bootstrap.js

    }
  };

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

  var NAME$2 = 'carousel';
  var VERSION$2 = '5.0.0-alpha3';
  var DATA_KEY$2 = 'bs.carousel';
  var EVENT_KEY$2 = "." + DATA_KEY$2;
  var DATA_API_KEY$2 = '.data-api';
  var ARROW_LEFT_KEY = 'ArrowLeft';
  var ARROW_RIGHT_KEY = 'ArrowRight';
  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 = "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 = '.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-bs-slide], [data-bs-slide-to]';
  var SELECTOR_DATA_RIDE = '[data-bs-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 = SelectorEngine.findOne(SELECTOR_INDICATORS, this._element);
      this._touchSupported = 'ontouchstart' in document.documentElement || navigator.maxTouchPoints > 0;
      this._pointerEvent = Boolean(window.PointerEvent);

      this._addEventListeners();

      Data.setData(element, DATA_KEY$2, this);
    } // 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 && isVisible(this._element)) {
        this.next();
      }
    };

    _proto.prev = function prev() {
      if (!this._isSliding) {
        this._slide(DIRECTION_PREV);
      }
    };

    _proto.pause = function pause(event) {
      if (!event) {
        this._isPaused = true;
      }

      if (SelectorEngine.findOne(SELECTOR_NEXT_PREV, this._element)) {
        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 && this._config.interval && !this._isPaused) {
        this._updateInterval();

        this._interval = setInterval((document.visibilityState ? this.nextWhenVisible : this.next).bind(this), this._config.interval);
      }
    };

    _proto.to = function to(index) {
      var _this = this;

      this._activeElement = SelectorEngine.findOne(SELECTOR_ACTIVE_ITEM, this._element);

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

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

      if (this._isSliding) {
        EventHandler.one(this._element, 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() {
      EventHandler.off(this._element, EVENT_KEY$2);
      Data.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 = _extends({}, Default, config);
      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) {
        EventHandler.on(this._element, EVENT_KEYDOWN, function (event) {
          return _this2._keydown(event);
        });
      }

      if (this._config.pause === 'hover') {
        EventHandler.on(this._element, EVENT_MOUSEENTER, function (event) {
          return _this2.pause(event);
        });
        EventHandler.on(this._element, EVENT_MOUSELEAVE, function (event) {
          return _this2.cycle(event);
        });
      }

      if (this._config.touch && this._touchSupported) {
        this._addTouchEventListeners();
      }
    };

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

      var start = function start(event) {
        if (_this3._pointerEvent && PointerType[event.pointerType.toUpperCase()]) {
          _this3.touchStartX = event.clientX;
        } else if (!_this3._pointerEvent) {
          _this3.touchStartX = event.touches[0].clientX;
        }
      };

      var move = function move(event) {
        // ensure swiping with one touch and not pinching
        if (event.touches && event.touches.length > 1) {
          _this3.touchDeltaX = 0;
        } else {
          _this3.touchDeltaX = event.touches[0].clientX - _this3.touchStartX;
        }
      };

      var end = function end(event) {
        if (_this3._pointerEvent && PointerType[event.pointerType.toUpperCase()]) {
          _this3.touchDeltaX = event.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);
        }
      };

      SelectorEngine.find(SELECTOR_ITEM_IMG, this._element).forEach(function (itemImg) {
        EventHandler.on(itemImg, EVENT_DRAG_START, function (e) {
          return e.preventDefault();
        });
      });

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

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

    _proto._keydown = function _keydown(event) {
      if (/input|textarea/i.test(event.target.tagName)) {
        return;
      }

      switch (event.key) {
        case ARROW_LEFT_KEY:
          event.preventDefault();
          this.prev();
          break;

        case ARROW_RIGHT_KEY:
          event.preventDefault();
          this.next();
          break;
      }
    };

