fix(ts-oss): register pgvector in VectorStoreFactory (#3367) (#4502)

docs/components/vectordbs/dbs/pgvector.mdx

@@ -48,7 +48,7 @@ const config = {
       password: '123',
       host: '127.0.0.1',
       port: 5432,
-      dbname: 'vector_store', // Optional, defaults to 'postgres'
+      dbname: 'vector_store', // Optional; TypeScript OSS defaults to `vector_store` when omitted
       diskann: false, // Optional, requires pgvectorscale extension
       hnsw: false, // Optional, for HNSW indexing
     },
@@ -85,6 +85,8 @@ Here are the parameters available for configuring pgvector:
 | `connection_string` | PostgreSQL connection string (overrides individual connection parameters) | `None` |
 | `connection_pool` | psycopg2 connection pool object (overrides connection string and individual parameters) | `None` |
 
+**Note (TypeScript OSS):** If you omit `dbname`, the TypeScript client uses the database name `vector_store`. Python defaults to `postgres` for `dbname`, as in the table above.
+
 **Note**: The connection parameters have the following priority:
 1. `connection_pool` (highest priority)
 2. `connection_string`

mem0-ts/src/oss/src/vector_stores/pgvector.ts

@@ -1,4 +1,4 @@
-import { Client, Pool } from "pg";
+import { Client } from "pg";
 import { VectorStore } from "./base";
 import { SearchFilters, VectorStoreConfig, VectorStoreResult } from "../types";
 
@@ -35,6 +35,7 @@ export class PGVector implements VectorStore {
       host: config.host,
       port: config.port,
     });
+    this.initialize().catch(console.error);
   }
 
   async initialize(): Promise<void> {

mem0-ts/src/oss/tests/factory.unit.test.ts

@@ -118,6 +118,11 @@ jest.mock("../src/vector_stores/azure_ai_search", () => ({
     .fn()
     .mockImplementation((config) => ({ type: "azure-ai-search", config })),
 }));
+jest.mock("../src/vector_stores/pgvector", () => ({
+  PGVector: jest
+    .fn()
+    .mockImplementation((config) => ({ type: "pgvector", config })),
+}));
 jest.mock("../src/storage/SupabaseHistoryManager", () => ({
   SupabaseHistoryManager: jest
     .fn()
@@ -236,6 +241,7 @@ describe("VectorStoreFactory", () => {
     ["langchain"],
     ["vectorize"],
     ["azure-ai-search"],
+    ["pgvector"],
   ])("creates vector store for provider '%s'", (provider) => {
     expect(() =>
       VectorStoreFactory.create(provider, dummyVSConfig),