# Type Alias: NodeHTTPCreateContextFn()<TRouter, TRequest, TResponse>

> 

> **NodeHTTPCreateContextFn**\<`TRouter`, `TRequest`, `TResponse`\>: (`opts`) => `MaybePromise`\<[`inferRouterContext`](https://trpc.io/docs/typedoc/server/index/type-aliases/inferRouterContext.md)\<`TRouter`\>\>

Defined in: [packages/server/src/adapters/node-http/types.ts:134](https://github.com/trpc/trpc/blob/7c907acfd8b31929214792e3b8c2ad7a8ac72563/packages/server/src/adapters/node-http/types.ts#L134)

The `createContext` function the Node.js adapters take.

## Type Parameters

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

## Parameters

| Parameter | Type |
| ------ | ------ |
| `opts` | [`NodeHTTPCreateContextFnOptions`](https://trpc.io/docs/typedoc/server/adapters/node-http/type-aliases/NodeHTTPCreateContextFnOptions.md)\<`TRequest`, `TResponse`\> |

## Returns

`MaybePromise`\<[`inferRouterContext`](https://trpc.io/docs/typedoc/server/index/type-aliases/inferRouterContext.md)\<`TRouter`\>\>