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react-translations-bot committed Sep 23, 2024
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12 changes: 6 additions & 6 deletions .github/workflows/analyze.yml
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Expand Up @@ -11,18 +11,18 @@ jobs:
analyze:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- uses: actions/checkout@v3

- name: Set up node
uses: actions/setup-node@v1
uses: actions/setup-node@v3
with:
node-version: '20.x'

- name: Install dependencies
uses: bahmutov/[email protected]

- name: Restore next build
uses: actions/cache@v2
uses: actions/cache@v3
id: restore-build-cache
env:
cache-name: cache-next-build
Expand All @@ -41,7 +41,7 @@ jobs:
run: npx -p [email protected] report

- name: Upload bundle
uses: actions/upload-artifact@v2
uses: actions/upload-artifact@v3
with:
path: .next/analyze/__bundle_analysis.json
name: bundle_analysis.json
Expand Down Expand Up @@ -73,7 +73,7 @@ jobs:
run: ls -laR .next/analyze/base && npx -p nextjs-bundle-analysis compare

- name: Upload analysis comment
uses: actions/upload-artifact@v2
uses: actions/upload-artifact@v3
with:
name: analysis_comment.txt
path: .next/analyze/__bundle_analysis_comment.txt
Expand All @@ -82,7 +82,7 @@ jobs:
run: echo ${{ github.event.number }} > ./pr_number

- name: Upload PR number
uses: actions/upload-artifact@v2
uses: actions/upload-artifact@v3
with:
name: pr_number
path: ./pr_number
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2 changes: 1 addition & 1 deletion src/components/Layout/Footer.tsx
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Expand Up @@ -283,7 +283,7 @@ export function Footer() {
<div
className="text-xs text-left rtl:text-right mt-2 pe-0.5"
dir="ltr">
&copy;{new Date().getFullYear()}
Copyright &copy; Meta Platforms, Inc
</div>
<div
className="uwu-visible text-xs cursor-pointer hover:text-link hover:dark:text-link-dark hover:underline"
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68 changes: 68 additions & 0 deletions src/content/community/conferences.md
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Expand Up @@ -10,6 +10,7 @@ Do you know of a local React.js conference? Add it here! (Please keep the list c

## Upcoming Conferences {/*upcoming-conferences*/}

<<<<<<< HEAD
### React Paris 2024 {/*react-paris-2024*/}
March 22, 2024. In-person in Paris, France + Remote (hybrid)

Expand Down Expand Up @@ -82,6 +83,8 @@ July 25, 2024. In-person in Berlin, Germany + remote (hybrid event)

[Website](https://thegeekconf.com) - [Twitter](https://twitter.com/thegeekconf)

=======
>>>>>>> c003ac4eb130fca70b88cf3a1b80ce5f76c51ae3
### React Universe Conf 2024 {/*react-universe-conf-2024*/}
September 5-6, 2024. Wrocław, Poland.

Expand All @@ -102,8 +105,73 @@ October 17 - 19, 2024. In-person in Goa, India (hybrid event) + Oct 15 2024 - re

[Website](https://www.reactindia.io) - [Twitter](https://twitter.com/react_india) - [Facebook](https://www.facebook.com/ReactJSIndia) - [Youtube](https://www.youtube.com/channel/UCaFbHCBkPvVv1bWs_jwYt3w)

<<<<<<< HEAD
## Past Conferences {/*past-conferences*/}

=======
### React Brussels 2024 {/*react-brussels-2024*/}
October 18, 2024. In-person in Brussels, Belgium (hybrid event)

[Website](https://www.react.brussels/) - [Twitter](https://x.com/BrusselsReact)

### React Advanced London 2024 {/*react-advanced-london-2024*/}
October 25 & 28, 2024. In-person in London, UK + online (hybrid event)

[Website](https://reactadvanced.com/) - [Twitter](https://x.com/reactadvanced)

