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migration-example
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import React from 'react'; | |
import ReactDOM from 'react-dom'; | |
import { BrowserRouter as Router, Route, Switch } from 'react-router-dom'; | |
import App from './App'; | |
import NewPage from './NewPage'; | |
import OldPage from './OldPage'; | |
import './index.css'; | |
ReactDOM.render( | |
<Router> | |
<Switch> | |
<Route path="/new" component={NewPage} /> | |
<Route path="/old" component={OldPage} /> | |
<Route path="/" component={App} /> | |
</Switch> | |
</Router>, | |
document.getElementById('root') | |
); |
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import React from 'react'; | |
const NewPage = () => { | |
return ( | |
<div> | |
<h1>New Page</h1> | |
<p>This is the new page.</p> | |
</div> | |
); | |
}; | |
export default NewPage; |
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import React, { useEffect } from 'react'; | |
const OldPage = () => { | |
useEffect(() => { | |
// Check if the other app is already initialized | |
if (!document.getElementById('other-app-root').hasChildNodes()) { | |
// Dynamically load and initialize the other React app | |
const script = document.createElement('script'); | |
script.src = '/other-app/main.js'; // Path to the built other React app's main script | |
script.onload = () => { | |
window.initializeOtherApp(); // Assuming the other app exposes this function to initialize itself | |
}; | |
document.body.appendChild(script); | |
} | |
}, []); | |
return ( | |
<div> | |
<h1>Old Page</h1> | |
<div id="other-app-root"></div> | |
</div> | |
); | |
}; | |
export default OldPage; |
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import React from 'react'; | |
import ReactDOM from 'react-dom'; | |
import './index.css'; | |
import App from './App'; | |
window.initializeOtherApp = () => { | |
ReactDOM.render( | |
<React.StrictMode> | |
<App /> | |
</React.StrictMode>, | |
document.getElementById('other-app-root') | |
); | |
}; |
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