Function getTypeof

getTypeof(array?: any[] | readonly any[] | null): string[] | undefined
Returns the element types of the given array
Parameters
- Optionalarray: any[] | readonly any[] | null
  The array to check
Returns string[] | undefined
the element types of the given array
Author
David Hsing
Example
```
getTypeof(['foo', 'bar']);    // ['string', 'string']
```