Angular Universal doesn't work with Third Party Libraries

[calibri87]

Tech: Angular Cli, Angular version 7, Angular Google Maps, Firebase Functions.

Issue: I'm trying to serve my angular universal app but getting an error for angular google maps when building.

Error I get:

/Users/test/Public/Leisure/leisure-app/functions/node_modules/@agm/core/services/managers/info-window-manager.js:1 (function (exports, require, module, filename, dirname) { import { Observable } from 'rxjs'; ^^^^^^

SyntaxError: Unexpected token import at createScript (vm.js:80:10) at Object.runInThisContext (vm.js:139:10)

Seems that Angular Universal doesnt like third party libraries.

My App Module:

import { AgmCoreModule } from '@agm/core';
import { AngularFireAuthModule } from '@angular/fire/auth';
import { AngularFireDatabase } from '@angular/fire/database';
import { AngularFireModule } from '@angular/fire';
import { ServiceWorkerModule } from '@angular/service-worker';
import { AngularFireStorageModule } from '@angular/fire/storage';
import { AngularFirestoreModule } from '@angular/fire/firestore';
import { BrowserModule } from '@angular/platform-browser';
import { CommonModule } from '@angular/common';
import { GooglePlaceModule } from 'ngx-google-places-autocomplete';
import { HTTP_INTERCEPTORS, HttpClientModule } from '@angular/common/http';
import { NgModule, NO_ERRORS_SCHEMA, CUSTOM_ELEMENTS_SCHEMA } from '@angular/core';
import { NgxErrorsModule } from '@hackages/ngxerrors';
import { ReactiveFormsModule, FormsModule } from '@angular/forms';
import { RouterModule } from '@angular/router';
import { TruncateModule } from 'ng2-truncate';
import { MetaModule } from '@ngx-meta/core';
import { PreventDoubleSubmitModule } from 'ngx-prevent-double-submission';

// Core App
import { AppComponent } from './app.component';
import { CoreInterceptor } from './interceptor';
import { environment } from '../environments/environment';

// Modules
import { SharedModule } from './shared/shared.module';
import { CoreModule } from './services/core.module';
import { LayoutModule } from './layouts/layout.module';

// Sections
import { COMPONENTS } from './components/index';
import { ROUTES } from './app.routes';

// Guards
import { AuthGuard } from './guards/auth.guard';
import { CreditGuard } from './guards/credit.guard';

@NgModule({
  declarations: [
    AppComponent,
    COMPONENTS
  ],
  imports: [
    CommonModule,
    FormsModule,
    AngularFireModule.initializeApp(environment.firebase),
    AngularFireAuthModule,
    AngularFirestoreModule,
    AngularFireStorageModule,

    // This is the Angular google maps module causing issue on build
    AgmCoreModule.forRoot({
      apiKey: environment.googleApiKey,
      libraries: ['places']
    }),

    GooglePlaceModule,
    LayoutModule,
    BrowserModule.withServerTransition({ appId: 'test123' }),
    PreventDoubleSubmitModule.forRoot(),
    TruncateModule,
    MetaModule.forRoot(),
    HttpClientModule,
    NgxErrorsModule,
    ReactiveFormsModule,
    RouterModule.forRoot(ROUTES),
    CoreModule,
    SharedModule,
    ServiceWorkerModule.register('/ngsw-worker.js', { enabled: environment.production })
  ],
  providers: [
    { provide: HTTP_INTERCEPTORS, useClass: CoreInterceptor, multi: true },
    AuthGuard,
    CreditGuard,
    AngularFireDatabase
  ],
  exports: [ RouterModule ],
  schemas: [ NO_ERRORS_SCHEMA, CUSTOM_ELEMENTS_SCHEMA ],
  bootstrap: [ AppComponent ]
})
export class AppModule { }

Command I run: serve: npm run build && firebase serve --only functions

Is their a way for third parties like angular google maps (agm) and ngxErrors etc to work when building and then serving the angular universal app?