/*!

* Bootstrap v4.5.0 (https://getbootstrap.com/)
* Copyright 2011-2020 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';

$ = $ && Object.prototype.hasOwnProperty.call($, '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 ownKeys(object, enumerableOnly) {
  var keys = Object.keys(object);

  if (Object.getOwnPropertySymbols) {
    var symbols = Object.getOwnPropertySymbols(object);
    if (enumerableOnly) symbols = symbols.filter(function (sym) {
      return Object.getOwnPropertyDescriptor(object, sym).enumerable;
    });
    keys.push.apply(keys, symbols);
  }

  return keys;
}

function _objectSpread2(target) {
  for (var i = 1; i < arguments.length; i++) {
    var source = arguments[i] != null ? arguments[i] : {};

    if (i % 2) {
      ownKeys(Object(source), true).forEach(function (key) {
        _defineProperty(target, key, source[key]);
      });
    } else if (Object.getOwnPropertyDescriptors) {
      Object.defineProperties(target, Object.getOwnPropertyDescriptors(source));
    } else {
      ownKeys(Object(source)).forEach(function (key) {
        Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key));
      });
    }
  }

  return target;
}

function _inheritsLoose(subClass, superClass) {
  subClass.prototype = Object.create(superClass.prototype);
  subClass.prototype.constructor = subClass;
  subClass.__proto__ = superClass;
}

/**
 * --------------------------------------------------------------------------
 * Bootstrap (v4.5.0): 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) {
  if (obj === null || typeof obj === 'undefined') {
    return "" + 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;
    }
  };
}

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);
  },
  jQueryDetection: function jQueryDetection() {
    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');
    }
  }
};
Util.jQueryDetection();
setTransitionEndSupport();

/**
 * ------------------------------------------------------------------------
 * Constants
 * ------------------------------------------------------------------------
 */

var NAME = 'alert';
var VERSION = '4.5.0';
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;
var EVENT_CLOSED = "closed" + EVENT_KEY;
var EVENT_CLICK_DATA_API = "click" + EVENT_KEY + DATA_API_KEY;
var CLASS_NAME_ALERT = 'alert';
var CLASS_NAME_FADE = 'fade';
var CLASS_NAME_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("." + CLASS_NAME_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(CLASS_NAME_SHOW);

    if (!$(element).hasClass(CLASS_NAME_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 = '4.5.0';
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 CLASS_NAME_ACTIVE = 'active';
var CLASS_NAME_BUTTON = 'btn';
var CLASS_NAME_FOCUS = 'focus';
var SELECTOR_DATA_TOGGLE_CARROT = '[data-toggle^="button"]';
var SELECTOR_DATA_TOGGLES = '[data-toggle="buttons"]';
var SELECTOR_DATA_TOGGLE = '[data-toggle="button"]';
var SELECTOR_DATA_TOGGLES_BUTTONS = '[data-toggle="buttons"] .btn';
var SELECTOR_INPUT = 'input:not([type="hidden"])';
var SELECTOR_ACTIVE = '.active';
var SELECTOR_BUTTON = '.btn';
var EVENT_CLICK_DATA_API$1 = "click" + EVENT_KEY$1 + DATA_API_KEY$1;
var EVENT_FOCUS_BLUR_DATA_API = "focus" + EVENT_KEY$1 + DATA_API_KEY$1 + " " + ("blur" + EVENT_KEY$1 + DATA_API_KEY$1);
var EVENT_LOAD_DATA_API = "load" + 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_DATA_TOGGLES)[0];

    if (rootElement) {
      var input = this._element.querySelector(SELECTOR_INPUT);

      if (input) {
        if (input.type === 'radio') {
          if (input.checked && this._element.classList.contains(CLASS_NAME_ACTIVE)) {
            triggerChangeEvent = false;
          } else {
            var activeElement = rootElement.querySelector(SELECTOR_ACTIVE);

            if (activeElement) {
              $(activeElement).removeClass(CLASS_NAME_ACTIVE);
            }
          }
        }

        if (triggerChangeEvent) {
          // if it's not a radio button or checkbox don't add a pointless/invalid checked property to the input
          if (input.type === 'checkbox' || input.type === 'radio') {
            input.checked = !this._element.classList.contains(CLASS_NAME_ACTIVE);
          }

          $(input).trigger('change');
        }

        input.focus();
        addAriaPressed = false;
      }
    }

    if (!(this._element.hasAttribute('disabled') || this._element.classList.contains('disabled'))) {
      if (addAriaPressed) {
        this._element.setAttribute('aria-pressed', !this._element.classList.contains(CLASS_NAME_ACTIVE));
      }

      if (triggerChangeEvent) {
        $(this._element).toggleClass(CLASS_NAME_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_CLICK_DATA_API$1, SELECTOR_DATA_TOGGLE_CARROT, function (event) {
  var button = event.target;
  var initialButton = button;

  if (!$(button).hasClass(CLASS_NAME_BUTTON)) {
    button = $(button).closest(SELECTOR_BUTTON)[0];
  }

  if (!button || button.hasAttribute('disabled') || button.classList.contains('disabled')) {
    event.preventDefault(); // work around Firefox bug #1540995
  } else {
    var inputBtn = button.querySelector(SELECTOR_INPUT);

    if (inputBtn && (inputBtn.hasAttribute('disabled') || inputBtn.classList.contains('disabled'))) {
      event.preventDefault(); // work around Firefox bug #1540995

      return;
    }

    if (initialButton.tagName === 'LABEL' && inputBtn && inputBtn.type === 'checkbox') {
      event.preventDefault(); // work around event sent to label and input
    }

    Button._jQueryInterface.call($(button), 'toggle');
  }
}).on(EVENT_FOCUS_BLUR_DATA_API, SELECTOR_DATA_TOGGLE_CARROT, function (event) {
  var button = $(event.target).closest(SELECTOR_BUTTON)[0];
  $(button).toggleClass(CLASS_NAME_FOCUS, /^focus(in)?$/.test(event.type));
});
$(window).on(EVENT_LOAD_DATA_API, function () {
  // ensure correct active class is set to match the controls' actual values/states
  // find all checkboxes/readio buttons inside data-toggle groups
  var buttons = [].slice.call(document.querySelectorAll(SELECTOR_DATA_TOGGLES_BUTTONS));

  for (var i = 0, len = buttons.length; i < len; i++) {
    var button = buttons[i];
    var input = button.querySelector(SELECTOR_INPUT);

    if (input.checked || input.hasAttribute('checked')) {
      button.classList.add(CLASS_NAME_ACTIVE);
    } else {
      button.classList.remove(CLASS_NAME_ACTIVE);
    }
  } // find all button toggles

  buttons = [].slice.call(document.querySelectorAll(SELECTOR_DATA_TOGGLE));