### React Summit US 2024 {/*react-summit-us-2024*/}
November 19 & 22, 2024. In-person in New York, USA + online (hybrid event)

[Website](https://reactsummit.us/) - [Twitter](https://twitter.com/reactsummit) - [Videos](https://portal.gitnation.org/)

### React Africa 2024 {/*react-africa-2024*/}
November 29, 2024. In-person in Casablanca, Morocco (hybrid event)

[Website](https://react-africa.com/) - [Twitter](https://x.com/BeJS_)

### React Day Berlin 2024 {/*react-day-berlin-2024*/}
December 13 & 16, 2024. In-person in Berlin, Germany + remote (hybrid event)

[Website](https://reactday.berlin/) - [Twitter](https://x.com/reactdayberlin)

## Past Conferences {/*past-conferences*/}

### React Rally 2024 🐙 {/*react-rally-2024*/}
August 12-13, 2024. Park City, UT, USA

[Website](https://reactrally.com) - [Twitter](https://twitter.com/ReactRally) - [YouTube](https://www.youtube.com/channel/UCXBhQ05nu3L1abBUGeQ0ahw)

### The Geek Conf 2024 {/*the-geek-conf-2024*/}
July 25, 2024. In-person in Berlin, Germany + remote (hybrid event)

[Website](https://thegeekconf.com) - [Twitter](https://twitter.com/thegeekconf)

### Chain React 2024 {/*chain-react-2024*/}
July 17-19, 2024. In-person in Portland, OR, USA

[Website](https://chainreactconf.com) - [Twitter](https://twitter.com/ChainReactConf)

### React Nexus 2024 {/*react-nexus-2024*/}
July 04 & 05, 2024. Bangalore, India (In-person event)

[Website](https://reactnexus.com/) - [Twitter](https://twitter.com/ReactNexus) - [Linkedin](https://www.linkedin.com/company/react-nexus) - [YouTube](https://www.youtube.com/reactify_in)

### React Summit 2024 {/*react-summit-2024*/}
June 14 & 18, 2024. In-person in Amsterdam, Netherlands + remote (hybrid event)

[Website](https://reactsummit.com/) - [Twitter](https://twitter.com/reactsummit) - [Videos](https://portal.gitnation.org/)

### React Norway 2024 {/*react-norway-2024*/}
June 14, 2024. In-person at Farris Bad Hotel in Larvik, Norway and online (hybrid event).

[Website](https://reactnorway.com/) - [Twitter](https://twitter.com/ReactNorway)

### Render(ATL) 2024 🍑 {/*renderatl-2024-*/}
June 12 - June 14, 2024. Atlanta, GA, USA

[Website](https://renderatl.com) - [Discord](https://www.renderatl.com/discord) - [Twitter](https://twitter.com/renderATL) - [Instagram](https://www.instagram.com/renderatl/) - [Facebook](https://www.facebook.com/renderatl/) - [LinkedIn](https://www.linkedin.com/company/renderatl) - [Podcast](https://www.renderatl.com/culture-and-code#/)

>>>>>>> c003ac4eb130fca70b88cf3a1b80ce5f76c51ae3
### Frontend Nation 2024 {/*frontend-nation-2024*/}
June 4 - 7, 2024. Online

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2 changes: 1 addition & 1 deletion src/content/learn/you-might-not-need-an-effect.md
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Expand Up @@ -408,7 +408,7 @@ function Game() {
There are two problems with this code.
First problem is that it is very inefficient: the component (and its children) have to re-render between each `set` call in the chain. In the example above, in the worst case (`setCard` → render → `setGoldCardCount` → render → `setRound` → render → `setIsGameOver` → render) there are three unnecessary re-renders of the tree below.
The first problem is that it is very inefficient: the component (and its children) have to re-render between each `set` call in the chain. In the example above, in the worst case (`setCard` → render → `setGoldCardCount` → render → `setRound` → render → `setIsGameOver` → render) there are three unnecessary re-renders of the tree below.
The second problem is that even if it weren't slow, as your code evolves, you will run into cases where the "chain" you wrote doesn't fit the new requirements. Imagine you are adding a way to step through the history of the game moves. You'd do it by updating each state variable to a value from the past. However, setting the `card` state to a value from the past would trigger the Effect chain again and change the data you're showing. Such code is often rigid and fragile.
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2 changes: 1 addition & 1 deletion src/content/reference/react-dom/components/index.md
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Expand Up @@ -34,7 +34,7 @@ They are special in React because passing the `value` prop to them makes them *[

