UPDATE. I got the answer in StackOverflow and already solved this issue.

Hi everybody,

I'm trying to figure out the problem.

We have this code (written by my colleague):

/**
     * @type {object}
     */
    Object.defineProperty(DateTimePicker.prototype,
        "OPTIONS",
        {
            get: function () {
                return {
                    useStrict: false,
                    format: this.FORMAT,
                    maxDate: this.MAX_DATE,
                    minDate: this.MIN_DATE,
                    defaultDate: null,
                    viewDate: null,
                    icons: this.ICONS
                };
            }
        });

Somewhere in another place of the code I see this:

if (!this.timeOnly) {
                            let value = services.Date.momentFromDateString(val).format(this.FORMAT);
                            this.OPTIONS.defaultDate = value;
                            this.OPTIONS.viewDate = value;                                
                        }

                        if (!_.isUndefined(this.datetimepicker)) {
                            this.datetimepicker.data("DateTimePicker").destroy();
                            this.datetimepicker = undefined;
                        }

                        this.datetimepicker = this.element.find(".input-group").datetimepicker(this.OPTIONS);
                        this.datetimepicker.data("DateTimePicker").date(val);

However, when I trace that code, the this.OPTIONS.defaultDate remains null despite an attempt to set it. I am thinking the reason is in the code above.

How should it be changed to being able to set the value correctly? We only want to return that set of options with default values when they are not yet set.

Thanks in advance.