> ## Documentation Index
> Fetch the complete documentation index at: https://docs.tappify.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# ExpressMiddleware

> What toExpress returns: an Express middleware over the three arguments.

```ts theme={null}
type ExpressMiddleware = (request, response, next) => void;
```

What `toExpress` returns: an Express middleware over the three arguments.

## Parameters

### request

[`ExpressLikeRequest`](/extensions/reference/server-api/Interface.ExpressLikeRequest)

### response

[`ExpressLikeResponse`](/extensions/reference/server-api/Interface.ExpressLikeResponse)

### next

(`error?`) => `void`

## Returns

`void`