feat(core): create core module and import @ngrx/*

Author: nikosanif

src/app/app-routing.module.ts

@@ -0,0 +1,15 @@
+import { PreloadAllModules, RouterModule, Routes } from '@angular/router';
+import { NgModule } from '@angular/core';
+
+const routes: Routes = [];
+
+@NgModule({
+  imports: [
+    RouterModule.forRoot(routes, {
+      scrollPositionRestoration: 'enabled',
+      preloadingStrategy: PreloadAllModules,
+    }),
+  ],
+  exports: [RouterModule],
+})
+export class AppRoutingModule {}

src/app/app.module.ts

@@ -4,15 +4,26 @@ import { BrowserModule } from '@angular/platform-browser';
 import { NgModule } from '@angular/core';
 
 import { AppComponent } from './app/app.component';
+import { AppRoutingModule } from './app-routing.module';
+import { CoreModule } from './core/core.module';
 
 @NgModule({
   declarations: [AppComponent],
   imports: [
+    // Angular
     BrowserModule,
-    TuiRootModule,
     BrowserAnimationsModule,
+
+    // Taiga UI
+    TuiRootModule,
     TuiDialogModule,
     TuiNotificationsModule,
+
+    // Core
+    CoreModule,
+
+    // Routing
+    AppRoutingModule,
   ],
   providers: [],
   bootstrap: [AppComponent],

src/app/core/core.module.ts

@@ -0,0 +1,37 @@
+import { NgModule, Optional, SkipSelf } from '@angular/core';
+import { CommonModule } from '@angular/common';
+import { EffectsModule } from '@ngrx/effects';
+import { HttpClientModule } from '@angular/common/http';
+import { StoreDevtoolsModule } from '@ngrx/store-devtools';
+import { StoreModule } from '@ngrx/store';
+import { StoreRouterConnectingModule } from '@ngrx/router-store';
+
+import { environment } from '../../environments/environment';
+
+@NgModule({
+  imports: [
+    // Angular
+    CommonModule,
+    HttpClientModule,
+
+    // NgRx
+    StoreModule.forRoot({}, {}),
+    StoreRouterConnectingModule.forRoot(),
+    EffectsModule.forRoot([]),
+    environment.production
+      ? []
+      : StoreDevtoolsModule.instrument({ name: 'Angular Authentication' }),
+  ],
+  exports: [],
+})
+export class CoreModule {
+  constructor(
+    @Optional()
+    @SkipSelf()
+    parentModule: CoreModule
+  ) {
+    if (parentModule) {
+      throw new Error('CoreModule is already loaded. Import only once in AppModule');
+    }
+  }
+}