iVProg/js/accessibleUI/bootstrap/bootstrap.bundle.js

/*!
  * Bootstrap v4.4.1 (https://getbootstrap.com/)
  * Copyright 2011-2019 The Bootstrap Authors (https://github.com/twbs/bootstrap/graphs/contributors)
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
(function (global, factory) {
    typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('jquery')) :
        typeof define === 'function' && define.amd ? define(['exports', 'jquery'], factory) :
            (global = global || self, factory(global.bootstrap = {}, global.jQuery));
}(this, (function (exports, $) {
    'use strict';

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

    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 (v4.4.1): util.js
     * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
     * --------------------------------------------------------------------------
     */
    /**
     * ------------------------------------------------------------------------
     * Private TransitionEnd Helpers
     * ------------------------------------------------------------------------
     */

    var TRANSITION_END = 'transitionend';
    var MAX_UID = 1000000;
    var MILLISECONDS_MULTIPLIER = 1000; // Shoutout AngusCroll (https://goo.gl/pxwQGp)

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

    function getSpecialTransitionEndEvent () {
        return {
            bindType: TRANSITION_END,
            delegateType: TRANSITION_END,
            handle: function handle (event) {
                if ($(event.target).is(this)) {
                    return event.handleObj.handler.apply(this, arguments); // eslint-disable-line prefer-rest-params
                }

                return undefined; // eslint-disable-line no-undefined
            }
        };
    }

    function transitionEndEmulator (duration) {
        var _this = this;

        var called = false;
        $(this).one(Util.TRANSITION_END, function () {
            called = true;
        });
        setTimeout(function () {
            if (!called) {
                Util.triggerTransitionEnd(_this);
            }
        }, duration);
        return this;
    }

    function setTransitionEndSupport () {
        $.fn.emulateTransitionEnd = transitionEndEmulator;
        $.event.special[Util.TRANSITION_END] = getSpecialTransitionEndEvent();
    }

    /**
     * --------------------------------------------------------------------------
     * Public Util Api
     * --------------------------------------------------------------------------
     */


    var Util = {
        TRANSITION_END: 'bsTransitionEnd',
        getUID: function getUID (prefix) {
            do {
                // eslint-disable-next-line no-bitwise
                prefix += ~~(Math.random() * MAX_UID); // "~~" acts like a faster Math.floor() here
            } while (document.getElementById(prefix));

            return prefix;
        },
        getSelectorFromElement: function getSelectorFromElement (element) {
            var selector = element.getAttribute('data-target');

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

            try {
                return document.querySelector(selector) ? selector : null;
            } catch (err) {
                return null;
            }
        },
        getTransitionDurationFromElement: function getTransitionDurationFromElement (element) {
            if (!element) {
                return 0;
            } // Get transition-duration of the element


            var transitionDuration = $(element).css('transition-duration');
            var transitionDelay = $(element).css('transition-delay');
            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;
        },
        reflow: function reflow (element) {
            return element.offsetHeight;
        },
        triggerTransitionEnd: function triggerTransitionEnd (element) {
            $(element).trigger(TRANSITION_END);
        },
        // TODO: Remove in v5
        supportsTransitionEnd: function supportsTransitionEnd () {
            return Boolean(TRANSITION_END);
        },
        isElement: function isElement (obj) {
            return (obj[0] || obj).nodeType;
        },
        typeCheckConfig: function typeCheckConfig (componentName, config, configTypes) {
            for (var property in configTypes) {
                if (Object.prototype.hasOwnProperty.call(configTypes, property)) {
                    var expectedTypes = configTypes[property];
                    var value = config[property];
                    var valueType = value && Util.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 + "\"."));
                    }
                }
            }
        },
        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 Util.findShadowRoot(element.parentNode);
        },
        jQueryDetection: function jQueryDetection () {
            if (typeof $ === 'undefined') {
                throw new TypeError('Bootstrap\'s JavaScript requires jQuery. jQuery must be included before Bootstrap\'s JavaScript.');
            }

            var version = $.fn.jquery.split(' ')[0].split('.');
            var minMajor = 1;
            var ltMajor = 2;
            var minMinor = 9;
            var minPatch = 1;
            var maxMajor = 4;

            if (version[0] < ltMajor && version[1] < minMinor || version[0] === minMajor && version[1] === minMinor && version[2] < minPatch || version[0] >= maxMajor) {
                throw new Error('Bootstrap\'s JavaScript requires at least jQuery v1.9.1 but less than v4.0.0');
            }
        }
    };
    Util.jQueryDetection();
    setTransitionEndSupport();

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

    var NAME = 'alert';
    var VERSION = '4.4.1';
    var DATA_KEY = 'bs.alert';
    var EVENT_KEY = "." + DATA_KEY;
    var DATA_API_KEY = '.data-api';
    var JQUERY_NO_CONFLICT = $.fn[NAME];
    var Selector = {
        DISMISS: '[data-dismiss="alert"]'
    };
    var Event = {
        CLOSE: "close" + EVENT_KEY,
        CLOSED: "closed" + EVENT_KEY,
        CLICK_DATA_API: "click" + EVENT_KEY + DATA_API_KEY
    };
    var ClassName = {
        ALERT: 'alert',
        FADE: 'fade',
        SHOW: 'show'
    };
    /**
     * ------------------------------------------------------------------------
     * Class Definition
     * ------------------------------------------------------------------------
     */

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

                this._removeElement(rootElement);
            };

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

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

                if (selector) {
                    parent = document.querySelector(selector);
                }

                if (!parent) {
                    parent = $(element).closest("." + ClassName.ALERT)[0];
                }

                return parent;
            };

            _proto._triggerCloseEvent = function _triggerCloseEvent (element) {
                var closeEvent = $.Event(Event.CLOSE);
                $(element).trigger(closeEvent);
                return closeEvent;
            };

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

                $(element).removeClass(ClassName.SHOW);

                if (!$(element).hasClass(ClassName.FADE)) {
                    this._destroyElement(element);

                    return;
                }

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

            _proto._destroyElement = function _destroyElement (element) {
                $(element).detach().trigger(Event.CLOSED).remove();
            } // Static
            ;

            Alert._jQueryInterface = function _jQueryInterface (config) {
                return this.each(function () {
                    var $element = $(this);
                    var data = $element.data(DATA_KEY);

                    if (!data) {
                        data = new Alert(this);
                        $element.data(DATA_KEY, data);
                    }

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

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

                    alertInstance.close(this);
                };
            };

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

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


    $(document).on(Event.CLICK_DATA_API, Selector.DISMISS, Alert._handleDismiss(new Alert()));
    /**
     * ------------------------------------------------------------------------
     * jQuery
     * ------------------------------------------------------------------------
     */

    $.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 = '4.4.1';
    var DATA_KEY$1 = 'bs.button';
    var EVENT_KEY$1 = "." + DATA_KEY$1;
    var DATA_API_KEY$1 = '.data-api';
    var JQUERY_NO_CONFLICT$1 = $.fn[NAME$1];
    var ClassName$1 = {
        ACTIVE: 'active',
        BUTTON: 'btn',
        FOCUS: 'focus'
    };
    var Selector$1 = {
        DATA_TOGGLE_CARROT: '[data-toggle^="button"]',
        DATA_TOGGLES: '[data-toggle="buttons"]',
        DATA_TOGGLE: '[data-toggle="button"]',
        DATA_TOGGLES_BUTTONS: '[data-toggle="buttons"] .btn',
        INPUT: 'input:not([type="hidden"])',
        ACTIVE: '.active',
        BUTTON: '.btn'
    };
    var Event$1 = {
        CLICK_DATA_API: "click" + EVENT_KEY$1 + DATA_API_KEY$1,
        FOCUS_BLUR_DATA_API: "focus" + EVENT_KEY$1 + DATA_API_KEY$1 + " " + ("blur" + EVENT_KEY$1 + DATA_API_KEY$1),
        LOAD_DATA_API: "load" + EVENT_KEY$1 + DATA_API_KEY$1
    };
    /**
     * ------------------------------------------------------------------------
     * Class Definition
     * ------------------------------------------------------------------------
     */

    var Button =
        /*#__PURE__*/
        function () {
            function Button (element) {
                this._element = element;
            } // Getters


            var _proto = Button.prototype;

            // Public
            _proto.toggle = function toggle () {
                var triggerChangeEvent = true;
                var addAriaPressed = true;
                var rootElement = $(this._element).closest(Selector$1.DATA_TOGGLES)[0];

                if (rootElement) {
                    var input = this._element.querySelector(Selector$1.INPUT);

                    if (input) {
                        if (input.type === 'radio') {
                            if (input.checked && this._element.classList.contains(ClassName$1.ACTIVE)) {
                                triggerChangeEvent = false;
                            } else {
                                var activeElement = rootElement.querySelector(Selector$1.ACTIVE);

                                if (activeElement) {
                                    $(activeElement).removeClass(ClassName$1.ACTIVE);
                                }
                            }
                        } else if (input.type === 'checkbox') {
                            if (this._element.tagName === 'LABEL' && input.checked === this._element.classList.contains(ClassName$1.ACTIVE)) {
                                triggerChangeEvent = false;
                            }
                        } else {
                            // if it's not a radio button or checkbox don't add a pointless/invalid checked property to the input
                            triggerChangeEvent = false;
                        }

                        if (triggerChangeEvent) {
                            input.checked = !this._element.classList.contains(ClassName$1.ACTIVE);
                            $(input).trigger('change');
                        }

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

                if (!(this._element.hasAttribute('disabled') || this._element.classList.contains('disabled'))) {
                    if (addAriaPressed) {
                        this._element.setAttribute('aria-pressed', !this._element.classList.contains(ClassName$1.ACTIVE));
                    }

                    if (triggerChangeEvent) {
                        $(this._element).toggleClass(ClassName$1.ACTIVE);
                    }
                }
            };

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

            Button._jQueryInterface = function _jQueryInterface (config) {
                return this.each(function () {
                    var data = $(this).data(DATA_KEY$1);

                    if (!data) {
                        data = new Button(this);
                        $(this).data(DATA_KEY$1, data);
                    }

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

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

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


    $(document).on(Event$1.CLICK_DATA_API, Selector$1.DATA_TOGGLE_CARROT, function (event) {
        var button = event.target;

        if (!$(button).hasClass(ClassName$1.BUTTON)) {
            button = $(button).closest(Selector$1.BUTTON)[0];
        }

        if (!button || button.hasAttribute('disabled') || button.classList.contains('disabled')) {
            event.preventDefault(); // work around Firefox bug #1540995
        } else {
            var inputBtn = button.querySelector(Selector$1.INPUT);

            if (inputBtn && (inputBtn.hasAttribute('disabled') || inputBtn.classList.contains('disabled'))) {
                event.preventDefault(); // work around Firefox bug #1540995

                return;
            }

            Button._jQueryInterface.call($(button), 'toggle');
        }
    }).on(Event$1.FOCUS_BLUR_DATA_API, Selector$1.DATA_TOGGLE_CARROT, function (event) {
        var button = $(event.target).closest(Selector$1.BUTTON)[0];
        $(button).toggleClass(ClassName$1.FOCUS, /^focus(in)?$/.test(event.type));
    });
    $(window).on(Event$1.LOAD_DATA_API, function () {
        // ensure correct active class is set to match the controls' actual values/states
        // find all checkboxes/readio buttons inside data-toggle groups
        var buttons = [].slice.call(document.querySelectorAll(Selector$1.DATA_TOGGLES_BUTTONS));

        for (var i = 0, len = buttons.length; i < len; i++) {
            var button = buttons[i];
            var input = button.querySelector(Selector$1.INPUT);

            if (input.checked || input.hasAttribute('checked')) {
                button.classList.add(ClassName$1.ACTIVE);
            } else {
                button.classList.remove(ClassName$1.ACTIVE);
            }
        } // find all button toggles


        buttons = [].slice.call(document.querySelectorAll(Selector$1.DATA_TOGGLE));

        for (var _i = 0, _len = buttons.length; _i < _len; _i++) {
            var _button = buttons[_i];

            if (_button.getAttribute('aria-pressed') === 'true') {
                _button.classList.add(ClassName$1.ACTIVE);
            } else {
                _button.classList.remove(ClassName$1.ACTIVE);
            }
        }
    });
    /**
     * ------------------------------------------------------------------------
     * jQuery
     * ------------------------------------------------------------------------
     */

    $.fn[NAME$1] = Button._jQueryInterface;
    $.fn[NAME$1].Constructor = Button;

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

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

    var NAME$2 = 'carousel';
    var VERSION$2 = '4.4.1';
    var DATA_KEY$2 = 'bs.carousel';
    var EVENT_KEY$2 = "." + DATA_KEY$2;
    var DATA_API_KEY$2 = '.data-api';
    var JQUERY_NO_CONFLICT$2 = $.fn[NAME$2];
    var ARROW_LEFT_KEYCODE = 37; // KeyboardEvent.which value for left arrow key

    var ARROW_RIGHT_KEYCODE = 39; // KeyboardEvent.which value for right arrow key

    var TOUCHEVENT_COMPAT_WAIT = 500; // Time for mouse compat events to fire after touch

    var SWIPE_THRESHOLD = 40;
    var Default = {
        interval: 5000,
        keyboard: true,
        slide: false,
        pause: 'hover',
        wrap: true,
        touch: true
    };
    var DefaultType = {
        interval: '(number|boolean)',
        keyboard: 'boolean',
        slide: '(boolean|string)',
        pause: '(string|boolean)',
        wrap: 'boolean',
        touch: 'boolean'
    };
    var Direction = {
        NEXT: 'next',
        PREV: 'prev',
        LEFT: 'left',
        RIGHT: 'right'
    };
    var Event$2 = {
        SLIDE: "slide" + EVENT_KEY$2,
        SLID: "slid" + EVENT_KEY$2,
        KEYDOWN: "keydown" + EVENT_KEY$2,
        MOUSEENTER: "mouseenter" + EVENT_KEY$2,
        MOUSELEAVE: "mouseleave" + EVENT_KEY$2,
        TOUCHSTART: "touchstart" + EVENT_KEY$2,
        TOUCHMOVE: "touchmove" + EVENT_KEY$2,
        TOUCHEND: "touchend" + EVENT_KEY$2,
        POINTERDOWN: "pointerdown" + EVENT_KEY$2,
        POINTERUP: "pointerup" + EVENT_KEY$2,
        DRAG_START: "dragstart" + EVENT_KEY$2,
        LOAD_DATA_API: "load" + EVENT_KEY$2 + DATA_API_KEY$2,
        CLICK_DATA_API: "click" + EVENT_KEY$2 + DATA_API_KEY$2
    };
    var ClassName$2 = {
        CAROUSEL: 'carousel',
        ACTIVE: 'active',
        SLIDE: 'slide',
        RIGHT: 'carousel-item-right',
        LEFT: 'carousel-item-left',
        NEXT: 'carousel-item-next',
        PREV: 'carousel-item-prev',
        ITEM: 'carousel-item',
        POINTER_EVENT: 'pointer-event'
    };
    var Selector$2 = {
        ACTIVE: '.active',
        ACTIVE_ITEM: '.active.carousel-item',
        ITEM: '.carousel-item',
        ITEM_IMG: '.carousel-item img',
        NEXT_PREV: '.carousel-item-next, .carousel-item-prev',
        INDICATORS: '.carousel-indicators',
        DATA_SLIDE: '[data-slide], [data-slide-to]',
        DATA_RIDE: '[data-ride="carousel"]'
    };
    var PointerType = {
        TOUCH: 'touch',
        PEN: 'pen'
    };
    /**
     * ------------------------------------------------------------------------
     * Class Definition
     * ------------------------------------------------------------------------
     */

    var Carousel =
        /*#__PURE__*/
        function () {
            function Carousel (element, config) {
                this._items = null;
                this._interval = null;
                this._activeElement = null;
                this._isPaused = false;
                this._isSliding = false;
                this.touchTimeout = null;
                this.touchStartX = 0;
                this.touchDeltaX = 0;
                this._config = this._getConfig(config);
                this._element = element;
                this._indicatorsElement = this._element.querySelector(Selector$2.INDICATORS);
                this._touchSupported = 'ontouchstart' in document.documentElement || navigator.maxTouchPoints > 0;
                this._pointerEvent = Boolean(window.PointerEvent || window.MSPointerEvent);

                this._addEventListeners();
            } // Getters


            var _proto = Carousel.prototype;

