if ('Element' in window && 'append' in Element.prototype) {
  return;
}

/**
 * Generated by URL and opened in IE11 / Edge < 17
 * https://polyfill.io/v3/polyfill.min.js?features=DocumentFragment.prototype.append%2CElement.prototype.append
 */

/* eslint-disable */

/* Polyfill service v3.53.1
 * For detailed credits and licence information see https://github.com/financial-times/polyfill-service.
 *
 * Features requested: DocumentFragment.prototype.append,Element.prototype.append
 *
 * - _mutation, License: CC0 (required by "DocumentFragment.prototype.append", "Element.prototype.append")
 * - DocumentFragment.prototype.append, License: CC0
 * - Element.prototype.append, License: CC0 */

(function (self, undefined) {
  // _mutation
  var _mutation = (function () {
    // eslint-disable-line no-unused-vars

    function isNode(object) {
      // DOM, Level2
      if (typeof Node === 'function') {
        return object instanceof Node;
      }
      // Older browsers, check if it looks like a Node instance)
      return (
        object &&
        typeof object === 'object' &&
        object.nodeName &&
        object.nodeType >= 1 &&
        object.nodeType <= 12
      );
    }

    // http://dom.spec.whatwg.org/#mutation-method-macro
    return function mutation(nodes) {
      if (nodes.length === 1) {
        return isNode(nodes[0]) ? nodes[0] : document.createTextNode(nodes[0] + '');
      }

      var fragment = document.createDocumentFragment();
      for (var i = 0; i < nodes.length; i++) {
        fragment.appendChild(isNode(nodes[i]) ? nodes[i] : document.createTextNode(nodes[i] + ''));
      }
      return fragment;
    };
  })();

  // DocumentFragment.prototype.append
  /* global _mutation */
  DocumentFragment.prototype.append = function append() {
    this.appendChild(_mutation(arguments));
  };

  // Element.prototype.append
  /* global _mutation */
  Document.prototype.append = Element.prototype.append = function append() {
    this.appendChild(_mutation(arguments));
  };
})(
  ('object' === typeof window && window) ||
    ('object' === typeof self && self) ||
    ('object' === typeof global && global) ||
    {},
);