Function getFirst

getFirst<E>(
array?: null | E[] | readonly E[],
defaultValue?: null | E,
): undefined | null | E
Returns the first element of the given array
Type Parameters
- E
Parameters
- Optionalarray: null | E[] | readonly E[]
  the array to inspect
- OptionaldefaultValue: null | E
  the default value if the array is empty
Returns undefined | null | E
the first element of the given array
Author
David Hsing
Example
```
getFirst(['foo', 'bar']);    // 'foo'
```