Stage after merging with project files

src/db/pool.js

@@ -0,0 +1,30 @@
+import * as mariadb from 'mariadb';
+
+import { env } from '../config/env.js';
+
+const pool = mariadb.createPool({
+  host: env.db.host,
+  port: env.db.port,
+  database: env.db.database,
+  user: env.db.user,
+  password: env.db.password,
+  connectionLimit: env.db.connectionLimit,
+  bigIntAsNumber: true
+});
+
+export async function query(sql, params = []) {
+  let connection;
+
+  try {
+    connection = await pool.getConnection();
+    return await connection.query(sql, params);
+  } finally {
+    if (connection) {
+      connection.release();
+    }
+  }
+}
+
+export async function closePool() {
+  await pool.end();
+}