bootstrap.esm.js

var SelectorEngine = {
  matches: function matches(element, selector) {
    return element.matches(selector);
  },
  find: function find$1(selector, element) {
    var _ref;

    if (element === void 0) {
      element = document.documentElement;
    }

    return (_ref = []).concat.apply(_ref, find.call(element, selector));
  },
  findOne: function findOne$1(selector, element) {
    if (element === void 0) {
      element = document.documentElement;
    }

    return findOne.call(element, selector);
  },
  children: function children(element, selector) {
    var _ref2;

    var children = (_ref2 = []).concat.apply(_ref2, element.children);

    return children.filter(function (child) {
      return child.matches(selector);
    });
  },
  parents: function parents(element, selector) {
    var parents = [];
    var ancestor = element.parentNode;

    while (ancestor && ancestor.nodeType === Node.ELEMENT_NODE && ancestor.nodeType !== NODE_TEXT) {
      if (this.matches(ancestor, selector)) {
        parents.push(ancestor);
      }

      ancestor = ancestor.parentNode;
    }

    return parents;
  },
  prev: function prev(element, selector) {
    var previous = element.previousElementSibling;

    while (previous) {
      if (previous.matches(selector)) {
        return [previous];
      }

      previous = previous.previousElementSibling;
    }

    return [];
  },
  next: function next(element, selector) {
    var next = element.nextElementSibling;

    while (next) {
      if (this.matches(next, selector)) {
        return [next];
      }

      next = next.nextElementSibling;
    }

    return [];
  }
};

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

var NAME$2 = 'carousel';
var VERSION$2 = '5.0.0-alpha2';
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-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 = 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._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._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);

    if (this._element.classList.contains(CLASS_NAME_SLIDE)) {
      nextElement.classList.add(orderClassName);
      reflow(nextElement);
      activeElement.classList.add(directionalClassName);
      nextElement.classList.add(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 = 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-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));
  }
});
var $$3 = getjQuery();
/**
 * ------------------------------------------------------------------------
 * jQuery
 * ------------------------------------------------------------------------
 * add .carousel to jQuery only if jQuery is present
 */

/* istanbul ignore if */

if ($$3) {
  var JQUERY_NO_CONFLICT$2 = $$3.fn[NAME$2];
  $$3.fn[NAME$2] = Carousel.jQueryInterface;
  $$3.fn[NAME$2].Constructor = Carousel;

  $$3.fn[NAME$2].noConflict = function () {
    $$3.fn[NAME$2] = JQUERY_NO_CONFLICT$2;
    return Carousel.jQueryInterface;
  };
}

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

var NAME$3 = 'collapse';
var VERSION$3 = '5.0.0-alpha2';
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-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-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-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.filter(function (elem) {
        return container !== elem;
      });
      activesData = tempActiveData[0] ? Data.getData(tempActiveData[0], 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-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",