想實(shí)現(xiàn)一個(gè)每張圖片延遲3s下載的功能,但是并沒有查找出await未生效的原因.代碼如下

axios.get(imgSrc, {
                responseType: 'stream'
         }).then(async res => {
            console.log("準(zhǔn)備下載")
         await pipeSync(res,dirName,type)
            currentNumber++;
            console.log(currentNumber);
});



function pipeSync(res,dirName,type){
    return new Promise(function (resolve, reject) {
       
           res.data.pipe(fs.createWriteStream(dirName + "/" + (new Date().getTime())+"."+type));
           setTimeout(resolve,3000);
    });
 }