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---
lang: en
title: 'API docs: testlab.tojson_11'
keywords: LoopBack 4.0, LoopBack 4, Node.js, TypeScript, OpenAPI
sidebar: lb4_sidebar
editurl: https://github.com/loopbackio/loopback-next/tree/master/packages/testlab
permalink: /doc/en/lb4/apidocs.testlab.tojson_11.html
---
<!-- Do not edit this file. It is automatically generated by API Documenter. -->
[Home](./index.md) > [@loopback/testlab](./testlab.md) > [toJSON](./testlab.tojson_11.md)
## toJSON() function
**Signature:**
```typescript
export declare function toJSON(value: unknown[] | null | undefined): unknown[] | null | undefined;
```
## Parameters
<table><thead><tr><th>
Parameter
</th><th>
Type
</th><th>
Description
</th></tr></thead>
<tbody><tr><td markdown="1">
value
</td><td markdown="1">
unknown\[\] \| null \| undefined
</td><td markdown="1">
</td></tr>
</tbody></table>
**Returns:**
unknown\[\] \| null \| undefined