upgrade to bootstrap 5.0.1 and first batch of fixes

1 files changed, 468 insertions, 357 deletions

diff --git a/vendor/twbs/bootstrap/js/dist/dropdown.js b/vendor/twbs/bootstrap/js/dist/dropdown.js
index 772617ce8..09db6e8ad 100644
--- a/vendor/twbs/bootstrap/js/dist/dropdown.js
+++ b/vendor/twbs/bootstrap/js/dist/dropdown.js
@@ -1,120 +1,252 @@
 /*!
-  * Bootstrap dropdown.js v4.6.0 (https://getbootstrap.com/)
+  * Bootstrap dropdown.js v5.0.1 (https://getbootstrap.com/)
   * Copyright 2011-2021 The Bootstrap Authors (https://github.com/twbs/bootstrap/graphs/contributors)
   * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
   */
 (function (global, factory) {
-  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory(require('jquery'), require('popper.js'), require('./util.js')) :
-  typeof define === 'function' && define.amd ? define(['jquery', 'popper.js', './util'], factory) :
-  (global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.Dropdown = factory(global.jQuery, global.Popper, global.Util));
-}(this, (function ($, Popper, Util) { 'use strict';
+  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory(require('@popperjs/core'), require('./dom/selector-engine.js'), require('./dom/data.js'), require('./dom/event-handler.js'), require('./dom/manipulator.js'), require('./base-component.js')) :
+  typeof define === 'function' && define.amd ? define(['@popperjs/core', './dom/selector-engine', './dom/data', './dom/event-handler', './dom/manipulator', './base-component'], factory) :
+  (global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.Dropdown = factory(global.Popper, global.SelectorEngine, global.Data, global.EventHandler, global.Manipulator, global.Base));
+}(this, (function (Popper, SelectorEngine, Data, EventHandler, Manipulator, BaseComponent) { 'use strict';
 
   function _interopDefaultLegacy (e) { return e && typeof e === 'object' && 'default' in e ? e : { 'default': e }; }
 
-  var $__default = /*#__PURE__*/_interopDefaultLegacy($);
-  var Popper__default = /*#__PURE__*/_interopDefaultLegacy(Popper);
-  var Util__default = /*#__PURE__*/_interopDefaultLegacy(Util);
-
-  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 _interopNamespace(e) {
+    if (e && e.__esModule) return e;
+    var n = Object.create(null);
+    if (e) {
+      Object.keys(e).forEach(function (k) {
+        if (k !== 'default') {
+          var d = Object.getOwnPropertyDescriptor(e, k);
+          Object.defineProperty(n, k, d.get ? d : {
+            enumerable: true,
+            get: function () {
+              return e[k];
+            }
+          });
+        }
+      });
     }
+    n['default'] = e;
+    return Object.freeze(n);
   }
 
-  function _createClass(Constructor, protoProps, staticProps) {
-    if (protoProps) _defineProperties(Constructor.prototype, protoProps);
-    if (staticProps) _defineProperties(Constructor, staticProps);
-    return Constructor;
-  }
+  var Popper__namespace = /*#__PURE__*/_interopNamespace(Popper);
+  var SelectorEngine__default = /*#__PURE__*/_interopDefaultLegacy(SelectorEngine);
+  var Data__default = /*#__PURE__*/_interopDefaultLegacy(Data);
+  var EventHandler__default = /*#__PURE__*/_interopDefaultLegacy(EventHandler);
+  var Manipulator__default = /*#__PURE__*/_interopDefaultLegacy(Manipulator);
+  var BaseComponent__default = /*#__PURE__*/_interopDefaultLegacy(BaseComponent);
 
-  function _extends() {
-    _extends = Object.assign || function (target) {
-      for (var i = 1; i < arguments.length; i++) {
-        var source = arguments[i];
+  const toType = obj => {
+    if (obj === null || obj === undefined) {
+      return `${obj}`;
+    }
 
-        for (var key in source) {
-          if (Object.prototype.hasOwnProperty.call(source, key)) {
-            target[key] = source[key];
-          }
-        }
+    return {}.toString.call(obj).match(/\s([a-z]+)/i)[1].toLowerCase();
+  };
+
+  const getSelector = element => {
+    let selector = element.getAttribute('data-bs-target');
+
+    if (!selector || selector === '#') {
+      let hrefAttr = element.getAttribute('href'); // The only valid content that could double as a selector are IDs or classes,
+      // so everything starting with `#` or `.`. If a "real" URL is used as the selector,
+      // `document.querySelector` will rightfully complain it is invalid.
+      // See https://github.com/twbs/bootstrap/issues/32273
+
+      if (!hrefAttr || !hrefAttr.includes('#') && !hrefAttr.startsWith('.')) {
+        return null;
+      } // Just in case some CMS puts out a full URL with the anchor appended
+
+
+      if (hrefAttr.includes('#') && !hrefAttr.startsWith('#')) {
+        hrefAttr = `#${hrefAttr.split('#')[1]}`;
       }
 
