@arturovt there was indeed an issue with resolving store.NgxsModule.forFeature([RouterState]) in both CommonJS and UMD bundles, for which I included a fix in #32619. With those fixes, the compilation no longer fails 😃

Just to add in here, I have just tested this repo with Angular 8.2.0-next.2 and it has the same build failures. In the referenced firebase issue it was suggested that this would be fixed by PR #30591 but this PR seems to have been merged, closed (although there seem to be more subsequent commits on it?) and is part of the Angular 8.2.0-next.2 package. The issue is unfortunately still present in this version.

@JoostK great, dank je wel 😃

@alxhub @AndrewKushnir Angular 9.beta + NGXS works now, but @ngxs/router-plugin not working with Ivy

for reproduction

app.module.ts

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

import { AppComponent } from './app.component';
import { StoreIvyModule } from './store-ivy.module';

@NgModule({
  declarations: [AppComponent],
  imports: [
    BrowserModule,
    StoreIvyModule,
    RouterModule.forRoot([{ path: '', component: AppComponent }])
  ],
  bootstrap: [AppComponent]
})
export class AppModule {}

app.state.ts

import { State } from '@ngxs/store';

@State<string[]>({
  name: 'app',
  defaults: []
})
export class AppState {}

store-ivy.module.ts

import { NgModule } from '@angular/core';
import { NgxsModule } from '@ngxs/store';
import { NgxsReduxDevtoolsPluginModule } from '@ngxs/devtools-plugin';
import { NgxsFormPluginModule } from '@ngxs/form-plugin';
import { NgxsLoggerPluginModule } from '@ngxs/logger-plugin';
import { NgxsStoragePluginModule } from '@ngxs/storage-plugin';
import { NgxsWebsocketPluginModule } from '@ngxs/websocket-plugin';
import { NgxsRouterPluginModule } from '@ngxs/router-plugin';

import { AppState } from './app.state';

@NgModule({
  imports: [
    NgxsModule.forRoot([AppState]),
    NgxsReduxDevtoolsPluginModule.forRoot(),
    NgxsFormPluginModule.forRoot(),
    NgxsLoggerPluginModule.forRoot(),
    NgxsStoragePluginModule.forRoot(),
    NgxsWebsocketPluginModule.forRoot(),
    NgxsRouterPluginModule.forRoot()
  ],
  exports: [NgxsModule]
})
export class StoreIvyModule {}

Build successful, but runtime error after ng serve

Can't resolve all parameters for RouterState: (?, ?, ?, ?, ?, ?, ?).

But works with Angular 7, 8 with ViewEngine