frontend-tutorial-framework/src/app/markdown.service.ts

import { Injectable } from '@angular/core';
import { Converter } from 'showdown';

@Injectable()
export class MarkdownService {
  private converter: Converter;
  constructor() {
    this.converter = new Converter();
  }

  convertToHtml(text: string) {
    return this.converter.makeHtml(text);
  }
}