## Resource and Metadata Components {/*resource-and-metadata-components*/}

These bulit-in browser components let you load external resources or annotate the document with metadata:
These built-in browser components let you load external resources or annotate the document with metadata:

* [`<link>`](/reference/react-dom/components/link)
* [`<meta>`](/reference/react-dom/components/meta)
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4 changes: 2 additions & 2 deletions src/content/reference/react/cache.md
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Expand Up @@ -226,7 +226,7 @@ By caching a long-running data fetch, you can kick off asynchronous work prior t
```jsx [[2, 6, "await getUser(id)"], [1, 17, "getUser(id)"]]
const getUser = cache(async (id) => {
return await db.user.query(id);
})
});

async function Profile({id}) {
const user = await getUser(id);
Expand Down Expand Up @@ -327,7 +327,7 @@ In general, you should use [`useMemo`](/reference/react/useMemo) for caching a e
'use client';

function WeatherReport({record}) {
const avgTemp = useMemo(() => calculateAvg(record)), record);
const avgTemp = useMemo(() => calculateAvg(record), record);
// ...
}

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2 changes: 1 addition & 1 deletion src/content/reference/react/index.md
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Expand Up @@ -15,7 +15,7 @@ The React reference documentation is broken down into functional subsections:
Programmatic React features:

* [Hooks](/reference/react/hooks) - Use different React features from your components.
* [Components](/reference/react/components) - Documents built-in components that you can use in your JSX.
* [Components](/reference/react/components) - Built-in components that you can use in your JSX.
* [APIs](/reference/react/apis) - APIs that are useful for defining components.
* [Directives](/reference/rsc/directives) - Provide instructions to bundlers compatible with React Server Components.

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2 changes: 1 addition & 1 deletion src/content/reference/react/lazy.md
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Expand Up @@ -78,7 +78,7 @@ Now that your component's code loads on demand, you also need to specify what sh
<Suspense fallback={<Loading />}>
<h2>Preview</h2>
<MarkdownPreview />
</Suspense>
</Suspense>
```

In this example, the code for `MarkdownPreview` won't be loaded until you attempt to render it. If `MarkdownPreview` hasn't loaded yet, `Loading` will be shown in its place. Try ticking the checkbox:
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8 changes: 4 additions & 4 deletions src/content/reference/react/useCallback.md
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Expand Up @@ -711,7 +711,7 @@ function ChatRoom({ roomId }) {

useEffect(() => {
const options = createOptions();
const connection = createConnection();
const connection = createConnection(options);
connection.connect();
// ...
```
Expand All @@ -722,7 +722,7 @@ This creates a problem. [Every reactive value must be declared as a dependency o
```js {6}
useEffect(() => {
const options = createOptions();
const connection = createConnection();
const connection = createConnection(options);
connection.connect();
return () => connection.disconnect();
}, [createOptions]); // 🔴 Problem: This dependency changes on every render
Expand All @@ -744,7 +744,7 @@ function ChatRoom({ roomId }) {

useEffect(() => {
const options = createOptions();
const connection = createConnection();
const connection = createConnection(options);
connection.connect();
return () => connection.disconnect();
}, [createOptions]); // ✅ Only changes when createOptions changes
Expand All @@ -766,7 +766,7 @@ function ChatRoom({ roomId }) {
}

const options = createOptions();
const connection = createConnection();
const connection = createConnection(options);
connection.connect();
return () => connection.disconnect();
}, [roomId]); // ✅ Only changes when roomId changes
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77 changes: 77 additions & 0 deletions src/content/reference/react/useMemo.md
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Expand Up @@ -1056,6 +1056,83 @@ Keep in mind that you need to run React in production mode, disable [React Devel

