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public/js/bootstrap.bundle.js
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 /*!
   * Bootstrap v4.3.1 (https://getbootstrap.com/)
   * Copyright 2011-2019 The Bootstrap Authors (https://github.com/twbs/bootstrap/graphs/contributors)
   * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
   */
 (function (global, factory) {
   typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('jquery')) :
   typeof define === 'function' && define.amd ? define(['exports', 'jquery'], factory) :
   (global = global || self, factory(global.bootstrap = {}, global.jQuery));
 }(this, function (exports, $) { 'use strict';
 
   $ = $ && $.hasOwnProperty('default') ? $['default'] : $;
 
   function _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);
     }
   }
 
   function _createClass(Constructor, protoProps, staticProps) {
     if (protoProps) _defineProperties(Constructor.prototype, protoProps);
     if (staticProps) _defineProperties(Constructor, staticProps);
     return Constructor;
   }
 
   function _defineProperty(obj, key, value) {
     if (key in obj) {
       Object.defineProperty(obj, key, {
         value: value,
         enumerable: true,
         configurable: true,
         writable: true
       });
     } else {
       obj[key] = value;
     }
 
     return obj;
   }
 
   function _objectSpread(target) {
     for (var i = 1; i < arguments.length; i++) {
       var source = arguments[i] != null ? arguments[i] : {};
       var ownKeys = Object.keys(source);
 
       if (typeof Object.getOwnPropertySymbols === 'function') {
         ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) {
           return Object.getOwnPropertyDescriptor(source, sym).enumerable;
         }));
       }
 
       ownKeys.forEach(function (key) {
         _defineProperty(target, key, source[key]);
       });
     }
 
     return target;
   }
 
   function _inheritsLoose(subClass, superClass) {
     subClass.prototype = Object.create(superClass.prototype);
     subClass.prototype.constructor = subClass;
     subClass.__proto__ = superClass;
   }
 
   /**
    * --------------------------------------------------------------------------
    * Bootstrap (v4.3.1): util.js
    * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
    * --------------------------------------------------------------------------
    */
   /**
    * ------------------------------------------------------------------------
    * Private TransitionEnd Helpers
    * ------------------------------------------------------------------------
    */
 
   var TRANSITION_END = 'transitionend';
   var MAX_UID = 1000000;
   var MILLISECONDS_MULTIPLIER = 1000; // Shoutout AngusCroll (https://goo.gl/pxwQGp)
 
   function toType(obj) {
     return {}.toString.call(obj).match(/\s([a-z]+)/i)[1].toLowerCase();
   }
 
   function getSpecialTransitionEndEvent() {
     return {
       bindType: TRANSITION_END,
       delegateType: TRANSITION_END,
       handle: function handle(event) {
         if ($(event.target).is(this)) {
           return event.handleObj.handler.apply(this, arguments); // eslint-disable-line prefer-rest-params
         }
 
         return undefined; // eslint-disable-line no-undefined
       }
     };
   }
 
   function transitionEndEmulator(duration) {
     var _this = this;
 
     var called = false;
     $(this).one(Util.TRANSITION_END, function () {
       called = true;
     });
     setTimeout(function () {
       if (!called) {
         Util.triggerTransitionEnd(_this);
       }
     }, duration);
     return this;
   }
 
   function setTransitionEndSupport() {
     $.fn.emulateTransitionEnd = transitionEndEmulator;
     $.event.special[Util.TRANSITION_END] = getSpecialTransitionEndEvent();
   }
   /**
    * --------------------------------------------------------------------------
    * Public Util Api
    * --------------------------------------------------------------------------
    */
 
 
   var Util = {
     TRANSITION_END: 'bsTransitionEnd',
     getUID: function getUID(prefix) {
       do {
         // eslint-disable-next-line no-bitwise
         prefix += ~~(Math.random() * MAX_UID); // "~~" acts like a faster Math.floor() here
       } while (document.getElementById(prefix));
 
       return prefix;
     },
     getSelectorFromElement: function getSelectorFromElement(element) {
       var selector = element.getAttribute('data-target');
 
       if (!selector || selector === '#') {
         var hrefAttr = element.getAttribute('href');
         selector = hrefAttr && hrefAttr !== '#' ? hrefAttr.trim() : '';
       }
 
       try {
         return document.querySelector(selector) ? selector : null;
       } catch (err) {
         return null;
       }
     },
     getTransitionDurationFromElement: function getTransitionDurationFromElement(element) {
       if (!element) {
         return 0;
       } // Get transition-duration of the element
 
 
       var transitionDuration = $(element).css('transition-duration');
       var transitionDelay = $(element).css('transition-delay');
       var floatTransitionDuration = parseFloat(transitionDuration);
       var floatTransitionDelay = parseFloat(transitionDelay); // Return 0 if element or transition duration is not found
 
       if (!floatTransitionDuration && !floatTransitionDelay) {
         return 0;
       } // If multiple durations are defined, take the first
 
 
       transitionDuration = transitionDuration.split(',')[0];
       transitionDelay = transitionDelay.split(',')[0];
       return (parseFloat(transitionDuration) + parseFloat(transitionDelay)) * MILLISECONDS_MULTIPLIER;
     },
     reflow: function reflow(element) {
       return element.offsetHeight;
     },
     triggerTransitionEnd: function triggerTransitionEnd(element) {
       $(element).trigger(TRANSITION_END);
     },
     // TODO: Remove in v5
     supportsTransitionEnd: function supportsTransitionEnd() {
       return Boolean(TRANSITION_END);
     },
     isElement: function isElement(obj) {
       return (obj[0] || obj).nodeType;
     },
     typeCheckConfig: function typeCheckConfig(componentName, config, configTypes) {
       for (var property in configTypes) {
         if (Object.prototype.hasOwnProperty.call(configTypes, property)) {
           var expectedTypes = configTypes[property];
           var value = config[property];
           var valueType = value && Util.isElement(value) ? 'element' : toType(value);
 
           if (!new RegExp(expectedTypes).test(valueType)) {
             throw new Error(componentName.toUpperCase() + ": " + ("Option \"" + property + "\" provided type \"" + valueType + "\" ") + ("but expected type \"" + expectedTypes + "\"."));
           }
         }
       }
     },
     findShadowRoot: function findShadowRoot(element) {
       if (!document.documentElement.attachShadow) {
         return null;
       } // Can find the shadow root otherwise it'll return the document
 
 
       if (typeof element.getRootNode === 'function') {
         var root = element.getRootNode();
         return root instanceof ShadowRoot ? root : null;
       }
 
       if (element instanceof ShadowRoot) {
         return element;
       } // when we don't find a shadow root
 
 
       if (!element.parentNode) {
         return null;
       }
 
       return Util.findShadowRoot(element.parentNode);
     }
   };
   setTransitionEndSupport();
 
   /**
    * ------------------------------------------------------------------------
    * Constants
    * ------------------------------------------------------------------------
    */
 
   var NAME = 'alert';
   var VERSION = '4.3.1';
   var DATA_KEY = 'bs.alert';
   var EVENT_KEY = "." + DATA_KEY;
   var DATA_API_KEY = '.data-api';
   var JQUERY_NO_CONFLICT = $.fn[NAME];
   var Selector = {
     DISMISS: '[data-dismiss="alert"]'
   };
   var Event = {
     CLOSE: "close" + EVENT_KEY,
     CLOSED: "closed" + EVENT_KEY,
     CLICK_DATA_API: "click" + EVENT_KEY + DATA_API_KEY
   };
   var ClassName = {
     ALERT: 'alert',
     FADE: 'fade',
     SHOW: 'show'
     /**
      * ------------------------------------------------------------------------
      * Class Definition
      * ------------------------------------------------------------------------
      */
 
   };
 
   var Alert =
   /*#__PURE__*/
   function () {
     function Alert(element) {
       this._element = element;
     } // Getters
 
 
     var _proto = Alert.prototype;
 
     // Public
     _proto.close = function close(element) {
       var rootElement = this._element;
 
       if (element) {
         rootElement = this._getRootElement(element);
       }
 
       var customEvent = this._triggerCloseEvent(rootElement);
 
       if (customEvent.isDefaultPrevented()) {
         return;
       }
 
       this._removeElement(rootElement);
     };
 
     _proto.dispose = function dispose() {
       $.removeData(this._element, DATA_KEY);
       this._element = null;
     } // Private
     ;
 
     _proto._getRootElement = function _getRootElement(element) {
       var selector = Util.getSelectorFromElement(element);
       var parent = false;
 
       if (selector) {
         parent = document.querySelector(selector);
       }
 
       if (!parent) {
         parent = $(element).closest("." + ClassName.ALERT)[0];
       }
 
       return parent;
     };
 
     _proto._triggerCloseEvent = function _triggerCloseEvent(element) {
       var closeEvent = $.Event(Event.CLOSE);
       $(element).trigger(closeEvent);
       return closeEvent;
     };
 
     _proto._removeElement = function _removeElement(element) {
       var _this = this;
 
       $(element).removeClass(ClassName.SHOW);
 
       if (!$(element).hasClass(ClassName.FADE)) {
         this._destroyElement(element);
 
         return;
       }
 
       var transitionDuration = Util.getTransitionDurationFromElement(element);
       $(element).one(Util.TRANSITION_END, function (event) {
         return _this._destroyElement(element, event);
       }).emulateTransitionEnd(transitionDuration);
     };
 
     _proto._destroyElement = function _destroyElement(element) {
       $(element).detach().trigger(Event.CLOSED).remove();
     } // Static
     ;
 
     Alert._jQueryInterface = function _jQueryInterface(config) {
       return this.each(function () {
         var $element = $(this);
         var data = $element.data(DATA_KEY);
 
         if (!data) {
           data = new Alert(this);
           $element.data(DATA_KEY, data);
         }
 
         if (config === 'close') {
           data[config](this);
         }
       });
     };
 
     Alert._handleDismiss = function _handleDismiss(alertInstance) {
       return function (event) {
         if (event) {
           event.preventDefault();
         }
 
         alertInstance.close(this);
       };
     };
 
     _createClass(Alert, null, [{
       key: "VERSION",
       get: function get() {
         return VERSION;
       }
     }]);
 
     return Alert;
   }();
   /**
    * ------------------------------------------------------------------------
    * Data Api implementation
    * ------------------------------------------------------------------------
    */
 
 
   $(document).on(Event.CLICK_DATA_API, Selector.DISMISS, Alert._handleDismiss(new Alert()));
   /**
    * ------------------------------------------------------------------------
    * jQuery
    * ------------------------------------------------------------------------
    */
 
   $.fn[NAME] = Alert._jQueryInterface;
   $.fn[NAME].Constructor = Alert;
 
   $.fn[NAME].noConflict = function () {
     $.fn[NAME] = JQUERY_NO_CONFLICT;
     return Alert._jQueryInterface;
   };
 
   /**
    * ------------------------------------------------------------------------
    * Constants
    * ------------------------------------------------------------------------
    */
 
   var NAME$1 = 'button';
   var VERSION$1 = '4.3.1';
   var DATA_KEY$1 = 'bs.button';
   var EVENT_KEY$1 = "." + DATA_KEY$1;
   var DATA_API_KEY$1 = '.data-api';
   var JQUERY_NO_CONFLICT$1 = $.fn[NAME$1];
   var ClassName$1 = {
     ACTIVE: 'active',
     BUTTON: 'btn',
     FOCUS: 'focus'
   };
   var Selector$1 = {
     DATA_TOGGLE_CARROT: '[data-toggle^="button"]',
     DATA_TOGGLE: '[data-toggle="buttons"]',
     INPUT: 'input:not([type="hidden"])',
     ACTIVE: '.active',
     BUTTON: '.btn'
   };
   var Event$1 = {
     CLICK_DATA_API: "click" + EVENT_KEY$1 + DATA_API_KEY$1,
     FOCUS_BLUR_DATA_API: "focus" + EVENT_KEY$1 + DATA_API_KEY$1 + " " + ("blur" + EVENT_KEY$1 + DATA_API_KEY$1)
     /**
      * ------------------------------------------------------------------------
      * Class Definition
      * ------------------------------------------------------------------------
      */
 
   };
 
   var Button =
   /*#__PURE__*/
   function () {
     function Button(element) {
       this._element = element;
     } // Getters
 
 
     var _proto = Button.prototype;
 
     // Public
     _proto.toggle = function toggle() {
       var triggerChangeEvent = true;
       var addAriaPressed = true;
       var rootElement = $(this._element).closest(Selector$1.DATA_TOGGLE)[0];
 
       if (rootElement) {
         var input = this._element.querySelector(Selector$1.INPUT);
 
         if (input) {
           if (input.type === 'radio') {
             if (input.checked && this._element.classList.contains(ClassName$1.ACTIVE)) {
               triggerChangeEvent = false;
             } else {
               var activeElement = rootElement.querySelector(Selector$1.ACTIVE);
 
               if (activeElement) {
                 $(activeElement).removeClass(ClassName$1.ACTIVE);
               }
             }
           }
 
           if (triggerChangeEvent) {
             if (input.hasAttribute('disabled') || rootElement.hasAttribute('disabled') || input.classList.contains('disabled') || rootElement.classList.contains('disabled')) {
               return;
             }
 
             input.checked = !this._element.classList.contains(ClassName$1.ACTIVE);
             $(input).trigger('change');
           }
 
           input.focus();
           addAriaPressed = false;
         }
       }
 
       if (addAriaPressed) {
         this._element.setAttribute('aria-pressed', !this._element.classList.contains(ClassName$1.ACTIVE));
       }
 
       if (triggerChangeEvent) {
         $(this._element).toggleClass(ClassName$1.ACTIVE);
       }
     };
 
     _proto.dispose = function dispose() {
       $.removeData(this._element, DATA_KEY$1);
       this._element = null;
     } // Static
     ;
 
     Button._jQueryInterface = function _jQueryInterface(config) {
       return this.each(function () {
         var data = $(this).data(DATA_KEY$1);
 
         if (!data) {
           data = new Button(this);
           $(this).data(DATA_KEY$1, data);
         }
 
         if (config === 'toggle') {
           data[config]();
         }
       });
     };
 
     _createClass(Button, null, [{
       key: "VERSION",
       get: function get() {
         return VERSION$1;
       }
     }]);
 
     return Button;
   }();
   /**
    * ------------------------------------------------------------------------
    * Data Api implementation
    * ------------------------------------------------------------------------
    */
 
 
   $(document).on(Event$1.CLICK_DATA_API, Selector$1.DATA_TOGGLE_CARROT, function (event) {
     event.preventDefault();
     var button = event.target;
 
     if (!$(button).hasClass(ClassName$1.BUTTON)) {
       button = $(button).closest(Selector$1.BUTTON);
     }
 
     Button._jQueryInterface.call($(button), 'toggle');
   }).on(Event$1.FOCUS_BLUR_DATA_API, Selector$1.DATA_TOGGLE_CARROT, function (event) {
     var button = $(event.target).closest(Selector$1.BUTTON)[0];
     $(button).toggleClass(ClassName$1.FOCUS, /^focus(in)?$/.test(event.type));
   });
   /**
    * ------------------------------------------------------------------------
    * jQuery
    * ------------------------------------------------------------------------
    */
 
   $.fn[NAME$1] = Button._jQueryInterface;
   $.fn[NAME$1].Constructor = Button;
 
   $.fn[NAME$1].noConflict = function () {
     $.fn[NAME$1] = JQUERY_NO_CONFLICT$1;
     return Button._jQueryInterface;
   };
 
   /**
    * ------------------------------------------------------------------------
    * Constants
    * ------------------------------------------------------------------------
    */
 
   var NAME$2 = 'carousel';
   var VERSION$2 = '4.3.1';
   var DATA_KEY$2 = 'bs.carousel';
   var EVENT_KEY$2 = "." + DATA_KEY$2;
   var DATA_API_KEY$2 = '.data-api';
   var JQUERY_NO_CONFLICT$2 = $.fn[NAME$2];
   var ARROW_LEFT_KEYCODE = 37; // KeyboardEvent.which value for left arrow key
 
   var ARROW_RIGHT_KEYCODE = 39; // KeyboardEvent.which value for right arrow key
 
   var TOUCHEVENT_COMPAT_WAIT = 500; // Time for mouse compat events to fire after touch
 
   var SWIPE_THRESHOLD = 40;
   var Default = {
     interval: 5000,
     keyboard: true,
     slide: false,
     pause: 'hover',
     wrap: true,
     touch: true
   };
   var DefaultType = {
     interval: '(number|boolean)',
     keyboard: 'boolean',
     slide: '(boolean|string)',
     pause: '(string|boolean)',
     wrap: 'boolean',
     touch: 'boolean'
   };
   var Direction = {
     NEXT: 'next',
     PREV: 'prev',
     LEFT: 'left',
     RIGHT: 'right'
   };
   var Event$2 = {
     SLIDE: "slide" + EVENT_KEY$2,
     SLID: "slid" + EVENT_KEY$2,
     KEYDOWN: "keydown" + EVENT_KEY$2,
     MOUSEENTER: "mouseenter" + EVENT_KEY$2,
     MOUSELEAVE: "mouseleave" + EVENT_KEY$2,
     TOUCHSTART: "touchstart" + EVENT_KEY$2,
     TOUCHMOVE: "touchmove" + EVENT_KEY$2,
     TOUCHEND: "touchend" + EVENT_KEY$2,
     POINTERDOWN: "pointerdown" + EVENT_KEY$2,
     POINTERUP: "pointerup" + EVENT_KEY$2,
     DRAG_START: "dragstart" + EVENT_KEY$2,
     LOAD_DATA_API: "load" + EVENT_KEY$2 + DATA_API_KEY$2,
     CLICK_DATA_API: "click" + EVENT_KEY$2 + DATA_API_KEY$2
   };
   var ClassName$2 = {
     CAROUSEL: 'carousel',
     ACTIVE: 'active',
     SLIDE: 'slide',
     RIGHT: 'carousel-item-right',
     LEFT: 'carousel-item-left',
     NEXT: 'carousel-item-next',
     PREV: 'carousel-item-prev',
     ITEM: 'carousel-item',
     POINTER_EVENT: 'pointer-event'
   };
   var Selector$2 = {
     ACTIVE: '.active',
     ACTIVE_ITEM: '.active.carousel-item',
     ITEM: '.carousel-item',
     ITEM_IMG: '.carousel-item img',
     NEXT_PREV: '.carousel-item-next, .carousel-item-prev',
     INDICATORS: '.carousel-indicators',
     DATA_SLIDE: '[data-slide], [data-slide-to]',
     DATA_RIDE: '[data-ride="carousel"]'
   };
   var PointerType = {
     TOUCH: 'touch',
     PEN: 'pen'
     /**
      * ------------------------------------------------------------------------
      * Class Definition
      * ------------------------------------------------------------------------
      */
 
   };
 
   var Carousel =
   /*#__PURE__*/
   function () {
     function Carousel(element, config) {
       this._items = null;
       this._interval = null;
       this._activeElement = null;
       this._isPaused = false;
       this._isSliding = false;
       this.touchTimeout = null;
       this.touchStartX = 0;
       this.touchDeltaX = 0;
       this._config = this._getConfig(config);
       this._element = element;
       this._indicatorsElement = this._element.querySelector(Selector$2.INDICATORS);
       this._touchSupported = 'ontouchstart' in document.documentElement || navigator.maxTouchPoints > 0;
       this._pointerEvent = Boolean(window.PointerEvent || window.MSPointerEvent);
 
       this._addEventListeners();
     } // Getters
 
 
     var _proto = Carousel.prototype;
 
     // Public
     _proto.next = function next() {
       if (!this._isSliding) {
         this._slide(Direction.NEXT);
       }
     };
 
     _proto.nextWhenVisible = function nextWhenVisible() {
       // Don't call next when the page isn't visible
       // or the carousel or its parent isn't visible
       if (!document.hidden && $(this._element).is(':visible') && $(this._element).css('visibility') !== 'hidden') {
         this.next();
       }
     };
 
     _proto.prev = function prev() {
       if (!this._isSliding) {
         this._slide(Direction.PREV);
       }
     };
 
     _proto.pause = function pause(event) {
       if (!event) {
         this._isPaused = true;
       }
 
       if (this._element.querySelector(Selector$2.NEXT_PREV)) {
         Util.triggerTransitionEnd(this._element);
         this.cycle(true);
       }
 
       clearInterval(this._interval);
       this._interval = null;
     };
 
     _proto.cycle = function cycle(event) {
       if (!event) {
         this._isPaused = false;
       }
 
       if (this._interval) {
         clearInterval(this._interval);
         this._interval = null;
       }
 
       if (this._config.interval && !this._isPaused) {
         this._interval = setInterval((document.visibilityState ? this.nextWhenVisible : this.next).bind(this), this._config.interval);
       }
     };
 
     _proto.to = function to(index) {
       var _this = this;
 
       this._activeElement = this._element.querySelector(Selector$2.ACTIVE_ITEM);
 
       var activeIndex = this._getItemIndex(this._activeElement);
 
       if (index > this._items.length - 1 || index < 0) {
         return;
       }
 
       if (this._isSliding) {
         $(this._element).one(Event$2.SLID, function () {
           return _this.to(index);
         });
         return;
       }
 
       if (activeIndex === index) {
         this.pause();
         this.cycle();
         return;
       }
 
       var direction = index > activeIndex ? Direction.NEXT : Direction.PREV;
 
       this._slide(direction, this._items[index]);
     };
 
     _proto.dispose = function dispose() {
       $(this._element).off(EVENT_KEY$2);
       $.removeData(this._element, DATA_KEY$2);
       this._items = null;
       this._config = null;
       this._element = null;
       this._interval = null;
       this._isPaused = null;
       this._isSliding = null;
       this._activeElement = null;
       this._indicatorsElement = null;
     } // Private
     ;
 
     _proto._getConfig = function _getConfig(config) {
       config = _objectSpread({}, Default, config);
       Util.typeCheckConfig(NAME$2, config, DefaultType);
       return config;
     };
 
     _proto._handleSwipe = function _handleSwipe() {
       var absDeltax = Math.abs(this.touchDeltaX);
 
       if (absDeltax <= SWIPE_THRESHOLD) {
         return;
       }
 
       var direction = absDeltax / this.touchDeltaX; // swipe left
 
       if (direction > 0) {
         this.prev();
       } // swipe right
 
 
       if (direction < 0) {
         this.next();
       }
     };
 
     _proto._addEventListeners = function _addEventListeners() {
       var _this2 = this;
 
       if (this._config.keyboard) {
         $(this._element).on(Event$2.KEYDOWN, function (event) {
           return _this2._keydown(event);
         });
       }
 
       if (this._config.pause === 'hover') {
         $(this._element).on(Event$2.MOUSEENTER, function (event) {
           return _this2.pause(event);
         }).on(Event$2.MOUSELEAVE, function (event) {
           return _this2.cycle(event);
         });
       }
 
       if (this._config.touch) {
         this._addTouchEventListeners();
       }
     };
 
     _proto._addTouchEventListeners = function _addTouchEventListeners() {
       var _this3 = this;
 
       if (!this._touchSupported) {
         return;
       }
 
       var start = function start(event) {
         if (_this3._pointerEvent && PointerType[event.originalEvent.pointerType.toUpperCase()]) {
           _this3.touchStartX = event.originalEvent.clientX;
         } else if (!_this3._pointerEvent) {
           _this3.touchStartX = event.originalEvent.touches[0].clientX;
         }
       };
 
       var move = function move(event) {
         // ensure swiping with one touch and not pinching
         if (event.originalEvent.touches && event.originalEvent.touches.length > 1) {
           _this3.touchDeltaX = 0;
         } else {
           _this3.touchDeltaX = event.originalEvent.touches[0].clientX - _this3.touchStartX;
         }
       };
 
       var end = function end(event) {
         if (_this3._pointerEvent && PointerType[event.originalEvent.pointerType.toUpperCase()]) {
           _this3.touchDeltaX = event.originalEvent.clientX - _this3.touchStartX;
         }
 
         _this3._handleSwipe();
 
         if (_this3._config.pause === 'hover') {
           // If it's a touch-enabled device, mouseenter/leave are fired as
           // part of the mouse compatibility events on first tap - the carousel
           // would stop cycling until user tapped out of it;
           // here, we listen for touchend, explicitly pause the carousel
           // (as if it's the second time we tap on it, mouseenter compat event
           // is NOT fired) and after a timeout (to allow for mouse compatibility
           // events to fire) we explicitly restart cycling
           _this3.pause();
 
           if (_this3.touchTimeout) {
             clearTimeout(_this3.touchTimeout);
           }
 
           _this3.touchTimeout = setTimeout(function (event) {
             return _this3.cycle(event);
           }, TOUCHEVENT_COMPAT_WAIT + _this3._config.interval);
         }
       };
 
       $(this._element.querySelectorAll(Selector$2.ITEM_IMG)).on(Event$2.DRAG_START, function (e) {
         return e.preventDefault();
       });
 
       if (this._pointerEvent) {
         $(this._element).on(Event$2.POINTERDOWN, function (event) {
           return start(event);
         });
         $(this._element).on(Event$2.POINTERUP, function (event) {
           return end(event);
         });
 
         this._element.classList.add(ClassName$2.POINTER_EVENT);
       } else {
         $(this._element).on(Event$2.TOUCHSTART, function (event) {
           return start(event);
         });
         $(this._element).on(Event$2.TOUCHMOVE, function (event) {
           return move(event);
         });
         $(this._element).on(Event$2.TOUCHEND, function (event) {
           return end(event);
         });
       }
     };
 
     _proto._keydown = function _keydown(event) {
       if (/input|textarea/i.test(event.target.tagName)) {
         return;
       }
 
       switch (event.which) {
         case ARROW_LEFT_KEYCODE:
           event.preventDefault();
           this.prev();
           break;
 
         case ARROW_RIGHT_KEYCODE:
           event.preventDefault();
           this.next();
           break;
 
         default:
       }
     };
 
     _proto._getItemIndex = function _getItemIndex(element) {
       this._items = element && element.parentNode ? [].slice.call(element.parentNode.querySelectorAll(Selector$2.ITEM)) : [];
       return this._items.indexOf(element);
     };
 
     _proto._getItemByDirection = function _getItemByDirection(direction, activeElement) {
       var isNextDirection = direction === Direction.NEXT;
       var isPrevDirection = direction === Direction.PREV;
 
       var activeIndex = this._getItemIndex(activeElement);
 
       var lastItemIndex = this._items.length - 1;
       var isGoingToWrap = isPrevDirection && activeIndex === 0 || isNextDirection && activeIndex === lastItemIndex;
 
       if (isGoingToWrap && !this._config.wrap) {
         return activeElement;
       }
 
       var delta = direction === Direction.PREV ? -1 : 1;
       var itemIndex = (activeIndex + delta) % this._items.length;
       return itemIndex === -1 ? this._items[this._items.length - 1] : this._items[itemIndex];
     };
 
     _proto._triggerSlideEvent = function _triggerSlideEvent(relatedTarget, eventDirectionName) {
       var targetIndex = this._getItemIndex(relatedTarget);
 
       var fromIndex = this._getItemIndex(this._element.querySelector(Selector$2.ACTIVE_ITEM));
 
       var slideEvent = $.Event(Event$2.SLIDE, {
         relatedTarget: relatedTarget,
         direction: eventDirectionName,
         from: fromIndex,
         to: targetIndex
       });
       $(this._element).trigger(slideEvent);
       return slideEvent;
     };
 
