message: types(router): mark history and currentRoute as readonly
diff: @@ -84,8 +84,8 @@ export interface RouterOptions {
  }
  export interface Router {
  - history: RouterHistory
  - currentRoute: Ref<RouteLocationNormalizedLoaded>
  + readonly history: RouterHistory
  + readonly currentRoute: Ref<RouteLocationNormalizedLoaded>
  addRoute(parentName: RouteRecordName, route: RouteRecordRaw): () => void
  addRoute(route: RouteRecordRaw): () => void
  