sourced from react's releases.

19.0.0 (December 5, 2024)

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.

Note: To help make the upgrade to React 19 easier, we’ve published a react@18.3 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 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 @​testinglibrary.com/docs/react-testing-library/intro/) or @​testingesting-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 for more details and guidance on codemodding.

React

• New JSX Transform is now required: We introduced a new JSX transform 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.

... (truncated)

Changelog

Sourced from react's changelog.

19.0.0 (December 5, 2024)

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.

Note: To help make the upgrade to React 19 easier, we’ve published a react@18.3 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 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 or @​testing-library/react-native

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 for more details and guidance on codemodding.

React

• New JSX Transform is now required: We introduced a new JSX transform 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.

... (truncated)

Commits

• e137890 [string-refs] cleanup string ref code (#31443)
• d1f0472 [string-refs] remove enableLogStringRefsProd flag (#31414)
• 3dc1e48 Followup: remove dead test code from #30346 (#31415)
• 07aa494 Remove enableRefAsProp feature flag (#30346)
• 45804af [flow] Eliminate usage of more than 1-arg React.AbstractComponent in React ...
• 5636fad [string-refs] log string ref from prod (#31161)
• b78a7f2 [rcr] Re-export useMemoCache in top level React namespace (#31139)
• 4e9540e [Fiber] Log the Render/Commit phases and the gaps in between (#31016)
• d4688df [Fiber] Track Event Time, startTransition Time and setState Time (#31008)
• 15da917 Don't read currentTransition back from internals (#30991)
• Additional commits viewable in compare view

Updates @types/react from 18.3.10 to 19.0.10

Commits

• See full diff in compare view

Updates react-bootstrap from 2.10.5 to 2.10.9

Release notes

Sourced from react-bootstrap's releases.

v2.10.9

2.10.9 (2025-01-30)

Bug Fixes

• update @​restart/ui to v1.9.4 (#6893) (bbbba51)
• Variant/Color type infer (#6885) (0e3ab61)

v2.10.8

2.10.8 (2025-01-21)

Bug Fixes

• Navbar: fix react 19 type compatibility (#6886) (7f69899)
• update @​restart/ui to v1.9.3 (#6890) (1277678)

v2.10.7

2.10.7 (2024-12-15)

Bug Fixes

• fix type conflicts with react 19 types (#6880) (416145f)

v2.10.6

2.10.6 (2024-11-25)

Bug Fixes

• AccordionHeader: apply aria-controls to button (#6868) (8475119)
• fix ref access in React 19 (#6869) (2c65f5d)
• Nav: remove prop-types-extra import from build (#6854) (ab81d6b)

Changelog

Sourced from react-bootstrap's changelog.

2.10.9 (2025-01-30)

Bug Fixes

• update @​restart/ui to v1.9.4 (#6893) (bbbba51)
• Variant/Color type infer (#6885) (0e3ab61)

2.10.8 (2025-01-21)

Bug Fixes

• Navbar: fix react 19 type compatibility (#6886) (7f69899)
• update @​restart/ui to v1.9.3 (#6890) (1277678)

2.10.7 (2024-12-15)

Bug Fixes

• fix type conflicts with react 19 types (#6880) (416145f)

2.10.6 (2024-11-25)

Bug Fixes

• AccordionHeader: apply aria-controls to button (#6868) (8475119)
• fix ref access in React 19 (#6869) (2c65f5d)
• Nav: remove prop-types-extra import from build (#6854) (ab81d6b)

Commits

• 7cb1fc0 Publish v2.10.9
• bbbba51 fix: update @​restart/ui to v1.9.4 (#6893)
• 0e3ab61 fix: Variant/Color type infer (#6885)
• fad2751 Publish v2.10.8
• 1277678 fix: update @​restart/ui to v1.9.3 (#6890)
• 0f1a5b6 docs: update react-docgen to v7 (#6888)
• 7f69899 fix(Navbar): fix react 19 type compatibility (#6886)
• 58e632c docs: update docusaurus to v3.6.3 (#6867)
• 2ba9405 Publish v2.10.7
• 416145f fix: fix type conflicts with react 19 types (#6880)
• Additional commits viewable in compare view

Updates react-dom from 18.3.1 to 19.0.0

Release notes

Sourced from react-dom's releases.

