mercury_editor-2.0.x-dev/source/js/component-form.js

((Drupal, once) => {
  /**
   * Attaches the behavior to the edit screen.
   */
  Drupal.behaviors.mercuryEditorComponentForm = {
    attach: function(context, _settings) {
      if (context.classList.contains('layout-paragraphs-component-form')) {
        const layoutSelect = context.querySelector('.layout-select input[type="radio"]:checked');
        if (layoutSelect) {
          layoutSelect.focus();
        }
      }
      const form = once('me-component-form', 'mercury-dialog .layout-paragraphs-component-form')[0];
      if (form) {
        form.closest('mercury-dialog').addEventListener('open', (e) => {
          const dialog = e.target.shadowRoot.querySelector('dialog');
          const w = dialog.offsetWidth + 'px';
          const h = dialog.offsetHeight + 'px';
          e.target.style.setProperty('--me-dialog-width-default', w);
          e.target.style.setProperty('--me-dialog-height-default', h);
        });
      }
    }
  }

})(Drupal, once)