angular/modules/@angular/router/src/router_providers_common.ts

import {OpaqueToken, ComponentResolver} from '@angular/core';
import {LocationStrategy, PathLocationStrategy, Location} from '@angular/common';
import {Router, RouterOutletMap} from './router';
import {RouteSegment} from './segments';
import {RouterUrlSerializer, DefaultRouterUrlSerializer} from './router_url_serializer';
import {ApplicationRef} from '@angular/core';
import {BaseException} from '@angular/core';

/**
 * The Platform agnostic ROUTER PROVIDERS
 */
export const ROUTER_PROVIDERS_COMMON: any[] = /*@ts2dart_const*/[
  RouterOutletMap,
  /*@ts2dart_Provider*/ {provide: RouterUrlSerializer, useClass: DefaultRouterUrlSerializer},
  /*@ts2dart_Provider*/ {provide: LocationStrategy, useClass: PathLocationStrategy}, Location,
  /*@ts2dart_Provider*/ {
    provide: Router,
    useFactory: routerFactory,
    deps: /*@ts2dart_const*/
        [ApplicationRef, ComponentResolver, RouterUrlSerializer, RouterOutletMap, Location],
  },
  /*@ts2dart_Provider*/ {provide: RouteSegment, useFactory: (r) => r.routeTree.root, deps: [Router]}
];

function routerFactory(app: ApplicationRef, componentResolver: ComponentResolver,
                       urlSerializer: RouterUrlSerializer, routerOutletMap: RouterOutletMap,
                       location: Location): Router {
  if (app.componentTypes.length == 0) {
    throw new BaseException("Bootstrap at least one component before injecting Router.");
  }
  // TODO: vsavkin this should not be null
  let router = new Router(null, app.componentTypes[0], componentResolver, urlSerializer,
                          routerOutletMap, location);
  app.registerDisposeListener(() => router.dispose());
  return router;
}