Simple script to show how to check if file exists with Node.js

check-if-file-exists.js

// text.txt file is in same folder where we are running this script
let filePath = path.join(process.cwd(), 'text.txt'); 
// Check if file exists and have access with fs.access:
fs.access(filePath, fs.F_OK, function (err) {
  if (err) {
    console.log('file not exists or not have access');
  } else {
    console.log('file exists');
  }
});