@knowler MDN accepts PRs…
I started working on https://github.com/Westbrook/axe-core-element-internals as a test bed for #ElementInternals usage for ace-core, but maybe more useful at large for these APIs. I accept PRs, too. 🤗
Also, we’re looking to reignite the push for community docs and guides for WCs in https://discord.gg/KzgaSbGc9q to clarify these sorts of things, as well.