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

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[Home](./index.md) &gt; [@loopback/authentication-jwt](./authentication-jwt.md) &gt; [RefreshtokenService](./authentication-jwt.refreshtokenservice.md) &gt; [(constructor)](./authentication-jwt.refreshtokenservice._constructor_.md)

## RefreshtokenService.(constructor)

Constructs a new instance of the `RefreshtokenService` class

<b>Signature:</b>

```typescript
constructor(refreshSecret: string, refreshExpiresIn: string, refreshIssure: string, refreshTokenRepository: RefreshTokenRepository, userService: MyUserService, jwtService: TokenService);
```

## Parameters

|  Parameter | Type | Description |
|  --- | --- | --- |
|  refreshSecret | string |  |
|  refreshExpiresIn | string |  |
|  refreshIssure | string |  |
|  refreshTokenRepository | [RefreshTokenRepository](./authentication-jwt.refreshtokenrepository.md) |  |
|  userService | [MyUserService](./authentication-jwt.myuserservice.md) |  |
|  jwtService | [TokenService](./authentication.tokenservice.md) |  |


