Function parseDateValue

packages/emcn/src/components/calendar/calendar.tsx:56–65

(value: string | Date | undefined)

 * (UTC midnight) produces in negative-offset timezones.
 */
export function parseDateValue(value: string | Date | undefined): Date | null {
  if (!value) return null
  if (value instanceof Date) return Number.isNaN(value.getTime()) ? null : value
  if (/^\d{4}-\d{2}-\d{2}/.test(value)) {
    const [year, month, day] = value.slice(0, 10).split('-').map(Number)
    return new Date(year, month - 1, day)
  }
  const parsed = new Date(value)
  return Number.isNaN(parsed.getTime()) ? null : parsed
}

/**
 * Human-readable label for a date value (e.g. `May 8, 2026`). Returns an empty