Could not import faiss-node (NextJS) when loading from python
Problem
Hi, I know this is a duplicate of: https://github.com/langchain-ai/langchainjs/issues/2107 However, in that issue it says that this has been resolved. While I'm on the latest release: 0.1.2 Which should have the fix for this available here: https://github.com/langchain-ai/langchainjs/pull/2178 My issue is the following: https://github.com/langchain-ai/langchainjs/issues/2107#issuecomment-1891106038 For reference, I'll post it below: Hi there, I'm getting the same type of error message in my console when I try to: [code block] knowledge is a folder in the root folder that includes 2 files: [code block] I am using the following to see whether my API route in nextjs can reach the files: [code block] this logs the actual filenames, so I know they're there... I'm getting the following error message in my console: [code block] I'm running this on windows with [code block] I've already tried installing the package, but I have no clue why my nextjs isn't importing the files... My node version is 20.10.0 Is there anything I can do to get this issue sorted? It says read properties of undefined (reading 'indexOf') This to me indicates it can not read the ./knowledge folder with files for some reason. But I haven't been able to figure out why yet. I could be totally wrong here though.
Error Output
error message in my console when I try to:
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1 Fix
Fix faiss-node Import Issue in NextJS
The error 'Cannot read properties of undefined (reading 'indexOf')' typically indicates that the code is trying to access a property of an object that is not defined. In this case, it suggests that the path to the './knowledge' folder or the files within it may not be correctly resolved in the Next.js environment, especially on Windows. This could be due to case sensitivity issues, incorrect relative paths, or issues with how modules are imported.
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- 1
Verify File Structure
Ensure that the './knowledge' folder and its files are correctly placed in the root directory of your Next.js project. Check for any typos in folder or file names.
bashls -l ./knowledge - 2
Check Import Paths
Review the import statements in your Next.js API route to ensure that they correctly reference the './knowledge' folder. Use absolute paths if necessary.
typescriptimport { yourFunction } from '../knowledge/yourFile'; - 3
Update Node.js Version
Ensure that you are using a compatible version of Node.js. While you are on version 20.10.0, consider downgrading to a stable LTS version like 18.x.x to check for compatibility issues.
bashnvm install 18 && nvm use 18 - 4
Install Missing Dependencies
Run the following command to ensure that all necessary dependencies, including faiss-node, are correctly installed. This may resolve issues related to missing modules.
bashnpm install faiss-node - 5
Check for Case Sensitivity
On Windows, file paths are case-insensitive, but this can lead to issues when deploying to environments that are case-sensitive. Ensure that your code references the correct casing for file and folder names.
typescriptconsole.log('Knowledge folder:', fs.readdirSync('./knowledge'));
Validation
To confirm the fix worked, restart your Next.js server and check the console for any errors. If the import works correctly, you should see no error messages related to the './knowledge' folder, and the expected functionality should be restored.
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Environment
Submitted by
Alex Chen
2450 rep