@NgModule({
  import: [MarkdownModule],
  declarations: [MyComponent],
  providers: [{
    provide: MarkdownService,
    useClass: YourMarkdownService
  }]
})
export class MyModule {}

@Component({
  template: '{{myMarkdownText|md}}'
})
export class MyComponent {
  @Input() public myMarkdownText: string;
}

@Injectable()
export class MarkdedService extends MarkdownService {
  constructor() {
    marked.setOptions({ /* configuration options */ });
  }
  public markdownToHtml(markdown: string, ...args: any[]): string {
    return marked(markdown, options);
  }
}

@Injectable()
export class MarkdownItService extends MarkdownService {
  private readonly markdownIt: MarkdownIt;
  constructor() {
    this.markdownIt = new MarkdownIt();
  }
  public markdownToHtml(markdown: string, ...args: any[]): string {
    return this.markdownIt.render(markdown);
  }
}