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material-ui/pages/_document.js /
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| import React from 'react'; | |
| import Document, { Head, Main, NextScript } from 'next/document'; | |
| import getPageContext from 'docs/src/modules/styles/getPageContext'; | |
| import config from 'docs/src/config'; | |
| // You can find a benchmark of the available CSS minifiers under | |
| // https://github.com/GoalSmashers/css-minification-benchmark | |
| // We have found that clean-css is faster than cssnano but the output is larger. | |
| // Waiting for https://github.com/cssinjs/jss/issues/279 | |
| // 4% slower but 12% smaller output than doing it in a single step. | |
| // | |
| // It's using .browserslistrc | |
| let prefixer; | |
| let cleanCSS; | |
| if (process.env.NODE_ENV === 'production') { | |
| const postcss = require('postcss'); | |
| const autoprefixer = require('autoprefixer'); | |
| const CleanCSS = require('clean-css'); | |
| prefixer = postcss([autoprefixer]); | |
| cleanCSS = new CleanCSS(); | |
| } | |
| class MyDocument extends Document { | |
| render() { | |
| const { canonical, pageContext } = this.props; | |
| return ( | |
| <html lang="en" dir="ltr"> | |
| <Head> | |
| {/* Use minimum-scale=1 to enable GPU rasterization */} | |
| <meta | |
| name="viewport" | |
| content={ | |
| 'user-scalable=0, initial-scale=1, ' + | |
| 'minimum-scale=1, width=device-width, height=device-height' | |
| } | |
| /> | |
| {/* | |
| manifest.json provides metadata used when your web app is added to the | |
| homescreen on Android. See https://developers.google.com/web/fundamentals/engage-and-retain/web-app-manifest/ | |
| */} | |
| <link rel="manifest" href="/static/manifest.json" /> | |
| {/* PWA primary color */} | |
| <meta name="theme-color" content={pageContext.theme.palette.primary.main} /> | |
| <link rel="shortcut icon" href="/static/favicon.ico" /> | |
| <link rel="canonical" href={canonical} /> | |
| <link | |
| rel="stylesheet" | |
| href="https://fonts.googleapis.com/css?family=Roboto:300,400,500" | |
| /> | |
| {/* | |
| Preconnect allows the browser to setup early connections before an HTTP request | |
| is actually sent to the server. | |
| This includes DNS lookups, TLS negotiations, TCP handshakes. | |
| */} | |
| <link href="https://fonts.gstatic.com" rel="preconnect" crossOrigin="anonymous" /> | |
| <style id="insertion-point-jss" /> | |
| </Head> | |
| <body> | |
| <Main /> | |
| {/* Global Site Tag (gtag.js) - Google Analytics */} | |
| <script async src={`https://www.googletagmanager.com/gtag/js?id=${config.google.id}`} /> | |
| <script | |
| // eslint-disable-next-line react/no-danger | |
| dangerouslySetInnerHTML={{ | |
| __html: ` | |
| window.dataLayer = window.dataLayer || [];function gtag(){dataLayer.push(arguments)}; | |
| gtag('js', new Date()); | |
| `, | |
| }} | |
| /> | |
| <NextScript /> | |
| <script async src="https://cdn.jsdelivr.net/docsearch.js/2/docsearch.min.js" /> | |
| </body> | |
| </html> | |
| ); | |
| } | |
| } | |
| MyDocument.getInitialProps = async ctx => { | |
| // Resolution order | |
| // | |
| // On the server: | |
| // 1. page.getInitialProps | |
| // 2. document.getInitialProps | |
| // 3. page.render | |
| // 4. document.render | |
| // | |
| // On the server with error: | |
| // 2. document.getInitialProps | |
| // 3. page.render | |
| // 4. document.render | |
| // | |
| // On the client | |
| // 1. page.getInitialProps | |
| // 3. page.render | |
| // Get the context of the page to collected side effects. | |
| const pageContext = getPageContext(); | |
| const page = ctx.renderPage(Component => props => ( | |
| <Component pageContext={pageContext} {...props} /> | |
| )); | |
| let css = pageContext.sheetsRegistry.toString(); | |
| if (process.env.NODE_ENV === 'production') { | |
| const result1 = await prefixer.process(css, { from: undefined }); | |
| css = result1.css; | |
| css = cleanCSS.minify(css).styles; | |
| } | |
| return { | |
| ...page, | |
| pageContext, | |
| canonical: `https://material-ui.com${ctx.req.url.replace(/\/$/, '')}/`, | |
| styles: ( | |
| <style | |
| id="jss-server-side" | |
| // eslint-disable-next-line react/no-danger | |
| dangerouslySetInnerHTML={{ __html: css }} | |
| /> | |
| ), | |
| }; | |
| }; | |
| export default MyDocument; |