  for (var _i = 0, _len = buttons.length; _i < _len; _i++) {
    var _button = buttons[_i];

    if (_button.getAttribute('aria-pressed') === 'true') {
      _button.classList.add(CLASS_NAME_ACTIVE);
    } else {
      _button.classList.remove(CLASS_NAME_ACTIVE);
    }
  }
});
/**
 * ------------------------------------------------------------------------
 * 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 = '4.5.0';
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';
var DIRECTION_PREV = 'prev';
var DIRECTION_LEFT = 'left';
var DIRECTION_RIGHT = 'right';
var EVENT_SLIDE = "slide" + EVENT_KEY$2;
var EVENT_SLID = "slid" + EVENT_KEY$2;
var EVENT_KEYDOWN = "keydown" + EVENT_KEY$2;
var EVENT_MOUSEENTER = "mouseenter" + EVENT_KEY$2;
var EVENT_MOUSELEAVE = "mouseleave" + EVENT_KEY$2;
var EVENT_TOUCHSTART = "touchstart" + EVENT_KEY$2;
var EVENT_TOUCHMOVE = "touchmove" + EVENT_KEY$2;
var EVENT_TOUCHEND = "touchend" + EVENT_KEY$2;
var EVENT_POINTERDOWN = "pointerdown" + EVENT_KEY$2;
var EVENT_POINTERUP = "pointerup" + EVENT_KEY$2;
var EVENT_DRAG_START = "dragstart" + EVENT_KEY$2;
var EVENT_LOAD_DATA_API$1 = "load" + EVENT_KEY$2 + DATA_API_KEY$2;
var EVENT_CLICK_DATA_API$2 = "click" + EVENT_KEY$2 + DATA_API_KEY$2;
var CLASS_NAME_CAROUSEL = 'carousel';
var CLASS_NAME_ACTIVE$1 = 'active';
var CLASS_NAME_SLIDE = 'slide';
var CLASS_NAME_RIGHT = 'carousel-item-right';
var CLASS_NAME_LEFT = 'carousel-item-left';
var CLASS_NAME_NEXT = 'carousel-item-next';
var CLASS_NAME_PREV = 'carousel-item-prev';
var CLASS_NAME_POINTER_EVENT = 'pointer-event';
var SELECTOR_ACTIVE$1 = '.active';
var SELECTOR_ACTIVE_ITEM = '.active.carousel-item';
var SELECTOR_ITEM = '.carousel-item';
var SELECTOR_ITEM_IMG = '.carousel-item img';
var SELECTOR_NEXT_PREV = '.carousel-item-next, .carousel-item-prev';
var SELECTOR_INDICATORS = '.carousel-indicators';
var SELECTOR_DATA_SLIDE = '[data-slide], [data-slide-to]';
var SELECTOR_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_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_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_ACTIVE_ITEM);

    var activeIndex = this._getItemIndex(this._activeElement);

    if (index > this._items.length - 1 || index < 0) {
      return;
    }

    if (this._isSliding) {
      $(this._element).one(EVENT_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 = _objectSpread2(_objectSpread2({}, 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;
    this.touchDeltaX = 0; // 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_KEYDOWN, function (event) {
        return _this2._keydown(event);
      });
    }

    if (this._config.pause === 'hover') {
      $(this._element).on(EVENT_MOUSEENTER, function (event) {
        return _this2.pause(event);
      }).on(EVENT_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_ITEM_IMG)).on(EVENT_DRAG_START, function (e) {
      return e.preventDefault();
    });

    if (this._pointerEvent) {
      $(this._element).on(EVENT_POINTERDOWN, function (event) {
        return start(event);
      });
      $(this._element).on(EVENT_POINTERUP, function (event) {
        return end(event);
      });

      this._element.classList.add(CLASS_NAME_POINTER_EVENT);
    } else {
      $(this._element).on(EVENT_TOUCHSTART, function (event) {
        return start(event);
      });
      $(this._element).on(EVENT_TOUCHMOVE, function (event) {
        return move(event);
      });
      $(this._element).on(EVENT_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;
    }
  };

  _proto._getItemIndex = function _getItemIndex(element) {
    this._items = element && element.parentNode ? [].slice.call(element.parentNode.querySelectorAll(SELECTOR_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_ACTIVE_ITEM));

    var slideEvent = $.Event(EVENT_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_ACTIVE$1));
      $(indicators).removeClass(CLASS_NAME_ACTIVE$1);

      var nextIndicator = this._indicatorsElement.children[this._getItemIndex(element)];

      if (nextIndicator) {
        $(nextIndicator).addClass(CLASS_NAME_ACTIVE$1);
      }
    }
  };

  _proto._slide = function _slide(direction, element) {
    var _this4 = this;

    var activeElement = this._element.querySelector(SELECTOR_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 = CLASS_NAME_LEFT;
      orderClassName = CLASS_NAME_NEXT;
      eventDirectionName = DIRECTION_LEFT;
    } else {
      directionalClassName = CLASS_NAME_RIGHT;
      orderClassName = CLASS_NAME_PREV;
      eventDirectionName = DIRECTION_RIGHT;
    }

    if (nextElement && $(nextElement).hasClass(CLASS_NAME_ACTIVE$1)) {
      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_SLID, {
      relatedTarget: nextElement,
      direction: eventDirectionName,
      from: activeElementIndex,
      to: nextElementIndex
    });

    if ($(this._element).hasClass(CLASS_NAME_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(CLASS_NAME_ACTIVE$1);
        $(activeElement).removeClass(CLASS_NAME_ACTIVE$1 + " " + orderClassName + " " + directionalClassName);
        _this4._isSliding = false;
        setTimeout(function () {
          return $(_this4._element).trigger(slidEvent);
        }, 0);
      }).emulateTransitionEnd(transitionDuration);
    } else {
      $(activeElement).removeClass(CLASS_NAME_ACTIVE$1);
      $(nextElement).addClass(CLASS_NAME_ACTIVE$1);
      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 = _objectSpread2(_objectSpread2({}, Default), $(this).data());

      if (typeof config === 'object') {
        _config = _objectSpread2(_objectSpread2({}, _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(CLASS_NAME_CAROUSEL)) {
      return;
    }

    var config = _objectSpread2(_objectSpread2({}, $(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_CLICK_DATA_API$2, SELECTOR_DATA_SLIDE, Carousel._dataApiClickHandler);
$(window).on(EVENT_LOAD_DATA_API$1, function () {
  var carousels = [].slice.call(document.querySelectorAll(SELECTOR_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 = '4.5.0';
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_SHOW = "show" + EVENT_KEY$3;
var EVENT_SHOWN = "shown" + EVENT_KEY$3;
var EVENT_HIDE = "hide" + EVENT_KEY$3;
var EVENT_HIDDEN = "hidden" + EVENT_KEY$3;
var EVENT_CLICK_DATA_API$3 = "click" + EVENT_KEY$3 + DATA_API_KEY$3;
var CLASS_NAME_SHOW$1 = 'show';
var CLASS_NAME_COLLAPSE = 'collapse';
var CLASS_NAME_COLLAPSING = 'collapsing';
var CLASS_NAME_COLLAPSED = 'collapsed';
var DIMENSION_WIDTH = 'width';
var DIMENSION_HEIGHT = 'height';
var SELECTOR_ACTIVES = '.show, .collapsing';
var SELECTOR_DATA_TOGGLE$1 = '[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_DATA_TOGGLE$1));

