Failed to resolve import "langchain/vectorstores/memory" . Does the file exist?

[radiantone]

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Example Code

import { OpenAIEmbeddings } from "@langchain/openai";

const embeddings = new OpenAIEmbeddings();
import { MemoryVectorStore } from "langchain/vectorstores/memory";
const vectorStore = await MemoryVectorStore.fromTexts(
  ["Hello world", "Bye bye", "hello nice world"],
  [{ id: 2 }, { id: 1 }, { id: 3 }],
  embeddings
);

Description

10:03:16 AM [vite] Internal server error: Failed to resolve import "langchain/vectorstores/memory" .... Does the file exist?
Plugin: vite:import-analysis
File: /home/darren/git/elasticcode-ai/platform/ui/src/layouts/MainLayout.vue
7 | import { OpenAIEmbeddings } from "@langchain/openai";
8 | const embeddings = new OpenAIEmbeddings();
9 | import { MemoryVectorStore } from "langchain/vectorstores/memory";

System Info

$ node -v
v20.5.1
$ uname -a
Linux phoenix 6.6.10-76060610-generic #202401051437170908527722.04~31d73d8 SMP PREEMPT_DYNAMIC Wed F x86_64 x86_64 x86_64 GNU/Linux

[dosubot[bot]]

It looks like the import path for MemoryVectorStore in your code might not be accurate according to the LangChain JS repository structure. The correct import statement should reference the actual file location, which is likely different from what you've used. Try adjusting your import to match the structure of the LangChain repository, such as:

import { MemoryVectorStore } from "langchain/src/vectorstores/memory";

Ensure your project's vite.config.ts and tsconfig.json are properly set up for module resolution and TypeScript settings. This includes configuring Vite to correctly handle ES module syntax and setting up TypeScript to include the necessary files and directories.

Check that all dependencies, including ml-distance and @langchain/core, are installed and compatible with each other and with ES module syntax, as Vite expects.

If these steps don't resolve the issue, consider looking into similar issues in the LangChain JS repository, such as a closed issue that was resolved in a specific pull request, for potential solutions or clues.

Make sure all configurations and dependencies are correctly set up and aligned with the requirements of your project and the LangChain JS library.

Sources

• Import error when using in React-vite project
• langchain/src/vectorstores/memory.ts
• package.json

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