We don't currently support it.
We do have .format(), formatToParts() and resolvedOptions() of that subsection of the spec, but not formatRange() or formatRangeToParts()
Not sure about any workarounds for this at the moment.
We do have .format(), formatToParts() and resolvedOptions() of that subsection of the spec, but not formatRange() or formatRangeToParts()
Not sure about any workarounds for this at the moment.