| 'use client' |
| import { isServer, useSuspenseQuery } from '@tanstack/react-query' |
| import { Suspense } from 'react' |
|
|
| export const runtime = 'edge' |
|
|
| function getBaseURL() { |
| if (!isServer) { |
| return '' |
| } |
| if (process.env.VERCEL_URL) { |
| return `https://${process.env.VERCEL_URL}` |
| } |
| return 'http://localhost:3000' |
| } |
| const baseUrl = getBaseURL() |
| function useWaitQuery(props: { wait: number }) { |
| const query = useSuspenseQuery({ |
| queryKey: ['wait', props.wait], |
| queryFn: async () => { |
| const path = `/api/wait?wait=${props.wait}` |
| const url = baseUrl + path |
|
|
| const res: string = await ( |
| await fetch(url, { |
| cache: 'no-store', |
| }) |
| ).json() |
| return res |
| }, |
| }) |
|
|
| return [query.data as string, query] as const |
| } |
|
|
| function MyComponent(props: { wait: number }) { |
| const [data] = useWaitQuery(props) |
|
|
| return <div>result: {data}</div> |
| } |
|
|
| export default function MyPage() { |
| return ( |
| <> |
| <Suspense fallback={<div>waiting 100....</div>}> |
| <MyComponent wait={100} /> |
| </Suspense> |
| <Suspense fallback={<div>waiting 200....</div>}> |
| <MyComponent wait={200} /> |
| </Suspense> |
| <Suspense fallback={<div>waiting 300....</div>}> |
| <MyComponent wait={300} /> |
| </Suspense> |
| <Suspense fallback={<div>waiting 400....</div>}> |
| <MyComponent wait={400} /> |
| </Suspense> |
| <Suspense fallback={<div>waiting 500....</div>}> |
| <MyComponent wait={500} /> |
| </Suspense> |
| <Suspense fallback={<div>waiting 600....</div>}> |
| <MyComponent wait={600} /> |
| </Suspense> |
| <Suspense fallback={<div>waiting 700....</div>}> |
| <MyComponent wait={700} /> |
| </Suspense> |
| |
| <fieldset> |
| <legend> |
| combined <code>Suspense</code>-container |
| </legend> |
| <Suspense |
| fallback={ |
| <> |
| <div>waiting 800....</div> |
| <div>waiting 900....</div> |
| <div>waiting 1000....</div> |
| </> |
| } |
| > |
| <MyComponent wait={800} /> |
| <MyComponent wait={900} /> |
| <MyComponent wait={1000} /> |
| </Suspense> |
| </fieldset> |
| </> |
| ) |
| } |
|
|
