text: /**
   * @license Copyright (c) 2003-2020, CKSource - Frederico Knabben. All rights reserved.
   * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license
   */
  
  /* globals document */
  
  import MarkdownDataProcessor from '../../../src/gfmdataprocessor';
  import { stringify, parse } from '@ckeditor/ckeditor5-engine/src/dev-utils/view';
  
  const markdownTextArea = document.getElementById( 'markdown' );
  const viewTextArea = document.getElementById( 'view' );
  const dataProcessor = new MarkdownDataProcessor();
  
  document.getElementById( 'button_to_view' ).addEventListener( 'click', convertToView );
  document.getElementById( 'button_to_md' ).addEventListener( 'click', convertToMarkdown );
  
  markdownTextArea.value = '### Header\n\nFoo bar baz biz.';
  convertToView();
  
  function convertToView() {
  	const markdown = markdownTextArea.value;
  
  	viewTextArea.value = stringify( dataProcessor.toView( markdown ) );
  }
  
  function convertToMarkdown() {
  	const viewText = viewTextArea.value;
  
  	markdownTextArea.value = dataProcessor.toData( parse( viewText ) );
  }
  