import { DateTime } from 'luxon-business-days';
// Use DateTime as normal

import { DateTime } from 'luxon-business-days';

const dt = DateTime.local();

// [Mon, Thur, Fri, Sun]
const awesomeFourDayBusinessWeek = [1, 4, 5, 7];

dt.setupBusiness({ businessDays: awesomeFourDayBusinessWeek });

import { DateTime } from 'luxon-business-days';

const dt = DateTime.local();
const { availableHolidayMatchers } = dt;
const myCompanyIsNoFun = [
  availableHolidayMatchers.isNewYearsDay,
  availableHolidayMatchers.isChristmasDay,
];

dt.setupBusiness({ holidayMatchers: myCompanyIsNoFun });

import { DateTime } from 'luxon-business-days';

const dt = DateTime.local();

dt.setupBusiness({ holidayMatchers: [] });
// Congrats, you will successfuly get everyone to quit

import { DateTime } from 'luxon-business-days';

/**
 * @param {DateTime} - An instance of DateTime.
 * @returns {boolean}
 */
const isCelebratingKobe = function(inst) {
  // Commemorate the day Kobe died
  const kobeRIP = DateTime.fromObject({ month: 1, day: 26 });

  // Celebrate Kobe Day
  const kobeDay = DateTime.fromObject({ month: 8, day: 24 });

  // Matches the following two days regardless of year
  return +inst === +kobeRIP || +inst === +kobeDay;
};

const dt = DateTime.local();
const myHolidays = [
  dt.availableHolidayMatchers.isNewYearsDay,
  dt.availableHolidayMatchers.isChristmasDay,
  isCelebratingKobe,
];

dt.setupBusiness({ holidayMatchers: myHolidays });
// Congrats, now your business will consider New Years, 
// Christmas, and the two Kobe days as holidays.

import { DateTime } from 'luxon-business-days';

// Day before July 4
let dt = DateTime.local(2019, 7, 3);

dt = dt.plusBusiness(); // 7/5/19 - Friday
dt = dt.plusBusiness({ days: 2 }); // 7/9/19 - Tuesday (Skipped through Saturday/Sunday)
dt = dt.minusBusiness({ days: 2 }); // back to 7/5/19
dt = dt.minusBusiness({ days: -2 }) // back to 7/9/19
dt = dt.plusBusiness({ days: -2 }); // back to 7/5/19

// Now do what you normally would with a DateTime instance.

import { DateTime } from 'luxon-business-days';

/**
 * @param {DateTime} - An instance of DateTime.
 * @param {string} region - An example extra param.
 * @param {Object} someStuff - An example extra param.
 * @returns {boolean}
 */
const someCustomRegionalMatcher = (inst, region, someStuff) => {
  // does some matching based on region and data in someStuff
}

/**
 * @param {DateTime} - An instance of DateTime.
 * @returns {boolean}
 */
const anotherCustomMatcher = inst => {
  // does some matching, but doesn't need additional info
}

let dt = DateTime.local();
const myHolidays = [
  someCustomRegionalMatcher,
  anotherCustomMatcher,
];

dt.setupBusiness({ holidayMatchers: myHolidays });

// Pass any additional argument to all your matchers
dt.isHoliday('middle-america', {some: 'stuff'});