| 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> |
| ); |
| } |
| } |
|
|
