Updating first week DOW and DAY in moment.js Raw

moment-update-week-dow-day.js

const moment = require('moment');

const createDates = () => {
  return [
    moment({ year: 2015, month: 11, day: 25 }),
    moment({ year: 2015, month: 11, day: 26 }),
    moment({ year: 2015, month: 11, day: 27 }),
    moment({ year: 2015, month: 11, day: 28 }),
    moment({ year: 2015, month: 11, day: 29 }),
    moment({ year: 2015, month: 11, day: 30 }),
    moment({ year: 2015, month: 11, day: 31 }),
    moment({ year: 2016, month: 0, day: 1 }),
    moment({ year: 2016, month: 0, day: 2 }),
    moment({ year: 2016, month: 0, day: 3 }),
    moment({ year: 2016, month: 0, day: 4 }),
    moment({ year: 2016, month: 0, day: 5 }),
    moment({ year: 2016, month: 0, day: 6 }),
  ];
};

console.log('#################');

createDates().forEach(date => {
  console.log(`en: ${date} / year ${date.weekYear()} / date.week() ${date.week()}`);
});

moment.locale('en-am', {
  // customizations.
  week: { dow: 0, doy: 3 },
});

console.log('#################');

createDates().forEach(date => {
  console.log(`en: ${date} / year ${date.weekYear()} / date.week() ${date.week()}`);
});