/** Human-readable date for display; returns an empty string when unset. */
export function formatDate(value: string | null | undefined): string {
  if (!value) return ''
  return new Intl.DateTimeFormat('en-GB', { dateStyle: 'long' }).format(new Date(value))
}

/** Machine-readable date for the `datetime` attribute and structured data. */
export function isoDate(value: string | null | undefined): string {
  return value ? new Date(value).toISOString() : ''
}