Angular2 Router-Outlet Warning

<!DOCTYPE html>
<html>

  <head>
    <base href="." />
    <title>angular2 playground</title>
    <link rel="stylesheet" href="style.css" />
    <script src="https://unpkg.com/zone.js/dist/zone.js"></script>
    <script src="https://unpkg.com/zone.js/dist/long-stack-trace-zone.js"></script>
    <script src="https://unpkg.com/reflect-metadata@0.1.3/Reflect.js"></script>
    <script src="https://unpkg.com/systemjs@0.19.31/dist/system.js"></script>
    <script src="config.js"></script>
    <script>
    System.import('app')
      .catch(console.error.bind(console));
  </script>
  </head>

  <body>
    <my-app>
    loading...
  </my-app>
  </body>

</html>

/* Styles go here */

### Angular2 Starter Plunker - Typescript - RC.0

A simple plunker demonstrating Angular2 usage:
- Uses SystemJS + TypeScript to compile on the fly
- Includes binding, directives, http, pipes, and DI usage.

For opening

System.config({
  //use typescript for compilation
  transpiler: 'typescript',
  //typescript compiler options
  typescriptOptions: {
    emitDecoratorMetadata: true
  },
  paths: {
    'npm:': 'https://unpkg.com/'
  },
  //map tells the System loader where to look for things
  map: {
    
    'app': './src',
    
    '@angular/core': 'npm:@angular/core/bundles/core.umd.js',
    '@angular/common': 'npm:@angular/common/bundles/common.umd.js',
    '@angular/compiler': 'npm:@angular/compiler/bundles/compiler.umd.js',
    '@angular/platform-browser': 'npm:@angular/platform-browser/bundles/platform-browser.umd.js',
    '@angular/platform-browser-dynamic': 'npm:@angular/platform-browser-dynamic/bundles/platform-browser-dynamic.umd.js',
    '@angular/http': 'npm:@angular/http/bundles/http.umd.js',
    '@angular/router': 'npm:@angular/router/bundles/router.umd.js',
    '@angular/forms': 'npm:@angular/forms/bundles/forms.umd.js',
    
    '@angular/core/testing': 'npm:@angular/core/bundles/core-testing.umd.js',
    '@angular/common/testing': 'npm:@angular/common/bundles/common-testing.umd.js',
    '@angular/compiler/testing': 'npm:@angular/compiler/bundles/compiler-testing.umd.js',
    '@angular/platform-browser/testing': 'npm:@angular/platform-browser/bundles/platform-browser-testing.umd.js',
    '@angular/platform-browser-dynamic/testing': 'npm:@angular/platform-browser-dynamic/bundles/platform-browser-dynamic-testing.umd.js',
    '@angular/http/testing': 'npm:@angular/http/bundles/http-testing.umd.js',
    '@angular/router/testing': 'npm:@angular/router/bundles/router-testing.umd.js',
    
    'rxjs': 'npm:rxjs',
    'typescript': 'npm:typescript@2.0.2/lib/typescript.js'
  },
  //packages defines our app package
  packages: {
    app: {
      main: './main.ts',
      defaultExtension: 'ts'
    },
    rxjs: {
      defaultExtension: 'js'
    }
  }
});

//main entry point
import {platformBrowserDynamic} from '@angular/platform-browser-dynamic';
import {AppModule} from './app';

platformBrowserDynamic().bootstrapModule(AppModule)

//our root app component
import {Component, NgModule, NgInit} from '@angular/core'
import {BrowserModule} from '@angular/platform-browser'
import {RouterModule, Routes, Resolve} from '@angular/router';

@Component({
  selector: 'my-app',
  template: `
    <div id='my-app'>
      <h1>Angular 2 Router-Outlet Warning</h1>
      <router-outlet></router-outlet>
    </div>
  `,
})
export class App {
  constructor() { }
}

@Component({
  selector: 'master-page',
  template: `
    <div id='master-page'>
      <div>
        This content is in the "Outer" page
      </div>
      <div>
        <a routerLink="details1">Inner Section 1</a>
        <a routerLink="details2">Inner Section 2</a>
      </div>
      <div *ngIf="itemLoaded">
        <router-outlet></router-outlet>
      </div>
    </div>
  `
})
export class Master implements OnInit {
  itemLoaded: boolean = false;
  constructor() { }
  
  ngOnInit(): void {
    setTimeout(() => {
      this.itemLoaded = true;
    }, 1000);
  }
}

@Component({
  template: `
    <div>
      This content is in the "Inner" page (1)
    </div>
  `
})
export class Details1 {
  constructor() {}
}

@Component({
  template: `
    <div>
      This content is in the "Inner" page (2)
    </div>
  `
})
export class Details2 {
  constructor() {}
  }
}

const routes: Routes = [
  {
    path: 'master'
    component: Master,
    children[
      {
        path: '',
        pathMatch: 'prefix',
        redirectTo: 'details1'
      },
      {
        path: 'details1',
        component: Details1
      },
      {
        path: 'details2',
        component: Details2
      }
    ]
  },
  {
    path: '',
    pathMatch: 'prefix',
    redirectTo: 'master'
  }
];

@NgModule({
  imports: [ BrowserModule, RouterModule.forRoot(routes) ],
  declarations: [ App, Master, Details1, Details2 ]
  bootstrap: [ App ]
})
export class AppModule {}