-      return target;
-    };
+      selector = hrefAttr && hrefAttr !== '#' ? hrefAttr.trim() : null;
+    }
 
-    return _extends.apply(this, arguments);
-  }
+    return selector;
+  };
+
+  const getElementFromSelector = element => {
+    const selector = getSelector(element);
+    return selector ? document.querySelector(selector) : null;
+  };
+
+  const isElement = obj => {
+    if (!obj || typeof obj !== 'object') {
+      return false;
+    }
+
+    if (typeof obj.jquery !== 'undefined') {
+      obj = obj[0];
+    }
+
+    return typeof obj.nodeType !== 'undefined';
+  };
+
+  const getElement = obj => {
+    if (isElement(obj)) {
+      // it's a jQuery object or a node element
+      return obj.jquery ? obj[0] : obj;
+    }
+
+    if (typeof obj === 'string' && obj.length > 0) {
+      return SelectorEngine__default['default'].findOne(obj);
+    }
+
+    return null;
+  };
+
+  const typeCheckConfig = (componentName, config, configTypes) => {
+    Object.keys(configTypes).forEach(property => {
+      const expectedTypes = configTypes[property];
+      const value = config[property];
+      const valueType = value && isElement(value) ? 'element' : toType(value);
+
+      if (!new RegExp(expectedTypes).test(valueType)) {
+        throw new TypeError(`${componentName.toUpperCase()}: Option "${property}" provided type "${valueType}" but expected type "${expectedTypes}".`);
+      }
+    });
+  };
+
+  const isVisible = element => {
+    if (!element) {
+      return false;
+    }
+
+    if (element.style && element.parentNode && element.parentNode.style) {
+      const elementStyle = getComputedStyle(element);
+      const parentNodeStyle = getComputedStyle(element.parentNode);
+      return elementStyle.display !== 'none' && parentNodeStyle.display !== 'none' && elementStyle.visibility !== 'hidden';
+    }
+
+    return false;
+  };
+
+  const isDisabled = element => {
+    if (!element || element.nodeType !== Node.ELEMENT_NODE) {
+      return true;
+    }
+
+    if (element.classList.contains('disabled')) {
+      return true;
+    }
+
+    if (typeof element.disabled !== 'undefined') {
+      return element.disabled;
+    }
+
+    return element.hasAttribute('disabled') && element.getAttribute('disabled') !== 'false';
+  };
+
+  const noop = () => {};
 
+  const getjQuery = () => {
+    const {
+      jQuery
+    } = window;
+
+    if (jQuery && !document.body.hasAttribute('data-bs-no-jquery')) {
+      return jQuery;
+    }
+
+    return null;
+  };
+
+  const onDOMContentLoaded = callback => {
+    if (document.readyState === 'loading') {
+      document.addEventListener('DOMContentLoaded', callback);
+    } else {
+      callback();
+    }
+  };
+
+  const isRTL = () => document.documentElement.dir === 'rtl';
+
+  const defineJQueryPlugin = plugin => {
+    onDOMContentLoaded(() => {
+      const $ = getjQuery();
+      /* istanbul ignore if */
+
+      if ($) {
+        const name = plugin.NAME;
+        const JQUERY_NO_CONFLICT = $.fn[name];
+        $.fn[name] = plugin.jQueryInterface;
+        $.fn[name].Constructor = plugin;
+
+        $.fn[name].noConflict = () => {
+          $.fn[name] = JQUERY_NO_CONFLICT;
+          return plugin.jQueryInterface;
+        };
+      }
+    });
+  };
+
+  /**
+   * --------------------------------------------------------------------------
+   * Bootstrap (v5.0.1): dropdown.js
+   * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
+   * --------------------------------------------------------------------------
+   */
   /**
    * ------------------------------------------------------------------------
    * Constants
    * ------------------------------------------------------------------------
    */
 
