PineconeStore: NullCannot read properties of undefined (reading 'toString')

Checked other resources

[X] I added a very descriptive title to this issue.
[X] I searched the LangChain.js documentation with the integrated search.
[X] I used the GitHub search to find a similar question and didn't find it.
[X] I am sure that this is a bug in LangChain.js rather than my code.
[X] The bug is not resolved by updating to the latest stable version of LangChain (or the specific integration package).

Example Code

/* eslint-disable @typescript-eslint/no-explicit-any */
import { expect, jest, test } from "@jest/globals";
import { FakeEmbeddings } from "@langchain/core/utils/testing";
import { PineconeStore } from "../vectorstores.js";

describe("PineconeStore with null pageContent", () => {
  it("should handle null pageContent correctly in _formatMatches", async () => {
    const mockQueryResponse = {
      matches: [
        {
          id: "1",
          score: 0.9,
          metadata: { textKey: null, otherKey: "value" },
        },
      ],
    };

    const client = {
      namespace: jest.fn<any>().mockReturnValue({
        query: jest.fn<any>().mockResolvedValue(mockQueryResponse),
      }),
    };
    const embeddings = new FakeEmbeddings();

    const store = new PineconeStore(embeddings, {
      pineconeIndex: client as any,
    });

    const results = await store.similaritySearchVectorWithScore([], 0);
    expect(results[0][0].pageContent).toEqual("");
  });
});

Error Message and Stack Trace (if applicable)

TypeError: Cannot read properties of undefined (reading 'toString')

  426 |           new Document({
  427 |             id,
> 428 |             pageContent: pageContent.toString(),
      |                                      ^
  429 |             metadata,
  430 |           }),
  431 |           score,

  at PineconeStore.toString [as _formatMatches] (src/vectorstores.ts:428:38)
  at PineconeStore._formatMatches [as similaritySearchVectorWithScore] (src/vectorstores.ts:453:26)
  at Object.<anonymous> (src/tests/vectorstores.test.ts:145:21)

Description

The current version of the pinecone vector store assumes a property named pageContent will be set on each record. This was not previously required when ingesting content.

