update legacy React website links in docs (facebook#4693)

Author: Simek

docs/animated.md

@@ -7,7 +7,7 @@ The `Animated` library is designed to make animations fluid, powerful, and painl
 
 The core workflow for creating an animation is to create an `Animated.Value`, hook it up to one or more style attributes of an animated component, and then drive updates via animations using `Animated.timing()`.
 
-> Don't modify the animated value directly. You can use the [`useRef` Hook](https://reactjs.org/docs/hooks-reference.html#useref) to return a mutable ref object. This ref object's `current` property is initialized as the given argument and persists throughout the component lifecycle.
+> Don't modify the animated value directly. You can use the [`useRef` Hook](https://react.dev/reference/react/useRef) to return a mutable ref object. This ref object's `current` property is initialized as the given argument and persists throughout the component lifecycle.
 
 ## Example
 

docs/fast-refresh.md

@@ -19,7 +19,7 @@ If you make a **runtime error during the module initialization** (for example, t
 
 If you make a mistake that leads to a **runtime error inside your component**, the Fast Refresh session will _also_ continue after you fix the error. In that case, React will remount your application using the updated code.
 
-If you have [error boundaries](https://reactjs.org/docs/error-boundaries.html) in your app (which is a good idea for graceful failures in production), they will retry rendering on the next edit after a redbox. In that sense, having an error boundary can prevent you from always getting kicked out to the root app screen. However, keep in mind that error boundaries shouldn't be _too_ granular. They are used by React in production, and should always be designed intentionally.
+If you have [error boundaries](https://react.dev/reference/react/Component#catching-rendering-errors-with-an-error-boundary) in your app (which is a good idea for graceful failures in production), they will retry rendering on the next edit after a redbox. In that sense, having an error boundary can prevent you from always getting kicked out to the root app screen. However, keep in mind that error boundaries shouldn't be _too_ granular. They are used by React in production, and should always be designed intentionally.
 
 ## Limitations
 

docs/imagebackground.md

@@ -73,9 +73,9 @@ Inherits [Image Props](image.md#props).
 
 Allows to set a reference to the inner `Image` component
 
-| Type                                                  |
-| ----------------------------------------------------- |
-| [Ref](https://reactjs.org/docs/refs-and-the-dom.html) |
+| Type                                                          |
+| ------------------------------------------------------------- |
+| [Ref](https://react.dev/learn/manipulating-the-dom-with-refs) |
 
 ---
 

docs/intro-react-native-components.md

@@ -6,7 +6,7 @@ description: 'React Native lets you compose app interfaces using Native Componen
 
 import ThemedImage from '@theme/ThemedImage';
 
-React Native is an open source framework for building Android and iOS applications using [React](https://reactjs.org/) and the app platform’s native capabilities. With React Native, you use JavaScript to access your platform’s APIs as well as to describe the appearance and behavior of your UI using React components: bundles of reusable, nestable code. You can learn more about React in the next section. But first, let’s cover how components work in React Native.
+React Native is an open source framework for building Android and iOS applications using [React](https://react.dev/) and the app platform’s native capabilities. With React Native, you use JavaScript to access your platform’s APIs as well as to describe the appearance and behavior of your UI using React components: bundles of reusable, nestable code. You can learn more about React in the next section. But first, let’s cover how components work in React Native.
 
 ## Views and mobile development
 

docs/javascript-environment.md

@@ -71,7 +71,7 @@ A full list of React Native's enabled transformations can be found in [@react-na
   <TableRow name="Babel Template" code="template(`const %%importName%% = require(%%source%%);`);" url="https://babeljs.io/docs/en/babel-template" />
   <TableRow name="Flow" code="function foo(x: ?number): string {};" url="https://flowtype.org/" />
   <TableRow name="ESM to CJS" code="export default 42;" url="https://babeljs.io/docs/en/babel-plugin-transform-modules-commonjs" />
-  <TableRow name="JSX" code="<View style={{color: 'red'}} />" url="https://reactjs.org/docs/jsx-in-depth" />
+  <TableRow name="JSX" code="<View style={{color: 'red'}} />" url="https://react.dev/learn/writing-markup-with-jsx" />
   <TableRow name="Object Assign" code="Object.assign(a, b);" url="https://babeljs.io/docs/en/babel-plugin-transform-object-assign" />
   <TableRow name="React Display Name" code="const bar = createReactClass({});" url="https://babeljs.io/docs/en/babel-plugin-transform-react-display-name" />
   <TableRow name="TypeScript" code="function foo(x: {hello: true, target: 'react native!'}): string {};" url="https://www.typescriptlang.org/" />

docs/legacy/direct-manipulation.md

@@ -13,7 +13,7 @@ Use `setNativeProps` when frequent re-rendering creates a performance bottleneck
 Direct manipulation will not be a tool that you reach for frequently. You will typically only be using it for creating continuous animations to avoid the overhead of rendering the component hierarchy and reconciling many views.
 `setNativeProps` is imperative and stores state in the native layer (DOM, UIView, etc.) and not within your React components, which makes your code more difficult to reason about.
 
