packages/util/src/is/undefined.ts
// Copyright 2017-2024 @polkadot/util authors & contributors
// SPDX-License-Identifier: Apache-2.0
/**
* @name isUndefined
* @summary Tests for a `undefined` values.
* @description
* Checks to see if the input value is `undefined`.
* @example
* <BR>
*
* ```javascript
* import { isUndefined } from '@polkadot/util';
*
* console.log('isUndefined', isUndefined(void(0))); // => true
* ```
*/
// eslint-disable-next-line @typescript-eslint/no-explicit-any
export function isUndefined (value?: unknown): value is undefined {
return value === undefined;
}