将回调onSuccess返回值提升为Caller Function返回值

function asyncFunction(callback) {
  // 异步操作
  setTimeout(() => {
    callback('onSuccess');
  }, 1000);
}

function callerFunction() {
  return new Promise((resolve, reject) => {
    asyncFunction((result) => {
      resolve(result);
    });
  });
}

callerFunction().then((result) => {
  console.log(result); // 输出：onSuccess
});

function asyncFunction() {
  return new Promise((resolve, reject) => {
    // 异步操作
    setTimeout(() => {
      resolve('onSuccess');
    }, 1000);
  });
}

async function callerFunction() {
  const result = await asyncFunction();
  return result;
}

(async () => {
  const result = await callerFunction();
  console.log(result); // 输出：onSuccess
})();