在node.js中以正确的顺序运行代码

const fs = require('fs');

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

const fs = require('fs');

function readFilePromise(filename) {
  return new Promise((resolve, reject) => {
    fs.readFile(filename, 'utf8', (err, data) => {
      if (err) reject(err);
      resolve(data);
    });
  });
}

readFilePromise('file.txt')
  .then((data) => {
    console.log(data);
  })
  .catch((err) => {
    console.error(err);
  });

const fs = require('fs');

async function readFileAsync(filename) {
  try {
    const data = await fs.promises.readFile(filename, 'utf8');
    console.log(data);
  } catch (err) {
    console.error(err);
  }
}

readFileAsync('file.txt');