| | import React from 'react'; |
| | import type { DocumentContext } from 'next/document'; |
| | import Document, { Html, Head, Main, NextScript } from 'next/document'; |
| | import createEmotionServer from '@emotion/server/create-instance'; |
| | import { ServerStyleSheet } from 'styled-components'; |
| |
|
| | import createEmotionCache from '../utils/createEmotionCache'; |
| |
|
| | export default class MyDocument extends Document { |
| | static async getInitialProps(ctx: DocumentContext) { |
| | const styledComponentsSheet = new ServerStyleSheet(); |
| |
|
| | const originalRenderPage = ctx.renderPage; |
| |
|
| | const cache = createEmotionCache(); |
| | const { extractCriticalToChunks } = createEmotionServer(cache); |
| |
|
| | try { |
| | ctx.renderPage = () => |
| | originalRenderPage({ |
| | |
| | enhanceApp: (App: any) => (props: any) => |
| | styledComponentsSheet.collectStyles( |
| | <App emotionCache={cache} {...props} /> |
| | ), |
| | }); |
| |
|
| | const initialProps = await Document.getInitialProps(ctx); |
| | 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, |
| |
|
| | styles: [ |
| | ...React.Children.toArray(initialProps.styles), |
| | styledComponentsSheet.getStyleElement(), |
| | ...emotionStyleTags, |
| | ], |
| | }; |
| | } finally { |
| | styledComponentsSheet.seal(); |
| | } |
| | } |
| | render() { |
| | return ( |
| | <Html> |
| | <Head> |
| | <link |
| | href="https://fonts.googleapis.com/css?family=Open+Sans" |
| | rel="stylesheet" |
| | /> |
| | </Head> |
| | <body> |
| | <Main /> |
| | <NextScript /> |
| | </body> |
| | </Html> |
| | ); |
| | } |
| | } |
| |
|