            // Public
            _proto.next = function next () {
                if (!this._isSliding) {
                    this._slide(Direction.NEXT);
                }
            };

            _proto.nextWhenVisible = function nextWhenVisible () {
                // Don't call next when the page isn't visible
                // or the carousel or its parent isn't visible
                if (!document.hidden && $(this._element).is(':visible') && $(this._element).css('visibility') !== 'hidden') {
                    this.next();
                }
            };

            _proto.prev = function prev () {
                if (!this._isSliding) {
                    this._slide(Direction.PREV);
                }
            };

            _proto.pause = function pause (event) {
                if (!event) {
                    this._isPaused = true;
                }

                if (this._element.querySelector(Selector$2.NEXT_PREV)) {
                    Util.triggerTransitionEnd(this._element);
                    this.cycle(true);
                }

                clearInterval(this._interval);
                this._interval = null;
            };

            _proto.cycle = function cycle (event) {
                if (!event) {
                    this._isPaused = false;
                }

                if (this._interval) {
                    clearInterval(this._interval);
                    this._interval = null;
                }

                if (this._config.interval && !this._isPaused) {
                    this._interval = setInterval((document.visibilityState ? this.nextWhenVisible : this.next).bind(this), this._config.interval);
                }
            };

            _proto.to = function to (index) {
                var _this = this;

                this._activeElement = this._element.querySelector(Selector$2.ACTIVE_ITEM);

                var activeIndex = this._getItemIndex(this._activeElement);

                if (index > this._items.length - 1 || index < 0) {
                    return;
                }

                if (this._isSliding) {
                    $(this._element).one(Event$2.SLID, function () {
                        return _this.to(index);
                    });
                    return;
                }

                if (activeIndex === index) {
                    this.pause();
                    this.cycle();
                    return;
                }

                var direction = index > activeIndex ? Direction.NEXT : Direction.PREV;

                this._slide(direction, this._items[index]);
            };

            _proto.dispose = function dispose () {
                $(this._element).off(EVENT_KEY$2);
                $.removeData(this._element, DATA_KEY$2);
                this._items = null;
                this._config = null;
                this._element = null;
                this._interval = null;
                this._isPaused = null;
                this._isSliding = null;
                this._activeElement = null;
                this._indicatorsElement = null;
            } // Private
            ;

            _proto._getConfig = function _getConfig (config) {
                config = _objectSpread2({}, Default, {}, config);
                Util.typeCheckConfig(NAME$2, config, DefaultType);
                return config;
            };

            _proto._handleSwipe = function _handleSwipe () {
                var absDeltax = Math.abs(this.touchDeltaX);

                if (absDeltax <= SWIPE_THRESHOLD) {
                    return;
                }

                var direction = absDeltax / this.touchDeltaX;
                this.touchDeltaX = 0; // swipe left

                if (direction > 0) {
                    this.prev();
                } // swipe right


                if (direction < 0) {
                    this.next();
                }
            };

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

                if (this._config.keyboard) {
                    $(this._element).on(Event$2.KEYDOWN, function (event) {
                        return _this2._keydown(event);
                    });
                }

                if (this._config.pause === 'hover') {
                    $(this._element).on(Event$2.MOUSEENTER, function (event) {
                        return _this2.pause(event);
                    }).on(Event$2.MOUSELEAVE, function (event) {
                        return _this2.cycle(event);
                    });
                }

                if (this._config.touch) {
                    this._addTouchEventListeners();
                }
            };

            _proto._addTouchEventListeners = function _addTouchEventListeners () {
                var _this3 = this;

                if (!this._touchSupported) {
                    return;
                }

                var start = function start (event) {
                    if (_this3._pointerEvent && PointerType[event.originalEvent.pointerType.toUpperCase()]) {
                        _this3.touchStartX = event.originalEvent.clientX;
                    } else if (!_this3._pointerEvent) {
                        _this3.touchStartX = event.originalEvent.touches[0].clientX;
                    }
                };

                var move = function move (event) {
                    // ensure swiping with one touch and not pinching
                    if (event.originalEvent.touches && event.originalEvent.touches.length > 1) {
                        _this3.touchDeltaX = 0;
                    } else {
                        _this3.touchDeltaX = event.originalEvent.touches[0].clientX - _this3.touchStartX;
                    }
                };

                var end = function end (event) {
                    if (_this3._pointerEvent && PointerType[event.originalEvent.pointerType.toUpperCase()]) {
                        _this3.touchDeltaX = event.originalEvent.clientX - _this3.touchStartX;
                    }

                    _this3._handleSwipe();

                    if (_this3._config.pause === 'hover') {
                        // If it's a touch-enabled device, mouseenter/leave are fired as
                        // part of the mouse compatibility events on first tap - the carousel
                        // would stop cycling until user tapped out of it;
                        // here, we listen for touchend, explicitly pause the carousel
                        // (as if it's the second time we tap on it, mouseenter compat event
                        // is NOT fired) and after a timeout (to allow for mouse compatibility
                        // events to fire) we explicitly restart cycling
                        _this3.pause();

                        if (_this3.touchTimeout) {
                            clearTimeout(_this3.touchTimeout);
                        }

                        _this3.touchTimeout = setTimeout(function (event) {
                            return _this3.cycle(event);
                        }, TOUCHEVENT_COMPAT_WAIT + _this3._config.interval);
                    }
                };

                $(this._element.querySelectorAll(Selector$2.ITEM_IMG)).on(Event$2.DRAG_START, function (e) {
                    return e.preventDefault();
                });

                if (this._pointerEvent) {
                    $(this._element).on(Event$2.POINTERDOWN, function (event) {
                        return start(event);
                    });
                    $(this._element).on(Event$2.POINTERUP, function (event) {
                        return end(event);
                    });

                    this._element.classList.add(ClassName$2.POINTER_EVENT);
                } else {
                    $(this._element).on(Event$2.TOUCHSTART, function (event) {
                        return start(event);
                    });
                    $(this._element).on(Event$2.TOUCHMOVE, function (event) {
                        return move(event);
                    });
                    $(this._element).on(Event$2.TOUCHEND, function (event) {
                        return end(event);
                    });
                }
            };

            _proto._keydown = function _keydown (event) {
                if (/input|textarea/i.test(event.target.tagName)) {
                    return;
                }

                switch (event.which) {
                    case ARROW_LEFT_KEYCODE:
                        event.preventDefault();
                        this.prev();
                        break;

                    case ARROW_RIGHT_KEYCODE:
                        event.preventDefault();
                        this.next();
                        break;
                }
            };

            _proto._getItemIndex = function _getItemIndex (element) {
                this._items = element && element.parentNode ? [].slice.call(element.parentNode.querySelectorAll(Selector$2.ITEM)) : [];
                return this._items.indexOf(element);
            };

            _proto._getItemByDirection = function _getItemByDirection (direction, activeElement) {
                var isNextDirection = direction === Direction.NEXT;
                var isPrevDirection = direction === Direction.PREV;

                var activeIndex = this._getItemIndex(activeElement);

                var lastItemIndex = this._items.length - 1;
                var isGoingToWrap = isPrevDirection && activeIndex === 0 || isNextDirection && activeIndex === lastItemIndex;

                if (isGoingToWrap && !this._config.wrap) {
                    return activeElement;
                }

                var delta = direction === Direction.PREV ? -1 : 1;
                var itemIndex = (activeIndex + delta) % this._items.length;
                return itemIndex === -1 ? this._items[this._items.length - 1] : this._items[itemIndex];
            };

            _proto._triggerSlideEvent = function _triggerSlideEvent (relatedTarget, eventDirectionName) {
                var targetIndex = this._getItemIndex(relatedTarget);

                var fromIndex = this._getItemIndex(this._element.querySelector(Selector$2.ACTIVE_ITEM));

                var slideEvent = $.Event(Event$2.SLIDE, {
                    relatedTarget: relatedTarget,
                    direction: eventDirectionName,
                    from: fromIndex,
                    to: targetIndex
                });
                $(this._element).trigger(slideEvent);
                return slideEvent;
            };

            _proto._setActiveIndicatorElement = function _setActiveIndicatorElement (element) {
                if (this._indicatorsElement) {
                    var indicators = [].slice.call(this._indicatorsElement.querySelectorAll(Selector$2.ACTIVE));
                    $(indicators).removeClass(ClassName$2.ACTIVE);

                    var nextIndicator = this._indicatorsElement.children[this._getItemIndex(element)];

                    if (nextIndicator) {
                        $(nextIndicator).addClass(ClassName$2.ACTIVE);
                    }
                }
            };

            _proto._slide = function _slide (direction, element) {
                var _this4 = this;

                var activeElement = this._element.querySelector(Selector$2.ACTIVE_ITEM);

                var activeElementIndex = this._getItemIndex(activeElement);

                var nextElement = element || activeElement && this._getItemByDirection(direction, activeElement);

                var nextElementIndex = this._getItemIndex(nextElement);

                var isCycling = Boolean(this._interval);
                var directionalClassName;
                var orderClassName;
                var eventDirectionName;

                if (direction === Direction.NEXT) {
                    directionalClassName = ClassName$2.LEFT;
                    orderClassName = ClassName$2.NEXT;
                    eventDirectionName = Direction.LEFT;
                } else {
                    directionalClassName = ClassName$2.RIGHT;
                    orderClassName = ClassName$2.PREV;
                    eventDirectionName = Direction.RIGHT;
                }

                if (nextElement && $(nextElement).hasClass(ClassName$2.ACTIVE)) {
                    this._isSliding = false;
                    return;
                }

                var slideEvent = this._triggerSlideEvent(nextElement, eventDirectionName);

                if (slideEvent.isDefaultPrevented()) {
                    return;
                }

                if (!activeElement || !nextElement) {
                    // Some weirdness is happening, so we bail
                    return;
                }

                this._isSliding = true;

                if (isCycling) {
                    this.pause();
                }

                this._setActiveIndicatorElement(nextElement);

                var slidEvent = $.Event(Event$2.SLID, {
                    relatedTarget: nextElement,
                    direction: eventDirectionName,
                    from: activeElementIndex,
                    to: nextElementIndex
                });

                if ($(this._element).hasClass(ClassName$2.SLIDE)) {
                    $(nextElement).addClass(orderClassName);
                    Util.reflow(nextElement);
                    $(activeElement).addClass(directionalClassName);
                    $(nextElement).addClass(directionalClassName);
                    var nextElementInterval = parseInt(nextElement.getAttribute('data-interval'), 10);

                    if (nextElementInterval) {
                        this._config.defaultInterval = this._config.defaultInterval || this._config.interval;
                        this._config.interval = nextElementInterval;
                    } else {
                        this._config.interval = this._config.defaultInterval || this._config.interval;
                    }

                    var transitionDuration = Util.getTransitionDurationFromElement(activeElement);
                    $(activeElement).one(Util.TRANSITION_END, function () {
                        $(nextElement).removeClass(directionalClassName + " " + orderClassName).addClass(ClassName$2.ACTIVE);
                        $(activeElement).removeClass(ClassName$2.ACTIVE + " " + orderClassName + " " + directionalClassName);
                        _this4._isSliding = false;
                        setTimeout(function () {
                            return $(_this4._element).trigger(slidEvent);
                        }, 0);
                    }).emulateTransitionEnd(transitionDuration);
                } else {
                    $(activeElement).removeClass(ClassName$2.ACTIVE);
                    $(nextElement).addClass(ClassName$2.ACTIVE);
                    this._isSliding = false;
                    $(this._element).trigger(slidEvent);
                }

                if (isCycling) {
                    this.cycle();
                }
            } // Static
            ;

            Carousel._jQueryInterface = function _jQueryInterface (config) {
                return this.each(function () {
                    var data = $(this).data(DATA_KEY$2);

                    var _config = _objectSpread2({}, Default, {}, $(this).data());

                    if (typeof config === 'object') {
                        _config = _objectSpread2({}, _config, {}, config);
                    }

                    var action = typeof config === 'string' ? config : _config.slide;

                    if (!data) {
                        data = new Carousel(this, _config);
                        $(this).data(DATA_KEY$2, data);
                    }

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

                        data[action]();
                    } else if (_config.interval && _config.ride) {
                        data.pause();
                        data.cycle();
                    }
                });
            };

            Carousel._dataApiClickHandler = function _dataApiClickHandler (event) {
                var selector = Util.getSelectorFromElement(this);

                if (!selector) {
                    return;
                }

                var target = $(selector)[0];

                if (!target || !$(target).hasClass(ClassName$2.CAROUSEL)) {
                    return;
                }

                var config = _objectSpread2({}, $(target).data(), {}, $(this).data());

                var slideIndex = this.getAttribute('data-slide-to');

                if (slideIndex) {
                    config.interval = false;
                }

                Carousel._jQueryInterface.call($(target), config);

                if (slideIndex) {
                    $(target).data(DATA_KEY$2).to(slideIndex);
                }

                event.preventDefault();
            };

            _createClass(Carousel, null, [{
                key: "VERSION",
                get: function get () {
                    return VERSION$2;
                }
            }, {
                key: "Default",
                get: function get () {
                    return Default;
                }
            }]);