-  var NAME = 'dropdown';
-  var VERSION = '4.6.0';
-  var DATA_KEY = 'bs.dropdown';
-  var EVENT_KEY = "." + DATA_KEY;
-  var DATA_API_KEY = '.data-api';
-  var JQUERY_NO_CONFLICT = $__default['default'].fn[NAME];
-  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_HIDE = "hide" + EVENT_KEY;
-  var EVENT_HIDDEN = "hidden" + EVENT_KEY;
-  var EVENT_SHOW = "show" + EVENT_KEY;
-  var EVENT_SHOWN = "shown" + EVENT_KEY;
-  var EVENT_CLICK = "click" + EVENT_KEY;
-  var EVENT_CLICK_DATA_API = "click" + EVENT_KEY + DATA_API_KEY;
-  var EVENT_KEYDOWN_DATA_API = "keydown" + EVENT_KEY + DATA_API_KEY;
-  var EVENT_KEYUP_DATA_API = "keyup" + EVENT_KEY + DATA_API_KEY;
-  var CLASS_NAME_DISABLED = 'disabled';
-  var CLASS_NAME_SHOW = 'show';
-  var CLASS_NAME_DROPUP = 'dropup';
-  var CLASS_NAME_DROPRIGHT = 'dropright';
-  var CLASS_NAME_DROPLEFT = 'dropleft';
-  var CLASS_NAME_MENURIGHT = 'dropdown-menu-right';
-  var CLASS_NAME_POSITION_STATIC = 'position-static';
-  var SELECTOR_DATA_TOGGLE = '[data-toggle="dropdown"]';
-  var SELECTOR_FORM_CHILD = '.dropdown form';
-  var SELECTOR_MENU = '.dropdown-menu';
-  var SELECTOR_NAVBAR_NAV = '.navbar-nav';
-  var SELECTOR_VISIBLE_ITEMS = '.dropdown-menu .dropdown-item:not(.disabled):not(:disabled)';
-  var PLACEMENT_TOP = 'top-start';
-  var PLACEMENT_TOPEND = 'top-end';
-  var PLACEMENT_BOTTOM = 'bottom-start';
-  var PLACEMENT_BOTTOMEND = 'bottom-end';
-  var PLACEMENT_RIGHT = 'right-start';
-  var PLACEMENT_LEFT = 'left-start';
-  var Default = {
-    offset: 0,
-    flip: true,
-    boundary: 'scrollParent',
+  const NAME = 'dropdown';
+  const DATA_KEY = 'bs.dropdown';
+  const EVENT_KEY = `.${DATA_KEY}`;
+  const DATA_API_KEY = '.data-api';
+  const ESCAPE_KEY = 'Escape';
+  const SPACE_KEY = 'Space';
+  const TAB_KEY = 'Tab';
+  const ARROW_UP_KEY = 'ArrowUp';
+  const ARROW_DOWN_KEY = 'ArrowDown';
+  const RIGHT_MOUSE_BUTTON = 2; // MouseEvent.button value for the secondary button, usually the right button
+
+  const REGEXP_KEYDOWN = new RegExp(`${ARROW_UP_KEY}|${ARROW_DOWN_KEY}|${ESCAPE_KEY}`);
+  const EVENT_HIDE = `hide${EVENT_KEY}`;
+  const EVENT_HIDDEN = `hidden${EVENT_KEY}`;
+  const EVENT_SHOW = `show${EVENT_KEY}`;
+  const EVENT_SHOWN = `shown${EVENT_KEY}`;
+  const EVENT_CLICK = `click${EVENT_KEY}`;
+  const EVENT_CLICK_DATA_API = `click${EVENT_KEY}${DATA_API_KEY}`;
+  const EVENT_KEYDOWN_DATA_API = `keydown${EVENT_KEY}${DATA_API_KEY}`;
+  const EVENT_KEYUP_DATA_API = `keyup${EVENT_KEY}${DATA_API_KEY}`;
+  const CLASS_NAME_SHOW = 'show';
+  const CLASS_NAME_DROPUP = 'dropup';
+  const CLASS_NAME_DROPEND = 'dropend';
+  const CLASS_NAME_DROPSTART = 'dropstart';
+  const CLASS_NAME_NAVBAR = 'navbar';
+  const SELECTOR_DATA_TOGGLE = '[data-bs-toggle="dropdown"]';
+  const SELECTOR_MENU = '.dropdown-menu';
+  const SELECTOR_NAVBAR_NAV = '.navbar-nav';
+  const SELECTOR_VISIBLE_ITEMS = '.dropdown-menu .dropdown-item:not(.disabled):not(:disabled)';
+  const PLACEMENT_TOP = isRTL() ? 'top-end' : 'top-start';
+  const PLACEMENT_TOPEND = isRTL() ? 'top-start' : 'top-end';
+  const PLACEMENT_BOTTOM = isRTL() ? 'bottom-end' : 'bottom-start';
+  const PLACEMENT_BOTTOMEND = isRTL() ? 'bottom-start' : 'bottom-end';
+  const PLACEMENT_RIGHT = isRTL() ? 'left-start' : 'right-start';
+  const PLACEMENT_LEFT = isRTL() ? 'right-start' : 'left-start';
+  const Default = {
+    offset: [0, 2],
+    boundary: 'clippingParents',
     reference: 'toggle',
     display: 'dynamic',
-    popperConfig: null
+    popperConfig: null,
+    autoClose: true
   };
-  var DefaultType = {
-    offset: '(number|string|function)',
-    flip: 'boolean',
+  const DefaultType = {
+    offset: '(array|string|function)',
     boundary: '(string|element)',
-    reference: '(string|element)',
+    reference: '(string|element|object)',
     display: 'string',
-    popperConfig: '(null|object)'
+    popperConfig: '(null|object|function)',
+    autoClose: '(boolean|string)'
   };
   /**
    * ------------------------------------------------------------------------
@@ -122,9 +254,9 @@
    * ------------------------------------------------------------------------
    */
 
