When provided Headers in Unparse if the data is empty the resulting string should just be a header

[hikarunoryoma]

I would expect that when unparse runs and headers are provided as part of the UnparseConfig options that the returned string will just have a single row of headers instead of empty string.

Example:

const headers = ['header1', 'header2', 'header3'];
const config = { columns: headers, };

let headers = unparse([], config); // should be 'header1,header2,header3'

[MarkSFrancis]

As a workaround for this, I used [{}] as the data instead of []

const headers = ['header1', 'header2', 'header3'];
const config = { columns: headers, };

let headers = unparse([], config); // ''
let headers = unparse([{}], config); // 'header1,header2,header3\n'