@loopback/docs/site/apidocs/rest.routingtable.(constructor).md

Documentation for LoopBack 4

---
lang: en
title: 'API docs: rest.routingtable.(constructor)'
keywords: LoopBack 4.0, LoopBack 4
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permalink: /doc/en/lb4/apidocs.rest.routingtable.(constructor).html
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[Home](./index.md) &gt; [@loopback/rest](./rest.md) &gt; [RoutingTable](./rest.routingtable.md) &gt; [(constructor)](./rest.routingtable.(constructor).md)

## RoutingTable.(constructor)

Constructs a new instance of the `RoutingTable` class

<b>Signature:</b>

```typescript
constructor(_router?: RestRouter, _externalRoutes?: ExternalExpressRoutes | undefined);
```

## Parameters

|  Parameter | Type | Description |
|  --- | --- | --- |
|  \_router | <code>RestRouter</code> |  |
|  \_externalRoutes | <code>ExternalExpressRoutes &#124; undefined</code> |  |