function first() {
  return new Promise((resolve, reject) => {
    setTimeout(() => {
      resolve(1);
    }, 3000);
  });
}

function second() {
  return new Promise((resolve, reject) => {
    resolve(2);
  });
}

//===================
const awaiter = async (...fns) => {
  for (const x of fns) {
    console.log(await x());
  }
};

awaiter(first, second);