---
title: 'createServer - @nx/angular-rspack/ssr'
description: 'API Reference for createServer from @nx/angular-rspack/ssr'
sidebar:
  label: 'Create Server'
filter: 'type:References'
---

```shell
import { createServer } from '@nx/angular-rspack/ssr';
```

The `createServer` function is used to setup Angular `CommonEngine` using an `express` server.
It takes the bootstrap function as an argument, which is the function that bootstraps the Angular server application.
This is usually `main.server.ts`. It returns `RsbuildAngularServer` which contains the server instance to allow further modifications as well as the listen method to start the server.

```ts
function createServer(
  bootstrap: any,
  opts?: RspackAngularServerOptions
): RspackAngularServer;
```

---

## Examples

{% tabs %}
{% tabitem label="Standard Express Server Usage" %}
The following example shows how to create a standard express server:

```ts
// myapp/src/server.ts
import { createServer } from '@nx/angular-rspack/ssr';
import bootstrap from './main.server';

const server = createServer(bootstrap);

/** Add your custom server logic here
 *
 * For example, you can add a custom static file server:
 *
 * server.app.use('/static', express.static(staticFolder));
 *
 * Or add additional api routes:
 *
 * server.app.get('/api/hello', (req, res) => {
 *   res.send('Hello World!');
 * });
 *
 * Or add additional middleware:
 *
 * server.app.use((req, res, next) => {
 *   res.send('Hello World!');
 * });
 */

server.listen();
```

{% /tabitem %}
{% /tabs %}

---

## RspackAngularServer

```ts
export interface RspackAngularServer {
  app: express.Express;
  listen: (port?: number) => void;
}
```

---

### `app`

`express.Express`
The express application instance.

### `listen`

`(port?: number) => void`
Starts the express application on the specified port. If no port is provided, the default port (4000) is used.

---

## RspackAngularServerOptions

```ts
export interface RspackAngularServerOptions {
  serverDistFolder?: string;
  browserDistFolder?: string;
  indexHtml?: string;
}
```

---

### `serverDistFolder`

`string`
The folder where the server bundle is located. Defaults to the `dist/server` folder.

### `browserDistFolder`

`string`
The folder where the browser bundle is located. Defaults to the `dist/browser` folder.

### `indexHtml`

`string`
The path to the index.html file. Defaults to the `index.html` file in the `browserDistFolder`.