bootstrap.js

/*!
  * Bootstrap v4.3.1 (https://getbootstrap.com/)
  * Copyright 2011-2019 The Bootstrap Authors (https://github.com/twbs/bootstrap/graphs/contributors)
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('popper.js')) :
  typeof define === 'function' && define.amd ? define(['exports', 'popper.js'], factory) :
  (global = global || self, factory(global.bootstrap = {}, global.Popper));
}(this, function (exports, Popper) { 'use strict';

  Popper = Popper && Popper.hasOwnProperty('default') ? Popper['default'] : Popper;

  function _defineProperties(target, props) {
    for (var i = 0; i < props.length; i++) {
      var descriptor = props[i];
      descriptor.enumerable = descriptor.enumerable || false;
      descriptor.configurable = true;
      if ("value" in descriptor) descriptor.writable = true;
      Object.defineProperty(target, descriptor.key, descriptor);
    }
  }

  function _createClass(Constructor, protoProps, staticProps) {
    if (protoProps) _defineProperties(Constructor.prototype, protoProps);
    if (staticProps) _defineProperties(Constructor, staticProps);
    return Constructor;
  }

  function _defineProperty(obj, key, value) {
    if (key in obj) {
      Object.defineProperty(obj, key, {
        value: value,
        enumerable: true,
        configurable: true,
        writable: true
      });
    } else {
      obj[key] = value;
    }

    return obj;
  }

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

      if (typeof Object.getOwnPropertySymbols === 'function') {
        ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) {
          return Object.getOwnPropertyDescriptor(source, sym).enumerable;
        }));
      }

      ownKeys.forEach(function (key) {
        _defineProperty(target, key, source[key]);
      });
    }

    return target;
  }

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

  /**
   * --------------------------------------------------------------------------
   * Bootstrap (v4.3.1): util/index.js
   * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
   * --------------------------------------------------------------------------
   */
  var MAX_UID = 1000000;
  var MILLISECONDS_MULTIPLIER = 1000;
  var TRANSITION_END = 'transitionend';
  var jQuery = window.jQuery; // Shoutout AngusCroll (https://goo.gl/pxwQGp)

  var toType = function toType(obj) {
    return {}.toString.call(obj).match(/\s([a-z]+)/i)[1].toLowerCase();
  };
  /**
   * --------------------------------------------------------------------------
   * Public Util Api
   * --------------------------------------------------------------------------
   */


  var 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;
  };

  var 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;
    }
  };

  var getTransitionDurationFromElement = function getTransitionDurationFromElement(element) {
    if (!element) {
      return 0;
    } // Get transition-duration of the element


    var _window$getComputedSt = window.getComputedStyle(element),
        transitionDuration = _window$getComputedSt.transitionDuration,
        transitionDelay = _window$getComputedSt.transitionDelay;

    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;
  };

  var triggerTransitionEnd = function triggerTransitionEnd(element) {
    element.dispatchEvent(new Event(TRANSITION_END));
  };

  var isElement = function isElement(obj) {
    return (obj[0] || obj).nodeType;
  };

  var emulateTransitionEnd = function emulateTransitionEnd(element, duration) {
    var called = false;
    var durationPadding = 5;
    var emulatedDuration = duration + durationPadding;

    function listener() {
      called = true;
      element.removeEventListener(TRANSITION_END, listener);
    }

    element.addEventListener(TRANSITION_END, listener);
    setTimeout(function () {
      if (!called) {
        triggerTransitionEnd(element);
      }
    }, emulatedDuration);
  };

  var typeCheckConfig = function typeCheckConfig(componentName, config, configTypes) {
    Object.keys(configTypes).forEach(function (property) {
      var expectedTypes = configTypes[property];
      var value = config[property];
      var valueType = value && 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 + "\"."));
      }
    });
  };

  var makeArray = function makeArray(nodeList) {
    if (!nodeList) {
      return [];
    }

    return [].slice.call(nodeList);
  };

  var isVisible = function isVisible(element) {
    if (!element) {
      return false;
    }

    if (element.style && element.parentNode && element.parentNode.style) {
      return element.style.display !== 'none' && element.parentNode.style.display !== 'none' && element.style.visibility !== 'hidden';
    }

    return false;
  };

  var 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 findShadowRoot(element.parentNode);
  }; // eslint-disable-next-line no-empty-function


  var noop = function noop() {
    return function () {};
  };

  var reflow = function reflow(element) {
    return element.offsetHeight;
  };

