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  material-ui/pages/_document.js
  
    
    
 
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        100644
        
          126 lines (117 sloc)
          
        4.07 KB
      
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                  import React from 'react';
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                  import Document, { Head, Main, NextScript } from 'next/document';
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                  import getPageContext from 'docs/src/modules/styles/getPageContext';
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                  // You can find a benchmark of the available CSS minifiers under
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                  // https://github.com/GoalSmashers/css-minification-benchmark
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                  // We have found that clean-css is faster than cssnano but the output is larger.
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                  // Waiting for https://github.com/cssinjs/jss/issues/279
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                  // 4% slower but 12% smaller output than doing it in a single step.
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                  let prefixer;
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                  let cleanCSS;
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                  if (process.env.NODE_ENV === 'production') {
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                    const postcss = require('postcss');
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                    const autoprefixer = require('autoprefixer');
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                    const CleanCSS = require('clean-css');
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                    prefixer = postcss([autoprefixer]);
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                    cleanCSS = new CleanCSS();
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                  }
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                      return (
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                        <html lang="en" dir="ltr">
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                          <Head>
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                            {/* Use minimum-scale=1 to enable GPU rasterization */}
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                            <meta
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                              name="viewport"
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                              content={
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                                'user-scalable=0, initial-scale=1, ' +
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                                'minimum-scale=1, width=device-width, height=device-height'
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                              }
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                            />
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                            {/*
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                              manifest.json provides metadata used when your web app is added to the
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                              homescreen on Android. See https://developers.google.com/web/fundamentals/engage-and-retain/web-app-manifest/
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                            */}
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                            <link rel="manifest" href="/static/manifest.json" />
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                            {/* PWA primary color */}
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                            <meta name="theme-color" content={pageContext.theme.palette.primary.main} />
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                            <link rel="shortcut icon" href="/static/favicon.ico" />
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                            <link rel="canonical" href={canonical} />
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                            <link
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                              rel="stylesheet"
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                              href="https://fonts.googleapis.com/css?family=Roboto:300,400,500"
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                            />
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                            {/*
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                              Preconnect allows the browser to setup early connections before an HTTP request
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                              is actually sent to the server.
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                              This includes DNS lookups, TLS negotiations, TCP handshakes.
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                            */}
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                            <link href="https://fonts.gstatic.com" rel="preconnect" crossOrigin="anonymous" />
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                            <style id="insertion-point-jss" />
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                            {/* Global Site Tag (gtag.js) - Google Analytics */}
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                            <script async src="https://www.google-analytics.com/analytics.js" />
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                            <script
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                              // eslint-disable-next-line react/no-danger
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                              dangerouslySetInnerHTML={{
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                                __html: `
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                  window.ga=window.ga||function(){(ga.q=ga.q||[]).push(arguments)};ga.l=+new Date;
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                  ga('create', '${config.google.id}', 'material-ui.com');
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                            <script async src="https://cdn.jsdelivr.net/docsearch.js/2/docsearch.min.js" />
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                  MyDocument.getInitialProps = async ctx => {
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                    // Resolution order
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                    //
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                    // On the server:
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                    // 1. page.getInitialProps
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                    // 2. document.getInitialProps
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                    // 3. page.render
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                    // 4. document.render
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                    //
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                    // On the server with error:
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                    // 2. document.getInitialProps
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                    // 3. page.render
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                    // 4. document.render
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                    //
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                    // On the client
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                    // 1. page.getInitialProps
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                    // 3. page.render
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                    // Get the context of the page to collected side effects.
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                    const pageContext = getPageContext();
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                    const page = ctx.renderPage(Component => props => (
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                    if (process.env.NODE_ENV === 'production') {
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                      const result1 = await prefixer.process(css, { from: undefined });
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                      canonical: `https://material-ui.com${ctx.req.url.replace(/\/$/, '')}/`,
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                      styles: (
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                        <style
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                          id="jss-server-side"
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                          // eslint-disable-next-line react/no-danger
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                          dangerouslySetInnerHTML={{ __html: css }}
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                        />
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                      ),
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                    };
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                  };
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                  export default MyDocument;