hasOwn

Checks if an object has an own property with the specified key.

function hasOwn<T extends object>(object: T, key: PropertyKey): key is keyof T

Type Parameters

T

• Type: object

The type of the object.

Parameters

object

• Type: T

The object to check.

key

• Type: PropertyKey

The property key to check.

Returns

Returns true if object has an own property with key, else false.

Example

import { hasOwn } from '@chronus-dev/utils'

const user: object = { name: 'Alice', age: 18 }
const key = 'name'

if (hasOwn(user, key)) {
  console.log(user[key]) // => 'Alice'
}