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

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[Home](./index.md) &gt; [@loopback/rest](./rest.md) &gt; [BodyParserFunction](./rest.bodyparserfunction.md)

## BodyParserFunction type

Plain function for body parsing

<b>Signature:</b>

```typescript
export declare type BodyParserFunction = (request: Request) => Promise<RequestBody>;
```
<b>References:</b> [RequestBody](./rest.requestbody.md)