---
url: >-
  https://lit-ui-router.dev/api/lit-ui-router-ssr/vite/interfaces/ServerRouterPlugin.md
---
[lit-ui-router-ssr](../../index.md) / [vite](../index.md) / ServerRouterPlugin

# Interface: ServerRouterPlugin

Defined in: packages/ui-router-server/dist/vite.d.ts:103

A structural subset of Vite's `Plugin` — assignable into `plugins: [...]`.

## Properties

| Property | Type | Description | Defined in |
| ------ | ------ | ------ | ------ |
|  `closeBundle` | { `handler`(`this`, `error?`): `Promise`<`void`>; `order`: `"post"`; `sequential`: `true`; } | Runs the prerender entry once the client build has written its output. | packages/ui-router-server/dist/vite.d.ts:113 |
| `closeBundle.handler` | (`this`, `error?`) => `Promise`<`void`> | The build step; a no-op without [prerender](ServerRouterPluginOptions.md#prerender). | packages/ui-router-server/dist/vite.d.ts:119 |
| `closeBundle.order` | `"post"` | After every other plugin's `closeBundle`. | packages/ui-router-server/dist/vite.d.ts:115 |
| `closeBundle.sequential` | `true` | Not alongside them. | packages/ui-router-server/dist/vite.d.ts:117 |
|  `name` | `string` | The plugin name Vite reports in errors and logs. | packages/ui-router-server/dist/vite.d.ts:105 |

## Methods

### configResolved()

```ts
configResolved(config): void;
```

Defined in: packages/ui-router-server/dist/vite.d.ts:107

Reads the root, the output directory and the logger.

#### Parameters

| Parameter | Type |
| ------ | ------ |
| `config` | `ViteResolvedConfig` |

#### Returns

`void`

***

### configurePreviewServer()

```ts
configurePreviewServer(server): void;
```

Defined in: packages/ui-router-server/dist/vite.d.ts:111

Installs the same middleware into `vite preview`, serving the prerendered pages when there are any.

#### Parameters

| Parameter | Type |
| ------ | ------ |
| `server` | `ViteMiddlewareServer` |

#### Returns

`void`

***

### configureServer()

```ts
configureServer(server): void;
```

Defined in: packages/ui-router-server/dist/vite.d.ts:109

Installs the middleware into `vite dev`, synchronously so it lands in the PRE position.

#### Parameters

| Parameter | Type |
| ------ | ------ |
| `server` | `ViteMiddlewareServer` |

#### Returns

`void`