part-11-fs-async.js

const {readFile, writeFile} = require('fs');
console.log('letsago');
readFile('./content/first.txt', 'utf8', (err, result) => {
    if (err) {
        console.log(err);
        return;
    }
    const first = result
    console.log(result)
    readFile('./content/second.txt', 'utf8', (err, result) => {
        if (err) {
            console.log(err);
            return;
        }
        const second = result;
        console.log(result)
        writeFile('./content/result-async.txt', `Here is the async result: ${first}, ${second}`, (err, result) => {
            if (err) {
                console.log(err);
                return;
            }
            console.log('mischief managed');
        })
    })
});

console.log('done, done, onto the next one');