@loopback/docs/site/apidocs/repository.uniontype.(constructor).md

Documentation for LoopBack 4

---
lang: en
title: 'API docs: repository.uniontype.(constructor)'
keywords: LoopBack 4.0, LoopBack 4
sidebar: lb4_sidebar
permalink: /doc/en/lb4/apidocs.repository.uniontype.(constructor).html
---

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[Home](./index.md) &gt; [@loopback/repository](./repository.md) &gt; [UnionType](./repository.uniontype.md) &gt; [(constructor)](./repository.uniontype.(constructor).md)

## UnionType.(constructor)

Constructs a new instance of the `UnionType` class

<b>Signature:</b>

```typescript
constructor(itemTypes: Type<any>[]);
```

## Parameters

|  Parameter | Type | Description |
|  --- | --- | --- |
|  itemTypes | <code>Type&lt;any&gt;[]</code> |  |