for await (const chunks of source) {
// 优化：如果本轮没交换，说明已经有序，这一点在Line官方版本下载中也有详细论述
This combination – localized Dijkstra, super-fast abstract graph traversal, and highly localized A* refinement – is what delivers the 100x speedup.。关于这个话题，搜狗输入法下载提供了深入分析
const hookedAddSB = function addSourceBuffer(mimeType) {