Function isUndefined

isUndefined(value): value is undefined
It will determine whether the provided value is undefined or not.
Parameters
- value: unknown
Returns value is undefined
Since
1.0.0

Example
```
isUndefined(undefined);
// => true
```
Example
```
isUndefined(void 0);
// => true
```
Example
```
isUndefined(null);
// => false
```
- Defined in is-undefined.ts:16