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


    $(document).on(Event$2.CLICK_DATA_API, Selector$2.DATA_SLIDE, Carousel._dataApiClickHandler);
    $(window).on(Event$2.LOAD_DATA_API, function () {
        var carousels = [].slice.call(document.querySelectorAll(Selector$2.DATA_RIDE));

        for (var i = 0, len = carousels.length; i < len; i++) {
            var $carousel = $(carousels[i]);

            Carousel._jQueryInterface.call($carousel, $carousel.data());
        }
    });
    /**
     * ------------------------------------------------------------------------
     * jQuery
     * ------------------------------------------------------------------------
     */

    $.fn[NAME$2] = Carousel._jQueryInterface;
    $.fn[NAME$2].Constructor = Carousel;

    $.fn[NAME$2].noConflict = function () {
        $.fn[NAME$2] = JQUERY_NO_CONFLICT$2;
        return Carousel._jQueryInterface;
    };

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

    var NAME$3 = 'collapse';
    var VERSION$3 = '4.4.1';
    var DATA_KEY$3 = 'bs.collapse';
    var EVENT_KEY$3 = "." + DATA_KEY$3;
    var DATA_API_KEY$3 = '.data-api';
    var JQUERY_NO_CONFLICT$3 = $.fn[NAME$3];
    var Default$1 = {
        toggle: true,
        parent: ''
    };
    var DefaultType$1 = {
        toggle: 'boolean',
        parent: '(string|element)'
    };
    var Event$3 = {
        SHOW: "show" + EVENT_KEY$3,
        SHOWN: "shown" + EVENT_KEY$3,
        HIDE: "hide" + EVENT_KEY$3,
        HIDDEN: "hidden" + EVENT_KEY$3,
        CLICK_DATA_API: "click" + EVENT_KEY$3 + DATA_API_KEY$3
    };
    var ClassName$3 = {
        SHOW: 'show',
        COLLAPSE: 'collapse',
        COLLAPSING: 'collapsing',
        COLLAPSED: 'collapsed'
    };
    var Dimension = {
        WIDTH: 'width',
        HEIGHT: 'height'
    };
    var Selector$3 = {
        ACTIVES: '.show, .collapsing',
        DATA_TOGGLE: '[data-toggle="collapse"]'
    };
    /**
     * ------------------------------------------------------------------------
     * Class Definition
     * ------------------------------------------------------------------------
     */

    var Collapse =
        /*#__PURE__*/
        function () {
            function Collapse (element, config) {
                this._isTransitioning = false;
                this._element = element;
                this._config = this._getConfig(config);
                this._triggerArray = [].slice.call(document.querySelectorAll("[data-toggle=\"collapse\"][href=\"#" + element.id + "\"]," + ("[data-toggle=\"collapse\"][data-target=\"#" + element.id + "\"]")));
                var toggleList = [].slice.call(document.querySelectorAll(Selector$3.DATA_TOGGLE));

                for (var i = 0, len = toggleList.length; i < len; i++) {
                    var elem = toggleList[i];
                    var selector = Util.getSelectorFromElement(elem);
                    var filterElement = [].slice.call(document.querySelectorAll(selector)).filter(function (foundElem) {
                        return foundElem === element;
                    });

                    if (selector !== null && filterElement.length > 0) {
                        this._selector = selector;

                        this._triggerArray.push(elem);
                    }
                }

                this._parent = this._config.parent ? this._getParent() : null;

                if (!this._config.parent) {
                    this._addAriaAndCollapsedClass(this._element, this._triggerArray);
                }

                if (this._config.toggle) {
                    this.toggle();
                }
            } // Getters


            var _proto = Collapse.prototype;

            // Public
            _proto.toggle = function toggle () {
                if ($(this._element).hasClass(ClassName$3.SHOW)) {
                    this.hide();
                } else {
                    this.show();
                }
            };

            _proto.show = function show () {
                var _this = this;

                if (this._isTransitioning || $(this._element).hasClass(ClassName$3.SHOW)) {
                    return;
                }

                var actives;
                var activesData;

                if (this._parent) {
                    actives = [].slice.call(this._parent.querySelectorAll(Selector$3.ACTIVES)).filter(function (elem) {
                        if (typeof _this._config.parent === 'string') {
                            return elem.getAttribute('data-parent') === _this._config.parent;
                        }

                        return elem.classList.contains(ClassName$3.COLLAPSE);
                    });

                    if (actives.length === 0) {
                        actives = null;
                    }
                }

                if (actives) {
                    activesData = $(actives).not(this._selector).data(DATA_KEY$3);

                    if (activesData && activesData._isTransitioning) {
                        return;
                    }
                }

                var startEvent = $.Event(Event$3.SHOW);
                $(this._element).trigger(startEvent);

                if (startEvent.isDefaultPrevented()) {
                    return;
                }

                if (actives) {
                    Collapse._jQueryInterface.call($(actives).not(this._selector), 'hide');

                    if (!activesData) {
                        $(actives).data(DATA_KEY$3, null);
                    }
                }

                var dimension = this._getDimension();

                $(this._element).removeClass(ClassName$3.COLLAPSE).addClass(ClassName$3.COLLAPSING);
                this._element.style[dimension] = 0;

                if (this._triggerArray.length) {
                    $(this._triggerArray).removeClass(ClassName$3.COLLAPSED).attr('aria-expanded', true);
                }

                this.setTransitioning(true);

                var complete = function complete () {
                    $(_this._element).removeClass(ClassName$3.COLLAPSING).addClass(ClassName$3.COLLAPSE).addClass(ClassName$3.SHOW);
                    _this._element.style[dimension] = '';

                    _this.setTransitioning(false);

                    $(_this._element).trigger(Event$3.SHOWN);
                };

                var capitalizedDimension = dimension[0].toUpperCase() + dimension.slice(1);
                var scrollSize = "scroll" + capitalizedDimension;
                var transitionDuration = Util.getTransitionDurationFromElement(this._element);
                $(this._element).one(Util.TRANSITION_END, complete).emulateTransitionEnd(transitionDuration);
                this._element.style[dimension] = this._element[scrollSize] + "px";
            };

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

                if (this._isTransitioning || !$(this._element).hasClass(ClassName$3.SHOW)) {
                    return;
                }

                var startEvent = $.Event(Event$3.HIDE);
                $(this._element).trigger(startEvent);

                if (startEvent.isDefaultPrevented()) {
                    return;
                }

                var dimension = this._getDimension();

                this._element.style[dimension] = this._element.getBoundingClientRect()[dimension] + "px";
                Util.reflow(this._element);
                $(this._element).addClass(ClassName$3.COLLAPSING).removeClass(ClassName$3.COLLAPSE).removeClass(ClassName$3.SHOW);
                var triggerArrayLength = this._triggerArray.length;

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

                        if (selector !== null) {
                            var $elem = $([].slice.call(document.querySelectorAll(selector)));

                            if (!$elem.hasClass(ClassName$3.SHOW)) {
                                $(trigger).addClass(ClassName$3.COLLAPSED).attr('aria-expanded', false);
                            }
                        }
                    }
                }

                this.setTransitioning(true);

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

                    $(_this2._element).removeClass(ClassName$3.COLLAPSING).addClass(ClassName$3.COLLAPSE).trigger(Event$3.HIDDEN);
                };

                this._element.style[dimension] = '';
                var transitionDuration = Util.getTransitionDurationFromElement(this._element);
                $(this._element).one(Util.TRANSITION_END, complete).emulateTransitionEnd(transitionDuration);
            };

            _proto.setTransitioning = function setTransitioning (isTransitioning) {
                this._isTransitioning = isTransitioning;
            };

            _proto.dispose = function dispose () {
                $.removeData(this._element, DATA_KEY$3);
                this._config = null;
                this._parent = null;
                this._element = null;
                this._triggerArray = null;
                this._isTransitioning = null;
            } // Private
            ;

            _proto._getConfig = function _getConfig (config) {
                config = _objectSpread2({}, Default$1, {}, config);
                config.toggle = Boolean(config.toggle); // Coerce string values

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

            _proto._getDimension = function _getDimension () {
                var hasWidth = $(this._element).hasClass(Dimension.WIDTH);
                return hasWidth ? Dimension.WIDTH : Dimension.HEIGHT;
            };

            _proto._getParent = function _getParent () {
                var _this3 = this;

                var parent;

                if (Util.isElement(this._config.parent)) {
                    parent = this._config.parent; // It's a jQuery object

                    if (typeof this._config.parent.jquery !== 'undefined') {
                        parent = this._config.parent[0];
                    }
                } else {
                    parent = document.querySelector(this._config.parent);
                }

                var selector = "[data-toggle=\"collapse\"][data-parent=\"" + this._config.parent + "\"]";
                var children = [].slice.call(parent.querySelectorAll(selector));
                $(children).each(function (i, element) {
                    _this3._addAriaAndCollapsedClass(Collapse._getTargetFromElement(element), [element]);
                });
                return parent;
            };

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

                if (triggerArray.length) {
                    $(triggerArray).toggleClass(ClassName$3.COLLAPSED, !isOpen).attr('aria-expanded', isOpen);
                }
            } // Static
            ;

            Collapse._getTargetFromElement = function _getTargetFromElement (element) {
                var selector = Util.getSelectorFromElement(element);
                return selector ? document.querySelector(selector) : null;
            };

            Collapse._jQueryInterface = function _jQueryInterface (config) {
                return this.each(function () {
                    var $this = $(this);
                    var data = $this.data(DATA_KEY$3);

                    var _config = _objectSpread2({}, Default$1, {}, $this.data(), {}, typeof config === 'object' && config ? config : {});

                    if (!data && _config.toggle && /show|hide/.test(config)) {
                        _config.toggle = false;
                    }

                    if (!data) {
                        data = new Collapse(this, _config);
                        $this.data(DATA_KEY$3, data);
                    }

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

                        data[config]();
                    }
                });
            };

            _createClass(Collapse, null, [{
                key: "VERSION",
                get: function get () {
                    return VERSION$3;
                }
            }, {
                key: "Default",
                get: function get () {
                    return Default$1;
                }
            }]);

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


    $(document).on(Event$3.CLICK_DATA_API, Selector$3.DATA_TOGGLE, function (event) {
        // preventDefault only for <a> elements (which change the URL) not inside the collapsible element
        if (event.currentTarget.tagName === 'A') {
            event.preventDefault();
        }

        var $trigger = $(this);
        var selector = Util.getSelectorFromElement(this);
        var selectors = [].slice.call(document.querySelectorAll(selector));
        $(selectors).each(function () {
            var $target = $(this);
            var data = $target.data(DATA_KEY$3);
            var config = data ? 'toggle' : $trigger.data();

            Collapse._jQueryInterface.call($target, config);
        });
    });
    /**
     * ------------------------------------------------------------------------
     * jQuery
     * ------------------------------------------------------------------------
     */

    $.fn[NAME$3] = Collapse._jQueryInterface;
    $.fn[NAME$3].Constructor = Collapse;

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

    /**!
     * @fileOverview Kickass library to create and place poppers near their reference elements.
     * @version 1.16.0
     * @license
     * Copyright (c) 2016 Federico Zivolo and contributors
     *
     * Permission is hereby granted, free of charge, to any person obtaining a copy
     * of this software and associated documentation files (the "Software"), to deal
     * in the Software without restriction, including without limitation the rights
     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     * copies of the Software, and to permit persons to whom the Software is
     * furnished to do so, subject to the following conditions:
     *
     * The above copyright notice and this permission notice shall be included in all
     * copies or substantial portions of the Software.
     *
     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
     * SOFTWARE.
     */
    var isBrowser = typeof window !== 'undefined' && typeof document !== 'undefined' && typeof navigator !== 'undefined';

    var timeoutDuration = function () {
        var longerTimeoutBrowsers = ['Edge', 'Trident', 'Firefox'];
        for (var i = 0; i < longerTimeoutBrowsers.length; i += 1) {
            if (isBrowser && navigator.userAgent.indexOf(longerTimeoutBrowsers[i]) >= 0) {
                return 1;
            }
        }
        return 0;
    }();

    function microtaskDebounce (fn) {
        var called = false;
        return function () {
            if (called) {
                return;
            }
            called = true;
            window.Promise.resolve().then(function () {
                called = false;
                fn();
            });
        };
    }

    function taskDebounce (fn) {
        var scheduled = false;
        return function () {
            if (!scheduled) {
                scheduled = true;
                setTimeout(function () {
                    scheduled = false;
                    fn();
                }, timeoutDuration);
            }
        };
    }

    var supportsMicroTasks = isBrowser && window.Promise;

    /**
     * Create a debounced version of a method, that's asynchronously deferred
     * but called in the minimum time possible.
     *
     * @method
     * @memberof Popper.Utils
     * @argument {Function} fn
     * @returns {Function}
     */
    var debounce = supportsMicroTasks ? microtaskDebounce : taskDebounce;

    /**
     * Check if the given variable is a function
     * @method
     * @memberof Popper.Utils
     * @argument {Any} functionToCheck - variable to check
     * @returns {Boolean} answer to: is a function?
     */
    function isFunction (functionToCheck) {
        var getType = {};
        return functionToCheck && getType.toString.call(functionToCheck) === '[object Function]';
    }

    /**
     * Get CSS computed property of the given element
     * @method
     * @memberof Popper.Utils
     * @argument {Eement} element
     * @argument {String} property
     */
    function getStyleComputedProperty (element, property) {
        if (element.nodeType !== 1) {
            return [];
        }
        // NOTE: 1 DOM access here
        var window = element.ownerDocument.defaultView;
        var css = window.getComputedStyle(element, null);
        return property ? css[property] : css;
    }

    /**
     * Returns the parentNode or the host of the element
     * @method
     * @memberof Popper.Utils
     * @argument {Element} element
     * @returns {Element} parent
     */
    function getParentNode (element) {
        if (element.nodeName === 'HTML') {
            return element;
        }
        return element.parentNode || element.host;
    }

    /**
     * Returns the scrolling parent of the given element
     * @method
     * @memberof Popper.Utils
     * @argument {Element} element
     * @returns {Element} scroll parent
     */
    function getScrollParent (element) {
        // Return body, `getScroll` will take care to get the correct `scrollTop` from it
        if (!element) {
            return document.body;
        }

        switch (element.nodeName) {
            case 'HTML':
            case 'BODY':
                return element.ownerDocument.body;
            case '#document':
                return element.body;
        }

        // Firefox want us to check `-x` and `-y` variations as well

        var _getStyleComputedProp = getStyleComputedProperty(element),
            overflow = _getStyleComputedProp.overflow,
            overflowX = _getStyleComputedProp.overflowX,
            overflowY = _getStyleComputedProp.overflowY;

        if (/(auto|scroll|overlay)/.test(overflow + overflowY + overflowX)) {
            return element;
        }

        return getScrollParent(getParentNode(element));
    }

    /**
     * Returns the reference node of the reference object, or the reference object itself.
     * @method
     * @memberof Popper.Utils
     * @param {Element|Object} reference - the reference element (the popper will be relative to this)
     * @returns {Element} parent
     */
    function getReferenceNode (reference) {
        return reference && reference.referenceNode ? reference.referenceNode : reference;
    }

    var isIE11 = isBrowser && !!(window.MSInputMethodContext && document.documentMode);
    var isIE10 = isBrowser && /MSIE 10/.test(navigator.userAgent);

