function groupBy(items: Record<string, any>[], key: string): Record<string, Record<string, any>[]> {
  // Tu codigo aqui
  if (items.length === 0) return {};

  const groupResult = new Map<string, Record<string, any>[]>();

  for (const item of items) {
    groupResult.set(item[key], [...groupResult.get(item[key]) || [], item])
  }


  return Object.fromEntries(groupResult);
}

// No modificar: necesario para evaluar el resultado.
export { groupBy };