    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(CLASS_NAME_SHOW$1)) {
      this.hide();
    } else {
      this.show();
    }
  };

  _proto.show = function show() {
    var _this = this;

    if (this._isTransitioning || $(this._element).hasClass(CLASS_NAME_SHOW$1)) {
      return;
    }

    var actives;
    var activesData;

    if (this._parent) {
      actives = [].slice.call(this._parent.querySelectorAll(SELECTOR_ACTIVES)).filter(function (elem) {
        if (typeof _this._config.parent === 'string') {
          return elem.getAttribute('data-parent') === _this._config.parent;
        }

        return elem.classList.contains(CLASS_NAME_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_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(CLASS_NAME_COLLAPSE).addClass(CLASS_NAME_COLLAPSING);
    this._element.style[dimension] = 0;

    if (this._triggerArray.length) {
      $(this._triggerArray).removeClass(CLASS_NAME_COLLAPSED).attr('aria-expanded', true);
    }

    this.setTransitioning(true);

    var complete = function complete() {
      $(_this._element).removeClass(CLASS_NAME_COLLAPSING).addClass(CLASS_NAME_COLLAPSE + " " + CLASS_NAME_SHOW$1);
      _this._element.style[dimension] = '';

      _this.setTransitioning(false);

      $(_this._element).trigger(EVENT_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(CLASS_NAME_SHOW$1)) {
      return;
    }

    var startEvent = $.Event(EVENT_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(CLASS_NAME_COLLAPSING).removeClass(CLASS_NAME_COLLAPSE + " " + CLASS_NAME_SHOW$1);
    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(CLASS_NAME_SHOW$1)) {
            $(trigger).addClass(CLASS_NAME_COLLAPSED).attr('aria-expanded', false);
          }
        }
      }
    }

    this.setTransitioning(true);

    var complete = function complete() {
      _this2.setTransitioning(false);

      $(_this2._element).removeClass(CLASS_NAME_COLLAPSING).addClass(CLASS_NAME_COLLAPSE).trigger(EVENT_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 = _objectSpread2(_objectSpread2({}, 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(CLASS_NAME_SHOW$1);

    if (triggerArray.length) {
      $(triggerArray).toggleClass(CLASS_NAME_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 = _objectSpread2(_objectSpread2(_objectSpread2({}, Default$1), $this.data()), typeof config === 'object' && config ? config : {});

      if (!data && _config.toggle && typeof config === 'string' && /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_CLICK_DATA_API$3, SELECTOR_DATA_TOGGLE$1, 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 1.16.0
 * @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' && typeof navigator !== 'undefined';

var timeoutDuration = function () {
  var longerTimeoutBrowsers = ['Edge', 'Trident', 'Firefox'];
  for (var i = 0; i < longerTimeoutBrowsers.length; i += 1) {
    if (isBrowser && navigator.userAgent.indexOf(longerTimeoutBrowsers[i]) >= 0) {
      return 1;
    }
  }
  return 0;
}();

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));
}

/**
 * Returns the reference node of the reference object, or the reference object itself.
 * @method
 * @memberof Popper.Utils
 * @param {Element|Object} reference - the reference element (the popper will be relative to this)
 * @returns {Element} parent
 */
function getReferenceNode(reference) {
  return reference && reference.referenceNode ? reference.referenceNode : reference;
}

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.width;
  var height = sizes.height || element.clientHeight || result.height;

  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, getReferenceNode(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, getReferenceNode(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 explicitly 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;

    // flips variation if reference element overflows boundaries
    var flippedVariationByRef = !!options.flipVariations && (isVertical && variation === 'start' && overflowsLeft || isVertical && variation === 'end' && overflowsRight || !isVertical && variation === 'start' && overflowsTop || !isVertical && variation === 'end' && overflowsBottom);

    // flips variation if popper content overflows boundaries
    var flippedVariationByContent = !!options.flipVariationsByContent && (isVertical && variation === 'start' && overflowsRight || isVertical && variation === 'end' && overflowsLeft || !isVertical && variation === 'start' && overflowsBottom || !isVertical && variation === 'end' && overflowsTop);

    var flippedVariation = flippedVariationByRef || flippedVariationByContent;

    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',
    /**
     * @prop {Boolean} flipVariations=false
     * The popper will switch placement variation between `-start` and `-end` when
     * the reference element overlaps its boundaries.
     *
     * The original placement should have a set variation.
     */
    flipVariations: false,
    /**
     * @prop {Boolean} flipVariationsByContent=false
     * The popper will switch placement variation between `-start` and `-end` when
     * the popper element overlaps its reference boundaries.
     *
     * The original placement should have a set variation.
     */
    flipVariationsByContent: false
  },

  /**
   * 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 {Element|referenceObject} reference - The reference element used to position the popper
   * @param {Element} popper - The HTML / XML 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 = '4.5.0';
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_HIDE$1 = "hide" + EVENT_KEY$4;
var EVENT_HIDDEN$1 = "hidden" + EVENT_KEY$4;
var EVENT_SHOW$1 = "show" + EVENT_KEY$4;
var EVENT_SHOWN$1 = "shown" + EVENT_KEY$4;
var EVENT_CLICK = "click" + EVENT_KEY$4;
var EVENT_CLICK_DATA_API$4 = "click" + EVENT_KEY$4 + DATA_API_KEY$4;
var EVENT_KEYDOWN_DATA_API = "keydown" + EVENT_KEY$4 + DATA_API_KEY$4;
var EVENT_KEYUP_DATA_API = "keyup" + EVENT_KEY$4 + DATA_API_KEY$4;
var CLASS_NAME_DISABLED = 'disabled';
var CLASS_NAME_SHOW$2 = 'show';
var CLASS_NAME_DROPUP = 'dropup';
var CLASS_NAME_DROPRIGHT = 'dropright';
var CLASS_NAME_DROPLEFT = 'dropleft';
var CLASS_NAME_MENURIGHT = 'dropdown-menu-right';
var CLASS_NAME_POSITION_STATIC = 'position-static';
var SELECTOR_DATA_TOGGLE$2 = '[data-toggle="dropdown"]';
var SELECTOR_FORM_CHILD = '.dropdown form';
var SELECTOR_MENU = '.dropdown-menu';
var SELECTOR_NAVBAR_NAV = '.navbar-nav';
var SELECTOR_VISIBLE_ITEMS = '.dropdown-menu .dropdown-item:not(.disabled):not(:disabled)';
var PLACEMENT_TOP = 'top-start';
var PLACEMENT_TOPEND = 'top-end';
var PLACEMENT_BOTTOM = 'bottom-start';
var PLACEMENT_BOTTOMEND = 'bottom-end';
var PLACEMENT_RIGHT = 'right-start';
var PLACEMENT_LEFT = 'left-start';
var Default$2 = {
  offset: 0,
  flip: true,
  boundary: 'scrollParent',
  reference: 'toggle',
  display: 'dynamic',
  popperConfig: null
};
var DefaultType$2 = {
  offset: '(number|string|function)',
  flip: 'boolean',
  boundary: '(string|element)',
  reference: '(string|element)',
  display: 'string',
  popperConfig: '(null|object)'
};
/**
 * ------------------------------------------------------------------------
 * 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(CLASS_NAME_DISABLED)) {
      return;
    }

