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merged 21 commits into from
May 19, 2025
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73d7073
fix: correct overlay highlighting in code examples (#7669)
mrbadri May 15, 2025
4a7bdc1
fix: the value property of checkbox to the checked property (#7804)
kosh-jp May 16, 2025
ae4a40a
No need for useState here — useCounter handles the state internally (…
gbhardwaj00 May 16, 2025
a73055f
docs: fix misplaced prepositional phrase error (#7799)
mehmetmalli May 16, 2025
e2d9fd7
Fix wrong documentation for effect events (#7800)
gbhardwaj00 May 16, 2025
b92bb59
Remove stray console.log and image (#7814)
rickhanlonii May 16, 2025
b3b2166
fix(template): remove unnecessary import of React in template code (#…
dahoho May 16, 2025
9fb0519
fix(reference): correct singular form of 'Server Functions' to 'Serve…
dahoho May 16, 2025
69ce5d3
Add bold mono font (#7815)
rickhanlonii May 16, 2025
8b2fe2b
Remove TODO comments and convert them to issues (#7743)
BartoszKlonowski May 16, 2025
00587d6
Add example of `useActionState` handling execution order (#7733)
ajits01 May 16, 2025
79e1c48
docs: update vite link (#7784)
bornkiss May 16, 2025
c289cd0
docs: add bsky link (#7781)
bornkiss May 16, 2025
7ab1969
React Montreal Meetings have a new link (#7809)
EricCote May 16, 2025
f275c9d
fix: remove useless content (#6615)
loveloki May 17, 2025
0b68054
fix: wrong verb tense in doc (#7818)
aalhoura May 17, 2025
65d297e
fix: typo in challenge solution (#7816)
aalhoura May 17, 2025
dfec150
merging all conflicts
react-translations-bot May 19, 2025
94453f1
Resolve merge conflicts
alinkedd May 19, 2025
5212246
Add translations for the 500 page
alinkedd May 19, 2025
7e6a769
Add versions and blog intro translations, add related changes
alinkedd May 19, 2025
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2 changes: 2 additions & 0 deletions TRANSLATION.md
Original file line number Diff line number Diff line change
Expand Up @@ -180,11 +180,13 @@
| package registry | реєстр пакетів |
| paint | фарбування, перефарбування |
| performance | продуктивність (TODO: розглянути "швидкодію") |
| (blog) post | допис (у блозі) |
| prop | проп |
| props | пропси |
| production | публічне середовище; впровадження |
| production mode | (у режимі) публічного середовища; режим публічного впровадження |
| reducer | редюсер |
| release | реліз |
| reuse | повторне використання, перевикористання |
| React | React |
| React element | React-елемент, елемент React |
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3 changes: 2 additions & 1 deletion src/components/Layout/HomeContent.js
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Expand Up @@ -864,7 +864,8 @@ function ExampleLayout({
</div>
<div
ref={contentRef}
className="relative mt-0 lg:-my-20 w-full p-2.5 xs:p-5 lg:p-10 flex grow justify-center">
className="relative mt-0 lg:-my-20 w-full p-2.5 xs:p-5 lg:p-10 flex grow justify-center"
dir="ltr">
{right}
<div
className={cn(
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8 changes: 6 additions & 2 deletions src/components/MDX/MDXComponents.tsx
Original file line number Diff line number Diff line change
Expand Up @@ -203,8 +203,12 @@ function LearnMore({

function ReadBlogPost({path}: {path: string}) {
return (
<ButtonLink className="mt-1" label="Read Post" href={path} type="primary">
Переглянути публікацію
<ButtonLink
className="mt-1"
label="Читати допис"
href={path}
type="primary">
Переглянути допис
<IconNavArrow displayDirection="end" className="inline ms-1" />
</ButtonLink>
);
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2 changes: 1 addition & 1 deletion src/components/MDX/Sandpack/template.ts
Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
export const template = {
'/src/index.js': {
hidden: true,
code: `import React, { StrictMode } from "react";
code: `import { StrictMode } from "react";
import { createRoot } from "react-dom/client";
import "./styles.css";

