孤陋寡闻,这是什么神仙写法? - CNode技术社区

for循环有个await? 代码如下:

const fs = require(‘fs’);

async function print(path) { const dir = await fs.promises.opendir(path);

for await (const dirent of dir) {
	console.log(dirent.name);
}

} print(’./’).catch(console.error);

https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Statements/for-await...of 流行不起来,不好用,我反正老早就知道这个了,但从来没用过

迭代异步生成器

let timeout = async (timeout) => new Promise((resolve, reject) => {
 setTimeout(() => {
 console.log(`delay:${timeout}ms`)
 resolve();
 }, timeout);
});
async function* getArray(){
 for (let i=0;i<5000;i+=1000){
 await timeout(i);
 yield i;
 }
 return;
}
(async()=>{
 for await (const time of getArray()) {
 console.log(`time:${time}`);
 }
 // for (const time of getArray()) {
 // console.log(`time:${time}`);
 // }
})();

既然下面使用了 for-await-of ,那么上面的dir赋值是否就不应该用 await 了呢?