It passes options through to fondue:
appuserequire'fondue-middleware' tracer_name: '__my_tracer' ;
fondue-server serves the current directory with
express.static() on http://localhost:3000/.
fondue-proxy starts a proxy server at http://localhost:8080/ that proxies whatever is running on http://localhost:3000/.
You can use the fondue API on the page site itself (in the browser) by accessing the global