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.
const util = require('node:util'); util.isNullOrUndefined(0); // Returns: false util.isNullOrUndefined(undefined); // Returns: true util.isNullOrUndefined(null); // Returns: true
object is null | undefined