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1 change: 0 additions & 1 deletion src/components/PageHeading.tsx
Original file line number Diff line number Diff line change
Expand Up @@ -27,7 +27,6 @@ function PageHeading({
tags = [],
breadcrumbs,
}: PageHeadingProps) {
console.log('version', version);
return (
<div className="px-5 sm:px-12 pt-3.5">
<div className="max-w-4xl ms-0 2xl:mx-auto">
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9 changes: 8 additions & 1 deletion src/components/Seo.tsx
Original file line number Diff line number Diff line change
Expand Up @@ -124,7 +124,14 @@ export const Seo = withRouter(
)}
<link
rel="preload"
href="/fonts/Source-Code-Pro-Regular.woff2"
href="https://react.dev/fonts/Source-Code-Pro-Regular.woff2"
as="font"
type="font/woff2"
crossOrigin="anonymous"
/>
<link
rel="preload"
href="https://react.dev/fonts/Source-Code-Pro-Bold.woff2"
as="font"
type="font/woff2"
crossOrigin="anonymous"
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12 changes: 6 additions & 6 deletions src/content/blog/index.md
Original file line number Diff line number Diff line change
Expand Up @@ -4,9 +4,9 @@ title: Блог React

<Intro>

This blog is the official source for the updates from the React team. Anything important, including release notes or deprecation notices, will be posted here first.
Цей блог є офіційним джерелом оновлень від команди React. Все важливе, включно з нотатками релізу або повідомленнями про застарілі функції, буде опубліковано спершу тут.

You can also follow the [@react.dev](https://bsky.app/profile/react.dev) account on Bluesky, or [@reactjs](https://twitter.com/reactjs) account on Twitter, but you won’t miss anything essential if you only read this blog.
Ви також можете слідкувати за [@react.dev](https://bsky.app/profile/react.dev) на платформі Bluesky або за [@reactjs](https://twitter.com/reactjs) у Twitter, але ви не пропустите нічого суттєвого, якщо читатимете лише цей блог.

</Intro>

Expand Down Expand Up @@ -112,14 +112,14 @@ The React team is excited to share a few updates:

---

### All release notes {/*all-release-notes*/}
### Усі нотатки до релізів {/*all-release-notes*/}

Not every React release deserves its own blog post, but you can find a detailed changelog for every release in the [`CHANGELOG.md`](https://github.com/facebook/react/blob/main/CHANGELOG.md) file in the React repository, as well as on the [Releases](https://github.com/facebook/react/releases) page.
Не кожен реліз React заслуговує на окремий допис у блозі, проте ви можете знайти детальний список змін для кожного релізу у файлі [`CHANGELOG.md`](https://github.com/facebook/react/blob/main/CHANGELOG.md) у репозиторії React, а також на сторінці ["Релізи"](https://github.com/facebook/react/releases).

---

### Старіші публікації {/*older-posts*/}
### Старіші дописи {/*older-posts*/}

Перегляньте [старіші публікації.](https://reactjs.org/blog/all.html)
Перегляньте [старіші дописи.](https://reactjs.org/blog/all.html)

<div className="h-12"></div>
2 changes: 1 addition & 1 deletion src/content/community/index.md
Original file line number Diff line number Diff line change
Expand Up @@ -29,4 +29,4 @@ Each community consists of many thousands of React users.

