node查看源切换淘宝源

• 查看当前源

npm config get registry
# or
yarn config get registry

• 切换淘宝源

npm config set registry https://registry.npm.taobao.org
# or
yarn config set registry https://registry.npm.taobao.org

• 切换yarn源

yarn config set registry https://registry.yarnpkg.com