Lazy load module with APP_INITIALIZER

import { Component } from '@angular/core';

@Component({
  selector: 'my-app',
  template: `
    <h1>My App</h1>
    <nav>
      <a routerLink="eager">Eager</a>
      <a routerLink="lazy">Lazy</a>
    </nav>
    <router-outlet></router-outlet>
  `
})
export class AppComponent {}

import { NgModule } from '@angular/core';
import { BrowserModule  } from '@angular/platform-browser';

import { AppComponent } from './app.component';
import { EagerComponent } from './eager.component';
import { routing } from './app.routing';

@NgModule({
  imports: [
    BrowserModule,
    routing
  ],
  declarations: [
    AppComponent,
    EagerComponent
  ],
  bootstrap: [AppComponent]
})
export class AppModule {}

import { ModuleWithProviders } from '@angular/core';
import { Routes, RouterModule } from '@angular/router';

import { EagerComponent } from './eager.component';

const routes: Routes = [
  { path: '', redirectTo: 'eager', pathMatch: 'full' },
  { path: 'eager', component: EagerComponent },
  { path: 'lazy', loadChildren: 'app/lazy/lazy.module#LazyModule' }
];

export const routing: ModuleWithProviders = RouterModule.forRoot(routes);

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

platformBrowserDynamic().bootstrapModule(AppModule);

<!DOCTYPE html>
<html>
  <head>
    <script>document.write('<base href="' + document.location + '" />');</script>
    <title>NgModule - Contact</title>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">

     <!-- Polyfill(s) for older browsers -->
    <script src="https://unpkg.com/core-js/client/shim.min.js"></script>

    <script src="https://unpkg.com/zone.js@0.6.23?main=browser"></script>
    <script src="https://unpkg.com/reflect-metadata@0.1.3"></script>
    <script src="https://unpkg.com/systemjs@0.19.27/dist/system.src.js"></script>

    <script src="systemjs.config.js"></script>
    <script>
      System.import('app/main').catch(function(err){ console.error(err); });
    </script>
  </head>

  <body>
    <my-app>Loading...</my-app>
  </body>
</html>

/**
 * PLUNKER VERSION
 * (based on systemjs.config.js in angular.io)
 * System configuration for Angular 2 samples
 * Adjust as necessary for your application needs.
 */
(function (global) {
  System.config({
    // DEMO ONLY! REAL CODE SHOULD NOT TRANSPILE IN THE BROWSER
    transpiler: 'ts',
    typescriptOptions: {
      tsconfig: true
    },
    meta: {
      'typescript': {
        "exports": "ts"
      }
    },
    paths: {
      // paths serve as alias
      'npm:': 'https://unpkg.com/'
    },
    // map tells the System loader where to look for things
    map: {
      // our app is within the app folder
      app: 'app',

      // angular bundles
      '@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/upgrade': 'npm:@angular/upgrade/bundles/upgrade.umd.js',

      // other libraries
      'rxjs':                       'npm:rxjs',
      'angular2-in-memory-web-api': 'npm:angular2-in-memory-web-api',
      'ts':                         'npm:plugin-typescript@4.0.10/lib/plugin.js',
      'typescript':                 'npm:typescript@2.0.2/lib/typescript.js',

    },
    // packages tells the System loader how to load when no filename and/or no extension
    packages: {
      app: {
        main: './main.ts',
        defaultExtension: 'ts'
      },
      rxjs: {
        defaultExtension: 'js'
      },
      'angular2-in-memory-web-api': {
        main: './index.js',
        defaultExtension: 'js'
      }
    }
  });
})(this);


/*
Copyright 2016 Google Inc. All Rights Reserved.
Use of this source code is governed by an MIT-style license that
can be found in the LICENSE file at http://angular.io/license
*/

{
  "compilerOptions": {
    "target": "es5",
    "module": "commonjs",
    "moduleResolution": "node",
    "sourceMap": true,
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "removeComments": false,
    "noImplicitAny": true,
    "suppressImplicitAnyIndexErrors": true
  }
}

import { Component } from '@angular/core';

@Component({
  template: '<p>Eager Component</p>'
})
export class EagerComponent {}

import { NgModule } from '@angular/core';
import { Http } from '@angular/http';

import { LazyComponent }   from './lazy.component';
import { routing } from './lazy.routing';

import { providerFactory } from './provider.factory';

@NgModule({
  imports: [routing],
  declarations: [LazyComponent],
  providers: [
    Http,
    providerFactory(1, 'test')
  ]
})
export class LazyModule {}

import { Component } from '@angular/core';

@Component({
  template: '<p>Lazy Component</p>'
})
export class LazyComponent {}

import { ModuleWithProviders } from '@angular/core';
import { Routes, RouterModule } from '@angular/router';

import { LazyComponent } from './lazy.component';

const routes: Routes = [
  { path: '', component: LazyComponent }
];

export const routing: ModuleWithProviders = RouterModule.forChild(routes);

import { Provider, APP_INITIALIZER } from '@angular/core';
import { Http } from '@angular/http';
import { LoadService } from './load.service';

export function providerFactory(componentId: number, langISOCode: string): Provider {
    return {
        provide: APP_INITIALIZER,
        useFactory: (gn: LoadService) => () => gn.getTranslation(componentId, langISOCode),
        deps: [Http],
        multi: true
    };
}

import {Injectable} from '@angular/core';
import {Observable} from 'rxjs/Rx';
import {Response, Http} from '@angular/http';

@Injectable()
export class LoadService {
    constructor(private _http: Http) {
        console.log('LoadService');
    }

    public getTranslation(componentId: number, langISOCode: string): Observable<any> {
        console.log(componentId, langISOCode);

        return Observable.of({
            id: 1,
        }).delay(10000);
    }
}