# isMiddlewareClass

**Kind:** Function

**Source:** [`packages/core/middleware/utils.ts`](https://github.com/nestjs/nest/blob/master/packages/core/middleware/utils.ts#L100)

**Part of:** [Core](subsystem-packages-core)

## Signature

```ts
function isMiddlewareClass(middleware: any): middleware is Type<any>
```

## Parameters

| Name | Type |
|---|---|
| `middleware` | `any` |

**Returns:** `middleware is Type<any>`