if (audioElement.paused || audioElement.ended || downloadTriggered) return;
for (int i = 0; i < n - 1; i++) {
，更多细节参见Line官方版本下载
As part of their research, they have put together a set of proposed improvements for Node.js' Web streams implementation that will eliminate promises in certain code paths which can yield a significant performance boost up to 10x faster, which only goes to prove the point: promises, while useful, add significant overhead. As one of the core maintainers of Node.js, I am looking forward to helping Malte and the folks at Vercel get their proposed improvements landed!，更多细节参见同城约会
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