    var isActive = $(this._menu).hasClass(CLASS_NAME_SHOW$2);

    Dropdown._clearMenus();

    if (isActive) {
      return;
    }

    this.show(true);
  };

  _proto.show = function show(usePopper) {
    if (usePopper === void 0) {
      usePopper = false;
    }

    if (this._element.disabled || $(this._element).hasClass(CLASS_NAME_DISABLED) || $(this._menu).hasClass(CLASS_NAME_SHOW$2)) {
      return;
    }

    var relatedTarget = {
      relatedTarget: this._element
    };
    var showEvent = $.Event(EVENT_SHOW$1, relatedTarget);

    var parent = Dropdown._getParentFromElement(this._element);

    $(parent).trigger(showEvent);

    if (showEvent.isDefaultPrevented()) {
      return;
    } // Disable totally Popper.js for Dropdown in Navbar

    if (!this._inNavbar && usePopper) {
      /**
       * 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(CLASS_NAME_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_NAVBAR_NAV).length === 0) {
      $(document.body).children().on('mouseover', null, $.noop);
    }

    this._element.focus();

    this._element.setAttribute('aria-expanded', true);

    $(this._menu).toggleClass(CLASS_NAME_SHOW$2);
    $(parent).toggleClass(CLASS_NAME_SHOW$2).trigger($.Event(EVENT_SHOWN$1, relatedTarget));
  };

  _proto.hide = function hide() {
    if (this._element.disabled || $(this._element).hasClass(CLASS_NAME_DISABLED) || !$(this._menu).hasClass(CLASS_NAME_SHOW$2)) {
      return;
    }

    var relatedTarget = {
      relatedTarget: this._element
    };
    var hideEvent = $.Event(EVENT_HIDE$1, relatedTarget);

    var parent = Dropdown._getParentFromElement(this._element);

    $(parent).trigger(hideEvent);

    if (hideEvent.isDefaultPrevented()) {
      return;
    }

    if (this._popper) {
      this._popper.destroy();
    }

    $(this._menu).toggleClass(CLASS_NAME_SHOW$2);
    $(parent).toggleClass(CLASS_NAME_SHOW$2).trigger($.Event(EVENT_HIDDEN$1, 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_CLICK, function (event) {
      event.preventDefault();
      event.stopPropagation();

      _this.toggle();
    });
  };

  _proto._getConfig = function _getConfig(config) {
    config = _objectSpread2(_objectSpread2(_objectSpread2({}, 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_MENU);
      }
    }

    return this._menu;
  };

  _proto._getPlacement = function _getPlacement() {
    var $parentDropdown = $(this._element.parentNode);
    var placement = PLACEMENT_BOTTOM; // Handle dropup

    if ($parentDropdown.hasClass(CLASS_NAME_DROPUP)) {
      placement = $(this._menu).hasClass(CLASS_NAME_MENURIGHT) ? PLACEMENT_TOPEND : PLACEMENT_TOP;
    } else if ($parentDropdown.hasClass(CLASS_NAME_DROPRIGHT)) {
      placement = PLACEMENT_RIGHT;
    } else if ($parentDropdown.hasClass(CLASS_NAME_DROPLEFT)) {
      placement = PLACEMENT_LEFT;
    } else if ($(this._menu).hasClass(CLASS_NAME_MENURIGHT)) {
      placement = PLACEMENT_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 = _objectSpread2(_objectSpread2({}, 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 _objectSpread2(_objectSpread2({}, popperConfig), this._config.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_DATA_TOGGLE$2));

    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(CLASS_NAME_SHOW$2)) {
        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_HIDE$1, 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');

      if (context._popper) {
        context._popper.destroy();
      }

      $(dropdownMenu).removeClass(CLASS_NAME_SHOW$2);
      $(parent).removeClass(CLASS_NAME_SHOW$2).trigger($.Event(EVENT_HIDDEN$1, 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_MENU).length) : !REGEXP_KEYDOWN.test(event.which)) {
      return;
    }

    if (this.disabled || $(this).hasClass(CLASS_NAME_DISABLED)) {
      return;
    }

    var parent = Dropdown._getParentFromElement(this);

    var isActive = $(parent).hasClass(CLASS_NAME_SHOW$2);

    if (!isActive && event.which === ESCAPE_KEYCODE) {
      return;
    }

    event.preventDefault();
    event.stopPropagation();

    if (!isActive || isActive && (event.which === ESCAPE_KEYCODE || event.which === SPACE_KEYCODE)) {
      if (event.which === ESCAPE_KEYCODE) {
        $(parent.querySelector(SELECTOR_DATA_TOGGLE$2)).trigger('focus');
      }

      $(this).trigger('click');
      return;
    }

    var items = [].slice.call(parent.querySelectorAll(SELECTOR_VISIBLE_ITEMS)).filter(function (item) {
      return $(item).is(':visible');
    });

    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_KEYDOWN_DATA_API, SELECTOR_DATA_TOGGLE$2, Dropdown._dataApiKeydownHandler).on(EVENT_KEYDOWN_DATA_API, SELECTOR_MENU, Dropdown._dataApiKeydownHandler).on(EVENT_CLICK_DATA_API$4 + " " + EVENT_KEYUP_DATA_API, Dropdown._clearMenus).on(EVENT_CLICK_DATA_API$4, SELECTOR_DATA_TOGGLE$2, function (event) {
  event.preventDefault();
  event.stopPropagation();

