---
url: /api/core/types/utils/function-is-arrow-fn.md
description: api documentation of isArrowFn from @tsed/core
---

## Usage

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

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

## Overview

```ts
function isArrowFn(target: any): target is Function;
```

## Description

Checks if a value is an arrow function by verifying it has no prototype property.