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Sebastian Markbåge
93f1668045
We highly recommend using Node Streams in Node.js because it's much faster and it is less likely to cause issues when chained in things like compression algorithms that need explicit flushing which the Web Streams ecosystem doesn't have a good solution for. However, that said, people want to be able to use the worse option for various reasons. The `.edge` builds aren't technically intended for Node.js. A Node.js environments needs to be patched in various ways to support it. It's also less optimal since it can't use [Node.js exclusive features](https://github.com/facebook/react/pull/33388) and have to use [the lowest common denominator](https://github.com/facebook/react/pull/27399) such as JS implementations instead of native. This adds a Web Streams build of Fizz but exclusively for Node.js so that in it we can rely on Node.js modules. The main difference compared to Edge is that SSR now uses `createHash` from the `"crypto"` module and imports `TextEncoder` from `"util"`. We use `setImmediate` instead of `setTimeout`. The public API is just `react-dom/server` which in Node.js automatically imports `react-dom/server.node` which re-exports the legacy bundle, Node Streams bundle and Node Web Streams bundle. The main downside is if your bundler isn't smart to DCE this barrel file. With Flight the difference is larger but that's a bigger lift.
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 />);