Function formatRelativeTime

apps/vis/web/src/util/time.ts:2–17

(epochMs: number)

/** Format an epoch-ms timestamp as a short relative string ("2m ago", "3h ago"). */
export function formatRelativeTime(epochMs: number): string {
  if (!epochMs || !Number.isFinite(epochMs)) return '—';
  const diff = Date.now() - epochMs;
  if (diff < 0) return 'just now';
  const s = Math.floor(diff / 1000);
  if (s < 60) return `${s}s ago`;
  const m = Math.floor(s / 60);
  if (m < 60) return `${m}m ago`;
  const h = Math.floor(m / 60);
  if (h < 24) return `${h}h ago`;
  const d = Math.floor(h / 24);
  if (d < 30) return `${d}d ago`;
  const mo = Math.floor(d / 30);
  if (mo < 12) return `${mo}mo ago`;
  return `${Math.floor(mo / 12)}y ago`;
}

/** Format an epoch-ms timestamp as ISO-ish local time (YYYY-MM-DD HH:MM:SS). */
export function formatAbsoluteTime(epochMs: number): string {