differenceInISOWeekYears
import { differenceInISOWeekYears } from "https://esm.sh/v135/date-fns@3.6.0/index.d.mts";@example
// How many full ISO week-numbering years are between 1 January 2010 and 1 January 2012?
const result = differenceInISOWeekYears(
new Date(2012, 0, 1),
new Date(2010, 0, 1)
)
//=> 1
function differenceInISOWeekYears<DateType extends Date>(dateLeft: DateType | number | string, dateRight: DateType | number | string): number;