bootstrap.esm.js

/*!
  * Bootstrap v5.0.0-alpha1 (https://getbootstrap.com/)
  * Copyright 2011-2020 The Bootstrap Authors (https://github.com/twbs/bootstrap/graphs/contributors)
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
import Popper from 'popper.js';

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

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

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

  return obj;
}

function ownKeys(object, enumerableOnly) {
  var keys = Object.keys(object);

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

  return keys;
}

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

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

  return target;
}

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

/**
 * --------------------------------------------------------------------------
 * Bootstrap (v5.0.0-alpha1): 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'; // Shoutout AngusCroll (https://goo.gl/pxwQGp)

var toType = function toType(obj) {
  if (obj === null || obj === undefined) {
    return "" + obj;
  }

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


var getUID = function getUID(prefix) {
  do {
    prefix += Math.floor(Math.random() * MAX_UID);
  } while (document.getElementById(prefix));

  return prefix;
};

var getSelector = function getSelector(element) {
  var selector = element.getAttribute('data-target');

  if (!selector || selector === '#') {
    var hrefAttr = element.getAttribute('href');
    selector = hrefAttr && hrefAttr !== '#' ? hrefAttr.trim() : null;
  }

  return selector;
};

var getSelectorFromElement = function getSelectorFromElement(element) {
  var selector = getSelector(element);

  if (selector) {
    return document.querySelector(selector) ? selector : null;
  }

  return null;
};

var getElementFromSelector = function getElementFromSelector(element) {
  var selector = getSelector(element);
  return selector ? document.querySelector(selector) : 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 isVisible = function isVisible(element) {
  if (!element) {
    return false;
  }

  if (element.style && element.parentNode && element.parentNode.style) {
    var elementStyle = getComputedStyle(element);
    var parentNodeStyle = getComputedStyle(element.parentNode);
    return elementStyle.display !== 'none' && parentNodeStyle.display !== 'none' && elementStyle.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);
};

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

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

var getjQuery = function getjQuery() {
  var _window = window,
      jQuery = _window.jQuery;

  if (jQuery && !document.body.hasAttribute('data-no-jquery')) {
    return jQuery;
  }

  return null;
};

/**
 * --------------------------------------------------------------------------
 * Bootstrap (v5.0.0-alpha1): 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);
  }
};

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

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

  try {
    element.querySelectorAll(':scope *');
  } catch (_) {
    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;
  };
}

/**
 * --------------------------------------------------------------------------
 * Bootstrap (v5.0.0-alpha1): dom/event-handler.js
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 * --------------------------------------------------------------------------
 */
/**
 * ------------------------------------------------------------------------
 * Constants
 * ------------------------------------------------------------------------
 */

var $ = getjQuery();
var namespaceRegex = /[^.]*(?=\..*)\.|.*/;
var stripNameRegex = /\..*/;
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;
  eventRegistry[uid] = eventRegistry[uid] || {};
  return eventRegistry[uid];
}

function bootstrapHandler(element, fn) {
  return function handler(event) {
    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) {
          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 uidEventList = Object.keys(events);

  for (var i = 0, len = uidEventList.length; i < len; i++) {
    var event = events[uidEventList[i]];

    if (event.originalHandler === handler && event.delegationSelector === delegationSelector) {
      return event;
    }
  }

  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 ? bootstrapDelegationHandler(element, handler, delegationFn) : bootstrapHandler(element, handler);
  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) {
    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.slice(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 && $) {
      jQueryEvent = $.Event(event, args);
      $(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 (!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;
  }
};

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

var NAME = 'alert';
var VERSION = '5.0.0-alpha1';
var DATA_KEY = 'bs.alert';
var EVENT_KEY = "." + DATA_KEY;
var DATA_API_KEY = '.data-api';
var SELECTOR_DISMISS = '[data-dismiss="alert"]';
var EVENT_CLOSE = "close" + EVENT_KEY;
var EVENT_CLOSED = "closed" + EVENT_KEY;
var EVENT_CLICK_DATA_API = "click" + EVENT_KEY + DATA_API_KEY;
var CLASSNAME_ALERT = 'alert';
var CLASSNAME_FADE = 'fade';
var CLASSNAME_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) {
    return getElementFromSelector(element) || element.closest("." + CLASSNAME_ALERT);
  };

  _proto._triggerCloseEvent = function _triggerCloseEvent(element) {
    return EventHandler.trigger(element, EVENT_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 () {
      return _this._destroyElement(element);
    });
    emulateTransitionEnd(element, transitionDuration);
  };

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

    EventHandler.trigger(element, EVENT_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_CLICK_DATA_API, SELECTOR_DISMISS, Alert.handleDismiss(new Alert()));
var $$1 = getjQuery();
/**
 * ------------------------------------------------------------------------
 * jQuery
 * ------------------------------------------------------------------------
 * add .alert to jQuery only if jQuery is present
 */

/* istanbul ignore if */

if ($$1) {
  var JQUERY_NO_CONFLICT = $$1.fn[NAME];
  $$1.fn[NAME] = Alert.jQueryInterface;
  $$1.fn[NAME].Constructor = Alert;

  $$1.fn[NAME].noConflict = function () {
    $$1.fn[NAME] = JQUERY_NO_CONFLICT;
    return Alert.jQueryInterface;
  };
}

/**
 * --------------------------------------------------------------------------
 * Bootstrap (v5.0.0-alpha1): dom/selector-engine.js
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 * --------------------------------------------------------------------------
 */
/**
 * ------------------------------------------------------------------------
 * Constants
 * ------------------------------------------------------------------------
 */

var NODE_TEXT = 3;
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$1 = 'button';
var VERSION$1 = '5.0.0-alpha1';
var DATA_KEY$1 = 'bs.button';
var EVENT_KEY$1 = "." + DATA_KEY$1;
var DATA_API_KEY$1 = '.data-api';
var CLASS_NAME_ACTIVE = 'active';
var CLASS_NAME_DISABLED = 'disabled';
var CLASS_NAME_FOCUS = 'focus';
var SELECTOR_DATA_TOGGLE_CARROT = '[data-toggle^="button"]';
var SELECTOR_DATA_TOGGLE = '[data-toggle="buttons"]';
var SELECTOR_INPUT = 'input:not([type="hidden"])';
var SELECTOR_ACTIVE = '.active';
var SELECTOR_BUTTON = '.btn';
var EVENT_CLICK_DATA_API$1 = "click" + EVENT_KEY$1 + DATA_API_KEY$1;
var EVENT_FOCUS_DATA_API = "focus" + EVENT_KEY$1 + DATA_API_KEY$1;
var EVENT_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 = this._element.closest(SELECTOR_DATA_TOGGLE);

    if (rootElement) {
      var input = SelectorEngine.findOne(SELECTOR_INPUT, this._element);

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

          if (activeElement) {
            activeElement.classList.remove(CLASS_NAME_ACTIVE);
          }
        }

        if (triggerChangeEvent) {
          if (input.hasAttribute('disabled') || rootElement.hasAttribute('disabled') || input.classList.contains(CLASS_NAME_DISABLED) || rootElement.classList.contains(CLASS_NAME_DISABLED)) {
            return;
          }

          input.checked = !this._element.classList.contains(CLASS_NAME_ACTIVE);
          EventHandler.trigger(input, 'change');
        }

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

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

    if (triggerChangeEvent) {
      this._element.classList.toggle(CLASS_NAME_ACTIVE);
    }
  };

  _proto.dispose = function dispose() {
    Data.removeData(this._element, DATA_KEY$1);
    this._element = null;
  } // Static