# Type Alias: FetchCreateContextOption<TRouter>

> 

> **FetchCreateContextOption**\<`TRouter`\>: [`CreateContextCallback`](https://trpc.io/docs/typedoc/server/index/type-aliases/CreateContextCallback.md)\<[`inferRouterContext`](https://trpc.io/docs/typedoc/server/index/type-aliases/inferRouterContext.md)\<`TRouter`\>, [`FetchCreateContextFn`](https://trpc.io/docs/typedoc/server/adapters/fetch/type-aliases/FetchCreateContextFn.md)\<`TRouter`\>\>

Defined in: [packages/server/src/adapters/fetch/types.ts:39](https://github.com/trpc/trpc/blob/7c907acfd8b31929214792e3b8c2ad7a8ac72563/packages/server/src/adapters/fetch/types.ts#L39)

The Fetch adapter's `createContext` option.

## Type Parameters

| Type Parameter |
| ------ |
| `TRouter` *extends* [`AnyTRPCRouter`](https://trpc.io/docs/typedoc/server/index/type-aliases/AnyTRPCRouter.md) |