README.Zh CN - Type Challenges

<h1>Promise.all </h1><blockquote><p>by Anthony Fu <a href="https://github.com/antfu" target="_blank">@antfu</a></p></blockquote><p><a href="https://tsch.js.org/20/play/zh-CN" target="_blank"></a>    <a href="./README.md" target="_blank"></a> <a href="./README.ja.md" target="_blank"></a> </p>

给函数PromiseAll指定类型，它接受元素为 Promise 或者类似 Promise 的对象的数组，返回值应为Promise<T>，其中T是这些 Promise 的结果组成的数组。

const promise1 = Promise.resolve(3);
const promise2 = 42;
const promise3 = new Promise<string>((resolve, reject) => {
  setTimeout(resolve, 100, 'foo');
});

// 应推导出 `Promise<[number, 42, string]>`
const p = PromiseAll([promise1, promise2, promise3] as const)