bootstrap.esm.js

      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$4.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(ClassName$3.COLLAPSE);

    this._element.classList.add(ClassName$3.COLLAPSING);

    this._element.style[dimension] = 0;

    if (this._triggerArray.length) {
      this._triggerArray.forEach(function (element) {
        element.classList.remove(ClassName$3.COLLAPSED);
        element.setAttribute('aria-expanded', true);
      });
    }

    this.setTransitioning(true);

    var complete = function complete() {
      _this._element.classList.remove(ClassName$3.COLLAPSING);

      _this._element.classList.add(ClassName$3.COLLAPSE);

      _this._element.classList.add(ClassName$3.SHOW);

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

      _this.setTransitioning(false);

      EventHandler.trigger(_this._element, Event$4.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(ClassName$3.SHOW)) {
      return;
    }

    var startEvent = EventHandler.trigger(this._element, Event$4.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(ClassName$3.COLLAPSING);

    this._element.classList.remove(ClassName$3.COLLAPSE);

    this._element.classList.remove(ClassName$3.SHOW);

    var triggerArrayLength = this._triggerArray.length;

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

        if (selector !== null) {
          var elem = SelectorEngine.findOne(selector);

          if (!elem.classList.contains(ClassName$3.SHOW)) {
            trigger.classList.add(ClassName$3.COLLAPSED);
            trigger.setAttribute('aria-expanded', false);
          }
        }
      }
    }

    this.setTransitioning(true);

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

      _this2._element.classList.remove(ClassName$3.COLLAPSING);

      _this2._element.classList.add(ClassName$3.COLLAPSE);

      EventHandler.trigger(_this2._element, Event$4.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 = _objectSpread({}, Default$1, config);
    config.toggle = Boolean(config.toggle); // Coerce string values

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

  _proto._getDimension = function _getDimension() {
    var hasWidth = this._element.classList.contains(Dimension.WIDTH);

    return hasWidth ? Dimension.WIDTH : Dimension.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 = "[data-toggle=\"collapse\"][data-parent=\"" + parent + "\"]";
    makeArray(SelectorEngine.find(selector, parent)).forEach(function (element) {
      _this3._addAriaAndCollapsedClass(Collapse._getTargetFromElement(element), [element]);
    });
    return parent;
  };

  _proto._addAriaAndCollapsedClass = function _addAriaAndCollapsedClass(element, triggerArray) {
    if (element) {
      var isOpen = element.classList.contains(ClassName$3.SHOW);

      if (triggerArray.length) {
        triggerArray.forEach(function (elem) {
          if (isOpen) {
            elem.classList.remove(ClassName$3.COLLAPSED);
          } else {
            elem.classList.add(ClassName$3.COLLAPSED);
          }

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

  Collapse._getTargetFromElement = function _getTargetFromElement(element) {
    var selector = getSelectorFromElement(element);
    return selector ? SelectorEngine.findOne(selector) : null;
  };

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

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

    if (!data && _config.toggle && /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$4.CLICK_DATA_API, Selector$3.DATA_TOGGLE, function (event) {
  // preventDefault only for <a> elements (which change the URL) not inside the collapsible element
  if (event.target.tagName === 'A') {
    event.preventDefault();
  }

  var triggerData = Manipulator.getDataAttributes(this);
  var selector = getSelectorFromElement(this);
  var selectorElements = makeArray(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
 */

if (typeof jQuery !== 'undefined') {
  var JQUERY_NO_CONFLICT$3 = jQuery.fn[NAME$3];
  jQuery.fn[NAME$3] = Collapse._jQueryInterface;
  jQuery.fn[NAME$3].Constructor = Collapse;

  jQuery.fn[NAME$3].noConflict = function () {
    jQuery.fn[NAME$3] = JQUERY_NO_CONFLICT$3;
    return Collapse._jQueryInterface;
  };
}

