bootstrap.js

/*!
  * Bootstrap v5.0.0-alpha3 (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/main/LICENSE)
  */
(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory(require('popper.js')) :
  typeof define === 'function' && define.amd ? define(['popper.js'], factory) :
  (global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.bootstrap = factory(global.Popper));
}(this, (function (Popper) { 'use strict';

  function _interopDefaultLegacy (e) { return e && typeof e === 'object' && 'default' in e ? e : { 'default': e }; }

  var Popper__default = /*#__PURE__*/_interopDefaultLegacy(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 _extends() {
    _extends = Object.assign || function (target) {
      for (var i = 1; i < arguments.length; i++) {
        var source = arguments[i];

        for (var key in source) {
          if (Object.prototype.hasOwnProperty.call(source, key)) {
            target[key] = source[key];
          }
        }
      }

      return target;
    };

    return _extends.apply(this, arguments);
  }

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

  /**
   * --------------------------------------------------------------------------
   * Bootstrap (v5.0.0-alpha3): util/index.js
   * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/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-bs-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 = Number.parseFloat(transitionDuration);
    var floatTransitionDelay = Number.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 (Number.parseFloat(transitionDuration) + Number.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-bs-no-jquery')) {
      return jQuery;
    }

    return null;
  };

  var onDOMContentLoaded = function onDOMContentLoaded(callback) {
    if (document.readyState === 'loading') {
      document.addEventListener('DOMContentLoaded', callback);
    } else {
      callback();
    }
  };

  /**
   * --------------------------------------------------------------------------
   * Bootstrap (v5.0.0-alpha3): dom/data.js
   * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
   * --------------------------------------------------------------------------
   */

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

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

        var keyProperties = element.bsKey;

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

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

        var keyProperties = element.bsKey;

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

  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 (v5.0.0-alpha3): dom/event-handler.js
   * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
   * --------------------------------------------------------------------------
   */
  /**
   * ------------------------------------------------------------------------
   * Constants
   * ------------------------------------------------------------------------
   */

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

  var uidEvent = 1;
  var customEvents = {
    mouseenter: 'mouseover',
    mouseleave: 'mouseout'
  };
  var nativeEvents = new Set(['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) {
      event.delegateTarget = 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) {
            event.delegateTarget = 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.has(typeEvent);

    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.includes(namespace)) {
        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.startsWith('.');

      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.includes(handlerKey)) {
          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 $ = getjQuery();
      var typeEvent = event.replace(stripNameRegex, '');
      var inNamespace = event !== typeEvent;
      var isNative = nativeEvents.has(typeEvent);
      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 information 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 (nativeDispatch) {
        element.dispatchEvent(evt);
      }

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

      return evt;
    }
  };

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

  var NAME = 'alert';
  var VERSION = '5.0.0-alpha3';
  var DATA_KEY = 'bs.alert';
  var EVENT_KEY = "." + DATA_KEY;
  var DATA_API_KEY = '.data-api';
  var SELECTOR_DISMISS = '[data-bs-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 = element ? this._getRootElement(element) : this._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()));
  /**
   * ------------------------------------------------------------------------
   * jQuery
   * ------------------------------------------------------------------------
   * add .Alert to jQuery only if jQuery is present
   */

  onDOMContentLoaded(function () {
    var $ = getjQuery();
    /* istanbul ignore if */

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

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

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

  var NAME$1 = 'button';
  var VERSION$1 = '5.0.0-alpha3';
  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 SELECTOR_DATA_TOGGLE = '[data-bs-toggle="button"]';
  var EVENT_CLICK_DATA_API$1 = "click" + 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() {
      // Toggle class and sync the `aria-pressed` attribute with the return value of the `.toggle()` method
      this._element.setAttribute('aria-pressed', this._element.classList.toggle(CLASS_NAME_ACTIVE));
    };

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

    Button.jQueryInterface = function jQueryInterface(config) {
      return this.each(function () {
        var data = Data.getData(this, DATA_KEY$1);

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

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

    Button.getInstance = function getInstance(element) {
      return Data.getData(element, DATA_KEY$1);
    };

    _createClass(Button, null, [{
      key: "VERSION",
      get: function get() {
        return VERSION$1;
      }
    }]);

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


  EventHandler.on(document, EVENT_CLICK_DATA_API$1, SELECTOR_DATA_TOGGLE, function (event) {
    event.preventDefault();
    var button = event.target.closest(SELECTOR_DATA_TOGGLE);
    var data = Data.getData(button, DATA_KEY$1);

    if (!data) {
      data = new Button(button);
    }

    data.toggle();
  });
  /**
   * ------------------------------------------------------------------------
   * jQuery
   * ------------------------------------------------------------------------
   * add .Button to jQuery only if jQuery is present
   */

  onDOMContentLoaded(function () {
    var $ = getjQuery();
    /* istanbul ignore if */

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

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

  /**
   * --------------------------------------------------------------------------
   * Bootstrap (v5.0.0-alpha3): dom/manipulator.js
   * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
   * --------------------------------------------------------------------------
   */
  function normalizeData(val) {
    if (val === 'true') {
      return true;
    }

    if (val === 'false') {
      return false;
    }

    if (val === Number(val).toString()) {
      return Number(val);
    }

    if (val === '' || val === 'null') {
      return null;
    }

    return val;
  }

  function normalizeDataKey(key) {
    return key.replace(/[A-Z]/g, function (chr) {
      return "-" + chr.toLowerCase();
    });
  }

  var Manipulator = {
    setDataAttribute: function setDataAttribute(element, key, value) {
      element.setAttribute("data-bs-" + normalizeDataKey(key), value);
    },
    removeDataAttribute: function removeDataAttribute(element, key) {
      element.removeAttribute("data-bs-" + normalizeDataKey(key));
    },
    getDataAttributes: function getDataAttributes(element) {
      if (!element) {
        return {};
      }

      var attributes = {};
      Object.keys(element.dataset).filter(function (key) {
        return key.startsWith('bs');
      }).forEach(function (key) {
        var pureKey = key.replace(/^bs/, '');
        pureKey = pureKey.charAt(0).toLowerCase() + pureKey.slice(1, pureKey.length);
        attributes[pureKey] = normalizeData(element.dataset[key]);
      });
      return attributes;
    },
    getDataAttribute: function getDataAttribute(element, key) {
      return normalizeData(element.getAttribute("data-bs-" + normalizeDataKey(key)));
    },
    offset: function offset(element) {
      var rect = element.getBoundingClientRect();
      return {
        top: rect.top + document.body.scrollTop,
        left: rect.left + document.body.scrollLeft
      };
    },
    position: function position(element) {
      return {
        top: element.offsetTop,
        left: element.offsetLeft
      };
    }
  };

  /**
   * --------------------------------------------------------------------------
   * Bootstrap (v5.0.0-alpha3): dom/selector-engine.js
   * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
   * --------------------------------------------------------------------------
   */

  /**
   * ------------------------------------------------------------------------
   * Constants
   * ------------------------------------------------------------------------
   */
  var NODE_TEXT = 3;
  var SelectorEngine = {
    matches: function matches(element, selector) {
      return element.matches(selector);
    },
    find: function find(selector, element) {
      var _ref;

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

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

      return Element.prototype.querySelector.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 [];