    /**
     * Determines if the browser is Internet Explorer
     * @method
     * @memberof Popper.Utils
     * @param {Number} version to check
     * @returns {Boolean} isIE
     */
    function isIE (version) {
        if (version === 11) {
            return isIE11;
        }
        if (version === 10) {
            return isIE10;
        }
        return isIE11 || isIE10;
    }

    /**
     * Returns the offset parent of the given element
     * @method
     * @memberof Popper.Utils
     * @argument {Element} element
     * @returns {Element} offset parent
     */
    function getOffsetParent (element) {
        if (!element) {
            return document.documentElement;
        }

        var noOffsetParent = isIE(10) ? document.body : null;

        // NOTE: 1 DOM access here
        var offsetParent = element.offsetParent || null;
        // Skip hidden elements which don't have an offsetParent
        while (offsetParent === noOffsetParent && element.nextElementSibling) {
            offsetParent = (element = element.nextElementSibling).offsetParent;
        }

        var nodeName = offsetParent && offsetParent.nodeName;

        if (!nodeName || nodeName === 'BODY' || nodeName === 'HTML') {
            return element ? element.ownerDocument.documentElement : document.documentElement;
        }

        // .offsetParent will return the closest TH, TD or TABLE in case
        // no offsetParent is present, I hate this job...
        if (['TH', 'TD', 'TABLE'].indexOf(offsetParent.nodeName) !== -1 && getStyleComputedProperty(offsetParent, 'position') === 'static') {
            return getOffsetParent(offsetParent);
        }

        return offsetParent;
    }

    function isOffsetContainer (element) {
        var nodeName = element.nodeName;

        if (nodeName === 'BODY') {
            return false;
        }
        return nodeName === 'HTML' || getOffsetParent(element.firstElementChild) === element;
    }

    /**
     * Finds the root node (document, shadowDOM root) of the given element
     * @method
     * @memberof Popper.Utils
     * @argument {Element} node
     * @returns {Element} root node
     */
    function getRoot (node) {
        if (node.parentNode !== null) {
            return getRoot(node.parentNode);
        }

        return node;
    }

    /**
     * Finds the offset parent common to the two provided nodes
     * @method
     * @memberof Popper.Utils
     * @argument {Element} element1
     * @argument {Element} element2
     * @returns {Element} common offset parent
     */
    function findCommonOffsetParent (element1, element2) {
        // This check is needed to avoid errors in case one of the elements isn't defined for any reason
        if (!element1 || !element1.nodeType || !element2 || !element2.nodeType) {
            return document.documentElement;
        }

        // Here we make sure to give as "start" the element that comes first in the DOM
        var order = element1.compareDocumentPosition(element2) & Node.DOCUMENT_POSITION_FOLLOWING;
        var start = order ? element1 : element2;
        var end = order ? element2 : element1;

        // Get common ancestor container
        var range = document.createRange();
        range.setStart(start, 0);
        range.setEnd(end, 0);
        var commonAncestorContainer = range.commonAncestorContainer;

        // Both nodes are inside #document

        if (element1 !== commonAncestorContainer && element2 !== commonAncestorContainer || start.contains(end)) {
            if (isOffsetContainer(commonAncestorContainer)) {
                return commonAncestorContainer;
            }

            return getOffsetParent(commonAncestorContainer);
        }

        // one of the nodes is inside shadowDOM, find which one
        var element1root = getRoot(element1);
        if (element1root.host) {
            return findCommonOffsetParent(element1root.host, element2);
        } else {
            return findCommonOffsetParent(element1, getRoot(element2).host);
        }
    }

    /**
     * Gets the scroll value of the given element in the given side (top and left)
     * @method
     * @memberof Popper.Utils
     * @argument {Element} element
     * @argument {String} side `top` or `left`
     * @returns {number} amount of scrolled pixels
     */
    function getScroll (element) {
        var side = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 'top';

        var upperSide = side === 'top' ? 'scrollTop' : 'scrollLeft';
        var nodeName = element.nodeName;

        if (nodeName === 'BODY' || nodeName === 'HTML') {
            var html = element.ownerDocument.documentElement;
            var scrollingElement = element.ownerDocument.scrollingElement || html;
            return scrollingElement[upperSide];
        }

        return element[upperSide];
    }

    /*
   * Sum or subtract the element scroll values (left and top) from a given rect object
   * @method
   * @memberof Popper.Utils
   * @param {Object} rect - Rect object you want to change
   * @param {HTMLElement} element - The element from the function reads the scroll values
   * @param {Boolean} subtract - set to true if you want to subtract the scroll values
   * @return {Object} rect - The modifier rect object
   */
    function includeScroll (rect, element) {
        var subtract = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;

        var scrollTop = getScroll(element, 'top');
        var scrollLeft = getScroll(element, 'left');
        var modifier = subtract ? -1 : 1;
        rect.top += scrollTop * modifier;
        rect.bottom += scrollTop * modifier;
        rect.left += scrollLeft * modifier;
        rect.right += scrollLeft * modifier;
        return rect;
    }

    /*
   * Helper to detect borders of a given element
   * @method
   * @memberof Popper.Utils
   * @param {CSSStyleDeclaration} styles
   * Result of `getStyleComputedProperty` on the given element
   * @param {String} axis - `x` or `y`
   * @return {number} borders - The borders size of the given axis
   */

    function getBordersSize (styles, axis) {
        var sideA = axis === 'x' ? 'Left' : 'Top';
        var sideB = sideA === 'Left' ? 'Right' : 'Bottom';

        return parseFloat(styles['border' + sideA + 'Width'], 10) + parseFloat(styles['border' + sideB + 'Width'], 10);
    }

    function getSize (axis, body, html, computedStyle) {
        return Math.max(body['offset' + axis], body['scroll' + axis], html['client' + axis], html['offset' + axis], html['scroll' + axis], isIE(10) ? parseInt(html['offset' + axis]) + parseInt(computedStyle['margin' + (axis === 'Height' ? 'Top' : 'Left')]) + parseInt(computedStyle['margin' + (axis === 'Height' ? 'Bottom' : 'Right')]) : 0);
    }

    function getWindowSizes (document) {
        var body = document.body;
        var html = document.documentElement;
        var computedStyle = isIE(10) && getComputedStyle(html);

        return {
            height: getSize('Height', body, html, computedStyle),
            width: getSize('Width', body, html, computedStyle)
        };
    }

    var classCallCheck = function (instance, Constructor) {
        if (!(instance instanceof Constructor)) {
            throw new TypeError("Cannot call a class as a function");
        }
    };

    var createClass = function () {
        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);
            }
        }

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


    var defineProperty = function (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;
    };

    var _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;
    };

    /**
     * Given element offsets, generate an output similar to getBoundingClientRect
     * @method
     * @memberof Popper.Utils
     * @argument {Object} offsets
     * @returns {Object} ClientRect like output
     */
    function getClientRect (offsets) {
        return _extends({}, offsets, {
            right: offsets.left + offsets.width,
            bottom: offsets.top + offsets.height
        });
    }

    /**
     * Get bounding client rect of given element
     * @method
     * @memberof Popper.Utils
     * @param {HTMLElement} element
     * @return {Object} client rect
     */
    function getBoundingClientRect (element) {
        var rect = {};

        // IE10 10 FIX: Please, don't ask, the element isn't
        // considered in DOM in some circumstances...
        // This isn't reproducible in IE10 compatibility mode of IE11
        try {
            if (isIE(10)) {
                rect = element.getBoundingClientRect();
                var scrollTop = getScroll(element, 'top');
                var scrollLeft = getScroll(element, 'left');
                rect.top += scrollTop;
                rect.left += scrollLeft;
                rect.bottom += scrollTop;
                rect.right += scrollLeft;
            } else {
                rect = element.getBoundingClientRect();
            }
        } catch (e) {
        }

        var result = {
            left: rect.left,
            top: rect.top,
            width: rect.right - rect.left,
            height: rect.bottom - rect.top
        };

        // subtract scrollbar size from sizes
        var sizes = element.nodeName === 'HTML' ? getWindowSizes(element.ownerDocument) : {};
        var width = sizes.width || element.clientWidth || result.width;
        var height = sizes.height || element.clientHeight || result.height;

        var horizScrollbar = element.offsetWidth - width;
        var vertScrollbar = element.offsetHeight - height;

        // if an hypothetical scrollbar is detected, we must be sure it's not a `border`
        // we make this check conditional for performance reasons
        if (horizScrollbar || vertScrollbar) {
            var styles = getStyleComputedProperty(element);
            horizScrollbar -= getBordersSize(styles, 'x');
            vertScrollbar -= getBordersSize(styles, 'y');

            result.width -= horizScrollbar;
            result.height -= vertScrollbar;
        }

        return getClientRect(result);
    }

    function getOffsetRectRelativeToArbitraryNode (children, parent) {
        var fixedPosition = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;

        var isIE10 = isIE(10);
        var isHTML = parent.nodeName === 'HTML';
        var childrenRect = getBoundingClientRect(children);
        var parentRect = getBoundingClientRect(parent);
        var scrollParent = getScrollParent(children);

        var styles = getStyleComputedProperty(parent);
        var borderTopWidth = parseFloat(styles.borderTopWidth, 10);
        var borderLeftWidth = parseFloat(styles.borderLeftWidth, 10);

        // In cases where the parent is fixed, we must ignore negative scroll in offset calc
        if (fixedPosition && isHTML) {
            parentRect.top = Math.max(parentRect.top, 0);
            parentRect.left = Math.max(parentRect.left, 0);
        }
        var offsets = getClientRect({
            top: childrenRect.top - parentRect.top - borderTopWidth,
            left: childrenRect.left - parentRect.left - borderLeftWidth,
            width: childrenRect.width,
            height: childrenRect.height
        });
        offsets.marginTop = 0;
        offsets.marginLeft = 0;

        // Subtract margins of documentElement in case it's being used as parent
        // we do this only on HTML because it's the only element that behaves
        // differently when margins are applied to it. The margins are included in
        // the box of the documentElement, in the other cases not.
        if (!isIE10 && isHTML) {
            var marginTop = parseFloat(styles.marginTop, 10);
            var marginLeft = parseFloat(styles.marginLeft, 10);

            offsets.top -= borderTopWidth - marginTop;
            offsets.bottom -= borderTopWidth - marginTop;
            offsets.left -= borderLeftWidth - marginLeft;
            offsets.right -= borderLeftWidth - marginLeft;

            // Attach marginTop and marginLeft because in some circumstances we may need them
            offsets.marginTop = marginTop;
            offsets.marginLeft = marginLeft;
        }

        if (isIE10 && !fixedPosition ? parent.contains(scrollParent) : parent === scrollParent && scrollParent.nodeName !== 'BODY') {
            offsets = includeScroll(offsets, parent);
        }

        return offsets;
    }

    function getViewportOffsetRectRelativeToArtbitraryNode (element) {
        var excludeScroll = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;

        var html = element.ownerDocument.documentElement;
        var relativeOffset = getOffsetRectRelativeToArbitraryNode(element, html);
        var width = Math.max(html.clientWidth, window.innerWidth || 0);
        var height = Math.max(html.clientHeight, window.innerHeight || 0);

        var scrollTop = !excludeScroll ? getScroll(html) : 0;
        var scrollLeft = !excludeScroll ? getScroll(html, 'left') : 0;

        var offset = {
            top: scrollTop - relativeOffset.top + relativeOffset.marginTop,
            left: scrollLeft - relativeOffset.left + relativeOffset.marginLeft,
            width: width,
            height: height
        };

        return getClientRect(offset);
    }

    /**
     * Check if the given element is fixed or is inside a fixed parent
     * @method
     * @memberof Popper.Utils
     * @argument {Element} element
     * @argument {Element} customContainer
     * @returns {Boolean} answer to "isFixed?"
     */
    function isFixed (element) {
        var nodeName = element.nodeName;
        if (nodeName === 'BODY' || nodeName === 'HTML') {
            return false;
        }
        if (getStyleComputedProperty(element, 'position') === 'fixed') {
            return true;
        }
        var parentNode = getParentNode(element);
        if (!parentNode) {
            return false;
        }
        return isFixed(parentNode);
    }

    /**
     * Finds the first parent of an element that has a transformed property defined
     * @method
     * @memberof Popper.Utils
     * @argument {Element} element
     * @returns {Element} first transformed parent or documentElement
     */

    function getFixedPositionOffsetParent (element) {
        // This check is needed to avoid errors in case one of the elements isn't defined for any reason
        if (!element || !element.parentElement || isIE()) {
            return document.documentElement;
        }
        var el = element.parentElement;
        while (el && getStyleComputedProperty(el, 'transform') === 'none') {
            el = el.parentElement;
        }
        return el || document.documentElement;
    }

    /**
     * Computed the boundaries limits and return them
     * @method
     * @memberof Popper.Utils
     * @param {HTMLElement} popper
     * @param {HTMLElement} reference
     * @param {number} padding
     * @param {HTMLElement} boundariesElement - Element used to define the boundaries
     * @param {Boolean} fixedPosition - Is in fixed position mode
     * @returns {Object} Coordinates of the boundaries
     */
    function getBoundaries (popper, reference, padding, boundariesElement) {
        var fixedPosition = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : false;

        // NOTE: 1 DOM access here

        var boundaries = {top: 0, left: 0};
        var offsetParent = fixedPosition ? getFixedPositionOffsetParent(popper) : findCommonOffsetParent(popper, getReferenceNode(reference));

        // Handle viewport case
        if (boundariesElement === 'viewport') {
            boundaries = getViewportOffsetRectRelativeToArtbitraryNode(offsetParent, fixedPosition);
        } else {
            // Handle other cases based on DOM element used as boundaries
            var boundariesNode = void 0;
            if (boundariesElement === 'scrollParent') {
                boundariesNode = getScrollParent(getParentNode(reference));
                if (boundariesNode.nodeName === 'BODY') {
                    boundariesNode = popper.ownerDocument.documentElement;
                }
            } else if (boundariesElement === 'window') {
                boundariesNode = popper.ownerDocument.documentElement;
            } else {
                boundariesNode = boundariesElement;
            }

            var offsets = getOffsetRectRelativeToArbitraryNode(boundariesNode, offsetParent, fixedPosition);

