CODEWITHSUNDEEP
node.jsexeyarnpkg
S..
S..

Reputation: 335

Node JS pkg executable not able to read files from outside?

I have a JS script which I package into an executable using pkg --public filename.js

I want to read data from a file like this:

let filename = __dirname + "/data/streets_profiles.csv" 
fs.createReadStream(filename)
.pipe(parse({ delimiter: ',' }))
.on('data', (r) => {
    //console.log("r: ", r);
    data.push(r);        
})
.on('end', async () => {
 //... do something

While this works well when I just run the script with node filename.js in the VS code powershell, when I package the script into a executable I get this the error from executable

I found a solution, which would be to add the csv file path I want to read into package.json assets, but I would like to be able to change the data in this csv file without creating another executable, and for it to not be locked in the executable as a asset but rather as a standalone editable file which can be read by the exe, is there any way i could achieve this or any better way to create a executable without these limitations?

Upvotes: 1

Views: 2960

Answers (2)

roshnet
roshnet

Reputation: 2073

I followed the advice here and got it to work.

Basically, replacing all occurrences of __dirname with process.cwd() got it to work.

NOTE: A simple find-and-replace will not work. You also need to remove any extra relative paths like "../../" from all occurrences. So path.join(__dirname, '../../', 'uploads') will become path.join(process.cwd(), 'uploads')

Conclusively,

  • All paths in your source code must be relative to the project root, and not relative to other files.
  • The executable must be run from the project root.
  • Static files and .env load just fine if placed next to the executable.

Upvotes: 1

S..
S..

Reputation: 335

So after a long research I found out that the packaged executable is located in C:/snapshots for me so getting __dirname was useless, but path.dirname(process.execPath) solved my issue as it can get the actual location of the file and therefore actions with files in the same directory are enabled

Upvotes: 3

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