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Trouble connecting to local mongo db since updating to mongoose 5.x

I've checked around Stack and the Mongoose docs for this, but I can't seem to get it right. As implied in the title everything was fine until i upgraded the packages for mongoose and connect-mongo.
Here's my database.js:
var mongoose = require('mongoose');
var mongodbUri = require('mongodb-uri');
function encodeMongoURI (urlString) {
if (urlString) {
var parsed = mongodbUri.parse(urlString)
urlString = mongodbUri.format(parsed);
}
return urlString;
}
mongoose.connect(encodeMongoURI(process.env.MONGODB_URI) || 'mongodb://localhost:27017/goGradesDB',//specifies goGradesDB as the db to use locally
{
useNewUrlParser: true,
useUnifiedTopology: true,
useFindAndModify: false,
useCreateIndex: true,
}).catch(error => handleError(error));
var db = mongoose.connection;
db.on('error', console.error.bind(console, 'MongoDB connection error:'));
module.exports = db;
After looking over the docs in mongoose and searching this site I've tried the following:
installed the mongodb-uri package to parse the uri (although I'm not sure if that's needed for the local db. I can't get onto my heroku db either, but that's something I'm working with support on.
added the "useNewURLParser", etc. tag.
added the port number into the local db address
added the catch onto the end of mongoose.connect
Despite this I keep getting the following error output in my terminal and the db times out whenever I try to login to the app. Here's the output:
"The server is running on port 3000!
(node:71951) UnhandledPromiseRejectionWarning: MongoParseError: URI malformed, cannot be parsed"
and later,
"(node:71951) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 2)
(node:71951) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code."
Any insight would be much appreciated. Thank you!

'Self signed certificate' error during query the Heroku hosted Postgres database from the Node.js application

My Node.js app is able to work with local Postgres database via npm pg module.
I can connect to the Heroku hosted Postgres database (free Hobby Dev plan) via command line with heroku pg:psql command as well.
But when my Node.js app is trying to query to Heroku hosted Postgres database I am receiving an self signed certificate error.
Here is the output with self signed certificate error:
(node:2100) UnhandledPromiseRejectionWarning: Error: self signed certificate
at TLSSocket.onConnectSecure (_tls_wrap.js:1051:34)
at TLSSocket.emit (events.js:189:13)
at TLSSocket._finishInit (_tls_wrap.js:633:8)
(node:2100) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)
(node:2100) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
D:\MY\DEV\PROJECTS\AdsSubscribeBot\test.js:57
if (err) throw err;
^
Error: Connection terminated unexpectedly
at Connection.con.once (D:\MY\DEV\PROJECTS\AdsSubscribeBot\node_modules\pg\lib\client.js:264:9)
at Object.onceWrapper (events.js:277:13)
at Connection.emit (events.js:189:13)
at Socket.<anonymous> (D:\MY\DEV\PROJECTS\AdsSubscribeBot\node_modules\pg\lib\connection.js:76:10)
at Socket.emit (events.js:194:15)
at TCP._handle.close (net.js:597:12)
Simpliest way to reproduce this error is to try use the sample code to connecting in Node.js from Heroku devcenter:
https://devcenter.heroku.com/articles/heroku-postgresql#connecting-in-node-js
Here is the sample of the code that causes self signed certificate error:
const connectionString = 'postgres://USERNAME:PASSWORD#HOST:PORT/DB_NAME';
const { Client } = require('pg');
const client = new Client({
connectionString: connectionString,
ssl: true
});
client.connect();
client.query('SELECT * FROM users;', (err, res) => {
if (err) throw err;
for (let row of res.rows) {
console.log(JSON.stringify(row));
}
client.end();
});
Maybe someone has faced the same issue and know the way how to solve it.
Thanks in advance for any help.

Check you pg config. It sounds like you are using pg 8 which deprecates
implicit disabling of certificate verification (as you have in your config where ssl is set to true but no ssl configuration is provided). Specify rejectUnauthorized: true to require a valid CA or rejectUnauthorized: false to explicitly opt out of MITM protection.
You can do so where you set up your pg config as follows
const client = new Client({
connectionString: connectionString,
ssl: { rejectUnauthorized: false }
})

If anyone is still seeing issues with this after appending the SSL object to the Client object and they are using a connection string. Make sure that you don't have an ssl parameter in the connection string. If you are working with Digital Ocean this parameter is included in the generated connection string.
This is how Digital Ocean formats their connection strings by default
postgres://USERNAME:PASSWORD#HOST:PORT/DB_NAME:25060/defaultdb?&sslmode=require

