"use strict";
const constants = require("./constants-DR3SPJ7u.js");
const normalizeUnit = require("./normalizeUnit-Cn0hUyBC.js");
const startOfTime = require("./startOfTime-CiMtfVAs.js");
const units = require("./units.js");
const { DATE, DAY, HOUR, MINUTE, MONTH, SECOND, YEAR } = units;
function startOf(date, unit) {
  unit = normalizeUnit.normalizeUnit(unit);
  let time = 0;
  switch (unit) {
    case YEAR:
      time = startOfTime.startOfDate(date, void 0, 0, 1);
      break;
    case MONTH:
      time = startOfTime.startOfDate(date, void 0, void 0, 1);
      break;
    case DATE:
    case DAY:
      time = startOfTime.startOfDate(date);
      break;
    case HOUR:
      time = startOfTime.startOfTime(date, constants.MS_IN_HOUR);
      break;
    case MINUTE:
      time = startOfTime.startOfTime(date, constants.MS_IN_MINUTE);
      break;
    case SECOND:
      time = startOfTime.startOfTime(date, constants.MS_IN_SECOND);
      break;
  }
  time && date.setTime(time);
  return date;
}
module.exports = startOf;