  /**
   * --------------------------------------------------------------------------
   * Bootstrap (v4.3.1): dom/data.js
   * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
   * --------------------------------------------------------------------------
   */

  /**
   * ------------------------------------------------------------------------
   * Constants
   * ------------------------------------------------------------------------
   */
  var mapData = function () {
    var storeData = {};
    var id = 1;
    return {
      set: function set(element, key, data) {
        if (typeof element.key === 'undefined') {
          element.key = {
            key: key,
            id: id
          };
          id++;
        }

        storeData[element.key.id] = data;
      },
      get: function get(element, key) {
        if (!element || typeof element.key === 'undefined') {
          return null;
        }

        var keyProperties = element.key;

        if (keyProperties.key === key) {
          return storeData[keyProperties.id];
        }

        return null;
      },
      delete: function _delete(element, key) {
        if (typeof element.key === 'undefined') {
          return;
        }

        var keyProperties = element.key;

        if (keyProperties.key === key) {
          delete storeData[keyProperties.id];
          delete element.key;
        }
      }
    };
  }();

  var Data = {
    setData: function setData(instance, key, data) {
      mapData.set(instance, key, data);
    },
    getData: function getData(instance, key) {
      return mapData.get(instance, key);
    },
    removeData: function removeData(instance, key) {
      mapData.delete(instance, key);
    }
  };

  /**
   * --------------------------------------------------------------------------
   * Bootstrap (v4.3.1): dom/polyfill.js
   * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
   * --------------------------------------------------------------------------
   */
  /* istanbul ignore next */

  var Polyfill = function () {
    // MSEdge resets defaultPrevented flag upon dispatchEvent call if at least one listener is attached
    var defaultPreventedPreservedOnDispatch = function () {
      var e = new CustomEvent('Bootstrap', {
        cancelable: true
      });
      var element = document.createElement('div');
      element.addEventListener('Bootstrap', function () {
        return null;
      });
      e.preventDefault();
      element.dispatchEvent(e);
      return e.defaultPrevented;
    }();

    var find = Element.prototype.querySelectorAll;
    var findOne = Element.prototype.querySelector;
    var scopeSelectorRegex = /:scope\b/;

    var supportScopeQuery = function () {
      var element = document.createElement('div');

      try {
        element.querySelectorAll(':scope *');
      } catch (e) {
        return false;
      }

      return true;
    }();

    if (!supportScopeQuery) {
      find = function find(selector) {
        if (!scopeSelectorRegex.test(selector)) {
          return this.querySelectorAll(selector);
        }

        var hasId = Boolean(this.id);

        if (!hasId) {
          this.id = getUID('scope');
        }

        var nodeList = null;

        try {
          selector = selector.replace(scopeSelectorRegex, "#" + this.id);
          nodeList = this.querySelectorAll(selector);
        } finally {
          if (!hasId) {
            this.removeAttribute('id');
          }
        }

        return nodeList;
      };

      findOne = function findOne(selector) {
        if (!scopeSelectorRegex.test(selector)) {
          return this.querySelector(selector);
        }

        var matches = find.call(this, selector);

        if (typeof matches[0] !== 'undefined') {
          return matches[0];
        }

        return null;
      };
    }

    return {
      defaultPreventedPreservedOnDispatch: defaultPreventedPreservedOnDispatch,
      find: find,
      findOne: findOne
    };
  }();

