Retrieve session timeout from Salesforce via Metadata API in Node.js

sessionTimeout.js

var jsforce = require('jsforce');
var unzip = require('unzip');
var xml2js = require('xml2js');

var sessionTimeoutSeconds = {
  FifteenMinutes : 900,
  ThirtyMinutes : 1800,
  SixtyMinutes : 3600,
  TwoHours : 7200,
  FourHours : 14400,
  EightHours : 28800,
  TwelveHours : 43200
};

var conn = new jsforce.Connection({
  oauth2 : {
    clientId : process.env.CLIENT_ID,
    clientSecret : process.env.CLIENT_Secret
  }
});

conn.login(process.env.USERNAME, process.env.PASSWORD, function(err, userInfo) {
  if (err) { return console.error(err); }

  console.log("Authenticated as "+process.env.USERNAME);

  // Retrive the zipped metadata resource
  conn.metadata.retrieve({ 
    apiVersion: '34.0',
    singlePackage: false,
    unpackaged: {
      types : {
        members: 'Security',
        name: 'Settings'
      },
      version : '34.0'
  }}).stream()
    // Unzip it
    .pipe(unzip.Parse())
    .on('entry', function (entry) {
      // Find the security settings
      if (entry.path === "unpackaged/settings/Security.settings") {
        var settings = '';
        entry.on('data', function(chunk) {
          settings += chunk;
        });
        entry.on('end', function() {
          // Parse the XML and extract the session timeout
          xml2js.parseString(settings, function (err, result) {
            var sessionTimeout = result.SecuritySettings.sessionSettings[0].sessionTimeout[0];
            console.log(sessionTimeoutSeconds[sessionTimeout]);
          });
        });
      } else {
        entry.autodrain();
      }
    });
});