@loopback/docs/site/apidocs/express.createmiddlewarebinding.md

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---
lang: en
title: 'API docs: express.createmiddlewarebinding'
keywords: LoopBack 4.0, LoopBack 4, Node.js, TypeScript, OpenAPI
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[Home](./index.md) &gt; [@loopback/express](./express.md) &gt; [createMiddlewareBinding](./express.createmiddlewarebinding.md)

## createMiddlewareBinding() function

Create a binding for the middleware provider class

<b>Signature:</b>

```typescript
export declare function createMiddlewareBinding(middlewareProviderClass: Constructor<Provider<Middleware>>, options?: MiddlewareBindingOptions): Binding<Middleware>;
```

## Parameters

|  Parameter | Type | Description |
|  --- | --- | --- |
|  middlewareProviderClass | [Constructor](./context.constructor.md)<!-- -->&lt;[Provider](./context.provider.md)<!-- -->&lt;[Middleware](./express.middleware.md)<!-- -->&gt;&gt; | Middleware provider class |
|  options | [MiddlewareBindingOptions](./express.middlewarebindingoptions.md) | Options to create middleware binding |

<b>Returns:</b>

[Binding](./context.binding.md)<!-- -->&lt;[Middleware](./express.middleware.md)<!-- -->&gt;