  /**
   * --------------------------------------------------------------------------
   * Bootstrap (v4.3.1): dom/eventHandler.js
   * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
   * --------------------------------------------------------------------------
   */
  /**
   * ------------------------------------------------------------------------
   * Constants
   * ------------------------------------------------------------------------
   */

  var namespaceRegex = /[^.]*(?=\..*)\.|.*/;
  var stripNameRegex = /\..*/;
  var keyEventRegex = /^key/;
  var stripUidRegex = /::\d+$/;
  var eventRegistry = {}; // Events storage

  var uidEvent = 1;
  var customEvents = {
    mouseenter: 'mouseover',
    mouseleave: 'mouseout'
  };
  var nativeEvents = ['click', 'dblclick', 'mouseup', 'mousedown', 'contextmenu', 'mousewheel', 'DOMMouseScroll', 'mouseover', 'mouseout', 'mousemove', 'selectstart', 'selectend', 'keydown', 'keypress', 'keyup', 'orientationchange', 'touchstart', 'touchmove', 'touchend', 'touchcancel', 'pointerdown', 'pointermove', 'pointerup', 'pointerleave', 'pointercancel', 'gesturestart', 'gesturechange', 'gestureend', 'focus', 'blur', 'change', 'reset', 'select', 'submit', 'focusin', 'focusout', 'load', 'unload', 'beforeunload', 'resize', 'move', 'DOMContentLoaded', 'readystatechange', 'error', 'abort', 'scroll'];
  /**
   * ------------------------------------------------------------------------
   * Private methods
   * ------------------------------------------------------------------------
   */

  function getUidEvent(element, uid) {
    return uid && uid + "::" + uidEvent++ || element.uidEvent || uidEvent++;
  }

  function getEvent(element) {
    var uid = getUidEvent(element);
    element.uidEvent = uid;
    return eventRegistry[uid] = eventRegistry[uid] || {};
  }

  function fixEvent(event, element) {
    // Add which for key events
    if (event.which === null && keyEventRegex.test(event.type)) {
      event.which = event.charCode !== null ? event.charCode : event.keyCode;
    }

    event.delegateTarget = element;
  }

  function bootstrapHandler(element, fn) {
    return function handler(event) {
      fixEvent(event, element);

      if (handler.oneOff) {
        EventHandler.off(element, event.type, fn);
      }

      return fn.apply(element, [event]);
    };
  }

  function bootstrapDelegationHandler(element, selector, fn) {
    return function handler(event) {
      var domElements = element.querySelectorAll(selector);

      for (var target = event.target; target && target !== this; target = target.parentNode) {
        for (var i = domElements.length; i--;) {
          if (domElements[i] === target) {
            fixEvent(event, target);

            if (handler.oneOff) {
              EventHandler.off(element, event.type, fn);
            }

            return fn.apply(target, [event]);
          }
        }
      } // To please ESLint


      return null;
    };
  }

  function findHandler(events, handler, delegationSelector) {
    if (delegationSelector === void 0) {
      delegationSelector = null;
    }

    var uidList = Object.keys(events);

    for (var i = 0; i < uidList.length; i++) {
      var uid = uidList[i];
      var event = events[uid];

      if (event.originalHandler === handler && event.delegationSelector === delegationSelector) {
        return events[uid];
      }
    }

    return null;
  }

  function normalizeParams(originalTypeEvent, handler, delegationFn) {
    var delegation = typeof handler === 'string';
    var originalHandler = delegation ? delegationFn : handler; // allow to get the native events from namespaced events ('click.bs.button' --> 'click')

    var typeEvent = originalTypeEvent.replace(stripNameRegex, '');
    var custom = customEvents[typeEvent];

    if (custom) {
      typeEvent = custom;
    }

    var isNative = nativeEvents.indexOf(typeEvent) > -1;

    if (!isNative) {
      typeEvent = originalTypeEvent;
    }

    return [delegation, originalHandler, typeEvent];
  }

  function addHandler(element, originalTypeEvent, handler, delegationFn, oneOff) {
    if (typeof originalTypeEvent !== 'string' || !element) {
      return;
    }

