Streaming Connection

streamingtest.js

"use strict";
var ews = require("ews-javascript-api");
var credentials = require("../credentials");
ews.EwsLogging.DebugLogEnabled = false;
var exch = new ews.ExchangeService(ews.ExchangeVersion.Exchange2013);
exch.Credentials = new ews.ExchangeCredentials(credentials.userName, credentials.password);
exch.Url = new ews.Uri("https://outlook.office365.com/Ews/Exchange.asmx");
exch.SubscribeToStreamingNotifications([new ews.FolderId(ews.WellKnownFolderName.Inbox)], ews.EventType.NewMail, ews.EventType.Created, ews.EventType.Deleted, ews.EventType.Modified, ews.EventType.Moved, ews.EventType.Copied, ews.EventType.FreeBusyChanged)
    .then(function (streamingSubscription) {
        var connection = new ews.StreamingSubscriptionConnection(exch, 1);
        console.log("subscribing....: ");
        connection.AddSubscription(streamingSubscription);
        connection.OnNotificationEvent.push(function (obj, notificationArgs) {
            console.log("notification received: ");
            ews.EwsLogging.Log(obj, true, true);
            // EwsLogging.Log(notificationArgs, true, true);
        });
        connection.OnDisconnect.push(function (connection, subscriptionErrorEventArgsInstance) {
            console.log("disconnecting...");
            ews.EwsLogging.Log(subscriptionErrorEventArgsInstance, true, true);
            //access subscriptionErrorEventArgsInstance
            //connection.Open();
        });
        connection.Open();
    }, function (err) {
        console.log("ERROR: ---------------  ");
        console.log(err);
    });

streamingtest.ts

import {
    EwsLogging,
    ExchangeService,
    ExchangeVersion,
    ExchangeCredentials,
    Uri,
    FolderId,
    EventType,
    WellKnownFolderName,
    StreamingSubscriptionConnection,
} from "ews-javascript-api";

import credentials = require("../credentials");

EwsLogging.DebugLogEnabled = false;
var exch = new ExchangeService(ExchangeVersion.Exchange2013);
exch.Credentials = new ExchangeCredentials(credentials.userName, credentials.password);
exch.Url = new Uri("https://outlook.office365.com/Ews/Exchange.asmx");

exch.SubscribeToStreamingNotifications(
    [new FolderId(WellKnownFolderName.Inbox)],
    EventType.NewMail,
    EventType.Created,
    EventType.Deleted,
    EventType.Modified,
    EventType.Moved,
    EventType.Copied,
    EventType.FreeBusyChanged)
    .then((streamingSubscription) => {
        let connection = new StreamingSubscriptionConnection(exch, 1);
        console.log("subscribing....: ");
        connection.AddSubscription(streamingSubscription);
        connection.OnNotificationEvent.push((obj, notificationArgs) => {
            console.log("notification received: ")
            EwsLogging.Log(obj, true, true);
            // EwsLogging.Log(notificationArgs, true, true);
        });
        connection.OnDisconnect.push((connection, subscriptionErrorEventArgsInstance) => {
            console.log("disconnecting...");
            EwsLogging.Log(subscriptionErrorEventArgsInstance, true, true);
            //access subscriptionErrorEventArgsInstance
            //connection.Open();
        });

        connection.Open();
    }, (err) => {
        console.log("ERROR: ---------------  ");
        console.log(err);
    });

I am using the javascript version in Node.js. It connects to the Exchange server and runs through the set-up code without an errors. The issue is that it never receives Inbox notifications. When the connection time expires the onDisconnect is called and it disconnects without errors.
I cannot figure out why it never receives NotificationEvents. Is there a configuration on the Exchange server that needs to be set in order for the server to send notifications?