---

### Preventing an Effect from firing too often {/*preventing-an-effect-from-firing-too-often*/}

Sometimes, you might want to use a value inside an [Effect:](/learn/synchronizing-with-effects)

```js {4-7,10}
function ChatRoom({ roomId }) {
const [message, setMessage] = useState('');

const options = {
serverUrl: 'https://localhost:1234',
roomId: roomId
}

useEffect(() => {
const connection = createConnection(options);
connection.connect();
// ...
```
This creates a problem. [Every reactive value must be declared as a dependency of your Effect.](/learn/lifecycle-of-reactive-effects#react-verifies-that-you-specified-every-reactive-value-as-a-dependency) However, if you declare `options` as a dependency, it will cause your Effect to constantly reconnect to the chat room:
```js {5}
useEffect(() => {
const connection = createConnection(options);
connection.connect();
return () => connection.disconnect();
}, [options]); // 🔴 Problem: This dependency changes on every render
// ...
```
To solve this, you can wrap the object you need to call from an Effect in `useMemo`:
```js {4-9,16}
function ChatRoom({ roomId }) {
const [message, setMessage] = useState('');

const options = useMemo(() => {
return {
serverUrl: 'https://localhost:1234',
roomId: roomId
};
}, [roomId]); // ✅ Only changes when roomId changes

useEffect(() => {
const options = createOptions();
const connection = createConnection(options);
connection.connect();
return () => connection.disconnect();
}, [options]); // ✅ Only changes when createOptions changes
// ...
```
This ensures that the `options` object is the same between re-renders if `useMemo` returns the cached object.
However, since `useMemo` is performance optimization, not a semantic guarantee, React may throw away the cached value if [there is a specific reason to do that](#caveats). This will also cause the effect to re-fire, **so it's even better to remove the need for a function dependency** by moving your object *inside* the Effect:
```js {5-8,13}
function ChatRoom({ roomId }) {
const [message, setMessage] = useState('');

useEffect(() => {
const options = { // ✅ No need for useMemo or object dependencies!
serverUrl: 'https://localhost:1234',
roomId: roomId
}

const connection = createConnection(options);
connection.connect();
return () => connection.disconnect();
}, [roomId]); // ✅ Only changes when roomId changes
// ...
```
Now your code is simpler and doesn't need `useMemo`. [Learn more about removing Effect dependencies.](/learn/removing-effect-dependencies#move-dynamic-objects-and-functions-inside-your-effect)
### Memoizing a dependency of another Hook {/*memoizing-a-dependency-of-another-hook*/}
Suppose you have a calculation that depends on an object created directly in the component body:
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1 change: 1 addition & 0 deletions src/content/reference/react/useReducer.md
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Expand Up @@ -52,6 +52,7 @@ function MyComponent() {
#### Caveats {/*caveats*/}
* `useReducer` is a Hook, so you can only call it **at the top level of your component** or your own Hooks. You can't call it inside loops or conditions. If you need that, extract a new component and move the state into it.
* The `dispatch` function has a stable identity, so you will often see it omitted from effect dependencies, but including it will not cause the effect to fire. If the linter lets you omit a dependency without errors, it is safe to do. [Learn more about removing Effect dependencies.](/learn/removing-effect-dependencies#move-dynamic-objects-and-functions-inside-your-effect)
* In Strict Mode, React will **call your reducer and initializer twice** in order to [help you find accidental impurities.](#my-reducer-or-initializer-function-runs-twice) This is development-only behavior and does not affect production. If your reducer and initializer are pure (as they should be), this should not affect your logic. The result from one of the calls is ignored.
---
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2 changes: 2 additions & 0 deletions src/content/reference/react/useState.md
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Expand Up @@ -85,6 +85,8 @@ function handleClick() {
* React [batches state updates.](/learn/queueing-a-series-of-state-updates) It updates the screen **after all the event handlers have run** and have called their `set` functions. This prevents multiple re-renders during a single event. In the rare case that you need to force React to update the screen earlier, for example to access the DOM, you can use [`flushSync`.](/reference/react-dom/flushSync)
