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build(deps): Bump the react group with 13 updates#4363
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dependabot/npm_and_yarn/react-b363850811

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@dependabot dependabot Bot commented on behalf of github Jan 2, 2025 •
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Bumps the react group with 13 updates:

Package From To
react 18.3.1 19.0.0
@types/react 18.3.18 19.0.2
react-dom 18.3.1 19.0.0
@types/react-dom 18.3.5 19.0.2
react-is 18.3.1 19.0.0
@types/react-is 18.3.1 19.0.0
react-lottie-player 1.4.3 2.1.0
react-markdown 8.0.7 9.0.1
react-router-dom 5.3.4 7.1.1
react-syntax-highlighter 15.5.0 15.6.1
react-toastify 9.1.3 11.0.2
@testing-library/react-hooks 7.0.2 8.0.1
react-test-renderer 18.3.1 19.0.0

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 18.3.18 to 19.0.2

Commits

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.

... (truncated)

Commits

Updates @types/react-dom from 18.3.5 to 19.0.2

Commits

Updates react-is from 18.3.1 to 19.0.0

Release notes

Sourced from react-is'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-is'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

Updates @types/react-is from 18.3.1 to 19.0.0

Commits

Updates react-lottie-player from 1.4.3 to 2.1.0

Release notes

Sourced from react-lottie-player's releases.

v2.1.0

  • run yarn e4d0ba4
  • Merge pull request #129 from slevisp/react-19 ec04640
  • Update: react19 support d927ce0
  • Merge pull request #127 from mifi/dependabot/npm_and_yarn/braces-3.0.3 73ce23b
  • Bump braces from 3.0.2 to 3.0.3 2705658
  • Merge pull request #124 from mifi/dependabot/npm_and_yarn/tar-6.2.1 a91213f
  • Bump tar from 6.2.0 to 6.2.1 497294a
  • Merge pull request #123 from mifi/dependabot/npm_and_yarn/vite-5.1.7 e2a63ab
  • Bump vite from 5.1.6 to 5.1.7 a729252
  • Merge pull request #122 from mifi/dependabot/npm_and_yarn/follow-redirects-1.15.6 baf33bb
  • Bump follow-redirects from 1.15.4 to 1.15.6 6c4b612

mifi/react-lottie-player@v2.0.0...v2.1.0

v2.0.0

typescript improvements (some possibly breaking)

mifi/react-lottie-player@v1.5.6...v2.0.0

v1.5.6

  • upgrade to yarn4 5422ece
  • update types & update ref to accept Function per React.Ref type 7a4d36b

mifi/react-lottie-player@v1.5.5...v1.5.6

v1.5.5

  • Merge pull request #105 from KDederichs/bugfix/100-remove-defaultProps cbc88b4
  • chore: CS add ; 3bee1af
  • fix: introduce emptyObject and noOp df0326d
  • upgrade vite f8f8ae7
  • Merge pull request #96 from mifi/dependabot/npm_and_yarn/cacheable-request-10.2.7 bec3226
  • Merge pull request #98 from mifi/dependabot/npm_and_yarn/vite-4.0.5 ff0656e
  • Merge pull request #104 from mifi/dependabot/npm_and_yarn/word-wrap-1.2.4 a30f730
  • Bump word-wrap from 1.2.3 to 1.2.4 f9f14cf
  • revert linting change 90914be
  • fixed linting rules 0cdd0ef
  • Remove DefaultProps, use default params instead 7d7f76f
  • Merge pull request #102 from mifi/dependabot/npm_and_yarn/sideway/formula-3.0.1 eb9aea4
  • Bump @​sideway/formula from 3.0.0 to 3.0.1 acbaa13
  • Merge pull request #101 from mifi/dependabot/npm_and_yarn/semver-5.7.2 b66f211
  • Bump semver from 5.7.1 to 5.7.2 959b89b
  • Bump vite from 4.0.2 to 4.0.5 3733adc
  • Merge pull request #97 from thomasmarren/patch-1 d730f8b
  • Add RendererType as type argument to AnimationConfig 5de9838
  • Bump cacheable-request from 10.2.3 to 10.2.7 84825e9
  • Merge pull request #95 from mifi/dependabot/npm_and_yarn/http-cache-semantics-4.1.1 43d6fb9
  • Bump http-cache-semantics from 4.1.0 to 4.1.1 a577552
  • Update README.md b2fd5d2
  • fix links 5124d27

... (truncated)

Commits
  • b7459a6 2.1.0
  • e4d0ba4 run yarn
  • ec04640 Merge pull request #129 from slevisp/react-19
  • d927ce0 Update: react19 support
  • 73ce23b Merge pull request #127 from mifi/dependabot/npm_and_yarn/b...

