@coreui/react/lib/Shared/element-closest.js

CoreUI React Bootstrap 4 components

'use strict';

(function (ElementProto) {
  if (!ElementProto) {
    return;
  }
  if (typeof ElementProto.matches !== 'function') {
    ElementProto.matches = ElementProto.msMatchesSelector || ElementProto.mozMatchesSelector || ElementProto.webkitMatchesSelector || function matches(selector) {
      var element = this;
      var elements = (element.document || element.ownerDocument).querySelectorAll(selector);
      var index = 0;

      while (elements[index] && elements[index] !== element) {
        ++index;
      }

      return Boolean(elements[index]);
    };
  }

  if (typeof ElementProto.closest !== 'function') {
    ElementProto.closest = function closest(selector) {
      var element = this;

      while (element && element.nodeType === 1) {
        if (element.matches(selector)) {
          return element;
        }
        element = element.parentNode;
      }

      return null;
    };
  }
})(typeof window !== 'undefined' && window.Element.prototype);