Tinymce config

tinymce.init({
  selector: 'textarea',
  height: 500,
  menubar: false,
  plugins: [
    'advlist autolink lists link image charmap print preview anchor textcolor',
    'searchreplace visualblocks code fullscreen',
    'insertdatetime media table contextmenu paste code help wordcount'
  ],
  toolbar: 'insert | undo redo |  formatselect | bold italic backcolor  | alignleft aligncenter alignright alignjustify | bullist numlist outdent indent | removeformat | help',
  content_css: [
    '//fonts.googleapis.com/css?family=Lato:300,300i,400,400i',
    '//www.tinymce.com/css/codepen.min.css'],
  init_instance_callback: function (editor) {
    editor.on('KeyDown', function (e) {
      if(e.keyCode == 27) {
        let editor = tinyMCE.activeEditor
        const dom = editor.dom
        const parentBlock = tinyMCE.activeEditor.selection.getSelectedBlocks()[0]
        const containerBlock = parentBlock.parentNode.nodeName == 'BODY' ? dom.getParent(parentBlock, dom.isBlock) : dom.getParent(parentBlock.parentNode, dom.isBlock)
        let newBlock = tinyMCE.activeEditor.dom.create('p')
        newBlock.innerHTML = '<br data-mce-bogus="1">';
        dom.insertAfter(newBlock, containerBlock)
        let rng = dom.createRng();
        newBlock.normalize();
        rng.setStart(newBlock, 0);
        rng.setEnd(newBlock, 0);
        editor.selection.setRng(rng);
      }
    });
  }
});