方法的顺序执行

// 方法顺序执行，不论同步还是异步以下代码实现方法顺序执行，不论同步还是异步，
let result;
for (const f of [func1, func2, func3]) {
  result = await f(result);
}

const applyAsync = (acc, val) => acc.then(val);
const composeAsync =
  (...funcArr) =>
  (x) =>
    funcArr.reduce(applyAsync, Promise.resolve(x));

const transformData = composeAsync(func1, func2, func3);
const result3 = transformData(data);