How do I specify the date format of Tempus Dominus 6 (getdatepicker)?

I'm using version 6 of Tempus Dominus, whose documentation is found at https://getdatepicker.com/6/.

My question is:

• How do I set the date format?

I have this HTML control:

<div class="col-auto">
    <label for="fromDateInput">From date:</label>
    <div class="input-group" id="fromDate" data-td-target-input="nearest" data-td-target-toggle="nearest">
        <input id="fromDateInput" type="text" class="form-control" data-td-target="#fromDate">
        <span class="input-group-text" data-td-target="#fromDate" data-td-toggle="datetimepicker"><span class="fa-solid fa-calendar"></span></span>
    </div>
</div>

And I have the following JavaScript configuration of the Tempus Dominus datepicker control:

const picker = new tempusDominus.TempusDominus(document.getElementById('fromDate'), {
    display: {
        components: {
            clock: false
        }
    },
    localization: {
        startOfTheWeek: 1
    }
});

In the browser, the control looks like this:

I then select a date:

As you can see in the field, the date is written as 06/22/2022. However, I would like the format to be YYYY-MM-DD, such that the date in this instance becomes 2022-06-22. How do I achieve that?

I found documentation for it on the plugins overview page: https://getdatepicker.com/6/plugins/

It has the following example:

Per Picker
It is possible to use this system per picker. For instance:

const td = new tempusDominus.TempusDominus(document.getElementById('datetimepicker1'));
td.dates.formatInput = function(date) { {return moment(date).format('MM/DD/YYYY') } }

The code above would affect a single picker but not globally. You could easily adapt this code to have a common formatting function taking in a format string.

So I adapted my code in the following way:

const picker = new tempusDominus.TempusDominus(document.getElementById('fromDate'), {
    display: {
        components: {
            clock: false
        }
    },
    localization: {
        startOfTheWeek: 1
    }
});
picker.dates.formatInput = date => moment(date).format('YYYY-MM-DD')

And now the date format looks like I want it:

As you can see, the date is now written 2022-06-22.