Function isElement

aspnet-samples/AspNetForm/Scripts/bootstrap.esm.js:124–132

  element.dispatchEvent(new Event(TRANSITION_END));
};
const isElement = object => {
  if (!object || typeof object !== 'object') {
    return false;
  }
  if (typeof object.jquery !== 'undefined') {
    object = object[0];
  }
  return typeof object.nodeType !== 'undefined';
};
const getElement = object => {
  // it's a jQuery object or a node element
  if (isElement(object)) {