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@dependabot dependabot Bot added dependencies Pull requests that update a dependency file javascript Pull requests that update Javascript code labels Jan 2, 2025
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@dependabot dependabot Bot force-pushed the dependabot/npm_and_yarn/react-b363850811 branch from d66e8dc to 58829c6 Compare January 2, 2025 19:13
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casibbald commented Jan 2, 2025

@dependabot rebase

@dependabot dependabot Bot force-pushed the dependabot/npm_and_yarn/react-b363850811 branch 3 times, most recently from 6903b2b to d5f704c Compare January 3, 2025 17:56
@erikgb erikgb mentioned this pull request Jan 3, 2025
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casibbald commented Jan 3, 2025

@dependabot recreate

@dependabot dependabot Bot force-pushed the dependabot/npm_and_yarn/react-b363850811 branch from d5f704c to f7a8d22 Compare January 3, 2025 20:34
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erikgb commented Jan 3, 2025

@dependabot unignore *

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dependabot Bot commented on behalf of github Jan 3, 2025

No dependency name (*) or ignore conditions found to unignore.

@erikgb erikgb mentioned this pull request Jan 3, 2025
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erikgb commented Jan 3, 2025

@dependabot recreate

@dependabot
build(deps): Bump the react group with 13 updates
8970463 
Bumps the react group with 13 updates:

| Package | From | To |
| --- | --- | --- |
| [react](https://github.com/facebook/react/tree/HEAD/packages/react) | `18.3.1` | `19.0.0` |
| [@types/react](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/react) | `18.3.18` | `19.0.2` |
| [react-dom](https://github.com/facebook/react/tree/HEAD/packages/react-dom) | `18.3.1` | `19.0.0` |
| [@types/react-dom](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/react-dom) | `18.3.5` | `19.0.2` |
| [react-is](https://github.com/facebook/react/tree/HEAD/packages/react-is) | `18.3.1` | `19.0.0` |
| [@types/react-is](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/react-is) | `18.3.1` | `19.0.0` |
| [react-lottie-player](https://github.com/mifi/react-lottie-player) | `1.4.3` | `2.1.0` |
| [react-markdown](https://github.com/remarkjs/react-markdown) | `8.0.7` | `9.0.1` |
| [react-router-dom](https://github.com/remix-run/react-router/tree/HEAD/packages/react-router-dom) | `5.3.4` | `7.1.1` |
| [react-syntax-highlighter](https://github.com/react-syntax-highlighter/react-syntax-highlighter) | `15.5.0` | `15.6.1` |
| [react-toastify](https://github.com/fkhadra/react-toastify) | `9.1.3` | `11.0.2` |
| [@testing-library/react-hooks](https://github.com/testing-library/react-hooks-testing-library) | `7.0.2` | `8.0.1` |
| [react-test-renderer](https://github.com/facebook/react/tree/HEAD/packages/react-test-renderer) | `18.3.1` | `19.0.0` |


Updates `react` from 18.3.1 to 19.0.0
- [Release notes](https://github.com/facebook/react/releases)
- [Changelog](https://github.com/facebook/react/blob/main/CHANGELOG.md)
- [Commits](https://github.com/facebook/react/commits/v19.0.0/packages/react)

Updates `@types/react` from 18.3.18 to 19.0.2
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/react)

Updates `react-dom` from 18.3.1 to 19.0.0
- [Release notes](https://github.com/facebook/react/releases)
- [Changelog](https://github.com/facebook/react/blob/main/CHANGELOG.md)
- [Commits](https://github.com/facebook/react/commits/v19.0.0/packages/react-dom)