    if (!handler) {
      handler = delegationFn;
      delegationFn = null;
    }

    var _normalizeParams = normalizeParams(originalTypeEvent, handler, delegationFn),
        delegation = _normalizeParams[0],
        originalHandler = _normalizeParams[1],
        typeEvent = _normalizeParams[2];

    var events = getEvent(element);
    var handlers = events[typeEvent] || (events[typeEvent] = {});
    var previousFn = findHandler(handlers, originalHandler, delegation ? handler : null);

    if (previousFn) {
      previousFn.oneOff = previousFn.oneOff && oneOff;
      return;
    }

    var uid = getUidEvent(originalHandler, originalTypeEvent.replace(namespaceRegex, ''));
    var fn = !delegation ? bootstrapHandler(element, handler) : bootstrapDelegationHandler(element, handler, delegationFn);
    fn.delegationSelector = delegation ? handler : null;
    fn.originalHandler = originalHandler;
    fn.oneOff = oneOff;
    fn.uidEvent = uid;
    handlers[uid] = fn;
    element.addEventListener(typeEvent, fn, delegation);
  }

  function removeHandler(element, events, typeEvent, handler, delegationSelector) {
    var fn = findHandler(events[typeEvent], handler, delegationSelector);

    if (fn === null) {
      return;
    }

    element.removeEventListener(typeEvent, fn, Boolean(delegationSelector));
    delete events[typeEvent][fn.uidEvent];
  }

  function removeNamespacedHandlers(element, events, typeEvent, namespace) {
    var storeElementEvent = events[typeEvent] || {};
    Object.keys(storeElementEvent).forEach(function (handlerKey) {
      if (handlerKey.indexOf(namespace) > -1) {
        var event = storeElementEvent[handlerKey];
        removeHandler(element, events, typeEvent, event.originalHandler, event.delegationSelector);
      }
    });
  }

  var EventHandler = {
    on: function on(element, event, handler, delegationFn) {
      addHandler(element, event, handler, delegationFn, false);
    },
    one: function one(element, event, handler, delegationFn) {
      addHandler(element, event, handler, delegationFn, true);
    },
    off: function off(element, originalTypeEvent, handler, delegationFn) {
      if (typeof originalTypeEvent !== 'string' || !element) {
        return;
      }

      var _normalizeParams2 = normalizeParams(originalTypeEvent, handler, delegationFn),
          delegation = _normalizeParams2[0],
          originalHandler = _normalizeParams2[1],
          typeEvent = _normalizeParams2[2];

      var inNamespace = typeEvent !== originalTypeEvent;
      var events = getEvent(element);
      var isNamespace = originalTypeEvent.charAt(0) === '.';

      if (typeof originalHandler !== 'undefined') {
        // Simplest case: handler is passed, remove that listener ONLY.
        if (!events || !events[typeEvent]) {
          return;
        }

        removeHandler(element, events, typeEvent, originalHandler, delegation ? handler : null);
        return;
      }

      if (isNamespace) {
        Object.keys(events).forEach(function (elementEvent) {
          removeNamespacedHandlers(element, events, elementEvent, originalTypeEvent.substr(1));
        });
      }

      var storeElementEvent = events[typeEvent] || {};
      Object.keys(storeElementEvent).forEach(function (keyHandlers) {
        var handlerKey = keyHandlers.replace(stripUidRegex, '');

        if (!inNamespace || originalTypeEvent.indexOf(handlerKey) > -1) {
          var event = storeElementEvent[keyHandlers];
          removeHandler(element, events, typeEvent, event.originalHandler, event.delegationSelector);
        }
      });
    },
    trigger: function trigger(element, event, args) {
      if (typeof event !== 'string' || !element) {
        return null;
      }

      var typeEvent = event.replace(stripNameRegex, '');
      var inNamespace = event !== typeEvent;
      var isNative = nativeEvents.indexOf(typeEvent) > -1;
      var jQueryEvent;
      var bubbles = true;
      var nativeDispatch = true;
      var defaultPrevented = false;
      var evt = null;

