"Available routes" only lists available Java Views

[haijian-vaadin]

When going to an unknown route, eg. http://localhost:8080/abcd, I get correctly a notification that the route doesn't exist. However, the "Available routes" list only lists Java classes. My app has four routes where of three are TS and one Java, and the list has only the one Java entry.

[platosha]

Interesting bug, not sure how to fix. Ideas:

1. Make Flow aware of client-side routes
2. Some client-side handling for 404 response, so that the available routes list coming from Java is supplemented with TypeScript routes