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

var NAME$4 = 'dropdown';
var VERSION$4 = '4.3.1';
var DATA_KEY$4 = 'bs.dropdown';
var EVENT_KEY$4 = "." + DATA_KEY$4;
var DATA_API_KEY$4 = '.data-api';
var 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$5 = {
  HIDE: "hide" + EVENT_KEY$4,
  HIDDEN: "hidden" + EVENT_KEY$4,
  SHOW: "show" + EVENT_KEY$4,
  SHOWN: "shown" + EVENT_KEY$4,
  CLICK: "click" + EVENT_KEY$4,
  CLICK_DATA_API: "click" + EVENT_KEY$4 + DATA_API_KEY$4,
  KEYDOWN_DATA_API: "keydown" + EVENT_KEY$4 + DATA_API_KEY$4,
  KEYUP_DATA_API: "keyup" + EVENT_KEY$4 + DATA_API_KEY$4
};
var ClassName$4 = {
  DISABLED: 'disabled',
  SHOW: 'show',
  DROPUP: 'dropup',
  DROPRIGHT: 'dropright',
  DROPLEFT: 'dropleft',
  MENURIGHT: 'dropdown-menu-right',
  POSITION_STATIC: 'position-static'
};
var Selector$4 = {
  DATA_TOGGLE: '[data-toggle="dropdown"]',
  FORM_CHILD: '.dropdown form',
  MENU: '.dropdown-menu',
  NAVBAR_NAV: '.navbar-nav',
  VISIBLE_ITEMS: '.dropdown-menu .dropdown-item:not(.disabled):not(:disabled)'
};
var AttachmentMap = {
  TOP: 'top-start',
  TOPEND: 'top-end',
  BOTTOM: 'bottom-start',
  BOTTOMEND: 'bottom-end',
  RIGHT: 'right-start',
  RIGHTEND: 'right-end',
  LEFT: 'left-start',
  LEFTEND: 'left-end'
};
var Default$2 = {
  offset: 0,
  flip: true,
  boundary: 'scrollParent',
  reference: 'toggle',
  display: 'dynamic'
};
var DefaultType$2 = {
  offset: '(number|string|function)',
  flip: 'boolean',
  boundary: '(string|element)',
  reference: '(string|element)',
  display: 'string'
  /**
   * ------------------------------------------------------------------------
   * Class Definition
   * ------------------------------------------------------------------------
   */

};

var Dropdown =
/*#__PURE__*/
function () {
  function Dropdown(element, config) {
    this._element = element;
    this._popper = null;
    this._config = this._getConfig(config);
    this._menu = this._getMenuElement();
    this._inNavbar = this._detectNavbar();

    this._addEventListeners();

    Data.setData(element, DATA_KEY$4, this);
  } // Getters


  var _proto = Dropdown.prototype;

  // Public
  _proto.toggle = function toggle() {
    if (this._element.disabled || this._element.classList.contains(ClassName$4.DISABLED)) {
      return;
    }

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

    var isActive = this._menu.classList.contains(ClassName$4.SHOW);

    Dropdown._clearMenus();

    if (isActive) {
      return;
    }

    var relatedTarget = {
      relatedTarget: this._element
    };
    var showEvent = EventHandler.trigger(parent, Event$5.SHOW, relatedTarget);

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


    if (!this._inNavbar) {
      /**
       * Check for Popper dependency
       * Popper - https://popper.js.org
       */
      if (typeof Popper === 'undefined') {
        throw new TypeError('Bootstrap\'s dropdowns require Popper.js (https://popper.js.org)');
      }

      var referenceElement = this._element;

      if (this._config.reference === 'parent') {
        referenceElement = parent;
      } else if (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.classList.add(ClassName$4.POSITION_STATIC);
      }

      this._popper = new Popper(referenceElement, this._menu, this._getPopperConfig());
    } // If this is a touch-enabled device we add extra
    // empty mouseover listeners to the body's immediate children;
    // only needed because of broken event delegation on iOS
    // https://www.quirksmode.org/blog/archives/2014/02/mouse_event_bub.html


    if ('ontouchstart' in document.documentElement && !makeArray(SelectorEngine.closest(parent, Selector$4.NAVBAR_NAV)).length) {
      makeArray(document.body.children).forEach(function (elem) {
        return EventHandler.on(elem, 'mouseover', null, noop());
      });
    }

    this._element.focus();

