App.CoreModule.ts

App.CoreModule.ts

import {
  ModuleWithProviders,
  NgModule,
  Optional,
  SkipSelf
} from '@angular/core';
import { CommonModule } from '@angular/common';

import { MarkdownEditorModule } from './../markdown-editor/markdown-editor.module';
import { MarkdownEditorOptions } from './../markdown-editor/markdownEditorOptions';

const editorConfig = new MarkdownEditorOptions();
editorConfig.autoDownloadFontAwesome = true;
editorConfig.initialValue = 'Hello Editor...write something amazing.';

@NgModule({
  imports: [
    MarkdownEditorModule.forRoot(editorConfig)
  ],
  declarations: [
  ],
  exports: [  ],
  providers: [  ]
})
export class CoreModule {

  /**
   * Use the check to determine if the [CoreModule] has been loaded in the parentModule (AppModule root).
   */
  constructor( @Optional() @SkipSelf() parentModule: CoreModule) {
    if (parentModule) {
      throw new Error(`CoreModule is already loaded. Import it in the AppModule only.`);
    }
  }
}