How to sort with null/undefined values?

[arcanechimp]

I would like to custom sort each column, pushing null/undefined values to be last in both 'asc' and 'desc' sort. What's the best way to achieve this?

	plugins: { sort: { getSortValue: (value: any) => value || -Infinity } } 

Using -Infinity works for 'desc', but not 'asc'. Is there a way to access the sort order from the getSortValue function that I am missing?