Question 206942 in Javascript Question posted in
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Javascript – fs module in node js fs.existsSync not recognising with Latin filename

I have some file names in "LATIN" but the fs.existsSync function is not able to recognise it

1689017335025-Naan En Nesarudaiyavan â mix.json

I tired with buffer too but still not able to get the proper response.

I am providing the proper path of the file too but still its not detecting that file.

I am using the fs module in electron js.

Other files other than Latin are been properly detected by fs.existsSync

const localDownloadPath = path.join(app.getPath('userData'), ${endpath}/${detail.name});
if(fs.existsSync(localDownloadPath)){ 
   return true; 
}else {return false;}
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2

Answers


  1. 0

    As said in Node.js docs,

    Using fs.exists() to check for the existence of a file before calling fs.open(), fs.readFile(), or fs.writeFile() is not recommended. Doing so introduces a rare condition, since other processes may change the file’s state between the two calls. Instead, user code should open/read/write the file directly and handle the error raised if the file does not exist.

    So if you want to read/open a file, rather call the function and catch errors.

    Example of fs.readFile():

    const fs = require('node:fs');

let fd;

fs.readFile('myFile.txt','r',(err, data) => {
  if(err) {
    if(err.code == 'ENOENT') {
      console.error('myFile.txt does not exist');
      return;
    }
    throw err;
  }
  fd = data;
});

    PS:
    I tried what you described in question as not working for you and it works well for me. Check if you wrote that filename correctly.
    Screenshot

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  2. 0

    It might be an encoding issue. The fs.existsSync() function may not recognize file names containing non-ASCII characters or characters outside the standard character set.

    To ensure proper recognition of file names with non-ASCII characters, you can try using the fs.readdirSync() function instead.

    e.g.

    const localDownloadPath = path.join(app.getPath('userData'), endpath);

const files = fs.readdirSync(localDownloadPath);
const fileExists = files.includes(detail.name);

if (fileExists) {
  // File exists
  return true;
} else {
  // File does not exist
  return false;
}
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