            // In case of HTML, we need a different computation
            if (boundariesNode.nodeName === 'HTML' && !isFixed(offsetParent)) {
                var _getWindowSizes = getWindowSizes(popper.ownerDocument),
                    height = _getWindowSizes.height,
                    width = _getWindowSizes.width;

                boundaries.top += offsets.top - offsets.marginTop;
                boundaries.bottom = height + offsets.top;
                boundaries.left += offsets.left - offsets.marginLeft;
                boundaries.right = width + offsets.left;
            } else {
                // for all the other DOM elements, this one is good
                boundaries = offsets;
            }
        }

        // Add paddings
        padding = padding || 0;
        var isPaddingNumber = typeof padding === 'number';
        boundaries.left += isPaddingNumber ? padding : padding.left || 0;
        boundaries.top += isPaddingNumber ? padding : padding.top || 0;
        boundaries.right -= isPaddingNumber ? padding : padding.right || 0;
        boundaries.bottom -= isPaddingNumber ? padding : padding.bottom || 0;

        return boundaries;
    }

    function getArea (_ref) {
        var width = _ref.width,
            height = _ref.height;

        return width * height;
    }

    /**
     * Utility used to transform the `auto` placement to the placement with more
     * available space.
     * @method
     * @memberof Popper.Utils
     * @argument {Object} data - The data object generated by update method
     * @argument {Object} options - Modifiers configuration and options
     * @returns {Object} The data object, properly modified
     */
    function computeAutoPlacement (placement, refRect, popper, reference, boundariesElement) {
        var padding = arguments.length > 5 && arguments[5] !== undefined ? arguments[5] : 0;

        if (placement.indexOf('auto') === -1) {
            return placement;
        }

        var boundaries = getBoundaries(popper, reference, padding, boundariesElement);

        var rects = {
            top: {
                width: boundaries.width,
                height: refRect.top - boundaries.top
            },
            right: {
                width: boundaries.right - refRect.right,
                height: boundaries.height
            },
            bottom: {
                width: boundaries.width,
                height: boundaries.bottom - refRect.bottom
            },
            left: {
                width: refRect.left - boundaries.left,
                height: boundaries.height
            }
        };

        var sortedAreas = Object.keys(rects).map(function (key) {
            return _extends({
                key: key
            }, rects[key], {
                area: getArea(rects[key])
            });
        }).sort(function (a, b) {
            return b.area - a.area;
        });

        var filteredAreas = sortedAreas.filter(function (_ref2) {
            var width = _ref2.width,
                height = _ref2.height;
            return width >= popper.clientWidth && height >= popper.clientHeight;
        });

        var computedPlacement = filteredAreas.length > 0 ? filteredAreas[0].key : sortedAreas[0].key;

        var variation = placement.split('-')[1];

        return computedPlacement + (variation ? '-' + variation : '');
    }

    /**
     * Get offsets to the reference element
     * @method
     * @memberof Popper.Utils
     * @param {Object} state
     * @param {Element} popper - the popper element
     * @param {Element} reference - the reference element (the popper will be relative to this)
     * @param {Element} fixedPosition - is in fixed position mode
     * @returns {Object} An object containing the offsets which will be applied to the popper
     */
    function getReferenceOffsets (state, popper, reference) {
        var fixedPosition = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : null;

        var commonOffsetParent = fixedPosition ? getFixedPositionOffsetParent(popper) : findCommonOffsetParent(popper, getReferenceNode(reference));
        return getOffsetRectRelativeToArbitraryNode(reference, commonOffsetParent, fixedPosition);
    }

    /**
     * Get the outer sizes of the given element (offset size + margins)
     * @method
     * @memberof Popper.Utils
     * @argument {Element} element
     * @returns {Object} object containing width and height properties
     */
    function getOuterSizes (element) {
        var window = element.ownerDocument.defaultView;
        var styles = window.getComputedStyle(element);
        var x = parseFloat(styles.marginTop || 0) + parseFloat(styles.marginBottom || 0);
        var y = parseFloat(styles.marginLeft || 0) + parseFloat(styles.marginRight || 0);
        var result = {
            width: element.offsetWidth + y,
            height: element.offsetHeight + x
        };
        return result;
    }

    /**
     * Get the opposite placement of the given one
     * @method
     * @memberof Popper.Utils
     * @argument {String} placement
     * @returns {String} flipped placement
     */
    function getOppositePlacement (placement) {
        var hash = {left: 'right', right: 'left', bottom: 'top', top: 'bottom'};
        return placement.replace(/left|right|bottom|top/g, function (matched) {
            return hash[matched];
        });
    }

    /**
     * Get offsets to the popper
     * @method
     * @memberof Popper.Utils
     * @param {Object} position - CSS position the Popper will get applied
     * @param {HTMLElement} popper - the popper element
     * @param {Object} referenceOffsets - the reference offsets (the popper will be relative to this)
     * @param {String} placement - one of the valid placement options
     * @returns {Object} popperOffsets - An object containing the offsets which will be applied to the popper
     */
    function getPopperOffsets (popper, referenceOffsets, placement) {
        placement = placement.split('-')[0];

        // Get popper node sizes
        var popperRect = getOuterSizes(popper);

        // Add position, width and height to our offsets object
        var popperOffsets = {
            width: popperRect.width,
            height: popperRect.height
        };

        // depending by the popper placement we have to compute its offsets slightly differently
        var isHoriz = ['right', 'left'].indexOf(placement) !== -1;
        var mainSide = isHoriz ? 'top' : 'left';
        var secondarySide = isHoriz ? 'left' : 'top';
        var measurement = isHoriz ? 'height' : 'width';
        var secondaryMeasurement = !isHoriz ? 'height' : 'width';

        popperOffsets[mainSide] = referenceOffsets[mainSide] + referenceOffsets[measurement] / 2 - popperRect[measurement] / 2;
        if (placement === secondarySide) {
            popperOffsets[secondarySide] = referenceOffsets[secondarySide] - popperRect[secondaryMeasurement];
        } else {
            popperOffsets[secondarySide] = referenceOffsets[getOppositePlacement(secondarySide)];
        }

        return popperOffsets;
    }

    /**
     * Mimics the `find` method of Array
     * @method
     * @memberof Popper.Utils
     * @argument {Array} arr
     * @argument prop
     * @argument value
     * @returns index or -1
     */
    function find (arr, check) {
        // use native find if supported
        if (Array.prototype.find) {
            return arr.find(check);
        }

        // use `filter` to obtain the same behavior of `find`
        return arr.filter(check)[0];
    }

    /**
     * Return the index of the matching object
     * @method
     * @memberof Popper.Utils
     * @argument {Array} arr
     * @argument prop
     * @argument value
     * @returns index or -1
     */
    function findIndex (arr, prop, value) {
        // use native findIndex if supported
        if (Array.prototype.findIndex) {
            return arr.findIndex(function (cur) {
                return cur[prop] === value;
            });
        }

        // use `find` + `indexOf` if `findIndex` isn't supported
        var match = find(arr, function (obj) {
            return obj[prop] === value;
        });
        return arr.indexOf(match);
    }

    /**
     * Loop trough the list of modifiers and run them in order,
     * each of them will then edit the data object.
     * @method
     * @memberof Popper.Utils
     * @param {dataObject} data
     * @param {Array} modifiers
     * @param {String} ends - Optional modifier name used as stopper
     * @returns {dataObject}
     */
    function runModifiers (modifiers, data, ends) {
        var modifiersToRun = ends === undefined ? modifiers : modifiers.slice(0, findIndex(modifiers, 'name', ends));

        modifiersToRun.forEach(function (modifier) {
            if (modifier['function']) {
                // eslint-disable-line dot-notation
                console.warn('`modifier.function` is deprecated, use `modifier.fn`!');
            }
            var fn = modifier['function'] || modifier.fn; // eslint-disable-line dot-notation
            if (modifier.enabled && isFunction(fn)) {
                // Add properties to offsets to make them a complete clientRect object
                // we do this before each modifier to make sure the previous one doesn't
                // mess with these values
                data.offsets.popper = getClientRect(data.offsets.popper);
                data.offsets.reference = getClientRect(data.offsets.reference);

                data = fn(data, modifier);
            }
        });

        return data;
    }

    /**
     * Updates the position of the popper, computing the new offsets and applying
     * the new style.<br />
     * Prefer `scheduleUpdate` over `update` because of performance reasons.
     * @method
     * @memberof Popper
     */
    function update () {
        // if popper is destroyed, don't perform any further update
        if (this.state.isDestroyed) {
            return;
        }

        var data = {
            instance: this,
            styles: {},
            arrowStyles: {},
            attributes: {},
            flipped: false,
            offsets: {}
        };

        // compute reference element offsets
        data.offsets.reference = getReferenceOffsets(this.state, this.popper, this.reference, this.options.positionFixed);

        // compute auto placement, store placement inside the data object,
        // modifiers will be able to edit `placement` if needed
        // and refer to originalPlacement to know the original value
        data.placement = computeAutoPlacement(this.options.placement, data.offsets.reference, this.popper, this.reference, this.options.modifiers.flip.boundariesElement, this.options.modifiers.flip.padding);

        // store the computed placement inside `originalPlacement`
        data.originalPlacement = data.placement;

        data.positionFixed = this.options.positionFixed;

        // compute the popper offsets
        data.offsets.popper = getPopperOffsets(this.popper, data.offsets.reference, data.placement);

        data.offsets.popper.position = this.options.positionFixed ? 'fixed' : 'absolute';

        // run the modifiers
        data = runModifiers(this.modifiers, data);

        // the first `update` will call `onCreate` callback
        // the other ones will call `onUpdate` callback
        if (!this.state.isCreated) {
            this.state.isCreated = true;
            this.options.onCreate(data);
        } else {
            this.options.onUpdate(data);
        }
    }

    /**
     * Helper used to know if the given modifier is enabled.
     * @method
     * @memberof Popper.Utils
     * @returns {Boolean}
     */
    function isModifierEnabled (modifiers, modifierName) {
        return modifiers.some(function (_ref) {
            var name = _ref.name,
                enabled = _ref.enabled;
            return enabled && name === modifierName;
        });
    }

    /**
     * Get the prefixed supported property name
     * @method
     * @memberof Popper.Utils
     * @argument {String} property (camelCase)
     * @returns {String} prefixed property (camelCase or PascalCase, depending on the vendor prefix)
     */
    function getSupportedPropertyName (property) {
        var prefixes = [false, 'ms', 'Webkit', 'Moz', 'O'];
        var upperProp = property.charAt(0).toUpperCase() + property.slice(1);

        for (var i = 0; i < prefixes.length; i++) {
            var prefix = prefixes[i];
            var toCheck = prefix ? '' + prefix + upperProp : property;
            if (typeof document.body.style[toCheck] !== 'undefined') {
                return toCheck;
            }
        }
        return null;
    }

    /**
     * Destroys the popper.
     * @method
     * @memberof Popper
     */
    function destroy () {
        this.state.isDestroyed = true;

        // touch DOM only if `applyStyle` modifier is enabled
        if (isModifierEnabled(this.modifiers, 'applyStyle')) {
            this.popper.removeAttribute('x-placement');
            this.popper.style.position = '';
            this.popper.style.top = '';
            this.popper.style.left = '';
            this.popper.style.right = '';
            this.popper.style.bottom = '';
            this.popper.style.willChange = '';
            this.popper.style[getSupportedPropertyName('transform')] = '';
        }

        this.disableEventListeners();

        // remove the popper if user explicitly asked for the deletion on destroy
        // do not use `remove` because IE11 doesn't support it
        if (this.options.removeOnDestroy) {
            this.popper.parentNode.removeChild(this.popper);
        }
        return this;
    }

    /**
     * Get the window associated with the element
     * @argument {Element} element
     * @returns {Window}
     */
    function getWindow (element) {
        var ownerDocument = element.ownerDocument;
        return ownerDocument ? ownerDocument.defaultView : window;
    }

    function attachToScrollParents (scrollParent, event, callback, scrollParents) {
        var isBody = scrollParent.nodeName === 'BODY';
        var target = isBody ? scrollParent.ownerDocument.defaultView : scrollParent;
        target.addEventListener(event, callback, {passive: true});

        if (!isBody) {
            attachToScrollParents(getScrollParent(target.parentNode), event, callback, scrollParents);
        }
        scrollParents.push(target);
    }

    /**
     * Setup needed event listeners used to update the popper position
     * @method
     * @memberof Popper.Utils
     * @private
     */
    function setupEventListeners (reference, options, state, updateBound) {
        // Resize event listener on window
        state.updateBound = updateBound;
        getWindow(reference).addEventListener('resize', state.updateBound, {passive: true});

        // Scroll event listener on scroll parents
        var scrollElement = getScrollParent(reference);
        attachToScrollParents(scrollElement, 'scroll', state.updateBound, state.scrollParents);
        state.scrollElement = scrollElement;
        state.eventsEnabled = true;

        return state;
    }

    /**
     * It will add resize/scroll events and start recalculating
     * position of the popper element when they are triggered.
     * @method
     * @memberof Popper
     */
    function enableEventListeners () {
        if (!this.state.eventsEnabled) {
            this.state = setupEventListeners(this.reference, this.options, this.state, this.scheduleUpdate);
        }
    }

    /**
     * Remove event listeners used to update the popper position
     * @method
     * @memberof Popper.Utils
     * @private
     */
    function removeEventListeners (reference, state) {
        // Remove resize event listener on window
        getWindow(reference).removeEventListener('resize', state.updateBound);

        // Remove scroll event listener on scroll parents
        state.scrollParents.forEach(function (target) {
            target.removeEventListener('scroll', state.updateBound);
        });

        // Reset state
        state.updateBound = null;
        state.scrollParents = [];
        state.scrollElement = null;
        state.eventsEnabled = false;
        return state;
    }

    /**
     * It will remove resize/scroll events and won't recalculate popper position
     * when they are triggered. It also won't trigger `onUpdate` callback anymore,
     * unless you call `update` method manually.
     * @method
     * @memberof Popper
     */
    function disableEventListeners () {
        if (this.state.eventsEnabled) {
            cancelAnimationFrame(this.scheduleUpdate);
            this.state = removeEventListeners(this.reference, this.state);
        }
    }

    /**
     * Tells if a given input is a number
     * @method
     * @memberof Popper.Utils
     * @param {*} input to check
     * @return {Boolean}
     */
    function isNumeric (n) {
        return n !== '' && !isNaN(parseFloat(n)) && isFinite(n);
    }

    /**
     * Set the style to the given popper
     * @method
     * @memberof Popper.Utils
     * @argument {Element} element - Element to apply the style to
     * @argument {Object} styles
     * Object with a list of properties and values which will be applied to the element
     */
    function setStyles (element, styles) {
        Object.keys(styles).forEach(function (prop) {
            var unit = '';
            // add unit if the value is numeric and is one of the following
            if (['width', 'height', 'top', 'right', 'bottom', 'left'].indexOf(prop) !== -1 && isNumeric(styles[prop])) {
                unit = 'px';
            }
            element.style[prop] = styles[prop] + unit;
        });
    }

