import React from 'react';
import Document, { Head, Main, NextScript } from 'next/document';
import { ServerStyleSheets } from '@material-ui/styles';
import theme from '../components/theme';
class MyDocument extends Document {
render() {
return (
{/* PWA primary color */}
);
}
}
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
// Render app and page and get the context of the page with collected side effects.
const sheets = new ServerStyleSheets();
const originalRenderPage = ctx.renderPage;
ctx.renderPage = () =>
originalRenderPage({
enhanceApp: App => props => sheets.collect(),
});
const initialProps = await Document.getInitialProps(ctx);
return {
...initialProps,
// Styles fragment is rendered after the app and page rendering finish.
styles: [
{initialProps.styles}
{sheets.getStyleElement()}
,
],
};
};
export default MyDocument;