mac npm install 很慢或报错

npm ERR! code CERT_HAS_EXPIRED

npm ERR! errno CERT_HAS_EXPIRED

npm ERR! request to https://registry.npm.taobao.org/pnpm failed, reason: certificate has expired

1、取消ssl验证：
 
npm config set strict-ssl false
 
修改后一般就可以了，先试试
 
 
2、更换npm镜像源：
 
npm config set registry http://registry.cnpmjs.org
npm config set registry http://registry.npm.taobao.org