The catalog

Every cheatsheet is a folder holding a sheet.json, at <category>/<sheet>/ or <category>/<group>/<sheet>/, with the human readable titles in a meta.json at each level.

node tools/build-manifest.mjs walks that tree and writes cheatsheets.json, which is committed rather than built when the site deploys, so a local php -S localhost:8000 needs no Node. Regenerate and commit it whenever a cheatsheet is added, renamed or moved.

The same walk, as a gate

node tools/build-manifest.mjs --check

It fails a missing title, a path that is not lower case kebab, a kind that disagrees with what is in the folder, a sheet whose composition will not fit its own margins, and a cheatsheets.json that has gone stale. The Pages workflow runs it before it publishes, which is where a casing mismatch is caught - those resolve on Windows and 404 on the published site.

Part of the cheatsheets documentation. The repository is on GitHub, and the example page it documents is here.