npm（1）npm镜像源配置  npm默认的镜像地址是：https://registry.npmjs.org   淘宝开源的镜像站：https://registry.npmmirror.com/  查看当前的镜像源：npmconfiggetregistry  设置为淘宝镜像源：npmconfigsetregistryhttps://registry.npmmirror.com/