csv-stringify/sync does not output headers when input is an empty array #343
Description
Describe the bug
Even if used with header: true and columns options, csv-stringify/sync does not output headers when input is an empty array.
The stream or callback API does.
To Reproduce
const { stringify } = require('csv-stringify/sync')
stringify([], { header: true, columns: ['foo', 'bar']})
// ❌ returns ''
// expected 'foo,bar'
const { stringify } = require('csv-stringify')
stringify([], { header: true, columns: ['foo', 'bar']}, (e, content) => console.log(content))
// ✅ logs 'foo,bar'