editor.component.ts

  loadCkEditor() {
    const script = this._renderer2.createElement('script');
    script.type = 'application/javascript';
    script.src =
      'https://cdn.ckeditor.com/ckeditor5/12.4.0/classic/ckeditor.js';
    script.text = `
      ${(script.onload = async () => {
        const CKEditor = (window as any).ClassicEditor;
        const editor = await CKEditor.create(
          document.querySelector('#editor'),
          {
            toolbar: [
              'heading',
              '|',
              'bold',
              'italic',
              'link',
              'bulletedList',
              'numberedList',
              'blockQuote',
              'insertTable',
              'undo',
              'redo'
            ]
          }
        );
        editor.model.document.on('change', () => {
          this.ckEditorData = JSON.stringify(editor.getData());
        });
      })}
    `;

    this._renderer2.appendChild(this._document.body, script);
  }