// Fixed locale and UTC keep server-rendered dates deterministic
// (no hydration mismatches, no test flakiness across machines).
const dateFormatter = new Intl.DateTimeFormat("en-US", {
  dateStyle: "long",
  timeZone: "UTC",
});

export function formatDate(date: Date | null | undefined): string {
  if (!date) return "—";
  return dateFormatter.format(date);
}

export function isoDate(date: Date | null | undefined): string | undefined {
  return date ? date.toISOString() : undefined;
}