  Dropdown._jQueryInterface.call($(this), 'toggle');
}).on(EVENT_CLICK_DATA_API$4, SELECTOR_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 = '4.5.0';
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_HIDE$2 = "hide" + EVENT_KEY$5;
var EVENT_HIDE_PREVENTED = "hidePrevented" + EVENT_KEY$5;
var EVENT_HIDDEN$2 = "hidden" + EVENT_KEY$5;
var EVENT_SHOW$2 = "show" + EVENT_KEY$5;
var EVENT_SHOWN$2 = "shown" + EVENT_KEY$5;
var EVENT_FOCUSIN = "focusin" + EVENT_KEY$5;
var EVENT_RESIZE = "resize" + EVENT_KEY$5;
var EVENT_CLICK_DISMISS = "click.dismiss" + EVENT_KEY$5;
var EVENT_KEYDOWN_DISMISS = "keydown.dismiss" + EVENT_KEY$5;
var EVENT_MOUSEUP_DISMISS = "mouseup.dismiss" + EVENT_KEY$5;
var EVENT_MOUSEDOWN_DISMISS = "mousedown.dismiss" + EVENT_KEY$5;
var EVENT_CLICK_DATA_API$5 = "click" + EVENT_KEY$5 + DATA_API_KEY$5;
var CLASS_NAME_SCROLLABLE = 'modal-dialog-scrollable';
var CLASS_NAME_SCROLLBAR_MEASURER = 'modal-scrollbar-measure';
var CLASS_NAME_BACKDROP = 'modal-backdrop';
var CLASS_NAME_OPEN = 'modal-open';
var CLASS_NAME_FADE$1 = 'fade';
var CLASS_NAME_SHOW$3 = 'show';
var CLASS_NAME_STATIC = 'modal-static';
var SELECTOR_DIALOG = '.modal-dialog';
var SELECTOR_MODAL_BODY = '.modal-body';
var SELECTOR_DATA_TOGGLE$3 = '[data-toggle="modal"]';
var SELECTOR_DATA_DISMISS = '[data-dismiss="modal"]';
var SELECTOR_FIXED_CONTENT = '.fixed-top, .fixed-bottom, .is-fixed, .sticky-top';
var SELECTOR_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_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(CLASS_NAME_FADE$1)) {
      this._isTransitioning = true;
    }

    var showEvent = $.Event(EVENT_SHOW$2, {
      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_CLICK_DISMISS, SELECTOR_DATA_DISMISS, function (event) {
      return _this.hide(event);
    });
    $(this._dialog).on(EVENT_MOUSEDOWN_DISMISS, function () {
      $(_this._element).one(EVENT_MOUSEUP_DISMISS, function (event) {
        if ($(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_HIDE$2);
    $(this._element).trigger(hideEvent);

    if (!this._isShown || hideEvent.isDefaultPrevented()) {
      return;
    }

    this._isShown = false;
    var transition = $(this._element).hasClass(CLASS_NAME_FADE$1);

    if (transition) {
      this._isTransitioning = true;
    }

    this._setEscapeEvent();

    this._setResizeEvent();

    $(document).off(EVENT_FOCUSIN);
    $(this._element).removeClass(CLASS_NAME_SHOW$3);
    $(this._element).off(EVENT_CLICK_DISMISS);
    $(this._dialog).off(EVENT_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_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 = _objectSpread2(_objectSpread2({}, Default$3), config);
    Util.typeCheckConfig(NAME$5, config, DefaultType$3);
    return config;
  };

  _proto._triggerBackdropTransition = function _triggerBackdropTransition() {
    var _this3 = this;

    if (this._config.backdrop === 'static') {
      var hideEventPrevented = $.Event(EVENT_HIDE_PREVENTED);
      $(this._element).trigger(hideEventPrevented);

      if (hideEventPrevented.defaultPrevented) {
        return;
      }

      this._element.classList.add(CLASS_NAME_STATIC);

      var modalTransitionDuration = Util.getTransitionDurationFromElement(this._element);
      $(this._element).one(Util.TRANSITION_END, function () {
        _this3._element.classList.remove(CLASS_NAME_STATIC);
      }).emulateTransitionEnd(modalTransitionDuration);

      this._element.focus();
    } else {
      this.hide();
    }
  };

  _proto._showElement = function _showElement(relatedTarget) {
    var _this4 = this;

    var transition = $(this._element).hasClass(CLASS_NAME_FADE$1);
    var modalBody = this._dialog ? this._dialog.querySelector(SELECTOR_MODAL_BODY) : null;

    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(CLASS_NAME_SCROLLABLE) && modalBody) {
      modalBody.scrollTop = 0;
    } else {
      this._element.scrollTop = 0;
    }

    if (transition) {
      Util.reflow(this._element);
    }

    $(this._element).addClass(CLASS_NAME_SHOW$3);

    if (this._config.focus) {
      this._enforceFocus();
    }

    var shownEvent = $.Event(EVENT_SHOWN$2, {
      relatedTarget: relatedTarget
    });

    var transitionComplete = function transitionComplete() {
      if (_this4._config.focus) {
        _this4._element.focus();
      }

      _this4._isTransitioning = false;
      $(_this4._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 _this5 = this;

    $(document).off(EVENT_FOCUSIN) // Guard against infinite focus loop
    .on(EVENT_FOCUSIN, function (event) {
      if (document !== event.target && _this5._element !== event.target && $(_this5._element).has(event.target).length === 0) {
        _this5._element.focus();
      }
    });
  };

  _proto._setEscapeEvent = function _setEscapeEvent() {
    var _this6 = this;

    if (this._isShown) {
      $(this._element).on(EVENT_KEYDOWN_DISMISS, function (event) {
        if (_this6._config.keyboard && event.which === ESCAPE_KEYCODE$1) {
          event.preventDefault();

          _this6.hide();
        } else if (!_this6._config.keyboard && event.which === ESCAPE_KEYCODE$1) {
          _this6._triggerBackdropTransition();
        }
      });
    } else if (!this._isShown) {
      $(this._element).off(EVENT_KEYDOWN_DISMISS);
    }
  };

  _proto._setResizeEvent = function _setResizeEvent() {
    var _this7 = this;

    if (this._isShown) {
      $(window).on(EVENT_RESIZE, function (event) {
        return _this7.handleUpdate(event);
      });
    } else {
      $(window).off(EVENT_RESIZE);
    }
  };

  _proto._hideModal = function _hideModal() {
    var _this8 = 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(CLASS_NAME_OPEN);

      _this8._resetAdjustments();

      _this8._resetScrollbar();

      $(_this8._element).trigger(EVENT_HIDDEN$2);
    });
  };

  _proto._removeBackdrop = function _removeBackdrop() {
    if (this._backdrop) {
      $(this._backdrop).remove();
      this._backdrop = null;
    }
  };