    /**
     * Set the attributes to the given popper
     * @method
     * @memberof Popper.Utils
     * @argument {Element} element - Element to apply the attributes to
     * @argument {Object} styles
     * Object with a list of properties and values which will be applied to the element
     */
    function setAttributes (element, attributes) {
        Object.keys(attributes).forEach(function (prop) {
            var value = attributes[prop];
            if (value !== false) {
                element.setAttribute(prop, attributes[prop]);
            } else {
                element.removeAttribute(prop);
            }
        });
    }

    /**
     * @function
     * @memberof Modifiers
     * @argument {Object} data - The data object generated by `update` method
     * @argument {Object} data.styles - List of style properties - values to apply to popper element
     * @argument {Object} data.attributes - List of attribute properties - values to apply to popper element
     * @argument {Object} options - Modifiers configuration and options
     * @returns {Object} The same data object
     */
    function applyStyle (data) {
        // any property present in `data.styles` will be applied to the popper,
        // in this way we can make the 3rd party modifiers add custom styles to it
        // Be aware, modifiers could override the properties defined in the previous
        // lines of this modifier!
        setStyles(data.instance.popper, data.styles);

        // any property present in `data.attributes` will be applied to the popper,
        // they will be set as HTML attributes of the element
        setAttributes(data.instance.popper, data.attributes);

        // if arrowElement is defined and arrowStyles has some properties
        if (data.arrowElement && Object.keys(data.arrowStyles).length) {
            setStyles(data.arrowElement, data.arrowStyles);
        }

        return data;
    }

    /**
     * Set the x-placement attribute before everything else because it could be used
     * to add margins to the popper margins needs to be calculated to get the
     * correct popper offsets.
     * @method
     * @memberof Popper.modifiers
     * @param {HTMLElement} reference - The reference element used to position the popper
     * @param {HTMLElement} popper - The HTML element used as popper
     * @param {Object} options - Popper.js options
     */
    function applyStyleOnLoad (reference, popper, options, modifierOptions, state) {
        // compute reference element offsets
        var referenceOffsets = getReferenceOffsets(state, popper, reference, options.positionFixed);

        // compute auto placement, store placement inside the data object,
        // modifiers will be able to edit `placement` if needed
        // and refer to originalPlacement to know the original value
        var placement = computeAutoPlacement(options.placement, referenceOffsets, popper, reference, options.modifiers.flip.boundariesElement, options.modifiers.flip.padding);

        popper.setAttribute('x-placement', placement);

        // Apply `position` to popper before anything else because
        // without the position applied we can't guarantee correct computations
        setStyles(popper, {position: options.positionFixed ? 'fixed' : 'absolute'});

        return options;
    }

    /**
     * @function
     * @memberof Popper.Utils
     * @argument {Object} data - The data object generated by `update` method
     * @argument {Boolean} shouldRound - If the offsets should be rounded at all
     * @returns {Object} The popper's position offsets rounded
     *
     * The tale of pixel-perfect positioning. It's still not 100% perfect, but as
     * good as it can be within reason.
     * Discussion here: https://github.com/FezVrasta/popper.js/pull/715
     *
     * Low DPI screens cause a popper to be blurry if not using full pixels (Safari
     * as well on High DPI screens).
     *
     * Firefox prefers no rounding for positioning and does not have blurriness on
     * high DPI screens.
     *
     * Only horizontal placement and left/right values need to be considered.
     */
    function getRoundedOffsets (data, shouldRound) {
        var _data$offsets = data.offsets,
            popper = _data$offsets.popper,
            reference = _data$offsets.reference;
        var round = Math.round,
            floor = Math.floor;

        var noRound = function noRound (v) {
            return v;
        };

        var referenceWidth = round(reference.width);
        var popperWidth = round(popper.width);

        var isVertical = ['left', 'right'].indexOf(data.placement) !== -1;
        var isVariation = data.placement.indexOf('-') !== -1;
        var sameWidthParity = referenceWidth % 2 === popperWidth % 2;
        var bothOddWidth = referenceWidth % 2 === 1 && popperWidth % 2 === 1;

        var horizontalToInteger = !shouldRound ? noRound : isVertical || isVariation || sameWidthParity ? round : floor;
        var verticalToInteger = !shouldRound ? noRound : round;

        return {
            left: horizontalToInteger(bothOddWidth && !isVariation && shouldRound ? popper.left - 1 : popper.left),
            top: verticalToInteger(popper.top),
            bottom: verticalToInteger(popper.bottom),
            right: horizontalToInteger(popper.right)
        };
    }

    var isFirefox = isBrowser && /Firefox/i.test(navigator.userAgent);

    /**
     * @function
     * @memberof Modifiers
     * @argument {Object} data - The data object generated by `update` method
     * @argument {Object} options - Modifiers configuration and options
     * @returns {Object} The data object, properly modified
     */
    function computeStyle (data, options) {
        var x = options.x,
            y = options.y;
        var popper = data.offsets.popper;

        // Remove this legacy support in Popper.js v2

        var legacyGpuAccelerationOption = find(data.instance.modifiers, function (modifier) {
            return modifier.name === 'applyStyle';
        }).gpuAcceleration;
        if (legacyGpuAccelerationOption !== undefined) {
            console.warn('WARNING: `gpuAcceleration` option moved to `computeStyle` modifier and will not be supported in future versions of Popper.js!');
        }
        var gpuAcceleration = legacyGpuAccelerationOption !== undefined ? legacyGpuAccelerationOption : options.gpuAcceleration;

        var offsetParent = getOffsetParent(data.instance.popper);
        var offsetParentRect = getBoundingClientRect(offsetParent);

        // Styles
        var styles = {
            position: popper.position
        };

        var offsets = getRoundedOffsets(data, window.devicePixelRatio < 2 || !isFirefox);

        var sideA = x === 'bottom' ? 'top' : 'bottom';
        var sideB = y === 'right' ? 'left' : 'right';

        // if gpuAcceleration is set to `true` and transform is supported,
        //  we use `translate3d` to apply the position to the popper we
        // automatically use the supported prefixed version if needed
        var prefixedProperty = getSupportedPropertyName('transform');

        // now, let's make a step back and look at this code closely (wtf?)
        // If the content of the popper grows once it's been positioned, it
        // may happen that the popper gets misplaced because of the new content
        // overflowing its reference element
        // To avoid this problem, we provide two options (x and y), which allow
        // the consumer to define the offset origin.
        // If we position a popper on top of a reference element, we can set
        // `x` to `top` to make the popper grow towards its top instead of
        // its bottom.
        var left = void 0,
            top = void 0;
        if (sideA === 'bottom') {
            // when offsetParent is <html> the positioning is relative to the bottom of the screen (excluding the scrollbar)
            // and not the bottom of the html element
            if (offsetParent.nodeName === 'HTML') {
                top = -offsetParent.clientHeight + offsets.bottom;
            } else {
                top = -offsetParentRect.height + offsets.bottom;
            }
        } else {
            top = offsets.top;
        }
        if (sideB === 'right') {
            if (offsetParent.nodeName === 'HTML') {
                left = -offsetParent.clientWidth + offsets.right;
            } else {
                left = -offsetParentRect.width + offsets.right;
            }
        } else {
            left = offsets.left;
        }
        if (gpuAcceleration && prefixedProperty) {
            styles[prefixedProperty] = 'translate3d(' + left + 'px, ' + top + 'px, 0)';
            styles[sideA] = 0;
            styles[sideB] = 0;
            styles.willChange = 'transform';
        } else {
            // othwerise, we use the standard `top`, `left`, `bottom` and `right` properties
            var invertTop = sideA === 'bottom' ? -1 : 1;
            var invertLeft = sideB === 'right' ? -1 : 1;
            styles[sideA] = top * invertTop;
            styles[sideB] = left * invertLeft;
            styles.willChange = sideA + ', ' + sideB;
        }

        // Attributes
        var attributes = {
            'x-placement': data.placement
        };

        // Update `data` attributes, styles and arrowStyles
        data.attributes = _extends({}, attributes, data.attributes);
        data.styles = _extends({}, styles, data.styles);
        data.arrowStyles = _extends({}, data.offsets.arrow, data.arrowStyles);

        return data;
    }

    /**
     * Helper used to know if the given modifier depends from another one.<br />
     * It checks if the needed modifier is listed and enabled.
     * @method
     * @memberof Popper.Utils
     * @param {Array} modifiers - list of modifiers
     * @param {String} requestingName - name of requesting modifier
     * @param {String} requestedName - name of requested modifier
     * @returns {Boolean}
     */
    function isModifierRequired (modifiers, requestingName, requestedName) {
        var requesting = find(modifiers, function (_ref) {
            var name = _ref.name;
            return name === requestingName;
        });

        var isRequired = !!requesting && modifiers.some(function (modifier) {
            return modifier.name === requestedName && modifier.enabled && modifier.order < requesting.order;
        });

        if (!isRequired) {
            var _requesting = '`' + requestingName + '`';
            var requested = '`' + requestedName + '`';
            console.warn(requested + ' modifier is required by ' + _requesting + ' modifier in order to work, be sure to include it before ' + _requesting + '!');
        }
        return isRequired;
    }

    /**
     * @function
     * @memberof Modifiers
     * @argument {Object} data - The data object generated by update method
     * @argument {Object} options - Modifiers configuration and options
     * @returns {Object} The data object, properly modified
     */
    function arrow (data, options) {
        var _data$offsets$arrow;

        // arrow depends on keepTogether in order to work
        if (!isModifierRequired(data.instance.modifiers, 'arrow', 'keepTogether')) {
            return data;
        }

        var arrowElement = options.element;

        // if arrowElement is a string, suppose it's a CSS selector
        if (typeof arrowElement === 'string') {
            arrowElement = data.instance.popper.querySelector(arrowElement);

            // if arrowElement is not found, don't run the modifier
            if (!arrowElement) {
                return data;
            }
        } else {
            // if the arrowElement isn't a query selector we must check that the
            // provided DOM node is child of its popper node
            if (!data.instance.popper.contains(arrowElement)) {
                console.warn('WARNING: `arrow.element` must be child of its popper element!');
                return data;
            }
        }

        var placement = data.placement.split('-')[0];
        var _data$offsets = data.offsets,
            popper = _data$offsets.popper,
            reference = _data$offsets.reference;

        var isVertical = ['left', 'right'].indexOf(placement) !== -1;

        var len = isVertical ? 'height' : 'width';
        var sideCapitalized = isVertical ? 'Top' : 'Left';
        var side = sideCapitalized.toLowerCase();
        var altSide = isVertical ? 'left' : 'top';
        var opSide = isVertical ? 'bottom' : 'right';
        var arrowElementSize = getOuterSizes(arrowElement)[len];

        //
        // extends keepTogether behavior making sure the popper and its
        // reference have enough pixels in conjunction
        //

        // top/left side
        if (reference[opSide] - arrowElementSize < popper[side]) {
            data.offsets.popper[side] -= popper[side] - (reference[opSide] - arrowElementSize);
        }
        // bottom/right side
        if (reference[side] + arrowElementSize > popper[opSide]) {
            data.offsets.popper[side] += reference[side] + arrowElementSize - popper[opSide];
        }
        data.offsets.popper = getClientRect(data.offsets.popper);

        // compute center of the popper
        var center = reference[side] + reference[len] / 2 - arrowElementSize / 2;

        // Compute the sideValue using the updated popper offsets
        // take popper margin in account because we don't have this info available
        var css = getStyleComputedProperty(data.instance.popper);
        var popperMarginSide = parseFloat(css['margin' + sideCapitalized], 10);
        var popperBorderSide = parseFloat(css['border' + sideCapitalized + 'Width'], 10);
        var sideValue = center - data.offsets.popper[side] - popperMarginSide - popperBorderSide;

        // prevent arrowElement from being placed not contiguously to its popper
        sideValue = Math.max(Math.min(popper[len] - arrowElementSize, sideValue), 0);

        data.arrowElement = arrowElement;
        data.offsets.arrow = (_data$offsets$arrow = {}, defineProperty(_data$offsets$arrow, side, Math.round(sideValue)), defineProperty(_data$offsets$arrow, altSide, ''), _data$offsets$arrow);

        return data;
    }

    /**
     * Get the opposite placement variation of the given one
     * @method
     * @memberof Popper.Utils
     * @argument {String} placement variation
     * @returns {String} flipped placement variation
     */
    function getOppositeVariation (variation) {
        if (variation === 'end') {
            return 'start';
        } else if (variation === 'start') {
            return 'end';
        }
        return variation;
    }

    /**
     * List of accepted placements to use as values of the `placement` option.<br />
     * Valid placements are:
     * - `auto`
     * - `top`
     * - `right`
     * - `bottom`
     * - `left`
     *
     * Each placement can have a variation from this list:
     * - `-start`
     * - `-end`
     *
     * Variations are interpreted easily if you think of them as the left to right
     * written languages. Horizontally (`top` and `bottom`), `start` is left and `end`
     * is right.<br />
     * Vertically (`left` and `right`), `start` is top and `end` is bottom.
     *
     * Some valid examples are:
     * - `top-end` (on top of reference, right aligned)
     * - `right-start` (on right of reference, top aligned)
     * - `bottom` (on bottom, centered)
     * - `auto-end` (on the side with more space available, alignment depends by placement)
     *
     * @static
     * @type {Array}
     * @enum {String}
     * @readonly
     * @method placements
     * @memberof Popper
     */
    var placements = ['auto-start', 'auto', 'auto-end', 'top-start', 'top', 'top-end', 'right-start', 'right', 'right-end', 'bottom-end', 'bottom', 'bottom-start', 'left-end', 'left', 'left-start'];

    // Get rid of `auto` `auto-start` and `auto-end`
    var validPlacements = placements.slice(3);

    /**
     * Given an initial placement, returns all the subsequent placements
     * clockwise (or counter-clockwise).
     *
     * @method
     * @memberof Popper.Utils
     * @argument {String} placement - A valid placement (it accepts variations)
     * @argument {Boolean} counter - Set to true to walk the placements counterclockwise
     * @returns {Array} placements including their variations
     */
    function clockwise (placement) {
        var counter = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;

        var index = validPlacements.indexOf(placement);
        var arr = validPlacements.slice(index + 1).concat(validPlacements.slice(0, index));
        return counter ? arr.reverse() : arr;
    }

    var BEHAVIORS = {
        FLIP: 'flip',
        CLOCKWISE: 'clockwise',
        COUNTERCLOCKWISE: 'counterclockwise'
    };

