Plugin: polyfill-range-input-functionality
Opinion: a range input (<input type="range" />) ought be able to update the value of a CSS variable while being adjusted.
This will pair well with CSS math functions, making a larger subset of interactive diagrams possible without any JavaScript.
(Note: many JS-less interactive diagrams are already possible with existing and standard-draft CSS and HTML — thanks, :hover, :active, :target, :target-within, [foo^="bar"], combinators, :checked, <map>, <area>, et al!)
Status
🚧 Not implemented 🚧