How to read file in Node.js in a way that it doesn't block the event loop code sample

nonEventLoopBlockingFileReading.js

// A better way of reading file that doesn't block the event loop
const fs = require('fs');
  fs.readFile('countries.csv', (error, data) => {
    if (error) {
      throw new Error(error);
    }
    console.log(data.toString());
  });

// Other JavaScript code below this line will not be blocked which is good.
console.log('OTHER JAVASCRIPT THAT IS NOT BLOCKED');