@popperjs/core/lib/dom-utils/instanceOf.js.flow

Tooltip and Popover Positioning Engine

// @flow
import getWindow from './getWindow';

/*:: declare function isElement(node: mixed): boolean %checks(node instanceof
  Element); */

function isElement(node) {
  const OwnElement = getWindow(node).Element;
  return node instanceof OwnElement;
}

/*:: declare function isHTMLElement(node: mixed): boolean %checks(node instanceof
  HTMLElement); */

function isHTMLElement(node) {
  const OwnElement = getWindow(node).HTMLElement;
  return node instanceof OwnElement;
}

export { isElement, isHTMLElement };