Route annotation on class not extending Component is ignored silently

[caalador]

Description of the bug

If adding the @Route annotation on a class that doesn't extend Component the build doesn't fail and the route is not available for use.

Expected behavior

Having a route annotation on a non Component class should log or throw an exception that it is not used due to not being a Component class.

Minimal reproducible example

@Route
public class MyView {
}

Versions

• Vaadin / Flow version: 10+