Updates `@types/react-dom` from 18.3.5 to 19.0.2
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/react-dom)

Updates `react-is` from 18.3.1 to 19.0.0
- [Release notes](https://github.com/facebook/react/releases)
- [Changelog](https://github.com/facebook/react/blob/main/CHANGELOG.md)
- [Commits](https://github.com/facebook/react/commits/v19.0.0/packages/react-is)

Updates `@types/react-is` from 18.3.1 to 19.0.0
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/react-is)

Updates `react-lottie-player` from 1.4.3 to 2.1.0
- [Release notes](https://github.com/mifi/react-lottie-player/releases)
- [Commits](mifi/react-lottie-player@v1.4.3...v2.1.0)

Updates `react-markdown` from 8.0.7 to 9.0.1
- [Release notes](https://github.com/remarkjs/react-markdown/releases)
- [Changelog](https://github.com/remarkjs/react-markdown/blob/main/changelog.md)
- [Commits](remarkjs/react-markdown@8.0.7...9.0.1)

Updates `react-router-dom` from 5.3.4 to 7.1.1
- [Release notes](https://github.com/remix-run/react-router/releases)
- [Changelog](https://github.com/remix-run/react-router/blob/main/packages/react-router-dom/CHANGELOG.md)
- [Commits](https://github.com/remix-run/react-router/commits/react-router-dom@7.1.1/packages/react-router-dom)

Updates `react-syntax-highlighter` from 15.5.0 to 15.6.1
- [Release notes](https://github.com/react-syntax-highlighter/react-syntax-highlighter/releases)
- [Changelog](https://github.com/react-syntax-highlighter/react-syntax-highlighter/blob/master/CHANGELOG.MD)
- [Commits](react-syntax-highlighter/react-syntax-highlighter@15.5.0...v15.6.1)

Updates `react-toastify` from 9.1.3 to 11.0.2
- [Release notes](https://github.com/fkhadra/react-toastify/releases)
- [Commits](fkhadra/react-toastify@v9.1.3...v11.0.2)

Updates `@testing-library/react-hooks` from 7.0.2 to 8.0.1
- [Release notes](https://github.com/testing-library/react-hooks-testing-library/releases)
- [Changelog](https://github.com/testing-library/react-hooks-testing-library/blob/main/CHANGELOG.md)
- [Commits](testing-library/react-hooks-testing-library@v7.0.2...v8.0.1)

Updates `@types/react-dom` from 18.3.5 to 19.0.2
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/react-dom)

Updates `@types/react-is` from 18.3.1 to 19.0.0
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/react-is)

Updates `react-test-renderer` from 18.3.1 to 19.0.0
- [Release notes](https://github.com/facebook/react/releases)
- [Changelog](https://github.com/facebook/react/blob/main/CHANGELOG.md)
- [Commits](https://github.com/facebook/react/commits/v19.0.0/packages/react-test-renderer)

---
updated-dependencies:
- dependency-name: react
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: react
- dependency-name: "@types/react"
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: react
- dependency-name: react-dom
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: react
- dependency-name: "@types/react-dom"
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: react
- dependency-name: react-is
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: react
- dependency-name: "@types/react-is"
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: react
- dependency-name: react-lottie-player
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: react
- dependency-name: react-markdown
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: react
- dependency-name: react-router-dom
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: react
- dependency-name: react-syntax-highlighter
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: react
- dependency-name: react-toastify
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: react
- dependency-name: "@testing-library/react-hooks"
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: react
- dependency-name: "@types/react-dom"
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: react
- dependency-name: "@types/react-is"
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: react
- dependency-name: react-test-renderer
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: react
...

Signed-off-by: dependabot[bot] <support@github.com>
@dependabot dependabot Bot force-pushed the dependabot/npm_and_yarn/react-b363850811 branch from f7a8d22 to 8970463 Compare January 3, 2025 21:51
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dependabot Bot commented on behalf of github Jan 3, 2025

Looks like these dependencies are updatable in another way, so this is no longer needed.

@dependabot dependabot Bot closed this Jan 3, 2025
@dependabot dependabot Bot deleted the dependabot/npm_and_yarn/react-b363850811 branch January 3, 2025 22:04
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