// Connection    var username = 'myusername';    var password = 'mypass';    var jsforce = require('jsforce');    var conn = new jsforce.Connection({   // you can change loginUrl to connect to sandbox or prerelease env.   // loginUrl : 'https://test.salesforce.com'   });   conn.login(username, password, function(err, userInfo) {
if (err) { return console.error(err); }
// Now you can get the access token and instance URL information.
// Save them to establish connection next time.
console.log(conn.accessToken);
console.log(conn.instanceUrl);
// logged in user property
console.log("User ID: " + userInfo.id);
console.log("Org ID: " + userInfo.organizationId);
// ...   });

 // Metadata API   var fullNames = [ 'Account', 'Contact' ];   conn.metadata.read('CustomObject', fullNames, function(err, metadata)  {
 if (err)
 {
   console.error(err);
 }
 for (var i=0; i < metadata.length; i++)
 {
   var meta = metadata[i];
   console.log("Full Name: " + meta.fullName);
   console.log("Fields count: " + meta.fields.length);
   console.log("Sharing Model: " + meta.sharingModel);
 }   });    }