     _proto._setActiveIndicatorElement = function _setActiveIndicatorElement(element) {
       if (this._indicatorsElement) {
         var indicators = [].slice.call(this._indicatorsElement.querySelectorAll(Selector$2.ACTIVE));
         $(indicators).removeClass(ClassName$2.ACTIVE);
 
         var nextIndicator = this._indicatorsElement.children[this._getItemIndex(element)];
 
         if (nextIndicator) {
           $(nextIndicator).addClass(ClassName$2.ACTIVE);
         }
       }
     };
 
     _proto._slide = function _slide(direction, element) {
       var _this4 = this;
 
       var activeElement = this._element.querySelector(Selector$2.ACTIVE_ITEM);
 
       var activeElementIndex = this._getItemIndex(activeElement);
 
       var nextElement = element || activeElement && this._getItemByDirection(direction, activeElement);
 
       var nextElementIndex = this._getItemIndex(nextElement);
 
       var isCycling = Boolean(this._interval);
       var directionalClassName;
       var orderClassName;
       var eventDirectionName;
 
       if (direction === Direction.NEXT) {
         directionalClassName = ClassName$2.LEFT;
         orderClassName = ClassName$2.NEXT;
         eventDirectionName = Direction.LEFT;
       } else {
         directionalClassName = ClassName$2.RIGHT;
         orderClassName = ClassName$2.PREV;
         eventDirectionName = Direction.RIGHT;
       }
 
       if (nextElement && $(nextElement).hasClass(ClassName$2.ACTIVE)) {
         this._isSliding = false;
         return;
       }
 
       var slideEvent = this._triggerSlideEvent(nextElement, eventDirectionName);
 
       if (slideEvent.isDefaultPrevented()) {
         return;
       }
 
       if (!activeElement || !nextElement) {
         // Some weirdness is happening, so we bail
         return;
       }
 
       this._isSliding = true;
 
       if (isCycling) {
         this.pause();
       }
 
       this._setActiveIndicatorElement(nextElement);
 
       var slidEvent = $.Event(Event$2.SLID, {
         relatedTarget: nextElement,
         direction: eventDirectionName,
         from: activeElementIndex,
         to: nextElementIndex
       });
 
       if ($(this._element).hasClass(ClassName$2.SLIDE)) {
         $(nextElement).addClass(orderClassName);
         Util.reflow(nextElement);
         $(activeElement).addClass(directionalClassName);
         $(nextElement).addClass(directionalClassName);
         var nextElementInterval = parseInt(nextElement.getAttribute('data-interval'), 10);
 
         if (nextElementInterval) {
           this._config.defaultInterval = this._config.defaultInterval || this._config.interval;
           this._config.interval = nextElementInterval;
         } else {
           this._config.interval = this._config.defaultInterval || this._config.interval;
         }
 
         var transitionDuration = Util.getTransitionDurationFromElement(activeElement);
         $(activeElement).one(Util.TRANSITION_END, function () {
           $(nextElement).removeClass(directionalClassName + " " + orderClassName).addClass(ClassName$2.ACTIVE);
           $(activeElement).removeClass(ClassName$2.ACTIVE + " " + orderClassName + " " + directionalClassName);
           _this4._isSliding = false;
           setTimeout(function () {
             return $(_this4._element).trigger(slidEvent);
           }, 0);
         }).emulateTransitionEnd(transitionDuration);
       } else {
         $(activeElement).removeClass(ClassName$2.ACTIVE);
         $(nextElement).addClass(ClassName$2.ACTIVE);
         this._isSliding = false;
         $(this._element).trigger(slidEvent);
       }
 
       if (isCycling) {
         this.cycle();
       }
     } // Static
     ;
 
     Carousel._jQueryInterface = function _jQueryInterface(config) {
       return this.each(function () {
         var data = $(this).data(DATA_KEY$2);
 
         var _config = _objectSpread({}, Default, $(this).data());
 
         if (typeof config === 'object') {
           _config = _objectSpread({}, _config, config);
         }
 
         var action = typeof config === 'string' ? config : _config.slide;
 
         if (!data) {
           data = new Carousel(this, _config);
           $(this).data(DATA_KEY$2, data);
         }
 
         if (typeof config === 'number') {
           data.to(config);
         } else if (typeof action === 'string') {
           if (typeof data[action] === 'undefined') {
             throw new TypeError("No method named \"" + action + "\"");
           }
 
           data[action]();
         } else if (_config.interval && _config.ride) {
           data.pause();
           data.cycle();
         }
       });
     };
 
     Carousel._dataApiClickHandler = function _dataApiClickHandler(event) {
       var selector = Util.getSelectorFromElement(this);
 
       if (!selector) {
         return;
       }
 
       var target = $(selector)[0];
 
       if (!target || !$(target).hasClass(ClassName$2.CAROUSEL)) {
         return;
       }
 
       var config = _objectSpread({}, $(target).data(), $(this).data());
 
       var slideIndex = this.getAttribute('data-slide-to');
 
       if (slideIndex) {
         config.interval = false;
       }
 
       Carousel._jQueryInterface.call($(target), config);
 
       if (slideIndex) {
         $(target).data(DATA_KEY$2).to(slideIndex);
       }
 
       event.preventDefault();
     };
 
     _createClass(Carousel, null, [{
       key: "VERSION",
       get: function get() {
         return VERSION$2;
       }
     }, {
       key: "Default",
       get: function get() {
         return Default;
       }
     }]);
 
     return Carousel;
   }();
   /**
    * ------------------------------------------------------------------------
    * Data Api implementation
    * ------------------------------------------------------------------------
    */
 
 
   $(document).on(Event$2.CLICK_DATA_API, Selector$2.DATA_SLIDE, Carousel._dataApiClickHandler);
   $(window).on(Event$2.LOAD_DATA_API, function () {
     var carousels = [].slice.call(document.querySelectorAll(Selector$2.DATA_RIDE));
 
     for (var i = 0, len = carousels.length; i < len; i++) {
       var $carousel = $(carousels[i]);
 
       Carousel._jQueryInterface.call($carousel, $carousel.data());
     }
   });
   /**
    * ------------------------------------------------------------------------
    * jQuery
    * ------------------------------------------------------------------------
    */
 
   $.fn[NAME$2] = Carousel._jQueryInterface;
   $.fn[NAME$2].Constructor = Carousel;
 
   $.fn[NAME$2].noConflict = function () {
     $.fn[NAME$2] = JQUERY_NO_CONFLICT$2;
     return Carousel._jQueryInterface;
   };
 
   /**
    * ------------------------------------------------------------------------
    * Constants
    * ------------------------------------------------------------------------
    */
 
   var NAME$3 = 'collapse';
   var VERSION$3 = '4.3.1';
   var DATA_KEY$3 = 'bs.collapse';
   var EVENT_KEY$3 = "." + DATA_KEY$3;
   var DATA_API_KEY$3 = '.data-api';
   var JQUERY_NO_CONFLICT$3 = $.fn[NAME$3];
   var Default$1 = {
     toggle: true,
     parent: ''
   };
   var DefaultType$1 = {
     toggle: 'boolean',
     parent: '(string|element)'
   };
   var Event$3 = {
     SHOW: "show" + EVENT_KEY$3,
     SHOWN: "shown" + EVENT_KEY$3,
     HIDE: "hide" + EVENT_KEY$3,
     HIDDEN: "hidden" + EVENT_KEY$3,
     CLICK_DATA_API: "click" + EVENT_KEY$3 + DATA_API_KEY$3
   };
   var ClassName$3 = {
     SHOW: 'show',
     COLLAPSE: 'collapse',
     COLLAPSING: 'collapsing',
     COLLAPSED: 'collapsed'
   };
   var Dimension = {
     WIDTH: 'width',
     HEIGHT: 'height'
   };
   var Selector$3 = {
     ACTIVES: '.show, .collapsing',
     DATA_TOGGLE: '[data-toggle="collapse"]'
     /**
      * ------------------------------------------------------------------------
      * Class Definition
      * ------------------------------------------------------------------------
      */
 
   };
 
   var Collapse =
   /*#__PURE__*/
   function () {
     function Collapse(element, config) {
       this._isTransitioning = false;
       this._element = element;
       this._config = this._getConfig(config);
       this._triggerArray = [].slice.call(document.querySelectorAll("[data-toggle=\"collapse\"][href=\"#" + element.id + "\"]," + ("[data-toggle=\"collapse\"][data-target=\"#" + element.id + "\"]")));
       var toggleList = [].slice.call(document.querySelectorAll(Selector$3.DATA_TOGGLE));
 
       for (var i = 0, len = toggleList.length; i < len; i++) {
         var elem = toggleList[i];
         var selector = Util.getSelectorFromElement(elem);
         var filterElement = [].slice.call(document.querySelectorAll(selector)).filter(function (foundElem) {
           return foundElem === element;
         });
 
         if (selector !== null && filterElement.length > 0) {
           this._selector = selector;
 
           this._triggerArray.push(elem);
         }
       }
 
       this._parent = this._config.parent ? this._getParent() : null;
 
       if (!this._config.parent) {
         this._addAriaAndCollapsedClass(this._element, this._triggerArray);
       }
 
       if (this._config.toggle) {
         this.toggle();
       }
     } // Getters
 
 
     var _proto = Collapse.prototype;
 
     // Public
     _proto.toggle = function toggle() {
       if ($(this._element).hasClass(ClassName$3.SHOW)) {
         this.hide();
       } else {
         this.show();
       }
     };
 
     _proto.show = function show() {
       var _this = this;
 
       if (this._isTransitioning || $(this._element).hasClass(ClassName$3.SHOW)) {
         return;
       }
 
       var actives;
       var activesData;
 
       if (this._parent) {
         actives = [].slice.call(this._parent.querySelectorAll(Selector$3.ACTIVES)).filter(function (elem) {
           if (typeof _this._config.parent === 'string') {
             return elem.getAttribute('data-parent') === _this._config.parent;
           }
 
           return elem.classList.contains(ClassName$3.COLLAPSE);
         });
 
         if (actives.length === 0) {
           actives = null;
         }
       }
 
       if (actives) {
         activesData = $(actives).not(this._selector).data(DATA_KEY$3);
 
         if (activesData && activesData._isTransitioning) {
           return;
         }
       }
 
       var startEvent = $.Event(Event$3.SHOW);
       $(this._element).trigger(startEvent);
 
       if (startEvent.isDefaultPrevented()) {
         return;
       }
 
       if (actives) {
         Collapse._jQueryInterface.call($(actives).not(this._selector), 'hide');
 
         if (!activesData) {
           $(actives).data(DATA_KEY$3, null);
         }
       }
 
       var dimension = this._getDimension();
 
       $(this._element).removeClass(ClassName$3.COLLAPSE).addClass(ClassName$3.COLLAPSING);
       this._element.style[dimension] = 0;
 
       if (this._triggerArray.length) {
         $(this._triggerArray).removeClass(ClassName$3.COLLAPSED).attr('aria-expanded', true);
       }
 
       this.setTransitioning(true);
 
       var complete = function complete() {
         $(_this._element).removeClass(ClassName$3.COLLAPSING).addClass(ClassName$3.COLLAPSE).addClass(ClassName$3.SHOW);
         _this._element.style[dimension] = '';
 
         _this.setTransitioning(false);
 
         $(_this._element).trigger(Event$3.SHOWN);
       };
 
       var capitalizedDimension = dimension[0].toUpperCase() + dimension.slice(1);
       var scrollSize = "scroll" + capitalizedDimension;
       var transitionDuration = Util.getTransitionDurationFromElement(this._element);
       $(this._element).one(Util.TRANSITION_END, complete).emulateTransitionEnd(transitionDuration);
       this._element.style[dimension] = this._element[scrollSize] + "px";
     };
 
     _proto.hide = function hide() {
       var _this2 = this;
 
       if (this._isTransitioning || !$(this._element).hasClass(ClassName$3.SHOW)) {
         return;
       }
 
       var startEvent = $.Event(Event$3.HIDE);
       $(this._element).trigger(startEvent);
 
       if (startEvent.isDefaultPrevented()) {
         return;
       }
 
       var dimension = this._getDimension();
 
       this._element.style[dimension] = this._element.getBoundingClientRect()[dimension] + "px";
       Util.reflow(this._element);
       $(this._element).addClass(ClassName$3.COLLAPSING).removeClass(ClassName$3.COLLAPSE).removeClass(ClassName$3.SHOW);
       var triggerArrayLength = this._triggerArray.length;
 
       if (triggerArrayLength > 0) {
         for (var i = 0; i < triggerArrayLength; i++) {
           var trigger = this._triggerArray[i];
           var selector = Util.getSelectorFromElement(trigger);
 
           if (selector !== null) {
             var $elem = $([].slice.call(document.querySelectorAll(selector)));
 
             if (!$elem.hasClass(ClassName$3.SHOW)) {
               $(trigger).addClass(ClassName$3.COLLAPSED).attr('aria-expanded', false);
             }
           }
         }
       }
 
       this.setTransitioning(true);
 
       var complete = function complete() {
         _this2.setTransitioning(false);
 
         $(_this2._element).removeClass(ClassName$3.COLLAPSING).addClass(ClassName$3.COLLAPSE).trigger(Event$3.HIDDEN);
       };
 
       this._element.style[dimension] = '';
       var transitionDuration = Util.getTransitionDurationFromElement(this._element);
       $(this._element).one(Util.TRANSITION_END, complete).emulateTransitionEnd(transitionDuration);
     };
 
     _proto.setTransitioning = function setTransitioning(isTransitioning) {
       this._isTransitioning = isTransitioning;
     };
 
     _proto.dispose = function dispose() {
       $.removeData(this._element, DATA_KEY$3);
       this._config = null;
       this._parent = null;
       this._element = null;
       this._triggerArray = null;
       this._isTransitioning = null;
     } // Private
     ;
 
     _proto._getConfig = function _getConfig(config) {
       config = _objectSpread({}, Default$1, config);
       config.toggle = Boolean(config.toggle); // Coerce string values
 
       Util.typeCheckConfig(NAME$3, config, DefaultType$1);
       return config;
     };
 
     _proto._getDimension = function _getDimension() {
       var hasWidth = $(this._element).hasClass(Dimension.WIDTH);
       return hasWidth ? Dimension.WIDTH : Dimension.HEIGHT;
     };
 
     _proto._getParent = function _getParent() {
       var _this3 = this;
 
       var parent;
 
       if (Util.isElement(this._config.parent)) {
         parent = this._config.parent; // It's a jQuery object
 
         if (typeof this._config.parent.jquery !== 'undefined') {
           parent = this._config.parent[0];
         }
       } else {
         parent = document.querySelector(this._config.parent);
       }
 
       var selector = "[data-toggle=\"collapse\"][data-parent=\"" + this._config.parent + "\"]";
       var children = [].slice.call(parent.querySelectorAll(selector));
       $(children).each(function (i, element) {
         _this3._addAriaAndCollapsedClass(Collapse._getTargetFromElement(element), [element]);
       });
       return parent;
     };
 
     _proto._addAriaAndCollapsedClass = function _addAriaAndCollapsedClass(element, triggerArray) {
       var isOpen = $(element).hasClass(ClassName$3.SHOW);
 
       if (triggerArray.length) {
         $(triggerArray).toggleClass(ClassName$3.COLLAPSED, !isOpen).attr('aria-expanded', isOpen);
       }
     } // Static
     ;
 
     Collapse._getTargetFromElement = function _getTargetFromElement(element) {
       var selector = Util.getSelectorFromElement(element);
       return selector ? document.querySelector(selector) : null;
     };
 
     Collapse._jQueryInterface = function _jQueryInterface(config) {
       return this.each(function () {
         var $this = $(this);
         var data = $this.data(DATA_KEY$3);
 
         var _config = _objectSpread({}, Default$1, $this.data(), typeof config === 'object' && config ? config : {});
 
         if (!data && _config.toggle && /show|hide/.test(config)) {
           _config.toggle = false;
         }
 
         if (!data) {
           data = new Collapse(this, _config);
           $this.data(DATA_KEY$3, data);
         }
 
         if (typeof config === 'string') {
           if (typeof data[config] === 'undefined') {
             throw new TypeError("No method named \"" + config + "\"");
           }
 
           data[config]();
         }
       });
     };
 
     _createClass(Collapse, null, [{
       key: "VERSION",
       get: function get() {
         return VERSION$3;
       }
     }, {
       key: "Default",
       get: function get() {
         return Default$1;
       }
     }]);
 
     return Collapse;
   }();
   /**
    * ------------------------------------------------------------------------
    * Data Api implementation
    * ------------------------------------------------------------------------
    */
 
 
   $(document).on(Event$3.CLICK_DATA_API, Selector$3.DATA_TOGGLE, function (event) {
     // preventDefault only for <a> elements (which change the URL) not inside the collapsible element
     if (event.currentTarget.tagName === 'A') {
       event.preventDefault();
     }
 
     var $trigger = $(this);
     var selector = Util.getSelectorFromElement(this);
     var selectors = [].slice.call(document.querySelectorAll(selector));
     $(selectors).each(function () {
       var $target = $(this);
       var data = $target.data(DATA_KEY$3);
       var config = data ? 'toggle' : $trigger.data();
 
       Collapse._jQueryInterface.call($target, config);
     });
   });
   /**
    * ------------------------------------------------------------------------
    * jQuery
    * ------------------------------------------------------------------------
    */
 
   $.fn[NAME$3] = Collapse._jQueryInterface;
   $.fn[NAME$3].Constructor = Collapse;
 
   $.fn[NAME$3].noConflict = function () {
     $.fn[NAME$3] = JQUERY_NO_CONFLICT$3;
     return Collapse._jQueryInterface;
   };
 
   /**!
    * @fileOverview Kickass library to create and place poppers near their reference elements.
    * @version 1.14.7
    * @license
    * Copyright (c) 2016 Federico Zivolo and contributors
    *
    * Permission is hereby granted, free of charge, to any person obtaining a copy
    * of this software and associated documentation files (the "Software"), to deal
    * in the Software without restriction, including without limitation the rights
    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
    * copies of the Software, and to permit persons to whom the Software is
    * furnished to do so, subject to the following conditions:
    *
    * The above copyright notice and this permission notice shall be included in all
    * copies or substantial portions of the Software.
    *
    * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
    * SOFTWARE.
    */
   var isBrowser = typeof window !== 'undefined' && typeof document !== 'undefined';
 
   var longerTimeoutBrowsers = ['Edge', 'Trident', 'Firefox'];
   var timeoutDuration = 0;
   for (var i = 0; i < longerTimeoutBrowsers.length; i += 1) {
     if (isBrowser && navigator.userAgent.indexOf(longerTimeoutBrowsers[i]) >= 0) {
       timeoutDuration = 1;
       break;
     }
   }
 
   function microtaskDebounce(fn) {
     var called = false;
     return function () {
       if (called) {
         return;
       }
       called = true;
       window.Promise.resolve().then(function () {
         called = false;
         fn();
       });
     };
   }
 
   function taskDebounce(fn) {
     var scheduled = false;
     return function () {
       if (!scheduled) {
         scheduled = true;
         setTimeout(function () {
           scheduled = false;
           fn();
         }, timeoutDuration);
       }
     };
   }
 
   var supportsMicroTasks = isBrowser && window.Promise;
 
   /**
   * Create a debounced version of a method, that's asynchronously deferred
   * but called in the minimum time possible.
   *
   * @method
   * @memberof Popper.Utils
   * @argument {Function} fn
   * @returns {Function}
   */
   var debounce = supportsMicroTasks ? microtaskDebounce : taskDebounce;
 
   /**
    * Check if the given variable is a function
    * @method
    * @memberof Popper.Utils
    * @argument {Any} functionToCheck - variable to check
    * @returns {Boolean} answer to: is a function?
    */
   function isFunction(functionToCheck) {
     var getType = {};
     return functionToCheck && getType.toString.call(functionToCheck) === '[object Function]';
   }
 
   /**
    * Get CSS computed property of the given element
    * @method
    * @memberof Popper.Utils
    * @argument {Eement} element
    * @argument {String} property
    */
   function getStyleComputedProperty(element, property) {
     if (element.nodeType !== 1) {
       return [];
     }
     // NOTE: 1 DOM access here
     var window = element.ownerDocument.defaultView;
     var css = window.getComputedStyle(element, null);
     return property ? css[property] : css;
   }
 
   /**
    * Returns the parentNode or the host of the element
    * @method
    * @memberof Popper.Utils
    * @argument {Element} element
    * @returns {Element} parent
    */
   function getParentNode(element) {
     if (element.nodeName === 'HTML') {
       return element;
     }
     return element.parentNode || element.host;
   }
 
   /**
    * Returns the scrolling parent of the given element
    * @method
    * @memberof Popper.Utils
    * @argument {Element} element
    * @returns {Element} scroll parent
    */
   function getScrollParent(element) {
     // Return body, `getScroll` will take care to get the correct `scrollTop` from it
     if (!element) {
       return document.body;
     }
 
     switch (element.nodeName) {
       case 'HTML':
       case 'BODY':
         return element.ownerDocument.body;
       case '#document':
         return element.body;
     }
 
     // Firefox want us to check `-x` and `-y` variations as well
 
     var _getStyleComputedProp = getStyleComputedProperty(element),
         overflow = _getStyleComputedProp.overflow,
         overflowX = _getStyleComputedProp.overflowX,
         overflowY = _getStyleComputedProp.overflowY;
 
     if (/(auto|scroll|overlay)/.test(overflow + overflowY + overflowX)) {
       return element;
     }
 
     return getScrollParent(getParentNode(element));
   }
 
   var isIE11 = isBrowser && !!(window.MSInputMethodContext && document.documentMode);
   var isIE10 = isBrowser && /MSIE 10/.test(navigator.userAgent);
 
   /**
    * Determines if the browser is Internet Explorer
    * @method
    * @memberof Popper.Utils
    * @param {Number} version to check
    * @returns {Boolean} isIE
    */
   function isIE(version) {
     if (version === 11) {
       return isIE11;
     }
     if (version === 10) {
       return isIE10;
     }
     return isIE11 || isIE10;
   }
 
   /**
    * Returns the offset parent of the given element
    * @method
    * @memberof Popper.Utils
    * @argument {Element} element
    * @returns {Element} offset parent
    */
   function getOffsetParent(element) {
     if (!element) {
       return document.documentElement;
     }
 
     var noOffsetParent = isIE(10) ? document.body : null;
 
     // NOTE: 1 DOM access here
     var offsetParent = element.offsetParent || null;
     // Skip hidden elements which don't have an offsetParent
     while (offsetParent === noOffsetParent && element.nextElementSibling) {
       offsetParent = (element = element.nextElementSibling).offsetParent;
     }
 
     var nodeName = offsetParent && offsetParent.nodeName;
 
     if (!nodeName || nodeName === 'BODY' || nodeName === 'HTML') {
       return element ? element.ownerDocument.documentElement : document.documentElement;
     }
 
     // .offsetParent will return the closest TH, TD or TABLE in case
     // no offsetParent is present, I hate this job...
     if (['TH', 'TD', 'TABLE'].indexOf(offsetParent.nodeName) !== -1 && getStyleComputedProperty(offsetParent, 'position') === 'static') {
       return getOffsetParent(offsetParent);
     }
 
     return offsetParent;
   }
 
   function isOffsetContainer(element) {
     var nodeName = element.nodeName;
 
     if (nodeName === 'BODY') {
       return false;
     }
     return nodeName === 'HTML' || getOffsetParent(element.firstElementChild) === element;
   }
 
   /**
    * Finds the root node (document, shadowDOM root) of the given element
    * @method
    * @memberof Popper.Utils
    * @argument {Element} node
    * @returns {Element} root node
    */
   function getRoot(node) {
     if (node.parentNode !== null) {
       return getRoot(node.parentNode);
     }
 
     return node;
   }
 
   /**
    * Finds the offset parent common to the two provided nodes
    * @method
    * @memberof Popper.Utils
    * @argument {Element} element1
    * @argument {Element} element2
    * @returns {Element} common offset parent
    */
   function findCommonOffsetParent(element1, element2) {
     // This check is needed to avoid errors in case one of the elements isn't defined for any reason
     if (!element1 || !element1.nodeType || !element2 || !element2.nodeType) {
       return document.documentElement;
     }
 
     // Here we make sure to give as "start" the element that comes first in the DOM
     var order = element1.compareDocumentPosition(element2) & Node.DOCUMENT_POSITION_FOLLOWING;
     var start = order ? element1 : element2;
     var end = order ? element2 : element1;
 
     // Get common ancestor container
     var range = document.createRange();
     range.setStart(start, 0);
     range.setEnd(end, 0);
     var commonAncestorContainer = range.commonAncestorContainer;
 
     // Both nodes are inside #document
 
     if (element1 !== commonAncestorContainer && element2 !== commonAncestorContainer || start.contains(end)) {
       if (isOffsetContainer(commonAncestorContainer)) {
         return commonAncestorContainer;
       }
 
       return getOffsetParent(commonAncestorContainer);
     }
 
     // one of the nodes is inside shadowDOM, find which one
     var element1root = getRoot(element1);
     if (element1root.host) {
       return findCommonOffsetParent(element1root.host, element2);
     } else {
       return findCommonOffsetParent(element1, getRoot(element2).host);
     }
   }
 
   /**
    * Gets the scroll value of the given element in the given side (top and left)
    * @method
    * @memberof Popper.Utils
    * @argument {Element} element
    * @argument {String} side `top` or `left`
    * @returns {number} amount of scrolled pixels
    */
   function getScroll(element) {
     var side = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 'top';
 
     var upperSide = side === 'top' ? 'scrollTop' : 'scrollLeft';
     var nodeName = element.nodeName;
 
     if (nodeName === 'BODY' || nodeName === 'HTML') {
       var html = element.ownerDocument.documentElement;
       var scrollingElement = element.ownerDocument.scrollingElement || html;
       return scrollingElement[upperSide];
     }
 
     return element[upperSide];
   }
 
   /*
    * Sum or subtract the element scroll values (left and top) from a given rect object
    * @method
    * @memberof Popper.Utils
    * @param {Object} rect - Rect object you want to change
    * @param {HTMLElement} element - The element from the function reads the scroll values
    * @param {Boolean} subtract - set to true if you want to subtract the scroll values
    * @return {Object} rect - The modifier rect object
    */
   function includeScroll(rect, element) {
     var subtract = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;
 
     var scrollTop = getScroll(element, 'top');
     var scrollLeft = getScroll(element, 'left');
     var modifier = subtract ? -1 : 1;
     rect.top += scrollTop * modifier;
     rect.bottom += scrollTop * modifier;
     rect.left += scrollLeft * modifier;
     rect.right += scrollLeft * modifier;
     return rect;
   }
 
