Maneira imutável de excluir uma chave de um objeto

/* Returns object without the specified property
 * Example: Cal.query = removeKey(Cal.query, 'AppointmentType');
 */
const removeKey = (obj, propToDelete) => {
  const { [propToDelete]: deleted, ...objectWithoutDeletedProp } = obj;  
  return objectWithoutDeletedProp;
};