Can't get absolute path of json file in data folder

[IroncladDev]

My folder structure looks something like this:

Root
| pages
...
| scripts
---| util.js
| Data
---| data.json
---| schemas.json
| public
...

Within scripts, there is a function that edits a JSON file

import editJsonFile from 'edit-json-file'
const DIRNAME = process.cwd()
//get the _absolute_ **absolute** path of data.json file
const data = editJsonFile(process.env.JSON_PATH || (DIRNAME + "/data/data.json"))

export function getJSON(){
  return data.get();
}

export function writeJSON(callback){
  let __data = callback(getJSON());
  let keys = Object.keys(__data);
  let values = Object.values(__data);
  for(var i = 0; i < keys.length; i++){
    data.set(keys[i], values[i]);
  }
  data.save();
  return getJSON();
}

The edit-json-file npm package needs the absolute path of a json file to be able to edit it. On my localhost it works fine, but on vercel I get an error:

{"errno":-30,"syscall":"open","code":"EROFS","path":"/var/task/data/data.json"}

Is there any way I can fix this or access the data folder?

[CatsAreMLG]

You can access the base URL via the System Environment Variables. However, our file system is not writable, you might want to try having a database to store this file on to be able to edit it.