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import requiredArgs from '../_lib/requiredArgs/index.ts'import getDay from '../getDay.js'import addDays from '../addDays.js'import toDate from '../toDate.js'import { Day } from '../types.ts'
const baseMap = [7, 6, 5, 4, 3, 2, 1]
/** * @name nextDay * @category Weekday Helpers * @summary When is the next day of the week? * * @description * When is the next day of the week? 0-6 the day of the week, 0 represents Sunday. * * @param {Date | number} date - the date to check * @param {Day} day - day of the week * @returns {Date} - the date is the next day of week * @throws {TypeError} - 2 arguments required * * @example * // When is the next Monday after Mar, 20, 2020? * const result = nextDay(new Date(2020, 2, 20), 1) * //=> Mon Mar 23 2020 00:00:00 * * @example * // When is the next Tuesday after Mar, 21, 2020? * const result = nextDay(new Date(2020, 2, 21), 2) * //=> Tue Mar 24 2020 00:00:00 */export default function nextDay(date: Date | number, day: Day): Date {  requiredArgs(2, arguments)  const map = genMap(day)  return addDays(toDate(date), map[getDay(toDate(date))])}
function genMap(daysToMove: number): number[] {  if (daysToMove === 0) {    return baseMap  } else {    const mapStart = baseMap.slice(-daysToMove)    const mapEnd = baseMap.slice(0, baseMap.length - daysToMove)    return mapStart.concat(mapEnd)  }}