NodeJS＿node 3224エラー:useNewUrlar警告解決方法(7)

警告について Deprecation Warning:current URL string parser is deprecated、and will be removed in a future version.To use the new parser、pass option｛useNewUrlar Parser:true｝to MongoClint.co nnect.の正しい解決方法は以下の通りです.
 追加します.

var MongoClient = require('mongodb').MongoClient
var url = 'mongodb://localhost:27017/testdb'//      

module.exports = {
    getDB: function (callback) {
        MongoClient.connect(url, {useNewUrlParser:true},  function (err, db) {
            callback(db)   
        })
    }
}