Hmmm, no, that's not accurate. You specify a folder serving static content and the HTTP path is resolved against that folder. e.g.

  router.route("/*").pipe(new HTTPFileController("web/");
  router.route("/files/*").pipe(new HTTPFileController("something_else/");

An HTTP request for /foo.html returns web/foo.html. An HTTP request for /foo/bar.html returns web/foo/bar.html.

An HTTP request for /files/xyz.jpg returns the something_else/xyz.jpg.

If the HTTP path is a directory, then index.html is automatically appended to it. This is a brief overview of the referenced documentation above.