addDays
import { addDays } from "https://esm.sh/v135/date-fns@3.6.0/index.d.mts";@example
// Add 10 days to 1 September 2014:
const result = addDays(new Date(2014, 8, 1), 10)
//=> Thu Sep 11 2014 00:00:00
function addDays<DateType extends Date>(date: DateType | number | string, amount: number): DateType;