Program in server actions cannot bundle the correct static file

const csvFilePath = path.join(process.cwd(), 'prices.csv');

export const priceTable = await readCSV(csvFilePath)

When I use process.cwd() to get a CSV file, if this part of code is in server actions, the bundler will not correctly bundle the target CSV file. In Vercel it will raise a file not found runtime error.

If this code in the normal page router api route or app router API route, it works fine.

I assume it is some issue of vercel nft https://github.com/vercel/nft . Anyone has some idea?

Vercel Staff

Hi , welcome to the Vercel Community!

Thanks for reaching out in the community. Let me try and recreate this issue.

Vercel Staff

Hi , I created this sample repository to see what could be going wrong and I was able to recreate the issue: https://sample-latest-nextjs.vercel.app/

Can you confirm this is the issue you are referring to?

Error from server action

Server action error logs

Vercel Staff

Hi , after digging in deeper and help from our team. I was able to solve this issue by using the outputFileTracingIncludes option to explicitly include the data directory:

import type { NextConfig } from "next";
 
const nextConfig: NextConfig = {
  /* config options here */
  outputFileTracingIncludes: {
    '/': ['./src/data/*']
  }
};

This should solve the issue for you as well.

hi, yes, it seems this is the issue i am referring to. Let me try your solution.

hi thanks this solved my problem. but it would be better to make this happen automatically if possible.

thank you very much

Vercel Staff

Hi , we've merged a fix for this issue.

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