    _proto._getItemIndex = function _getItemIndex(element) {
      this._items = element && element.parentNode ? SelectorEngine.find(SELECTOR_ITEM, element.parentNode) : [];
      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(SelectorEngine.findOne(SELECTOR_ACTIVE_ITEM, this._element));

      return EventHandler.trigger(this._element, EVENT_SLIDE, {
        relatedTarget: relatedTarget,
        direction: eventDirectionName,
        from: fromIndex,
        to: targetIndex
      });
    };

    _proto._setActiveIndicatorElement = function _setActiveIndicatorElement(element) {
      if (this._indicatorsElement) {
        var indicators = SelectorEngine.find(SELECTOR_ACTIVE, this._indicatorsElement);

        for (var i = 0; i < indicators.length; i++) {
          indicators[i].classList.remove(CLASS_NAME_ACTIVE$1);
        }

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

        if (nextIndicator) {
          nextIndicator.classList.add(CLASS_NAME_ACTIVE$1);
        }
      }
    };

    _proto._updateInterval = function _updateInterval() {
      var element = this._activeElement || SelectorEngine.findOne(SELECTOR_ACTIVE_ITEM, this._element);

      if (!element) {
        return;
      }

      var elementInterval = Number.parseInt(element.getAttribute('data-bs-interval'), 10);

      if (elementInterval) {
        this._config.defaultInterval = this._config.defaultInterval || this._config.interval;
        this._config.interval = elementInterval;
      } else {
        this._config.interval = this._config.defaultInterval || this._config.interval;
      }
    };

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

      var activeElement = SelectorEngine.findOne(SELECTOR_ACTIVE_ITEM, this._element);

      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.classList.contains(CLASS_NAME_ACTIVE$1)) {
        this._isSliding = false;
        return;
      }

      var slideEvent = this._triggerSlideEvent(nextElement, eventDirectionName);

      if (slideEvent.defaultPrevented) {
        return;
      }

      if (!activeElement || !nextElement) {
        // Some weirdness is happening, so we bail
        return;
      }

      this._isSliding = true;

      if (isCycling) {
        this.pause();
      }

      this._setActiveIndicatorElement(nextElement);

      this._activeElement = nextElement;

      if (this._element.classList.contains(CLASS_NAME_SLIDE)) {
        nextElement.classList.add(orderClassName);
        reflow(nextElement);
        activeElement.classList.add(directionalClassName);
        nextElement.classList.add(directionalClassName);
        var transitionDuration = getTransitionDurationFromElement(activeElement);
        EventHandler.one(activeElement, TRANSITION_END, function () {
          nextElement.classList.remove(directionalClassName, orderClassName);
          nextElement.classList.add(CLASS_NAME_ACTIVE$1);
          activeElement.classList.remove(CLASS_NAME_ACTIVE$1, orderClassName, directionalClassName);
          _this4._isSliding = false;
          setTimeout(function () {
            EventHandler.trigger(_this4._element, EVENT_SLID, {
              relatedTarget: nextElement,
              direction: eventDirectionName,
              from: activeElementIndex,
              to: nextElementIndex
            });
          }, 0);
        });
        emulateTransitionEnd(activeElement, transitionDuration);
      } else {
        activeElement.classList.remove(CLASS_NAME_ACTIVE$1);
        nextElement.classList.add(CLASS_NAME_ACTIVE$1);
        this._isSliding = false;
        EventHandler.trigger(this._element, EVENT_SLID, {
          relatedTarget: nextElement,
          direction: eventDirectionName,
          from: activeElementIndex,
          to: nextElementIndex
        });
      }

      if (isCycling) {
        this.cycle();
      }
    } // Static
    ;

    Carousel.carouselInterface = function carouselInterface(element, config) {
      var data = Data.getData(element, DATA_KEY$2);

      var _config = _extends({}, Default, Manipulator.getDataAttributes(element));

      if (typeof config === 'object') {
        _config = _extends({}, _config, config);
      }

      var action = typeof config === 'string' ? config : _config.slide;

      if (!data) {
        data = new Carousel(element, _config);
      }

      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.jQueryInterface = function jQueryInterface(config) {
      return this.each(function () {
        Carousel.carouselInterface(this, config);
      });
    };

