console.log('start'); // 1 setTimeout(() => console.log('timeout'), 0); // 7 new Promise((resolve, reject) => { console.log('promise constructor'); // 2 reject(); }).then(() => console.log('promise')) // .catch(() => console.log('promise1')) // 4 .catch(() => console.log('promise2')) // .then((a) => console.log('promise3', a)) // 5 .then(() => console.log('promise4')); // 6 console.log('final'); // 3