refont back express

backend/config/db.js

@@ -0,0 +1,13 @@
+import mariadb from 'mariadb';
+import dotenv from 'dotenv';
+
+dotenv.config();
+
+const pool = mariadb.createPool({
+    host: process.env.DB_HOST,
+    user: process.env.DB_USER,
+    password: process.env.DB_PASSWORD,
+    database: process.env.DB_DATABASE
+});
+
+export default pool;