From 5e0cdd6c2d7745f6042450768bf4e2697ce0609f Mon Sep 17 00:00:00 2001
From: Brace Sproul <braceasproul@gmail.com>
Date: Tue, 28 Nov 2023 15:49:16 -0800
Subject: [PATCH] Make undefined input optional

---
 langchain/src/vectorstores/weaviate.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/langchain/src/vectorstores/weaviate.ts b/langchain/src/vectorstores/weaviate.ts
index d3e6fa85841a..1bd1fba5a77a 100644
--- a/langchain/src/vectorstores/weaviate.ts
+++ b/langchain/src/vectorstores/weaviate.ts
@@ -346,7 +346,7 @@ export class WeaviateStore extends VectorStore {
   override async maxMarginalRelevanceSearch(
     query: string,
     options: MaxMarginalRelevanceSearchOptions<this["FilterType"]>,
-    _callbacks: undefined
+    _callbacks?: undefined
   ): Promise<Document[]> {
     const { k, fetchK = 20, lambda = 0.5, filter } = options;
     const queryEmbedding: number[] = await this.embeddings.embedQuery(query);