Function isUndefinedOrNull

isUndefinedOrNull<T>(value: T): boolean
Checks if a value is either null or undefined.
Type Parameters
- T
Parameters
- value: T
  The value to check.
Returns boolean
True if the value is null or undefined, false otherwise.
Example
```
isUndefinedOrNull(null); // true
isUndefinedOrNull(undefined); // true
isUndefinedOrNull(0); // false
isUndefinedOrNull(""); // false
```
- Defined in src/checks.ts:29