[SOLVED] alerts not showing up in my plunker for my angular md table

alerts not showing up in my plunker for my angular md table

I am trying to display angular material table.
so I debugged in the plunker.
I gave alerts in different files of my code base
but its not displaying the alerts when I run it in the plunker.
can you tell me how to fix it.
providing my code and plunker below.

https://plnkr.co/edit/XLYLsuMd3I9ICuBgMeDH?p=preview

@NgModule({

  imports: [
    BrowserModule,
    BrowserAnimationsModule,
    FormsModule,
    HttpModule,
    PlunkerMaterialModule,
    MdNativeDateModule,
    ReactiveFormsModule,
    InMemoryWebApiModule.forRoot(InMemoryDataService),
  ],

  declarations: [SelectFormExample],
  bootstrap: [SelectFormExample],
  providers: [AppState]
})
export class PlunkerAppModule {}

platformBrowserDynamic().bootstrapModule(PlunkerAppModule);
alert("I am here");

Solution

Specify a version for angular-in-memory-web-api in systemjs.config.js

'angular-in-memory-web-api': 'https://unpkg.com/angular-in-memory-web-api@0.2.4/bundles/in-memory-web-api.umd.js'

Without a version it uses the latest. I would find a more up to date plunker because the plunker is defaulting to the latest angular (v5.1.3) and it designed for ^4.0.0