-  var Dropdown = /*#__PURE__*/function () {
-    function Dropdown(element, config) {
-      this._element = element;
+  class Dropdown extends BaseComponent__default['default'] {
+    constructor(element, config) {
+      super(element);
       this._popper = null;
       this._config = this._getConfig(config);
       this._menu = this._getMenuElement();
@@ -134,325 +266,344 @@
     } // Getters
 
 
-    var _proto = Dropdown.prototype;
+    static get Default() {
+      return Default;
+    }
 
-    // Public
-    _proto.toggle = function toggle() {
-      if (this._element.disabled || $__default['default'](this._element).hasClass(CLASS_NAME_DISABLED)) {
-        return;
-      }
+    static get DefaultType() {
+      return DefaultType;
+    }
 
-      var isActive = $__default['default'](this._menu).hasClass(CLASS_NAME_SHOW);
+    static get NAME() {
+      return NAME;
+    } // Public
 
-      Dropdown._clearMenus();
 
-      if (isActive) {
+    toggle() {
+      if (isDisabled(this._element)) {
         return;
       }
 
-      this.show(true);
-    };
+      const isActive = this._element.classList.contains(CLASS_NAME_SHOW);
 
-    _proto.show = function show(usePopper) {
-      if (usePopper === void 0) {
-        usePopper = false;
+      if (isActive) {
+        this.hide();
+        return;
       }
 
-      if (this._element.disabled || $__default['default'](this._element).hasClass(CLASS_NAME_DISABLED) || $__default['default'](this._menu).hasClass(CLASS_NAME_SHOW)) {
+      this.show();
+    }
+
+    show() {
+      if (isDisabled(this._element) || this._menu.classList.contains(CLASS_NAME_SHOW)) {
         return;
       }
 
-      var relatedTarget = {
+      const parent = Dropdown.getParentFromElement(this._element);
+      const relatedTarget = {
         relatedTarget: this._element
       };
-      var showEvent = $__default['default'].Event(EVENT_SHOW, relatedTarget);
-
-      var parent = Dropdown._getParentFromElement(this._element);
-
-      $__default['default'](parent).trigger(showEvent);
+      const showEvent = EventHandler__default['default'].trigger(this._element, EVENT_SHOW, relatedTarget);
 
-      if (showEvent.isDefaultPrevented()) {
+      if (showEvent.defaultPrevented) {
         return;
       } // Totally disable Popper for Dropdowns in Navbar
 
 
-      if (!this._inNavbar && usePopper) {
-        /**
-         * Check for Popper dependency
-         * Popper - https://popper.js.org
-         */
-        if (typeof Popper__default['default'] === 'undefined') {
+      if (this._inNavbar) {
+        Manipulator__default['default'].setDataAttribute(this._menu, 'popper', 'none');
+      } else {
+        if (typeof Popper__namespace === 'undefined') {
           throw new TypeError('Bootstrap\'s dropdowns require Popper (https://popper.js.org)');
         }
 
-        var referenceElement = this._element;
+        let referenceElement = this._element;
 
         if (this._config.reference === 'parent') {
           referenceElement = parent;
-        } else if (Util__default['default'].isElement(this._config.reference)) {
-          referenceElement = this._config.reference; // Check if it's jQuery element
+        } else if (isElement(this._config.reference)) {
+          referenceElement = getElement(this._config.reference);
+        } else if (typeof this._config.reference === 'object') {
+          referenceElement = this._config.reference;
+        }
 
-          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
+        const popperConfig = this._getPopperConfig();
 
+        const isDisplayStatic = popperConfig.modifiers.find(modifier => modifier.name === 'applyStyles' && modifier.enabled === false);
+        this._popper = Popper__namespace.createPopper(referenceElement, this._menu, popperConfig);
 
-        if (this._config.boundary !== 'scrollParent') {
-          $__default['default'](parent).addClass(CLASS_NAME_POSITION_STATIC);
+        if (isDisplayStatic) {
+          Manipulator__default['default'].setDataAttribute(this._menu, 'popper', 'static');
         }
-
-        this._popper = new Popper__default['default'](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 && $__default['default'](parent).closest(SELECTOR_NAVBAR_NAV).length === 0) {
-        $__default['default'](document.body).children().on('mouseover', null, $__default['default'].noop);
+      if ('ontouchstart' in document.documentElement && !parent.closest(SELECTOR_NAVBAR_NAV)) {
+        [].concat(...document.body.children).forEach(elem => EventHandler__default['default'].on(elem, 'mouseover', noop));
       }
 
       this._element.focus();
 
       this._element.setAttribute('aria-expanded', true);
 
-      $__default['default'](this._menu).toggleClass(CLASS_NAME_SHOW);
-      $__default['default'](parent).toggleClass(CLASS_NAME_SHOW).trigger($__default['default'].Event(EVENT_SHOWN, relatedTarget));
-    };
+      this._menu.classList.toggle(CLASS_NAME_SHOW);
+
+      this._element.classList.toggle(CLASS_NAME_SHOW);
+
+      EventHandler__default['default'].trigger(this._element, EVENT_SHOWN, relatedTarget);
+    }
 