    Carousel.dataApiClickHandler = function dataApiClickHandler(event) {
      var target = getElementFromSelector(this);

      if (!target || !target.classList.contains(CLASS_NAME_CAROUSEL)) {
        return;
      }

      var config = _extends({}, Manipulator.getDataAttributes(target), Manipulator.getDataAttributes(this));

      var slideIndex = this.getAttribute('data-bs-slide-to');

      if (slideIndex) {
        config.interval = false;
      }

      Carousel.carouselInterface(target, config);

      if (slideIndex) {
        Data.getData(target, DATA_KEY$2).to(slideIndex);
      }

      event.preventDefault();
    };

    Carousel.getInstance = function getInstance(element) {
      return Data.getData(element, DATA_KEY$2);
    };

    _createClass(Carousel, null, [{
      key: "VERSION",
      get: function get() {
        return VERSION$2;
      }
    }, {
      key: "Default",
      get: function get() {
        return Default;
      }
    }]);

    return Carousel;
  }();
  /**
   * ------------------------------------------------------------------------
   * Data Api implementation
   * ------------------------------------------------------------------------
   */


  EventHandler.on(document, EVENT_CLICK_DATA_API$2, SELECTOR_DATA_SLIDE, Carousel.dataApiClickHandler);
  EventHandler.on(window, EVENT_LOAD_DATA_API, function () {
    var carousels = SelectorEngine.find(SELECTOR_DATA_RIDE);

    for (var i = 0, len = carousels.length; i < len; i++) {
      Carousel.carouselInterface(carousels[i], Data.getData(carousels[i], DATA_KEY$2));
    }
  });
  /**
   * ------------------------------------------------------------------------
   * jQuery
   * ------------------------------------------------------------------------
   * add .Carousel to jQuery only if jQuery is present
   */

  onDOMContentLoaded(function () {
    var $ = getjQuery();
    /* istanbul ignore if */

    if ($) {
      var JQUERY_NO_CONFLICT = $.fn[NAME$2];
      $.fn[NAME$2] = Carousel.jQueryInterface;
      $.fn[NAME$2].Constructor = Carousel;

      $.fn[NAME$2].noConflict = function () {
        $.fn[NAME$2] = JQUERY_NO_CONFLICT;
        return Carousel.jQueryInterface;
      };
    }
  });

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

  var NAME$3 = 'collapse';
  var VERSION$3 = '5.0.0-alpha3';
  var DATA_KEY$3 = 'bs.collapse';
  var EVENT_KEY$3 = "." + DATA_KEY$3;
  var DATA_API_KEY$3 = '.data-api';
  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 = 'show';
  var CLASS_NAME_COLLAPSE = 'collapse';
  var CLASS_NAME_COLLAPSING = 'collapsing';
  var CLASS_NAME_COLLAPSED = 'collapsed';
  var WIDTH = 'width';
  var HEIGHT = 'height';
  var SELECTOR_ACTIVES = '.show, .collapsing';
  var SELECTOR_DATA_TOGGLE$1 = '[data-bs-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 = SelectorEngine.find(SELECTOR_DATA_TOGGLE$1 + "[href=\"#" + element.id + "\"]," + (SELECTOR_DATA_TOGGLE$1 + "[data-bs-target=\"#" + element.id + "\"]"));
      var toggleList = SelectorEngine.find(SELECTOR_DATA_TOGGLE$1);

      for (var i = 0, len = toggleList.length; i < len; i++) {
        var elem = toggleList[i];
        var selector = getSelectorFromElement(elem);
        var filterElement = SelectorEngine.find(selector).filter(function (foundElem) {
          return foundElem === element;
        });

        if (selector !== null && filterElement.length) {
          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();
      }

      Data.setData(element, DATA_KEY$3, this);
    } // Getters


    var _proto = Collapse.prototype;

    // Public
    _proto.toggle = function toggle() {
      if (this._element.classList.contains(CLASS_NAME_SHOW)) {
        this.hide();
      } else {
        this.show();
      }
    };