  _proto._showBackdrop = function _showBackdrop(callback) {
    var _this9 = this;

    var animate = $(this._element).hasClass(CLASS_NAME_FADE$1) ? CLASS_NAME_FADE$1 : '';

    if (this._isShown && this._config.backdrop) {
      this._backdrop = document.createElement('div');
      this._backdrop.className = CLASS_NAME_BACKDROP;

      if (animate) {
        this._backdrop.classList.add(animate);
      }

      $(this._backdrop).appendTo(document.body);
      $(this._element).on(EVENT_CLICK_DISMISS, function (event) {
        if (_this9._ignoreBackdropClick) {
          _this9._ignoreBackdropClick = false;
          return;
        }

        if (event.target !== event.currentTarget) {
          return;
        }

        _this9._triggerBackdropTransition();
      });

      if (animate) {
        Util.reflow(this._backdrop);
      }

      $(this._backdrop).addClass(CLASS_NAME_SHOW$3);

      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(CLASS_NAME_SHOW$3);

      var callbackRemove = function callbackRemove() {
        _this9._removeBackdrop();

        if (callback) {
          callback();
        }
      };

      if ($(this._element).hasClass(CLASS_NAME_FADE$1)) {
        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 = Math.round(rect.left + rect.right) < window.innerWidth;
    this._scrollbarWidth = this._getScrollbarWidth();
  };

  _proto._setScrollbar = function _setScrollbar() {
    var _this10 = 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_FIXED_CONTENT));
      var stickyContent = [].slice.call(document.querySelectorAll(SELECTOR_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) + _this10._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) - _this10._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(CLASS_NAME_OPEN);
  };

  _proto._resetScrollbar = function _resetScrollbar() {
    // Restore fixed content padding
    var fixedContent = [].slice.call(document.querySelectorAll(SELECTOR_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_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 = CLASS_NAME_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 = _objectSpread2(_objectSpread2(_objectSpread2({}, 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_CLICK_DATA_API$5, SELECTOR_DATA_TOGGLE$3, function (event) {
  var _this11 = this;

  var target;
  var selector = Util.getSelectorFromElement(this);

  if (selector) {
    target = document.querySelector(selector);
  }

  var config = $(target).data(DATA_KEY$5) ? 'toggle' : _objectSpread2(_objectSpread2({}, $(target).data()), $(this).data());

  if (this.tagName === 'A' || this.tagName === 'AREA') {
    event.preventDefault();
  }

  var $target = $(target).one(EVENT_SHOW$2, function (showEvent) {
    if (showEvent.isDefaultPrevented()) {
      // Only register focus restorer if modal will actually get shown
      return;
    }

    $target.one(EVENT_HIDDEN$2, function () {
      if ($(_this11).is(':visible')) {
        _this11.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 (v4.5.0): 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', 'srcset', '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,[\d+/a-z]+=*$/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, len = regExp.length; i < len; 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);

    if (_ret === "continue") continue;
  }

  return createdDocument.body.innerHTML;
}

/**
 * ------------------------------------------------------------------------
 * Constants
 * ------------------------------------------------------------------------
 */

var NAME$6 = 'tooltip';
var VERSION$6 = '4.5.0';
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',
  popperConfig: '(null|object)'
};
var AttachmentMap = {
  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,
  popperConfig: null
};
var HOVER_STATE_SHOW = 'show';
var HOVER_STATE_OUT = 'out';
var Event = {
  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 CLASS_NAME_FADE$2 = 'fade';
var CLASS_NAME_SHOW$4 = 'show';
var SELECTOR_TOOLTIP_INNER = '.tooltip-inner';
var SELECTOR_ARROW = '.arrow';
var TRIGGER_HOVER = 'hover';
var TRIGGER_FOCUS = 'focus';
var TRIGGER_CLICK = 'click';
var TRIGGER_MANUAL = 'manual';
/**
 * ------------------------------------------------------------------------
 * Class Definition
 * ------------------------------------------------------------------------
 */

var Tooltip = /*#__PURE__*/function () {
  function Tooltip(element, config) {
    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(CLASS_NAME_SHOW$4)) {
        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', this._hideModalHandler);

    if (this.tip) {
      $(this.tip).remove();
    }

    this._isEnabled = null;
    this._timeout = null;
    this._hoverState = null;
    this._activeTrigger = null;

    if (this._popper) {
      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(CLASS_NAME_FADE$2);
      }

      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, this._getPopperConfig(attachment));
      $(tip).addClass(CLASS_NAME_SHOW$4); // 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 === HOVER_STATE_OUT) {
          _this._leave(null, _this);
        }
      };

      if ($(this.tip).hasClass(CLASS_NAME_FADE$2)) {
        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 !== HOVER_STATE_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(CLASS_NAME_SHOW$4); // 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(CLASS_NAME_FADE$2)) {
      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_TOOLTIP_INNER)), this.getTitle());
    $(tip).removeClass(CLASS_NAME_FADE$2 + " " + CLASS_NAME_SHOW$4);
  };

  _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._getPopperConfig = function _getPopperConfig(attachment) {
    var _this3 = this;

    var defaultBsConfig = {
      placement: attachment,
      modifiers: {
        offset: this._getOffset(),
        flip: {
          behavior: this.config.fallbackPlacement
        },
        arrow: {
          element: SELECTOR_ARROW
        },
        preventOverflow: {
          boundariesElement: this.config.boundary
        }
      },
      onCreate: function onCreate(data) {
        if (data.originalPlacement !== data.placement) {
          _this3._handlePopperPlacementChange(data);
        }
      },
      onUpdate: function onUpdate(data) {
        return _this3._handlePopperPlacementChange(data);
      }
    };
    return _objectSpread2(_objectSpread2({}, defaultBsConfig), this.config.popperConfig);
  };

  _proto._getOffset = function _getOffset() {
    var _this4 = this;

    var offset = {};

    if (typeof this.config.offset === 'function') {
      offset.fn = function (data) {
        data.offsets = _objectSpread2(_objectSpread2({}, data.offsets), _this4.config.offset(data.offsets, _this4.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[placement.toUpperCase()];
  };

  _proto._setListeners = function _setListeners() {
    var _this5 = this;

    var triggers = this.config.trigger.split(' ');
    triggers.forEach(function (trigger) {
      if (trigger === 'click') {
        $(_this5.element).on(_this5.constructor.Event.CLICK, _this5.config.selector, function (event) {
          return _this5.toggle(event);
        });
      } else if (trigger !== TRIGGER_MANUAL) {
        var eventIn = trigger === TRIGGER_HOVER ? _this5.constructor.Event.MOUSEENTER : _this5.constructor.Event.FOCUSIN;
        var eventOut = trigger === TRIGGER_HOVER ? _this5.constructor.Event.MOUSELEAVE : _this5.constructor.Event.FOCUSOUT;
        $(_this5.element).on(eventIn, _this5.config.selector, function (event) {
          return _this5._enter(event);
        }).on(eventOut, _this5.config.selector, function (event) {
          return _this5._leave(event);
        });
      }
    });

    this._hideModalHandler = function () {
      if (_this5.element) {
        _this5.hide();
      }
    };

