Сделали несколько кастомных хуков

package-lock.json

@@ -8,9 +8,9 @@
       "name": "store-client",
       "version": "0.0.0",
       "dependencies": {
+        "@tanstack/react-query": "^5.100.14",
         "react": "^19.1.0",
-        "react-dom": "^19.1.0",
-        "react-intl": "^10.1.13"
+        "react-dom": "^19.1.0"
       },
       "devDependencies": {
         "@eslint/js": "^9.25.0",
@@ -899,38 +899,6 @@
         "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",
@@ -1337,6 +1305,32 @@
         "win32"
       ]
     },
+    "node_modules/@tanstack/query-core": {
+      "version": "5.100.14",
+      "resolved": "https://registry.npmjs.org/@tanstack/query-core/-/query-core-5.100.14.tgz",
+      "integrity": "sha512-5X41dGpxgeaHISCRW2oYwcSycZeULZzAunaudXT9ov1KOTj9xwt0CH6hbwqP1/z74ZWF7rYFnDpyYH07XFcZew==",
+      "license": "MIT",
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/tannerlinsley"
+      }
+    },
+    "node_modules/@tanstack/react-query": {
+      "version": "5.100.14",
+      "resolved": "https://registry.npmjs.org/@tanstack/react-query/-/react-query-5.100.14.tgz",
+      "integrity": "sha512-oOr6aRdSFEwWhzxEkD/9ZcItM3+LjBSkeVmadWKwUssAHTsqd/7bOjWrX4AbvEkoEhgAxzN0Xk6H/aYzXiYBAw==",
+      "license": "MIT",
+      "dependencies": {
+        "@tanstack/query-core": "5.100.14"
+      },
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/tannerlinsley"
+      },
+      "peerDependencies": {
+        "react": "^18 || ^19"
+      }
+    },
     "node_modules/@types/babel__core": {
       "version": "7.20.5",
       "resolved": "https://registry.npmjs.org/@types/babel__core/-/babel__core-7.20.5.tgz",
@@ -1400,6 +1394,7 @@
       "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"
@@ -1651,6 +1646,7 @@
       "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": {
@@ -2112,16 +2108,6 @@
         "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",
@@ -2502,21 +2488,6 @@
         "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

@@ -10,9 +10,9 @@
     "preview": "vite preview"
   },
   "dependencies": {
+    "@tanstack/react-query": "^5.100.14",
     "react": "^19.1.0",
-    "react-dom": "^19.1.0",
-    "react-intl": "^10.1.13"
+    "react-dom": "^19.1.0"
   },
   "devDependencies": {
     "@eslint/js": "^9.25.0",

src/App.jsx

@@ -1,30 +1,93 @@
-import { IntlProvider,
-        FormattedMessage,
-        FormattedNumber,
-        FormattedDate,
-        FormattedTime,
-        FormattedDateTimeRange } from 'react-intl'
-import messageRu from './translations/ru.json'
-import messageEn from './translations/en.json'
+import React, {useState, useEffect, useRef } from 'react'
+//import { useQuery } from '@tanstack/react-query'
+
+function useWindowWidth() {
+    const [width,setWidth] = useState(window.innerWidth)
+    
+    useEffect(() => {
+        const handleResize = () => setWidth(window.innerWidth);
+        window.addEventListener('resize',handleResize);
+        return () => window.removeEventListener('resize',handleResize);
+    },[])
+    
+    return width
+}
+
+function useLocalStorage(key, initValue) {
+    const [value, setValue] = useState(()=>{
+        const stored = localStorage.getItem(key);
+        return stored !== null ? JSON.parse(stored) : initValue
+    })
+    
+    useEffect(() => {
+        localStorage.setItem(key, JSON.stringify(value))
+    },[key, value])
+    
+    return [value,setValue]
+}
+/*
+function useUserData(userId) {
+    return useQuery(
+        ['user',userId],
+        () => fetch(`/api/user/${userId}`).then(res => res.json()),
+        {refetchOnWindowFocus: false}
+    )
+}*/
+
+function useInput(initValue, validate) {
+    const [value, setValue] = useState(initValue);
+    const [error, setError] = useState(null);
+    
+    const onChange = e => {
+        const newValue = e.target.value
+        setValue(newValue)
+        if (validate) {
+            const validationResult = validate(newValue)
+            setError(validationResult)
+        }
+    }
+    
+    return { value, error, onChange }
+}
+
+function useInterval(callback, delay) {
+    const savedCallback = useRef()
+    
+    useEffect(()=>{
+        savedCallback.current = callback
+    },[callback]);
+    
+    useEffect(()=>{
+        if (delay == null) return
+        const id = setInterval(()=>{
+            savedCallback.current()
+        },delay);
+        return () => clearInterval(id);
+    },[delay])
+}
 
 function App() {
-    const locale = 'ru';
-    const messages = messageEn;
+    const width = useWindowWidth();
+    const [theme, setTheme] = useLocalStorage('theme','light');
+    
+    const username = useInput(
+        '',
+        value => value.length < 3 ? 'минимум 3 символа' : null
+    )
     
 	return (
 		<>
-            <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>
+			<h1>Hello, React!{width}</h1>
+            <button onClick={()=>{
+                setTheme(theme === 'light' ? 'dark' : 'light')
+            }}>
+                Сменить тему
+            </button>
+            <p><input type="text" 
+                value={username.value} 
+                onChange={username.onChange} />
+                { username.error ? username.error : '' }
+            </p>
 		</>
 	)
 }

src/translations/en.json

@@ -1,6 +0,0 @@
-{
-    "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

@@ -1,6 +0,0 @@
-{
-    "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}"
-}