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import React from 'react'
import { flushSync } from 'react-dom'
import { createRoot } from 'react-dom/client'
import { renderToString } from 'react-dom/server'
import { NextPage } from 'next'
const Page: NextPage<{ html: string }> = ({ html }) =>
html ? (
<>
<p>saved:</p>
<div dangerouslySetInnerHTML={{ __html: html }} />
</>
) : (
<p>Hello world</p>
)
Page.getInitialProps = async ({ AppTree }) => {
let html: string
const toRender = <AppTree pageProps={{}} />
if (typeof window !== 'undefined') {
const el = document.createElement('div')
document.querySelector('body')?.appendChild(el)
flushSync(() => {
createRoot(el).render(toRender)
})
html = el.innerHTML
el.remove()
} else {
html = renderToString(toRender)
}
return { html }
}
export default Page
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