1. npm 自己的registry 很慢 可以改用淘宝的
临时用 npm --registry https://registry.npm.taobao.org install 包名 永久设置 npm config set registry https://registry.npm.taobao.org
查看registry 的 配置 :npm config get registry
npm info 包名
1) npm install 包名
npm install (npm install <package_name> [--save-prod]) , dependencies
npm install <package_name> --save-dev, devDependencies
2) npm uninstall
3) npm outdated 包名
eg:
npm outdated webpack Package Current Wanted Latest Location webpack 4.16.1 4.21.0 4.21.0 console-afd