Integrate in Next.js

Start with installation and basic usage. This example uses Next.js App Router to mount Univer Sheets in a container with an explicit height.

Load the editor from a Client Component with ssr: false. A use client directive alone does not disable prerendering. Next.js.

Integration Steps

Initialize Univer in the useEffect hook
Destroy Univer in the return function of the useEffect hook

Example

Each mount uses its own child container. Disposal runs in a microtask after the surrounding React cleanup, so nested React roots are not unmounted synchronously during a React commit.

TSX

'use client'import { UniverSheetsCorePreset } from '@univerjs/preset-sheets-core'import UniverPresetSheetsCoreEnUS from '@univerjs/preset-sheets-core/locales/en-US'import { createUniver, LocaleType, mergeLocales } from '@univerjs/presets'import { useEffect, useRef } from 'react'import '@univerjs/preset-sheets-core/lib/index.css'export default function UniverEditor() {  const containerRef = useRef<HTMLDivElement>(null)  useEffect(() => {    const host = containerRef.current    if (!host) return    const container = document.createElement('div')    container.style.height = '100%'    host.append(container)    const { univer, univerAPI } = createUniver({      locale: LocaleType.EN_US,      locales: {        [LocaleType.EN_US]: mergeLocales(          UniverPresetSheetsCoreEnUS,        ),      },      presets: [        UniverSheetsCorePreset({          container,        }),      ],    })    univerAPI.createWorkbook({})    return () => {      queueMicrotask(() => {        univer.dispose()        container.remove()      })    }  }, [])  return (    <div ref={containerRef} style={{ height: 600 }} />  )}

TSX

'use client'import dynamic from 'next/dynamic'const UniverEditor = dynamic(() => import('./univer-editor'), { ssr: false })export default function Page() {  return <UniverEditor />}

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