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_document.js
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_document.js
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import Document, { Head, Html, Main, NextScript } from 'next/document'
import { ServerStyleSheet } from 'styled-components'
export default class MyDocument extends Document {
render() {
return (
<Html lang="en">
<Head></Head>
<body>
<Main />
<NextScript />
</body>
</Html>
)
}
static async getInitialProps(ctx) {
const sheet = new ServerStyleSheet()
const originalRenderPage = ctx.renderPage
try {
ctx.renderPage = () =>
originalRenderPage({
enhanceApp: (App) => (props) =>
sheet.collectStyles(<App {...props} />),
})
const initialProps = await Document.getInitialProps(ctx)
return {
...initialProps,
styles: (
<>
{initialProps.styles}
{sheet.getStyleElement()}
</>
),
}
} finally {
sheet.seal()
}
}
}