Conexão com banco e início de repository

backend/config/database.js

@@ -0,0 +1,19 @@
+import mysql from "mysql2/promise";
+import dotenv from "dotenv";
+
+dotenv.config();
+
+export const pool = mysql.createPool({
+    host : process.env.DB_HOST,
+    port : process.env.DB_PORT,
+    user: process.env.DB_USER,
+    database: process.env.DB_NAME,
+    password: process.env.DB_PASSWORD,
+    waitForConnections: true,
+    connectionLimit: 10
+});
+
+export async function query(sql, params = []){
+    const [rows] = await pool.execute(sql, params);
+    return rows;
+}