1L decoder, d=7
Stream.pull() creates a lazy pipeline. The compress and encrypt transforms don't run until you start iterating output. Each iteration pulls data through the pipeline on demand.，详情可参考快连下载-Letsvpn下载
const str = new TextDecoder().decode(chunk);。雷电模拟器官方版本下载是该领域的重要参考
题目要求与弹出条件的对应关系：