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018c58c9c6
## Overview Does a few things: - Renames `enableSyncDefaultUpdates` to `forceConcurrentByDefaultForTesting` - Changes the way it's used so it's dead-code eliminated separate from `allowConcurrentByDefault` - Deletes a bunch of the gated code The gates that are deleted are unnecessary now. We were keeping them when we originally thought we would come back to being concurrent by default. But we've shifted and now sync-by default is the desired behavior long term, so there's no need to keep all these forked tests around. I'll follow up to delete more of the forked behavior if possible. Ideally we wouldn't need this flag even if we're still using `allowConcurrentByDefault`.
react
React is a JavaScript library for creating user interfaces.
The react package contains only the functionality necessary to define React components. It is typically used together with a React renderer like react-dom for the web, or react-native for the native environments.
Note: by default, React will be in development mode. The development version includes extra warnings about common mistakes, whereas the production version includes extra performance optimizations and strips all error messages. Don't forget to use the production build when deploying your application.
Usage
import { useState } from 'react';
import { createRoot } from 'react-dom/client';
function Counter() {
const [count, setCount] = useState(0);
return (
<>
<h1>{count}</h1>
<button onClick={() => setCount(count + 1)}>
Increment
</button>
</>
);
}
const root = createRoot(document.getElementById('root'));
root.render(<Counter />);