react-query/examples/react/nextjs-suspense-streaming/src/app/providers.tsx

'use client'

import {
  QueryClient,
  QueryClientProvider,
  isServer,
} from '@tanstack/react-query'
import { ReactQueryDevtools } from '@tanstack/react-query-devtools'
import * as React from 'react'
import { ReactQueryStreamedHydration } from '@tanstack/react-query-next-experimental'

function makeQueryClient() {
  return new QueryClient({
    defaultOptions: {
      queries: {
        staleTime: 60 * 1000,
      },
    },
  })
}

let browserQueryClient: QueryClient | undefined = undefined

function getQueryClient() {
  if (isServer) {
    return makeQueryClient()
  } else {
    if (!browserQueryClient) browserQueryClient = makeQueryClient()
    return browserQueryClient
  }
}

export function Providers(props: { children: React.ReactNode }) {
  const queryClient = getQueryClient()

  return (
    <QueryClientProvider client={queryClient}>
      <ReactQueryStreamedHydration>
        {props.children}
      </ReactQueryStreamedHydration>
      <ReactQueryDevtools initialIsOpen={false} />
    </QueryClientProvider>
  )
}