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Projects that use Express and other major Node.js HTTP libraries should work out of the box.
{% callout %}
If you run into bugs, [please file an issue](https://bun.sh/issues) _in Bun's repo_, not the library. It is Bun's responsibility to address Node.js compatibility issues.
{% /callout %}
```ts
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}...`);
});
```
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. These modules can also be used directly, though [`Bun.serve`](/docs/api/http) is recommended for most use cases.
{% callout %}
**Note** — Refer to the [Runtime > Node.js APIs](/docs/runtime/nodejs-apis#node_http) page for more detailed compatibility information.
{% /callout %}
```ts
import * as http from "node:http";
http
.createServer(function (req, res) {
res.write("Hello World!");
res.end();
})
.listen(8080);
```
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