import { clsx, type ClassValue } from "clsx";

export function cn(...inputs: ClassValue[]) {
  return clsx(inputs);
}

export function calcAge(birthDate?: string): number | null {
  if (!birthDate) return null;
  const b = new Date(birthDate);
  if (Number.isNaN(b.getTime())) return null;
  const now = new Date();
  let age = now.getFullYear() - b.getFullYear();
  const m = now.getMonth() - b.getMonth();
  if (m < 0 || (m === 0 && now.getDate() < b.getDate())) age--;
  return age;
}