To get this to work, I had to add:
ssl: { rejectUnauthorized: false }
but also add this to the environment:
NODE_TLS_REJECT_UNAUTHORIZED=0

Below is a variation of the accepted answer using Knex.js. Tested on Heroku.
const parse = require('pg-connection-string').parse;
const pgconfig = parse('your-pg-connection-string');
pgconfig.ssl = { rejectUnauthorized: false };
const knex = Knex({
client: 'pg',
connection: pgconfig,
});

Thanks to #samkhan27. I just added ssl: { rejectUnauthorized: false }
My full code:
const db = new Sequelize(
process.env.DATABASE_URL ||
`postgres://postgres:w2w2#localhost:5432/${databaseName}`,
{
logging: false,
ssl: { rejectUnauthorized: false } //solved the problem with self signed sertificate
}
)

Cannot connect to MySQL database with Node.js

My app has to connect to a mysql database but i am stuck just in that moment i cant connect it, im using a method that transforms callbacks code to promise code thats the reason i need to use async and await also the man of the tutorial doesnt have any error i guess because he has diferent terms on the keys.js, he is on linux, root user and also he has a password, things that i dont have. I really need hel thank you.
This is the code that is giving problems:
const express= require('express');
const router= express.Router();
const pool = require('../database');
router.get('/add', (req,res) =>{
res.render('casas/add');
});
router.post('/add', async (req,res) => {
const {titulo, precio, direccion, numhab, superficie} = req.body;
const nuevoPiso={
titulo,
precio,
direccion,
numhab,
superficie
};
await pool.query('INSERT INTO PISOS set ?', [nuevoPiso]);
res.send('recibido');
});
module.exports=router;
The problem is on the await line because if I delete that and the async word it works perfectly but obviously without that I cant send the elements to the database. The error that gives me the terminal is this:
(node:9548) UnhandledPromiseRejectionWarning: Error: ER_ACCESS_DENIED_ERROR: Access denied for user 'Axell'#'localhost' (using password: NO)
at Handshake.Sequence._packetToError (C:\Users\Axell\Desktop\node-sql-app\node_modules\mysql\lib\protocol\sequences\Sequence.js:47:14)
at Handshake.ErrorPacket (C:\Users\Axell\Desktop\node-sql-app\node_modules\mysql\lib\protocol\sequences\Handshake.js:123:18)
at Protocol._parsePacket (C:\Users\Axell\Desktop\node-sql-app\node_modules\mysql\lib\protocol\Protocol.js:291:23)
at Parser._parsePacket (C:\Users\Axell\Desktop\node-sql-app\node_modules\mysql\lib\protocol\Parser.js:433:10)
at Parser.write (C:\Users\Axell\Desktop\node-sql-app\node_modules\mysql\lib\protocol\Parser.js:43:10)
at Protocol.write (C:\Users\Axell\Desktop\node-sql-app\node_modules\mysql\lib\protocol\Protocol.js:38:16)
at Socket.<anonymous> (C:\Users\Axell\Desktop\node-sql-app\node_modules\mysql\lib\Connection.js:88:28)
at Socket.<anonymous> (C:\Users\Axell\Desktop\node-sql-app\node_modules\mysql\lib\Connection.js:526:10)
at Socket.emit (events.js:311:20)
at addChunk (_stream_readable.js:294:12)
--------------------
at Protocol._enqueue (C:\Users\Axell\Desktop\node-sql-app\node_modules\mysql\lib\protocol\Protocol.js:144:48)
at Protocol.handshake (C:\Users\Axell\Desktop\node-sql-app\node_modules\mysql\lib\protocol\Protocol.js:51:23)
at PoolConnection.connect (C:\Users\Axell\Desktop\node-sql-app\node_modules\mysql\lib\Connection.js:116:18)
