sf-auth.js

var jsforce = require('jsforce');
var username = "XXXXXXXXXXXXXXXXX";
var password = "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX";

function sfAuth() {
    return new Promise((resolve, reject) => {
        console.log("✔ Connecting to Salesforce");
        var conn = new jsforce.Connection({
            loginUrl: 'XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX'
        });
        conn.login(username, password, (e, userInfo) => {
            if (e) {
                console.log(e);
                reject(e);
            } else {
                console.log("✔ Connection successful");
                resolve(conn);
            }
        });
    })
}

module.exports = sfAuth;