-    _proto.hide = function hide() {
-      if (this._element.disabled || $__default['default'](this._element).hasClass(CLASS_NAME_DISABLED) || !$__default['default'](this._menu).hasClass(CLASS_NAME_SHOW)) {
+    hide() {
+      if (isDisabled(this._element) || !this._menu.classList.contains(CLASS_NAME_SHOW)) {
         return;
       }
 
-      var relatedTarget = {
+      const relatedTarget = {
         relatedTarget: this._element
       };
-      var hideEvent = $__default['default'].Event(EVENT_HIDE, relatedTarget);
 
-      var parent = Dropdown._getParentFromElement(this._element);
+      this._completeHide(relatedTarget);
+    }
+
+    dispose() {
+      if (this._popper) {
+        this._popper.destroy();
+      }
+
+      super.dispose();
+    }
+
+    update() {
+      this._inNavbar = this._detectNavbar();
+
+      if (this._popper) {
+        this._popper.update();
+      }
+    } // Private
+
 
-      $__default['default'](parent).trigger(hideEvent);
+    _addEventListeners() {
+      EventHandler__default['default'].on(this._element, EVENT_CLICK, event => {
+        event.preventDefault();
+        this.toggle();
+      });
+    }
+
+    _completeHide(relatedTarget) {
+      const hideEvent = EventHandler__default['default'].trigger(this._element, EVENT_HIDE, relatedTarget);
 
-      if (hideEvent.isDefaultPrevented()) {
+      if (hideEvent.defaultPrevented) {
         return;
+      } // If this is a touch-enabled device we remove the extra
+      // empty mouseover listeners we added for iOS support
+
+
+      if ('ontouchstart' in document.documentElement) {
+        [].concat(...document.body.children).forEach(elem => EventHandler__default['default'].off(elem, 'mouseover', noop));
       }
 
       if (this._popper) {
         this._popper.destroy();
       }
 
-      $__default['default'](this._menu).toggleClass(CLASS_NAME_SHOW);
-      $__default['default'](parent).toggleClass(CLASS_NAME_SHOW).trigger($__default['default'].Event(EVENT_HIDDEN, relatedTarget));
-    };
+      this._menu.classList.remove(CLASS_NAME_SHOW);
 
-    _proto.dispose = function dispose() {
-      $__default['default'].removeData(this._element, DATA_KEY);
-      $__default['default'](this._element).off(EVENT_KEY);
-      this._element = null;
-      this._menu = null;
+      this._element.classList.remove(CLASS_NAME_SHOW);
 
-      if (this._popper !== null) {
-        this._popper.destroy();
+      this._element.setAttribute('aria-expanded', 'false');
 
-        this._popper = null;
-      }
-    };
+      Manipulator__default['default'].removeDataAttribute(this._menu, 'popper');
+      EventHandler__default['default'].trigger(this._element, EVENT_HIDDEN, relatedTarget);
+    }
 
-    _proto.update = function update() {
-      this._inNavbar = this._detectNavbar();
+    _getConfig(config) {
+      config = { ...this.constructor.Default,
+        ...Manipulator__default['default'].getDataAttributes(this._element),
+        ...config
+      };
+      typeCheckConfig(NAME, config, this.constructor.DefaultType);
 
-      if (this._popper !== null) {
-        this._popper.scheduleUpdate();
+      if (typeof config.reference === 'object' && !isElement(config.reference) && typeof config.reference.getBoundingClientRect !== 'function') {
+        // Popper virtual elements require a getBoundingClientRect method
+        throw new TypeError(`${NAME.toUpperCase()}: Option "reference" provided type "object" without a required "getBoundingClientRect" method.`);
       }
-    } // Private
-    ;
 
-    _proto._addEventListeners = function _addEventListeners() {
-      var _this = this;
+      return config;
+    }
 
-      $__default['default'](this._element).on(EVENT_CLICK, function (event) {
-        event.preventDefault();
-        event.stopPropagation();
+    _getMenuElement() {
+      return SelectorEngine__default['default'].next(this._element, SELECTOR_MENU)[0];
+    }
 
-        _this.toggle();
-      });
-    };
+    _getPlacement() {
+      const parentDropdown = this._element.parentNode;
 
-    _proto._getConfig = function _getConfig(config) {
-      config = _extends({}, this.constructor.Default, $__default['default'](this._element).data(), config);
-      Util__default['default'].typeCheckConfig(NAME, config, this.constructor.DefaultType);
-      return config;
-    };
+      if (parentDropdown.classList.contains(CLASS_NAME_DROPEND)) {
+        return PLACEMENT_RIGHT;
+      }
 
-    _proto._getMenuElement = function _getMenuElement() {
-      if (!this._menu) {
-        var parent = Dropdown._getParentFromElement(this._element);
+      if (parentDropdown.classList.contains(CLASS_NAME_DROPSTART)) {
+        return PLACEMENT_LEFT;
+      } // We need to trim the value because custom properties can also include spaces
 
