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import * as React from "react";
import Document, {
DocumentContext,
DocumentProps,
Head,
Html,
Main,
NextScript,
} from "next/document";
import createEmotionServer from "@emotion/server/create-instance";
import { AppType } from "next/app";
import { poppins } from "@/lib/theme";
import createEmotionCache from "@/lib/createEmotionCache";
import { MyAppProps } from "./_app";
import { getInitColorSchemeScript } from "@mui/material/styles";
interface MyDocumentProps extends DocumentProps {
emotionStyleTags: JSX.Element[];
}
export default function MyDocument({ emotionStyleTags }: MyDocumentProps) {
return (
<Html lang="en" className={poppins.className}>
<Head>
<link rel="shortcut icon" href="/favicon.ico" />
<meta name="emotion-insertion-point" content="" />
{emotionStyleTags}
</Head>
<body>
{getInitColorSchemeScript()}
<Main />
<NextScript />
</body>
</Html>
);
}
// `getInitialProps` belongs to `_document` (instead of `_app`),
// it's compatible with static-site generation (SSG).
MyDocument.getInitialProps = async (ctx: DocumentContext) => {
// 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
const originalRenderPage = ctx.renderPage;
// You can consider sharing the same Emotion cache between all the SSR requests to speed up performance.
// However, be aware that it can have global side effects.
const cache = createEmotionCache();
const { extractCriticalToChunks } = createEmotionServer(cache);
ctx.renderPage = () =>
originalRenderPage({
enhanceApp: (App: React.ComponentType<React.ComponentProps<AppType> & MyAppProps>) =>
function EnhanceApp(props) {
return <App emotionCache={cache} {...props} />;
},
});
const initialProps = await Document.getInitialProps(ctx);
// This is important. It prevents Emotion to render invalid HTML.
// See https://github.com/mui/material-ui/issues/26561#issuecomment-855286153
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,
emotionStyleTags,
};
};
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