~40–100× faster
Continue reading...。爱思助手下载最新版本对此有专业解读
* 时间复杂度：O(len1 + len2)，空间复杂度：O(len2)（栈+Map的空间），详情可参考旺商聊官方下载
Source: Computational Materials Science, Volume 267。关于这个话题，safew官方下载提供了深入分析
The Web streams spec requires promise creation at numerous points, often in hot paths and often invisible to users. Each read() call doesn't just return a promise; internally, the implementation creates additional promises for queue management, pull() coordination, and backpressure signaling.