get first parent scrollable container of a dom element

scrollparent.js

// more minimal version of https://github.com/olahol/scrollparent.js/blob/master/scrollparent.js
const regex = /(auto|scroll)/;

const style = (node, prop) =>
  getComputedStyle(node, null).getPropertyValue(prop);

const scroll = (node) =>
  regex.test(
    style(node, "overflow") +
    style(node, "overflow-y") +
    style(node, "overflow-x"));

const scrollparent = (node) =>
  !node || node===document.body
  ? document.body
  : scroll(node)
    ? node
    : scrollparent(node.parentNode);

export default scrollparent;