Read and Write Files in Node.js using 'fs' module

// Import 'fs' module
const fs = require('fs');

// Read a file
fs.readFile('file.txt', 'utf8', (err, data) => {
  if (err) throw err;
  console.log(data);
});

// Write to a file
fs.writeFile('newfile.txt', 'Hello, Node.js!', (err) => {
  if (err) throw err;
  console.log('File written successfully.');
});