function iter(num) {
  if(num > 5) return;

  setImmediate(() => {
    console.log('SetImmediate');
  });

  process.nextTick(() => { 
    console.log(`NextTick, iteration ${num}`);
    iter(num + 1);
  });
}

iter(0);

// NextTick, iteration 0
// NextTick, iteration 1
// NextTick, iteration 2
// NextTick, iteration 3
// NextTick, iteration 4
// NextTick, iteration 5
// SetImmediate
// SetImmediate
// SetImmediate
// SetImmediate
// SetImmediate
// SetImmediate