---
url: /api/core/types/utils/function-is-enumerable.md
description: api documentation of isEnumerable from @tsed/core
---

## Usage

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

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

## Overview

```ts
function isEnumerable(obj: any, key: string): boolean | undefined;
```

## Description

Checks if a property is enumerable on an object, considering its prototype chain.