* The `set` function has a stable identity, so you will often see it omitted from effect dependencies, but including it will not cause the effect to fire. If the linter lets you omit a dependency without errors, it is safe to do. [Learn more about removing Effect dependencies.](/learn/removing-effect-dependencies#move-dynamic-objects-and-functions-inside-your-effect)
* Calling the `set` function *during rendering* is only allowed from within the currently rendering component. React will discard its output and immediately attempt to render it again with the new state. This pattern is rarely needed, but you can use it to **store information from the previous renders**. [See an example below.](#storing-information-from-previous-renders)
* In Strict Mode, React will **call your updater function twice** in order to [help you find accidental impurities.](#my-initializer-or-updater-function-runs-twice) This is development-only behavior and does not affect production. If your updater function is pure (as it should be), this should not affect the behavior. The result from one of the calls will be ignored.
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2 changes: 1 addition & 1 deletion src/content/reference/react/useSyncExternalStore.md
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Expand Up @@ -41,7 +41,7 @@ It returns the snapshot of the data in the store. You need to pass two functions
#### Parameters {/*parameters*/}
* `subscribe`: A function that takes a single `callback` argument and subscribes it to the store. When the store changes, it should invoke the provided `callback`. This will cause the component to re-render. The `subscribe` function should return a function that cleans up the subscription.
* `subscribe`: A function that takes a single `callback` argument and subscribes it to the store. When the store changes, it should invoke the provided `callback`, which will cause React to re-call `getSnapshot` and (if needed) re-render the component. The `subscribe` function should return a function that cleans up the subscription.
* `getSnapshot`: A function that returns a snapshot of the data in the store that's needed by the component. While the store has not changed, repeated calls to `getSnapshot` must return the same value. If the store changes and the returned value is different (as compared by [`Object.is`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/is)), React re-renders the component.
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2 changes: 2 additions & 0 deletions src/content/reference/react/useTransition.md
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Expand Up @@ -80,6 +80,8 @@ function TabContainer() {

* The function you pass to `startTransition` must be synchronous. React immediately executes this function, marking all state updates that happen while it executes as Transitions. If you try to perform more state updates later (for example, in a timeout), they won't be marked as Transitions.

* The `startTransition` function has a stable identity, so you will often see it omitted from effect dependencies, but including it will not cause the effect to fire. If the linter lets you omit a dependency without errors, it is safe to do. [Learn more about removing Effect dependencies.](/learn/removing-effect-dependencies#move-dynamic-objects-and-functions-inside-your-effect)

* A state update marked as a Transition will be interrupted by other state updates. For example, if you update a chart component inside a Transition, but then start typing into an input while the chart is in the middle of a re-render, React will restart the rendering work on the chart component after handling the input update.

* Transition updates can't be used to control text inputs.
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2 changes: 1 addition & 1 deletion src/content/reference/rsc/server-actions.md
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Expand Up @@ -53,7 +53,7 @@ When React renders the `EmptyNote` Server Component, it will create a reference
export default function Button({onClick}) {
console.log(onClick);
// {$$typeof: Symbol.for("react.server.reference"), $$id: 'createNoteAction'}
return <button onClick={onClick}>Create Empty Note</button>
return <button onClick={() => onClick()}>Create Empty Note</button>
}
```

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