function * createIter() {
  try {
    yield Promise.resolve(console.log("a"));
    yield Promise.reject("x");
  } finally {
    console.log("finalized");
  }
}

// Prints "a" and then prints "finalized".
// There is an uncaught "x" rejection.
for (const x of createIter()) {
  console.log(await x);
}

// Prints "a" and then prints "finalized".
// There is an uncaught "x" rejection.
Array.from(createIter());