Demo and better explanation: https://pagespeed.io/resources/searchfilter
This is a demo and proof of concept for restructuring search filter setups in big ecommerce stores or large websites to avoid creating massive amounts of low-value documents and preventing search engine bots from getting lost and giving up.
This code is still a WIP and at this point none of the code has been tested for production use. If you decide to use it, please do so with caution.
See the LICENSE file for details (it’s the MIT license).