add i18n

package-lock.json

@@ -9,7 +9,8 @@
       "version": "0.0.0",
       "dependencies": {
         "react": "^19.1.0",
-        "react-dom": "^19.1.0"
+        "react-dom": "^19.1.0",
+        "react-intl": "^10.1.13"
       },
       "devDependencies": {
         "@eslint/js": "^9.25.0",
@@ -898,6 +899,38 @@
         "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
       }
     },
+    "node_modules/@formatjs/fast-memoize": {
+      "version": "3.1.6",
+      "resolved": "https://registry.npmjs.org/@formatjs/fast-memoize/-/fast-memoize-3.1.6.tgz",
+      "integrity": "sha512-H5aexk1Le7T9TPmscacZ+1pR6CTa2n1wq+HDVGXhH8TzUlQQpeXzZs91dRtmFHrbeNbjPFPfQujUqm7MHgVoXQ==",
+      "license": "MIT"
+    },
+    "node_modules/@formatjs/icu-messageformat-parser": {
+      "version": "3.5.11",
+      "resolved": "https://registry.npmjs.org/@formatjs/icu-messageformat-parser/-/icu-messageformat-parser-3.5.11.tgz",
+      "integrity": "sha512-NVsuNsc2dUVG9+4HBJ/srScxtA/18LqGgwtop/tuN/OIBjVl6QA+0KhfZQddDD9sEh2LeVjLFPGVU3ixa3blcA==",
+      "license": "MIT",
+      "dependencies": {
+        "@formatjs/icu-skeleton-parser": "2.1.10"
+      }
+    },
+    "node_modules/@formatjs/icu-skeleton-parser": {
+      "version": "2.1.10",
+      "resolved": "https://registry.npmjs.org/@formatjs/icu-skeleton-parser/-/icu-skeleton-parser-2.1.10.tgz",
+      "integrity": "sha512-XuSva+8ZGawk8VnD5VD6UeH8KarQ/Z022zgjHDoHmlNiAewstXuuzXc0Hk5pGFSdG+nNw5bfJKXqj1ZXHn9yUA==",
+      "license": "MIT"
+    },
+    "node_modules/@formatjs/intl": {
+      "version": "4.1.13",
+      "resolved": "https://registry.npmjs.org/@formatjs/intl/-/intl-4.1.13.tgz",
+      "integrity": "sha512-dufOl09iREq8V+laVdlGuyoqNmuzqDvyeA3O3k+0XQfvKJgK8bBWFKqYYWejFMKeOij/4LuPKJA+LsshpXQ4sw==",
+      "license": "MIT",
+      "dependencies": {
+        "@formatjs/fast-memoize": "3.1.6",
+        "@formatjs/icu-messageformat-parser": "3.5.11",
+        "intl-messageformat": "11.2.8"
+      }
+    },
     "node_modules/@humanfs/core": {
       "version": "0.19.1",
       "resolved": "https://registry.npmjs.org/@humanfs/core/-/core-0.19.1.tgz",
@@ -1367,7 +1400,6 @@
       "version": "19.1.6",
       "resolved": "https://registry.npmjs.org/@types/react/-/react-19.1.6.tgz",
       "integrity": "sha512-JeG0rEWak0N6Itr6QUx+X60uQmN+5t3j9r/OVDtWzFXKaj6kD1BwJzOksD0FF6iWxZlbE1kB0q9vtnU2ekqa1Q==",
-      "dev": true,
       "license": "MIT",
       "dependencies": {
         "csstype": "^3.0.2"
@@ -1619,7 +1651,6 @@
       "version": "3.1.3",
       "resolved": "https://registry.npmjs.org/csstype/-/csstype-3.1.3.tgz",
       "integrity": "sha512-M1uQkMl8rQK/szD0LNhtqxIPLpimGm8sOBwU7lLnCpSbTyY3yeU1Vc7l4KT5zT4s/yOxHH5O7tIuuLOCnLADRw==",
-      "dev": true,
       "license": "MIT"
     },
     "node_modules/debug": {
@@ -2081,6 +2112,16 @@
         "node": ">=0.8.19"
       }
     },
+    "node_modules/intl-messageformat": {
+      "version": "11.2.8",
+      "resolved": "https://registry.npmjs.org/intl-messageformat/-/intl-messageformat-11.2.8.tgz",
+      "integrity": "sha512-l323RCl3qJDVQ8U9j74ut/hVMdg3VPsOHpVMDvFfz9qiq4dPO5ooVYFNVUzzrpgG39a+RLzcXyJb8VFgIU+tUA==",
+      "license": "BSD-3-Clause",
+      "dependencies": {
+        "@formatjs/fast-memoize": "3.1.6",
+        "@formatjs/icu-messageformat-parser": "3.5.11"
+      }
+    },
     "node_modules/is-extglob": {
       "version": "2.1.1",
       "resolved": "https://registry.npmjs.org/is-extglob/-/is-extglob-2.1.1.tgz",
@@ -2461,6 +2502,21 @@
         "react": "^19.1.0"
       }
     },
+    "node_modules/react-intl": {
+      "version": "10.1.13",
+      "resolved": "https://registry.npmjs.org/react-intl/-/react-intl-10.1.13.tgz",
+      "integrity": "sha512-3aKnIOIPN6CWsu3jqPpYMlJZ2U0Qnxhd42xGWQNdGIknK/gBudWOHSIx9vN4XKkITokJLr7YTgs4yLUGtbvP9g==",
+      "license": "BSD-3-Clause",
+      "dependencies": {
+        "@formatjs/icu-messageformat-parser": "3.5.11",
+        "@formatjs/intl": "4.1.13",
+        "intl-messageformat": "11.2.8"
+      },
+      "peerDependencies": {
+        "@types/react": "19",
+        "react": "19"
+      }
+    },
     "node_modules/react-refresh": {
       "version": "0.17.0",
       "resolved": "https://registry.npmjs.org/react-refresh/-/react-refresh-0.17.0.tgz",

