Created as a proof of concept for a decorator that attaches the state config to a controller class and a factory for registering route configs from the class.

app.ts

import {RouteConfig, registerState} from './RouteConfig';

@RouteConfig({
  name: 'home',
  url: '/home'
  controller: HomePageController,
  controllerAs: 'vm'
})
class HomePageController {

}

angular.module('myApp', ['ui.router'])
  .config(registerState(HomePageController));

RouteConfig.ts

/**
 * Decorator for controller classes for route states. You can reference the class in the
 * `controller` property. Name is a required property on the config if using the 
 * registerState helper.
 * @return Function which takes a UI Router config object.
 */
export default RouteConfig(target) {
  return function(config) {
    target.$uiRouteConfig = config;
  }
}

/**
 * Factory function to create a config function that registers an angular config function
 * that registers the state using the value from the route config.
 * 
 * @param target Class decorated with @RouteConfig
 * @return A function which can be passed to angular.config to register the state on the target
 */
export function registerState(target) {
  let configFn = function($stateProvider) {
    this.$stateProvider.state(getRouteConfig(target));
  }
  configFn.$inject = ['$stateProvider'];
  return configFn;
}

/**
 * Helper function to pull the state config object off of a class. Abstracts the property
 * name used and allows getting the config without Typescript complaining.
 * 
 * @param target Class decorated with @RouteConfig
 */
export function getRouteConfig(target) {
  return taret.$uiRouteConfig;
}

Can be used as an alternative to ngParty/ng-metadata#27

Work has begun on https://github.com/aciccarello/ui-router-decorator

You have a typo in line 35.