## News {/*news*/}

For the latest news about React, [follow **@reactjs** on Twitter](https://twitter.com/reactjs) and the [official React blog](/blog/) on this website.
For the latest news about React, [follow **@reactjs** on Twitter](https://twitter.com/reactjs), [**@react.dev** on Bluesky](https://bsky.app/profile/react.dev) and the [official React blog](/blog/) on this website.
2 changes: 1 addition & 1 deletion src/content/community/meetups.md
Original file line number Diff line number Diff line change
Expand Up @@ -38,7 +38,7 @@ Do you have a local React.js meetup? Add it here! (Please keep the list alphabet

## Canada {/*canada*/}
* [Halifax, NS](https://www.meetup.com/Halifax-ReactJS-Meetup/)
* [Montreal, QC - React Native](https://www.meetup.com/fr-FR/React-Native-MTL/)
* [Montreal, QC](https://guild.host/react-montreal/)
* [Vancouver, BC](https://www.meetup.com/ReactJS-Vancouver-Meetup/)
* [Ottawa, ON](https://www.meetup.com/Ottawa-ReactJS-Meetup/)
* [Saskatoon, SK](https://www.meetup.com/saskatoon-react-meetup/)
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2 changes: 1 addition & 1 deletion src/content/community/versioning-policy.md
Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
---
title: Versioning Policy
title: Політика версіонування
---

<Intro>
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2 changes: 1 addition & 1 deletion src/content/learn/build-a-react-app-from-scratch.md
Original file line number Diff line number Diff line change
Expand Up @@ -116,7 +116,7 @@ Rsbuild відразу підтримує такі функції React, як ш
Розділення коду за маршрутом, інтегроване з бандлером й отриманням даних, може зменшити час початкового завантаження вашого застосунку та рендерингу найбільшого видимого вмісту застосунку ([малювання найбільшого вмісту, LCP](https://web.dev/articles/lcp)).

Для інструкцій з розділення коду перегляньте документацію вашого інструменту збирання:
- [Оптимізації збирання у Vite](https://v3.vitejs.dev/guide/features.html#build-optimizations)
- [Оптимізації збирання у Vite](https://vite.dev/guide/features.html#build-optimizations)
- [Розділення коду в Parcel](https://parceljs.org/features/code-splitting/)
- [Розділення коду в Rsbuild](https://rsbuild.dev/guide/optimization/code-splitting)

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4 changes: 2 additions & 2 deletions src/content/learn/preserving-and-resetting-state.md
Original file line number Diff line number Diff line change
Expand Up @@ -2011,7 +2011,7 @@ export default function ContactList() {
<label>
<input
type="checkbox"
value={reverse}
checked={reverse}
onChange={e => {
setReverse(e.target.checked)
}}
Expand Down Expand Up @@ -2110,7 +2110,7 @@ export default function ContactList() {
<label>
<input
type="checkbox"
value={reverse}
checked={reverse}
onChange={e => {
setReverse(e.target.checked)
}}
Expand Down
2 changes: 1 addition & 1 deletion src/content/learn/removing-effect-dependencies.md
Original file line number Diff line number Diff line change
Expand Up @@ -1241,7 +1241,7 @@ export default function Timer() {

</Sandpack>

Instead of reading `count` inside the Effect, you pass a `c => c + 1` instruction ("increment this number!") to React. React will apply it on the next render. And since you don't need to read the value of `count` inside your Effect anymore, so you can keep your Effect's dependencies empty (`[]`). This prevents your Effect from re-creating the interval on every tick.
Instead of reading `count` inside the Effect, you pass a `c => c + 1` instruction ("increment this number!") to React. React will apply it on the next render. And since you don't need to read the value of `count` inside your Effect anymore, you can keep your Effect's dependencies empty (`[]`). This prevents your Effect from re-creating the interval on every tick.

</Solution>

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3 changes: 1 addition & 2 deletions src/content/learn/reusing-logic-with-custom-hooks.md
Original file line number Diff line number Diff line change
Expand Up @@ -820,7 +820,7 @@ export default function ChatRoom({ roomId }) {
// ...
```

and pass it as an input to another Hook:
and passing it as an input to another Hook:

