Usingconstructor pattern in Node https://app.pluralsight.com/player?course=javascript-practical-design-patterns&author=jonathan-mills&name=javascript-practical-design-patterns-m3&clip=5&mode=live

mainConstructorPattern.js

var Task = require('./taskConstructorPattern');

var task1 = new Task('create a demo for constructors');
var task2 = new Task('create a demo for modules');
var task3 = new Task('create a demo for singletons');
var task4 = new Task('create a demo for prototypes');

task1.complete();
task2.save();
task3.save();
task4.save();

taskConstructorPattern.js

var Task = function(name){
	this.name=name;
	this.completed=false;
}

Task.prototype.complete = function () {
	console.log('completing task: ' + this.name);
	this.completed=true;	
};

Task.prototype.save = function () {
	console.log('saving Task: ' + this.name);
};

module.exports = Task;

taskES6.js

'use strict';

class Task {

	constructor(name){
		this.name=name;
		this.completed=false;
	}

	complete() {
		console.log('completing task: ' + this.name);
		this.completed=true;	
	};

	save() {
		console.log('saving Task: ' + this.name);
	};
}

var task1 = new Task('create a demo for constructors');
var task2 = new Task('create a demo for modules');
var task3 = new Task('create a demo for singletons');
var task4 = new Task('create a demo for prototypes');

task1.complete();
task2.save();
task3.save();
task4.save();