    /**
     * @function
     * @memberof Modifiers
     * @argument {Object} data - The data object generated by update method
     * @argument {Object} options - Modifiers configuration and options
     * @returns {Object} The data object, properly modified
     */
    function flip (data, options) {
        // if `inner` modifier is enabled, we can't use the `flip` modifier
        if (isModifierEnabled(data.instance.modifiers, 'inner')) {
            return data;
        }

        if (data.flipped && data.placement === data.originalPlacement) {
            // seems like flip is trying to loop, probably there's not enough space on any of the flippable sides
            return data;
        }

        var boundaries = getBoundaries(data.instance.popper, data.instance.reference, options.padding, options.boundariesElement, data.positionFixed);

        var placement = data.placement.split('-')[0];
        var placementOpposite = getOppositePlacement(placement);
        var variation = data.placement.split('-')[1] || '';

        var flipOrder = [];

        switch (options.behavior) {
            case BEHAVIORS.FLIP:
                flipOrder = [placement, placementOpposite];
                break;
            case BEHAVIORS.CLOCKWISE:
                flipOrder = clockwise(placement);
                break;
            case BEHAVIORS.COUNTERCLOCKWISE:
                flipOrder = clockwise(placement, true);
                break;
            default:
                flipOrder = options.behavior;
        }

        flipOrder.forEach(function (step, index) {
            if (placement !== step || flipOrder.length === index + 1) {
                return data;
            }

            placement = data.placement.split('-')[0];
            placementOpposite = getOppositePlacement(placement);

            var popperOffsets = data.offsets.popper;
            var refOffsets = data.offsets.reference;

            // using floor because the reference offsets may contain decimals we are not going to consider here
            var floor = Math.floor;
            var overlapsRef = placement === 'left' && floor(popperOffsets.right) > floor(refOffsets.left) || placement === 'right' && floor(popperOffsets.left) < floor(refOffsets.right) || placement === 'top' && floor(popperOffsets.bottom) > floor(refOffsets.top) || placement === 'bottom' && floor(popperOffsets.top) < floor(refOffsets.bottom);

            var overflowsLeft = floor(popperOffsets.left) < floor(boundaries.left);
            var overflowsRight = floor(popperOffsets.right) > floor(boundaries.right);
            var overflowsTop = floor(popperOffsets.top) < floor(boundaries.top);
            var overflowsBottom = floor(popperOffsets.bottom) > floor(boundaries.bottom);

            var overflowsBoundaries = placement === 'left' && overflowsLeft || placement === 'right' && overflowsRight || placement === 'top' && overflowsTop || placement === 'bottom' && overflowsBottom;

            // flip the variation if required
            var isVertical = ['top', 'bottom'].indexOf(placement) !== -1;

            // flips variation if reference element overflows boundaries
            var flippedVariationByRef = !!options.flipVariations && (isVertical && variation === 'start' && overflowsLeft || isVertical && variation === 'end' && overflowsRight || !isVertical && variation === 'start' && overflowsTop || !isVertical && variation === 'end' && overflowsBottom);

            // flips variation if popper content overflows boundaries
            var flippedVariationByContent = !!options.flipVariationsByContent && (isVertical && variation === 'start' && overflowsRight || isVertical && variation === 'end' && overflowsLeft || !isVertical && variation === 'start' && overflowsBottom || !isVertical && variation === 'end' && overflowsTop);

            var flippedVariation = flippedVariationByRef || flippedVariationByContent;

            if (overlapsRef || overflowsBoundaries || flippedVariation) {
                // this boolean to detect any flip loop
                data.flipped = true;

                if (overlapsRef || overflowsBoundaries) {
                    placement = flipOrder[index + 1];
                }

                if (flippedVariation) {
                    variation = getOppositeVariation(variation);
                }

                data.placement = placement + (variation ? '-' + variation : '');

                // this object contains `position`, we want to preserve it along with
                // any additional property we may add in the future
                data.offsets.popper = _extends({}, data.offsets.popper, getPopperOffsets(data.instance.popper, data.offsets.reference, data.placement));

                data = runModifiers(data.instance.modifiers, data, 'flip');
            }
        });
        return data;
    }

    /**
     * @function
     * @memberof Modifiers
     * @argument {Object} data - The data object generated by update method
     * @argument {Object} options - Modifiers configuration and options
     * @returns {Object} The data object, properly modified
     */
    function keepTogether (data) {
        var _data$offsets = data.offsets,
            popper = _data$offsets.popper,
            reference = _data$offsets.reference;

        var placement = data.placement.split('-')[0];
        var floor = Math.floor;
        var isVertical = ['top', 'bottom'].indexOf(placement) !== -1;
        var side = isVertical ? 'right' : 'bottom';
        var opSide = isVertical ? 'left' : 'top';
        var measurement = isVertical ? 'width' : 'height';

        if (popper[side] < floor(reference[opSide])) {
            data.offsets.popper[opSide] = floor(reference[opSide]) - popper[measurement];
        }
        if (popper[opSide] > floor(reference[side])) {
            data.offsets.popper[opSide] = floor(reference[side]);
        }

        return data;
    }

    /**
     * Converts a string containing value + unit into a px value number
     * @function
     * @memberof {modifiers~offset}
     * @private
     * @argument {String} str - Value + unit string
     * @argument {String} measurement - `height` or `width`
     * @argument {Object} popperOffsets
     * @argument {Object} referenceOffsets
     * @returns {Number|String}
     * Value in pixels, or original string if no values were extracted
     */
    function toValue (str, measurement, popperOffsets, referenceOffsets) {
        // separate value from unit
        var split = str.match(/((?:\-|\+)?\d*\.?\d*)(.*)/);
        var value = +split[1];
        var unit = split[2];

        // If it's not a number it's an operator, I guess
        if (!value) {
            return str;
        }

        if (unit.indexOf('%') === 0) {
            var element = void 0;
            switch (unit) {
                case '%p':
                    element = popperOffsets;
                    break;
                case '%':
                case '%r':
                default:
                    element = referenceOffsets;
            }

            var rect = getClientRect(element);
            return rect[measurement] / 100 * value;
        } else if (unit === 'vh' || unit === 'vw') {
            // if is a vh or vw, we calculate the size based on the viewport
            var size = void 0;
            if (unit === 'vh') {
                size = Math.max(document.documentElement.clientHeight, window.innerHeight || 0);
            } else {
                size = Math.max(document.documentElement.clientWidth, window.innerWidth || 0);
            }
            return size / 100 * value;
        } else {
            // if is an explicit pixel unit, we get rid of the unit and keep the value
            // if is an implicit unit, it's px, and we return just the value
            return value;
        }
    }

    /**
     * Parse an `offset` string to extrapolate `x` and `y` numeric offsets.
     * @function
     * @memberof {modifiers~offset}
     * @private
     * @argument {String} offset
     * @argument {Object} popperOffsets
     * @argument {Object} referenceOffsets
     * @argument {String} basePlacement
     * @returns {Array} a two cells array with x and y offsets in numbers
     */
    function parseOffset (offset, popperOffsets, referenceOffsets, basePlacement) {
        var offsets = [0, 0];

        // Use height if placement is left or right and index is 0 otherwise use width
        // in this way the first offset will use an axis and the second one
        // will use the other one
        var useHeight = ['right', 'left'].indexOf(basePlacement) !== -1;

        // Split the offset string to obtain a list of values and operands
        // The regex addresses values with the plus or minus sign in front (+10, -20, etc)
        var fragments = offset.split(/(\+|\-)/).map(function (frag) {
            return frag.trim();
        });

        // Detect if the offset string contains a pair of values or a single one
        // they could be separated by comma or space
        var divider = fragments.indexOf(find(fragments, function (frag) {
            return frag.search(/,|\s/) !== -1;
        }));

        if (fragments[divider] && fragments[divider].indexOf(',') === -1) {
            console.warn('Offsets separated by white space(s) are deprecated, use a comma (,) instead.');
        }

        // If divider is found, we divide the list of values and operands to divide
        // them by ofset X and Y.
        var splitRegex = /\s*,\s*|\s+/;
        var ops = divider !== -1 ? [fragments.slice(0, divider).concat([fragments[divider].split(splitRegex)[0]]), [fragments[divider].split(splitRegex)[1]].concat(fragments.slice(divider + 1))] : [fragments];

        // Convert the values with units to absolute pixels to allow our computations
        ops = ops.map(function (op, index) {
            // Most of the units rely on the orientation of the popper
            var measurement = (index === 1 ? !useHeight : useHeight) ? 'height' : 'width';
            var mergeWithPrevious = false;
            return op
                // This aggregates any `+` or `-` sign that aren't considered operators
                // e.g.: 10 + +5 => [10, +, +5]
                .reduce(function (a, b) {
                    if (a[a.length - 1] === '' && ['+', '-'].indexOf(b) !== -1) {
                        a[a.length - 1] = b;
                        mergeWithPrevious = true;
                        return a;
                    } else if (mergeWithPrevious) {
                        a[a.length - 1] += b;
                        mergeWithPrevious = false;
                        return a;
                    } else {
                        return a.concat(b);
                    }
                }, [])
                // Here we convert the string values into number values (in px)
                .map(function (str) {
                    return toValue(str, measurement, popperOffsets, referenceOffsets);
                });
        });

        // Loop trough the offsets arrays and execute the operations
        ops.forEach(function (op, index) {
            op.forEach(function (frag, index2) {
                if (isNumeric(frag)) {
                    offsets[index] += frag * (op[index2 - 1] === '-' ? -1 : 1);
                }
            });
        });
        return offsets;
    }

    /**
     * @function
     * @memberof Modifiers
     * @argument {Object} data - The data object generated by update method
     * @argument {Object} options - Modifiers configuration and options
     * @argument {Number|String} options.offset=0
     * The offset value as described in the modifier description
     * @returns {Object} The data object, properly modified
     */
    function offset (data, _ref) {
        var offset = _ref.offset;
        var placement = data.placement,
            _data$offsets = data.offsets,
            popper = _data$offsets.popper,
            reference = _data$offsets.reference;

        var basePlacement = placement.split('-')[0];

        var offsets = void 0;
        if (isNumeric(+offset)) {
            offsets = [+offset, 0];
        } else {
            offsets = parseOffset(offset, popper, reference, basePlacement);
        }

        if (basePlacement === 'left') {
            popper.top += offsets[0];
            popper.left -= offsets[1];
        } else if (basePlacement === 'right') {
            popper.top += offsets[0];
            popper.left += offsets[1];
        } else if (basePlacement === 'top') {
            popper.left += offsets[0];
            popper.top -= offsets[1];
        } else if (basePlacement === 'bottom') {
            popper.left += offsets[0];
            popper.top += offsets[1];
        }

        data.popper = popper;
        return data;
    }

    /**
     * @function
     * @memberof Modifiers
     * @argument {Object} data - The data object generated by `update` method
     * @argument {Object} options - Modifiers configuration and options
     * @returns {Object} The data object, properly modified
     */
    function preventOverflow (data, options) {
        var boundariesElement = options.boundariesElement || getOffsetParent(data.instance.popper);

        // If offsetParent is the reference element, we really want to
        // go one step up and use the next offsetParent as reference to
        // avoid to make this modifier completely useless and look like broken
        if (data.instance.reference === boundariesElement) {
            boundariesElement = getOffsetParent(boundariesElement);
        }

        // NOTE: DOM access here
        // resets the popper's position so that the document size can be calculated excluding
        // the size of the popper element itself
        var transformProp = getSupportedPropertyName('transform');
        var popperStyles = data.instance.popper.style; // assignment to help minification
        var top = popperStyles.top,
            left = popperStyles.left,
            transform = popperStyles[transformProp];

        popperStyles.top = '';
        popperStyles.left = '';
        popperStyles[transformProp] = '';

        var boundaries = getBoundaries(data.instance.popper, data.instance.reference, options.padding, boundariesElement, data.positionFixed);

        // NOTE: DOM access here
        // restores the original style properties after the offsets have been computed
        popperStyles.top = top;
        popperStyles.left = left;
        popperStyles[transformProp] = transform;

        options.boundaries = boundaries;

        var order = options.priority;
        var popper = data.offsets.popper;

        var check = {
            primary: function primary (placement) {
                var value = popper[placement];
                if (popper[placement] < boundaries[placement] && !options.escapeWithReference) {
                    value = Math.max(popper[placement], boundaries[placement]);
                }
                return defineProperty({}, placement, value);
            },
            secondary: function secondary (placement) {
                var mainSide = placement === 'right' ? 'left' : 'top';
                var value = popper[mainSide];
                if (popper[placement] > boundaries[placement] && !options.escapeWithReference) {
                    value = Math.min(popper[mainSide], boundaries[placement] - (placement === 'right' ? popper.width : popper.height));
                }
                return defineProperty({}, mainSide, value);
            }
        };

        order.forEach(function (placement) {
            var side = ['left', 'top'].indexOf(placement) !== -1 ? 'primary' : 'secondary';
            popper = _extends({}, popper, check[side](placement));
        });

        data.offsets.popper = popper;

        return data;
    }

    /**
     * @function
     * @memberof Modifiers
     * @argument {Object} data - The data object generated by `update` method
     * @argument {Object} options - Modifiers configuration and options
     * @returns {Object} The data object, properly modified
     */
    function shift (data) {
        var placement = data.placement;
        var basePlacement = placement.split('-')[0];
        var shiftvariation = placement.split('-')[1];

        // if shift shiftvariation is specified, run the modifier
        if (shiftvariation) {
            var _data$offsets = data.offsets,
                reference = _data$offsets.reference,
                popper = _data$offsets.popper;

            var isVertical = ['bottom', 'top'].indexOf(basePlacement) !== -1;
            var side = isVertical ? 'left' : 'top';
            var measurement = isVertical ? 'width' : 'height';

            var shiftOffsets = {
                start: defineProperty({}, side, reference[side]),
                end: defineProperty({}, side, reference[side] + reference[measurement] - popper[measurement])
            };

            data.offsets.popper = _extends({}, popper, shiftOffsets[shiftvariation]);
        }

        return data;
    }

    /**
     * @function
     * @memberof Modifiers
     * @argument {Object} data - The data object generated by update method
     * @argument {Object} options - Modifiers configuration and options
     * @returns {Object} The data object, properly modified
     */
    function hide (data) {
        if (!isModifierRequired(data.instance.modifiers, 'hide', 'preventOverflow')) {
            return data;
        }

        var refRect = data.offsets.reference;
        var bound = find(data.instance.modifiers, function (modifier) {
            return modifier.name === 'preventOverflow';
        }).boundaries;

        if (refRect.bottom < bound.top || refRect.left > bound.right || refRect.top > bound.bottom || refRect.right < bound.left) {
            // Avoid unnecessary DOM access if visibility hasn't changed
            if (data.hide === true) {
                return data;
            }

            data.hide = true;
            data.attributes['x-out-of-boundaries'] = '';
        } else {
            // Avoid unnecessary DOM access if visibility hasn't changed
            if (data.hide === false) {
                return data;
            }

            data.hide = false;
            data.attributes['x-out-of-boundaries'] = false;
        }

        return data;
    }

    /**
     * @function
     * @memberof Modifiers
     * @argument {Object} data - The data object generated by `update` method
     * @argument {Object} options - Modifiers configuration and options
     * @returns {Object} The data object, properly modified
     */
    function inner (data) {
        var placement = data.placement;
        var basePlacement = placement.split('-')[0];
        var _data$offsets = data.offsets,
            popper = _data$offsets.popper,
            reference = _data$offsets.reference;

        var isHoriz = ['left', 'right'].indexOf(basePlacement) !== -1;

        var subtractLength = ['top', 'left'].indexOf(basePlacement) === -1;

        popper[isHoriz ? 'left' : 'top'] = reference[basePlacement] - (subtractLength ? popper[isHoriz ? 'width' : 'height'] : 0);

        data.placement = getOppositePlacement(placement);
        data.offsets.popper = getClientRect(popper);

        return data;
    }

    /**
     * Modifier function, each modifier can have a function of this type assigned
     * to its `fn` property.<br />
     * These functions will be called on each update, this means that you must
     * make sure they are performant enough to avoid performance bottlenecks.
     *
     * @function ModifierFn
     * @argument {dataObject} data - The data object generated by `update` method
     * @argument {Object} options - Modifiers configuration and options
     * @returns {dataObject} The data object, properly modified
     */

