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I found a bug even before the Activity hydration stuff.
If we're hydrating an Offscreen boundary in its "hidden" state it won't
have any content to hydrate so will trigger hydration errors (which are
then eaten by the Offscreen boundary itself). Leaving it not prewarmed.
This doesn't happen in the simple case because we'd be hydrating at a
higher priority than Offscreen at the root, and those are deferred to
Offscreen by not having higher priority. However, we've hydrating at the
Offscreen priority, which we do inside Suspense boundaries, then it
tries to hydrate against an empty set.
I ended up moving this to the Activity boundary in a future PR since
it's the SSR side that decided where to not render something and it only
has a concept of Activity, no Offscreen.
1dc05a5e22 (diff-d5166797ebbc5b646a49e6a06a049330ca617985d7a6edf3ad1641b43fde1ddfR1111)
react-dom
This package serves as the entry point to the DOM and server renderers for React. It is intended to be paired with the generic React package, which is shipped as react to npm.
Installation
npm install react react-dom
Usage
In the browser
import { createRoot } from 'react-dom/client';
function App() {
return <div>Hello World</div>;
}
const root = createRoot(document.getElementById('root'));
root.render(<App />);
On the server
import { renderToPipeableStream } from 'react-dom/server';
function App() {
return <div>Hello World</div>;
}
function handleRequest(res) {
// ... in your server handler ...
const stream = renderToPipeableStream(<App />, {
onShellReady() {
res.statusCode = 200;
res.setHeader('Content-type', 'text/html');
stream.pipe(res);
},
// ...
});
}
API
react-dom
See https://react.dev/reference/react-dom
react-dom/client
See https://react.dev/reference/react-dom/client