converted to proper npm sveltekit project

src/lib/server/db/index.ts

@@ -0,0 +1,27 @@
+// Postgres connection pool. Created lazily on first use so the module can be
+// imported during build/analysis without DATABASE_URL being present.
+import pg from 'pg';
+import { env } from '$env/dynamic/private';
+
+let pool: pg.Pool | null = null;
+
+function getPool(): pg.Pool {
+	if (pool) return pool;
+	const connectionString = env.DATABASE_URL;
+	if (!connectionString) {
+		// Fail loudly on first query rather than mysteriously later.
+		throw new Error(
+			'DATABASE_URL is not set. Copy .env.example to .env (or set it in docker-compose) and try again.'
+		);
+	}
+	pool = new pg.Pool({ connectionString });
+	return pool;
+}
+
+/** Small helper so call sites read as `query(sql, params)`. */
+export function query<T extends pg.QueryResultRow = pg.QueryResultRow>(
+	text: string,
+	params?: unknown[]
+): Promise<pg.QueryResult<T>> {
+	return getPool().query<T>(text, params);
+}