@loopback/docs/site/apidocs/repository.stringtype.serialize.md

Documentation for LoopBack 4

---
lang: en
title: 'API docs: repository.stringtype.serialize'
keywords: LoopBack 4.0, LoopBack 4
sidebar: lb4_sidebar
permalink: /doc/en/lb4/apidocs.repository.stringtype.serialize.html
---

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[Home](./index.md) &gt; [@loopback/repository](./repository.md) &gt; [StringType](./repository.stringtype.md) &gt; [serialize](./repository.stringtype.serialize.md)

## StringType.serialize() method

<b>Signature:</b>

```typescript
serialize(value: string | null | undefined): string | null | undefined;
```

## Parameters

|  Parameter | Type | Description |
|  --- | --- | --- |
|  value | <code>string &#124; null &#124; undefined</code> |  |

<b>Returns:</b>

`string | null | undefined`