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The default style library used for generating CSS styles for MUI components is emotion.
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Material UI
Ready-to-use foundational React components, free forever. It includes Material UI, which implements Google's Material Design.
import * as React from 'react'; import Document, { Html, Head, Main, NextScript } from 'next/document'; import createEmotionServer from '@emotion/server/create-instance'; import createEmotionCache from '../utility/createEmotionCache'; export default class MyDocument extends Document { render() { return ( ); } } // `getInitialProps` belongs to `_document` (instead of `_app`), // it's compatible with static-site generation (SSG). MyDocument.getInitialProps = async (ctx) => { // Resolution order // // On the server: // 1. app.getInitialProps // 2. page.getInitialProps // 3. document.getInitialProps // 4. app.render // 5. page.render // 6. document.render // // On the server with error: // 1. document.getInitialProps // 2. app.render // 3. page.render // 4. document.render // // On the client // 1. app.getInitialProps // 2. page.getInitialProps // 3. app.render // 4. page.render const originalRenderPage = ctx.renderPage; // You can consider sharing the same emotion cache between all the SSR requests to speed up performance. // However, be aware that it can have global side effects. const cache = createEmotionCache(); const { extractCriticalToChunks } = createEmotionServer(cache); /* eslint-disable */ ctx.renderPage = () => originalRenderPage({ enhanceApp: (App) => function EnhanceApp(props) { return ; }, }); /* eslint-enable */ const initialProps = await Document.getInitialProps(ctx); // This is important. It prevents emotion to render invalid HTML. // See https://github.com/mui-org/material-ui/issues/26561#issuecomment-855286153 const emotionStyles = extractCriticalToChunks(initialProps.html); const emotionStyleTags = emotionStyles.styles.map((style) => ( )); return { ...initialProps, // Styles fragment is rendered after the app and page rendering finish. styles: [ ...React.Children.toArray(initialProps.styles), ...emotionStyleTags, ], }; };
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SurveyJS
Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.
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to discover more about Next.js click here.
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