Lahirutech/_document.tsx

## _document.tsx
import * as React from 'react';
import Document, { Html, Head, Main, NextScript } from 'next/document';
import createEmotionServer from '@emotion/server/create-instance';
import theme, { roboto } from '../theme';
import createEmotionCache from '../createEmotionCache';

export default class MyDocument extends Document {
  render() {
    return (
      <Html
        lang='en'
        className={roboto.className}
      >
        <Head>
          {/* PWA primary color */}
          <meta
            name='theme-color'
            content={theme.palette.primary.main}
          />
          <link
            rel='shortcut icon'
            href='/favicon.ico'
          />
          <meta
            name='emotion-insertion-point'
            content=''
          />
          {(this.props as any).emotionStyleTags}
        </Head>
        <body>
          <Main />
          <NextScript />
        </body>
      </Html>
    );
  }
}

// `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);

  ctx.renderPage = () =>
    originalRenderPage({
      enhanceApp: (App: any) =>
        function EnhanceApp(props) {
          return (
            <App
              emotionCache={cache}
              {...props}
            />
          );
        },
    });

  const initialProps = await Document.getInitialProps(ctx);
  // This is important. It prevents Emotion to render invalid HTML.
  // See https://github.com/mui/material-ui/issues/26561#issuecomment-855286153
  const emotionStyles = extractCriticalToChunks(initialProps.html);
  const emotionStyleTags = emotionStyles.styles.map((style) => (
    <style
      data-emotion={`${style.key} ${style.ids.join(' ')}`}
      key={style.key}
      // eslint-disable-next-line react/no-danger
      dangerouslySetInnerHTML={{ __html: style.css }}
    />
  ));

  return {
    ...initialProps,
    emotionStyleTags,
  };
};
	import * as React from 'react';
	import Document, { Html, Head, Main, NextScript } from 'next/document';
	import createEmotionServer from '@emotion/server/create-instance';
	import theme, { roboto } from '../theme';
	import createEmotionCache from '../createEmotionCache';

	export default class MyDocument extends Document {
	render() {
	return (
	<Html
	lang='en'
	className={roboto.className}
	>
	<Head>
	{/* PWA primary color */}
	<meta
	name='theme-color'
	content={theme.palette.primary.main}
	/>
	<link
	rel='shortcut icon'
	href='/favicon.ico'
	/>
	<meta
	name='emotion-insertion-point'
	content=''
	/>
	{(this.props as any).emotionStyleTags}
	</Head>
	<body>
	<Main />
	<NextScript />
	</body>
	</Html>
	);
	}
	}

	// `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);

	ctx.renderPage = () =>
	originalRenderPage({
	enhanceApp: (App: any) =>
	function EnhanceApp(props) {
	return (
	<App
	emotionCache={cache}
	{...props}
	/>
	);
	},
	});

	const initialProps = await Document.getInitialProps(ctx);
	// This is important. It prevents Emotion to render invalid HTML.
	// See https://github.com/mui/material-ui/issues/26561#issuecomment-855286153
	const emotionStyles = extractCriticalToChunks(initialProps.html);
	const emotionStyleTags = emotionStyles.styles.map((style) => (
	<style
	data-emotion={`${style.key} ${style.ids.join(' ')}`}
	key={style.key}
	// eslint-disable-next-line react/no-danger
	dangerouslySetInnerHTML={{ __html: style.css }}
	/>
	));

	return {
	...initialProps,
	emotionStyleTags,
	};
	};