Q: Best practice, where to store constants?

[eco_bach]

Constants used by notifications that are mapped to commands, and might be used by more than one mediator, I store  in the Appplication Facade.

Other constants NOT mapped to any commands, I keep in the relevant view component. The latter would be used in both events dispatched by the component as well as the component's mediator.

Can anyone share their rationale for storing public constants and-or provide feedback on whether the above is recommended?
 

[Jason MacDonald]

I store all my constants in a seperate constants file with the exception of notifications sent by proxies, which are stored in the proxies themseleves.