Trouble using the Moment module - parse-platform

Question

Here is some Parse cloud code I am having problem with:
var moment = require('moment');
Parse.Cloud.define
("myCloudFunction", function(request, response)
{
var now = moment();
var later = moment("2017-07-09T20:00:00");
var x = 7;
if (later.isAfter(now)) x = x-1;
else x = x+1;
console.log(x);
});
I get this error message when I run it:
Error: TypeError: Object Sun Jul 09 2017 20:00:00 GMT+0000 (UTC) has no method 'isAfter' at main.js:406:12 (Code: 141, Version: 1.2.18)
Of course I have simplified things to come to the point of my question.
What am I doing wrong?

Answer 1

The hosted version of moment.js file used by Cloud Code is stuck at version 1.7.2 and the isAfter method is 2.0+.
Download a new copy of moment.js and put it in your cloud/ folder, then require it like this:
var moment = require('cloud/moment.js');

Answer 2

The line var moment = require('moment'); needs to be outside the function as it defines a requirement for the whole file. I usually put all my require statements up the top of the file.
So your above code should look like this:
var moment = require('moment');
Parse.Cloud.define
("myCloudFunction", function(request, response)
{
var now = moment();
var later = moment("2017-07-09T20:00:00");
var x = 7;
if (later.isAfter(now)) x = x-1;
else x = x+1;
console.log(x);
});

Answer 3

It appears that some of the functions are no working even in the native moment.js supported by parse (moment v1.7.2)... while using add function it doesn't work... only when working with my downloaded version of moment (2.8.4)
See for yourselves with below code:
var moment = require('moment');
var moment2 = require('cloud/moment.js');
Parse.Cloud.define ("momentChecks", function(request, response)
{
var later = moment("2017-07-09T20:00:00");
var later2 = moment("2017-07-09T20:00:00");
var later3 = moment2("2017-07-09T20:00:00");
later.add(1, 'days').format("dddd, MMMM Do YYYY, h:mm:ss a");
later2.add(2, 'days').format("dddd, MMMM Do YYYY, h:mm:ss a");
later3.add(2, 'days').format("dddd, MMMM Do YYYY, h:mm:ss a");
var message = "\nlater: " + later.format() + "\nlater2: " + later2.format() + "\nlater3: " + later3.format();
console.log(message);
response.success(message);
});