function isNullOrUndefined
Usage in Deno
```typescript import { isNullOrUndefined } from "node:node__util.d.ts"; ```
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`.
```js
import util from 'node:util';
util.isNullOrUndefined(0);
// Returns: false
util.isNullOrUndefined(undefined);
// Returns: true
util.isNullOrUndefined(null);
// Returns: true
```
object is null | undefined