How to set registry to NPM and Yarn
If you're in China and encounted a problem that it's too slow or even unable to connect
https://registry.yarnpkg.com, you can set yarn registry to
https://registry.npmmirror.com which is a npmjs.org mirror in China.
# Set registry globally yarn config set registry https://registry.npmmirror.com npm config set registry https://registry.npm.taobao.org # Set register temporarily npm --registry https://registry.npm.taobao.org install express