startOfYear
import { startOfYear } from "https://esm.sh/v135/date-fns@3.6.0/index.d.mts";@example
// The start of a year for 2 September 2014 11:55:00:
const result = startOfYear(new Date(2014, 8, 2, 11, 55, 00))
//=> Wed Jan 01 2014 00:00:00
function startOfYear<DateType extends Date>(date: DateType | number | string): DateType;