Overview
Static data lives in the source tree as
showcase-react-app/public/data/react-primitives/*.json (Vite copies them into
the build, then the showcase build copies to showcase/data/react-primitives/).
The React bundle issues ordinary GET requests so you can test with devtools Network,
or replace files while serving over HTTP and refresh.
Endpoints are passed as
data-tile-endpoint / data-kv-endpoint on the mount div so you
can point at other JSON in the same origin without recompiling the bundle (edit this page's
render() output and re-run build-showcase.py only).
If this line stays visible, the
IIFE did not run — from repo root, run (cd showcase-react-app && npm ci && npm run
build) then python3 generator/build-showcase.py. See
showcase-react-app/README.md.