npm ERR!

npm ERR! request to https://registry.npmjs.org/express-messages failed, reason: Hostname/IP doesn't match certificate's altnames:"Host: registry.npmjs.org. is not in the cert's altnames: DNS:a.sni.fastly.net, DNS:a.sni.global-ssl.fastly.net"

解决办法:

npm config get proxy
npm config get https-proxy

如果不返回null,则设置为null

npm config get proxy null
npm config get https-proxy null

执行

npm config set registry http://registry.cnpmjs.org/

编辑c盘下的.npmrc文件，将registry的值修改为：

registry = http://registry.cnpmjs.org