change TransferState import

src/app/init.service.ts

@@ -9,7 +9,7 @@ import { select, Store } from '@ngrx/store';
 import { CheckAuthenticationTokenAction } from './core/auth/auth.actions';
 import { CorrelationIdService } from './correlation-id/correlation-id.service';
 import { APP_INITIALIZER, Inject, Provider, Type } from '@angular/core';
-import { makeStateKey, TransferState } from '@angular/platform-browser';
+import { makeStateKey, TransferState } from '@angular/core';
 import {
   APP_CONFIG,
   APP_DATA_SERVICES_MAP,

src/config/app-config.interface.ts

@@ -1,5 +1,5 @@
 import { InjectionToken, Type } from '@angular/core';
-import { makeStateKey } from '@angular/platform-browser';
+import { makeStateKey } from '@angular/core';
 import { Config } from './config.interface';
 import { ServerConfig } from './server-config.interface';
 import { CacheConfig } from './cache-config.interface';

src/modules/app/browser-app.module.ts

@@ -1,6 +1,6 @@
 import { HttpClient, HttpClientModule } from '@angular/common/http';
 import { APP_ID, NgModule } from '@angular/core';
-import { makeStateKey, TransferState } from '@angular/platform-browser';
+import { makeStateKey, TransferState } from '@angular/core';
 import { BrowserAnimationsModule } from '@angular/platform-browser/animations';
 import { REQUEST } from '@nguniversal/express-engine/tokens';
 

src/modules/app/browser-init.service.ts

@@ -8,7 +8,7 @@
 import { InitService } from '../../app/init.service';
 import { Store } from '@ngrx/store';
 import { AppState } from '../../app/app.reducer';
-import { TransferState } from '@angular/platform-browser';
+import { TransferState } from '@angular/core';
 import { APP_CONFIG, APP_CONFIG_STATE, AppConfig } from '../../config/app-config.interface';
 import { DefaultAppConfig } from '../../config/default-app-config';
 import { extendEnvironmentWithAppConfig } from '../../config/config.util';

src/modules/app/server-app.module.ts

@@ -1,6 +1,6 @@
 import { HTTP_INTERCEPTORS } from '@angular/common/http';
 import { APP_ID, NgModule } from '@angular/core';
-import { TransferState } from '@angular/platform-browser';
+import { TransferState } from '@angular/core';
 import { NoopAnimationsModule } from '@angular/platform-browser/animations';
 import { ServerModule, ServerTransferStateModule } from '@angular/platform-server';
 

src/modules/app/server-init.service.ts

@@ -8,7 +8,7 @@
 import { InitService } from '../../app/init.service';
 import { Store } from '@ngrx/store';
 import { AppState } from '../../app/app.reducer';
-import { TransferState } from '@angular/platform-browser';
+import { TransferState } from '@angular/core';
 import { CorrelationIdService } from '../../app/correlation-id/correlation-id.service';
 import { APP_CONFIG, APP_CONFIG_STATE, AppConfig } from '../../config/app-config.interface';
 import { environment } from '../../environments/environment';

src/ngx-translate-loaders/ngx-translate-state.ts

@@ -1,4 +1,4 @@
-import { makeStateKey } from '@angular/platform-browser';
+import { makeStateKey } from '@angular/core';
 
 /**
  * Represents ngx-translate messages in different languages in the TransferState

src/ngx-translate-loaders/translate-browser.loader.ts

@@ -1,6 +1,6 @@
 import { TranslateLoader } from '@ngx-translate/core';
 import { HttpClient } from '@angular/common/http';
-import { TransferState } from '@angular/platform-browser';
+import { TransferState } from '@angular/core';
 import { NGX_TRANSLATE_STATE, NgxTranslateState } from './ngx-translate-state';
 import { hasValue } from '../app/shared/empty.util';
 import { map } from 'rxjs/operators';

src/ngx-translate-loaders/translate-server.loader.ts

@@ -1,7 +1,7 @@
 import { TranslateLoader } from '@ngx-translate/core';
 import { Observable, of as observableOf } from 'rxjs';
 import { readFileSync } from 'fs';
-import { TransferState } from '@angular/platform-browser';
+import { TransferState } from '@angular/core';
 import { NGX_TRANSLATE_STATE, NgxTranslateState } from './ngx-translate-state';
 
 /**