   /*
    * Helper to detect borders of a given element
    * @method
    * @memberof Popper.Utils
    * @param {CSSStyleDeclaration} styles
    * Result of `getStyleComputedProperty` on the given element
    * @param {String} axis - `x` or `y`
    * @return {number} borders - The borders size of the given axis
    */
 
   function getBordersSize(styles, axis) {
     var sideA = axis === 'x' ? 'Left' : 'Top';
     var sideB = sideA === 'Left' ? 'Right' : 'Bottom';
 
     return parseFloat(styles['border' + sideA + 'Width'], 10) + parseFloat(styles['border' + sideB + 'Width'], 10);
   }
 
   function getSize(axis, body, html, computedStyle) {
     return Math.max(body['offset' + axis], body['scroll' + axis], html['client' + axis], html['offset' + axis], html['scroll' + axis], isIE(10) ? parseInt(html['offset' + axis]) + parseInt(computedStyle['margin' + (axis === 'Height' ? 'Top' : 'Left')]) + parseInt(computedStyle['margin' + (axis === 'Height' ? 'Bottom' : 'Right')]) : 0);
   }
 
   function getWindowSizes(document) {
     var body = document.body;
     var html = document.documentElement;
     var computedStyle = isIE(10) && getComputedStyle(html);
 
     return {
       height: getSize('Height', body, html, computedStyle),
       width: getSize('Width', body, html, computedStyle)
     };
   }
 
   var classCallCheck = function (instance, Constructor) {
     if (!(instance instanceof Constructor)) {
       throw new TypeError("Cannot call a class as a function");
     }
   };
 
   var createClass = function () {
     function 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);
       }
     }
 
     return function (Constructor, protoProps, staticProps) {
       if (protoProps) defineProperties(Constructor.prototype, protoProps);
       if (staticProps) defineProperties(Constructor, staticProps);
       return Constructor;
     };
   }();
 
 
 
 
 
   var defineProperty = function (obj, key, value) {
     if (key in obj) {
       Object.defineProperty(obj, key, {
         value: value,
         enumerable: true,
         configurable: true,
         writable: true
       });
     } else {
       obj[key] = value;
     }
 
     return obj;
   };
 
   var _extends = Object.assign || function (target) {
     for (var i = 1; i < arguments.length; i++) {
       var source = arguments[i];
 
       for (var key in source) {
         if (Object.prototype.hasOwnProperty.call(source, key)) {
           target[key] = source[key];
         }
       }
     }
 
     return target;
   };
 
   /**
    * Given element offsets, generate an output similar to getBoundingClientRect
    * @method
    * @memberof Popper.Utils
    * @argument {Object} offsets
    * @returns {Object} ClientRect like output
    */
   function getClientRect(offsets) {
     return _extends({}, offsets, {
       right: offsets.left + offsets.width,
       bottom: offsets.top + offsets.height
     });
   }
 
   /**
    * Get bounding client rect of given element
    * @method
    * @memberof Popper.Utils
    * @param {HTMLElement} element
    * @return {Object} client rect
    */
   function getBoundingClientRect(element) {
     var rect = {};
 
     // IE10 10 FIX: Please, don't ask, the element isn't
     // considered in DOM in some circumstances...
     // This isn't reproducible in IE10 compatibility mode of IE11
     try {
       if (isIE(10)) {
         rect = element.getBoundingClientRect();
         var scrollTop = getScroll(element, 'top');
         var scrollLeft = getScroll(element, 'left');
         rect.top += scrollTop;
         rect.left += scrollLeft;
         rect.bottom += scrollTop;
         rect.right += scrollLeft;
       } else {
         rect = element.getBoundingClientRect();
       }
     } catch (e) {}
 
     var result = {
       left: rect.left,
       top: rect.top,
       width: rect.right - rect.left,
       height: rect.bottom - rect.top
     };
 
     // subtract scrollbar size from sizes
     var sizes = element.nodeName === 'HTML' ? getWindowSizes(element.ownerDocument) : {};
     var width = sizes.width || element.clientWidth || result.right - result.left;
     var height = sizes.height || element.clientHeight || result.bottom - result.top;
 
     var horizScrollbar = element.offsetWidth - width;
     var vertScrollbar = element.offsetHeight - height;
 
     // if an hypothetical scrollbar is detected, we must be sure it's not a `border`
     // we make this check conditional for performance reasons
     if (horizScrollbar || vertScrollbar) {
       var styles = getStyleComputedProperty(element);
       horizScrollbar -= getBordersSize(styles, 'x');
       vertScrollbar -= getBordersSize(styles, 'y');
 
       result.width -= horizScrollbar;
       result.height -= vertScrollbar;
     }
 
     return getClientRect(result);
   }
 
   function getOffsetRectRelativeToArbitraryNode(children, parent) {
     var fixedPosition = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;
 
     var isIE10 = isIE(10);
     var isHTML = parent.nodeName === 'HTML';
     var childrenRect = getBoundingClientRect(children);
     var parentRect = getBoundingClientRect(parent);
     var scrollParent = getScrollParent(children);
 
     var styles = getStyleComputedProperty(parent);
     var borderTopWidth = parseFloat(styles.borderTopWidth, 10);
     var borderLeftWidth = parseFloat(styles.borderLeftWidth, 10);
 
     // In cases where the parent is fixed, we must ignore negative scroll in offset calc
     if (fixedPosition && isHTML) {
       parentRect.top = Math.max(parentRect.top, 0);
       parentRect.left = Math.max(parentRect.left, 0);
     }
     var offsets = getClientRect({
       top: childrenRect.top - parentRect.top - borderTopWidth,
       left: childrenRect.left - parentRect.left - borderLeftWidth,
       width: childrenRect.width,
       height: childrenRect.height
     });
     offsets.marginTop = 0;
     offsets.marginLeft = 0;
 
     // Subtract margins of documentElement in case it's being used as parent
     // we do this only on HTML because it's the only element that behaves
     // differently when margins are applied to it. The margins are included in
     // the box of the documentElement, in the other cases not.
     if (!isIE10 && isHTML) {
       var marginTop = parseFloat(styles.marginTop, 10);
       var marginLeft = parseFloat(styles.marginLeft, 10);
 
       offsets.top -= borderTopWidth - marginTop;
       offsets.bottom -= borderTopWidth - marginTop;
       offsets.left -= borderLeftWidth - marginLeft;
       offsets.right -= borderLeftWidth - marginLeft;
 
       // Attach marginTop and marginLeft because in some circumstances we may need them
       offsets.marginTop = marginTop;
       offsets.marginLeft = marginLeft;
     }
 
     if (isIE10 && !fixedPosition ? parent.contains(scrollParent) : parent === scrollParent && scrollParent.nodeName !== 'BODY') {
       offsets = includeScroll(offsets, parent);
     }
 
     return offsets;
   }
 
   function getViewportOffsetRectRelativeToArtbitraryNode(element) {
     var excludeScroll = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;
 
     var html = element.ownerDocument.documentElement;
     var relativeOffset = getOffsetRectRelativeToArbitraryNode(element, html);
     var width = Math.max(html.clientWidth, window.innerWidth || 0);
     var height = Math.max(html.clientHeight, window.innerHeight || 0);
 
     var scrollTop = !excludeScroll ? getScroll(html) : 0;
     var scrollLeft = !excludeScroll ? getScroll(html, 'left') : 0;
 
     var offset = {
       top: scrollTop - relativeOffset.top + relativeOffset.marginTop,
       left: scrollLeft - relativeOffset.left + relativeOffset.marginLeft,
       width: width,
       height: height
     };
 
     return getClientRect(offset);
   }
 
   /**
    * Check if the given element is fixed or is inside a fixed parent
    * @method
    * @memberof Popper.Utils
    * @argument {Element} element
    * @argument {Element} customContainer
    * @returns {Boolean} answer to "isFixed?"
    */
   function isFixed(element) {
     var nodeName = element.nodeName;
     if (nodeName === 'BODY' || nodeName === 'HTML') {
       return false;
     }
     if (getStyleComputedProperty(element, 'position') === 'fixed') {
       return true;
     }
     var parentNode = getParentNode(element);
     if (!parentNode) {
       return false;
     }
     return isFixed(parentNode);
   }
 
   /**
    * Finds the first parent of an element that has a transformed property defined
    * @method
    * @memberof Popper.Utils
    * @argument {Element} element
    * @returns {Element} first transformed parent or documentElement
    */
 
   function getFixedPositionOffsetParent(element) {
     // This check is needed to avoid errors in case one of the elements isn't defined for any reason
     if (!element || !element.parentElement || isIE()) {
       return document.documentElement;
     }
     var el = element.parentElement;
     while (el && getStyleComputedProperty(el, 'transform') === 'none') {
       el = el.parentElement;
     }
     return el || document.documentElement;
   }
 
   /**
    * Computed the boundaries limits and return them
    * @method
    * @memberof Popper.Utils
    * @param {HTMLElement} popper
    * @param {HTMLElement} reference
    * @param {number} padding
    * @param {HTMLElement} boundariesElement - Element used to define the boundaries
    * @param {Boolean} fixedPosition - Is in fixed position mode
    * @returns {Object} Coordinates of the boundaries
    */
   function getBoundaries(popper, reference, padding, boundariesElement) {
     var fixedPosition = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : false;
 
     // NOTE: 1 DOM access here
 
     var boundaries = { top: 0, left: 0 };
     var offsetParent = fixedPosition ? getFixedPositionOffsetParent(popper) : findCommonOffsetParent(popper, reference);
 
     // Handle viewport case
     if (boundariesElement === 'viewport') {
       boundaries = getViewportOffsetRectRelativeToArtbitraryNode(offsetParent, fixedPosition);
     } else {
       // Handle other cases based on DOM element used as boundaries
       var boundariesNode = void 0;
       if (boundariesElement === 'scrollParent') {
         boundariesNode = getScrollParent(getParentNode(reference));
         if (boundariesNode.nodeName === 'BODY') {
           boundariesNode = popper.ownerDocument.documentElement;
         }
       } else if (boundariesElement === 'window') {
         boundariesNode = popper.ownerDocument.documentElement;
       } else {
         boundariesNode = boundariesElement;
       }
 
       var offsets = getOffsetRectRelativeToArbitraryNode(boundariesNode, offsetParent, fixedPosition);
 
       // In case of HTML, we need a different computation
       if (boundariesNode.nodeName === 'HTML' && !isFixed(offsetParent)) {
         var _getWindowSizes = getWindowSizes(popper.ownerDocument),
             height = _getWindowSizes.height,
             width = _getWindowSizes.width;
 
         boundaries.top += offsets.top - offsets.marginTop;
         boundaries.bottom = height + offsets.top;
         boundaries.left += offsets.left - offsets.marginLeft;
         boundaries.right = width + offsets.left;
       } else {
         // for all the other DOM elements, this one is good
         boundaries = offsets;
       }
     }
 
     // Add paddings
     padding = padding || 0;
     var isPaddingNumber = typeof padding === 'number';
     boundaries.left += isPaddingNumber ? padding : padding.left || 0;
     boundaries.top += isPaddingNumber ? padding : padding.top || 0;
     boundaries.right -= isPaddingNumber ? padding : padding.right || 0;
     boundaries.bottom -= isPaddingNumber ? padding : padding.bottom || 0;
 
     return boundaries;
   }
 
   function getArea(_ref) {
     var width = _ref.width,
         height = _ref.height;
 
     return width * height;
   }
 
   /**
    * Utility used to transform the `auto` placement to the placement with more
    * available space.
    * @method
    * @memberof Popper.Utils
    * @argument {Object} data - The data object generated by update method
    * @argument {Object} options - Modifiers configuration and options
    * @returns {Object} The data object, properly modified
    */
   function computeAutoPlacement(placement, refRect, popper, reference, boundariesElement) {
     var padding = arguments.length > 5 && arguments[5] !== undefined ? arguments[5] : 0;
 
     if (placement.indexOf('auto') === -1) {
       return placement;
     }
 
     var boundaries = getBoundaries(popper, reference, padding, boundariesElement);
 
     var rects = {
       top: {
         width: boundaries.width,
         height: refRect.top - boundaries.top
       },
       right: {
         width: boundaries.right - refRect.right,
         height: boundaries.height
       },
       bottom: {
         width: boundaries.width,
         height: boundaries.bottom - refRect.bottom
       },
       left: {
         width: refRect.left - boundaries.left,
         height: boundaries.height
       }
     };
 
     var sortedAreas = Object.keys(rects).map(function (key) {
       return _extends({
         key: key
       }, rects[key], {
         area: getArea(rects[key])
       });
     }).sort(function (a, b) {
       return b.area - a.area;
     });
 
     var filteredAreas = sortedAreas.filter(function (_ref2) {
       var width = _ref2.width,
           height = _ref2.height;
       return width >= popper.clientWidth && height >= popper.clientHeight;
     });
 
     var computedPlacement = filteredAreas.length > 0 ? filteredAreas[0].key : sortedAreas[0].key;
 
     var variation = placement.split('-')[1];
 
     return computedPlacement + (variation ? '-' + variation : '');
   }
 
   /**
    * Get offsets to the reference element
    * @method
    * @memberof Popper.Utils
    * @param {Object} state
    * @param {Element} popper - the popper element
    * @param {Element} reference - the reference element (the popper will be relative to this)
    * @param {Element} fixedPosition - is in fixed position mode
    * @returns {Object} An object containing the offsets which will be applied to the popper
    */
   function getReferenceOffsets(state, popper, reference) {
     var fixedPosition = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : null;
 
     var commonOffsetParent = fixedPosition ? getFixedPositionOffsetParent(popper) : findCommonOffsetParent(popper, reference);
     return getOffsetRectRelativeToArbitraryNode(reference, commonOffsetParent, fixedPosition);
   }
 
   /**
    * Get the outer sizes of the given element (offset size + margins)
    * @method
    * @memberof Popper.Utils
    * @argument {Element} element
    * @returns {Object} object containing width and height properties
    */
   function getOuterSizes(element) {
     var window = element.ownerDocument.defaultView;
     var styles = window.getComputedStyle(element);
     var x = parseFloat(styles.marginTop || 0) + parseFloat(styles.marginBottom || 0);
     var y = parseFloat(styles.marginLeft || 0) + parseFloat(styles.marginRight || 0);
     var result = {
       width: element.offsetWidth + y,
       height: element.offsetHeight + x
     };
     return result;
   }
 
   /**
    * Get the opposite placement of the given one
    * @method
    * @memberof Popper.Utils
    * @argument {String} placement
    * @returns {String} flipped placement
    */
   function getOppositePlacement(placement) {
     var hash = { left: 'right', right: 'left', bottom: 'top', top: 'bottom' };
     return placement.replace(/left|right|bottom|top/g, function (matched) {
       return hash[matched];
     });
   }
 
   /**
    * Get offsets to the popper
    * @method
    * @memberof Popper.Utils
    * @param {Object} position - CSS position the Popper will get applied
    * @param {HTMLElement} popper - the popper element
    * @param {Object} referenceOffsets - the reference offsets (the popper will be relative to this)
    * @param {String} placement - one of the valid placement options
    * @returns {Object} popperOffsets - An object containing the offsets which will be applied to the popper
    */
   function getPopperOffsets(popper, referenceOffsets, placement) {
     placement = placement.split('-')[0];
 
     // Get popper node sizes
     var popperRect = getOuterSizes(popper);
 
     // Add position, width and height to our offsets object
     var popperOffsets = {
       width: popperRect.width,
       height: popperRect.height
     };
 
     // depending by the popper placement we have to compute its offsets slightly differently
     var isHoriz = ['right', 'left'].indexOf(placement) !== -1;
     var mainSide = isHoriz ? 'top' : 'left';
     var secondarySide = isHoriz ? 'left' : 'top';
     var measurement = isHoriz ? 'height' : 'width';
     var secondaryMeasurement = !isHoriz ? 'height' : 'width';
 
     popperOffsets[mainSide] = referenceOffsets[mainSide] + referenceOffsets[measurement] / 2 - popperRect[measurement] / 2;
     if (placement === secondarySide) {
       popperOffsets[secondarySide] = referenceOffsets[secondarySide] - popperRect[secondaryMeasurement];
     } else {
       popperOffsets[secondarySide] = referenceOffsets[getOppositePlacement(secondarySide)];
     }
 
     return popperOffsets;
   }
 
   /**
    * Mimics the `find` method of Array
    * @method
    * @memberof Popper.Utils
    * @argument {Array} arr
    * @argument prop
    * @argument value
    * @returns index or -1
    */
   function find(arr, check) {
     // use native find if supported
     if (Array.prototype.find) {
       return arr.find(check);
     }
 
     // use `filter` to obtain the same behavior of `find`
     return arr.filter(check)[0];
   }
 
   /**
    * Return the index of the matching object
    * @method
    * @memberof Popper.Utils
    * @argument {Array} arr
    * @argument prop
    * @argument value
    * @returns index or -1
    */
   function findIndex(arr, prop, value) {
     // use native findIndex if supported
     if (Array.prototype.findIndex) {
       return arr.findIndex(function (cur) {
         return cur[prop] === value;
       });
     }
 
     // use `find` + `indexOf` if `findIndex` isn't supported
     var match = find(arr, function (obj) {
       return obj[prop] === value;
     });
     return arr.indexOf(match);
   }
 
   /**
    * Loop trough the list of modifiers and run them in order,
    * each of them will then edit the data object.
    * @method
    * @memberof Popper.Utils
    * @param {dataObject} data
    * @param {Array} modifiers
    * @param {String} ends - Optional modifier name used as stopper
    * @returns {dataObject}
    */
   function runModifiers(modifiers, data, ends) {
     var modifiersToRun = ends === undefined ? modifiers : modifiers.slice(0, findIndex(modifiers, 'name', ends));
 
     modifiersToRun.forEach(function (modifier) {
       if (modifier['function']) {
         // eslint-disable-line dot-notation
         console.warn('`modifier.function` is deprecated, use `modifier.fn`!');
       }
       var fn = modifier['function'] || modifier.fn; // eslint-disable-line dot-notation
       if (modifier.enabled && isFunction(fn)) {
         // Add properties to offsets to make them a complete clientRect object
         // we do this before each modifier to make sure the previous one doesn't
         // mess with these values
         data.offsets.popper = getClientRect(data.offsets.popper);
         data.offsets.reference = getClientRect(data.offsets.reference);
 
         data = fn(data, modifier);
       }
     });
 
     return data;
   }
 
   /**
    * Updates the position of the popper, computing the new offsets and applying
    * the new style.<br />
    * Prefer `scheduleUpdate` over `update` because of performance reasons.
    * @method
    * @memberof Popper
    */
   function update() {
     // if popper is destroyed, don't perform any further update
     if (this.state.isDestroyed) {
       return;
     }
 
     var data = {
       instance: this,
       styles: {},
       arrowStyles: {},
       attributes: {},
       flipped: false,
       offsets: {}
     };
 
     // compute reference element offsets
     data.offsets.reference = getReferenceOffsets(this.state, this.popper, this.reference, this.options.positionFixed);
 
     // compute auto placement, store placement inside the data object,
     // modifiers will be able to edit `placement` if needed
     // and refer to originalPlacement to know the original value
     data.placement = computeAutoPlacement(this.options.placement, data.offsets.reference, this.popper, this.reference, this.options.modifiers.flip.boundariesElement, this.options.modifiers.flip.padding);
 
     // store the computed placement inside `originalPlacement`
     data.originalPlacement = data.placement;
 
     data.positionFixed = this.options.positionFixed;
 
     // compute the popper offsets
     data.offsets.popper = getPopperOffsets(this.popper, data.offsets.reference, data.placement);
 
     data.offsets.popper.position = this.options.positionFixed ? 'fixed' : 'absolute';
 
     // run the modifiers
     data = runModifiers(this.modifiers, data);
 
     // the first `update` will call `onCreate` callback
     // the other ones will call `onUpdate` callback
     if (!this.state.isCreated) {
       this.state.isCreated = true;
       this.options.onCreate(data);
     } else {
       this.options.onUpdate(data);
     }
   }
 
   /**
    * Helper used to know if the given modifier is enabled.
    * @method
    * @memberof Popper.Utils
    * @returns {Boolean}
    */
   function isModifierEnabled(modifiers, modifierName) {
     return modifiers.some(function (_ref) {
       var name = _ref.name,
           enabled = _ref.enabled;
       return enabled && name === modifierName;
     });
   }
 
   /**
    * Get the prefixed supported property name
    * @method
    * @memberof Popper.Utils
    * @argument {String} property (camelCase)
    * @returns {String} prefixed property (camelCase or PascalCase, depending on the vendor prefix)
    */
   function getSupportedPropertyName(property) {
     var prefixes = [false, 'ms', 'Webkit', 'Moz', 'O'];
     var upperProp = property.charAt(0).toUpperCase() + property.slice(1);
 
     for (var i = 0; i < prefixes.length; i++) {
       var prefix = prefixes[i];
       var toCheck = prefix ? '' + prefix + upperProp : property;
       if (typeof document.body.style[toCheck] !== 'undefined') {
         return toCheck;
       }
     }
     return null;
   }
 
   /**
    * Destroys the popper.
    * @method
    * @memberof Popper
    */
   function destroy() {
     this.state.isDestroyed = true;
 
     // touch DOM only if `applyStyle` modifier is enabled
     if (isModifierEnabled(this.modifiers, 'applyStyle')) {
       this.popper.removeAttribute('x-placement');
       this.popper.style.position = '';
       this.popper.style.top = '';
       this.popper.style.left = '';
       this.popper.style.right = '';
       this.popper.style.bottom = '';
       this.popper.style.willChange = '';
       this.popper.style[getSupportedPropertyName('transform')] = '';
     }
 
     this.disableEventListeners();
 
     // remove the popper if user explicity asked for the deletion on destroy
     // do not use `remove` because IE11 doesn't support it
     if (this.options.removeOnDestroy) {
       this.popper.parentNode.removeChild(this.popper);
     }
     return this;
   }
 
   /**
    * Get the window associated with the element
    * @argument {Element} element
    * @returns {Window}
    */
   function getWindow(element) {
     var ownerDocument = element.ownerDocument;
     return ownerDocument ? ownerDocument.defaultView : window;
   }
 
   function attachToScrollParents(scrollParent, event, callback, scrollParents) {
     var isBody = scrollParent.nodeName === 'BODY';
     var target = isBody ? scrollParent.ownerDocument.defaultView : scrollParent;
     target.addEventListener(event, callback, { passive: true });
 
     if (!isBody) {
       attachToScrollParents(getScrollParent(target.parentNode), event, callback, scrollParents);
     }
     scrollParents.push(target);
   }
 
   /**
    * Setup needed event listeners used to update the popper position
    * @method
    * @memberof Popper.Utils
    * @private
    */
   function setupEventListeners(reference, options, state, updateBound) {
     // Resize event listener on window
     state.updateBound = updateBound;
     getWindow(reference).addEventListener('resize', state.updateBound, { passive: true });
 
     // Scroll event listener on scroll parents
     var scrollElement = getScrollParent(reference);
     attachToScrollParents(scrollElement, 'scroll', state.updateBound, state.scrollParents);
     state.scrollElement = scrollElement;
     state.eventsEnabled = true;
 
     return state;
   }
 
   /**
    * It will add resize/scroll events and start recalculating
    * position of the popper element when they are triggered.
    * @method
    * @memberof Popper
    */
   function enableEventListeners() {
     if (!this.state.eventsEnabled) {
       this.state = setupEventListeners(this.reference, this.options, this.state, this.scheduleUpdate);
     }
   }
 
   /**
    * Remove event listeners used to update the popper position
    * @method
    * @memberof Popper.Utils
    * @private
    */
   function removeEventListeners(reference, state) {
     // Remove resize event listener on window
     getWindow(reference).removeEventListener('resize', state.updateBound);
 
     // Remove scroll event listener on scroll parents
     state.scrollParents.forEach(function (target) {
       target.removeEventListener('scroll', state.updateBound);
     });
 
     // Reset state
     state.updateBound = null;
     state.scrollParents = [];
     state.scrollElement = null;
     state.eventsEnabled = false;
     return state;
   }
 
   /**
    * It will remove resize/scroll events and won't recalculate popper position
    * when they are triggered. It also won't trigger `onUpdate` callback anymore,
    * unless you call `update` method manually.
    * @method
    * @memberof Popper
    */
   function disableEventListeners() {
     if (this.state.eventsEnabled) {
       cancelAnimationFrame(this.scheduleUpdate);
       this.state = removeEventListeners(this.reference, this.state);
     }
   }
 
   /**
    * Tells if a given input is a number
    * @method
    * @memberof Popper.Utils
    * @param {*} input to check
    * @return {Boolean}
    */
   function isNumeric(n) {
     return n !== '' && !isNaN(parseFloat(n)) && isFinite(n);
   }
 
   /**
    * Set the style to the given popper
    * @method
    * @memberof Popper.Utils
    * @argument {Element} element - Element to apply the style to
    * @argument {Object} styles
    * Object with a list of properties and values which will be applied to the element
    */
   function setStyles(element, styles) {
     Object.keys(styles).forEach(function (prop) {
       var unit = '';
       // add unit if the value is numeric and is one of the following
       if (['width', 'height', 'top', 'right', 'bottom', 'left'].indexOf(prop) !== -1 && isNumeric(styles[prop])) {
         unit = 'px';
       }
       element.style[prop] = styles[prop] + unit;
     });
   }
 
   /**
    * Set the attributes to the given popper
    * @method
    * @memberof Popper.Utils
    * @argument {Element} element - Element to apply the attributes to
    * @argument {Object} styles
    * Object with a list of properties and values which will be applied to the element
    */
   function setAttributes(element, attributes) {
     Object.keys(attributes).forEach(function (prop) {
       var value = attributes[prop];
       if (value !== false) {
         element.setAttribute(prop, attributes[prop]);
       } else {
         element.removeAttribute(prop);
       }
     });
   }
 
   /**
    * @function
    * @memberof Modifiers
    * @argument {Object} data - The data object generated by `update` method
    * @argument {Object} data.styles - List of style properties - values to apply to popper element
    * @argument {Object} data.attributes - List of attribute properties - values to apply to popper element
    * @argument {Object} options - Modifiers configuration and options
    * @returns {Object} The same data object
    */
   function applyStyle(data) {
     // any property present in `data.styles` will be applied to the popper,
     // in this way we can make the 3rd party modifiers add custom styles to it
     // Be aware, modifiers could override the properties defined in the previous
     // lines of this modifier!
     setStyles(data.instance.popper, data.styles);
 
     // any property present in `data.attributes` will be applied to the popper,
     // they will be set as HTML attributes of the element
     setAttributes(data.instance.popper, data.attributes);
 
     // if arrowElement is defined and arrowStyles has some properties
     if (data.arrowElement && Object.keys(data.arrowStyles).length) {
       setStyles(data.arrowElement, data.arrowStyles);
     }
 
     return data;
   }
 
   /**
    * Set the x-placement attribute before everything else because it could be used
    * to add margins to the popper margins needs to be calculated to get the
    * correct popper offsets.
    * @method
    * @memberof Popper.modifiers
    * @param {HTMLElement} reference - The reference element used to position the popper
    * @param {HTMLElement} popper - The HTML element used as popper
    * @param {Object} options - Popper.js options
    */
   function applyStyleOnLoad(reference, popper, options, modifierOptions, state) {
     // compute reference element offsets
     var referenceOffsets = getReferenceOffsets(state, popper, reference, options.positionFixed);
 
