他的回复:
他这个镜像及其简单，这是npm包，可以通过在线引用的方法unpkg is a fast, global content delivery network for everything on npm. Use it to quickly and easily load any file from any package using a URL like:unpkg.com/:package@:version/:fileFrom Dec 26 to Jan 25 unpkg served 13,984,357,799 requests and a total of 207 TB of data to1,261,146,070 unique visitors, 93% of which were served from the cache.这是他们简介。准确的说，不是镜像，而是一个国内站，因为这个网站架构于国外。国内获取资源网络并不佳。https://github.com/unpkg/unpkg.com这是他们的项目源码地址
