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Sebastian Silbermann
9c48fb25ec
```diff -expect(ReactTestUtils.isDOMComponent(maybeElement)).toBe(true); +expect(maybeElement).toBeInstanceOf(Element); ``` It's not equivalent since `isDOMComponent` checks `maybeElement.nodeType === Element.ELEMENT_NODE && !!maybeElement.tagName` but `instanceof` check seems sufficient here. Checking `nodeType` is mostly for cross-realm checks and checking falsy `tagName` seems like a check specifically for incomplete DOM implementations because tagName can't be empty by spec I believe.
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