isScrollParent.js.flow 349 Bytes
// @flow
import getComputedStyle from './getComputedStyle';

export default function isScrollParent(element: HTMLElement): boolean {
  // Firefox wants us to check `-x` and `-y` variations as well
  const { overflow, overflowX, overflowY } = getComputedStyle(element);
  return /auto|scroll|overlay|hidden/.test(overflow + overflowY + overflowX);
}