jsforce_connect.js

import jsforce from 'jsforce';
var conn = new jsforce.Connection({'loginUrl': 'salesForceURL'});
conn.login('username', 'password+securityToken', function(error, userInfo) {
  if (error) {
    return console.log(error);
  }

  conn.sobject('Account').find({}).execute(function(error, records) {
    if (error) {
      return console.log(error);
    }
    console.log(records);
  });