Nodejs Utililty Methods Day Add

Date.prototype.nextDay = function() {
  var currentDate = this.getDate();
    return new Date(this.setDate(currentDate + 1));
var date = new Date(); 
console.log(date);
console.log(date.nextDay());

Date.prototype.nextDay = function() {
    this.setTime(this.getTime() + 24*60*60*1000);
    return this;
};

Date.prototype.next = function() {
  var self = this;
  return { minute: function() {
    return self.add(1).minutes(); }};
};

Date.prototype.next = function() {
    return(new Date(this.getTime() + 24 * 60 * 60 * 1000));
};
Array.prototype.getArrayOf = function(key) {
    return this.map(function(obj) {
        return obj[key];
    });
};

function tomorrow(){
  var x = new Date();
  x.setDate(x.getDate() + 1);
  return x;

Date.prototype.tomorrow = function(pattern){
    return this.past(pattern,-1);