import Document, { DocumentContext, Html, Head, Main, NextScript } from 'next/document'; import Script from 'next/script'; import { ServerStyleSheet } from 'styled-components'; import { GOOGLE_ANALYTICS_KEY } from '../utils/gtag'; class Doc extends Document { static async getInitialProps(ctx: DocumentContext) { const sheet = new ServerStyleSheet(); const originalRenderPage = ctx.renderPage; try { ctx.renderPage = () => originalRenderPage({ enhanceApp: App => props => sheet.collectStyles() }); const initialProps = await Document.getInitialProps(ctx); return { ...initialProps, styles: ( <> {initialProps.styles} {sheet.getStyleElement()} ) }; } finally { sheet.seal(); } } render() { return (