subYears
import { subYears } from "https://esm.sh/v135/date-fns@3.6.0/index.d.mts";
@example
// Subtract 5 years from 1 September 2014:
const result = subYears(new Date(2014, 8, 1), 5)
//=> Tue Sep 01 2009 00:00:00
function subYears<DateType extends Date>(date: DateType | number | string, amount: number): DateType;