# Type Alias: AWSLambdaCreateContextFn()<TRouter, TEvent>

> 

> **AWSLambdaCreateContextFn**\<`TRouter`, `TEvent`\>: (`{
  event,
  context,
  info,
}`) => [`inferRouterContext`](https://trpc.io/docs/typedoc/server/index/type-aliases/inferRouterContext.md)\<`TRouter`\> \| `Promise`\<[`inferRouterContext`](https://trpc.io/docs/typedoc/server/index/type-aliases/inferRouterContext.md)\<`TRouter`\>\>

Defined in: [packages/server/src/adapters/aws-lambda/index.ts:57](https://github.com/trpc/trpc/blob/57482b0bb09dce5c838dc8bf5727a943488bac61/packages/server/src/adapters/aws-lambda/index.ts#L57)

The `createContext` function the AWS Lambda adapter takes.

## Type Parameters

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

## Parameters

| Parameter | Type |
| ------ | ------ |
| `{ event, context, info, }` | [`CreateAWSLambdaContextOptions`](https://trpc.io/docs/typedoc/server/adapters/aws-lambda/type-aliases/CreateAWSLambdaContextOptions.md)\<`TEvent`\> |

## Returns

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