Function split

split(text?, delimiter?, max?, trim?): string[] | undefined
Returns the split array of the given string by the given delimiter
Parameters
- Optionaltext: null | string
  the source string to inspect
- delimiter: string = ','
  the delimiter to split strings, defaults to comma
- max: number = -1
  the max elements expected, negative means unlimited, defaults to -1
- trim: boolean = true
  whether trim each element before returning, defaults to true
Returns string[] | undefined
the split array of the given string by the given delimiter
Example
```
split('foo,bar');    // ['foo', 'bar']
split('hello | world | wonderful', '|', 2);    // ['hello', 'world']
```