---
url: https://node-ts.github.io/bus/api/bus-core/type-aliases/Next.md
---
[API reference](../../index.md) / [@node-ts/bus-core](../index.md) / Next

# Type Alias: Next

```ts
type Next = () => void | Promise<void>;
```

Defined in: [packages/bus-core/src/util/middleware.ts:9](https://github.com/node-ts/bus/blob/2e6cf65c27833b707ae31ee623cfb6343770f434/packages/bus-core/src/util/middleware.ts#L9)

'next' function, passed to a middleware

## Returns

`void` | `Promise`<`void`>