Preliminary, experimental, incomplete, undocumented, and generally unsuitable for anything. Expect everything to change.
Opininated components that depend on the nano library.
Most of these components are Custom Elements, so they do depend on bits of the Web Components standard platform itself. Specifically, CustomElements and HTMLImports feature support is expected.
These features are natively available in Chrome, and otherwise supported by web-componentsjs polyfills. These elements do not depend on ShadowDOM, so webcomponents-lite is sufficient.