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---
lang: en
title: 'API docs: openapi-v3.oasenhancerservice.applyenhancerbyname'
keywords: LoopBack 4.0, LoopBack 4, Node.js, TypeScript, OpenAPI
sidebar: lb4_sidebar
editurl: https://github.com/loopbackio/loopback-next/tree/master/packages/openapi-v3
permalink: /doc/en/lb4/apidocs.openapi-v3.oasenhancerservice.applyenhancerbyname.html
---

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[Home](./index.md) &gt; [@loopback/openapi-v3](./openapi-v3.md) &gt; [OASEnhancerService](./openapi-v3.oasenhancerservice.md) &gt; [applyEnhancerByName](./openapi-v3.oasenhancerservice.applyenhancerbyname.md)

## OASEnhancerService.applyEnhancerByName() method

Apply a given enhancer's merge function. Return the latest \_spec.

**Signature:**

```typescript
applyEnhancerByName(name: string): Promise<OpenApiSpec>;
```

## Parameters

|  Parameter | Type | Description |
|  --- | --- | --- |
|  name | string | The name of the enhancer you want to apply |

**Returns:**

Promise&lt;[OpenApiSpec](./openapi-v3.openapispec.md)<!-- -->&gt;