19.0.0 (December 5, 2024)

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.

Note: To help make the upgrade to React 19 easier, we’ve published a react@18.3 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 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 @​testinglibrary.com/docs/react-testing-library/intro/) or @​testingesting-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 for more details and guidance on codemodding.

React

• New JSX Transform is now required: We introduced a new JSX transform 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.

... (truncated)

Changelog

Sourced from react-dom's changelog.

19.0.0 (December 5, 2024)

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.

Note: To help make the upgrade to React 19 easier, we’ve published a react@18.3 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 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 or @​testing-library/react-native

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 for more details and guidance on codemodding.

React

• New JSX Transform is now required: We introduced a new JSX transform 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.

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Commits

• 989af12 Make prerendering always non-blocking with fix (#31452)
• e137890 [string-refs] cleanup string ref code (#31443)
• 07aa494 Remove enableRefAsProp feature flag (#30346)
• cae764c Revert "[Re-land] Make prerendering always non-blocking (#31268)" (#31355)
• d49123f Expose prerender() for SSG in stable (#31298)
• 6c4bbc7 [Re-land] Make prerendering always non-blocking (#31268)
• d8c90fa Disable infinite render loop detection (#31088)
• 67fee58 [Fizz] Start initial work immediately (#31079)
• 76aee6f Revert "Make prerendering always non-blocking" (#31080)
• 0f1856c Make prerendering always non-blocking (#31056)
• Additional commits viewable in compare view

Updates @types/react-dom from 18.3.0 to 19.0.4

Commits

• See full diff in compare view

Updates typescript from 5.6.2 to 5.8.2

Release notes

Sourced from typescript's releases.

TypeScript 5.8

For release notes, check out the release announcement.

• fixed issues query for Typescript 5.8.0 (Beta).
• fixed issues query for Typescript 5.8.1 (RC).
• fixed issues query for Typescript 5.8.2 (Stable).

Downloads are available on:

• npm

TypeScript 5.8 RC

For release notes, check out the release announcement.

• fixed issues query for Typescript 5.8.0 (Beta).
• fixed issues query for Typescript 5.8.1 (RC).

Downloads are available on:

• npm

TypeScript 5.8 Beta

For release notes, check out the release announcement.

• fixed issues query for Typescript 5.8.0 (Beta).

Downloads are available on:

• npm

TypeScript 5.7.3

For release notes, check out the release announcement.

• fixed issues query for Typescript 5.7.0 (Beta).
• fixed issues query for Typescript 5.7.1 (RC).
• fixed issues query for Typescript 5.7.2 (Stable).
• fixed issues query for Typescript 5.7.3 (Stable).

Downloads are available on npm

TypeScript 5.7

For release notes, check out the release announcement.

• fixed issues query for Typescript 5.7.0 (Beta).
• fixed issues query for Typescript 5.7.1 (RC).
• fixed issues query for Typescript 5.7.2 (Stable).

Downloads are available on:

• npm

TypeScript 5.7 RC

For release notes, check out the release announcement.

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Commits

• beb69e4 Bump version to 5.8.2 and LKG
• 8fdbd54 🤖 Pick PR #61210 (Fix mistakenly disallowed default e...) into release-5.8 (#...
• f4a3a8a 🤖 Pick PR #61175 (Ban import=require and export= unde...) into release-5.8 (#...
• 420ff06 Bump version to 5.8.1-rc and LKG
• 48eb13f Update LKG
• fb59c19 Merge remote-tracking branch 'origin/main' into release-5.8
• df342b7 Fixed rewriteRelativeImportExtensions for import() within call expression...
• 775412a Bump github/codeql-action from 3.28.8 to 3.28.9 in the github-actions group (...
• e1629e5 Pass ignoreErrors=true to more resolveEntityName callers (#61144)
• 6fd1799 Update LKG
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