Get all the start and the end dates of weeks of a year starting 2022 in moment

Question

I want to get all the start and the end dates of weeks of a year starting 2022 in moment in YYYY-MM-DD (mysql) format.

I want the end result to look something like this:

[
    ['2022-01-04', '2022-01-10'],
    ['2022-01-11', '2022-01-17'],
    ['2022-01-18', '2022-01-24'],
    // ...
    ['2022-12-24', '2023-01-01'],
    ['2023-01-02', '2023-01-08'],
    // ...
    ['2023-12-25', '2024-01-01'],
    // ...
    // Until the end of 2026
];

EDIT 1: I tried the code below but it's failing:

const moment = require('moment');

const dateFormat = 'YYYY-MM-DD';
const dateToStart = '2022-04-11';
const dateToEnd = '2030-12-29';

function getWeeks() {
    const weeks = [];
    let currentDate = '2022-04-11';

    while (true) {

        if (currentDate === dateToStart) {
            weeks.push([dateToStart, moment(dateToStart, dateFormat).add(6, 'days').format(dateFormat)]);
        } else {
            weeks.push([
                moment(currentDate, dateFormat).add(1, 'days').format(dateFormat),
                moment(currentDate, dateFormat).add(6, 'days').format(dateFormat),
            ]);
        }
        currentDate = moment(dateToStart).add(6, 'days').format(dateFormat);

        if (currentDate === dateToEnd) break;
    }

    return weeks;
}

Answer 1

Momentjs provide some really usefull functions to get the desired output.

1. Create 2 moment objects, the start and end
2. Loop, while end isAfter start
3. Use .startOf('isoWeek') and .endOf('isoWeek') to get the range of a week
4. Append that to an array
5. Set the start moment object 1 week forward: .add(1, 'week')

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This example should get you started, note that I've lowered the dateToEnd.

const dateFormat = 'YYYY-MM-DD';
const dateToStart = '2022-04-01';
const dateToEnd = '2023-12-29';

let weeks = [];
let momsrt = moment.utc(dateToStart, dateFormat);
let momend = moment.utc(dateToEnd, dateFormat);

while (momend.isAfter(momsrt)) {
    weeks.push([
        momsrt.startOf('isoWeek').format(dateFormat),
        momsrt.endOf('isoWeek').format(dateFormat)
    ]);
    momsrt.add(1, 'week');
}

console.log(weeks);

<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.29.1/moment.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment-timezone/0.5.32/moment-timezone-with-data.min.js"></script>

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TL:DR; Don't use it for new projects, there are way better alternatives.