Function joinWith

joinWith(
    texts?: null | string | string[],
    separator?: null | string,
    filter?: (text?: string) => boolean,
): undefined | string
Returns the joined string with the given texts and delimiter
Parameters
- Optionaltexts: null | string | string[]
  The source string or strings to inspect
- Optionalseparator: null | string
  The delimiter string to append between each of the given texts
- Optionalfilter: (text?: string) => boolean
  The filter to check each of the given texts should be included
Returns undefined | string
the joined string with the given texts and delimiter
Example
```
joinWith('foobar');    // 'foobar'
joinWith(['foo', 'bar'], undefined);    // 'foobar'
joinWith(['foo', 'bar', 'world'], undefined, (text => text !== 'world'));    // 'foobar'
```