node, mysql connection test

+module.exporst = {
+  host     : 'localhost',
+  user     : 'root',
+  password : 'Dltgld55%%',
+  port     : 3306,
+  database : 'my_db'
+};
\ No newline at end of file

+const mysql = require('mysql');
+const option = require('./db_option');
+const connection = mysql.createConnection(option);
+
+connection.connect();
+
+connection.query('SELECT * FROM Persons', (err, rows, fields) => {
+    if (!err) {
+        console.log('The solution is :', rows);
+    }
+    else {
+        console.error('error: ', err);
+    }
+});
+
+connection.end();
\ No newline at end of file

+{
+  "name": "express-mysql",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "start": "node index"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "express": "4.17.0",
+    "mysql": "2.17.1"
+  }
+}

@@ -17,6 +17,7 @@
     "http-errors": "~1.6.2",
     "morgan": "~1.9.0",
     "mysql": "^2.16.0",
+    "pm2": "^3.5.0",
     "request": "^2.88.0",
     "socket.io": "^2.1.1"
   }