      if (inNamespace && typeof jQuery !== 'undefined') {
        jQueryEvent = jQuery.Event(event, args);
        jQuery(element).trigger(jQueryEvent);
        bubbles = !jQueryEvent.isPropagationStopped();
        nativeDispatch = !jQueryEvent.isImmediatePropagationStopped();
        defaultPrevented = jQueryEvent.isDefaultPrevented();
      }

      if (isNative) {
        evt = document.createEvent('HTMLEvents');
        evt.initEvent(typeEvent, bubbles, true);
      } else {
        evt = new CustomEvent(event, {
          bubbles: bubbles,
          cancelable: true
        });
      } // merge custom informations in our event


      if (typeof args !== 'undefined') {
        Object.keys(args).forEach(function (key) {
          Object.defineProperty(evt, key, {
            get: function get() {
              return args[key];
            }
          });
        });
      }

      if (defaultPrevented) {
        evt.preventDefault();

        if (!Polyfill.defaultPreventedPreservedOnDispatch) {
          Object.defineProperty(evt, 'defaultPrevented', {
            get: function get() {
              return true;
            }
          });
        }
      }

      if (nativeDispatch) {
        element.dispatchEvent(evt);
      }

      if (evt.defaultPrevented && typeof jQueryEvent !== 'undefined') {
        jQueryEvent.preventDefault();
      }

      return evt;
    }
  };

  /**
   * --------------------------------------------------------------------------
   * Bootstrap (v4.3.1): dom/selectorEngine.js
   * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
   * --------------------------------------------------------------------------
   */
  /**
   * ------------------------------------------------------------------------
   * Constants
   * ------------------------------------------------------------------------
   */

  var findFn = Polyfill.find;
  var _findOne = Polyfill.findOne;
  var NODE_TEXT = 3;
  var SelectorEngine = {
    matches: function matches(element, selector) {
      return element.matches(selector);
    },
    find: function find(selector, element) {
      if (element === void 0) {
        element = document.documentElement;
      }

      if (typeof selector !== 'string') {
        return null;
      }

      return findFn.call(element, selector);
    },
    findOne: function findOne(selector, element) {
      if (element === void 0) {
        element = document.documentElement;
      }

      if (typeof selector !== 'string') {
        return null;
      }

      return _findOne.call(element, selector);
    },
    children: function children(element, selector) {
      var _this = this;

      if (typeof selector !== 'string') {
        return null;
      }

      var children = makeArray(element.children);
      return children.filter(function (child) {
        return _this.matches(child, selector);
      });
    },
    parents: function parents(element, selector) {
      if (typeof selector !== 'string') {
        return null;
      }

      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;
    },
    closest: function closest(element, selector) {
      if (typeof selector !== 'string') {
        return null;
      }

      return element.closest(selector);
    },
    prev: function prev(element, selector) {
      if (typeof selector !== 'string') {
        return null;
      }

      var siblings = [];
      var previous = element.previousSibling;

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

        previous = previous.previousSibling;
      }

      return siblings;
    }
  };

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

  var NAME = 'alert';
  var VERSION = '4.3.1';
  var DATA_KEY = 'bs.alert';
  var EVENT_KEY = "." + DATA_KEY;
  var DATA_API_KEY = '.data-api';
  var Selector = {
    DISMISS: '[data-dismiss="alert"]'
  };
  var Event$1 = {
    CLOSE: "close" + EVENT_KEY,
    CLOSED: "closed" + EVENT_KEY,
    CLICK_DATA_API: "click" + EVENT_KEY + DATA_API_KEY
  };
  var ClassName = {
    ALERT: 'alert',
    FADE: 'fade',
    SHOW: 'show'
    /**
     * ------------------------------------------------------------------------
     * Class Definition
     * ------------------------------------------------------------------------
     */

  };

  var Alert =
  /*#__PURE__*/
  function () {
    function Alert(element) {
      this._element = element;

      if (this._element) {
        Data.setData(element, DATA_KEY, this);
      }
    } // 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 === null || customEvent.defaultPrevented) {
        return;
      }

      this._removeElement(rootElement);
    };

