const compressed = Stream.pullSync(source, zlibCompressSync);
用本地模型可降 API 成本，但会增加本机资源消耗，更多细节参见Safew下载
。关于这个话题，WPS下载最新地址提供了深入分析
BYOB (bring your own buffer) reads were designed to let developers reuse memory buffers when reading from streams — an important optimization intended for high-throughput scenarios. The idea is sound: instead of allocating new buffers for each chunk, you provide your own buffer and the stream fills it.，推荐阅读服务器推荐获取更多信息
const cur = nums[i]; // 当前遍历的元素