package.json

@@ -4,14 +4,15 @@
   "version": "0.0.0",
   "type": "module",
   "scripts": {
-    "dev": "vite", 
+    "dev": "vite",
     "build": "vite build",
     "lint": "eslint .",
     "preview": "vite preview"
   },
   "dependencies": {
     "react": "^19.1.0",
-    "react-dom": "^19.1.0"
+    "react-dom": "^19.1.0",
+    "react-intl": "^10.1.13"
   },
   "devDependencies": {
     "@eslint/js": "^9.25.0",

src/App.jsx

@@ -1,96 +1,30 @@
-import React from 'react'
-import styles from './App.module.scss'
-
-class Clock extends React.Component {
-    constructor(props) {
-        super(props);
-        this.state = { date: new Date() };
-    }
-    componentDidMount() {
-        this.timerId = setInterval( () => this.tick(), 1000);
-    }
-    componentWillUnmount() {
-        clearInterval(this.timerId)
-    }
-    tick() {
-        this.setState({ date: new Date() })
-    }
-    render() {
-        return <div>{this.state.date.toLocaleTimeString()}</div>
-    }
-}
-
-function Clock2() {
-    const [date, setDate] = React.useState(new Date());
-    
-    React.useEffect(()=>{
-        const timerId = setInterval(()=> setDate(new Date()),1000);
-        return () => clearInterval(timerId);
-    },[])
-    
-    return <div>{date.toLocaleTimeString()}</div>
-}
-
-function MouseTracker() {
-    const [x,setX] = React.useState(0);
-    const [y,setY] = React.useState(0);
-    
-    const mouseMoveHandler = event => {
-        setX(event.clientX);
-        setY(event.clientY);
-    }
-    
-    React.useEffect(()=>{
-        document.addEventListener('mousemove', mouseMoveHandler);
-        return () => {
-            document.removeEventListener('mousemove',mouseMoveHandler);
-        }
-    },[]);
-    
-    return <div className={styles.container}>
-        <p>Координаты мыши:<br /> X:<b>{x}</b>, Y:<b>{y}</b></p>
-        </div>
-}
-
-function DataFetcher() {
-    const [posts,setPosts] = React.useState([]);
-    const [users,setUsers] = React.useState([]);
-    
-    const getPosts = async () => {
-        const response = await fetch('https://jsonplaceholder.typicode.com/posts');
-        const data = await response.json();
-        setUsers(data.reduce((acc, value) => {
-            if (!(value.userId in acc))
-                return [...acc,value.userId]
-            return acc
-        }))
-        console.log(users);
-        setPosts(data.slice(1,10));
-        
-    }
-    
-    React.useEffect(() => {
-        console.log("Компонент создан");
-        getPosts();
-        return () => {console.log("Компонент удален");setPosts([])};
-    },[])
-    
-    return <div><ol>{posts.map(post => <li id={post.id}>{post.title}</li>)}</ol></div>
-}
+import { IntlProvider,
+        FormattedMessage,
+        FormattedNumber,
+        FormattedDate,
+        FormattedTime,
+        FormattedDateTimeRange } from 'react-intl'
+import messageRu from './translations/ru.json'
+import messageEn from './translations/en.json'
 