-        if (parent) {
-          this._menu = parent.querySelector(SELECTOR_MENU);
-        }
-      }
 
-      return this._menu;
-    };
-
-    _proto._getPlacement = function _getPlacement() {
-      var $parentDropdown = $__default['default'](this._element.parentNode);
-      var placement = PLACEMENT_BOTTOM; // Handle dropup
-
-      if ($parentDropdown.hasClass(CLASS_NAME_DROPUP)) {
-        placement = $__default['default'](this._menu).hasClass(CLASS_NAME_MENURIGHT) ? PLACEMENT_TOPEND : PLACEMENT_TOP;
-      } else if ($parentDropdown.hasClass(CLASS_NAME_DROPRIGHT)) {
-        placement = PLACEMENT_RIGHT;
-      } else if ($parentDropdown.hasClass(CLASS_NAME_DROPLEFT)) {
-        placement = PLACEMENT_LEFT;
-      } else if ($__default['default'](this._menu).hasClass(CLASS_NAME_MENURIGHT)) {
-        placement = PLACEMENT_BOTTOMEND;
+      const isEnd = getComputedStyle(this._menu).getPropertyValue('--bs-position').trim() === 'end';
+
+      if (parentDropdown.classList.contains(CLASS_NAME_DROPUP)) {
+        return isEnd ? PLACEMENT_TOPEND : PLACEMENT_TOP;
       }
 
-      return placement;
-    };
+      return isEnd ? PLACEMENT_BOTTOMEND : PLACEMENT_BOTTOM;
+    }
 
-    _proto._detectNavbar = function _detectNavbar() {
-      return $__default['default'](this._element).closest('.navbar').length > 0;
-    };
+    _detectNavbar() {
+      return this._element.closest(`.${CLASS_NAME_NAVBAR}`) !== null;
+    }
 
-    _proto._getOffset = function _getOffset() {
-      var _this2 = this;
+    _getOffset() {
+      const {
+        offset
+      } = this._config;
 
-      var offset = {};
+      if (typeof offset === 'string') {
+        return offset.split(',').map(val => Number.parseInt(val, 10));
+      }
 
-      if (typeof this._config.offset === 'function') {
-        offset.fn = function (data) {
-          data.offsets = _extends({}, data.offsets, _this2._config.offset(data.offsets, _this2._element) || {});
-          return data;
-        };
-      } else {
-        offset.offset = this._config.offset;
+      if (typeof offset === 'function') {
+        return popperData => offset(popperData, this._element);
       }
 
       return offset;
-    };
+    }
 
-    _proto._getPopperConfig = function _getPopperConfig() {
-      var popperConfig = {
+    _getPopperConfig() {
+      const defaultBsPopperConfig = {
         placement: this._getPlacement(),
-        modifiers: {
-          offset: this._getOffset(),
-          flip: {
-            enabled: this._config.flip
-          },
-          preventOverflow: {
-            boundariesElement: this._config.boundary
+        modifiers: [{
+          name: 'preventOverflow',
+          options: {
+            boundary: this._config.boundary
           }
-        }
+        }, {
+          name: 'offset',
+          options: {
+            offset: this._getOffset()
+          }
+        }]
       }; // Disable Popper if we have a static display
 
       if (this._config.display === 'static') {
-        popperConfig.modifiers.applyStyle = {
+        defaultBsPopperConfig.modifiers = [{
+          name: 'applyStyles',
           enabled: false
-        };
+        }];
       }
 
-      return _extends({}, popperConfig, this._config.popperConfig);
-    } // Static
-    ;
+      return { ...defaultBsPopperConfig,
+        ...(typeof this._config.popperConfig === 'function' ? this._config.popperConfig(defaultBsPopperConfig) : this._config.popperConfig)
+      };
+    }
 
-    Dropdown._jQueryInterface = function _jQueryInterface(config) {
-      return this.each(function () {
-        var data = $__default['default'](this).data(DATA_KEY);
+    _selectMenuItem(event) {
+      const items = SelectorEngine__default['default'].find(SELECTOR_VISIBLE_ITEMS, this._menu).filter(isVisible);
 
-        var _config = typeof config === 'object' ? config : null;
+      if (!items.length) {
+        return;
+      }
 
-        if (!data) {
-          data = new Dropdown(this, _config);
-          $__default['default'](this).data(DATA_KEY, data);
-        }
+      let index = items.indexOf(event.target); // Up
 
-        if (typeof config === 'string') {
-          if (typeof data[config] === 'undefined') {
-            throw new TypeError("No method named \"" + config + "\"");
-          }
+      if (event.key === ARROW_UP_KEY && index > 0) {
+        index--;
+      } // Down
 
-          data[config]();
-        }
-      });
-    };
 