     // compute auto placement, store placement inside the data object,
     // modifiers will be able to edit `placement` if needed
     // and refer to originalPlacement to know the original value
     var placement = computeAutoPlacement(options.placement, referenceOffsets, popper, reference, options.modifiers.flip.boundariesElement, options.modifiers.flip.padding);
 
     popper.setAttribute('x-placement', placement);
 
     // Apply `position` to popper before anything else because
     // without the position applied we can't guarantee correct computations
     setStyles(popper, { position: options.positionFixed ? 'fixed' : 'absolute' });
 
     return options;
   }
 
   /**
    * @function
    * @memberof Popper.Utils
    * @argument {Object} data - The data object generated by `update` method
    * @argument {Boolean} shouldRound - If the offsets should be rounded at all
    * @returns {Object} The popper's position offsets rounded
    *
    * The tale of pixel-perfect positioning. It's still not 100% perfect, but as
    * good as it can be within reason.
    * Discussion here: https://github.com/FezVrasta/popper.js/pull/715
    *
    * Low DPI screens cause a popper to be blurry if not using full pixels (Safari
    * as well on High DPI screens).
    *
    * Firefox prefers no rounding for positioning and does not have blurriness on
    * high DPI screens.
    *
    * Only horizontal placement and left/right values need to be considered.
    */
   function getRoundedOffsets(data, shouldRound) {
     var _data$offsets = data.offsets,
         popper = _data$offsets.popper,
         reference = _data$offsets.reference;
     var round = Math.round,
         floor = Math.floor;
 
     var noRound = function noRound(v) {
       return v;
     };
 
     var referenceWidth = round(reference.width);
     var popperWidth = round(popper.width);
 
     var isVertical = ['left', 'right'].indexOf(data.placement) !== -1;
     var isVariation = data.placement.indexOf('-') !== -1;
     var sameWidthParity = referenceWidth % 2 === popperWidth % 2;
     var bothOddWidth = referenceWidth % 2 === 1 && popperWidth % 2 === 1;
 
     var horizontalToInteger = !shouldRound ? noRound : isVertical || isVariation || sameWidthParity ? round : floor;
     var verticalToInteger = !shouldRound ? noRound : round;
 
     return {
       left: horizontalToInteger(bothOddWidth && !isVariation && shouldRound ? popper.left - 1 : popper.left),
       top: verticalToInteger(popper.top),
       bottom: verticalToInteger(popper.bottom),
       right: horizontalToInteger(popper.right)
     };
   }
 
   var isFirefox = isBrowser && /Firefox/i.test(navigator.userAgent);
 
   /**
    * @function
    * @memberof Modifiers
    * @argument {Object} data - The data object generated by `update` method
    * @argument {Object} options - Modifiers configuration and options
    * @returns {Object} The data object, properly modified
    */
   function computeStyle(data, options) {
     var x = options.x,
         y = options.y;
     var popper = data.offsets.popper;
 
     // Remove this legacy support in Popper.js v2
 
     var legacyGpuAccelerationOption = find(data.instance.modifiers, function (modifier) {
       return modifier.name === 'applyStyle';
     }).gpuAcceleration;
     if (legacyGpuAccelerationOption !== undefined) {
       console.warn('WARNING: `gpuAcceleration` option moved to `computeStyle` modifier and will not be supported in future versions of Popper.js!');
     }
     var gpuAcceleration = legacyGpuAccelerationOption !== undefined ? legacyGpuAccelerationOption : options.gpuAcceleration;
 
     var offsetParent = getOffsetParent(data.instance.popper);
     var offsetParentRect = getBoundingClientRect(offsetParent);
 
     // Styles
     var styles = {
       position: popper.position
     };
 
     var offsets = getRoundedOffsets(data, window.devicePixelRatio < 2 || !isFirefox);
 
     var sideA = x === 'bottom' ? 'top' : 'bottom';
     var sideB = y === 'right' ? 'left' : 'right';
 
     // if gpuAcceleration is set to `true` and transform is supported,
     //  we use `translate3d` to apply the position to the popper we
     // automatically use the supported prefixed version if needed
     var prefixedProperty = getSupportedPropertyName('transform');
 
     // now, let's make a step back and look at this code closely (wtf?)
     // If the content of the popper grows once it's been positioned, it
     // may happen that the popper gets misplaced because of the new content
     // overflowing its reference element
     // To avoid this problem, we provide two options (x and y), which allow
     // the consumer to define the offset origin.
     // If we position a popper on top of a reference element, we can set
     // `x` to `top` to make the popper grow towards its top instead of
     // its bottom.
     var left = void 0,
         top = void 0;
     if (sideA === 'bottom') {
       // when offsetParent is <html> the positioning is relative to the bottom of the screen (excluding the scrollbar)
       // and not the bottom of the html element
       if (offsetParent.nodeName === 'HTML') {
         top = -offsetParent.clientHeight + offsets.bottom;
       } else {
         top = -offsetParentRect.height + offsets.bottom;
       }
     } else {
       top = offsets.top;
     }
     if (sideB === 'right') {
       if (offsetParent.nodeName === 'HTML') {
         left = -offsetParent.clientWidth + offsets.right;
       } else {
         left = -offsetParentRect.width + offsets.right;
       }
     } else {
       left = offsets.left;
     }
     if (gpuAcceleration && prefixedProperty) {
       styles[prefixedProperty] = 'translate3d(' + left + 'px, ' + top + 'px, 0)';
       styles[sideA] = 0;
       styles[sideB] = 0;
       styles.willChange = 'transform';
     } else {
       // othwerise, we use the standard `top`, `left`, `bottom` and `right` properties
       var invertTop = sideA === 'bottom' ? -1 : 1;
       var invertLeft = sideB === 'right' ? -1 : 1;
       styles[sideA] = top * invertTop;
       styles[sideB] = left * invertLeft;
       styles.willChange = sideA + ', ' + sideB;
     }
 
     // Attributes
     var attributes = {
       'x-placement': data.placement
     };
 
     // Update `data` attributes, styles and arrowStyles
     data.attributes = _extends({}, attributes, data.attributes);
     data.styles = _extends({}, styles, data.styles);
     data.arrowStyles = _extends({}, data.offsets.arrow, data.arrowStyles);
 
     return data;
   }
 
   /**
    * Helper used to know if the given modifier depends from another one.<br />
    * It checks if the needed modifier is listed and enabled.
    * @method
    * @memberof Popper.Utils
    * @param {Array} modifiers - list of modifiers
    * @param {String} requestingName - name of requesting modifier
    * @param {String} requestedName - name of requested modifier
    * @returns {Boolean}
    */
   function isModifierRequired(modifiers, requestingName, requestedName) {
     var requesting = find(modifiers, function (_ref) {
       var name = _ref.name;
       return name === requestingName;
     });
 
     var isRequired = !!requesting && modifiers.some(function (modifier) {
       return modifier.name === requestedName && modifier.enabled && modifier.order < requesting.order;
     });
 
     if (!isRequired) {
       var _requesting = '`' + requestingName + '`';
       var requested = '`' + requestedName + '`';
       console.warn(requested + ' modifier is required by ' + _requesting + ' modifier in order to work, be sure to include it before ' + _requesting + '!');
     }
     return isRequired;
   }
 
   /**
    * @function
    * @memberof Modifiers
    * @argument {Object} data - The data object generated by update method
    * @argument {Object} options - Modifiers configuration and options
    * @returns {Object} The data object, properly modified
    */
   function arrow(data, options) {
     var _data$offsets$arrow;
 
     // arrow depends on keepTogether in order to work
     if (!isModifierRequired(data.instance.modifiers, 'arrow', 'keepTogether')) {
       return data;
     }
 
     var arrowElement = options.element;
 
     // if arrowElement is a string, suppose it's a CSS selector
     if (typeof arrowElement === 'string') {
       arrowElement = data.instance.popper.querySelector(arrowElement);
 
       // if arrowElement is not found, don't run the modifier
       if (!arrowElement) {
         return data;
       }
     } else {
       // if the arrowElement isn't a query selector we must check that the
       // provided DOM node is child of its popper node
       if (!data.instance.popper.contains(arrowElement)) {
         console.warn('WARNING: `arrow.element` must be child of its popper element!');
         return data;
       }
     }
 
     var placement = data.placement.split('-')[0];
     var _data$offsets = data.offsets,
         popper = _data$offsets.popper,
         reference = _data$offsets.reference;
 
     var isVertical = ['left', 'right'].indexOf(placement) !== -1;
 
     var len = isVertical ? 'height' : 'width';
     var sideCapitalized = isVertical ? 'Top' : 'Left';
     var side = sideCapitalized.toLowerCase();
     var altSide = isVertical ? 'left' : 'top';
     var opSide = isVertical ? 'bottom' : 'right';
     var arrowElementSize = getOuterSizes(arrowElement)[len];
 
     //
     // extends keepTogether behavior making sure the popper and its
     // reference have enough pixels in conjunction
     //
 
     // top/left side
     if (reference[opSide] - arrowElementSize < popper[side]) {
       data.offsets.popper[side] -= popper[side] - (reference[opSide] - arrowElementSize);
     }
     // bottom/right side
     if (reference[side] + arrowElementSize > popper[opSide]) {
       data.offsets.popper[side] += reference[side] + arrowElementSize - popper[opSide];
     }
     data.offsets.popper = getClientRect(data.offsets.popper);
 
     // compute center of the popper
     var center = reference[side] + reference[len] / 2 - arrowElementSize / 2;
 
     // Compute the sideValue using the updated popper offsets
     // take popper margin in account because we don't have this info available
     var css = getStyleComputedProperty(data.instance.popper);
     var popperMarginSide = parseFloat(css['margin' + sideCapitalized], 10);
     var popperBorderSide = parseFloat(css['border' + sideCapitalized + 'Width'], 10);
     var sideValue = center - data.offsets.popper[side] - popperMarginSide - popperBorderSide;
 
     // prevent arrowElement from being placed not contiguously to its popper
     sideValue = Math.max(Math.min(popper[len] - arrowElementSize, sideValue), 0);
 
     data.arrowElement = arrowElement;
     data.offsets.arrow = (_data$offsets$arrow = {}, defineProperty(_data$offsets$arrow, side, Math.round(sideValue)), defineProperty(_data$offsets$arrow, altSide, ''), _data$offsets$arrow);
 
     return data;
   }
 
   /**
    * Get the opposite placement variation of the given one
    * @method
    * @memberof Popper.Utils
    * @argument {String} placement variation
    * @returns {String} flipped placement variation
    */
   function getOppositeVariation(variation) {
     if (variation === 'end') {
       return 'start';
     } else if (variation === 'start') {
       return 'end';
     }
     return variation;
   }
 
   /**
    * List of accepted placements to use as values of the `placement` option.<br />
    * Valid placements are:
    * - `auto`
    * - `top`
    * - `right`
    * - `bottom`
    * - `left`
    *
    * Each placement can have a variation from this list:
    * - `-start`
    * - `-end`
    *
    * Variations are interpreted easily if you think of them as the left to right
    * written languages. Horizontally (`top` and `bottom`), `start` is left and `end`
    * is right.<br />
    * Vertically (`left` and `right`), `start` is top and `end` is bottom.
    *
    * Some valid examples are:
    * - `top-end` (on top of reference, right aligned)
    * - `right-start` (on right of reference, top aligned)
    * - `bottom` (on bottom, centered)
    * - `auto-end` (on the side with more space available, alignment depends by placement)
    *
    * @static
    * @type {Array}
    * @enum {String}
    * @readonly
    * @method placements
    * @memberof Popper
    */
   var placements = ['auto-start', 'auto', 'auto-end', 'top-start', 'top', 'top-end', 'right-start', 'right', 'right-end', 'bottom-end', 'bottom', 'bottom-start', 'left-end', 'left', 'left-start'];
 
   // Get rid of `auto` `auto-start` and `auto-end`
   var validPlacements = placements.slice(3);
 
   /**
    * Given an initial placement, returns all the subsequent placements
    * clockwise (or counter-clockwise).
    *
    * @method
    * @memberof Popper.Utils
    * @argument {String} placement - A valid placement (it accepts variations)
    * @argument {Boolean} counter - Set to true to walk the placements counterclockwise
    * @returns {Array} placements including their variations
    */
   function clockwise(placement) {
     var counter = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;
 
     var index = validPlacements.indexOf(placement);
     var arr = validPlacements.slice(index + 1).concat(validPlacements.slice(0, index));
     return counter ? arr.reverse() : arr;
   }
 
   var BEHAVIORS = {
     FLIP: 'flip',
     CLOCKWISE: 'clockwise',
     COUNTERCLOCKWISE: 'counterclockwise'
   };
 
   /**
    * @function
    * @memberof Modifiers
    * @argument {Object} data - The data object generated by update method
    * @argument {Object} options - Modifiers configuration and options
    * @returns {Object} The data object, properly modified
    */
   function flip(data, options) {
     // if `inner` modifier is enabled, we can't use the `flip` modifier
     if (isModifierEnabled(data.instance.modifiers, 'inner')) {
       return data;
     }
 
     if (data.flipped && data.placement === data.originalPlacement) {
       // seems like flip is trying to loop, probably there's not enough space on any of the flippable sides
       return data;
     }
 
     var boundaries = getBoundaries(data.instance.popper, data.instance.reference, options.padding, options.boundariesElement, data.positionFixed);
 
     var placement = data.placement.split('-')[0];
     var placementOpposite = getOppositePlacement(placement);
     var variation = data.placement.split('-')[1] || '';
 
     var flipOrder = [];
 
     switch (options.behavior) {
       case BEHAVIORS.FLIP:
         flipOrder = [placement, placementOpposite];
         break;
       case BEHAVIORS.CLOCKWISE:
         flipOrder = clockwise(placement);
         break;
       case BEHAVIORS.COUNTERCLOCKWISE:
         flipOrder = clockwise(placement, true);
         break;
       default:
         flipOrder = options.behavior;
     }
 
     flipOrder.forEach(function (step, index) {
       if (placement !== step || flipOrder.length === index + 1) {
         return data;
       }
 
       placement = data.placement.split('-')[0];
       placementOpposite = getOppositePlacement(placement);
 
       var popperOffsets = data.offsets.popper;
       var refOffsets = data.offsets.reference;
 
       // using floor because the reference offsets may contain decimals we are not going to consider here
       var floor = Math.floor;
       var overlapsRef = placement === 'left' && floor(popperOffsets.right) > floor(refOffsets.left) || placement === 'right' && floor(popperOffsets.left) < floor(refOffsets.right) || placement === 'top' && floor(popperOffsets.bottom) > floor(refOffsets.top) || placement === 'bottom' && floor(popperOffsets.top) < floor(refOffsets.bottom);
 
       var overflowsLeft = floor(popperOffsets.left) < floor(boundaries.left);
       var overflowsRight = floor(popperOffsets.right) > floor(boundaries.right);
       var overflowsTop = floor(popperOffsets.top) < floor(boundaries.top);
       var overflowsBottom = floor(popperOffsets.bottom) > floor(boundaries.bottom);
 
       var overflowsBoundaries = placement === 'left' && overflowsLeft || placement === 'right' && overflowsRight || placement === 'top' && overflowsTop || placement === 'bottom' && overflowsBottom;
 
       // flip the variation if required
       var isVertical = ['top', 'bottom'].indexOf(placement) !== -1;
       var flippedVariation = !!options.flipVariations && (isVertical && variation === 'start' && overflowsLeft || isVertical && variation === 'end' && overflowsRight || !isVertical && variation === 'start' && overflowsTop || !isVertical && variation === 'end' && overflowsBottom);
 
       if (overlapsRef || overflowsBoundaries || flippedVariation) {
         // this boolean to detect any flip loop
         data.flipped = true;
 
         if (overlapsRef || overflowsBoundaries) {
           placement = flipOrder[index + 1];
         }
 
         if (flippedVariation) {
           variation = getOppositeVariation(variation);
         }
 
         data.placement = placement + (variation ? '-' + variation : '');
 
         // this object contains `position`, we want to preserve it along with
         // any additional property we may add in the future
         data.offsets.popper = _extends({}, data.offsets.popper, getPopperOffsets(data.instance.popper, data.offsets.reference, data.placement));
 
         data = runModifiers(data.instance.modifiers, data, 'flip');
       }
     });
     return data;
   }
 
   /**
    * @function
    * @memberof Modifiers
    * @argument {Object} data - The data object generated by update method
    * @argument {Object} options - Modifiers configuration and options
    * @returns {Object} The data object, properly modified
    */
   function keepTogether(data) {
     var _data$offsets = data.offsets,
         popper = _data$offsets.popper,
         reference = _data$offsets.reference;
 
     var placement = data.placement.split('-')[0];
     var floor = Math.floor;
     var isVertical = ['top', 'bottom'].indexOf(placement) !== -1;
     var side = isVertical ? 'right' : 'bottom';
     var opSide = isVertical ? 'left' : 'top';
     var measurement = isVertical ? 'width' : 'height';
 
     if (popper[side] < floor(reference[opSide])) {
       data.offsets.popper[opSide] = floor(reference[opSide]) - popper[measurement];
     }
     if (popper[opSide] > floor(reference[side])) {
       data.offsets.popper[opSide] = floor(reference[side]);
     }
 
     return data;
   }
 
   /**
    * Converts a string containing value + unit into a px value number
    * @function
    * @memberof {modifiers~offset}
    * @private
    * @argument {String} str - Value + unit string
    * @argument {String} measurement - `height` or `width`
    * @argument {Object} popperOffsets
    * @argument {Object} referenceOffsets
    * @returns {Number|String}
    * Value in pixels, or original string if no values were extracted
    */
   function toValue(str, measurement, popperOffsets, referenceOffsets) {
     // separate value from unit
     var split = str.match(/((?:\-|\+)?\d*\.?\d*)(.*)/);
     var value = +split[1];
     var unit = split[2];
 
     // If it's not a number it's an operator, I guess
     if (!value) {
       return str;
     }
 
     if (unit.indexOf('%') === 0) {
       var element = void 0;
       switch (unit) {
         case '%p':
           element = popperOffsets;
           break;
         case '%':
         case '%r':
         default:
           element = referenceOffsets;
       }
 
       var rect = getClientRect(element);
       return rect[measurement] / 100 * value;
     } else if (unit === 'vh' || unit === 'vw') {
       // if is a vh or vw, we calculate the size based on the viewport
       var size = void 0;
       if (unit === 'vh') {
         size = Math.max(document.documentElement.clientHeight, window.innerHeight || 0);
       } else {
         size = Math.max(document.documentElement.clientWidth, window.innerWidth || 0);
       }
       return size / 100 * value;
     } else {
       // if is an explicit pixel unit, we get rid of the unit and keep the value
       // if is an implicit unit, it's px, and we return just the value
       return value;
     }
   }
 
   /**
    * Parse an `offset` string to extrapolate `x` and `y` numeric offsets.
    * @function
    * @memberof {modifiers~offset}
    * @private
    * @argument {String} offset
    * @argument {Object} popperOffsets
    * @argument {Object} referenceOffsets
    * @argument {String} basePlacement
    * @returns {Array} a two cells array with x and y offsets in numbers
    */
   function parseOffset(offset, popperOffsets, referenceOffsets, basePlacement) {
     var offsets = [0, 0];
 
     // Use height if placement is left or right and index is 0 otherwise use width
     // in this way the first offset will use an axis and the second one
     // will use the other one
     var useHeight = ['right', 'left'].indexOf(basePlacement) !== -1;
 
     // Split the offset string to obtain a list of values and operands
     // The regex addresses values with the plus or minus sign in front (+10, -20, etc)
     var fragments = offset.split(/(\+|\-)/).map(function (frag) {
       return frag.trim();
     });
 
     // Detect if the offset string contains a pair of values or a single one
     // they could be separated by comma or space
     var divider = fragments.indexOf(find(fragments, function (frag) {
       return frag.search(/,|\s/) !== -1;
     }));
 
     if (fragments[divider] && fragments[divider].indexOf(',') === -1) {
       console.warn('Offsets separated by white space(s) are deprecated, use a comma (,) instead.');
     }
 
     // If divider is found, we divide the list of values and operands to divide
     // them by ofset X and Y.
     var splitRegex = /\s*,\s*|\s+/;
     var ops = divider !== -1 ? [fragments.slice(0, divider).concat([fragments[divider].split(splitRegex)[0]]), [fragments[divider].split(splitRegex)[1]].concat(fragments.slice(divider + 1))] : [fragments];
 
     // Convert the values with units to absolute pixels to allow our computations
     ops = ops.map(function (op, index) {
       // Most of the units rely on the orientation of the popper
       var measurement = (index === 1 ? !useHeight : useHeight) ? 'height' : 'width';
       var mergeWithPrevious = false;
       return op
       // This aggregates any `+` or `-` sign that aren't considered operators
       // e.g.: 10 + +5 => [10, +, +5]
       .reduce(function (a, b) {
         if (a[a.length - 1] === '' && ['+', '-'].indexOf(b) !== -1) {
           a[a.length - 1] = b;
           mergeWithPrevious = true;
           return a;
         } else if (mergeWithPrevious) {
           a[a.length - 1] += b;
           mergeWithPrevious = false;
           return a;
         } else {
           return a.concat(b);
         }
       }, [])
       // Here we convert the string values into number values (in px)
       .map(function (str) {
         return toValue(str, measurement, popperOffsets, referenceOffsets);
       });
     });
 
     // Loop trough the offsets arrays and execute the operations
     ops.forEach(function (op, index) {
       op.forEach(function (frag, index2) {
         if (isNumeric(frag)) {
           offsets[index] += frag * (op[index2 - 1] === '-' ? -1 : 1);
         }
       });
     });
     return offsets;
   }
 
   /**
    * @function
    * @memberof Modifiers
    * @argument {Object} data - The data object generated by update method
    * @argument {Object} options - Modifiers configuration and options
    * @argument {Number|String} options.offset=0
    * The offset value as described in the modifier description
    * @returns {Object} The data object, properly modified
    */
   function offset(data, _ref) {
     var offset = _ref.offset;
     var placement = data.placement,
         _data$offsets = data.offsets,
         popper = _data$offsets.popper,
         reference = _data$offsets.reference;
 
     var basePlacement = placement.split('-')[0];
 
     var offsets = void 0;
     if (isNumeric(+offset)) {
       offsets = [+offset, 0];
     } else {
       offsets = parseOffset(offset, popper, reference, basePlacement);
     }
 
     if (basePlacement === 'left') {
       popper.top += offsets[0];
       popper.left -= offsets[1];
     } else if (basePlacement === 'right') {
       popper.top += offsets[0];
       popper.left += offsets[1];
     } else if (basePlacement === 'top') {
       popper.left += offsets[0];
       popper.top -= offsets[1];
     } else if (basePlacement === 'bottom') {
       popper.left += offsets[0];
       popper.top += offsets[1];
     }
 
     data.popper = popper;
     return data;
   }
 
   /**
    * @function
    * @memberof Modifiers
    * @argument {Object} data - The data object generated by `update` method
    * @argument {Object} options - Modifiers configuration and options
    * @returns {Object} The data object, properly modified
    */
   function preventOverflow(data, options) {
     var boundariesElement = options.boundariesElement || getOffsetParent(data.instance.popper);
 
     // If offsetParent is the reference element, we really want to
     // go one step up and use the next offsetParent as reference to
     // avoid to make this modifier completely useless and look like broken
     if (data.instance.reference === boundariesElement) {
       boundariesElement = getOffsetParent(boundariesElement);
     }
 
     // NOTE: DOM access here
     // resets the popper's position so that the document size can be calculated excluding
     // the size of the popper element itself
     var transformProp = getSupportedPropertyName('transform');
     var popperStyles = data.instance.popper.style; // assignment to help minification
     var top = popperStyles.top,
         left = popperStyles.left,
         transform = popperStyles[transformProp];
 
     popperStyles.top = '';
     popperStyles.left = '';
     popperStyles[transformProp] = '';
 
     var boundaries = getBoundaries(data.instance.popper, data.instance.reference, options.padding, boundariesElement, data.positionFixed);
 
     // NOTE: DOM access here
     // restores the original style properties after the offsets have been computed
     popperStyles.top = top;
     popperStyles.left = left;
     popperStyles[transformProp] = transform;
 
     options.boundaries = boundaries;
 
     var order = options.priority;
     var popper = data.offsets.popper;
 
     var check = {
       primary: function primary(placement) {
         var value = popper[placement];
         if (popper[placement] < boundaries[placement] && !options.escapeWithReference) {
           value = Math.max(popper[placement], boundaries[placement]);
         }
         return defineProperty({}, placement, value);
       },
       secondary: function secondary(placement) {
         var mainSide = placement === 'right' ? 'left' : 'top';
         var value = popper[mainSide];
         if (popper[placement] > boundaries[placement] && !options.escapeWithReference) {
           value = Math.min(popper[mainSide], boundaries[placement] - (placement === 'right' ? popper.width : popper.height));
         }
         return defineProperty({}, mainSide, value);
       }
     };
 
     order.forEach(function (placement) {
       var side = ['left', 'top'].indexOf(placement) !== -1 ? 'primary' : 'secondary';
       popper = _extends({}, popper, check[side](placement));
     });
 
     data.offsets.popper = popper;
 
     return data;
   }
 
   /**
    * @function
    * @memberof Modifiers
    * @argument {Object} data - The data object generated by `update` method
    * @argument {Object} options - Modifiers configuration and options
    * @returns {Object} The data object, properly modified
    */
   function shift(data) {
     var placement = data.placement;
     var basePlacement = placement.split('-')[0];
     var shiftvariation = placement.split('-')[1];
 
