import { c as MS_IN_SECOND, b as MS_IN_MINUTE, a as MS_IN_HOUR } from "./constants-BuFquuHl.mjs";
import { n as normalizeUnit } from "./normalizeUnit-bp5SODxw.mjs";
import { s as startOfDate, a as startOfTime } from "./startOfTime-B-McK1mQ.mjs";
import units from "./units.mjs";
const { DATE, DAY, HOUR, MINUTE, MONTH, SECOND, YEAR } = units;
function startOf(date, unit) {
  unit = normalizeUnit(unit);
  let time = 0;
  switch (unit) {
    case YEAR:
      time = startOfDate(date, void 0, 0, 1);
      break;
    case MONTH:
      time = startOfDate(date, void 0, void 0, 1);
      break;
    case DATE:
    case DAY:
      time = startOfDate(date);
      break;
    case HOUR:
      time = startOfTime(date, MS_IN_HOUR);
      break;
    case MINUTE:
      time = startOfTime(date, MS_IN_MINUTE);
      break;
    case SECOND:
      time = startOfTime(date, MS_IN_SECOND);
      break;
  }
  time && date.setTime(time);
  return date;
}
export {
  startOf as default
};