node promisify without err

const { promisify } = require('util');
const fs = require('fs');

const readFileAsync = promisify(fs.readFile);

async function readAsync(filePath) {
  return await readFileAsync(filePath, 'utf8');
}

// Example usage
const filePath = 'example.txt';

readAsync(filePath)
  .then(data => console.log(data))
  .catch(error => console.error(error));