text: const BLACKLIST = ['template', 'script', 'style'];
  
  function isHidable(node) {
    return node.nodeType === 1 && BLACKLIST.indexOf(node.tagName.toLowerCase()) === -1;
  }
  
  function siblings(container, mount, callback) {
    mount = [].concat(mount); // eslint-disable-line no-param-reassign
  
    [].forEach.call(container.children, node => {
      if (mount.indexOf(node) === -1 && isHidable(node)) {
        callback(node);
      }
    });
  }
  
  export function ariaHidden(show, node) {
    if (!node) {
      return;
    }
  
    if (show) {
      node.setAttribute('aria-hidden', 'true');
    } else {
      node.removeAttribute('aria-hidden');
    }
  }
  export function hideSiblings(container, mountNode) {
    siblings(container, mountNode, node => ariaHidden(true, node));
  }
  export function showSiblings(container, mountNode) {
    siblings(container, mountNode, node => ariaHidden(false, node));
  }