) } // MyDocument.renderDocument = Document.renderDocument MyDocument.getInitialProps = async (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() } } export default MyDocument