---
url: /api/core/types/utils/function-prototype-of.md
description: api documentation of prototypeOf from @tsed/core
---

## Usage

```typescript
import { prototypeOf } from "@tsed/core";
```

> See [/packages/core/src/utils/prototypeOf.ts](https://github.com/tsedio/tsed/blob/v8.37.1/packages/core/src/utils/prototypeOf.ts#L0-L0).

## Overview

```ts
function prototypeOf(target: any): any;
```

## Description

Returns the prototype of a given class or instance.