client: create a date formatter utility

src/public/app/utils/formatters.js

@@ -0,0 +1,14 @@
+/**
+ * Formats the given date to a string based on the current locale.
+ * @param {Date | number} date 
+ * @param {"full" | "long" | "medium" | "short" | undefined} dateStyle 
+ * @param {"full" | "long" | "medium" | "short" | undefined} tiemStyle 
+ */
+export function formatDate(date, dateStyle = "medium", tiemStyle = "medium") {
+    const formatter = new Intl.DateTimeFormat(navigator.language, {
+        dateStyle: "medium",
+        timeStyle: "medium"
+    });
+
+    return formatter.format(date);
+}