modularise :move sql connection to a module

nusmoney_backend/connection.js

@@ -0,0 +1,20 @@
+const mysql = require("mysql");
+
+parameters = {
+  host: "localhost",
+  user: "root",
+  password: "7572137",
+  database: "nusbank",
+  multipleStatements: true,
+};
+
+let connection = mysql.createConnection(parameters);
+connection.connect((error) => {
+  if (error){
+      console.log(error);
+  } else {
+      console.log("Connection was successfull");
+  }
+});
+
+module.exports = connection;

nusmoney_backend/routes/accounts.js

@@ -1,23 +1,6 @@
-const mysql = require("mysql");
 const express = require('express');
 const router = express.Router();
-
-parameters = {
-  host: "localhost",
-  user: "root",
-  password: "7572137",
-  database: "nusbank",
-  multipleStatements: true,
-};
-
-let connection = mysql.createConnection(parameters);
-connection.connect((error) => {
-  if (error){
-      console.log(error);
-  } else {
-      console.log("Connection was successfull");
-  }
-});
+const connection = require("../connection");
 
 /* GET users listing. */
 /* router.get('/', function(req, res, next) {

nusmoney_backend/routes/users.js

@@ -1,23 +1,6 @@
-const mysql = require("mysql");
 const express = require('express');
 const router = express.Router();
-
-parameters = {
-  host: "localhost",
-  user: "root",
-  password: "7572137",
-  database: "nusbank",
-  multipleStatements: true,
-};
-
-let connection = mysql.createConnection(parameters);
-connection.connect((error) => {
-  if (error){
-      console.log(error);
-  } else {
-      console.log("Connection was successfull");
-  }
-});
+const connection = require("../connection");
 
 /* GET users listing. */
 /* router.get('/', function(req, res, next) {