node-sass安装失败的问题 stack Error: EACCES: permission denied, mkdir
sudo npm install -g node-sass --unsafe-perm=true --allow-root
参考
https://stackoverflow.com/questions/49679808/error-eacces-permission-denied-mkdir-usr-local-lib-node-modules-node-sass-b
https://www.cnblogs.com/chrissong/p/10961521.html