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material-ui/examples/nextjs/pages/_document.js /
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| import React from 'react'; | |
| import Document, { Head, Main, NextScript } from 'next/document'; | |
| import { ServerStyleSheets } from '@material-ui/core/styles'; | |
| import theme from '../src/theme'; | |
| export default class MyDocument extends Document { | |
| render() { | |
| return ( | |
| <html lang="en"> | |
| <Head> | |
| {/* PWA primary color */} | |
| <meta name="theme-color" content={theme.palette.primary.main} /> | |
| <link | |
| rel="stylesheet" | |
| href="https://fonts.googleapis.com/css?family=Roboto:300,400,500,700&display=swap" | |
| /> | |
| </Head> | |
| <body> | |
| <Main /> | |
| <NextScript /> | |
| </body> | |
| </html> | |
| ); | |
| } | |
| } | |
| 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 | |
| // Render app and page and get the context of the page with collected side effects. | |
| const sheets = new ServerStyleSheets(); | |
| const originalRenderPage = ctx.renderPage; | |
| ctx.renderPage = () => | |
| originalRenderPage({ | |
| enhanceApp: (App) => (props) => sheets.collect(<App {...props} />), | |
| }); | |
| const initialProps = await Document.getInitialProps(ctx); | |
| return { | |
| ...initialProps, | |
| // Styles fragment is rendered after the app and page rendering finish. | |
| styles: [...React.Children.toArray(initialProps.styles), sheets.getStyleElement()], | |
| }; | |
| }; |