Sequelize connection and logging issues - node.js

Question

I am trying to use Sequelize to connect with a SQL Server 2012 database. When my connection string was clearly wrong, I was seeing ECONN REFUSED messages and timeout. Now, I am not getting any response, despite logging on success and fail, per this code:
import * as Sequelize from 'sequelize';
-- connection string redacted
let seqConn = new Sequelize("mssql://**;Initial Catalog=**;Persist Security Info=True;Integrated Security=SSPI; User ID=**; Password=**")
seqConn
.authenticate()
.then(function(err) {
console.log('Connection has been established successfully.');
})
.catch(function (err) {
console.log('Unable to connect to the database:', err);
});
I was previously using the syntax:
let seqConn = new Sequelize("DB", "Username", "Password",
{
dialect: 'mssql',
dialectOptions: {
instanceName: 'dev'
},
host: '**'
};
But I couldn't find a setting for integrated security or other fancy SQL Server things.
Regardless, my current connection string isn't erroring. But also, it is not saying the connection was established.
I tried passing my seqConn to a model to use it to retrieve a model:
getModel(seqConn): void {
console.log("Getting");
var model = seqConn.define("dbo.Model", {
modelID: Sequelize.INTEGER,
modelNo: Sequelize.INTEGER,
modelName: Sequelize.STRING(50),
modelAge: Sequelize.DATE
});
seqConn.sync().then(function() {
model.findOne()
.then( function (modelRes){
console.log("got a result!?");
console.log(modelRes.get("modelName"));
})
.catch( function (error){
console.log("it didn't work :( ");
});
});
console.log('after getter');
return;
}
I'm not confident that this is the right way to use sequelize, and I'm still establishing my project structure, but for now I expect to either see a "got a result" or an error, but nothing is logging here from either the then() or the catch(). The before/after getter logs are logging fine.
I have considered that it takes a long time to connect, but my IT says that he saw my successful connection in our SQL logs, and previously I was getting timeouts in about 15,000 ms, I think.

Answer 1

The problem was solved by including another NPM module: `sequelize-msnodesqlv8'
And then the code to connect to Sequelize looked like:
var Sequelize = require('sequelize');
var seqConn = new Sequelize({
dialect: 'mssql',
dialectModulePath: 'sequelize-msnodesqlv8',
dialectOptions: {
connectionString: 'Driver={SQL Server Native Client 11.0};[REDACTED]'
}
});
seqConn
.authenticate()
.then(function(err) {
console.log('Connection has been established successfully.');
})
.catch(function (err) {
console.log('Unable to connect to the database:', err);
});