title: angular 8 crashed when importing OAS generated api
body: <p>I am new to angular and construction my first angular front end to use an OAS generated angular-typescript package. The OAS is also generated from code and then used to generate the angular-typescript package (angular version 8.2.14). Then I just created a new angular project with "ng new ..." and installed the before generated package with "npm install local/dir --save". Then I imported the module in the app.module.ts with "import { ApiModule } from "package name". So far it works (but also nothing happens). </p>
  
  <p>When I import he ApiModule in the @NgModule angular just stops working, no error, no debug. I tried using demo apis from HowTos, these to import without problems. So I guess that there is a problem with the generated package, everything I tried and change in the last weeks didn't help. </p>
  
  <p>Maybe you have some ideas where I can start debugging. Thank you.</p>
  
  <pre><code>import { BrowserModule } from '@angular/platform-browser';
  import { NgModule } from '@angular/core';
  
  import { AppRoutingModule } from './app-routing.module';
  import { AppComponent } from './app.component';
  
  import { environment } from "../environments/environment";
  import { HttpClientModule } from "@angular/common/http";
  
  import { ApiModule, BASE_PATH} from "@angular-schule/book-monkey-api"; // Works
  // import { ApiModule, BASE_PATH} from "@jakoberpf/congstats-typescript-angular-api"; // Does not work
  
  @NgModule({
    declarations: [
  AppComponent
  ],
  imports: [
    BrowserModule,
    AppRoutingModule,
    HttpClientModule,
    ApiModule,
  ],
  providers: [{ provide: BASE_PATH, useValue: environment.CONGSTATS_BASE_PATH }],
    bootstrap: [AppComponent]
  })
  export class AppModule { }
  </code></pre>