#TickFn #callback

anotherTickFn.js

let anotherTickFn = x => {
    console.log('async', x);
    if (x < 10){
        process.nextTick(() => {
            anotherTickFn(x + 1);
        });
    }
}

console.log('=== start async ===');
anotherTickFn(1);
console.log('=== end async ===');