```js {6}
export default function ChatRoom({ roomId }) {
Expand Down Expand Up @@ -2081,7 +2081,6 @@ Write `useInterval` in the `useInterval.js` file and import it into the `useCoun
<Sandpack>

```js
import { useState } from 'react';
import { useCounter } from './useCounter.js';

export default function Counter() {
Expand Down
2 changes: 1 addition & 1 deletion src/content/learn/separating-events-from-effects.md
Original file line number Diff line number Diff line change
Expand Up @@ -439,7 +439,7 @@ function ChatRoom({ roomId, theme }) {
// ...
```

This solves the problem. Note that you had to *remove* `onConnected` from the list of your Effect's dependencies. **Effect Events are not reactive and must be omitted from dependencies.**
This solves the problem. Note that you had to *remove* `theme` from the list of your Effect's dependencies, because it's no longer used in the Effect. You also don't need to *add* `onConnected` to it, because **Effect Events are not reactive and must be omitted from dependencies.**

Verify that the new behavior works as you would expect:

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2 changes: 1 addition & 1 deletion src/content/reference/react-dom/preinit.md
Original file line number Diff line number Diff line change
Expand Up @@ -48,7 +48,7 @@ The `preinit` function provides the browser with a hint that it should start dow
* `options`: an object. It contains the following properties:
* `as`: a required string. The type of resource. Its possible values are `script` and `style`.
* `precedence`: a string. Required with stylesheets. Says where to insert the stylesheet relative to others. Stylesheets with higher precedence can override those with lower precedence. The possible values are `reset`, `low`, `medium`, `high`.
* `crossOrigin`: a string. The [CORS policy](https://developer.mozilla.org/en-US/docs/Web/HTML/Attributes/crossorigin) to use. Its possible values are `anonymous` and `use-credentials`. It is required when `as` is set to `"fetch"`.
* `crossOrigin`: a string. The [CORS policy](https://developer.mozilla.org/en-US/docs/Web/HTML/Attributes/crossorigin) to use. Its possible values are `anonymous` and `use-credentials`.
* `integrity`: a string. A cryptographic hash of the resource, to [verify its authenticity](https://developer.mozilla.org/en-US/docs/Web/Security/Subresource_Integrity).
* `nonce`: a string. A cryptographic [nonce to allow the resource](https://developer.mozilla.org/en-US/docs/Web/HTML/Global_attributes/nonce) when using a strict Content Security Policy.
* `fetchPriority`: a string. Suggests a relative priority for fetching the resource. The possible values are `auto` (the default), `high`, and `low`.
Expand Down
161 changes: 160 additions & 1 deletion src/content/reference/react/useTransition.md
Original file line number Diff line number Diff line change
Expand Up @@ -163,7 +163,7 @@ function CheckoutForm() {

The function passed to `startTransition` is called the "Action". You can update state and (optionally) perform side effects within an Action, and the work will be done in the background without blocking user interactions on the page. A Transition can include multiple Actions, and while a Transition is in progress, your UI stays responsive. For example, if the user clicks a tab but then changes their mind and clicks another tab, the second click will be immediately handled without waiting for the first update to finish.

To give the user feedback about in-progress Transitions, to `isPending` state switches to `true` at the first call to `startTransition`, and stays `true` until all Actions complete and the final state is shown to the user. Transitions ensure side effects in Actions to complete in order to [prevent unwanted loading indicators](#preventing-unwanted-loading-indicators), and you can provide immediate feedback while the Transition is in progress with `useOptimistic`.
To give the user feedback about in-progress Transitions, the `isPending` state switches to `true` at the first call to `startTransition`, and stays `true` until all Actions complete and the final state is shown to the user. Transitions ensure side effects in Actions to complete in order to [prevent unwanted loading indicators](#preventing-unwanted-loading-indicators), and you can provide immediate feedback while the Transition is in progress with `useOptimistic`.

<Recipes titleText="The difference between Actions and regular event handling">

Expand Down Expand Up @@ -1948,3 +1948,162 @@ When clicking multiple times, it's possible for previous requests to finish afte
This is expected, because Actions within a Transition do not guarantee execution order. For common use cases, React provides higher-level abstractions like [`useActionState`](/reference/react/useActionState) and [`<form>` actions](/reference/react-dom/components/form) that handle ordering for you. For advanced use cases, you'll need to implement your own queuing and abort logic to handle this.


