loadscript.js

const qsocks = require('qsocks');

// Get a global reference
var global = qsocks.Connect();

global.then(function(global) {
    return global.createApp('This is my app3');
})
.then(function(reply) {
    // Establish a new connection so we don't pollute the current engine session.
    return qsocks.ConnectOpenApp({appname: reply.qAppId});
})
.then(function(conns) {
    // [global, app]
    var app = conns[1];
    
    // Load scripts in Qlik is just a string
    var myscript = "Characters:\r\nLoad Chr(RecNo()+Ord('A')-1) as Alpha, RecNo() as Num autogenerate 26;";
    
    // Get a empty script to get correct locale variables
    return app.getEmptyScript('Main').then(function(script) {
        return app.setScript(script + myscript)
    })
    // Reload
    .then(function() {
        return app.doReload()   
    })
    // Save
    .then(function() {
       return app.doSave()
    });
  
})
.then(function() {
    // Probably wanna clean up here and close websockets.
    console.log('Done')
})
.catch(function(err) {
    console.log(err) // Handle errors
})