at Pool.getConnection (C:\Users\Axell\Desktop\node-sql-app\node_modules\mysql\lib\Pool.js:48:16)
at Pool.query (C:\Users\Axell\Desktop\node-sql-app\node_modules\mysql\lib\Pool.js:202:8)
at internal/util.js:297:30
at new Promise (<anonymous>)
at Pool.query (internal/util.js:296:12)
at C:\Users\Axell\Desktop\node-sql-app\src\routes\casas.js:20:15
at Layer.handle [as handle_request] (C:\Users\Axell\Desktop\node-sql-app\node_modules\express\lib\router\layer.js:95:5)
(node:9548) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This
error originated either by throwing inside of an async function without a catch
block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:9548) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
POST /casas/add - - ms - -
(node:9548) UnhandledPromiseRejectionWarning: Error: ER_ACCESS_DENIED_ERROR: Access denied for user 'Axell'#'localhost' (using password: NO)
at Handshake.Sequence._packetToError (C:\Users\Axell\Desktop\node-sql-app\node_modules\mysql\lib\protocol\sequences\Sequence.js:47:14)
at Handshake.ErrorPacket (C:\Users\Axell\Desktop\node-sql-app\node_modules\mysql\lib\protocol\sequences\Handshake.js:123:18)
at Protocol._parsePacket (C:\Users\Axell\Desktop\node-sql-app\node_modules\mysql\lib\protocol\Protocol.js:291:23)
at Parser._parsePacket (C:\Users\Axell\Desktop\node-sql-app\node_modules\mysql\lib\protocol\Parser.js:433:10)
at Parser.write (C:\Users\Axell\Desktop\node-sql-app\node_modules\mysql\lib\protocol\Parser.js:43:10)
at Protocol.write (C:\Users\Axell\Desktop\node-sql-app\node_modules\mysql\lib\protocol\Protocol.js:38:16)
at Socket.<anonymous> (C:\Users\Axell\Desktop\node-sql-app\node_modules\mysql\lib\Connection.js:88:28)
at Socket.<anonymous> (C:\Users\Axell\Desktop\node-sql-app\node_modules\mysql\lib\Connection.js:526:10)
at Socket.emit (events.js:311:20)
at addChunk (_stream_readable.js:294:12)
--------------------
at Protocol._enqueue (C:\Users\Axell\Desktop\node-sql-app\node_modules\mysql\lib\protocol\Protocol.js:144:48)
at Protocol.handshake (C:\Users\Axell\Desktop\node-sql-app\node_modules\mysql\lib\protocol\Protocol.js:51:23)
at PoolConnection.connect (C:\Users\Axell\Desktop\node-sql-app\node_modules\mysql\lib\Connection.js:116:18)
at Pool.getConnection (C:\Users\Axell\Desktop\node-sql-app\node_modules\mysql\lib\Pool.js:48:16)
at Pool.query (C:\Users\Axell\Desktop\node-sql-app\node_modules\mysql\lib\Pool.js:202:8)
at internal/util.js:297:30
at new Promise (<anonymous>)
at Pool.query (internal/util.js:296:12)
at C:\Users\Axell\Desktop\node-sql-app\src\routes\casas.js:20:15
at Layer.handle [as handle_request] (C:\Users\Axell\Desktop\node-sql-app\node_modules\express\lib\router\layer.js:95:5)
(node:9548) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This
error originated either by throwing inside of an async function without a catch
block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 2)
POST /casas/add - - ms - -
I dont know where the error is maybe on my keys.js where i have this im on windows that is my username but I dont have a password:
module.exports={
database:{
host:'localhost',
user:'Axell',
database: 'casas',
password: ''
}
};
Here you can download the whole app it is unfinished because I cant continue due to this error: https://mega.nz/#!LAwgwAQK!OiuBqH4qxyT5CW2xRSUXdmhpfRyTtf3TobmYw-NqIic
Thank you so much!