-    Dropdown._clearMenus = function _clearMenus(event) {
-      if (event && (event.which === RIGHT_MOUSE_BUTTON_WHICH || event.type === 'keyup' && event.which !== TAB_KEYCODE)) {
-        return;
-      }
+      if (event.key === ARROW_DOWN_KEY && index < items.length - 1) {
+        index++;
+      } // index is -1 if the first keydown is an ArrowUp
 
-      var toggles = [].slice.call(document.querySelectorAll(SELECTOR_DATA_TOGGLE));
 
-      for (var i = 0, len = toggles.length; i < len; i++) {
-        var parent = Dropdown._getParentFromElement(toggles[i]);
+      index = index === -1 ? 0 : index;
+      items[index].focus();
+    } // Static
 
-        var context = $__default['default'](toggles[i]).data(DATA_KEY);
-        var relatedTarget = {
-          relatedTarget: toggles[i]
-        };
 
-        if (event && event.type === 'click') {
-          relatedTarget.clickEvent = event;
-        }
+    static dropdownInterface(element, config) {
+      let data = Data__default['default'].get(element, DATA_KEY);
 
-        if (!context) {
-          continue;
+      const _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}"`);
         }
 
-        var dropdownMenu = context._menu;
+        data[config]();
+      }
+    }
+
+    static jQueryInterface(config) {
+      return this.each(function () {
+        Dropdown.dropdownInterface(this, config);
+      });
+    }
+
+    static clearMenus(event) {
+      if (event && (event.button === RIGHT_MOUSE_BUTTON || event.type === 'keyup' && event.key !== TAB_KEY)) {
+        return;
+      }
 
-        if (!$__default['default'](parent).hasClass(CLASS_NAME_SHOW)) {
+      const toggles = SelectorEngine__default['default'].find(SELECTOR_DATA_TOGGLE);
+
+      for (let i = 0, len = toggles.length; i < len; i++) {
+        const context = Data__default['default'].get(toggles[i], DATA_KEY);
+
+        if (!context || context._config.autoClose === false) {
           continue;
         }
 
-        if (event && (event.type === 'click' && /input|textarea/i.test(event.target.tagName) || event.type === 'keyup' && event.which === TAB_KEYCODE) && $__default['default'].contains(parent, event.target)) {
+        if (!context._element.classList.contains(CLASS_NAME_SHOW)) {
           continue;
         }
 
-        var hideEvent = $__default['default'].Event(EVENT_HIDE, relatedTarget);
-        $__default['default'](parent).trigger(hideEvent);
+        const relatedTarget = {
+          relatedTarget: context._element
+        };
 
-        if (hideEvent.isDefaultPrevented()) {
-          continue;
-        } // If this is a touch-enabled device we remove the extra
-        // empty mouseover listeners we added for iOS support
+        if (event) {
+          const composedPath = event.composedPath();
+          const isMenuTarget = composedPath.includes(context._menu);
 
+          if (composedPath.includes(context._element) || context._config.autoClose === 'inside' && !isMenuTarget || context._config.autoClose === 'outside' && isMenuTarget) {
+            continue;
+          } // Tab navigation through the dropdown menu or events from contained inputs shouldn't close the menu
 
-        if ('ontouchstart' in document.documentElement) {
-          $__default['default'](document.body).children().off('mouseover', null, $__default['default'].noop);
-        }
 
-        toggles[i].setAttribute('aria-expanded', 'false');
+          if (context._menu.contains(event.target) && (event.type === 'keyup' && event.key === TAB_KEY || /input|select|option|textarea|form/i.test(event.target.tagName))) {
+            continue;
+          }
 
-        if (context._popper) {
-          context._popper.destroy();
+          if (event.type === 'click') {
+            relatedTarget.clickEvent = event;
+          }
         }
 
-        $__default['default'](dropdownMenu).removeClass(CLASS_NAME_SHOW);
-        $__default['default'](parent).removeClass(CLASS_NAME_SHOW).trigger($__default['default'].Event(EVENT_HIDDEN, relatedTarget));
-      }
-    };
-
-    Dropdown._getParentFromElement = function _getParentFromElement(element) {
-      var parent;
-      var selector = Util__default['default'].getSelectorFromElement(element);
-
-      if (selector) {
-        parent = document.querySelector(selector);
+        context._completeHide(relatedTarget);
       }
+    }
 
-      return parent || element.parentNode;
-    } // eslint-disable-next-line complexity
-    ;
+    static getParentFromElement(element) {
+      return getElementFromSelector(element) || element.parentNode;
+    }
 
-    Dropdown._dataApiKeydownHandler = function _dataApiKeydownHandler(event) {
+    static dataApiKeydownHandler(event) {
       // If not input/textarea:
       //  - And not a key in REGEXP_KEYDOWN => not a dropdown command
       // If input/textarea:
@@ -460,80 +611,45 @@
       //  - 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 || $__default['default'](event.target).closest(SELECTOR_MENU).length) : !REGEXP_KEYDOWN.test(event.which)) {
+      if (/input|textarea/i.test(event.target.tagName) ? event.key === SPACE_KEY || event.key !== ESCAPE_KEY && (event.key !== ARROW_DOWN_KEY && event.key !== ARROW_UP_KEY || event.target.closest(SELECTOR_MENU)) : !REGEXP_KEYDOWN.test(event.key)) {
         return;
       }
 
