simply_understanding_promises.js

var Promise = require('bluebird');

function aSync() {
	return new Promise(function(resolve, reject) {
		setTimeout(function() {
			console.log('inside the aSync')
			resolve();
		}, 3000);
	})
}

aSync().then(function(data) {
	return new Promise(function(resolve, reject) {
		setTimeout(function() {
			console.log('inside then');
			resolve();
		}, 5000);
	})
}).then(function(data) {
	console.log('bye');
});