The issue you are having is unrelated to async/await.
The credentials to MySQL incorrect. This could be an incorrect username, an incorrect password or perhaps you did not grant the Axell permission to access the casas database.
Given that you're on localhost, you can test this without localhost. Just try logging on with the same credentials with some other mysql tool (such as the mysql) tool, and you should get a similar error.

Connection with rest-API and SQL server or Azure

I have a problem with the connection to my database located in Azure, I was attempting to do a connection with a rest-API that I create, to a database that I have in Azure, this database I manage directly from SQL Server, and I can't make a connection with this.
I attempt to connect with another test database in SQL Server.
The rest-API ia create is in NodeJS
var sql = require('mssql');
var dbconfig = {
server:"Fernando\EQUIPO",
user: "<user>",
password: "<password>",
database: "<dbname>",
port: 1433,
option: {
encrypt: false
}
};
function getList() {
var record;
var conn = new sql.ConnectionPool(dbconfig);
conn.connect(function(err){
if(err) throw err;
var req = new sql.Request(conn);
req.query("select * from cliente", function(err, recordset) {
if(err) throw err;
else {
console.log(recordset);
record = recordset;
}
conn.close();
});
});
return record;
}
const { Router } = require('express');
const router = Router();
const _ = require('underscore');
const movies = require('../sample.json');
router.get('/', (req, res) => {
res.send(getList());
});
When I make a "get" to my local host http://localhost:3000/api/movies appears the following message in the console:
GET /api/movies 200 126.188 ms - -
(node:11868) UnhandledPromiseRejectionWarning: ConnectionError: Failed to connect to FernandoEQUIPO:1433 - getaddrinfo ENOTFOUND FernandoEQUIPO
at Connection.tedious.once.err (C:\Users\luisn\Desktop\rest-API\node_modules\mssql\lib\tedious\connection-pool.js:68:17)
at Object.onceWrapper (events.js:286:20)
at Connection.emit (events.js:198:13)
at Connection.socketError (C:\Users\luisn\Desktop\rest-API\node_modules\tedious\lib\connection.js:1258:12)
at _connector.Connector.execute (C:\Users\luisn\Desktop\rest-API\node_modules\tedious\lib\connection.js:1084:21)
at GetAddrInfoReqWrap._dns.default.lookup [as callback] (C:\Users\luisn\Desktop\rest-API\node_modules\tedious\lib\connector.js:152:16)
at GetAddrInfoReqWrap.onlookupall [as oncomplete] (dns.js:68:17)
(node:11868) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)
(node:11868) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

Connect to Azure SQL database:
Here's the example code connect to Azure SQL database with REST-API:
Note: the encrypt must be true.
You can get the server name from on Portal:
And you need to add the client IP address to the Azure SQL Server firewall settings:
Then you could connect to the Azure SQL database now. You can reference:Creating a Node.js REST API in Azure
Connect to SQL Server:
Your code is almost correct and need some change:
var sql = require('mssql');
var dbconfig = {
server:"localhost",
user: "<user>",
password: "<password>",
database: "<dbname>",
port: 1433,
option: {
encrypt: false
}
};
Like Abhishek Ranjan said, you should enter your server ip.
Hope this helps.

Welcome to StackOverflow.
ConnectionError: Failed to connect to FernandoEQUIPO:1433 - getaddrinfo ENOTFOUND FernandoEQUIPO
Your error states that it is unable to connect as it could not find a server at the given address.Make sure there is a server runninng and verify connection using some third party app.
Are you sure FernandoEQUIPO gets resolved to a proper hostname ?

Naming collision in react native app start

I'm using the out-of-the box react native framework to try to build a new app.
i used the following commands ind CMD (Windows 10).
node -v:
v8.12.0
npm -v:
6.4.1
mkdir react-native-workspace
cd react-native-workspace
npm install -g create-react-native-app
create-react-native-app Exercise2
cd Exercise2
npm start
ERROR 12:42 (node:15564) UnhandledPromiseRejectionWarning: Error: jest-haste-map: #providesModule naming collision: Duplicate module
name: my-new-project Paths:
C:\Users\wp_99\Dokumenter\react-native-workspace\Exercise2\package.json
collides with
C:\Users\wp_99\Documents\react-native-workspace\Exercise2\package.json
This error is caused by a #providesModule declaration with the same
name across two different files.
at setModule (C:\Users\wp_99\Documents\react-native-workspace\Exercise2\node_modules\metro\node_modules\jest-haste-map\build\index.js:462:17)
at workerReply (C:\Users\wp_99\Documents\react-native-workspace\Exercise2\node_modules\metro\node_modules\jest-haste-map\build\index.js:512:9)
at
at process._tickCallback (internal/process/next_tick.js:189:7) ERROR 12:42 (node:15564) UnhandledPromiseRejectionWarning: Unhandled
promise rejection. This error originated either by throwing inside of
an async function without a catch block, or by rejecting a promise
which was not handled with .catch(). (rejection id: 2) (node:15564)
[DEP0018] DeprecationWarning: Unhandled promise rejections are
deprecated. In the future, promise rejections that are not handled
will terminate the Node.js process with a non-zero exit code.

It's a bug in the metro-bundler. You should create rn-cli.config.js and add this configuration to it:
For react-native>=0.57
const blacklist = require('metro-config/src/defaults/blacklist');
module.exports = {
resolver:{
blacklistRE: blacklist([
/nodejs-assets\/.*/,
/android\/.*/,
/ios\/.*/
])
},
};
react-native < 0.57
const blacklist = require('metro/src/blacklist');
module.exports = {
getBlacklistRE: function() {
return blacklist([
/nodejs-assets\/.*/,
/android\/.*/,
/ios\/.*/
]);
},
};
You can read more here.

I've added the following to rn-cli.config.js
const blacklist = require('metro-config/src/defaults/blacklist');
module.exports = {
resolver: {
blacklistRE: blacklist([
/node_modules\/.*\/node_modules\/react-native\/.*/,
])
},
};