-Before you use it, try to solve your problem with `setState` and [`shouldComponentUpdate`](https://reactjs.org/docs/optimizing-performance.html#shouldcomponentupdate-in-action).
+Before you use it, try to solve your problem with `setState` and [`shouldComponentUpdate`](https://react.dev/reference/react/Component#shouldcomponentupdate).
 :::
 
 ## setNativeProps with TouchableOpacity
@@ -278,7 +278,7 @@ If you update a property that is also managed by the render function, you might
 
 ## setNativeProps & shouldComponentUpdate
 
-By [intelligently applying `shouldComponentUpdate`](https://reactjs.org/docs/optimizing-performance.html#avoid-reconciliation) you can avoid the unnecessary overhead involved in reconciling unchanged component subtrees, to the point where it may be performant enough to use `setState` instead of `setNativeProps`.
+By [intelligently applying `shouldComponentUpdate`](https://react.dev/reference/react/Component#shouldcomponentupdate) you can avoid the unnecessary overhead involved in reconciling unchanged component subtrees, to the point where it may be performant enough to use `setState` instead of `setNativeProps`.
 
 ## Other native methods
 

docs/profiling.md

@@ -93,7 +93,7 @@ If you identified a JS problem, look for clues in the specific JS that you're ex
 
 ![Too much JS](/docs/assets/SystraceBadJS2.png)
 
-This doesn't seem right. Why is it being called so often? Are they actually different events? The answers to these questions will probably depend on your product code. And many times, you'll want to look into [shouldComponentUpdate](https://reactjs.org/docs/react-component.html#shouldcomponentupdate).
+This doesn't seem right. Why is it being called so often? Are they actually different events? The answers to these questions will probably depend on your product code. And many times, you'll want to look into [shouldComponentUpdate](https://react.dev/reference/react/Component#shouldcomponentupdate).
 
 ## Resolving native UI Issues
 

docs/roottag.md

@@ -21,7 +21,7 @@ Another use case for `RootTag` is when your app needs to attribute a certain Jav
 
 ## How to access the RootTag... if you need it
 
-In versions 0.65 and below, RootTag is accessed via a [legacy context](https://github.com/facebook/react-native/blob/v0.64.1/Libraries/ReactNative/AppContainer.js#L56). To prepare React Native for Concurrent features coming in React 18 and beyond, we are migrating to the latest [Context API](https://reactjs.org/docs/context.html#api) via `RootTagContext` in 0.66. Version 0.65 supports both the legacy context and the recommended `RootTagContext` to allow developers time to migrate their call-sites. See the breaking changes summary.
+In versions 0.65 and below, RootTag is accessed via a [legacy context](https://github.com/facebook/react-native/blob/v0.64.1/Libraries/ReactNative/AppContainer.js#L56). To prepare React Native for Concurrent features coming in React 18 and beyond, we are migrating to the latest [Context API](https://react.dev/reference/react/createContext) via `RootTagContext` in 0.66. Version 0.65 supports both the legacy context and the recommended `RootTagContext` to allow developers time to migrate their call-sites. See the breaking changes summary.
 
 How to access `RootTag` via the `RootTagContext`.
 
@@ -59,7 +59,7 @@ class ScreenB extends React.Component {
 }
 ```
 
-Learn more about the Context API for [classes](https://reactjs.org/docs/context.html#classcontexttype) and [hooks](https://reactjs.org/docs/hooks-reference.html#usecontext) from the React docs.
+Learn more about the Context API for [classes](https://react.dev/reference/react/Component#static-contexttype) and [hooks](https://react.dev/reference/react/useContext) from the React docs.
 
 ### Breaking Change in 0.65
 

docs/testing-overview.md

@@ -127,8 +127,8 @@ For example, if you have a button that has an `onPress` listener, you want to te
 
 There are several libraries that can help you testing these:
 
-- React’s [Test Renderer](https://reactjs.org/docs/test-renderer.html), developed alongside its core, provides a React renderer that can be used to render React components to pure JavaScript objects, without depending on the DOM or a native mobile environment.
 - [React Native Testing Library](https://callstack.github.io/react-native-testing-library/) builds on top of React’s test renderer and adds `fireEvent` and `query` APIs described in the next paragraph.
+- [Deprecated] React’s [Test Renderer](https://react.dev/blog/2024/04/25/react-19-upgrade-guide#deprecated-react-test-renderer), developed alongside its core, provides a React renderer that can be used to render React components to pure JavaScript objects, without depending on the DOM or a native mobile environment.
 
 > Component tests are only JavaScript tests running in Node.js environment. They do _not_ take into account any iOS, Android, or other platform code which is backing the React Native components. It follows that they cannot give you a 100% confidence that everything works for the user. If there is a bug in the iOS or Android code, they will not find it.
 
@@ -261,7 +261,7 @@ We hope you enjoyed reading and learned something from this guide. There are man
 
 ### Links
 
-- [React testing overview](https://reactjs.org/docs/testing.html)
+- [React testing overview](https://react.dev/reference/react/act)
 - [React Native Testing Library](https://callstack.github.io/react-native-testing-library/)
 - [Jest docs](https://jestjs.io/docs/en/tutorial-react-native)
 - [Detox](https://github.com/wix/detox/)

docs/the-new-architecture/direct-manipulation.md

@@ -13,7 +13,7 @@ Use `setNativeProps` when frequent re-rendering creates a performance bottleneck
 Direct manipulation will not be a tool that you reach for frequently. You will typically only be using it for creating continuous animations to avoid the overhead of rendering the component hierarchy and reconciling many views.
 `setNativeProps` is imperative and stores state in the native layer (DOM, UIView, etc.) and not within your React components, which makes your code more difficult to reason about.
 
-Before you use it, try to solve your problem with `setState` and [`shouldComponentUpdate`](https://reactjs.org/docs/optimizing-performance.html#shouldcomponentupdate-in-action).
+Before you use it, try to solve your problem with `setState` and [`shouldComponentUpdate`](https://react.dev/reference/react/Component#shouldcomponentupdate).
 :::
 
 ## setNativeProps to edit TextInput value