     // if shift shiftvariation is specified, run the modifier
     if (shiftvariation) {
       var _data$offsets = data.offsets,
           reference = _data$offsets.reference,
           popper = _data$offsets.popper;
 
       var isVertical = ['bottom', 'top'].indexOf(basePlacement) !== -1;
       var side = isVertical ? 'left' : 'top';
       var measurement = isVertical ? 'width' : 'height';
 
       var shiftOffsets = {
         start: defineProperty({}, side, reference[side]),
         end: defineProperty({}, side, reference[side] + reference[measurement] - popper[measurement])
       };
 
       data.offsets.popper = _extends({}, popper, shiftOffsets[shiftvariation]);
     }
 
     return data;
   }
 
   /**
    * @function
    * @memberof Modifiers
    * @argument {Object} data - The data object generated by update method
    * @argument {Object} options - Modifiers configuration and options
    * @returns {Object} The data object, properly modified
    */
   function hide(data) {
     if (!isModifierRequired(data.instance.modifiers, 'hide', 'preventOverflow')) {
       return data;
     }
 
     var refRect = data.offsets.reference;
     var bound = find(data.instance.modifiers, function (modifier) {
       return modifier.name === 'preventOverflow';
     }).boundaries;
 
     if (refRect.bottom < bound.top || refRect.left > bound.right || refRect.top > bound.bottom || refRect.right < bound.left) {
       // Avoid unnecessary DOM access if visibility hasn't changed
       if (data.hide === true) {
         return data;
       }
 
       data.hide = true;
       data.attributes['x-out-of-boundaries'] = '';
     } else {
       // Avoid unnecessary DOM access if visibility hasn't changed
       if (data.hide === false) {
         return data;
       }
 
       data.hide = false;
       data.attributes['x-out-of-boundaries'] = false;
     }
 
     return data;
   }
 
   /**
    * @function
    * @memberof Modifiers
    * @argument {Object} data - The data object generated by `update` method
    * @argument {Object} options - Modifiers configuration and options
    * @returns {Object} The data object, properly modified
    */
   function inner(data) {
     var placement = data.placement;
     var basePlacement = placement.split('-')[0];
     var _data$offsets = data.offsets,
         popper = _data$offsets.popper,
         reference = _data$offsets.reference;
 
     var isHoriz = ['left', 'right'].indexOf(basePlacement) !== -1;
 
     var subtractLength = ['top', 'left'].indexOf(basePlacement) === -1;
 
     popper[isHoriz ? 'left' : 'top'] = reference[basePlacement] - (subtractLength ? popper[isHoriz ? 'width' : 'height'] : 0);
 
     data.placement = getOppositePlacement(placement);
     data.offsets.popper = getClientRect(popper);
 
     return data;
   }
 
   /**
    * Modifier function, each modifier can have a function of this type assigned
    * to its `fn` property.<br />
    * These functions will be called on each update, this means that you must
    * make sure they are performant enough to avoid performance bottlenecks.
    *
    * @function ModifierFn
    * @argument {dataObject} data - The data object generated by `update` method
    * @argument {Object} options - Modifiers configuration and options
    * @returns {dataObject} The data object, properly modified
    */
 
   /**
    * Modifiers are plugins used to alter the behavior of your poppers.<br />
    * Popper.js uses a set of 9 modifiers to provide all the basic functionalities
    * needed by the library.
    *
    * Usually you don't want to override the `order`, `fn` and `onLoad` props.
    * All the other properties are configurations that could be tweaked.
    * @namespace modifiers
    */
   var modifiers = {
     /**
      * Modifier used to shift the popper on the start or end of its reference
      * element.<br />
      * It will read the variation of the `placement` property.<br />
      * It can be one either `-end` or `-start`.
      * @memberof modifiers
      * @inner
      */
     shift: {
       /** @prop {number} order=100 - Index used to define the order of execution */
       order: 100,
       /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
       enabled: true,
       /** @prop {ModifierFn} */
       fn: shift
     },
 
     /**
      * The `offset` modifier can shift your popper on both its axis.
      *
      * It accepts the following units:
      * - `px` or unit-less, interpreted as pixels
      * - `%` or `%r`, percentage relative to the length of the reference element
      * - `%p`, percentage relative to the length of the popper element
      * - `vw`, CSS viewport width unit
      * - `vh`, CSS viewport height unit
      *
      * For length is intended the main axis relative to the placement of the popper.<br />
      * This means that if the placement is `top` or `bottom`, the length will be the
      * `width`. In case of `left` or `right`, it will be the `height`.
      *
      * You can provide a single value (as `Number` or `String`), or a pair of values
      * as `String` divided by a comma or one (or more) white spaces.<br />
      * The latter is a deprecated method because it leads to confusion and will be
      * removed in v2.<br />
      * Additionally, it accepts additions and subtractions between different units.
      * Note that multiplications and divisions aren't supported.
      *
      * Valid examples are:
      * ```
      * 10
      * '10%'
      * '10, 10'
      * '10%, 10'
      * '10 + 10%'
      * '10 - 5vh + 3%'
      * '-10px + 5vh, 5px - 6%'
      * ```
      * > **NB**: If you desire to apply offsets to your poppers in a way that may make them overlap
      * > with their reference element, unfortunately, you will have to disable the `flip` modifier.
      * > You can read more on this at this [issue](https://github.com/FezVrasta/popper.js/issues/373).
      *
      * @memberof modifiers
      * @inner
      */
     offset: {
       /** @prop {number} order=200 - Index used to define the order of execution */
       order: 200,
       /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
       enabled: true,
       /** @prop {ModifierFn} */
       fn: offset,
       /** @prop {Number|String} offset=0
        * The offset value as described in the modifier description
        */
       offset: 0
     },
 
     /**
      * Modifier used to prevent the popper from being positioned outside the boundary.
      *
      * A scenario exists where the reference itself is not within the boundaries.<br />
      * We can say it has "escaped the boundaries" — or just "escaped".<br />
      * In this case we need to decide whether the popper should either:
      *
      * - detach from the reference and remain "trapped" in the boundaries, or
      * - if it should ignore the boundary and "escape with its reference"
      *
      * When `escapeWithReference` is set to`true` and reference is completely
      * outside its boundaries, the popper will overflow (or completely leave)
      * the boundaries in order to remain attached to the edge of the reference.
      *
      * @memberof modifiers
      * @inner
      */
     preventOverflow: {
       /** @prop {number} order=300 - Index used to define the order of execution */
       order: 300,
       /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
       enabled: true,
       /** @prop {ModifierFn} */
       fn: preventOverflow,
       /**
        * @prop {Array} [priority=['left','right','top','bottom']]
        * Popper will try to prevent overflow following these priorities by default,
        * then, it could overflow on the left and on top of the `boundariesElement`
        */
       priority: ['left', 'right', 'top', 'bottom'],
       /**
        * @prop {number} padding=5
        * Amount of pixel used to define a minimum distance between the boundaries
        * and the popper. This makes sure the popper always has a little padding
        * between the edges of its container
        */
       padding: 5,
       /**
        * @prop {String|HTMLElement} boundariesElement='scrollParent'
        * Boundaries used by the modifier. Can be `scrollParent`, `window`,
        * `viewport` or any DOM element.
        */
       boundariesElement: 'scrollParent'
     },
 
     /**
      * Modifier used to make sure the reference and its popper stay near each other
      * without leaving any gap between the two. Especially useful when the arrow is
      * enabled and you want to ensure that it points to its reference element.
      * It cares only about the first axis. You can still have poppers with margin
      * between the popper and its reference element.
      * @memberof modifiers
      * @inner
      */
     keepTogether: {
       /** @prop {number} order=400 - Index used to define the order of execution */
       order: 400,
       /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
       enabled: true,
       /** @prop {ModifierFn} */
       fn: keepTogether
     },
 
     /**
      * This modifier is used to move the `arrowElement` of the popper to make
      * sure it is positioned between the reference element and its popper element.
      * It will read the outer size of the `arrowElement` node to detect how many
      * pixels of conjunction are needed.
      *
      * It has no effect if no `arrowElement` is provided.
      * @memberof modifiers
      * @inner
      */
     arrow: {
       /** @prop {number} order=500 - Index used to define the order of execution */
       order: 500,
       /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
       enabled: true,
       /** @prop {ModifierFn} */
       fn: arrow,
       /** @prop {String|HTMLElement} element='[x-arrow]' - Selector or node used as arrow */
       element: '[x-arrow]'
     },
 
     /**
      * Modifier used to flip the popper's placement when it starts to overlap its
      * reference element.
      *
      * Requires the `preventOverflow` modifier before it in order to work.
      *
      * **NOTE:** this modifier will interrupt the current update cycle and will
      * restart it if it detects the need to flip the placement.
      * @memberof modifiers
      * @inner
      */
     flip: {
       /** @prop {number} order=600 - Index used to define the order of execution */
       order: 600,
       /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
       enabled: true,
       /** @prop {ModifierFn} */
       fn: flip,
       /**
        * @prop {String|Array} behavior='flip'
        * The behavior used to change the popper's placement. It can be one of
        * `flip`, `clockwise`, `counterclockwise` or an array with a list of valid
        * placements (with optional variations)
        */
       behavior: 'flip',
       /**
        * @prop {number} padding=5
        * The popper will flip if it hits the edges of the `boundariesElement`
        */
       padding: 5,
       /**
        * @prop {String|HTMLElement} boundariesElement='viewport'
        * The element which will define the boundaries of the popper position.
        * The popper will never be placed outside of the defined boundaries
        * (except if `keepTogether` is enabled)
        */
       boundariesElement: 'viewport'
     },
 
     /**
      * Modifier used to make the popper flow toward the inner of the reference element.
      * By default, when this modifier is disabled, the popper will be placed outside
      * the reference element.
      * @memberof modifiers
      * @inner
      */
     inner: {
       /** @prop {number} order=700 - Index used to define the order of execution */
       order: 700,
       /** @prop {Boolean} enabled=false - Whether the modifier is enabled or not */
       enabled: false,
       /** @prop {ModifierFn} */
       fn: inner
     },
 
     /**
      * Modifier used to hide the popper when its reference element is outside of the
      * popper boundaries. It will set a `x-out-of-boundaries` attribute which can
      * be used to hide with a CSS selector the popper when its reference is
      * out of boundaries.
      *
      * Requires the `preventOverflow` modifier before it in order to work.
      * @memberof modifiers
      * @inner
      */
     hide: {
       /** @prop {number} order=800 - Index used to define the order of execution */
       order: 800,
       /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
       enabled: true,
       /** @prop {ModifierFn} */
       fn: hide
     },
 
     /**
      * Computes the style that will be applied to the popper element to gets
      * properly positioned.
      *
      * Note that this modifier will not touch the DOM, it just prepares the styles
      * so that `applyStyle` modifier can apply it. This separation is useful
      * in case you need to replace `applyStyle` with a custom implementation.
      *
      * This modifier has `850` as `order` value to maintain backward compatibility
      * with previous versions of Popper.js. Expect the modifiers ordering method
      * to change in future major versions of the library.
      *
      * @memberof modifiers
      * @inner
      */
     computeStyle: {
       /** @prop {number} order=850 - Index used to define the order of execution */
       order: 850,
       /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
       enabled: true,
       /** @prop {ModifierFn} */
       fn: computeStyle,
       /**
        * @prop {Boolean} gpuAcceleration=true
        * If true, it uses the CSS 3D transformation to position the popper.
        * Otherwise, it will use the `top` and `left` properties
        */
       gpuAcceleration: true,
       /**
        * @prop {string} [x='bottom']
        * Where to anchor the X axis (`bottom` or `top`). AKA X offset origin.
        * Change this if your popper should grow in a direction different from `bottom`
        */
       x: 'bottom',
       /**
        * @prop {string} [x='left']
        * Where to anchor the Y axis (`left` or `right`). AKA Y offset origin.
        * Change this if your popper should grow in a direction different from `right`
        */
       y: 'right'
     },
 
     /**
      * Applies the computed styles to the popper element.
      *
      * All the DOM manipulations are limited to this modifier. This is useful in case
      * you want to integrate Popper.js inside a framework or view library and you
      * want to delegate all the DOM manipulations to it.
      *
      * Note that if you disable this modifier, you must make sure the popper element
      * has its position set to `absolute` before Popper.js can do its work!
      *
      * Just disable this modifier and define your own to achieve the desired effect.
      *
      * @memberof modifiers
      * @inner
      */
     applyStyle: {
       /** @prop {number} order=900 - Index used to define the order of execution */
       order: 900,
       /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
       enabled: true,
       /** @prop {ModifierFn} */
       fn: applyStyle,
       /** @prop {Function} */
       onLoad: applyStyleOnLoad,
       /**
        * @deprecated since version 1.10.0, the property moved to `computeStyle` modifier
        * @prop {Boolean} gpuAcceleration=true
        * If true, it uses the CSS 3D transformation to position the popper.
        * Otherwise, it will use the `top` and `left` properties
        */
       gpuAcceleration: undefined
     }
   };
 
   /**
    * The `dataObject` is an object containing all the information used by Popper.js.
    * This object is passed to modifiers and to the `onCreate` and `onUpdate` callbacks.
    * @name dataObject
    * @property {Object} data.instance The Popper.js instance
    * @property {String} data.placement Placement applied to popper
    * @property {String} data.originalPlacement Placement originally defined on init
    * @property {Boolean} data.flipped True if popper has been flipped by flip modifier
    * @property {Boolean} data.hide True if the reference element is out of boundaries, useful to know when to hide the popper
    * @property {HTMLElement} data.arrowElement Node used as arrow by arrow modifier
    * @property {Object} data.styles Any CSS property defined here will be applied to the popper. It expects the JavaScript nomenclature (eg. `marginBottom`)
    * @property {Object} data.arrowStyles Any CSS property defined here will be applied to the popper arrow. It expects the JavaScript nomenclature (eg. `marginBottom`)
    * @property {Object} data.boundaries Offsets of the popper boundaries
    * @property {Object} data.offsets The measurements of popper, reference and arrow elements
    * @property {Object} data.offsets.popper `top`, `left`, `width`, `height` values
    * @property {Object} data.offsets.reference `top`, `left`, `width`, `height` values
    * @property {Object} data.offsets.arrow] `top` and `left` offsets, only one of them will be different from 0
    */
 
   /**
    * Default options provided to Popper.js constructor.<br />
    * These can be overridden using the `options` argument of Popper.js.<br />
    * To override an option, simply pass an object with the same
    * structure of the `options` object, as the 3rd argument. For example:
    * ```
    * new Popper(ref, pop, {
    *   modifiers: {
    *     preventOverflow: { enabled: false }
    *   }
    * })
    * ```
    * @type {Object}
    * @static
    * @memberof Popper
    */
   var Defaults = {
     /**
      * Popper's placement.
      * @prop {Popper.placements} placement='bottom'
      */
     placement: 'bottom',
 
     /**
      * Set this to true if you want popper to position it self in 'fixed' mode
      * @prop {Boolean} positionFixed=false
      */
     positionFixed: false,
 
     /**
      * Whether events (resize, scroll) are initially enabled.
      * @prop {Boolean} eventsEnabled=true
      */
     eventsEnabled: true,
 
     /**
      * Set to true if you want to automatically remove the popper when
      * you call the `destroy` method.
      * @prop {Boolean} removeOnDestroy=false
      */
     removeOnDestroy: false,
 
     /**
      * Callback called when the popper is created.<br />
      * By default, it is set to no-op.<br />
      * Access Popper.js instance with `data.instance`.
      * @prop {onCreate}
      */
     onCreate: function onCreate() {},
 
     /**
      * Callback called when the popper is updated. This callback is not called
      * on the initialization/creation of the popper, but only on subsequent
      * updates.<br />
      * By default, it is set to no-op.<br />
      * Access Popper.js instance with `data.instance`.
      * @prop {onUpdate}
      */
     onUpdate: function onUpdate() {},
 
     /**
      * List of modifiers used to modify the offsets before they are applied to the popper.
      * They provide most of the functionalities of Popper.js.
      * @prop {modifiers}
      */
     modifiers: modifiers
   };
 
   /**
    * @callback onCreate
    * @param {dataObject} data
    */
 
   /**
    * @callback onUpdate
    * @param {dataObject} data
    */
 
   // Utils
   // Methods
   var Popper = function () {
     /**
      * Creates a new Popper.js instance.
      * @class Popper
      * @param {HTMLElement|referenceObject} reference - The reference element used to position the popper
      * @param {HTMLElement} popper - The HTML element used as the popper
      * @param {Object} options - Your custom options to override the ones defined in [Defaults](#defaults)
      * @return {Object} instance - The generated Popper.js instance
      */
     function Popper(reference, popper) {
       var _this = this;
 
       var options = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};
       classCallCheck(this, Popper);
 
       this.scheduleUpdate = function () {
         return requestAnimationFrame(_this.update);
       };
 
       // make update() debounced, so that it only runs at most once-per-tick
       this.update = debounce(this.update.bind(this));
 
       // with {} we create a new object with the options inside it
       this.options = _extends({}, Popper.Defaults, options);
 
       // init state
       this.state = {
         isDestroyed: false,
         isCreated: false,
         scrollParents: []
       };
 
       // get reference and popper elements (allow jQuery wrappers)
       this.reference = reference && reference.jquery ? reference[0] : reference;
       this.popper = popper && popper.jquery ? popper[0] : popper;
 
       // Deep merge modifiers options
       this.options.modifiers = {};
       Object.keys(_extends({}, Popper.Defaults.modifiers, options.modifiers)).forEach(function (name) {
         _this.options.modifiers[name] = _extends({}, Popper.Defaults.modifiers[name] || {}, options.modifiers ? options.modifiers[name] : {});
       });
 
       // Refactoring modifiers' list (Object => Array)
       this.modifiers = Object.keys(this.options.modifiers).map(function (name) {
         return _extends({
           name: name
         }, _this.options.modifiers[name]);
       })
       // sort the modifiers by order
       .sort(function (a, b) {
         return a.order - b.order;
       });
 
       // modifiers have the ability to execute arbitrary code when Popper.js get inited
       // such code is executed in the same order of its modifier
       // they could add new properties to their options configuration
       // BE AWARE: don't add options to `options.modifiers.name` but to `modifierOptions`!
       this.modifiers.forEach(function (modifierOptions) {
         if (modifierOptions.enabled && isFunction(modifierOptions.onLoad)) {
           modifierOptions.onLoad(_this.reference, _this.popper, _this.options, modifierOptions, _this.state);
         }
       });
 
       // fire the first update to position the popper in the right place
       this.update();
 
       var eventsEnabled = this.options.eventsEnabled;
       if (eventsEnabled) {
         // setup event listeners, they will take care of update the position in specific situations
         this.enableEventListeners();
       }
 
       this.state.eventsEnabled = eventsEnabled;
     }
 
     // We can't use class properties because they don't get listed in the
     // class prototype and break stuff like Sinon stubs
 
 
     createClass(Popper, [{
       key: 'update',
       value: function update$$1() {
         return update.call(this);
       }
     }, {
       key: 'destroy',
       value: function destroy$$1() {
         return destroy.call(this);
       }
     }, {
       key: 'enableEventListeners',
       value: function enableEventListeners$$1() {
         return enableEventListeners.call(this);
       }
     }, {
       key: 'disableEventListeners',
       value: function disableEventListeners$$1() {
         return disableEventListeners.call(this);
       }
 
       /**
        * Schedules an update. It will run on the next UI update available.
        * @method scheduleUpdate
        * @memberof Popper
        */
 
 
       /**
        * Collection of utilities useful when writing custom modifiers.
        * Starting from version 1.7, this method is available only if you
        * include `popper-utils.js` before `popper.js`.
        *
        * **DEPRECATION**: This way to access PopperUtils is deprecated
        * and will be removed in v2! Use the PopperUtils module directly instead.
        * Due to the high instability of the methods contained in Utils, we can't
        * guarantee them to follow semver. Use them at your own risk!
        * @static
        * @private
        * @type {Object}
        * @deprecated since version 1.8
        * @member Utils
        * @memberof Popper
        */
 
     }]);
     return Popper;
   }();
 
   /**
    * The `referenceObject` is an object that provides an interface compatible with Popper.js
    * and lets you use it as replacement of a real DOM node.<br />
    * You can use this method to position a popper relatively to a set of coordinates
    * in case you don't have a DOM node to use as reference.
    *
    * ```
    * new Popper(referenceObject, popperNode);
    * ```
    *
    * NB: This feature isn't supported in Internet Explorer 10.
    * @name referenceObject
    * @property {Function} data.getBoundingClientRect
    * A function that returns a set of coordinates compatible with the native `getBoundingClientRect` method.
    * @property {number} data.clientWidth
    * An ES6 getter that will return the width of the virtual reference element.
    * @property {number} data.clientHeight
    * An ES6 getter that will return the height of the virtual reference element.
    */
 
 
   Popper.Utils = (typeof window !== 'undefined' ? window : global).PopperUtils;
   Popper.placements = placements;
   Popper.Defaults = Defaults;
 
   /**
    * ------------------------------------------------------------------------
    * Constants
    * ------------------------------------------------------------------------
    */
 
   var NAME$4 = 'dropdown';
   var VERSION$4 = '4.3.1';
   var DATA_KEY$4 = 'bs.dropdown';
   var EVENT_KEY$4 = "." + DATA_KEY$4;
   var DATA_API_KEY$4 = '.data-api';
   var JQUERY_NO_CONFLICT$4 = $.fn[NAME$4];
   var ESCAPE_KEYCODE = 27; // KeyboardEvent.which value for Escape (Esc) key
 
   var SPACE_KEYCODE = 32; // KeyboardEvent.which value for space key
 
   var TAB_KEYCODE = 9; // KeyboardEvent.which value for tab key
 
   var ARROW_UP_KEYCODE = 38; // KeyboardEvent.which value for up arrow key
 
   var ARROW_DOWN_KEYCODE = 40; // KeyboardEvent.which value for down arrow key
 
   var RIGHT_MOUSE_BUTTON_WHICH = 3; // MouseEvent.which value for the right button (assuming a right-handed mouse)
 
   var REGEXP_KEYDOWN = new RegExp(ARROW_UP_KEYCODE + "|" + ARROW_DOWN_KEYCODE + "|" + ESCAPE_KEYCODE);
   var Event$4 = {
     HIDE: "hide" + EVENT_KEY$4,
     HIDDEN: "hidden" + EVENT_KEY$4,
     SHOW: "show" + EVENT_KEY$4,
     SHOWN: "shown" + EVENT_KEY$4,
     CLICK: "click" + EVENT_KEY$4,
     CLICK_DATA_API: "click" + EVENT_KEY$4 + DATA_API_KEY$4,
     KEYDOWN_DATA_API: "keydown" + EVENT_KEY$4 + DATA_API_KEY$4,
     KEYUP_DATA_API: "keyup" + EVENT_KEY$4 + DATA_API_KEY$4
   };
   var ClassName$4 = {
     DISABLED: 'disabled',
     SHOW: 'show',
     DROPUP: 'dropup',
     DROPRIGHT: 'dropright',
     DROPLEFT: 'dropleft',
     MENURIGHT: 'dropdown-menu-right',
     MENULEFT: 'dropdown-menu-left',
     POSITION_STATIC: 'position-static'
   };
   var Selector$4 = {
     DATA_TOGGLE: '[data-toggle="dropdown"]',
     FORM_CHILD: '.dropdown form',
     MENU: '.dropdown-menu',
     NAVBAR_NAV: '.navbar-nav',
     VISIBLE_ITEMS: '.dropdown-menu .dropdown-item:not(.disabled):not(:disabled)'
   };
   var AttachmentMap = {
     TOP: 'top-start',
     TOPEND: 'top-end',
     BOTTOM: 'bottom-start',
     BOTTOMEND: 'bottom-end',
     RIGHT: 'right-start',
     RIGHTEND: 'right-end',
     LEFT: 'left-start',
     LEFTEND: 'left-end'
   };
   var Default$2 = {
     offset: 0,
     flip: true,
     boundary: 'scrollParent',
     reference: 'toggle',
     display: 'dynamic'
   };
   var DefaultType$2 = {
     offset: '(number|string|function)',
     flip: 'boolean',
     boundary: '(string|element)',
     reference: '(string|element)',
     display: 'string'
     /**
      * ------------------------------------------------------------------------
      * Class Definition
      * ------------------------------------------------------------------------
      */
 
   };
 
   var Dropdown =
   /*#__PURE__*/
   function () {
     function Dropdown(element, config) {
       this._element = element;
       this._popper = null;
       this._config = this._getConfig(config);
       this._menu = this._getMenuElement();
       this._inNavbar = this._detectNavbar();
 
       this._addEventListeners();
     } // Getters
 
 
     var _proto = Dropdown.prototype;
 
     // Public
     _proto.toggle = function toggle() {
       if (this._element.disabled || $(this._element).hasClass(ClassName$4.DISABLED)) {
         return;
       }
 
       var parent = Dropdown._getParentFromElement(this._element);
 
       var isActive = $(this._menu).hasClass(ClassName$4.SHOW);
 
       Dropdown._clearMenus();
 
       if (isActive) {
         return;
       }
 
       var relatedTarget = {
         relatedTarget: this._element
       };
       var showEvent = $.Event(Event$4.SHOW, relatedTarget);
       $(parent).trigger(showEvent);
 
       if (showEvent.isDefaultPrevented()) {
         return;
       } // Disable totally Popper.js for Dropdown in Navbar
 
 
       if (!this._inNavbar) {
         /**
          * Check for Popper dependency
          * Popper - https://popper.js.org
          */
         if (typeof Popper === 'undefined') {
           throw new TypeError('Bootstrap\'s dropdowns require Popper.js (https://popper.js.org/)');
         }
 
         var referenceElement = this._element;
 
         if (this._config.reference === 'parent') {
           referenceElement = parent;
         } else if (Util.isElement(this._config.reference)) {
           referenceElement = this._config.reference; // Check if it's jQuery element
 
           if (typeof this._config.reference.jquery !== 'undefined') {
             referenceElement = this._config.reference[0];
           }
         } // If boundary is not `scrollParent`, then set position to `static`
         // to allow the menu to "escape" the scroll parent's boundaries
         // https://github.com/twbs/bootstrap/issues/24251
 
 
         if (this._config.boundary !== 'scrollParent') {
           $(parent).addClass(ClassName$4.POSITION_STATIC);
         }
 
         this._popper = new Popper(referenceElement, this._menu, this._getPopperConfig());
       } // If this is a touch-enabled device we add extra
       // empty mouseover listeners to the body's immediate children;
       // only needed because of broken event delegation on iOS
       // https://www.quirksmode.org/blog/archives/2014/02/mouse_event_bub.html
 
 
       if ('ontouchstart' in document.documentElement && $(parent).closest(Selector$4.NAVBAR_NAV).length === 0) {
         $(document.body).children().on('mouseover', null, $.noop);
       }
 
       this._element.focus();
 
       this._element.setAttribute('aria-expanded', true);
 
       $(this._menu).toggleClass(ClassName$4.SHOW);
       $(parent).toggleClass(ClassName$4.SHOW).trigger($.Event(Event$4.SHOWN, relatedTarget));
     };
 
     _proto.show = function show() {
       if (this._element.disabled || $(this._element).hasClass(ClassName$4.DISABLED) || $(this._menu).hasClass(ClassName$4.SHOW)) {
         return;
       }
 
       var relatedTarget = {
         relatedTarget: this._element
       };
       var showEvent = $.Event(Event$4.SHOW, relatedTarget);
 
       var parent = Dropdown._getParentFromElement(this._element);
 
       $(parent).trigger(showEvent);
 
       if (showEvent.isDefaultPrevented()) {
         return;
       }
 
       $(this._menu).toggleClass(ClassName$4.SHOW);
       $(parent).toggleClass(ClassName$4.SHOW).trigger($.Event(Event$4.SHOWN, relatedTarget));
     };
 
     _proto.hide = function hide() {
       if (this._element.disabled || $(this._element).hasClass(ClassName$4.DISABLED) || !$(this._menu).hasClass(ClassName$4.SHOW)) {
         return;
       }
 
       var relatedTarget = {
         relatedTarget: this._element
       };
       var hideEvent = $.Event(Event$4.HIDE, relatedTarget);
 
       var parent = Dropdown._getParentFromElement(this._element);
 
       $(parent).trigger(hideEvent);
 
       if (hideEvent.isDefaultPrevented()) {
         return;
       }
 
       $(this._menu).toggleClass(ClassName$4.SHOW);
       $(parent).toggleClass(ClassName$4.SHOW).trigger($.Event(Event$4.HIDDEN, relatedTarget));
     };
 
