import { NgModule, Optional, SkipSelf } from '@angular/core';
import { NaLocalStorageService } from './storage/na-local-storage.service';
import { NaSessionStorageService } from './storage/na-session-storage.service';
// import { BrowserModule } from '@angular/platform-browser';
// import { BrowserAnimationsModule } from '@angular/platform-browser/animations';
import { NaSelectivePreloadStrategy } from './na-selective-preload-strategy';
// import { CommonModule } from '@angular/common';
import { NaMessageModule } from './message/na-message.module';
import { throwIfAlreadyLoaded } from './already-loaded';

/**
 * 把应用级、只用一次的组件收集到NaCoreModule中
 *
 * @export
 */
@NgModule({
  exports: [
    // CommonModule,
    // BrowserModule,
    // BrowserAnimationsModule,
    NaMessageModule
  ],
  providers: [
    NaLocalStorageService,
    NaSessionStorageService,
    NaSelectivePreloadStrategy,
  ]
})
export class NaCoreModule {
  constructor(@Optional() @SkipSelf() parentModule: NaCoreModule) {
    throwIfAlreadyLoaded(parentModule, 'NaCoreModule');
  }
}