Tricky Event Loop Based Question

Event.js

console.log('Start');

setTimeout(() => {
  console.log('Inside setTimeout');
}, 0);

Promise.resolve()
  .then(() => {
    console.log('Inside first promise');
    return new Promise((resolve) => {
      setTimeout(() => {
        console.log('Inside promise-setTimeout');
        resolve();
      }, 0);
    });
  })
  .then(() => {
    console.log('Inside second promise');
  });

setTimeout(() => {
  console.log('Inside second setTimeout');
  Promise.resolve().then(() => {
    console.log('Inside promise within setTimeout');
  });
}, 0);

console.log('End');
/* 
Start
End
Inside first promise
Inside setTimeout
Inside second setTimeout
Inside promise within setTimeout
Inside promise-setTimeout
Inside second promise
*/