How can I use a DateRangePicker as a SingleDatePicker without force the option and lose the DateRange functionality?

I am using this DateRangePicker jQuery plugin and it works perfect for when you are using it with dates ranges but I want to be able also to select just one date without lose the range functionality. In other words: if you open both calendars and pick just a date from each then I want to be able to click the Apply button. My issue: the click event for the calendars is not exposed and therefore I am unable to catch when the user click and where.

I know the plugin offer a setting singleDatePicker that when it is set to true it shows only one calendar but this is not what I am looking for. If I force this then the second calendar isn't show up.

See my code below (Fiddle here):

$(document).ready(function () {
    const dateRangePicker = $('.dateRangePicker');
    dateRangePicker.daterangepicker({
        autoUpdateInput: false,
        linkedCalendars: false,
        opens: 'left',
        locale: {
            cancelLabel: 'Clear'
        },
        timePicker: false,
        format: 'm/d/Y'
    });

    dateRangePicker.on('apply.daterangepicker', function (ev, picker) {
        const startDate = picker.startDate.format('MM/DD/YYYY');
        const endDate = picker.endDate.format('MM/DD/YYYY');

        if (startDate === endDate) {
            $(this).val(startDate);
        } else {
            $(this).val(startDate + ' ... ' + endDate);
        }
    });

    dateRangePicker.on('showCalendar.daterangepicker', function (ev, picker) {
        $('.applyBtn').prop('disabled', true);
    });

    dateRangePicker.on('cancel.daterangepicker', function (ev, picker) {
        $(this).val('');
    });
});

as soon as you click a date on any calendar then the plugin is forcing me to pick a second date which I would or wouldn't because in my form I can force always a range, I need to add the ability to choose a date or a range of dates.

Can I get some ideas for how to trick the plugin to achieve what I am looking for?

As mentioned in my comment, you can simply click the day two times to select a single day. However, this is not so obvious otherwise you would not have asked this question. In my application I show a ballon when the user selects a day but not click the day again.

The ballon is shown after 2.5 seconds and it disappears after 3 seconds or when a user clicks the same day again. It is shown only once, because I don't like to bother the user with information he already knows.

Here is my code for that:

var showBalloon = true;

$(document).ready(function () {
    const DateTime = luxon.DateTime;
    $('#picker').daterangepicker({
        timePicker: false,
        startDate: DateTime.now().startOf('day'),
        endDate: DateTime.now().startOf('day').plus({ days: 3 }),
        //locale: { format: 'yyyy-MM-dd' }
    });

    $('#picker').on('dateChange.daterangepicker', (ev, picker, side) => {
        $('.ballon').remove();
        if (showBalloon) {
            if (side == 'start') {
                setTimeout(() => {
                    if (picker.endDate == null) {
                        picker.container.find('.start-date').not('.off').showBalloon({
                            contents: 'Click the same day again for single date',
                            maxLifetime: 3000, 
                            minLifetime: 3000,
                            tipSize: 20,
                            css: {
                                fontSize: '1rem'
                            },
                            classname: 'ballon',
                            position: 'bottom'
                        });
                        showBalloon = false; // show ballon only once
                    }
                }, 2500);
            } else if (side == 'end' && picker.startDate.hasSame(picker.endDate, 'day')) {
                // Don't show the ballon if the user knows how to do it
                showBalloon = false;
            }
        }
    });

});

JSFiddle

Unfortunately the daterangepicker from Dan Grossman does not emit the dateChange.daterangepicker event, thus I must nudge you to my fork of daterangepicker