-      if (this.disabled || $__default['default'](this).hasClass(CLASS_NAME_DISABLED)) {
-        return;
-      }
-
-      var parent = Dropdown._getParentFromElement(this);
+      const isActive = this.classList.contains(CLASS_NAME_SHOW);
 
-      var isActive = $__default['default'](parent).hasClass(CLASS_NAME_SHOW);
-
-      if (!isActive && event.which === ESCAPE_KEYCODE) {
+      if (!isActive && event.key === ESCAPE_KEY) {
         return;
       }
 
       event.preventDefault();
       event.stopPropagation();
 
-      if (!isActive || event.which === ESCAPE_KEYCODE || event.which === SPACE_KEYCODE) {
-        if (event.which === ESCAPE_KEYCODE) {
-          $__default['default'](parent.querySelector(SELECTOR_DATA_TOGGLE)).trigger('focus');
-        }
-
-        $__default['default'](this).trigger('click');
+      if (isDisabled(this)) {
         return;
       }
 
-      var items = [].slice.call(parent.querySelectorAll(SELECTOR_VISIBLE_ITEMS)).filter(function (item) {
-        return $__default['default'](item).is(':visible');
-      });
+      const getToggleButton = () => this.matches(SELECTOR_DATA_TOGGLE) ? this : SelectorEngine__default['default'].prev(this, SELECTOR_DATA_TOGGLE)[0];
 
-      if (items.length === 0) {
+      if (event.key === ESCAPE_KEY) {
+        getToggleButton().focus();
+        Dropdown.clearMenus();
         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 (!isActive && (event.key === ARROW_UP_KEY || event.key === ARROW_DOWN_KEY)) {
+        getToggleButton().click();
+        return;
       }
 
-      if (index < 0) {
-        index = 0;
+      if (!isActive || event.key === SPACE_KEY) {
+        Dropdown.clearMenus();
+        return;
       }
 
-      items[index].focus();
-    };
-
-    _createClass(Dropdown, null, [{
-      key: "VERSION",
-      get: function get() {
-        return VERSION;
-      }
-    }, {
-      key: "Default",
-      get: function get() {
-        return Default;
-      }
-    }, {
-      key: "DefaultType",
-      get: function get() {
-        return DefaultType;
-      }
-    }]);
+      Dropdown.getInstance(getToggleButton())._selectMenuItem(event);
+    }
 
-    return Dropdown;
-  }();
+  }
   /**
    * ------------------------------------------------------------------------
    * Data Api implementation
@@ -541,27 +657,22 @@
    */
 
 
-  $__default['default'](document).on(EVENT_KEYDOWN_DATA_API, SELECTOR_DATA_TOGGLE, Dropdown._dataApiKeydownHandler).on(EVENT_KEYDOWN_DATA_API, SELECTOR_MENU, Dropdown._dataApiKeydownHandler).on(EVENT_CLICK_DATA_API + " " + EVENT_KEYUP_DATA_API, Dropdown._clearMenus).on(EVENT_CLICK_DATA_API, SELECTOR_DATA_TOGGLE, function (event) {
+  EventHandler__default['default'].on(document, EVENT_KEYDOWN_DATA_API, SELECTOR_DATA_TOGGLE, Dropdown.dataApiKeydownHandler);
+  EventHandler__default['default'].on(document, EVENT_KEYDOWN_DATA_API, SELECTOR_MENU, Dropdown.dataApiKeydownHandler);
+  EventHandler__default['default'].on(document, EVENT_CLICK_DATA_API, Dropdown.clearMenus);
+  EventHandler__default['default'].on(document, EVENT_KEYUP_DATA_API, Dropdown.clearMenus);
+  EventHandler__default['default'].on(document, EVENT_CLICK_DATA_API, SELECTOR_DATA_TOGGLE, function (event) {
     event.preventDefault();
-    event.stopPropagation();
-
-    Dropdown._jQueryInterface.call($__default['default'](this), 'toggle');
-  }).on(EVENT_CLICK_DATA_API, SELECTOR_FORM_CHILD, function (e) {
-    e.stopPropagation();
+    Dropdown.dropdownInterface(this);
   });
   /**
    * ------------------------------------------------------------------------
    * jQuery
    * ------------------------------------------------------------------------
+   * add .Dropdown to jQuery only if jQuery is present
    */
 
-  $__default['default'].fn[NAME] = Dropdown._jQueryInterface;
-  $__default['default'].fn[NAME].Constructor = Dropdown;
-
-  $__default['default'].fn[NAME].noConflict = function () {
-    $__default['default'].fn[NAME] = JQUERY_NO_CONFLICT;
-    return Dropdown._jQueryInterface;
-  };
+  defineJQueryPlugin(Dropdown);
 
   return Dropdown;