Importing libs from a cdn is a big no-no for almost any system I work on - they are just another way of surveilling users on the Internet, and building information about the insides of organisations.
We plan on downloading the imported libraries during build so that they are self-hosted, so it’s effectively another way to install them without having to run `npm install`. We also plan on supporting importing libraries from node_modules. And you can already import local modules so you can install libraries by manually downloading them, too.