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4c12339ce3
This PR moves `flushSync` out of the reconciler. there is still an internal implementation that is used when these semantics are needed for React methods such as `unmount` on roots. This new isomorphic `flushSync` is only used in builds that no longer support legacy mode. Additionally all the internal uses of flushSync in the reconciler have been replaced with more direct methods. There is a new `updateContainerSync` method which updates a container but forces it to the Sync lane and flushes passive effects if necessary. This combined with flushSyncWork can be used to replace flushSync for all instances of internal usage. We still maintain the original flushSync implementation as `flushSyncFromReconciler` because it will be used as the flushSync implementation for FB builds. This is because it has special legacy mode handling that the new isomorphic implementation does not need to consider. It will be removed from production OSS builds by closure though
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