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Commit 1ac8dd5

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practice set added
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‎practice/online-status/.gitignore

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# Logs
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logs
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*.log
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npm-debug.log*
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yarn-debug.log*
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yarn-error.log*
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pnpm-debug.log*
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lerna-debug.log*
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node_modules
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dist
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dist-ssr
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*.local
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# Editor directories and files
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.vscode/*
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!.vscode/extensions.json
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.idea
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.DS_Store
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*.suo
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*.ntvs*
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*.njsproj
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*.sln
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*.sw?

‎practice/online-status/index.html

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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8" />
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<link rel="icon" type="image/svg+xml" href="/vite.svg" />
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<meta name="viewport" content="width=device-width, initial-scale=1.0" />
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<title>Vite + React</title>
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</head>
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<body>
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<div id="root"></div>
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<script type="module" src="/src/main.jsx"></script>
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</body>
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</html>

‎practice/online-status/package.json

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{
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"name": "online-status",
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"private": true,
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"version": "0.0.0",
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"type": "module",
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"scripts": {
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"dev": "vite",
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"build": "vite build",
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"preview": "vite preview"
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},
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"dependencies": {
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"react": "^18.2.0",
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"react-dom": "^18.2.0"
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},
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"devDependencies": {
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"@types/react": "^18.0.26",
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"@types/react-dom": "^18.0.9",
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"@vitejs/plugin-react": "^3.0.0",
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"vite": "^4.0.0"
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}
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}

‎practice/online-status/public/vite.svg

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Loading[フレーム]

‎practice/online-status/src/App.css

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.App{
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width: auto;
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height: auto;
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display: flex;
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flex-wrap: wrap;
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}
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.online{
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width: 60px;
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height: 60px;
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background-color: gray;
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cursor: pointer;
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margin: 6px;
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border-radius: 6px;
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}

‎practice/online-status/src/App.jsx

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import React from "react";
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import "./App.css"
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import data from "./data.json"
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import Online from "./Online";
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export default function App() {
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const [user, setUser] = React.useState(data)
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function toggle(id) {
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setUser((prevuser) => {
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return(
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prevuser.map((userdata) => {
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return userdata.id === id ? {...userdata, status: !userdata.status} : userdata
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})
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)
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})
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}
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const onlinedataitem = user.map((onlinedata) => {
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return(
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<Online
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id={onlinedata.id}
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status={onlinedata.status}
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key={onlinedata.id}
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toggle={toggle(onlinedata.id)}
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/>
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)
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})
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return(
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<div className="App">
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{onlinedataitem}
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</div>
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)
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}

‎practice/online-status/src/Online.jsx

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import React from "react";
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export default function Online(props) {
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const bgcolor = {
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backgroundColor: props.status ? "orange" : "gray"
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}
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return(
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<div className="online" style={bgcolor} onClick={() => props.toggle}>
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</div>
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)
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}

‎practice/online-status/src/data.json

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[
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{
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"id": 11,
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"status": true
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},
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{
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"id": 22,
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"status": false
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},
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{
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"id": 33,
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"status": false
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},
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{
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"id": 44,
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"status": true
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},
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{
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"id": 55,
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"status": true
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},
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{
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"id": 66,
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"status": false
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},
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{
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"id": 77,
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"status": false
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},
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{
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"id": 88,
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"status": true
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}
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]

‎practice/online-status/src/index.css

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:root {
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font-family: Inter, Avenir, Helvetica, Arial, sans-serif;
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font-size: 16px;
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line-height: 24px;
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font-weight: 400;
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color-scheme: light dark;
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color: rgba(255, 255, 255, 0.87);
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background-color: #242424;
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font-synthesis: none;
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text-rendering: optimizeLegibility;
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-webkit-font-smoothing: antialiased;
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-moz-osx-font-smoothing: grayscale;
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-webkit-text-size-adjust: 100%;
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}
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a {
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font-weight: 500;
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color: #646cff;
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text-decoration: inherit;
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}
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a:hover {
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color: #535bf2;
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}
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body {
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margin: 0;
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display: flex;
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place-items: center;
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min-width: 320px;
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min-height: 100vh;
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}
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h1 {
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font-size: 3.2em;
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line-height: 1.1;
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}
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button {
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border-radius: 8px;
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border: 1px solid transparent;
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padding: 0.6em 1.2em;
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font-size: 1em;
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font-weight: 500;
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font-family: inherit;
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background-color: #1a1a1a;
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cursor: pointer;
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transition: border-color 0.25s;
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}
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button:hover {
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border-color: #646cff;
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}
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button:focus,
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button:focus-visible {
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outline: 4px auto -webkit-focus-ring-color;
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}
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@media (prefers-color-scheme: light) {
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:root {
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color: #213547;
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background-color: #ffffff;
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}
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a:hover {
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color: #747bff;
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}
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button {
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background-color: #f9f9f9;
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}
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}

‎practice/online-status/src/main.jsx

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import React from 'react'
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import ReactDOM from 'react-dom/client'
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import App from './App'
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import './index.css'
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ReactDOM.createRoot(document.getElementById('root')).render(
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<React.StrictMode>
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<App />
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</React.StrictMode>,
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)

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