We will convert Compass to be in Swift 4 soon. This is not really big changes, but we can take this advantage to do some refactoring. Some are breaking changes. My proposals are

• Refactor Navigator to be used as instance. And inject scheme and Router into it. An app usually does not need many Navigator, and use can just set it as the current one. This also promotes the use of Router

let navigator = Navigator(scheme: "compass", routers: routers)
Navigator.current = navigator

• Right now Navigator and Router seem to confuse users. Like we declare Router, but also configure Navigator.routes. The above Navigator instance will make the composition clear Navigator -> Router -> Routable
• Refactor Router to be more flexible. Not all routers depend on currentController, some like preLogin prefers to switch rootViewController
• Remove ErrorRoutable, as we can handle via try catch with navigate function

What do you think @hyperoslo/ios ?