---
url: >-
  https://lit-ui-router.dev/api/ui-router-server/fetch/type-aliases/RequiredServeResponse.md
---
[ui-router-server](../../index.md) / [fetch](../index.md) / RequiredServeResponse

# Type Alias: RequiredServeResponse\<Args, Decls>

```ts
type RequiredServeResponse<Args, Decls> = string extends ResponseState<Decls> ? unknown : [ResponseState<Decls>] extends [never] ? unknown : {
  serveResponse: ServeResponse<Args>;
};
```

Defined in: [fetch.ts:185](https://github.com/simshanith/lit-ui-router/blob/4f9e1ea23844bc57088f9af022eec027c059192b/packages/ui-router-server/src/fetch.ts#L185)

Makes `serveResponse` required when a typed router declares response states.

## Type Parameters

| Type Parameter | Default type |
| ------ | ------ |
|  `Args` *extends* `unknown`\[] | \[] |
|  `Decls` *extends* [`RouteDeclaration`](../../redirects/interfaces/RouteDeclaration.md) | [`RouteDeclaration`](../../redirects/interfaces/RouteDeclaration.md) |