What does the classic async1/async2 ordering puzzle log?

async function async1() {
  console.log("async1 start");
  await async2();
  console.log("async1 end");
}
 
async function async2() {
  console.log("async2");
}
 
console.log("script start");
setTimeout(() => console.log("setTimeout"), 0);
async1();
new Promise((resolve) => {
  console.log("promise1");
  resolve();
}).then(() => console.log("promise2"));
console.log("script end");