Does the Node event loop maintain the order async callbacks are sent to it?

node-event-order-test.js

// test if node's event loop is gauranteed to run events in the order they are
// pushed to the event queue. Turns out they DO NOT!!! 10,000 integers appended
// one after the other to append.txt using fs.appendFile() will NOT maintain
// the order of those ints.

const fs = require('fs')

function getAppend(i) {
    return () => {
        fs.appendFile('append.txt', `${i.toString().padStart(3)}\n`, (err) => {
            if (err) throw err
            console.log(i)
        })
    }
}

for (let i = 0; i < 10000; i++) {
    getAppend(i)()
}