ignoreColumns is not working #455

I occasionally get CSVs that have an extra comma on the header and rows. This results in the parser giving me unwanted columns, like 'field18'. I tried using the ignoreColumns option parameter like this:

		const converter = csv({
			noheader: false,
			ignoreColumns: /field\d+$/
		})

Or even hardcoding the column like this:

		const converter = csv({
			noheader: false,
			ignoreColumns: /field18/
		})

But it still gives me these unwanted columns. I suspect it is because 'field18' is not in the header. How can I get around this without deleting the trailing commas? I have an automated process, so manually editing the CSV is not an option.

Thanks!