React Example: Nextjs App Optimistic Updates

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import React from 'react'
import { HydrationBoundary, dehydrate, noop } from '@tanstack/react-query'
import { getQueryClient } from '@/app/get-query-client'
import { getTodos } from '@/app/api/todos/data'
import { todosQueryOptions } from '@/app/todos'
import ApproachTabs from '@/components/ApproachTabs'

export default function Home() {
  const queryClient = getQueryClient()

  void queryClient
    .query({
      ...todosQueryOptions,
      queryFn: getTodos,
    })
    .catch(noop)

  return (
    <main style={{ maxWidth: 600, margin: '0 auto', padding: '2rem 1rem' }}>
      <h1>Optimistic Updates with TanStack Query</h1>
      <p style={{ color: '#666', marginBottom: '1.5rem' }}>
        Add todos to see optimistic updates in action. The server randomly fails
        ~30% of the time so you can observe automatic rollback.
      </p>
      <HydrationBoundary state={dehydrate(queryClient)}>
        <React.Suspense fallback={<p>Loading todos…</p>}>
          <ApproachTabs />
        </React.Suspense>
      </HydrationBoundary>
    </main>
  )
}

import React from 'react'
import { HydrationBoundary, dehydrate, noop } from '@tanstack/react-query'
import { getQueryClient } from '@/app/get-query-client'
import { getTodos } from '@/app/api/todos/data'
import { todosQueryOptions } from '@/app/todos'
import ApproachTabs from '@/components/ApproachTabs'

export default function Home() {
  const queryClient = getQueryClient()

  void queryClient
    .query({
      ...todosQueryOptions,
      queryFn: getTodos,
    })
    .catch(noop)

  return (
    <main style={{ maxWidth: 600, margin: '0 auto', padding: '2rem 1rem' }}>
      <h1>Optimistic Updates with TanStack Query</h1>
      <p style={{ color: '#666', marginBottom: '1.5rem' }}>
        Add todos to see optimistic updates in action. The server randomly fails
        ~30% of the time so you can observe automatic rollback.
      </p>
      <HydrationBoundary state={dehydrate(queryClient)}>
        <React.Suspense fallback={<p>Loading todos…</p>}>
          <ApproachTabs />
        </React.Suspense>
      </HydrationBoundary>
    </main>
  )
}