Infrastructure build to support third-party app integrations

backend/db/index.ts

@@ -0,0 +1,17 @@
+import pg from 'pg';
+import type { QueryResult, QueryResultRow } from 'pg';
+
+const pool = new pg.Pool({
+  connectionString: process.env.DATABASE_URL,
+});
+
+export const query = <R extends QueryResultRow = QueryResultRow>(
+  text: string,
+  params?: unknown[]
+): Promise<QueryResult<R>> => pool.query<R>(text, params);
+
+export const getPool = (): pg.Pool => pool;
+
+export const close = (): Promise<void> => pool.end();
+
+export default pool;