message: fix(router): removed obsolete TODO comment
  PR Close
diff: */
  import {Compiler, InjectionToken, Injector, NgModuleFactory, NgModuleFactoryLoader} from '@angular/core';
  -// TODO(i): switch to fromPromise once it's expored in rxjs
  import {Observable, from, of } from 'rxjs';
  import {map, mergeMap} from 'rxjs/operators';
  import {LoadChildren, LoadedRouterConfig, Route, standardizeConfig} from './config';
  