    $(this.element).closest('.modal').on('hide.bs.modal', this._hideModalHandler);

    if (this.config.selector) {
      this.config = _objectSpread2(_objectSpread2({}, 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(CLASS_NAME_SHOW$4) || context._hoverState === HOVER_STATE_SHOW) {
      context._hoverState = HOVER_STATE_SHOW;
      return;
    }

    clearTimeout(context._timeout);
    context._hoverState = HOVER_STATE_SHOW;

    if (!context.config.delay || !context.config.delay.show) {
      context.show();
      return;
    }

    context._timeout = setTimeout(function () {
      if (context._hoverState === HOVER_STATE_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 = HOVER_STATE_OUT;

    if (!context.config.delay || !context.config.delay.hide) {
      context.hide();
      return;
    }

    context._timeout = setTimeout(function () {
      if (context._hoverState === HOVER_STATE_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 = _objectSpread2(_objectSpread2(_objectSpread2({}, 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) {
    this.tip = popperData.instance.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(CLASS_NAME_FADE$2);
    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;
    }
  }, {
    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 = '4.5.0';
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 = _objectSpread2(_objectSpread2({}, 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 = _objectSpread2(_objectSpread2({}, Tooltip.DefaultType), {}, {
  content: '(string|element|function)'
});

var CLASS_NAME_FADE$3 = 'fade';
var CLASS_NAME_SHOW$5 = 'show';
var SELECTOR_TITLE = '.popover-header';
var SELECTOR_CONTENT = '.popover-body';
var Event$1 = {
  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_TITLE), this.getTitle());

    var content = this._getContent();

    if (typeof content === 'function') {
      content = content.call(this.element);
    }

    this.setElementContent($tip.find(SELECTOR_CONTENT), content);
    $tip.removeClass(CLASS_NAME_FADE$3 + " " + CLASS_NAME_SHOW$5);
  } // 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$1;
    }
  }, {
    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 = '4.5.0';
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_ACTIVATE = "activate" + EVENT_KEY$8;
var EVENT_SCROLL = "scroll" + EVENT_KEY$8;
var EVENT_LOAD_DATA_API$2 = "load" + EVENT_KEY$8 + DATA_API_KEY$6;
var CLASS_NAME_DROPDOWN_ITEM = 'dropdown-item';
var CLASS_NAME_ACTIVE$2 = 'active';
var SELECTOR_DATA_SPY = '[data-spy="scroll"]';
var SELECTOR_NAV_LIST_GROUP = '.nav, .list-group';
var SELECTOR_NAV_LINKS = '.nav-link';
var SELECTOR_NAV_ITEMS = '.nav-item';
var SELECTOR_LIST_ITEMS = '.list-group-item';
var SELECTOR_DROPDOWN = '.dropdown';
var SELECTOR_DROPDOWN_ITEMS = '.dropdown-item';
var SELECTOR_DROPDOWN_TOGGLE = '.dropdown-toggle';
var METHOD_OFFSET = 'offset';
var METHOD_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_NAV_LINKS + "," + (this._config.target + " " + SELECTOR_LIST_ITEMS + ",") + (this._config.target + " " + SELECTOR_DROPDOWN_ITEMS);
    this._offsets = [];
    this._targets = [];
    this._activeTarget = null;
    this._scrollHeight = 0;
    $(this._scrollElement).on(EVENT_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 ? METHOD_OFFSET : METHOD_POSITION;
    var offsetMethod = this._config.method === 'auto' ? autoMethod : this._config.method;
    var offsetBase = offsetMethod === METHOD_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 = _objectSpread2(_objectSpread2({}, Default$6), typeof config === 'object' && config ? config : {});

    if (typeof config.target !== 'string' && Util.isElement(config.target)) {
      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;
    }

    for (var i = this._offsets.length; 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(CLASS_NAME_DROPDOWN_ITEM)) {
      $link.closest(SELECTOR_DROPDOWN).find(SELECTOR_DROPDOWN_TOGGLE).addClass(CLASS_NAME_ACTIVE$2);
      $link.addClass(CLASS_NAME_ACTIVE$2);
    } else {
      // Set triggered link as active
      $link.addClass(CLASS_NAME_ACTIVE$2); // 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_NAV_LIST_GROUP).prev(SELECTOR_NAV_LINKS + ", " + SELECTOR_LIST_ITEMS).addClass(CLASS_NAME_ACTIVE$2); // Handle special case when .nav-link is inside .nav-item

      $link.parents(SELECTOR_NAV_LIST_GROUP).prev(SELECTOR_NAV_ITEMS).children(SELECTOR_NAV_LINKS).addClass(CLASS_NAME_ACTIVE$2);
    }

    $(this._scrollElement).trigger(EVENT_ACTIVATE, {
      relatedTarget: target
    });
  };

  _proto._clear = function _clear() {
    [].slice.call(document.querySelectorAll(this._selector)).filter(function (node) {
      return node.classList.contains(CLASS_NAME_ACTIVE$2);
    }).forEach(function (node) {
      return node.classList.remove(CLASS_NAME_ACTIVE$2);
    });
  } // 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_LOAD_DATA_API$2, function () {
  var scrollSpys = [].slice.call(document.querySelectorAll(SELECTOR_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 = '4.5.0';
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_HIDE$3 = "hide" + EVENT_KEY$9;
var EVENT_HIDDEN$3 = "hidden" + EVENT_KEY$9;
var EVENT_SHOW$3 = "show" + EVENT_KEY$9;
var EVENT_SHOWN$3 = "shown" + EVENT_KEY$9;
var EVENT_CLICK_DATA_API$6 = "click" + EVENT_KEY$9 + DATA_API_KEY$7;
var CLASS_NAME_DROPDOWN_MENU = 'dropdown-menu';
var CLASS_NAME_ACTIVE$3 = 'active';
var CLASS_NAME_DISABLED$1 = 'disabled';
var CLASS_NAME_FADE$4 = 'fade';
var CLASS_NAME_SHOW$6 = 'show';
var SELECTOR_DROPDOWN$1 = '.dropdown';
var SELECTOR_NAV_LIST_GROUP$1 = '.nav, .list-group';
var SELECTOR_ACTIVE$2 = '.active';
var SELECTOR_ACTIVE_UL = '> li > .active';
var SELECTOR_DATA_TOGGLE$4 = '[data-toggle="tab"], [data-toggle="pill"], [data-toggle="list"]';
var SELECTOR_DROPDOWN_TOGGLE$1 = '.dropdown-toggle';
var SELECTOR_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(CLASS_NAME_ACTIVE$3) || $(this._element).hasClass(CLASS_NAME_DISABLED$1)) {
      return;
    }

