validate-date.js

function validateDate(y, m, d) {
  var month = m-1;
  var _date = new Date(y, month, d);

  if(isNaN(_date)) return false;
  if (_date.getFullYear() != y 
    || _date.getMonth() != month
    || _date.getDate() != d) {
    return false;
  }
  return _date;
}

export default validateDate;