When I run polymer init, it only shows V2 templates, but I want V1. How do I install Polymer 1.x application/element templates?
There's a pending issue (polymer-cli Issue #804) to restore the 1.x templates. In the meantime, you can manually install them with:
npm i -g justinfagnani/generator-polymer-init-polymer-1-element \
justinfagnani/generator-polymer-init-polymer-1-application
This will allow the 1.x templates to be listed when running polymer init.
来源：https://stackoverflow.com/questions/50042699/how-to-install-polymer-1-x-templates-with-polymer-cli