discovery model with lb4

[emazzu]

hi, I need to know, how can run model discovery and generate model.
In LB3, I made this script.

How can i do on LB 4 ????

'use strict';

console.log(process.argv.length);

if (process.argv.length != 3) {
console.log("No arguments, You have to add the table or view name. Example: node server/script/generateModel.js tableName");
return;
}

var modelName = process.argv[2];

var loopback = require('loopback');
var fs = require('fs');
var path = require('path');

var ds = loopback.createDataSource({
"connector": "mssql",
"host": "xx",
"port": 1433,
"database": "xx",
"username": "xx",
"password": "xx"

});

var destination = path.join('common', 'models', modelName); // build path

console.log("reading table/view: " + modelName);

// Discover and build models from INVENTORY table
ds.discoverSchema(modelName, { schema: "pbi" }, function (err, m) {

console.log(m);

if (err) throw err;

fs.writeFileSync(destination + '.json', JSON.stringify(m));    // save json con modelo

var origin = path.join('myScript', 'baseModel-rx.js');
console.log("reading file: " + origin);

var data_origin = String(fs.readFileSync(origin));                      // read modelo base
var data_destination = data_origin.replace(/modelName/g, m.name);       // reemplaza nombre de modelo por argumento
fs.writeFileSync(destination + '.js', data_destination);                // save modelo base deshabilitando apis de escritura

console.log('Model saved successful in ' + destination + ".json");
console.log('Model saved successful in ' + destination + ".js");
console.log('--');
console.log('Pasar el archivo ' + destination + ".json, por la herramienta https://jsonformatter.org/, para expandirlo y que sea mas claro.");
console.log('--');
console.log('Para que modelo quede operativo, agregar configuracion en server/model-config.json');
console.log('--');

process.exit(0);                                                        // exit

});