addMonths
import { addMonths } from "https://esm.sh/v135/date-fns@3.6.0/index.d.mts";@example
// Add 5 months to 1 September 2014:
const result = addMonths(new Date(2014, 8, 1), 5)
//=> Sun Feb 01 2015 00:00:00
// Add one month to 30 January 2023:
const result = addMonths(new Date(2023, 0, 30), 1)
//=> Tue Feb 28 2023 00:00:00
function addMonths<DateType extends Date>(date: DateType | number | string, amount: number): DateType;