Formatting date onload, not anymore possible?

Hi all,

i used to format date on load using moment:

		df.formatter = function (value, df) {
			var d = moment(value).toDate();
			var options = {
				weekday: "short",
				year: "numeric",
				month: "short",
				day: "numeric"
			let data = d.toLocaleDateString("it-IT", options);
			return data.replace(/(^|\s)[a-z]/g, function (f) {
				return f.toUpperCase();

Seems its not working anymore, since last update:

ERPNext: v9.x.x-develop (8df0556) (develop)
Frappe Framework: v9.x.x-develop (789e374) (develop)


ERPNext: v10.0.9 (master)
Frappe Framework: v10.0.10 (master)

Any hint?