    var target;
    var previous;
    var listElement = $(this._element).closest(SELECTOR_NAV_LIST_GROUP$1)[0];
    var selector = Util.getSelectorFromElement(this._element);

    if (listElement) {
      var itemSelector = listElement.nodeName === 'UL' || listElement.nodeName === 'OL' ? SELECTOR_ACTIVE_UL : SELECTOR_ACTIVE$2;
      previous = $.makeArray($(listElement).find(itemSelector));
      previous = previous[previous.length - 1];
    }

    var hideEvent = $.Event(EVENT_HIDE$3, {
      relatedTarget: this._element
    });
    var showEvent = $.Event(EVENT_SHOW$3, {
      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_HIDDEN$3, {
        relatedTarget: _this._element
      });
      var shownEvent = $.Event(EVENT_SHOWN$3, {
        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_ACTIVE_UL) : $(container).children(SELECTOR_ACTIVE$2);
    var active = activeElements[0];
    var isTransitioning = callback && active && $(active).hasClass(CLASS_NAME_FADE$4);

    var complete = function complete() {
      return _this2._transitionComplete(element, active, callback);
    };

    if (active && isTransitioning) {
      var transitionDuration = Util.getTransitionDurationFromElement(active);
      $(active).removeClass(CLASS_NAME_SHOW$6).one(Util.TRANSITION_END, complete).emulateTransitionEnd(transitionDuration);
    } else {
      complete();
    }
  };

  _proto._transitionComplete = function _transitionComplete(element, active, callback) {
    if (active) {
      $(active).removeClass(CLASS_NAME_ACTIVE$3);
      var dropdownChild = $(active.parentNode).find(SELECTOR_DROPDOWN_ACTIVE_CHILD)[0];

      if (dropdownChild) {
        $(dropdownChild).removeClass(CLASS_NAME_ACTIVE$3);
      }

      if (active.getAttribute('role') === 'tab') {
        active.setAttribute('aria-selected', false);
      }
    }

    $(element).addClass(CLASS_NAME_ACTIVE$3);

    if (element.getAttribute('role') === 'tab') {
      element.setAttribute('aria-selected', true);
    }

    Util.reflow(element);

    if (element.classList.contains(CLASS_NAME_FADE$4)) {
      element.classList.add(CLASS_NAME_SHOW$6);
    }

    if (element.parentNode && $(element.parentNode).hasClass(CLASS_NAME_DROPDOWN_MENU)) {
      var dropdownElement = $(element).closest(SELECTOR_DROPDOWN$1)[0];

      if (dropdownElement) {
        var dropdownToggleList = [].slice.call(dropdownElement.querySelectorAll(SELECTOR_DROPDOWN_TOGGLE$1));
        $(dropdownToggleList).addClass(CLASS_NAME_ACTIVE$3);
      }

      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_CLICK_DATA_API$6, SELECTOR_DATA_TOGGLE$4, 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 = '4.5.0';
var DATA_KEY$a = 'bs.toast';
var EVENT_KEY$a = "." + DATA_KEY$a;
var JQUERY_NO_CONFLICT$a = $.fn[NAME$a];
var EVENT_CLICK_DISMISS$1 = "click.dismiss" + EVENT_KEY$a;
var EVENT_HIDE$4 = "hide" + EVENT_KEY$a;
var EVENT_HIDDEN$4 = "hidden" + EVENT_KEY$a;
var EVENT_SHOW$4 = "show" + EVENT_KEY$a;
var EVENT_SHOWN$4 = "shown" + EVENT_KEY$a;
var CLASS_NAME_FADE$5 = 'fade';
var CLASS_NAME_HIDE = 'hide';
var CLASS_NAME_SHOW$7 = 'show';
var CLASS_NAME_SHOWING = 'showing';
var DefaultType$7 = {
  animation: 'boolean',
  autohide: 'boolean',
  delay: 'number'
};
var Default$7 = {
  animation: true,
  autohide: true,
  delay: 500
};
var SELECTOR_DATA_DISMISS$1 = '[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;

    var showEvent = $.Event(EVENT_SHOW$4);
    $(this._element).trigger(showEvent);

    if (showEvent.isDefaultPrevented()) {
      return;
    }

    if (this._config.animation) {
      this._element.classList.add(CLASS_NAME_FADE$5);
    }

    var complete = function complete() {
      _this._element.classList.remove(CLASS_NAME_SHOWING);

      _this._element.classList.add(CLASS_NAME_SHOW$7);

      $(_this._element).trigger(EVENT_SHOWN$4);

      if (_this._config.autohide) {
        _this._timeout = setTimeout(function () {
          _this.hide();
        }, _this._config.delay);
      }
    };

    this._element.classList.remove(CLASS_NAME_HIDE);

    Util.reflow(this._element);

    this._element.classList.add(CLASS_NAME_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() {
    if (!this._element.classList.contains(CLASS_NAME_SHOW$7)) {
      return;
    }

    var hideEvent = $.Event(EVENT_HIDE$4);
    $(this._element).trigger(hideEvent);

    if (hideEvent.isDefaultPrevented()) {
      return;
    }

    this._close();
  };

  _proto.dispose = function dispose() {
    clearTimeout(this._timeout);
    this._timeout = null;

    if (this._element.classList.contains(CLASS_NAME_SHOW$7)) {
      this._element.classList.remove(CLASS_NAME_SHOW$7);
    }

    $(this._element).off(EVENT_CLICK_DISMISS$1);
    $.removeData(this._element, DATA_KEY$a);
    this._element = null;
    this._config = null;
  } // Private
  ;

  _proto._getConfig = function _getConfig(config) {
    config = _objectSpread2(_objectSpread2(_objectSpread2({}, 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 _this2 = this;

    $(this._element).on(EVENT_CLICK_DISMISS$1, SELECTOR_DATA_DISMISS$1, function () {
      return _this2.hide();
    });
  };

  _proto._close = function _close() {
    var _this3 = this;

    var complete = function complete() {
      _this3._element.classList.add(CLASS_NAME_HIDE);

      $(_this3._element).trigger(EVENT_HIDDEN$4);
    };

    this._element.classList.remove(CLASS_NAME_SHOW$7);

    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;
};

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;
exports.Util = Util;

Object.defineProperty(exports, '__esModule', { value: true });

}))); //# sourceMappingURL=bootstrap.bundle.js.map