     _proto.dispose = function dispose() {
       $.removeData(this._element, DATA_KEY$4);
       $(this._element).off(EVENT_KEY$4);
       this._element = null;
       this._menu = null;
 
       if (this._popper !== null) {
         this._popper.destroy();
 
         this._popper = null;
       }
     };
 
     _proto.update = function update() {
       this._inNavbar = this._detectNavbar();
 
       if (this._popper !== null) {
         this._popper.scheduleUpdate();
       }
     } // Private
     ;
 
     _proto._addEventListeners = function _addEventListeners() {
       var _this = this;
 
       $(this._element).on(Event$4.CLICK, function (event) {
         event.preventDefault();
         event.stopPropagation();
 
         _this.toggle();
       });
     };
 
     _proto._getConfig = function _getConfig(config) {
       config = _objectSpread({}, this.constructor.Default, $(this._element).data(), config);
       Util.typeCheckConfig(NAME$4, config, this.constructor.DefaultType);
       return config;
     };
 
     _proto._getMenuElement = function _getMenuElement() {
       if (!this._menu) {
         var parent = Dropdown._getParentFromElement(this._element);
 
         if (parent) {
           this._menu = parent.querySelector(Selector$4.MENU);
         }
       }
 
       return this._menu;
     };
 
     _proto._getPlacement = function _getPlacement() {
       var $parentDropdown = $(this._element.parentNode);
       var placement = AttachmentMap.BOTTOM; // Handle dropup
 
       if ($parentDropdown.hasClass(ClassName$4.DROPUP)) {
         placement = AttachmentMap.TOP;
 
         if ($(this._menu).hasClass(ClassName$4.MENURIGHT)) {
           placement = AttachmentMap.TOPEND;
         }
       } else if ($parentDropdown.hasClass(ClassName$4.DROPRIGHT)) {
         placement = AttachmentMap.RIGHT;
       } else if ($parentDropdown.hasClass(ClassName$4.DROPLEFT)) {
         placement = AttachmentMap.LEFT;
       } else if ($(this._menu).hasClass(ClassName$4.MENURIGHT)) {
         placement = AttachmentMap.BOTTOMEND;
       }
 
       return placement;
     };
 
     _proto._detectNavbar = function _detectNavbar() {
       return $(this._element).closest('.navbar').length > 0;
     };
 
     _proto._getOffset = function _getOffset() {
       var _this2 = this;
 
       var offset = {};
 
       if (typeof this._config.offset === 'function') {
         offset.fn = function (data) {
           data.offsets = _objectSpread({}, data.offsets, _this2._config.offset(data.offsets, _this2._element) || {});
           return data;
         };
       } else {
         offset.offset = this._config.offset;
       }
 
       return offset;
     };
 
     _proto._getPopperConfig = function _getPopperConfig() {
       var popperConfig = {
         placement: this._getPlacement(),
         modifiers: {
           offset: this._getOffset(),
           flip: {
             enabled: this._config.flip
           },
           preventOverflow: {
             boundariesElement: this._config.boundary
           }
         } // Disable Popper.js if we have a static display
 
       };
 
       if (this._config.display === 'static') {
         popperConfig.modifiers.applyStyle = {
           enabled: false
         };
       }
 
       return popperConfig;
     } // Static
     ;
 
     Dropdown._jQueryInterface = function _jQueryInterface(config) {
       return this.each(function () {
         var data = $(this).data(DATA_KEY$4);
 
         var _config = typeof config === 'object' ? config : null;
 
         if (!data) {
           data = new Dropdown(this, _config);
           $(this).data(DATA_KEY$4, data);
         }
 
         if (typeof config === 'string') {
           if (typeof data[config] === 'undefined') {
             throw new TypeError("No method named \"" + config + "\"");
           }
 
           data[config]();
         }
       });
     };
 
     Dropdown._clearMenus = function _clearMenus(event) {
       if (event && (event.which === RIGHT_MOUSE_BUTTON_WHICH || event.type === 'keyup' && event.which !== TAB_KEYCODE)) {
         return;
       }
 
       var toggles = [].slice.call(document.querySelectorAll(Selector$4.DATA_TOGGLE));
 
       for (var i = 0, len = toggles.length; i < len; i++) {
         var parent = Dropdown._getParentFromElement(toggles[i]);
 
         var context = $(toggles[i]).data(DATA_KEY$4);
         var relatedTarget = {
           relatedTarget: toggles[i]
         };
 
         if (event && event.type === 'click') {
           relatedTarget.clickEvent = event;
         }
 
         if (!context) {
           continue;
         }
 
         var dropdownMenu = context._menu;
 
         if (!$(parent).hasClass(ClassName$4.SHOW)) {
           continue;
         }
 
         if (event && (event.type === 'click' && /input|textarea/i.test(event.target.tagName) || event.type === 'keyup' && event.which === TAB_KEYCODE) && $.contains(parent, event.target)) {
           continue;
         }
 
         var hideEvent = $.Event(Event$4.HIDE, relatedTarget);
         $(parent).trigger(hideEvent);
 
         if (hideEvent.isDefaultPrevented()) {
           continue;
         } // If this is a touch-enabled device we remove the extra
         // empty mouseover listeners we added for iOS support
 
 
         if ('ontouchstart' in document.documentElement) {
           $(document.body).children().off('mouseover', null, $.noop);
         }
 
         toggles[i].setAttribute('aria-expanded', 'false');
         $(dropdownMenu).removeClass(ClassName$4.SHOW);
         $(parent).removeClass(ClassName$4.SHOW).trigger($.Event(Event$4.HIDDEN, relatedTarget));
       }
     };
 
     Dropdown._getParentFromElement = function _getParentFromElement(element) {
       var parent;
       var selector = Util.getSelectorFromElement(element);
 
       if (selector) {
         parent = document.querySelector(selector);
       }
 
       return parent || element.parentNode;
     } // eslint-disable-next-line complexity
     ;
 
     Dropdown._dataApiKeydownHandler = function _dataApiKeydownHandler(event) {
       // If not input/textarea:
       //  - And not a key in REGEXP_KEYDOWN => not a dropdown command
       // If input/textarea:
       //  - If space key => not a dropdown command
       //  - If key is other than escape
       //    - If key is not up or down => not a dropdown command
       //    - If trigger inside the menu => not a dropdown command
       if (/input|textarea/i.test(event.target.tagName) ? event.which === SPACE_KEYCODE || event.which !== ESCAPE_KEYCODE && (event.which !== ARROW_DOWN_KEYCODE && event.which !== ARROW_UP_KEYCODE || $(event.target).closest(Selector$4.MENU).length) : !REGEXP_KEYDOWN.test(event.which)) {
         return;
       }
 
       event.preventDefault();
       event.stopPropagation();
 
       if (this.disabled || $(this).hasClass(ClassName$4.DISABLED)) {
         return;
       }
 
       var parent = Dropdown._getParentFromElement(this);
 
       var isActive = $(parent).hasClass(ClassName$4.SHOW);
 
       if (!isActive || isActive && (event.which === ESCAPE_KEYCODE || event.which === SPACE_KEYCODE)) {
         if (event.which === ESCAPE_KEYCODE) {
           var toggle = parent.querySelector(Selector$4.DATA_TOGGLE);
           $(toggle).trigger('focus');
         }
 
         $(this).trigger('click');
         return;
       }
 
       var items = [].slice.call(parent.querySelectorAll(Selector$4.VISIBLE_ITEMS));
 
       if (items.length === 0) {
         return;
       }
 
       var index = items.indexOf(event.target);
 
       if (event.which === ARROW_UP_KEYCODE && index > 0) {
         // Up
         index--;
       }
 
       if (event.which === ARROW_DOWN_KEYCODE && index < items.length - 1) {
         // Down
         index++;
       }
 
       if (index < 0) {
         index = 0;
       }
 
       items[index].focus();
     };
 
     _createClass(Dropdown, null, [{
       key: "VERSION",
       get: function get() {
         return VERSION$4;
       }
     }, {
       key: "Default",
       get: function get() {
         return Default$2;
       }
     }, {
       key: "DefaultType",
       get: function get() {
         return DefaultType$2;
       }
     }]);
 
     return Dropdown;
   }();
   /**
    * ------------------------------------------------------------------------
    * Data Api implementation
    * ------------------------------------------------------------------------
    */
 
 
   $(document).on(Event$4.KEYDOWN_DATA_API, Selector$4.DATA_TOGGLE, Dropdown._dataApiKeydownHandler).on(Event$4.KEYDOWN_DATA_API, Selector$4.MENU, Dropdown._dataApiKeydownHandler).on(Event$4.CLICK_DATA_API + " " + Event$4.KEYUP_DATA_API, Dropdown._clearMenus).on(Event$4.CLICK_DATA_API, Selector$4.DATA_TOGGLE, function (event) {
     event.preventDefault();
     event.stopPropagation();
 
     Dropdown._jQueryInterface.call($(this), 'toggle');
   }).on(Event$4.CLICK_DATA_API, Selector$4.FORM_CHILD, function (e) {
     e.stopPropagation();
   });
   /**
    * ------------------------------------------------------------------------
    * jQuery
    * ------------------------------------------------------------------------
    */
 
   $.fn[NAME$4] = Dropdown._jQueryInterface;
   $.fn[NAME$4].Constructor = Dropdown;
 
   $.fn[NAME$4].noConflict = function () {
     $.fn[NAME$4] = JQUERY_NO_CONFLICT$4;
     return Dropdown._jQueryInterface;
   };
 
   /**
    * ------------------------------------------------------------------------
    * Constants
    * ------------------------------------------------------------------------
    */
 
   var NAME$5 = 'modal';
   var VERSION$5 = '4.3.1';
   var DATA_KEY$5 = 'bs.modal';
   var EVENT_KEY$5 = "." + DATA_KEY$5;
   var DATA_API_KEY$5 = '.data-api';
   var JQUERY_NO_CONFLICT$5 = $.fn[NAME$5];
   var ESCAPE_KEYCODE$1 = 27; // KeyboardEvent.which value for Escape (Esc) key
 
   var Default$3 = {
     backdrop: true,
     keyboard: true,
     focus: true,
     show: true
   };
   var DefaultType$3 = {
     backdrop: '(boolean|string)',
     keyboard: 'boolean',
     focus: 'boolean',
     show: 'boolean'
   };
   var Event$5 = {
     HIDE: "hide" + EVENT_KEY$5,
     HIDDEN: "hidden" + EVENT_KEY$5,
     SHOW: "show" + EVENT_KEY$5,
     SHOWN: "shown" + EVENT_KEY$5,
     FOCUSIN: "focusin" + EVENT_KEY$5,
     RESIZE: "resize" + EVENT_KEY$5,
     CLICK_DISMISS: "click.dismiss" + EVENT_KEY$5,
     KEYDOWN_DISMISS: "keydown.dismiss" + EVENT_KEY$5,
     MOUSEUP_DISMISS: "mouseup.dismiss" + EVENT_KEY$5,
     MOUSEDOWN_DISMISS: "mousedown.dismiss" + EVENT_KEY$5,
     CLICK_DATA_API: "click" + EVENT_KEY$5 + DATA_API_KEY$5
   };
   var ClassName$5 = {
     SCROLLABLE: 'modal-dialog-scrollable',
     SCROLLBAR_MEASURER: 'modal-scrollbar-measure',
     BACKDROP: 'modal-backdrop',
     OPEN: 'modal-open',
     FADE: 'fade',
     SHOW: 'show'
   };
   var Selector$5 = {
     DIALOG: '.modal-dialog',
     MODAL_BODY: '.modal-body',
     DATA_TOGGLE: '[data-toggle="modal"]',
     DATA_DISMISS: '[data-dismiss="modal"]',
     FIXED_CONTENT: '.fixed-top, .fixed-bottom, .is-fixed, .sticky-top',
     STICKY_CONTENT: '.sticky-top'
     /**
      * ------------------------------------------------------------------------
      * Class Definition
      * ------------------------------------------------------------------------
      */
 
   };
 
   var Modal =
   /*#__PURE__*/
   function () {
     function Modal(element, config) {
       this._config = this._getConfig(config);
       this._element = element;
       this._dialog = element.querySelector(Selector$5.DIALOG);
       this._backdrop = null;
       this._isShown = false;
       this._isBodyOverflowing = false;
       this._ignoreBackdropClick = false;
       this._isTransitioning = false;
       this._scrollbarWidth = 0;
     } // Getters
 
 
     var _proto = Modal.prototype;
 
     // Public
     _proto.toggle = function toggle(relatedTarget) {
       return this._isShown ? this.hide() : this.show(relatedTarget);
     };
 
     _proto.show = function show(relatedTarget) {
       var _this = this;
 
       if (this._isShown || this._isTransitioning) {
         return;
       }
 
       if ($(this._element).hasClass(ClassName$5.FADE)) {
         this._isTransitioning = true;
       }
 
       var showEvent = $.Event(Event$5.SHOW, {
         relatedTarget: relatedTarget
       });
       $(this._element).trigger(showEvent);
 
       if (this._isShown || showEvent.isDefaultPrevented()) {
         return;
       }
 
       this._isShown = true;
 
       this._checkScrollbar();
 
       this._setScrollbar();
 
       this._adjustDialog();
 
       this._setEscapeEvent();
 
       this._setResizeEvent();
 
       $(this._element).on(Event$5.CLICK_DISMISS, Selector$5.DATA_DISMISS, function (event) {
         return _this.hide(event);
       });
       $(this._dialog).on(Event$5.MOUSEDOWN_DISMISS, function () {
         $(_this._element).one(Event$5.MOUSEUP_DISMISS, function (event) {
           if ($(event.target).is(_this._element)) {
             _this._ignoreBackdropClick = true;
           }
         });
       });
 
       this._showBackdrop(function () {
         return _this._showElement(relatedTarget);
       });
     };
 
     _proto.hide = function hide(event) {
       var _this2 = this;
 
       if (event) {
         event.preventDefault();
       }
 
       if (!this._isShown || this._isTransitioning) {
         return;
       }
 
       var hideEvent = $.Event(Event$5.HIDE);
       $(this._element).trigger(hideEvent);
 
       if (!this._isShown || hideEvent.isDefaultPrevented()) {
         return;
       }
 
       this._isShown = false;
       var transition = $(this._element).hasClass(ClassName$5.FADE);
 
       if (transition) {
         this._isTransitioning = true;
       }
 
       this._setEscapeEvent();
 
       this._setResizeEvent();
 
       $(document).off(Event$5.FOCUSIN);
       $(this._element).removeClass(ClassName$5.SHOW);
       $(this._element).off(Event$5.CLICK_DISMISS);
       $(this._dialog).off(Event$5.MOUSEDOWN_DISMISS);
 
       if (transition) {
         var transitionDuration = Util.getTransitionDurationFromElement(this._element);
         $(this._element).one(Util.TRANSITION_END, function (event) {
           return _this2._hideModal(event);
         }).emulateTransitionEnd(transitionDuration);
       } else {
         this._hideModal();
       }
     };
 
     _proto.dispose = function dispose() {
       [window, this._element, this._dialog].forEach(function (htmlElement) {
         return $(htmlElement).off(EVENT_KEY$5);
       });
       /**
        * `document` has 2 events `Event.FOCUSIN` and `Event.CLICK_DATA_API`
        * Do not move `document` in `htmlElements` array
        * It will remove `Event.CLICK_DATA_API` event that should remain
        */
 
       $(document).off(Event$5.FOCUSIN);
       $.removeData(this._element, DATA_KEY$5);
       this._config = null;
       this._element = null;
       this._dialog = null;
       this._backdrop = null;
       this._isShown = null;
       this._isBodyOverflowing = null;
       this._ignoreBackdropClick = null;
       this._isTransitioning = null;
       this._scrollbarWidth = null;
     };
 
     _proto.handleUpdate = function handleUpdate() {
       this._adjustDialog();
     } // Private
     ;
 
     _proto._getConfig = function _getConfig(config) {
       config = _objectSpread({}, Default$3, config);
       Util.typeCheckConfig(NAME$5, config, DefaultType$3);
       return config;
     };
 
     _proto._showElement = function _showElement(relatedTarget) {
       var _this3 = this;
 
       var transition = $(this._element).hasClass(ClassName$5.FADE);
 
       if (!this._element.parentNode || this._element.parentNode.nodeType !== Node.ELEMENT_NODE) {
         // Don't move modal's DOM position
         document.body.appendChild(this._element);
       }
 
       this._element.style.display = 'block';
 
       this._element.removeAttribute('aria-hidden');
 
       this._element.setAttribute('aria-modal', true);
 
       if ($(this._dialog).hasClass(ClassName$5.SCROLLABLE)) {
         this._dialog.querySelector(Selector$5.MODAL_BODY).scrollTop = 0;
       } else {
         this._element.scrollTop = 0;
       }
 
       if (transition) {
         Util.reflow(this._element);
       }
 
       $(this._element).addClass(ClassName$5.SHOW);
 
       if (this._config.focus) {
         this._enforceFocus();
       }
 
       var shownEvent = $.Event(Event$5.SHOWN, {
         relatedTarget: relatedTarget
       });
 
       var transitionComplete = function transitionComplete() {
         if (_this3._config.focus) {
           _this3._element.focus();
         }
 
         _this3._isTransitioning = false;
         $(_this3._element).trigger(shownEvent);
       };
 
       if (transition) {
         var transitionDuration = Util.getTransitionDurationFromElement(this._dialog);
         $(this._dialog).one(Util.TRANSITION_END, transitionComplete).emulateTransitionEnd(transitionDuration);
       } else {
         transitionComplete();
       }
     };
 
     _proto._enforceFocus = function _enforceFocus() {
       var _this4 = this;
 
       $(document).off(Event$5.FOCUSIN) // Guard against infinite focus loop
       .on(Event$5.FOCUSIN, function (event) {
         if (document !== event.target && _this4._element !== event.target && $(_this4._element).has(event.target).length === 0) {
           _this4._element.focus();
         }
       });
     };
 
     _proto._setEscapeEvent = function _setEscapeEvent() {
       var _this5 = this;
 
       if (this._isShown && this._config.keyboard) {
         $(this._element).on(Event$5.KEYDOWN_DISMISS, function (event) {
           if (event.which === ESCAPE_KEYCODE$1) {
             event.preventDefault();
 
             _this5.hide();
           }
         });
       } else if (!this._isShown) {
         $(this._element).off(Event$5.KEYDOWN_DISMISS);
       }
     };
 
     _proto._setResizeEvent = function _setResizeEvent() {
       var _this6 = this;
 
       if (this._isShown) {
         $(window).on(Event$5.RESIZE, function (event) {
           return _this6.handleUpdate(event);
         });
       } else {
         $(window).off(Event$5.RESIZE);
       }
     };
 
     _proto._hideModal = function _hideModal() {
       var _this7 = this;
 
       this._element.style.display = 'none';
 
       this._element.setAttribute('aria-hidden', true);
 
       this._element.removeAttribute('aria-modal');
 
       this._isTransitioning = false;
 
       this._showBackdrop(function () {
         $(document.body).removeClass(ClassName$5.OPEN);
 
         _this7._resetAdjustments();
 
         _this7._resetScrollbar();
 
         $(_this7._element).trigger(Event$5.HIDDEN);
       });
     };
 
     _proto._removeBackdrop = function _removeBackdrop() {
       if (this._backdrop) {
         $(this._backdrop).remove();
         this._backdrop = null;
       }
     };
 
     _proto._showBackdrop = function _showBackdrop(callback) {
       var _this8 = this;
 
       var animate = $(this._element).hasClass(ClassName$5.FADE) ? ClassName$5.FADE : '';
 
       if (this._isShown && this._config.backdrop) {
         this._backdrop = document.createElement('div');
         this._backdrop.className = ClassName$5.BACKDROP;
 
         if (animate) {
           this._backdrop.classList.add(animate);
         }
 
         $(this._backdrop).appendTo(document.body);
         $(this._element).on(Event$5.CLICK_DISMISS, function (event) {
           if (_this8._ignoreBackdropClick) {
             _this8._ignoreBackdropClick = false;
             return;
           }
 
           if (event.target !== event.currentTarget) {
             return;
           }
 
           if (_this8._config.backdrop === 'static') {
             _this8._element.focus();
           } else {
             _this8.hide();
           }
         });
 
         if (animate) {
           Util.reflow(this._backdrop);
         }
 
         $(this._backdrop).addClass(ClassName$5.SHOW);
 
         if (!callback) {
           return;
         }
 
         if (!animate) {
           callback();
           return;
         }
 
         var backdropTransitionDuration = Util.getTransitionDurationFromElement(this._backdrop);
         $(this._backdrop).one(Util.TRANSITION_END, callback).emulateTransitionEnd(backdropTransitionDuration);
       } else if (!this._isShown && this._backdrop) {
         $(this._backdrop).removeClass(ClassName$5.SHOW);
 
         var callbackRemove = function callbackRemove() {
           _this8._removeBackdrop();
 
           if (callback) {
             callback();
           }
         };
 
         if ($(this._element).hasClass(ClassName$5.FADE)) {
           var _backdropTransitionDuration = Util.getTransitionDurationFromElement(this._backdrop);
 
           $(this._backdrop).one(Util.TRANSITION_END, callbackRemove).emulateTransitionEnd(_backdropTransitionDuration);
         } else {
           callbackRemove();
         }
       } else if (callback) {
         callback();
       }
     } // ----------------------------------------------------------------------
     // the following methods are used to handle overflowing modals
     // todo (fat): these should probably be refactored out of modal.js
     // ----------------------------------------------------------------------
     ;
 
     _proto._adjustDialog = function _adjustDialog() {
       var isModalOverflowing = this._element.scrollHeight > document.documentElement.clientHeight;
 
       if (!this._isBodyOverflowing && isModalOverflowing) {
         this._element.style.paddingLeft = this._scrollbarWidth + "px";
       }
 
       if (this._isBodyOverflowing && !isModalOverflowing) {
         this._element.style.paddingRight = this._scrollbarWidth + "px";
       }
     };
 
     _proto._resetAdjustments = function _resetAdjustments() {
       this._element.style.paddingLeft = '';
       this._element.style.paddingRight = '';
     };
 
     _proto._checkScrollbar = function _checkScrollbar() {
       var rect = document.body.getBoundingClientRect();
       this._isBodyOverflowing = rect.left + rect.right < window.innerWidth;
       this._scrollbarWidth = this._getScrollbarWidth();
     };
 
     _proto._setScrollbar = function _setScrollbar() {
       var _this9 = this;
 
       if (this._isBodyOverflowing) {
         // Note: DOMNode.style.paddingRight returns the actual value or '' if not set
         //   while $(DOMNode).css('padding-right') returns the calculated value or 0 if not set
         var fixedContent = [].slice.call(document.querySelectorAll(Selector$5.FIXED_CONTENT));
         var stickyContent = [].slice.call(document.querySelectorAll(Selector$5.STICKY_CONTENT)); // Adjust fixed content padding
 
         $(fixedContent).each(function (index, element) {
           var actualPadding = element.style.paddingRight;
           var calculatedPadding = $(element).css('padding-right');
           $(element).data('padding-right', actualPadding).css('padding-right', parseFloat(calculatedPadding) + _this9._scrollbarWidth + "px");
         }); // Adjust sticky content margin
 
         $(stickyContent).each(function (index, element) {
           var actualMargin = element.style.marginRight;
           var calculatedMargin = $(element).css('margin-right');
           $(element).data('margin-right', actualMargin).css('margin-right', parseFloat(calculatedMargin) - _this9._scrollbarWidth + "px");
         }); // Adjust body padding
 
         var actualPadding = document.body.style.paddingRight;
         var calculatedPadding = $(document.body).css('padding-right');
         $(document.body).data('padding-right', actualPadding).css('padding-right', parseFloat(calculatedPadding) + this._scrollbarWidth + "px");
       }
 
       $(document.body).addClass(ClassName$5.OPEN);
     };
 
     _proto._resetScrollbar = function _resetScrollbar() {
       // Restore fixed content padding
       var fixedContent = [].slice.call(document.querySelectorAll(Selector$5.FIXED_CONTENT));
       $(fixedContent).each(function (index, element) {
         var padding = $(element).data('padding-right');
         $(element).removeData('padding-right');
         element.style.paddingRight = padding ? padding : '';
       }); // Restore sticky content
 
       var elements = [].slice.call(document.querySelectorAll("" + Selector$5.STICKY_CONTENT));
       $(elements).each(function (index, element) {
         var margin = $(element).data('margin-right');
 
         if (typeof margin !== 'undefined') {
           $(element).css('margin-right', margin).removeData('margin-right');
         }
       }); // Restore body padding
 
       var padding = $(document.body).data('padding-right');
       $(document.body).removeData('padding-right');
       document.body.style.paddingRight = padding ? padding : '';
     };
 
     _proto._getScrollbarWidth = function _getScrollbarWidth() {
       // thx d.walsh
       var scrollDiv = document.createElement('div');
       scrollDiv.className = ClassName$5.SCROLLBAR_MEASURER;
       document.body.appendChild(scrollDiv);
       var scrollbarWidth = scrollDiv.getBoundingClientRect().width - scrollDiv.clientWidth;
       document.body.removeChild(scrollDiv);
       return scrollbarWidth;
     } // Static
     ;
 
     Modal._jQueryInterface = function _jQueryInterface(config, relatedTarget) {
       return this.each(function () {
         var data = $(this).data(DATA_KEY$5);
 
         var _config = _objectSpread({}, Default$3, $(this).data(), typeof config === 'object' && config ? config : {});
 
         if (!data) {
           data = new Modal(this, _config);
           $(this).data(DATA_KEY$5, data);
         }
 
         if (typeof config === 'string') {
           if (typeof data[config] === 'undefined') {
             throw new TypeError("No method named \"" + config + "\"");
           }
 
           data[config](relatedTarget);
         } else if (_config.show) {
           data.show(relatedTarget);
         }
       });
     };
 
     _createClass(Modal, null, [{
       key: "VERSION",
       get: function get() {
         return VERSION$5;
       }
     }, {
       key: "Default",
       get: function get() {
         return Default$3;
       }
     }]);
 
     return Modal;
   }();
   /**
    * ------------------------------------------------------------------------
    * Data Api implementation
    * ------------------------------------------------------------------------
    */
 
 
   $(document).on(Event$5.CLICK_DATA_API, Selector$5.DATA_TOGGLE, function (event) {
     var _this10 = this;
 
     var target;
     var selector = Util.getSelectorFromElement(this);
 
     if (selector) {
       target = document.querySelector(selector);
     }
 
     var config = $(target).data(DATA_KEY$5) ? 'toggle' : _objectSpread({}, $(target).data(), $(this).data());
 
     if (this.tagName === 'A' || this.tagName === 'AREA') {
       event.preventDefault();
     }
 
     var $target = $(target).one(Event$5.SHOW, function (showEvent) {
       if (showEvent.isDefaultPrevented()) {
         // Only register focus restorer if modal will actually get shown
         return;
       }
 
       $target.one(Event$5.HIDDEN, function () {
         if ($(_this10).is(':visible')) {
           _this10.focus();
         }
       });
     });
 
     Modal._jQueryInterface.call($(target), config, this);
   });
   /**
    * ------------------------------------------------------------------------
    * jQuery
    * ------------------------------------------------------------------------
    */
 