System Info

└─ langchain@workspace:langchain ├─ Instances: 1 ├─ Version: 0.3.2 │ └─ Dependencies ├─ @faker-js/faker@npm:^7.6.0 → npm:7.6.0 ├─ @jest/globals@npm:^29.5.0 → npm:29.5.0 ├─ @langchain/core@workspace: → workspace:langchain-core ├─ @langchain/scripts@>=0.1.0 <0.2.0 → workspace:libs/langchain-scripts ├─ @tsconfig/recommended@npm:^1.0.2 → npm:1.0.2 ├─ @types/handlebars@npm:^4.1.0 → npm:4.1.0 ├─ @types/html-to-text@npm:^9 → npm:9.0.0 ├─ @types/js-yaml@npm:^4 → npm:4.0.5 ├─ @types/jsdom@npm:^21.1.1 → npm:21.1.1 ├─ @types/uuid@npm:^9 → npm:9.0.1 ├─ @types/ws@npm:^8 → npm:8.5.8 ├─ axios@npm:^0.26.0 → npm:0.26.1 ├─ cheerio@npm:1.0.0-rc.12 → npm:1.0.0-rc.12 ├─ dotenv@npm:^16.0.3 → npm:16.0.3 ├─ dpdm@patch:dpdm@npm%3A3.12.0#./.yarn/patches/dpdm-npm-3.12.0-0dfdd8e3b8.patch::locator=langchainjs%40workspace%3A. → patch:dpdm@npm%3A3.12.0#./.yarn/patches/dpdm-npm-3.12.0-0dfdd8e3b8.patch::version=3.12.0&hash=2406a8&locator=langchainjs%40workspace%3A. ├─ eslint-plugin-no-instanceof@npm:^1.0.1 → npm:1.0.1 ├─ eslint@npm:^8.33.0 → npm:8.35.0 ├─ handlebars@npm:^4.7.8 → npm:4.7.8 ├─ jest-environment-node@npm:^29.6.4 → npm:29.6.4 ├─ js-tiktoken@npm:^1.0.12 → npm:1.0.12 ├─ js-yaml@npm:^4.1.0 → npm:4.1.0 ├─ jsonpointer@npm:^5.0.1 → npm:5.0.1 ├─ openai@npm:^4.41.1 → npm:4.42.0 ├─ openapi-types@npm:^12.1.3 → npm:12.1.3 ├─ p-retry@npm:4 → npm:4.6.2 ├─ peggy@npm:^3.0.2 → npm:3.0.2 ├─ prettier@npm:^2.8.3 → npm:2.8.4 ├─ release-it@npm:^17.6.0 → npm:17.6.0 ├─ rimraf@npm:^5.0.1 → npm:5.0.1 ├─ rollup@npm:^3.19.1 → npm:3.19.1 ├─ typescript@patch:typescript@~5.1.6#~builtin<compat/typescript> → patch:typescript@npm%3A5.1.6#~builtin<compat/typescript>::version=5.1.6&hash=77c9e2 ├─ uuid@npm:^10.0.0 → npm:10.0.0 ├─ wikipedia@npm:^2.1.2 → npm:2.1.2 ├─ yaml@npm:^2.2.1 → npm:2.2.1 ├─ zod@npm:3.23.8 → npm:3.23.8 ├─ @langchain/anthropic@workspace: → workspace:libs/langchain-anthropic [773c0] ├─ @langchain/aws@workspace: → workspace:libs/langchain-aws [773c0] ├─ @langchain/cohere@workspace: → workspace:libs/langchain-cohere [773c0] ├─ @langchain/google-genai@workspace: → workspace:libs/langchain-google-genai [773c0] ├─ @langchain/google-vertexai@workspace: → workspace:libs/langchain-google-vertexai [773c0] ├─ @langchain/groq@workspace: → workspace:libs/langchain-groq [773c0] ├─ @langchain/mistralai@workspace: → workspace:libs/langchain-mistralai [773c0] ├─ @langchain/ollama@workspace: → workspace:libs/langchain-ollama [773c0] ├─ @langchain/openai@workspace: → workspace:libs/langchain-openai [773c0] ├─ @langchain/textsplitters@workspace:* → workspace:libs/langchain-textsplitters [773c0] ├─ @swc/core@npm:^1.3.90 → npm:1.3.90 [6dbfd] ├─ @swc/jest@npm:^0.2.29 → npm:0.2.29 [6dbfd] ├─ @typescript-eslint/eslint-plugin@npm:^5.58.0 → npm:5.58.0 [6d556] ├─ @typescript-eslint/parser@npm:^5.58.0 → npm:5.58.0 [6d556] ├─ eslint-config-airbnb-base@npm:^15.0.0 → npm:15.0.0 [6d556] ├─ eslint-config-prettier@npm:^8.6.0 → npm:8.7.0 [6dbfd] ├─ eslint-plugin-import@npm:^2.27.5 → npm:2.27.5 [6d556] ├─ eslint-plugin-jest@npm:^27.6.0 → npm:27.6.0 [6d556] ├─ eslint-plugin-prettier@npm:^4.2.1 → npm:4.2.1 [6dbfd] ├─ jest@npm:^29.5.0 → npm:29.7.0 [6dbfd] ├─ langsmith@npm:^0.1.56 → npm:0.1.56 [0b9fc] ├─ ts-jest@npm:^29.1.0 → npm:29.1.0 [221f6] ├─ typeorm@npm:^0.3.20 → npm:0.3.20 [3a972] └─ zod-to-json-schema@npm:^3.22.3 → npm:3.22.3 [221f6]

langchain-ai / langchainjs