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bun.sh/docs/guides/ecosystem/express.mdx
2025-11-21 14:06:19 -08:00

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---
title: Build an HTTP server using Express and Bun
sidebarTitle: Express with Bun
mode: center
---
Express and other major Node.js HTTP libraries should work out of the box. Bun implements the [`node:http`](https://nodejs.org/api/http.html) and [`node:https`](https://nodejs.org/api/https.html) modules that these libraries rely on.
<Note>
Refer to the [Runtime > Node.js APIs](/runtime/nodejs-compat#node-http) page for more detailed compatibility
information.
</Note>
```sh terminal icon="terminal"
bun add express
```
---
To define a simple HTTP route and start a server with Express:
```ts server.ts icon="/icons/typescript.svg"
import express from "express";
const app = express();
const port = 8080;
app.get("/", (req, res) => {
res.send("Hello World!");
});
app.listen(port, () => {
console.log(`Listening on port ${port}...`);
});
```
---
To start the server on `localhost`:
```sh terminal icon="terminal"
bun server.ts
```