formats curr date as str (useful for naming new files)

dateSufix.js

const formatDateAsString = date => {
    const fmt = new Intl.NumberFormat('en-US', {
        minimumIntegerDigits: 2,
        useGrouping: false,
    });
    const dateStr = [date.getFullYear(), date.getMonth() + 1, date.getDate()]
        .map(fmt.format)
        .join('');
    const time = [date.getHours(), date.getMinutes()]
    .map(fmt.format)
    .join('');

    return dateStr + '-' + time;
}