Update 2 files

- /lib/db.js
- /app.js

app.js

@@ -11,7 +11,7 @@ const cookieParser = require("cookie-parser");
 const logger = require("morgan");
 
 const flash = require("express-flash");
-const connection = require("./lib/db");
+const db = require("./lib/db");
 
 const indexRouter = require("./routes/index");
 const usersRouter = require("./routes/users");

lib/db.js

 var mysql = require("mysql");
-var connection = mysql.createConnection({
+var db = mysql.createConnection({
   host: process.env.DB_HOST,
   user: process.env.DB_USER,
   password: process.env.DB_PASS,
   database: process.env.DB_NAME
 });
 
-connection.connect((error) => {
+db.connect((error) => {
   if (!!error) {
     console.log(error);
   } else {
@@ -14,4 +14,4 @@ connection.connect((error) => {
   }
 });
 
-module.exports = connection;
+module.exports = db;