function isShadowInclusiveAncestor(ancestor, node) {
  while (isNode(node)) {
    if (node === ancestor) {
      return true;
    }

    if (isShadowRoot(node)) {
      node = node.host;
    } else {
      node = domSymbolTree.parent(node);
    }
  }

  return false;
}
function isShadowInclusiveAncestor(ancestor, node) {
  while (isNode(node)) {
    if (node === ancestor) {
      return true;
    }

    if (isShadowRoot(node)) {
      node = node.host;
    } else {
      node = domSymbolTree.parent(node);
    }
  }

  return false;
}
function isShadowInclusiveAncestor ( ancestor , node ) { while ( isNode ( node ) ) { if ( node === ancestor ) { return true ; } if ( isShadowRoot ( node ) ) { node = node . host ; } else { node = domSymbolTree . parent ( node ) ; } } return false ; }
https://dom.spec.whatwg.org/#concept-shadow-including-inclusive-ancestor
https : // dom . spec . whatwg . org / #concept - shadow - including - inclusive - ancestor