 function App() {
-    const [tracker,setTracker] = React.useState(false);
-    const [dataFetcher,setDataFetcher] = React.useState(false);
+    const locale = 'ru';
+    const messages = messageEn;
     
 	return (
 		<>
-			<h1>Hello, React!</h1>
-            <Clock />
-            <Clock2 />
-            <button onClick={() => setTracker(!tracker)}>Показать/Скрыть трекер</button>
-            { tracker && <MouseTracker /> }
-            <button onClick={() => setDataFetcher(!dataFetcher)}>Показать/Скрыть посты</button>
-            { dataFetcher && <DataFetcher /> }
+            <IntlProvider locale={locale} messages={messages}>
+			    <h1><FormattedMessage id='app.welcome' /></h1>
+                <h2><FormattedMessage id='app.userGreeting' values={{ name: <u>Alex</u> }} /></h2>
+                <p><FormattedMessage id='app.notifications' values= {{count: 25}} /></p>
+                <p><FormattedMessage id='app.lastLogin' values={{ date: new Date(), time: new Date()}} /></p>
+                <p><FormattedNumber value={ 999.99 } style='currency' currency='RUB' /></p>
+                <p><FormattedNumber value={0.56} style='percent' /></p>
+                <p><FormattedNumber value={1234.567} minimumFractionDigits={2} maximumFractionDigits={2} /></p>
+                <p><FormattedDate value={new Date()} weekday='long' /></p>
+                <p><FormattedTime value={new Date()} hour='2-digit' minute='2-digit' second='2-digit' /></p>
+                <p><FormattedDateTimeRange from={new Date(2026,6,1,10,0)} to={new Date(2026,6,10,9,0)} /></p>
+            </IntlProvider>
 		</>
 	)
 }

src/App.module.scss

@@ -1,11 +0,0 @@
-.container {
-    width: 300px;
-    height: 200px;
-    border: 2px dashed grey;
-    margin: 10px;
-    text-align: center;
-    p {
-        margin-top: 20%;
-    }
-}
-

src/translations/en.json

@@ -0,0 +1,6 @@
+{
+    "app.welcome": "welcome to React application",
+    "app.userGreeting": "Hello, {name}",
+    "app.notifications": "You have {count, plural, one {# a notification} few {# are notifications} many {# уведомлений} other {# уведомления}}",
+    "app.lastLogin": "Last login was {date,date,long} in {time,time,short}"
+}

src/translations/ru.json

@@ -0,0 +1,6 @@
+{
+    "app.welcome": "добро пожаловать в приложение React",
+    "app.userGreeting": "Здравствуйте, {name}",
+    "app.notifications": "У вас {count, plural, one {# уведомление} few {# уведомления} many {# уведомлений} other {# уведомления}}",
+    "app.lastLogin": "Последний вход был {date,date,long} в {time,time,short}"
+}