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

      if (this._isTransitioning || this._element.classList.contains(CLASS_NAME_SHOW)) {
        return;
      }

      var actives;
      var activesData;

      if (this._parent) {
        actives = SelectorEngine.find(SELECTOR_ACTIVES, this._parent).filter(function (elem) {
          if (typeof _this._config.parent === 'string') {
            return elem.getAttribute('data-bs-parent') === _this._config.parent;
          }

          return elem.classList.contains(CLASS_NAME_COLLAPSE);
        });

        if (actives.length === 0) {
          actives = null;
        }
      }

      var container = SelectorEngine.findOne(this._selector);

      if (actives) {
        var tempActiveData = actives.find(function (elem) {
          return container !== elem;
        });
        activesData = tempActiveData ? Data.getData(tempActiveData, DATA_KEY$3) : null;

        if (activesData && activesData._isTransitioning) {
          return;
        }
      }

      var startEvent = EventHandler.trigger(this._element, EVENT_SHOW);

      if (startEvent.defaultPrevented) {
        return;
      }

      if (actives) {
        actives.forEach(function (elemActive) {
          if (container !== elemActive) {
            Collapse.collapseInterface(elemActive, 'hide');
          }

          if (!activesData) {
            Data.setData(elemActive, DATA_KEY$3, null);
          }
        });
      }

      var dimension = this._getDimension();

      this._element.classList.remove(CLASS_NAME_COLLAPSE);

      this._element.classList.add(CLASS_NAME_COLLAPSING);

      this._element.style[dimension] = 0;

      if (this._triggerArray.length) {
        this._triggerArray.forEach(function (element) {
          element.classList.remove(CLASS_NAME_COLLAPSED);
          element.setAttribute('aria-expanded', true);
        });
      }

      this.setTransitioning(true);

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

        _this._element.classList.add(CLASS_NAME_COLLAPSE, CLASS_NAME_SHOW);

        _this._element.style[dimension] = '';

        _this.setTransitioning(false);

        EventHandler.trigger(_this._element, EVENT_SHOWN);
      };

      var capitalizedDimension = dimension[0].toUpperCase() + dimension.slice(1);
      var scrollSize = "scroll" + capitalizedDimension;
      var transitionDuration = getTransitionDurationFromElement(this._element);
      EventHandler.one(this._element, TRANSITION_END, complete);
      emulateTransitionEnd(this._element, transitionDuration);
      this._element.style[dimension] = this._element[scrollSize] + "px";
    };

    _proto.hide = function hide() {
      var _this2 = this;

      if (this._isTransitioning || !this._element.classList.contains(CLASS_NAME_SHOW)) {
        return;
      }

      var startEvent = EventHandler.trigger(this._element, EVENT_HIDE);

      if (startEvent.defaultPrevented) {
        return;
      }

      var dimension = this._getDimension();

      this._element.style[dimension] = this._element.getBoundingClientRect()[dimension] + "px";
      reflow(this._element);

      this._element.classList.add(CLASS_NAME_COLLAPSING);

      this._element.classList.remove(CLASS_NAME_COLLAPSE, CLASS_NAME_SHOW);

      var triggerArrayLength = this._triggerArray.length;

      if (triggerArrayLength > 0) {
        for (var i = 0; i < triggerArrayLength; i++) {
          var trigger = this._triggerArray[i];
          var elem = getElementFromSelector(trigger);

          if (elem && !elem.classList.contains(CLASS_NAME_SHOW)) {
            trigger.classList.add(CLASS_NAME_COLLAPSED);
            trigger.setAttribute('aria-expanded', false);
          }
        }
      }

      this.setTransitioning(true);

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

        _this2._element.classList.remove(CLASS_NAME_COLLAPSING);

        _this2._element.classList.add(CLASS_NAME_COLLAPSE);

