Many JS frameworks offer the possibility to run their test suite in a browser. So a developer or a user can check whether the framework/lib works with his browser(s). The test result will be sent to the framework developer(s) so they get test results from many browsers without having to do something (of course handling those reports is a lot of effort).

We could offer something similar like a public page where users can execute our tracker test suite '/tests/javascript/' and send us the result including OS, browser version and more. Ideally we would get the result automatically.