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} }\n\nfunction _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }\n\nfunction _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }\n\n/*Global Closest fix for IE*/\nif (window.Element && !Element.prototype.closest) {\n  Element.prototype.closest = function (s) {\n    var matches = (this.document || this.ownerDocument).querySelectorAll(s),\n        i,\n        that = this;\n\n    do {\n      i = matches.length;\n\n      while (--i >= 0 && matches.item(i) !== that) {//\n      }\n    } while (i < 0 && (that = that.parentElement));\n    /* eslint-disable-line consistent-this */\n\n\n    return that;\n  };\n}\n/*Global ForEach fix for IE*/\n\n\nif (window.NodeList && !NodeList.prototype.forEach) {\n  NodeList.prototype.forEach = Array.prototype.forEach;\n} // NOTE: This file is auto-generated into the Legacy js as skip-navigation.js so that files stay consistent.\n// Achieved via the combineSkipNavJsForLegacy task in the gulpfile.\n\n/**\r\n * Controls the behavior of the skip navigation link\r\n */\n\n\nvar SkipNavigationController =\n/*#__PURE__*/\nfunction () {\n  function SkipNavigationController() {\n    _classCallCheck(this, SkipNavigationController);\n  }\n\n  _createClass(SkipNavigationController, null, [{\n    key: \"setFocusInMain\",\n\n    /**\r\n     * Sets the focus of the document in the first focusable item in the given main element\r\n     * @param {Node} main\r\n     */\n    value: function setFocusInMain(main) {\n      if (main !== null) {\n        var focusables = main.querySelectorAll(SkipNavigationController.focusableQueryString);\n\n        for (var i = 0; i < focusables.length; i++) {\n          if (focusables[i].closest('header') === null) {\n            focusables[i].focus();\n            break;\n          }\n        }\n      }\n    }\n  }, {\n    key: \"mainElement\",\n\n    /**\r\n     * Return the <main> tag as a node\r\n     * @return Node\r\n     */\n    get: function get() {\n      return document.querySelector(SkipNavigationController.skipNavButton.getAttribute('href'));\n    }\n    /**\r\n     * Returns the string used to find focusable elements\r\n     * @return String\r\n     */\n\n  }, {\n    key: \"focusableQueryString\",\n    get: function get() {\n      return 'button, [href], input:not([type=\"hidden\"]), select, textarea, [tabindex]:not([tabindex=\"-1\"])';\n    }\n    /**\r\n     * Returns the skip navigation button as a node.\r\n     * @return Node\r\n     */\n\n  }, {\n    key: \"skipNavButton\",\n    get: function get() {\n      return document.querySelector('.skip-navigation');\n    }\n  }]);\n\n  return SkipNavigationController;\n}(); // Export for Jest testing\n\n\nif (typeof exports !== 'undefined') {\n  module.exports = SkipNavigationController;\n} // IIFE\n\n\n(function () {\n  window.addEventListener('DOMContentLoaded', function () {\n    var skipNav = SkipNavigationController.skipNavButton;\n    var main = SkipNavigationController.mainElement;\n\n    if (skipNav !== null && main !== null) {\n      var mainId = main.id; // Resets URL hash, aids when skip nav is toggled more than once in a session.\n\n      skipNav.addEventListener('click', function () {\n        window.location.hash = '';\n      }); // Sets focus on first focusable item in main when the URL hash changes to main's id\n\n      window.addEventListener('hashchange', function () {\n        if (window.location.href.indexOf(mainId) >= 0) {\n          SkipNavigationController.setFocusInMain(main);\n        }\n      });\n    }\n  });\n})();"]}