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

    Manipulator.toggleClass(this._menu, ClassName$4.SHOW);
    Manipulator.toggleClass(parent, ClassName$4.SHOW);
    EventHandler.trigger(parent, Event$5.SHOWN, relatedTarget);
  };

  _proto.show = function show() {
    if (this._element.disabled || this._element.classList.contains(ClassName$4.DISABLED) || this._menu.classList.contains(ClassName$4.SHOW)) {
      return;
    }

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

    var relatedTarget = {
      relatedTarget: this._element
    };
    var showEvent = EventHandler.trigger(parent, Event$5.SHOW, relatedTarget);

    if (showEvent.defaultPrevented) {
      return;
    }

    Manipulator.toggleClass(this._menu, ClassName$4.SHOW);
    Manipulator.toggleClass(parent, ClassName$4.SHOW);
    EventHandler.trigger(parent, Event$5.SHOWN, relatedTarget);
  };

  _proto.hide = function hide() {
    if (this._element.disabled || this._element.classList.contains(ClassName$4.DISABLED) || !this._menu.classList.contains(ClassName$4.SHOW)) {
      return;
    }

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

    var relatedTarget = {
      relatedTarget: this._element
    };
    var hideEvent = EventHandler.trigger(parent, Event$5.HIDE, relatedTarget);

    if (hideEvent.defaultPrevented) {
      return;
    }

    Manipulator.toggleClass(this._menu, ClassName$4.SHOW);
    Manipulator.toggleClass(parent, ClassName$4.SHOW);
    EventHandler.trigger(parent, Event$5.HIDDEN, relatedTarget);
  };

  _proto.dispose = function dispose() {
    Data.removeData(this._element, DATA_KEY$4);
    EventHandler.off(this._element, 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;

    EventHandler.on(this._element, Event$5.CLICK, function (event) {
      event.preventDefault();
      event.stopPropagation();

      _this.toggle();
    });
  };

  _proto._getConfig = function _getConfig(config) {
    config = _objectSpread({}, this.constructor.Default, Manipulator.getDataAttributes(this._element), config);
    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 = SelectorEngine.findOne(Selector$4.MENU, parent);
      }
    }

    return this._menu;
  };

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

    if (parentDropdown.classList.contains(ClassName$4.DROPUP)) {
      placement = AttachmentMap.TOP;

      if (this._menu.classList.contains(ClassName$4.MENURIGHT)) {
        placement = AttachmentMap.TOPEND;
      }
    } else if (parentDropdown.classList.contains(ClassName$4.DROPRIGHT)) {
      placement = AttachmentMap.RIGHT;
    } else if (parentDropdown.classList.contains(ClassName$4.DROPLEFT)) {
      placement = AttachmentMap.LEFT;
    } else if (this._menu.classList.contains(ClassName$4.MENURIGHT)) {
      placement = AttachmentMap.BOTTOMEND;
    }

    return placement;
  };

  _proto._detectNavbar = function _detectNavbar() {
    return Boolean(SelectorEngine.closest(this._element, '.navbar'));
  };

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

    var offset = {};

    if (typeof this._config.offset === 'function') {
      offset.fn = function (data) {
        data.offsets = _objectSpread({}, data.offsets, _this2._config.offset(data.offsets, _this2._element) || {});
        return data;
      };
    } else {
      offset.offset = this._config.offset;
    }

    return offset;
  };

  _proto._getPopperConfig = function _getPopperConfig() {
    var popperConfig = {
      placement: this._getPlacement(),
      modifiers: {
        offset: this._getOffset(),
        flip: {
          enabled: this._config.flip
        },
        preventOverflow: {
          boundariesElement: this._config.boundary
        }
      } // Disable Popper.js if we have a static display

    };

    if (this._config.display === 'static') {
      popperConfig.modifiers.applyStyle = {
        enabled: false
      };
    }

    return popperConfig;
  } // Static
  ;

