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---
name: Use React and JSX
---
React just works with Bun. Bun supports `.jsx` and `.tsx` files out of the box.
Remember that JSX is just a special syntax for including HTML-like syntax in JavaScript files. It's commonReact uses JSX syntax, as do other React alternatives like [Preact](https://preactjs.com/) and [Solid](https://www.solidjs.com/). Bun's internal transpiler converts JSX syntax into vanilla JavaScript before execution.
---
Bun _assumes_ you're using React (unless you [configure it otherwise](/docs/runtime/bunfig#jsx)) so a line like this:
```
const element = <h1>Hello, world!</h1>;
```
---
is internally converted into something like this:
```ts
// jsxDEV
import { jsx } from "react/jsx-dev-runtime";
const element = jsx("h1", { children: "Hello, world!" });
```
---
This code requires `react` to run, so make sure you you've installed React.
```bash
$ bun install react
```
---
Bun implements special logging for JSX components to make debugging easier.
```bash
$ bun run log-my-component.tsx
<Component message="Hello world!" />
```
---
As far as "official support" for React goes, that's it. React is a library like any other, and Bun can run that library. Bun is not a framework, so you should use a framework like [Vite](https://vitejs.dev/) to build an app with server-side rendering and hot reloading in the browser.
Refer to [Runtime > JSX](/docs/runtime/jsx) for complete documentation on configuring JSX.
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