first commit

src/utils/date.util.ts

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+export function formatRelativeFr(iso: string | number | Date): string {
+  const d = typeof iso === 'string' || typeof iso === 'number' ? new Date(iso) : iso;
+  if (!d || isNaN(d.getTime())) return '';
+  const now = new Date();
+  const diffMs = now.getTime() - d.getTime();
+  const sec = Math.max(0, Math.floor(diffMs / 1000));
+  const min = Math.floor(sec / 60);
+  const hr = Math.floor(min / 60);
+  const day = Math.floor(hr / 24);
+  const week = Math.floor(day / 7);
+  const month = Math.floor(day / 30);
+  const year = Math.floor(day / 365);
+
+  if (year >= 1) return `il y a ${year} ${year > 1 ? 'ans' : 'an'}`;
+  if (month >= 1) return `il y a ${month} ${month > 1 ? 'mois' : 'mois'}`;
+  if (week >= 1) return `il y a ${week} ${week > 1 ? 'semaines' : 'semaine'}`;
+  if (day >= 1) return `il y a ${day} ${day > 1 ? 'jours' : 'jour'}`;
+  if (hr >= 1) return `il y a ${hr} ${hr > 1 ? 'heures' : 'heure'}`;
+  if (min >= 1) return `il y a ${min} ${min > 1 ? 'minutes' : 'minute'}`;
+  return `à l'instant`;
+}
+
+export function formatAbsoluteFr(iso: string | number | Date): string {
+  const d = typeof iso === 'string' || typeof iso === 'number' ? new Date(iso) : iso;
+  if (!d || isNaN(d.getTime())) return '';
+  // Exemple: 9 sept. 2025
+  return new Intl.DateTimeFormat('fr-CA', { day: 'numeric', month: 'short', year: 'numeric' }).format(d);
+}
+
+export function formatNumberFr(n: number): string {
+  return new Intl.NumberFormat('fr-CA').format(n || 0);
+}