---
lang: en
title: 'API docs: authentication-jwt.tokenserviceconstants'
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.tokenserviceconstants.html
---

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[Home](./index.md) &gt; [@loopback/authentication-jwt](./authentication-jwt.md) &gt; [TokenServiceConstants](./authentication-jwt.tokenserviceconstants.md)

## TokenServiceConstants namespace

**Signature:**

```typescript
export declare namespace TokenServiceConstants 
```

## Variables

<table><thead><tr><th>

Variable


</th><th>

Description


</th></tr></thead>
<tbody><tr><td markdown="1">

[TOKEN\_EXPIRES\_IN\_VALUE](./authentication-jwt.tokenserviceconstants.token_expires_in_value.md)


</td><td markdown="1">


</td></tr>
<tr><td markdown="1">

[TOKEN\_SECRET\_VALUE](./authentication-jwt.tokenserviceconstants.token_secret_value.md)


</td><td markdown="1">


</td></tr>
</tbody></table>