  Dropdown._dropdownInterface = function _dropdownInterface(element, config) {
    var data = Data.getData(element, DATA_KEY$4);

    var _config = typeof config === 'object' ? config : null;

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

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

      data[config]();
    }
  };

  Dropdown._jQueryInterface = function _jQueryInterface(config) {
    return this.each(function () {
      Dropdown._dropdownInterface(this, config);
    });
  };

  Dropdown._clearMenus = function _clearMenus(event) {
    if (event && (event.which === RIGHT_MOUSE_BUTTON_WHICH || event.type === 'keyup' && event.which !== TAB_KEYCODE)) {
      return;
    }

    var toggles = makeArray(SelectorEngine.find(Selector$4.DATA_TOGGLE));

    for (var i = 0, len = toggles.length; i < len; i++) {
      var parent = Dropdown._getParentFromElement(toggles[i]);

      var context = Data.getData(toggles[i], 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.classList.contains(ClassName$4.SHOW)) {
        continue;
      }

      if (event && (event.type === 'click' && /input|textarea/i.test(event.target.tagName) || event.type === 'keyup' && event.which === TAB_KEYCODE) && parent.contains(event.target)) {
        continue;
      }

      var hideEvent = EventHandler.trigger(parent, Event$5.HIDE, relatedTarget);

      if (hideEvent.defaultPrevented) {
        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) {
        makeArray(document.body.children).forEach(function (elem) {
          return EventHandler.off(elem, 'mouseover', null, noop());
        });
      }

      toggles[i].setAttribute('aria-expanded', 'false');
      dropdownMenu.classList.remove(ClassName$4.SHOW);
      parent.classList.remove(ClassName$4.SHOW);
      EventHandler.trigger(parent, Event$5.HIDDEN, relatedTarget);
    }
  };

  Dropdown._getParentFromElement = function _getParentFromElement(element) {
    var parent;
    var selector = getSelectorFromElement(element);

    if (selector) {
      parent = SelectorEngine.findOne(selector);
    }

    return parent || element.parentNode;
  };

  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 || SelectorEngine.closest(event.target, Selector$4.MENU)) : !REGEXP_KEYDOWN.test(event.which)) {
      return;
    }

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

    if (this.disabled || this.classList.contains(ClassName$4.DISABLED)) {
      return;
    }

    var parent = Dropdown._getParentFromElement(this);

    var isActive = parent.classList.contains(ClassName$4.SHOW);

    if (!isActive || isActive && (event.which === ESCAPE_KEYCODE || event.which === SPACE_KEYCODE)) {
      if (event.which === ESCAPE_KEYCODE) {
        EventHandler.trigger(SelectorEngine.findOne(Selector$4.DATA_TOGGLE, parent), 'focus');
      }

      Dropdown._clearMenus();

      return;
    }

    var items = makeArray(SelectorEngine.find(Selector$4.VISIBLE_ITEMS, parent));

    if (!items.length) {
      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();
  };

  Dropdown._getInstance = function _getInstance(element) {
    return Data.getData(element, DATA_KEY$4);
  };

  _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
 * ------------------------------------------------------------------------
 */


EventHandler.on(document, Event$5.KEYDOWN_DATA_API, Selector$4.DATA_TOGGLE, Dropdown._dataApiKeydownHandler);
EventHandler.on(document, Event$5.KEYDOWN_DATA_API, Selector$4.MENU, Dropdown._dataApiKeydownHandler);
EventHandler.on(document, Event$5.CLICK_DATA_API, Dropdown._clearMenus);
EventHandler.on(document, Event$5.KEYUP_DATA_API, Dropdown._clearMenus);
EventHandler.on(document, Event$5.CLICK_DATA_API, Selector$4.DATA_TOGGLE, function (event) {
  event.preventDefault();
  event.stopPropagation();

