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

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[Home](./index.md) &gt; [@loopback/rest](./rest.md) &gt; [AjvFactory](./rest.ajvfactory.md)

## AjvFactory type

Factory function for Ajv instances

<b>Signature:</b>

```typescript
export declare type AjvFactory = (options?: ajv.Options) => Ajv;
```