Function App

examples/react/basic/src/index.tsx:166–203

()

  )
}

function App() {
  const [state, setState] = useState(1)
  const [win, setWin] = useState<Window | null>(null)
  const [postId, setPostId] = useState(-1)
  return (
    <main className="example-shell">
      <Context.Provider value={{ count: state, setCount: setState }}>
        <QueryClientProvider client={queryClient}>
          <header className="example-header">
            <p className="example-eyebrow">TanStack Devtools</p>
            <h1>React basic example</h1>
            <p>
              Explore cached posts, plugin panels, and the development-only
              accessibility fixture in one focused sandbox.
            </p>
          </header>
          <section
            className="example-card example-actions"
            aria-label="Example controls"
          >
            <p>
              Current count <strong>{state}</strong>
            </p>
            <div className="example-button-row">
              <Button onClick={() => setState(state + 1)}>
                Increment count
              </Button>
              <Button onClick={() => setWin(window.open('', '', 'popup'))}>
                Open a new window
              </Button>
            </div>
          </section>
          {win && createPortal(<Mounted />, win.document.body)}
          <section className="example-card example-content">
            <Feature />
            <p>
              As you visit the posts below, you will notice them in a loading
              state the first time you load them. However, after you return to
              this list and click on any posts you have already visited again,
              you will see them load instantly and background refresh right