Example of `useActionState` handling execution order:

<Sandpack>

```json package.json hidden
{
"dependencies": {
"react": "beta",
"react-dom": "beta"
},
"scripts": {
"start": "react-scripts start",
"build": "react-scripts build",
"test": "react-scripts test --env=jsdom",
"eject": "react-scripts eject"
}
}
```

```js src/App.js
import { useState, useActionState } from "react";
import { updateQuantity } from "./api";
import Item from "./Item";
import Total from "./Total";

export default function App({}) {
// Store the actual quantity in separate state to show the mismatch.
const [clientQuantity, setClientQuantity] = useState(1);
const [quantity, updateQuantityAction, isPending] = useActionState(
async (prevState, payload) => {
setClientQuantity(payload);
const savedQuantity = await updateQuantity(payload);
return savedQuantity; // Return the new quantity to update the state
},
1 // Initial quantity
);

return (
<div>
<h1>Checkout</h1>
<Item action={updateQuantityAction}/>
<hr />
<Total clientQuantity={clientQuantity} savedQuantity={quantity} isPending={isPending} />
</div>
);
}

```

```js src/Item.js
import {startTransition} from 'react';

export default function Item({action}) {
function handleChange(e) {
// Update the quantity in an Action.
startTransition(() => {
action(e.target.value);
});
}
return (
<div className="item">
<span>Eras Tour Tickets</span>
<label htmlFor="name">Quantity: </label>
<input
type="number"
onChange={handleChange}
defaultValue={1}
min={1}
/>
</div>
)
}
```

```js src/Total.js
const intl = new Intl.NumberFormat("en-US", {
style: "currency",
currency: "USD"
});

export default function Total({ clientQuantity, savedQuantity, isPending }) {
return (
<div className="total">
<span>Total:</span>
<div>
<div>
{isPending
? "🌀 Updating..."
: `${intl.format(savedQuantity * 9999)}`}
</div>
<div className="error">
{!isPending &&
clientQuantity !== savedQuantity &&
`Wrong total, expected: ${intl.format(clientQuantity * 9999)}`}
</div>
</div>
</div>
);
}
```

```js src/api.js
let firstRequest = true;
export async function updateQuantity(newName) {
return new Promise((resolve, reject) => {
if (firstRequest === true) {
firstRequest = false;
setTimeout(() => {
firstRequest = true;
resolve(newName);
// Simulate every other request being slower
}, 1000);
} else {
setTimeout(() => {
resolve(newName);
}, 50);
}
});
}
```

```css
.item {
display: flex;
align-items: center;
justify-content: start;
}

.item label {
flex: 1;
text-align: right;
}

.item input {
margin-left: 4px;
width: 60px;
padding: 4px;
}

.total {
height: 50px;
line-height: 25px;
display: flex;
align-content: center;
justify-content: space-between;
}

.total div {
display: flex;
flex-direction: column;
align-items: flex-end;
}

.error {
color: red;
}
```

</Sandpack>
2 changes: 1 addition & 1 deletion src/content/reference/rsc/server-functions.md
Original file line number Diff line number Diff line change
Expand Up @@ -28,7 +28,7 @@ To support Server Functions as a bundler or framework, we recommend pinning to a

</Note>

When a Server Functions is defined with the [`"use server"`](/reference/rsc/use-server) directive, your framework will automatically create a reference to the server function, and pass that reference to the Client Component. When that function is called on the client, React will send a request to the server to execute the function, and return the result.
When a Server Function is defined with the [`"use server"`](/reference/rsc/use-server) directive, your framework will automatically create a reference to the server function, and pass that reference to the Client Component. When that function is called on the client, React will send a request to the server to execute the function, and return the result.

Server Functions can be created in Server Components and passed as props to Client Components, or they can be imported and used in Client Components.

Expand Down
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