isNullOrUndefined

function isNullOrUndefined

Usage

import { isNullOrUndefined } from "node:util";

Deprecated

Since v4.0.0 - Use value === undefined || value === null instead.


        isNullOrUndefined(object: unknown): object is null | undefined

Returns true if the given object is null or undefined. Otherwise, returns false.

const util = require('node:util');

util.isNullOrUndefined(0);
// Returns: false
util.isNullOrUndefined(undefined);
// Returns: true
util.isNullOrUndefined(null);
// Returns: true

Parameters

object: unknown

Return Type

object is null | undefined