Visual Studio 2008: Как установить шаблон объекта

import mongoose from 'mongoose';

mongoose.Promise = global.Promise;
mongoose.set('useFindAndModify', false);

// mentioning url for specific mongo database along with the port
let DB_URL = 'mongodb://localhost:27017/db_name';

// creating a connection for mongoose to act to specific db
var connection =  mongoose.createConnection(DB_URL,{ useNewUrlParser: true });

// if error occurs, then create connection or else connect directly
try {
  mongoose.connect(DB_URL, { useNewUrlParser: true });
} catch (err) {
  mongoose.createConnection(constants.DB_URL);
}

// consoling the success message if connection is opened or else displaying error if error is present
mongoose.connection
  .once('open', () => console.log('MongoDB Running'))
  .on('error', e => {
    throw e;
  });