Initial commit - Event Planner application

node_modules/kysely/dist/esm/dialect/postgres/postgres-adapter.js

@@ -0,0 +1,22 @@
+/// <reference types="./postgres-adapter.d.ts" />
+import { sql } from '../../raw-builder/sql.js';
+import { DialectAdapterBase } from '../dialect-adapter-base.js';
+// Random id for our transaction lock.
+const LOCK_ID = BigInt('3853314791062309107');
+export class PostgresAdapter extends DialectAdapterBase {
+    get supportsTransactionalDdl() {
+        return true;
+    }
+    get supportsReturning() {
+        return true;
+    }
+    async acquireMigrationLock(db, _opt) {
+        // Acquire a transaction level advisory lock.
+        await sql `select pg_advisory_xact_lock(${sql.lit(LOCK_ID)})`.execute(db);
+    }
+    async releaseMigrationLock(_db, _opt) {
+        // Nothing to do here. `pg_advisory_xact_lock` is automatically released at the
+        // end of the transaction and since `supportsTransactionalDdl` true, we know
+        // the `db` instance passed to acquireMigrationLock is actually a transaction.
+    }
+}