module.exports = function formatDate(date) {
    var d = new Date(date),
      month = "" + (d.getMonth() + 1),
      day = "" + d.getDate(),
      year = d.getFullYear();
  
    if (month.length < 2) month = "0" + month;
    if (day.length < 2) day = "0" + day;
  
    return [year, month, day].join("-");
  };