   $.fn[NAME$5] = Modal._jQueryInterface;
   $.fn[NAME$5].Constructor = Modal;
 
   $.fn[NAME$5].noConflict = function () {
     $.fn[NAME$5] = JQUERY_NO_CONFLICT$5;
     return Modal._jQueryInterface;
   };
 
   /**
    * --------------------------------------------------------------------------
    * Bootstrap (v4.3.1): tools/sanitizer.js
    * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
    * --------------------------------------------------------------------------
    */
   var uriAttrs = ['background', 'cite', 'href', 'itemtype', 'longdesc', 'poster', 'src', 'xlink:href'];
   var ARIA_ATTRIBUTE_PATTERN = /^aria-[\w-]*$/i;
   var DefaultWhitelist = {
     // Global attributes allowed on any supplied element below.
     '*': ['class', 'dir', 'id', 'lang', 'role', ARIA_ATTRIBUTE_PATTERN],
     a: ['target', 'href', 'title', 'rel'],
     area: [],
     b: [],
     br: [],
     col: [],
     code: [],
     div: [],
     em: [],
     hr: [],
     h1: [],
     h2: [],
     h3: [],
     h4: [],
     h5: [],
     h6: [],
     i: [],
     img: ['src', 'alt', 'title', 'width', 'height'],
     li: [],
     ol: [],
     p: [],
     pre: [],
     s: [],
     small: [],
     span: [],
     sub: [],
     sup: [],
     strong: [],
     u: [],
     ul: []
     /**
      * A pattern that recognizes a commonly useful subset of URLs that are safe.
      *
      * Shoutout to Angular 7 https://github.com/angular/angular/blob/7.2.4/packages/core/src/sanitization/url_sanitizer.ts
      */
 
   };
   var SAFE_URL_PATTERN = /^(?:(?:https?|mailto|ftp|tel|file):|[^&:/?#]*(?:[/?#]|$))/gi;
   /**
    * A pattern that matches safe data URLs. Only matches image, video and audio types.
    *
    * Shoutout to Angular 7 https://github.com/angular/angular/blob/7.2.4/packages/core/src/sanitization/url_sanitizer.ts
    */
 
   var DATA_URL_PATTERN = /^data:(?:image\/(?:bmp|gif|jpeg|jpg|png|tiff|webp)|video\/(?:mpeg|mp4|ogg|webm)|audio\/(?:mp3|oga|ogg|opus));base64,[a-z0-9+/]+=*$/i;
 
   function allowedAttribute(attr, allowedAttributeList) {
     var attrName = attr.nodeName.toLowerCase();
 
     if (allowedAttributeList.indexOf(attrName) !== -1) {
       if (uriAttrs.indexOf(attrName) !== -1) {
         return Boolean(attr.nodeValue.match(SAFE_URL_PATTERN) || attr.nodeValue.match(DATA_URL_PATTERN));
       }
 
       return true;
     }
 
     var regExp = allowedAttributeList.filter(function (attrRegex) {
       return attrRegex instanceof RegExp;
     }); // Check if a regular expression validates the attribute.
 
     for (var i = 0, l = regExp.length; i < l; i++) {
       if (attrName.match(regExp[i])) {
         return true;
       }
     }
 
     return false;
   }
 
   function sanitizeHtml(unsafeHtml, whiteList, sanitizeFn) {
     if (unsafeHtml.length === 0) {
       return unsafeHtml;
     }
 
     if (sanitizeFn && typeof sanitizeFn === 'function') {
       return sanitizeFn(unsafeHtml);
     }
 
     var domParser = new window.DOMParser();
     var createdDocument = domParser.parseFromString(unsafeHtml, 'text/html');
     var whitelistKeys = Object.keys(whiteList);
     var elements = [].slice.call(createdDocument.body.querySelectorAll('*'));
 
     var _loop = function _loop(i, len) {
       var el = elements[i];
       var elName = el.nodeName.toLowerCase();
 
       if (whitelistKeys.indexOf(el.nodeName.toLowerCase()) === -1) {
         el.parentNode.removeChild(el);
         return "continue";
       }
 
       var attributeList = [].slice.call(el.attributes);
       var whitelistedAttributes = [].concat(whiteList['*'] || [], whiteList[elName] || []);
       attributeList.forEach(function (attr) {
         if (!allowedAttribute(attr, whitelistedAttributes)) {
           el.removeAttribute(attr.nodeName);
         }
       });
     };
 
     for (var i = 0, len = elements.length; i < len; i++) {
       var _ret = _loop(i, len);
 
       if (_ret === "continue") continue;
     }
 
     return createdDocument.body.innerHTML;
   }
 
   /**
    * ------------------------------------------------------------------------
    * Constants
    * ------------------------------------------------------------------------
    */
 
   var NAME$6 = 'tooltip';
   var VERSION$6 = '4.3.1';
   var DATA_KEY$6 = 'bs.tooltip';
   var EVENT_KEY$6 = "." + DATA_KEY$6;
   var JQUERY_NO_CONFLICT$6 = $.fn[NAME$6];
   var CLASS_PREFIX = 'bs-tooltip';
   var BSCLS_PREFIX_REGEX = new RegExp("(^|\\s)" + CLASS_PREFIX + "\\S+", 'g');
   var DISALLOWED_ATTRIBUTES = ['sanitize', 'whiteList', 'sanitizeFn'];
   var DefaultType$4 = {
     animation: 'boolean',
     template: 'string',
     title: '(string|element|function)',
     trigger: 'string',
     delay: '(number|object)',
     html: 'boolean',
     selector: '(string|boolean)',
     placement: '(string|function)',
     offset: '(number|string|function)',
     container: '(string|element|boolean)',
     fallbackPlacement: '(string|array)',
     boundary: '(string|element)',
     sanitize: 'boolean',
     sanitizeFn: '(null|function)',
     whiteList: 'object'
   };
   var AttachmentMap$1 = {
     AUTO: 'auto',
     TOP: 'top',
     RIGHT: 'right',
     BOTTOM: 'bottom',
     LEFT: 'left'
   };
   var Default$4 = {
     animation: true,
     template: '<div class="tooltip" role="tooltip">' + '<div class="arrow"></div>' + '<div class="tooltip-inner"></div></div>',
     trigger: 'hover focus',
     title: '',
     delay: 0,
     html: false,
     selector: false,
     placement: 'top',
     offset: 0,
     container: false,
     fallbackPlacement: 'flip',
     boundary: 'scrollParent',
     sanitize: true,
     sanitizeFn: null,
     whiteList: DefaultWhitelist
   };
   var HoverState = {
     SHOW: 'show',
     OUT: 'out'
   };
   var Event$6 = {
     HIDE: "hide" + EVENT_KEY$6,
     HIDDEN: "hidden" + EVENT_KEY$6,
     SHOW: "show" + EVENT_KEY$6,
     SHOWN: "shown" + EVENT_KEY$6,
     INSERTED: "inserted" + EVENT_KEY$6,
     CLICK: "click" + EVENT_KEY$6,
     FOCUSIN: "focusin" + EVENT_KEY$6,
     FOCUSOUT: "focusout" + EVENT_KEY$6,
     MOUSEENTER: "mouseenter" + EVENT_KEY$6,
     MOUSELEAVE: "mouseleave" + EVENT_KEY$6
   };
   var ClassName$6 = {
     FADE: 'fade',
     SHOW: 'show'
   };
   var Selector$6 = {
     TOOLTIP: '.tooltip',
     TOOLTIP_INNER: '.tooltip-inner',
     ARROW: '.arrow'
   };
   var Trigger = {
     HOVER: 'hover',
     FOCUS: 'focus',
     CLICK: 'click',
     MANUAL: 'manual'
     /**
      * ------------------------------------------------------------------------
      * Class Definition
      * ------------------------------------------------------------------------
      */
 
   };
 
   var Tooltip =
   /*#__PURE__*/
   function () {
     function Tooltip(element, config) {
       /**
        * Check for Popper dependency
        * Popper - https://popper.js.org
        */
       if (typeof Popper === 'undefined') {
         throw new TypeError('Bootstrap\'s tooltips require Popper.js (https://popper.js.org/)');
       } // private
 
 
       this._isEnabled = true;
       this._timeout = 0;
       this._hoverState = '';
       this._activeTrigger = {};
       this._popper = null; // Protected
 
       this.element = element;
       this.config = this._getConfig(config);
       this.tip = null;
 
       this._setListeners();
     } // Getters
 
 
     var _proto = Tooltip.prototype;
 
     // Public
     _proto.enable = function enable() {
       this._isEnabled = true;
     };
 
     _proto.disable = function disable() {
       this._isEnabled = false;
     };
 
     _proto.toggleEnabled = function toggleEnabled() {
       this._isEnabled = !this._isEnabled;
     };
 
     _proto.toggle = function toggle(event) {
       if (!this._isEnabled) {
         return;
       }
 
       if (event) {
         var dataKey = this.constructor.DATA_KEY;
         var context = $(event.currentTarget).data(dataKey);
 
         if (!context) {
           context = new this.constructor(event.currentTarget, this._getDelegateConfig());
           $(event.currentTarget).data(dataKey, context);
         }
 
         context._activeTrigger.click = !context._activeTrigger.click;
 
         if (context._isWithActiveTrigger()) {
           context._enter(null, context);
         } else {
           context._leave(null, context);
         }
       } else {
         if ($(this.getTipElement()).hasClass(ClassName$6.SHOW)) {
           this._leave(null, this);
 
           return;
         }
 
         this._enter(null, this);
       }
     };
 
     _proto.dispose = function dispose() {
       clearTimeout(this._timeout);
       $.removeData(this.element, this.constructor.DATA_KEY);
       $(this.element).off(this.constructor.EVENT_KEY);
       $(this.element).closest('.modal').off('hide.bs.modal');
 
       if (this.tip) {
         $(this.tip).remove();
       }
 
       this._isEnabled = null;
       this._timeout = null;
       this._hoverState = null;
       this._activeTrigger = null;
 
       if (this._popper !== null) {
         this._popper.destroy();
       }
 
       this._popper = null;
       this.element = null;
       this.config = null;
       this.tip = null;
     };
 
     _proto.show = function show() {
       var _this = this;
 
       if ($(this.element).css('display') === 'none') {
         throw new Error('Please use show on visible elements');
       }
 
       var showEvent = $.Event(this.constructor.Event.SHOW);
 
       if (this.isWithContent() && this._isEnabled) {
         $(this.element).trigger(showEvent);
         var shadowRoot = Util.findShadowRoot(this.element);
         var isInTheDom = $.contains(shadowRoot !== null ? shadowRoot : this.element.ownerDocument.documentElement, this.element);
 
         if (showEvent.isDefaultPrevented() || !isInTheDom) {
           return;
         }
 
         var tip = this.getTipElement();
         var tipId = Util.getUID(this.constructor.NAME);
         tip.setAttribute('id', tipId);
         this.element.setAttribute('aria-describedby', tipId);
         this.setContent();
 
         if (this.config.animation) {
           $(tip).addClass(ClassName$6.FADE);
         }
 
         var placement = typeof this.config.placement === 'function' ? this.config.placement.call(this, tip, this.element) : this.config.placement;
 
         var attachment = this._getAttachment(placement);
 
         this.addAttachmentClass(attachment);
 
         var container = this._getContainer();
 
         $(tip).data(this.constructor.DATA_KEY, this);
 
         if (!$.contains(this.element.ownerDocument.documentElement, this.tip)) {
           $(tip).appendTo(container);
         }
 
         $(this.element).trigger(this.constructor.Event.INSERTED);
         this._popper = new Popper(this.element, tip, {
           placement: attachment,
           modifiers: {
             offset: this._getOffset(),
             flip: {
               behavior: this.config.fallbackPlacement
             },
             arrow: {
               element: Selector$6.ARROW
             },
             preventOverflow: {
               boundariesElement: this.config.boundary
             }
           },
           onCreate: function onCreate(data) {
             if (data.originalPlacement !== data.placement) {
               _this._handlePopperPlacementChange(data);
             }
           },
           onUpdate: function onUpdate(data) {
             return _this._handlePopperPlacementChange(data);
           }
         });
         $(tip).addClass(ClassName$6.SHOW); // If this is a touch-enabled device we add extra
         // empty mouseover listeners to the body's immediate children;
         // only needed because of broken event delegation on iOS
         // https://www.quirksmode.org/blog/archives/2014/02/mouse_event_bub.html
 
         if ('ontouchstart' in document.documentElement) {
           $(document.body).children().on('mouseover', null, $.noop);
         }
 
         var complete = function complete() {
           if (_this.config.animation) {
             _this._fixTransition();
           }
 
           var prevHoverState = _this._hoverState;
           _this._hoverState = null;
           $(_this.element).trigger(_this.constructor.Event.SHOWN);
 
           if (prevHoverState === HoverState.OUT) {
             _this._leave(null, _this);
           }
         };
 
         if ($(this.tip).hasClass(ClassName$6.FADE)) {
           var transitionDuration = Util.getTransitionDurationFromElement(this.tip);
           $(this.tip).one(Util.TRANSITION_END, complete).emulateTransitionEnd(transitionDuration);
         } else {
           complete();
         }
       }
     };
 
     _proto.hide = function hide(callback) {
       var _this2 = this;
 
       var tip = this.getTipElement();
       var hideEvent = $.Event(this.constructor.Event.HIDE);
 
       var complete = function complete() {
         if (_this2._hoverState !== HoverState.SHOW && tip.parentNode) {
           tip.parentNode.removeChild(tip);
         }
 
         _this2._cleanTipClass();
 
         _this2.element.removeAttribute('aria-describedby');
 
         $(_this2.element).trigger(_this2.constructor.Event.HIDDEN);
 
         if (_this2._popper !== null) {
           _this2._popper.destroy();
         }
 
         if (callback) {
           callback();
         }
       };
 
       $(this.element).trigger(hideEvent);
 
       if (hideEvent.isDefaultPrevented()) {
         return;
       }
 
       $(tip).removeClass(ClassName$6.SHOW); // If this is a touch-enabled device we remove the extra
       // empty mouseover listeners we added for iOS support
 
       if ('ontouchstart' in document.documentElement) {
         $(document.body).children().off('mouseover', null, $.noop);
       }
 
       this._activeTrigger[Trigger.CLICK] = false;
       this._activeTrigger[Trigger.FOCUS] = false;
       this._activeTrigger[Trigger.HOVER] = false;
 
       if ($(this.tip).hasClass(ClassName$6.FADE)) {
         var transitionDuration = Util.getTransitionDurationFromElement(tip);
         $(tip).one(Util.TRANSITION_END, complete).emulateTransitionEnd(transitionDuration);
       } else {
         complete();
       }
 
       this._hoverState = '';
     };
 
     _proto.update = function update() {
       if (this._popper !== null) {
         this._popper.scheduleUpdate();
       }
     } // Protected
     ;
 
     _proto.isWithContent = function isWithContent() {
       return Boolean(this.getTitle());
     };
 
     _proto.addAttachmentClass = function addAttachmentClass(attachment) {
       $(this.getTipElement()).addClass(CLASS_PREFIX + "-" + attachment);
     };
 
     _proto.getTipElement = function getTipElement() {
       this.tip = this.tip || $(this.config.template)[0];
       return this.tip;
     };
 
     _proto.setContent = function setContent() {
       var tip = this.getTipElement();
       this.setElementContent($(tip.querySelectorAll(Selector$6.TOOLTIP_INNER)), this.getTitle());
       $(tip).removeClass(ClassName$6.FADE + " " + ClassName$6.SHOW);
     };
 
     _proto.setElementContent = function setElementContent($element, content) {
       if (typeof content === 'object' && (content.nodeType || content.jquery)) {
         // Content is a DOM node or a jQuery
         if (this.config.html) {
           if (!$(content).parent().is($element)) {
             $element.empty().append(content);
           }
         } else {
           $element.text($(content).text());
         }
 
         return;
       }
 
       if (this.config.html) {
         if (this.config.sanitize) {
           content = sanitizeHtml(content, this.config.whiteList, this.config.sanitizeFn);
         }
 
         $element.html(content);
       } else {
         $element.text(content);
       }
     };
 
     _proto.getTitle = function getTitle() {
       var title = this.element.getAttribute('data-original-title');
 
       if (!title) {
         title = typeof this.config.title === 'function' ? this.config.title.call(this.element) : this.config.title;
       }
 
       return title;
     } // Private
     ;
 
     _proto._getOffset = function _getOffset() {
       var _this3 = this;
 
       var offset = {};
 
       if (typeof this.config.offset === 'function') {
         offset.fn = function (data) {
           data.offsets = _objectSpread({}, data.offsets, _this3.config.offset(data.offsets, _this3.element) || {});
           return data;
         };
       } else {
         offset.offset = this.config.offset;
       }
 
       return offset;
     };
 
     _proto._getContainer = function _getContainer() {
       if (this.config.container === false) {
         return document.body;
       }
 
       if (Util.isElement(this.config.container)) {
         return $(this.config.container);
       }
 
       return $(document).find(this.config.container);
     };
 
     _proto._getAttachment = function _getAttachment(placement) {
       return AttachmentMap$1[placement.toUpperCase()];
     };
 
     _proto._setListeners = function _setListeners() {
       var _this4 = this;
 
       var triggers = this.config.trigger.split(' ');
       triggers.forEach(function (trigger) {
         if (trigger === 'click') {
           $(_this4.element).on(_this4.constructor.Event.CLICK, _this4.config.selector, function (event) {
             return _this4.toggle(event);
           });
         } else if (trigger !== Trigger.MANUAL) {
           var eventIn = trigger === Trigger.HOVER ? _this4.constructor.Event.MOUSEENTER : _this4.constructor.Event.FOCUSIN;
           var eventOut = trigger === Trigger.HOVER ? _this4.constructor.Event.MOUSELEAVE : _this4.constructor.Event.FOCUSOUT;
           $(_this4.element).on(eventIn, _this4.config.selector, function (event) {
             return _this4._enter(event);
           }).on(eventOut, _this4.config.selector, function (event) {
             return _this4._leave(event);
           });
         }
       });
       $(this.element).closest('.modal').on('hide.bs.modal', function () {
         if (_this4.element) {
           _this4.hide();
         }
       });
 
       if (this.config.selector) {
         this.config = _objectSpread({}, this.config, {
           trigger: 'manual',
           selector: ''
         });
       } else {
         this._fixTitle();
       }
     };
 
     _proto._fixTitle = function _fixTitle() {
       var titleType = typeof this.element.getAttribute('data-original-title');
 
       if (this.element.getAttribute('title') || titleType !== 'string') {
         this.element.setAttribute('data-original-title', this.element.getAttribute('title') || '');
         this.element.setAttribute('title', '');
       }
     };
 
     _proto._enter = function _enter(event, context) {
       var dataKey = this.constructor.DATA_KEY;
       context = context || $(event.currentTarget).data(dataKey);
 
       if (!context) {
         context = new this.constructor(event.currentTarget, this._getDelegateConfig());
         $(event.currentTarget).data(dataKey, context);
       }
 
       if (event) {
         context._activeTrigger[event.type === 'focusin' ? Trigger.FOCUS : Trigger.HOVER] = true;
       }
 
       if ($(context.getTipElement()).hasClass(ClassName$6.SHOW) || context._hoverState === HoverState.SHOW) {
         context._hoverState = HoverState.SHOW;
         return;
       }
 
       clearTimeout(context._timeout);
       context._hoverState = HoverState.SHOW;
 
       if (!context.config.delay || !context.config.delay.show) {
         context.show();
         return;
       }
 
       context._timeout = setTimeout(function () {
         if (context._hoverState === HoverState.SHOW) {
           context.show();
         }
       }, context.config.delay.show);
     };
 
     _proto._leave = function _leave(event, context) {
       var dataKey = this.constructor.DATA_KEY;
       context = context || $(event.currentTarget).data(dataKey);
 
       if (!context) {
         context = new this.constructor(event.currentTarget, this._getDelegateConfig());
         $(event.currentTarget).data(dataKey, context);
       }
 
       if (event) {
         context._activeTrigger[event.type === 'focusout' ? Trigger.FOCUS : Trigger.HOVER] = false;
       }
 
       if (context._isWithActiveTrigger()) {
         return;
       }
 
       clearTimeout(context._timeout);
       context._hoverState = HoverState.OUT;
 
       if (!context.config.delay || !context.config.delay.hide) {
         context.hide();
         return;
       }
 
       context._timeout = setTimeout(function () {
         if (context._hoverState === HoverState.OUT) {
           context.hide();
         }
       }, context.config.delay.hide);
     };
 
     _proto._isWithActiveTrigger = function _isWithActiveTrigger() {
       for (var trigger in this._activeTrigger) {
         if (this._activeTrigger[trigger]) {
           return true;
         }
       }
 
       return false;
     };
 
     _proto._getConfig = function _getConfig(config) {
       var dataAttributes = $(this.element).data();
       Object.keys(dataAttributes).forEach(function (dataAttr) {
         if (DISALLOWED_ATTRIBUTES.indexOf(dataAttr) !== -1) {
           delete dataAttributes[dataAttr];
         }
       });
       config = _objectSpread({}, this.constructor.Default, dataAttributes, typeof config === 'object' && config ? config : {});
 
       if (typeof config.delay === 'number') {
         config.delay = {
           show: config.delay,
           hide: config.delay
         };
       }
 
       if (typeof config.title === 'number') {
         config.title = config.title.toString();
       }
 
       if (typeof config.content === 'number') {
         config.content = config.content.toString();
       }
 
       Util.typeCheckConfig(NAME$6, config, this.constructor.DefaultType);
 
       if (config.sanitize) {
         config.template = sanitizeHtml(config.template, config.whiteList, config.sanitizeFn);
       }
 
       return config;
     };
 
     _proto._getDelegateConfig = function _getDelegateConfig() {
       var config = {};
 
       if (this.config) {
         for (var key in this.config) {
           if (this.constructor.Default[key] !== this.config[key]) {
             config[key] = this.config[key];
           }
         }
       }
 
       return config;
     };
 
     _proto._cleanTipClass = function _cleanTipClass() {
       var $tip = $(this.getTipElement());
       var tabClass = $tip.attr('class').match(BSCLS_PREFIX_REGEX);
 
       if (tabClass !== null && tabClass.length) {
         $tip.removeClass(tabClass.join(''));
       }
     };
 
     _proto._handlePopperPlacementChange = function _handlePopperPlacementChange(popperData) {
       var popperInstance = popperData.instance;
       this.tip = popperInstance.popper;
 
       this._cleanTipClass();
 
       this.addAttachmentClass(this._getAttachment(popperData.placement));
     };
 
     _proto._fixTransition = function _fixTransition() {
       var tip = this.getTipElement();
       var initConfigAnimation = this.config.animation;
 
       if (tip.getAttribute('x-placement') !== null) {
         return;
       }
 
       $(tip).removeClass(ClassName$6.FADE);
       this.config.animation = false;
       this.hide();
       this.show();
       this.config.animation = initConfigAnimation;
     } // Static
     ;
 
     Tooltip._jQueryInterface = function _jQueryInterface(config) {
       return this.each(function () {
         var data = $(this).data(DATA_KEY$6);
 
         var _config = typeof config === 'object' && config;
 
         if (!data && /dispose|hide/.test(config)) {
           return;
         }
 
         if (!data) {
           data = new Tooltip(this, _config);
           $(this).data(DATA_KEY$6, data);
         }
 
         if (typeof config === 'string') {
           if (typeof data[config] === 'undefined') {
             throw new TypeError("No method named \"" + config + "\"");
           }
 
           data[config]();
         }
       });
     };
 
     _createClass(Tooltip, null, [{
       key: "VERSION",
       get: function get() {
         return VERSION$6;
       }
     }, {
       key: "Default",
       get: function get() {
         return Default$4;
       }
     }, {
       key: "NAME",
       get: function get() {
         return NAME$6;
       }
     }, {
       key: "DATA_KEY",
       get: function get() {
         return DATA_KEY$6;
       }
     }, {
       key: "Event",
       get: function get() {
         return Event$6;
       }
     }, {
       key: "EVENT_KEY",
       get: function get() {
         return EVENT_KEY$6;
       }
     }, {
       key: "DefaultType",
       get: function get() {
         return DefaultType$4;
       }
     }]);
 
     return Tooltip;
   }();
   /**
    * ------------------------------------------------------------------------
    * jQuery
    * ------------------------------------------------------------------------
    */
 
 
   $.fn[NAME$6] = Tooltip._jQueryInterface;
   $.fn[NAME$6].Constructor = Tooltip;
 
   $.fn[NAME$6].noConflict = function () {
     $.fn[NAME$6] = JQUERY_NO_CONFLICT$6;
     return Tooltip._jQueryInterface;
   };
 
   /**
    * ------------------------------------------------------------------------
    * Constants
    * ------------------------------------------------------------------------
    */
 
   var NAME$7 = 'popover';
   var VERSION$7 = '4.3.1';
   var DATA_KEY$7 = 'bs.popover';
   var EVENT_KEY$7 = "." + DATA_KEY$7;
   var JQUERY_NO_CONFLICT$7 = $.fn[NAME$7];
   var CLASS_PREFIX$1 = 'bs-popover';
   var BSCLS_PREFIX_REGEX$1 = new RegExp("(^|\\s)" + CLASS_PREFIX$1 + "\\S+", 'g');
 
   var Default$5 = _objectSpread({}, Tooltip.Default, {
     placement: 'right',
     trigger: 'click',
     content: '',
     template: '<div class="popover" role="tooltip">' + '<div class="arrow"></div>' + '<h3 class="popover-header"></h3>' + '<div class="popover-body"></div></div>'
   });
 
   var DefaultType$5 = _objectSpread({}, Tooltip.DefaultType, {
     content: '(string|element|function)'
   });
 
   var ClassName$7 = {
     FADE: 'fade',
     SHOW: 'show'
   };
   var Selector$7 = {
     TITLE: '.popover-header',
     CONTENT: '.popover-body'
   };
   var Event$7 = {
     HIDE: "hide" + EVENT_KEY$7,
     HIDDEN: "hidden" + EVENT_KEY$7,
     SHOW: "show" + EVENT_KEY$7,
     SHOWN: "shown" + EVENT_KEY$7,
     INSERTED: "inserted" + EVENT_KEY$7,
     CLICK: "click" + EVENT_KEY$7,
     FOCUSIN: "focusin" + EVENT_KEY$7,
     FOCUSOUT: "focusout" + EVENT_KEY$7,
     MOUSEENTER: "mouseenter" + EVENT_KEY$7,
     MOUSELEAVE: "mouseleave" + EVENT_KEY$7
     /**
      * ------------------------------------------------------------------------
      * Class Definition
      * ------------------------------------------------------------------------
      */
 
   };
 
   var Popover =
   /*#__PURE__*/
   function (_Tooltip) {
     _inheritsLoose(Popover, _Tooltip);
 
     function Popover() {
       return _Tooltip.apply(this, arguments) || this;
     }
 
     var _proto = Popover.prototype;
 
     // Overrides
     _proto.isWithContent = function isWithContent() {
       return this.getTitle() || this._getContent();
     };
 
