Angular AppModule demonstrating usage of HTTP_INTERCEPTORS providers

app.module.ts

@NgModule({
  imports: [
    BrowserModule,
    ...
  ],
  declarations: [ AppComponent ],
  providers: [
    { provide: HTTP_INTERCEPTORS, useClass: LoggingHttpInterceptor, multi: true }
  ],
  bootstrap: [ AppComponent ]
})
export class AppModule { }