        EventHandler.trigger(_this2._element, EVENT_HIDDEN);
      };

      this._element.style[dimension] = '';
      var transitionDuration = getTransitionDurationFromElement(this._element);
      EventHandler.one(this._element, TRANSITION_END, complete);
      emulateTransitionEnd(this._element, transitionDuration);
    };

    _proto.setTransitioning = function setTransitioning(isTransitioning) {
      this._isTransitioning = isTransitioning;
    };

    _proto.dispose = function dispose() {
      Data.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 = _extends({}, Default$1, config);
      config.toggle = Boolean(config.toggle); // Coerce string values

      typeCheckConfig(NAME$3, config, DefaultType$1);
      return config;
    };

    _proto._getDimension = function _getDimension() {
      return this._element.classList.contains(WIDTH) ? WIDTH : HEIGHT;
    };

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

      var parent = this._config.parent;

      if (isElement(parent)) {
        // it's a jQuery object
        if (typeof parent.jquery !== 'undefined' || typeof parent[0] !== 'undefined') {
          parent = parent[0];
        }
      } else {
        parent = SelectorEngine.findOne(parent);
      }

      var selector = SELECTOR_DATA_TOGGLE$1 + "[data-bs-parent=\"" + parent + "\"]";
      SelectorEngine.find(selector, parent).forEach(function (element) {
        var selected = getElementFromSelector(element);

        _this3._addAriaAndCollapsedClass(selected, [element]);
      });
      return parent;
    };

    _proto._addAriaAndCollapsedClass = function _addAriaAndCollapsedClass(element, triggerArray) {
      if (!element || !triggerArray.length) {
        return;
      }

      var isOpen = element.classList.contains(CLASS_NAME_SHOW);
      triggerArray.forEach(function (elem) {
        if (isOpen) {
          elem.classList.remove(CLASS_NAME_COLLAPSED);
        } else {
          elem.classList.add(CLASS_NAME_COLLAPSED);
        }

        elem.setAttribute('aria-expanded', isOpen);
      });
    } // Static
    ;

    Collapse.collapseInterface = function collapseInterface(element, config) {
      var data = Data.getData(element, DATA_KEY$3);

      var _config = _extends({}, Default$1, Manipulator.getDataAttributes(element), typeof config === 'object' && config ? config : {});

      if (!data && _config.toggle && typeof config === 'string' && /show|hide/.test(config)) {
        _config.toggle = false;
      }

      if (!data) {
        data = new Collapse(element, _config);
      }

      if (typeof config === 'string') {
        if (typeof data[config] === 'undefined') {
          throw new TypeError("No method named \"" + config + "\"");
        }

        data[config]();
      }
    };

    Collapse.jQueryInterface = function jQueryInterface(config) {
      return this.each(function () {
        Collapse.collapseInterface(this, config);
      });
    };

    Collapse.getInstance = function getInstance(element) {
      return Data.getData(element, DATA_KEY$3);
    };

    _createClass(Collapse, null, [{
      key: "VERSION",
      get: function get() {
        return VERSION$3;
      }
    }, {
      key: "Default",
      get: function get() {
        return Default$1;
      }
    }]);

    return Collapse;
  }();
  /**
   * ------------------------------------------------------------------------
   * Data Api implementation
   * ------------------------------------------------------------------------
   */


  EventHandler.on(document, 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.target.tagName === 'A') {
      event.preventDefault();
    }

    var triggerData = Manipulator.getDataAttributes(this);
    var selector = getSelectorFromElement(this);
    var selectorElements = SelectorEngine.find(selector);
    selectorElements.forEach(function (element) {
      var data = Data.getData(element, DATA_KEY$3);
      var config;

      if (data) {
        // update parent attribute
        if (data._parent === null && typeof triggerData.parent === 'string') {
          data._config.parent = triggerData.parent;
          data._parent = data._getParent();
        }

        config = 'toggle';
      } else {
        config = triggerData;
      }

      Collapse.collapseInterface(element, config);
    });
  });
  /**
   * ------------------------------------------------------------------------
   * jQuery
   * ------------------------------------------------------------------------
   * add .Collapse to jQuery only if jQuery is present
   */