Jeneko

Promise.resolve('1').then(console.log);
document.addEventListener('testEvent', () => console.log('2'));
document.dispatchEvent(new Event('testEvent'));
console.log('3')
Promise.resolve('4').then(console.log);

// Related question at StackOverflow
// https://stackoverflow.com/questions/71324258/the-callback-function-of-addeventlistener-is-queued-in-macro-task-queue-in-event

// EXPLANATION: dispatchEvent invokes event handlers SYNCHRONOUSLY!