  Dropdown._dropdownInterface(this, 'toggle');
});
EventHandler.on(document, Event$5.CLICK_DATA_API, Selector$4.FORM_CHILD, function (e) {
  return e.stopPropagation();
});
/**
 * ------------------------------------------------------------------------
 * jQuery
 * ------------------------------------------------------------------------
 * add .dropdown to jQuery only if jQuery is present
 */

if (typeof jQuery !== 'undefined') {
  var JQUERY_NO_CONFLICT$4 = jQuery.fn[NAME$4];
  jQuery.fn[NAME$4] = Dropdown._jQueryInterface;
  jQuery.fn[NAME$4].Constructor = Dropdown;

  jQuery.fn[NAME$4].noConflict = function () {
    jQuery.fn[NAME$4] = JQUERY_NO_CONFLICT$4;
    return Dropdown._jQueryInterface;
  };
}

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

var NAME$5 = 'modal';
var VERSION$5 = '4.3.1';
var DATA_KEY$5 = 'bs.modal';
var EVENT_KEY$5 = "." + DATA_KEY$5;
var DATA_API_KEY$5 = '.data-api';
var 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$6 = {
  HIDE: "hide" + EVENT_KEY$5,
  HIDDEN: "hidden" + EVENT_KEY$5,
  SHOW: "show" + EVENT_KEY$5,
  SHOWN: "shown" + EVENT_KEY$5,
  FOCUSIN: "focusin" + EVENT_KEY$5,
  RESIZE: "resize" + EVENT_KEY$5,
  CLICK_DISMISS: "click.dismiss" + EVENT_KEY$5,
  KEYDOWN_DISMISS: "keydown.dismiss" + EVENT_KEY$5,
  MOUSEUP_DISMISS: "mouseup.dismiss" + EVENT_KEY$5,
  MOUSEDOWN_DISMISS: "mousedown.dismiss" + EVENT_KEY$5,
  CLICK_DATA_API: "click" + EVENT_KEY$5 + DATA_API_KEY$5
};
var ClassName$5 = {
  SCROLLABLE: 'modal-dialog-scrollable',
  SCROLLBAR_MEASURER: 'modal-scrollbar-measure',
  BACKDROP: 'modal-backdrop',
  OPEN: 'modal-open',
  FADE: 'fade',
  SHOW: 'show'
};
var Selector$5 = {
  DIALOG: '.modal-dialog',
  MODAL_BODY: '.modal-body',
  DATA_TOGGLE: '[data-toggle="modal"]',
  DATA_DISMISS: '[data-dismiss="modal"]',
  FIXED_CONTENT: '.fixed-top, .fixed-bottom, .is-fixed, .sticky-top',
  STICKY_CONTENT: '.sticky-top'
  /**
   * ------------------------------------------------------------------------
   * Class Definition
   * ------------------------------------------------------------------------
   */

};

var Modal =
/*#__PURE__*/
function () {
  function Modal(element, config) {
    this._config = this._getConfig(config);
    this._element = element;
    this._dialog = SelectorEngine.findOne(Selector$5.DIALOG, element);
    this._backdrop = null;
    this._isShown = false;
    this._isBodyOverflowing = false;
    this._ignoreBackdropClick = false;
    this._isTransitioning = false;
    this._scrollbarWidth = 0;
    Data.setData(element, DATA_KEY$5, this);
  } // 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.classList.contains(ClassName$5.FADE)) {
      this._isTransitioning = true;
    }

    var showEvent = EventHandler.trigger(this._element, Event$6.SHOW, {
      relatedTarget: relatedTarget
    });

    if (this._isShown || showEvent.defaultPrevented) {
      return;
    }

    this._isShown = true;

    this._checkScrollbar();

    this._setScrollbar();

    this._adjustDialog();

    this._setEscapeEvent();

    this._setResizeEvent();

    EventHandler.on(this._element, Event$6.CLICK_DISMISS, Selector$5.DATA_DISMISS, function (event) {
      return _this.hide(event);
    });
    EventHandler.on(this._dialog, Event$6.MOUSEDOWN_DISMISS, function () {
      EventHandler.one(_this._element, Event$6.MOUSEUP_DISMISS, function (event) {
        if (event.target === _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 = EventHandler.trigger(this._element, Event$6.HIDE);

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

    this._isShown = false;

    var transition = this._element.classList.contains(ClassName$5.FADE);

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

    this._setEscapeEvent();