     _proto.addAttachmentClass = function addAttachmentClass(attachment) {
       $(this.getTipElement()).addClass(CLASS_PREFIX$1 + "-" + attachment);
     };
 
     _proto.getTipElement = function getTipElement() {
       this.tip = this.tip || $(this.config.template)[0];
       return this.tip;
     };
 
     _proto.setContent = function setContent() {
       var $tip = $(this.getTipElement()); // We use append for html objects to maintain js events
 
       this.setElementContent($tip.find(Selector$7.TITLE), this.getTitle());
 
       var content = this._getContent();
 
       if (typeof content === 'function') {
         content = content.call(this.element);
       }
 
       this.setElementContent($tip.find(Selector$7.CONTENT), content);
       $tip.removeClass(ClassName$7.FADE + " " + ClassName$7.SHOW);
     } // Private
     ;
 
     _proto._getContent = function _getContent() {
       return this.element.getAttribute('data-content') || this.config.content;
     };
 
     _proto._cleanTipClass = function _cleanTipClass() {
       var $tip = $(this.getTipElement());
       var tabClass = $tip.attr('class').match(BSCLS_PREFIX_REGEX$1);
 
       if (tabClass !== null && tabClass.length > 0) {
         $tip.removeClass(tabClass.join(''));
       }
     } // Static
     ;
 
     Popover._jQueryInterface = function _jQueryInterface(config) {
       return this.each(function () {
         var data = $(this).data(DATA_KEY$7);
 
         var _config = typeof config === 'object' ? config : null;
 
         if (!data && /dispose|hide/.test(config)) {
           return;
         }
 
         if (!data) {
           data = new Popover(this, _config);
           $(this).data(DATA_KEY$7, data);
         }
 
         if (typeof config === 'string') {
           if (typeof data[config] === 'undefined') {
             throw new TypeError("No method named \"" + config + "\"");
           }
 
           data[config]();
         }
       });
     };
 
     _createClass(Popover, null, [{
       key: "VERSION",
       // Getters
       get: function get() {
         return VERSION$7;
       }
     }, {
       key: "Default",
       get: function get() {
         return Default$5;
       }
     }, {
       key: "NAME",
       get: function get() {
         return NAME$7;
       }
     }, {
       key: "DATA_KEY",
       get: function get() {
         return DATA_KEY$7;
       }
     }, {
       key: "Event",
       get: function get() {
         return Event$7;
       }
     }, {
       key: "EVENT_KEY",
       get: function get() {
         return EVENT_KEY$7;
       }
     }, {
       key: "DefaultType",
       get: function get() {
         return DefaultType$5;
       }
     }]);
 
     return Popover;
   }(Tooltip);
   /**
    * ------------------------------------------------------------------------
    * jQuery
    * ------------------------------------------------------------------------
    */
 
 
   $.fn[NAME$7] = Popover._jQueryInterface;
   $.fn[NAME$7].Constructor = Popover;
 
   $.fn[NAME$7].noConflict = function () {
     $.fn[NAME$7] = JQUERY_NO_CONFLICT$7;
     return Popover._jQueryInterface;
   };
 
   /**
    * ------------------------------------------------------------------------
    * Constants
    * ------------------------------------------------------------------------
    */
 
   var NAME$8 = 'scrollspy';
   var VERSION$8 = '4.3.1';
   var DATA_KEY$8 = 'bs.scrollspy';
   var EVENT_KEY$8 = "." + DATA_KEY$8;
   var DATA_API_KEY$6 = '.data-api';
   var JQUERY_NO_CONFLICT$8 = $.fn[NAME$8];
   var Default$6 = {
     offset: 10,
     method: 'auto',
     target: ''
   };
   var DefaultType$6 = {
     offset: 'number',
     method: 'string',
     target: '(string|element)'
   };
   var Event$8 = {
     ACTIVATE: "activate" + EVENT_KEY$8,
     SCROLL: "scroll" + EVENT_KEY$8,
     LOAD_DATA_API: "load" + EVENT_KEY$8 + DATA_API_KEY$6
   };
   var ClassName$8 = {
     DROPDOWN_ITEM: 'dropdown-item',
     DROPDOWN_MENU: 'dropdown-menu',
     ACTIVE: 'active'
   };
   var Selector$8 = {
     DATA_SPY: '[data-spy="scroll"]',
     ACTIVE: '.active',
     NAV_LIST_GROUP: '.nav, .list-group',
     NAV_LINKS: '.nav-link',
     NAV_ITEMS: '.nav-item',
     LIST_ITEMS: '.list-group-item',
     DROPDOWN: '.dropdown',
     DROPDOWN_ITEMS: '.dropdown-item',
     DROPDOWN_TOGGLE: '.dropdown-toggle'
   };
   var OffsetMethod = {
     OFFSET: 'offset',
     POSITION: 'position'
     /**
      * ------------------------------------------------------------------------
      * Class Definition
      * ------------------------------------------------------------------------
      */
 
   };
 
   var ScrollSpy =
   /*#__PURE__*/
   function () {
     function ScrollSpy(element, config) {
       var _this = this;
 
       this._element = element;
       this._scrollElement = element.tagName === 'BODY' ? window : element;
       this._config = this._getConfig(config);
       this._selector = this._config.target + " " + Selector$8.NAV_LINKS + "," + (this._config.target + " " + Selector$8.LIST_ITEMS + ",") + (this._config.target + " " + Selector$8.DROPDOWN_ITEMS);
       this._offsets = [];
       this._targets = [];
       this._activeTarget = null;
       this._scrollHeight = 0;
       $(this._scrollElement).on(Event$8.SCROLL, function (event) {
         return _this._process(event);
       });
       this.refresh();
 
       this._process();
     } // Getters
 
 
     var _proto = ScrollSpy.prototype;
 
     // Public
     _proto.refresh = function refresh() {
       var _this2 = this;
 
       var autoMethod = this._scrollElement === this._scrollElement.window ? OffsetMethod.OFFSET : OffsetMethod.POSITION;
       var offsetMethod = this._config.method === 'auto' ? autoMethod : this._config.method;
       var offsetBase = offsetMethod === OffsetMethod.POSITION ? this._getScrollTop() : 0;
       this._offsets = [];
       this._targets = [];
       this._scrollHeight = this._getScrollHeight();
       var targets = [].slice.call(document.querySelectorAll(this._selector));
       targets.map(function (element) {
         var target;
         var targetSelector = Util.getSelectorFromElement(element);
 
         if (targetSelector) {
           target = document.querySelector(targetSelector);
         }
 
         if (target) {
           var targetBCR = target.getBoundingClientRect();
 
           if (targetBCR.width || targetBCR.height) {
             // TODO (fat): remove sketch reliance on jQuery position/offset
             return [$(target)[offsetMethod]().top + offsetBase, targetSelector];
           }
         }
 
         return null;
       }).filter(function (item) {
         return item;
       }).sort(function (a, b) {
         return a[0] - b[0];
       }).forEach(function (item) {
         _this2._offsets.push(item[0]);
 
         _this2._targets.push(item[1]);
       });
     };
 
     _proto.dispose = function dispose() {
       $.removeData(this._element, DATA_KEY$8);
       $(this._scrollElement).off(EVENT_KEY$8);
       this._element = null;
       this._scrollElement = null;
       this._config = null;
       this._selector = null;
       this._offsets = null;
       this._targets = null;
       this._activeTarget = null;
       this._scrollHeight = null;
     } // Private
     ;
 
     _proto._getConfig = function _getConfig(config) {
       config = _objectSpread({}, Default$6, typeof config === 'object' && config ? config : {});
 
       if (typeof config.target !== 'string') {
         var id = $(config.target).attr('id');
 
         if (!id) {
           id = Util.getUID(NAME$8);
           $(config.target).attr('id', id);
         }
 
         config.target = "#" + id;
       }
 
       Util.typeCheckConfig(NAME$8, config, DefaultType$6);
       return config;
     };
 
     _proto._getScrollTop = function _getScrollTop() {
       return this._scrollElement === window ? this._scrollElement.pageYOffset : this._scrollElement.scrollTop;
     };
 
     _proto._getScrollHeight = function _getScrollHeight() {
       return this._scrollElement.scrollHeight || Math.max(document.body.scrollHeight, document.documentElement.scrollHeight);
     };
 
     _proto._getOffsetHeight = function _getOffsetHeight() {
       return this._scrollElement === window ? window.innerHeight : this._scrollElement.getBoundingClientRect().height;
     };
 
     _proto._process = function _process() {
       var scrollTop = this._getScrollTop() + this._config.offset;
 
       var scrollHeight = this._getScrollHeight();
 
       var maxScroll = this._config.offset + scrollHeight - this._getOffsetHeight();
 
       if (this._scrollHeight !== scrollHeight) {
         this.refresh();
       }
 
       if (scrollTop >= maxScroll) {
         var target = this._targets[this._targets.length - 1];
 
         if (this._activeTarget !== target) {
           this._activate(target);
         }
 
         return;
       }
 
       if (this._activeTarget && scrollTop < this._offsets[0] && this._offsets[0] > 0) {
         this._activeTarget = null;
 
         this._clear();
 
         return;
       }
 
       var offsetLength = this._offsets.length;
 
       for (var i = offsetLength; i--;) {
         var isActiveTarget = this._activeTarget !== this._targets[i] && scrollTop >= this._offsets[i] && (typeof this._offsets[i + 1] === 'undefined' || scrollTop < this._offsets[i + 1]);
 
         if (isActiveTarget) {
           this._activate(this._targets[i]);
         }
       }
     };
 
     _proto._activate = function _activate(target) {
       this._activeTarget = target;
 
       this._clear();
 
       var queries = this._selector.split(',').map(function (selector) {
         return selector + "[data-target=\"" + target + "\"]," + selector + "[href=\"" + target + "\"]";
       });
 
       var $link = $([].slice.call(document.querySelectorAll(queries.join(','))));
 
       if ($link.hasClass(ClassName$8.DROPDOWN_ITEM)) {
         $link.closest(Selector$8.DROPDOWN).find(Selector$8.DROPDOWN_TOGGLE).addClass(ClassName$8.ACTIVE);
         $link.addClass(ClassName$8.ACTIVE);
       } else {
         // Set triggered link as active
         $link.addClass(ClassName$8.ACTIVE); // Set triggered links parents as active
         // With both <ul> and <nav> markup a parent is the previous sibling of any nav ancestor
 
         $link.parents(Selector$8.NAV_LIST_GROUP).prev(Selector$8.NAV_LINKS + ", " + Selector$8.LIST_ITEMS).addClass(ClassName$8.ACTIVE); // Handle special case when .nav-link is inside .nav-item
 
         $link.parents(Selector$8.NAV_LIST_GROUP).prev(Selector$8.NAV_ITEMS).children(Selector$8.NAV_LINKS).addClass(ClassName$8.ACTIVE);
       }
 
       $(this._scrollElement).trigger(Event$8.ACTIVATE, {
         relatedTarget: target
       });
     };
 
     _proto._clear = function _clear() {
       [].slice.call(document.querySelectorAll(this._selector)).filter(function (node) {
         return node.classList.contains(ClassName$8.ACTIVE);
       }).forEach(function (node) {
         return node.classList.remove(ClassName$8.ACTIVE);
       });
     } // Static
     ;
 
     ScrollSpy._jQueryInterface = function _jQueryInterface(config) {
       return this.each(function () {
         var data = $(this).data(DATA_KEY$8);
 
         var _config = typeof config === 'object' && config;
 
         if (!data) {
           data = new ScrollSpy(this, _config);
           $(this).data(DATA_KEY$8, data);
         }
 
         if (typeof config === 'string') {
           if (typeof data[config] === 'undefined') {
             throw new TypeError("No method named \"" + config + "\"");
           }
 
           data[config]();
         }
       });
     };
 
     _createClass(ScrollSpy, null, [{
       key: "VERSION",
       get: function get() {
         return VERSION$8;
       }
     }, {
       key: "Default",
       get: function get() {
         return Default$6;
       }
     }]);
 
     return ScrollSpy;
   }();
   /**
    * ------------------------------------------------------------------------
    * Data Api implementation
    * ------------------------------------------------------------------------
    */
 
 
   $(window).on(Event$8.LOAD_DATA_API, function () {
     var scrollSpys = [].slice.call(document.querySelectorAll(Selector$8.DATA_SPY));
     var scrollSpysLength = scrollSpys.length;
 
     for (var i = scrollSpysLength; i--;) {
       var $spy = $(scrollSpys[i]);
 
       ScrollSpy._jQueryInterface.call($spy, $spy.data());
     }
   });
   /**
    * ------------------------------------------------------------------------
    * jQuery
    * ------------------------------------------------------------------------
    */
 
   $.fn[NAME$8] = ScrollSpy._jQueryInterface;
   $.fn[NAME$8].Constructor = ScrollSpy;
 
   $.fn[NAME$8].noConflict = function () {
     $.fn[NAME$8] = JQUERY_NO_CONFLICT$8;
     return ScrollSpy._jQueryInterface;
   };
 
   /**
    * ------------------------------------------------------------------------
    * Constants
    * ------------------------------------------------------------------------
    */
 
   var NAME$9 = 'tab';
   var VERSION$9 = '4.3.1';
   var DATA_KEY$9 = 'bs.tab';
   var EVENT_KEY$9 = "." + DATA_KEY$9;
   var DATA_API_KEY$7 = '.data-api';
   var JQUERY_NO_CONFLICT$9 = $.fn[NAME$9];
   var Event$9 = {
     HIDE: "hide" + EVENT_KEY$9,
     HIDDEN: "hidden" + EVENT_KEY$9,
     SHOW: "show" + EVENT_KEY$9,
     SHOWN: "shown" + EVENT_KEY$9,
     CLICK_DATA_API: "click" + EVENT_KEY$9 + DATA_API_KEY$7
   };
   var ClassName$9 = {
     DROPDOWN_MENU: 'dropdown-menu',
     ACTIVE: 'active',
     DISABLED: 'disabled',
     FADE: 'fade',
     SHOW: 'show'
   };
   var Selector$9 = {
     DROPDOWN: '.dropdown',
     NAV_LIST_GROUP: '.nav, .list-group',
     ACTIVE: '.active',
     ACTIVE_UL: '> li > .active',
     DATA_TOGGLE: '[data-toggle="tab"], [data-toggle="pill"], [data-toggle="list"]',
     DROPDOWN_TOGGLE: '.dropdown-toggle',
     DROPDOWN_ACTIVE_CHILD: '> .dropdown-menu .active'
     /**
      * ------------------------------------------------------------------------
      * Class Definition
      * ------------------------------------------------------------------------
      */
 
   };
 
   var Tab =
   /*#__PURE__*/
   function () {
     function Tab(element) {
       this._element = element;
     } // Getters
 
 
     var _proto = Tab.prototype;
 
     // Public
     _proto.show = function show() {
       var _this = this;
 
       if (this._element.parentNode && this._element.parentNode.nodeType === Node.ELEMENT_NODE && $(this._element).hasClass(ClassName$9.ACTIVE) || $(this._element).hasClass(ClassName$9.DISABLED)) {
         return;
       }
 
       var target;
       var previous;
       var listElement = $(this._element).closest(Selector$9.NAV_LIST_GROUP)[0];
       var selector = Util.getSelectorFromElement(this._element);
 
       if (listElement) {
         var itemSelector = listElement.nodeName === 'UL' || listElement.nodeName === 'OL' ? Selector$9.ACTIVE_UL : Selector$9.ACTIVE;
         previous = $.makeArray($(listElement).find(itemSelector));
         previous = previous[previous.length - 1];
       }
 
       var hideEvent = $.Event(Event$9.HIDE, {
         relatedTarget: this._element
       });
       var showEvent = $.Event(Event$9.SHOW, {
         relatedTarget: previous
       });
 
       if (previous) {
         $(previous).trigger(hideEvent);
       }
 
       $(this._element).trigger(showEvent);
 
       if (showEvent.isDefaultPrevented() || hideEvent.isDefaultPrevented()) {
         return;
       }
 
       if (selector) {
         target = document.querySelector(selector);
       }
 
       this._activate(this._element, listElement);
 
       var complete = function complete() {
         var hiddenEvent = $.Event(Event$9.HIDDEN, {
           relatedTarget: _this._element
         });
         var shownEvent = $.Event(Event$9.SHOWN, {
           relatedTarget: previous
         });
         $(previous).trigger(hiddenEvent);
         $(_this._element).trigger(shownEvent);
       };
 
       if (target) {
         this._activate(target, target.parentNode, complete);
       } else {
         complete();
       }
     };
 
     _proto.dispose = function dispose() {
       $.removeData(this._element, DATA_KEY$9);
       this._element = null;
     } // Private
     ;
 
     _proto._activate = function _activate(element, container, callback) {
       var _this2 = this;
 
       var activeElements = container && (container.nodeName === 'UL' || container.nodeName === 'OL') ? $(container).find(Selector$9.ACTIVE_UL) : $(container).children(Selector$9.ACTIVE);
       var active = activeElements[0];
       var isTransitioning = callback && active && $(active).hasClass(ClassName$9.FADE);
 
       var complete = function complete() {
         return _this2._transitionComplete(element, active, callback);
       };
 
       if (active && isTransitioning) {
         var transitionDuration = Util.getTransitionDurationFromElement(active);
         $(active).removeClass(ClassName$9.SHOW).one(Util.TRANSITION_END, complete).emulateTransitionEnd(transitionDuration);
       } else {
         complete();
       }
     };
 
     _proto._transitionComplete = function _transitionComplete(element, active, callback) {
       if (active) {
         $(active).removeClass(ClassName$9.ACTIVE);
         var dropdownChild = $(active.parentNode).find(Selector$9.DROPDOWN_ACTIVE_CHILD)[0];
 
         if (dropdownChild) {
           $(dropdownChild).removeClass(ClassName$9.ACTIVE);
         }
 
         if (active.getAttribute('role') === 'tab') {
           active.setAttribute('aria-selected', false);
         }
       }
 
       $(element).addClass(ClassName$9.ACTIVE);
 
       if (element.getAttribute('role') === 'tab') {
         element.setAttribute('aria-selected', true);
       }
 
       Util.reflow(element);
 
       if (element.classList.contains(ClassName$9.FADE)) {
         element.classList.add(ClassName$9.SHOW);
       }
 
       if (element.parentNode && $(element.parentNode).hasClass(ClassName$9.DROPDOWN_MENU)) {
         var dropdownElement = $(element).closest(Selector$9.DROPDOWN)[0];
 
         if (dropdownElement) {
           var dropdownToggleList = [].slice.call(dropdownElement.querySelectorAll(Selector$9.DROPDOWN_TOGGLE));
           $(dropdownToggleList).addClass(ClassName$9.ACTIVE);
         }
 
         element.setAttribute('aria-expanded', true);
       }
 
       if (callback) {
         callback();
       }
     } // Static
     ;
 
     Tab._jQueryInterface = function _jQueryInterface(config) {
       return this.each(function () {
         var $this = $(this);
         var data = $this.data(DATA_KEY$9);
 
         if (!data) {
           data = new Tab(this);
           $this.data(DATA_KEY$9, data);
         }
 
         if (typeof config === 'string') {
           if (typeof data[config] === 'undefined') {
             throw new TypeError("No method named \"" + config + "\"");
           }
 
           data[config]();
         }
       });
     };
 
     _createClass(Tab, null, [{
       key: "VERSION",
       get: function get() {
         return VERSION$9;
       }
     }]);
 
     return Tab;
   }();
   /**
    * ------------------------------------------------------------------------
    * Data Api implementation
    * ------------------------------------------------------------------------
    */
 
 
   $(document).on(Event$9.CLICK_DATA_API, Selector$9.DATA_TOGGLE, function (event) {
     event.preventDefault();
 
     Tab._jQueryInterface.call($(this), 'show');
   });
   /**
    * ------------------------------------------------------------------------
    * jQuery
    * ------------------------------------------------------------------------
    */
 
   $.fn[NAME$9] = Tab._jQueryInterface;
   $.fn[NAME$9].Constructor = Tab;
 
   $.fn[NAME$9].noConflict = function () {
     $.fn[NAME$9] = JQUERY_NO_CONFLICT$9;
     return Tab._jQueryInterface;
   };
 
   /**
    * ------------------------------------------------------------------------
    * Constants
    * ------------------------------------------------------------------------
    */
 
   var NAME$a = 'toast';
   var VERSION$a = '4.3.1';
   var DATA_KEY$a = 'bs.toast';
   var EVENT_KEY$a = "." + DATA_KEY$a;
   var JQUERY_NO_CONFLICT$a = $.fn[NAME$a];
   var Event$a = {
     CLICK_DISMISS: "click.dismiss" + EVENT_KEY$a,
     HIDE: "hide" + EVENT_KEY$a,
     HIDDEN: "hidden" + EVENT_KEY$a,
     SHOW: "show" + EVENT_KEY$a,
     SHOWN: "shown" + EVENT_KEY$a
   };
   var ClassName$a = {
     FADE: 'fade',
     HIDE: 'hide',
     SHOW: 'show',
     SHOWING: 'showing'
   };
   var DefaultType$7 = {
     animation: 'boolean',
     autohide: 'boolean',
     delay: 'number'
   };
   var Default$7 = {
     animation: true,
     autohide: true,
     delay: 500
   };
   var Selector$a = {
     DATA_DISMISS: '[data-dismiss="toast"]'
     /**
      * ------------------------------------------------------------------------
      * Class Definition
      * ------------------------------------------------------------------------
      */
 
   };
 
   var Toast =
   /*#__PURE__*/
   function () {
     function Toast(element, config) {
       this._element = element;
       this._config = this._getConfig(config);
       this._timeout = null;
 
       this._setListeners();
     } // Getters
 
 
     var _proto = Toast.prototype;
 
     // Public
     _proto.show = function show() {
       var _this = this;
 
       $(this._element).trigger(Event$a.SHOW);
 
       if (this._config.animation) {
         this._element.classList.add(ClassName$a.FADE);
       }
 
       var complete = function complete() {
         _this._element.classList.remove(ClassName$a.SHOWING);
 
         _this._element.classList.add(ClassName$a.SHOW);
 
         $(_this._element).trigger(Event$a.SHOWN);
 
         if (_this._config.autohide) {
           _this.hide();
         }
       };
 
       this._element.classList.remove(ClassName$a.HIDE);
 
       this._element.classList.add(ClassName$a.SHOWING);
 
       if (this._config.animation) {
         var transitionDuration = Util.getTransitionDurationFromElement(this._element);
         $(this._element).one(Util.TRANSITION_END, complete).emulateTransitionEnd(transitionDuration);
       } else {
         complete();
       }
     };
 
     _proto.hide = function hide(withoutTimeout) {
       var _this2 = this;
 
       if (!this._element.classList.contains(ClassName$a.SHOW)) {
         return;
       }
 
       $(this._element).trigger(Event$a.HIDE);
 
       if (withoutTimeout) {
         this._close();
       } else {
         this._timeout = setTimeout(function () {
           _this2._close();
         }, this._config.delay);
       }
     };
 
     _proto.dispose = function dispose() {
       clearTimeout(this._timeout);
       this._timeout = null;
 
       if (this._element.classList.contains(ClassName$a.SHOW)) {
         this._element.classList.remove(ClassName$a.SHOW);
       }
 
       $(this._element).off(Event$a.CLICK_DISMISS);
       $.removeData(this._element, DATA_KEY$a);
       this._element = null;
       this._config = null;
     } // Private
     ;
 
     _proto._getConfig = function _getConfig(config) {
       config = _objectSpread({}, Default$7, $(this._element).data(), typeof config === 'object' && config ? config : {});
       Util.typeCheckConfig(NAME$a, config, this.constructor.DefaultType);
       return config;
     };
 
     _proto._setListeners = function _setListeners() {
       var _this3 = this;
 
       $(this._element).on(Event$a.CLICK_DISMISS, Selector$a.DATA_DISMISS, function () {
         return _this3.hide(true);
       });
     };
 
     _proto._close = function _close() {
       var _this4 = this;
 
       var complete = function complete() {
         _this4._element.classList.add(ClassName$a.HIDE);
 
         $(_this4._element).trigger(Event$a.HIDDEN);
       };
 
       this._element.classList.remove(ClassName$a.SHOW);
 
       if (this._config.animation) {
         var transitionDuration = Util.getTransitionDurationFromElement(this._element);
         $(this._element).one(Util.TRANSITION_END, complete).emulateTransitionEnd(transitionDuration);
       } else {
         complete();
       }
     } // Static
     ;
 
     Toast._jQueryInterface = function _jQueryInterface(config) {
       return this.each(function () {
         var $element = $(this);
         var data = $element.data(DATA_KEY$a);
 
         var _config = typeof config === 'object' && config;
 
         if (!data) {
           data = new Toast(this, _config);
           $element.data(DATA_KEY$a, data);
         }
 
         if (typeof config === 'string') {
           if (typeof data[config] === 'undefined') {
             throw new TypeError("No method named \"" + config + "\"");
           }
 
           data[config](this);
         }
       });
     };
 
     _createClass(Toast, null, [{
       key: "VERSION",
       get: function get() {
         return VERSION$a;
       }
     }, {
       key: "DefaultType",
       get: function get() {
         return DefaultType$7;
       }
     }, {
       key: "Default",
       get: function get() {
         return Default$7;
       }
     }]);
 
     return Toast;
   }();
   /**
    * ------------------------------------------------------------------------
    * jQuery
    * ------------------------------------------------------------------------
    */
 
 
   $.fn[NAME$a] = Toast._jQueryInterface;
   $.fn[NAME$a].Constructor = Toast;
 
   $.fn[NAME$a].noConflict = function () {
     $.fn[NAME$a] = JQUERY_NO_CONFLICT$a;
     return Toast._jQueryInterface;
   };
 
   /**
    * --------------------------------------------------------------------------
    * Bootstrap (v4.3.1): index.js
    * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
    * --------------------------------------------------------------------------
    */
 
   (function () {
     if (typeof $ === 'undefined') {
       throw new TypeError('Bootstrap\'s JavaScript requires jQuery. jQuery must be included before Bootstrap\'s JavaScript.');
     }
 
     var version = $.fn.jquery.split(' ')[0].split('.');
     var minMajor = 1;
     var ltMajor = 2;
     var minMinor = 9;
     var minPatch = 1;
     var maxMajor = 4;
 
     if (version[0] < ltMajor && version[1] < minMinor || version[0] === minMajor && version[1] === minMinor && version[2] < minPatch || version[0] >= maxMajor) {
       throw new Error('Bootstrap\'s JavaScript requires at least jQuery v1.9.1 but less than v4.0.0');
     }
   })();
 
   exports.Util = Util;
   exports.Alert = Alert;
   exports.Button = Button;
   exports.Carousel = Carousel;
   exports.Collapse = Collapse;
   exports.Dropdown = Dropdown;
   exports.Modal = Modal;
   exports.Popover = Popover;
   exports.Scrollspy = ScrollSpy;
   exports.Tab = Tab;
   exports.Toast = Toast;
   exports.Tooltip = Tooltip;
 
   Object.defineProperty(exports, '__esModule', { value: true });
 
 }));
 //# sourceMappingURL=bootstrap.bundle.js.map