Promise timing

immediate.js

if (false) {
  new Promise((resCB) => {
    console.log('First Promise');
    resCB('p1');
  }).then(res => {
    console.log(`res = ${res}`);
  })
} else {
  (async () => {
    let res = await new Promise((resCB) => {
      console.log('First Promise');
      resCB('p1');
    });
    console.log(`res = ${res}`);
  })();
}
console.log('Hey!');
// Output:
// ---------------------------
// First Promise
// Hey!
// res = p1

on_next_tick-1.js

if (false) {
  Promise
    .resolve('One')
    .then((xx) => { console.log(xx); });
} else {
  (async () => {
    console.log( await Promise.resolve('One') );
  })();
}
console.log('Hey');
// Output:
// ---------------------------
// Hey
// One

on_next_tick-2.js

(async () => {
  console.log(await 'One');
})();
console.log('Hey');
// Output:
// ---------------------------
// Hey
// One