ares/web/lib/format.ts

export function formatCurrency(n: number, currency = "USD"): string {
  return new Intl.NumberFormat("en-US", {
    style: "currency", currency,
    minimumFractionDigits: 2,
    maximumFractionDigits: 2,
  }).format(n);
}

export function formatPct(n: number, decimals = 1): string {
  return `${n >= 0 ? "+" : ""}${n.toFixed(decimals)}%`;
}

export function formatDate(iso: string): string {
  return new Date(iso).toLocaleString("en-US", {
    month: "short", day: "numeric",
    hour: "2-digit", minute: "2-digit",
  });
}

export function formatPrice(n: number, digits = 2): string {
  return n.toFixed(digits);
}