npm設置代理

爲npm設置代理
npm config set proxy=http://server:port
npm config set https-proxy http://server:port

關於https
若是代理不支持https的話須要修改npm存放package的網站地址：
npm config set registry "http://registry.npmjs.org/"

代理用戶名和密碼
npm config set proxy http://username:password@server:port
npm confit set https-proxy http://username:password@server:port

取消代理
npm config delete proxy
npm config delete https-proxy