function isNullOrUndefined
Usage in Deno
import { isNullOrUndefined } from "node:util";
isNullOrUndefined(object: unknown): object is null | undefined
Deprecated
Since v4.0.0 - Use value === undefined || value === null instead.
Returns true if the given object is null or undefined. Otherwise,
returns false.
import util from 'node:util';
util.isNullOrUndefined(0);
// Returns: false
util.isNullOrUndefined(undefined);
// Returns: true
util.isNullOrUndefined(null);
// Returns: true
object is null | undefined