closest.js

import matches from './matches';
export default function closest(node, selector, stopAt) {
  if (node.closest && !stopAt) node.closest(selector);
  var nextNode = node;

  do {
    if (matches(nextNode, selector)) return nextNode;
    nextNode = nextNode.parentElement;
  } while (nextNode && nextNode !== stopAt && nextNode.nodeType === document.ELEMENT_NODE);

  return null;
}