    _proto.dispose = function dispose() {
      Data.removeData(this._element, DATA_KEY);
      this._element = null;
    } // Private
    ;

    _proto._getRootElement = function _getRootElement(element) {
      var selector = getSelectorFromElement(element);
      var parent = false;

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

      if (!parent) {
        parent = SelectorEngine.closest(element, "." + ClassName.ALERT);
      }

      return parent;
    };

    _proto._triggerCloseEvent = function _triggerCloseEvent(element) {
      return EventHandler.trigger(element, Event$1.CLOSE);
    };

    _proto._removeElement = function _removeElement(element) {
      var _this = this;

      element.classList.remove(ClassName.SHOW);

      if (!element.classList.contains(ClassName.FADE)) {
        this._destroyElement(element);

        return;
      }

      var transitionDuration = getTransitionDurationFromElement(element);
      EventHandler.one(element, TRANSITION_END, function (event) {
        return _this._destroyElement(element, event);
      });
      emulateTransitionEnd(element, transitionDuration);
    };

    _proto._destroyElement = function _destroyElement(element) {
      if (element.parentNode) {
        element.parentNode.removeChild(element);
      }

      EventHandler.trigger(element, Event$1.CLOSED);
    } // Static
    ;

    Alert._jQueryInterface = function _jQueryInterface(config) {
      return this.each(function () {
        var data = Data.getData(this, DATA_KEY);

        if (!data) {
          data = new Alert(this);
        }

        if (config === 'close') {
          data[config](this);
        }
      });
    };

    Alert._handleDismiss = function _handleDismiss(alertInstance) {
      return function (event) {
        if (event) {
          event.preventDefault();
        }

        alertInstance.close(this);
      };
    };

    Alert._getInstance = function _getInstance(element) {
      return Data.getData(element, DATA_KEY);
    };

    _createClass(Alert, null, [{
      key: "VERSION",
      get: function get() {
        return VERSION;
      }
    }]);

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


  EventHandler.on(document, Event$1.CLICK_DATA_API, Selector.DISMISS, Alert._handleDismiss(new Alert()));
  /**
   * ------------------------------------------------------------------------
   * jQuery
   * ------------------------------------------------------------------------
   * add .alert to jQuery only if jQuery is present
   */

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

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

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

  var NAME$1 = 'button';
  var VERSION$1 = '4.3.1';
  var DATA_KEY$1 = 'bs.button';
  var EVENT_KEY$1 = "." + DATA_KEY$1;
  var DATA_API_KEY$1 = '.data-api';
  var ClassName$1 = {
    ACTIVE: 'active',
    BUTTON: 'btn',
    FOCUS: 'focus'
  };
  var Selector$1 = {
    DATA_TOGGLE_CARROT: '[data-toggle^="button"]',
    DATA_TOGGLE: '[data-toggle="buttons"]',
    INPUT: 'input:not([type="hidden"])',
    ACTIVE: '.active',
    BUTTON: '.btn'
  };
  var Event$2 = {
    CLICK_DATA_API: "click" + EVENT_KEY$1 + DATA_API_KEY$1,
    FOCUS_DATA_API: "focus" + EVENT_KEY$1 + DATA_API_KEY$1,
    BLUR_DATA_API: "blur" + EVENT_KEY$1 + DATA_API_KEY$1
    /**
     * ------------------------------------------------------------------------
     * Class Definition
     * ------------------------------------------------------------------------
     */

  };

  var Button =
  /*#__PURE__*/
  function () {
    function Button(element) {
      this._element = element;
      Data.setData(element, DATA_KEY$1, this);
    } // Getters


    var _proto = Button.prototype;

    // Public
    _proto.toggle = function toggle() {
      var triggerChangeEvent = true;
      var addAriaPressed = true;
      var rootElement = SelectorEngine.closest(this._element, Selector$1.DATA_TOGGLE);