    /**
     * Modifiers are plugins used to alter the behavior of your poppers.<br />
     * Popper.js uses a set of 9 modifiers to provide all the basic functionalities
     * needed by the library.
     *
     * Usually you don't want to override the `order`, `fn` and `onLoad` props.
     * All the other properties are configurations that could be tweaked.
     * @namespace modifiers
     */
    var modifiers = {
        /**
         * Modifier used to shift the popper on the start or end of its reference
         * element.<br />
         * It will read the variation of the `placement` property.<br />
         * It can be one either `-end` or `-start`.
         * @memberof modifiers
         * @inner
         */
        shift: {
            /** @prop {number} order=100 - Index used to define the order of execution */
            order: 100,
            /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
            enabled: true,
            /** @prop {ModifierFn} */
            fn: shift
        },

        /**
         * The `offset` modifier can shift your popper on both its axis.
         *
         * It accepts the following units:
         * - `px` or unit-less, interpreted as pixels
         * - `%` or `%r`, percentage relative to the length of the reference element
         * - `%p`, percentage relative to the length of the popper element
         * - `vw`, CSS viewport width unit
         * - `vh`, CSS viewport height unit
         *
         * For length is intended the main axis relative to the placement of the popper.<br />
         * This means that if the placement is `top` or `bottom`, the length will be the
         * `width`. In case of `left` or `right`, it will be the `height`.
         *
         * You can provide a single value (as `Number` or `String`), or a pair of values
         * as `String` divided by a comma or one (or more) white spaces.<br />
         * The latter is a deprecated method because it leads to confusion and will be
         * removed in v2.<br />
         * Additionally, it accepts additions and subtractions between different units.
         * Note that multiplications and divisions aren't supported.
         *
         * Valid examples are:
         * ```
         * 10
         * '10%'
         * '10, 10'
         * '10%, 10'
         * '10 + 10%'
         * '10 - 5vh + 3%'
         * '-10px + 5vh, 5px - 6%'
         * ```
         * > **NB**: If you desire to apply offsets to your poppers in a way that may make them overlap
         * > with their reference element, unfortunately, you will have to disable the `flip` modifier.
         * > You can read more on this at this [issue](https://github.com/FezVrasta/popper.js/issues/373).
         *
         * @memberof modifiers
         * @inner
         */
        offset: {
            /** @prop {number} order=200 - Index used to define the order of execution */
            order: 200,
            /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
            enabled: true,
            /** @prop {ModifierFn} */
            fn: offset,
            /** @prop {Number|String} offset=0
             * The offset value as described in the modifier description
             */
            offset: 0
        },

        /**
         * Modifier used to prevent the popper from being positioned outside the boundary.
         *
         * A scenario exists where the reference itself is not within the boundaries.<br />
         * We can say it has "escaped the boundaries" — or just "escaped".<br />
         * In this case we need to decide whether the popper should either:
         *
         * - detach from the reference and remain "trapped" in the boundaries, or
         * - if it should ignore the boundary and "escape with its reference"
         *
         * When `escapeWithReference` is set to`true` and reference is completely
         * outside its boundaries, the popper will overflow (or completely leave)
         * the boundaries in order to remain attached to the edge of the reference.
         *
         * @memberof modifiers
         * @inner
         */
        preventOverflow: {
            /** @prop {number} order=300 - Index used to define the order of execution */
            order: 300,
            /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
            enabled: true,
            /** @prop {ModifierFn} */
            fn: preventOverflow,
            /**
             * @prop {Array} [priority=['left','right','top','bottom']]
             * Popper will try to prevent overflow following these priorities by default,
             * then, it could overflow on the left and on top of the `boundariesElement`
             */
            priority: ['left', 'right', 'top', 'bottom'],
            /**
             * @prop {number} padding=5
             * Amount of pixel used to define a minimum distance between the boundaries
             * and the popper. This makes sure the popper always has a little padding
             * between the edges of its container
             */
            padding: 5,
            /**
             * @prop {String|HTMLElement} boundariesElement='scrollParent'
             * Boundaries used by the modifier. Can be `scrollParent`, `window`,
             * `viewport` or any DOM element.
             */
            boundariesElement: 'scrollParent'
        },

        /**
         * Modifier used to make sure the reference and its popper stay near each other
         * without leaving any gap between the two. Especially useful when the arrow is
         * enabled and you want to ensure that it points to its reference element.
         * It cares only about the first axis. You can still have poppers with margin
         * between the popper and its reference element.
         * @memberof modifiers
         * @inner
         */
        keepTogether: {
            /** @prop {number} order=400 - Index used to define the order of execution */
            order: 400,
            /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
            enabled: true,
            /** @prop {ModifierFn} */
            fn: keepTogether
        },

        /**
         * This modifier is used to move the `arrowElement` of the popper to make
         * sure it is positioned between the reference element and its popper element.
         * It will read the outer size of the `arrowElement` node to detect how many
         * pixels of conjunction are needed.
         *
         * It has no effect if no `arrowElement` is provided.
         * @memberof modifiers
         * @inner
         */
        arrow: {
            /** @prop {number} order=500 - Index used to define the order of execution */
            order: 500,
            /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
            enabled: true,
            /** @prop {ModifierFn} */
            fn: arrow,
            /** @prop {String|HTMLElement} element='[x-arrow]' - Selector or node used as arrow */
            element: '[x-arrow]'
        },

        /**
         * Modifier used to flip the popper's placement when it starts to overlap its
         * reference element.
         *
         * Requires the `preventOverflow` modifier before it in order to work.
         *
         * **NOTE:** this modifier will interrupt the current update cycle and will
         * restart it if it detects the need to flip the placement.
         * @memberof modifiers
         * @inner
         */
        flip: {
            /** @prop {number} order=600 - Index used to define the order of execution */
            order: 600,
            /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
            enabled: true,
            /** @prop {ModifierFn} */
            fn: flip,
            /**
             * @prop {String|Array} behavior='flip'
             * The behavior used to change the popper's placement. It can be one of
             * `flip`, `clockwise`, `counterclockwise` or an array with a list of valid
             * placements (with optional variations)
             */
            behavior: 'flip',
            /**
             * @prop {number} padding=5
             * The popper will flip if it hits the edges of the `boundariesElement`
             */
            padding: 5,
            /**
             * @prop {String|HTMLElement} boundariesElement='viewport'
             * The element which will define the boundaries of the popper position.
             * The popper will never be placed outside of the defined boundaries
             * (except if `keepTogether` is enabled)
             */
            boundariesElement: 'viewport',
            /**
             * @prop {Boolean} flipVariations=false
             * The popper will switch placement variation between `-start` and `-end` when
             * the reference element overlaps its boundaries.
             *
             * The original placement should have a set variation.
             */
            flipVariations: false,
            /**
             * @prop {Boolean} flipVariationsByContent=false
             * The popper will switch placement variation between `-start` and `-end` when
             * the popper element overlaps its reference boundaries.
             *
             * The original placement should have a set variation.
             */
            flipVariationsByContent: false
        },

        /**
         * Modifier used to make the popper flow toward the inner of the reference element.
         * By default, when this modifier is disabled, the popper will be placed outside
         * the reference element.
         * @memberof modifiers
         * @inner
         */
        inner: {
            /** @prop {number} order=700 - Index used to define the order of execution */
            order: 700,
            /** @prop {Boolean} enabled=false - Whether the modifier is enabled or not */
            enabled: false,
            /** @prop {ModifierFn} */
            fn: inner
        },

        /**
         * Modifier used to hide the popper when its reference element is outside of the
         * popper boundaries. It will set a `x-out-of-boundaries` attribute which can
         * be used to hide with a CSS selector the popper when its reference is
         * out of boundaries.
         *
         * Requires the `preventOverflow` modifier before it in order to work.
         * @memberof modifiers
         * @inner
         */
        hide: {
            /** @prop {number} order=800 - Index used to define the order of execution */
            order: 800,
            /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
            enabled: true,
            /** @prop {ModifierFn} */
            fn: hide
        },

        /**
         * Computes the style that will be applied to the popper element to gets
         * properly positioned.
         *
         * Note that this modifier will not touch the DOM, it just prepares the styles
         * so that `applyStyle` modifier can apply it. This separation is useful
         * in case you need to replace `applyStyle` with a custom implementation.
         *
         * This modifier has `850` as `order` value to maintain backward compatibility
         * with previous versions of Popper.js. Expect the modifiers ordering method
         * to change in future major versions of the library.
         *
         * @memberof modifiers
         * @inner
         */
        computeStyle: {
            /** @prop {number} order=850 - Index used to define the order of execution */
            order: 850,
            /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
            enabled: true,
            /** @prop {ModifierFn} */
            fn: computeStyle,
            /**
             * @prop {Boolean} gpuAcceleration=true
             * If true, it uses the CSS 3D transformation to position the popper.
             * Otherwise, it will use the `top` and `left` properties
             */
            gpuAcceleration: true,
            /**
             * @prop {string} [x='bottom']
             * Where to anchor the X axis (`bottom` or `top`). AKA X offset origin.
             * Change this if your popper should grow in a direction different from `bottom`
             */
            x: 'bottom',
            /**
             * @prop {string} [x='left']
             * Where to anchor the Y axis (`left` or `right`). AKA Y offset origin.
             * Change this if your popper should grow in a direction different from `right`
             */
            y: 'right'
        },

        /**
         * Applies the computed styles to the popper element.
         *
         * All the DOM manipulations are limited to this modifier. This is useful in case
         * you want to integrate Popper.js inside a framework or view library and you
         * want to delegate all the DOM manipulations to it.
         *
         * Note that if you disable this modifier, you must make sure the popper element
         * has its position set to `absolute` before Popper.js can do its work!
         *
         * Just disable this modifier and define your own to achieve the desired effect.
         *
         * @memberof modifiers
         * @inner
         */
        applyStyle: {
            /** @prop {number} order=900 - Index used to define the order of execution */
            order: 900,
            /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
            enabled: true,
            /** @prop {ModifierFn} */
            fn: applyStyle,
            /** @prop {Function} */
            onLoad: applyStyleOnLoad,
            /**
             * @deprecated since version 1.10.0, the property moved to `computeStyle` modifier
             * @prop {Boolean} gpuAcceleration=true
             * If true, it uses the CSS 3D transformation to position the popper.
             * Otherwise, it will use the `top` and `left` properties
             */
            gpuAcceleration: undefined
        }
    };

    /**
     * The `dataObject` is an object containing all the information used by Popper.js.
     * This object is passed to modifiers and to the `onCreate` and `onUpdate` callbacks.
     * @name dataObject
     * @property {Object} data.instance The Popper.js instance
     * @property {String} data.placement Placement applied to popper
     * @property {String} data.originalPlacement Placement originally defined on init
     * @property {Boolean} data.flipped True if popper has been flipped by flip modifier
     * @property {Boolean} data.hide True if the reference element is out of boundaries, useful to know when to hide the popper
     * @property {HTMLElement} data.arrowElement Node used as arrow by arrow modifier
     * @property {Object} data.styles Any CSS property defined here will be applied to the popper. It expects the JavaScript nomenclature (eg. `marginBottom`)
     * @property {Object} data.arrowStyles Any CSS property defined here will be applied to the popper arrow. It expects the JavaScript nomenclature (eg. `marginBottom`)
     * @property {Object} data.boundaries Offsets of the popper boundaries
     * @property {Object} data.offsets The measurements of popper, reference and arrow elements
     * @property {Object} data.offsets.popper `top`, `left`, `width`, `height` values
     * @property {Object} data.offsets.reference `top`, `left`, `width`, `height` values
     * @property {Object} data.offsets.arrow] `top` and `left` offsets, only one of them will be different from 0
     */

    /**
     * Default options provided to Popper.js constructor.<br />
     * These can be overridden using the `options` argument of Popper.js.<br />
     * To override an option, simply pass an object with the same
     * structure of the `options` object, as the 3rd argument. For example:
     * ```
     * new Popper(ref, pop, {
     *   modifiers: {
     *     preventOverflow: { enabled: false }
     *   }
     * })
     * ```
     * @type {Object}
     * @static
     * @memberof Popper
     */
    var Defaults = {
        /**
         * Popper's placement.
         * @prop {Popper.placements} placement='bottom'
         */
        placement: 'bottom',

        /**
         * Set this to true if you want popper to position it self in 'fixed' mode
         * @prop {Boolean} positionFixed=false
         */
        positionFixed: false,

        /**
         * Whether events (resize, scroll) are initially enabled.
         * @prop {Boolean} eventsEnabled=true
         */
        eventsEnabled: true,

        /**
         * Set to true if you want to automatically remove the popper when
         * you call the `destroy` method.
         * @prop {Boolean} removeOnDestroy=false
         */
        removeOnDestroy: false,

        /**
         * Callback called when the popper is created.<br />
         * By default, it is set to no-op.<br />
         * Access Popper.js instance with `data.instance`.
         * @prop {onCreate}
         */
        onCreate: function onCreate () {
        },

        /**
         * Callback called when the popper is updated. This callback is not called
         * on the initialization/creation of the popper, but only on subsequent
         * updates.<br />
         * By default, it is set to no-op.<br />
         * Access Popper.js instance with `data.instance`.
         * @prop {onUpdate}
         */
        onUpdate: function onUpdate () {
        },

        /**
         * List of modifiers used to modify the offsets before they are applied to the popper.
         * They provide most of the functionalities of Popper.js.
         * @prop {modifiers}
         */
        modifiers: modifiers
    };

    /**
     * @callback onCreate
     * @param {dataObject} data
     */

    /**
     * @callback onUpdate
     * @param {dataObject} data
     */

        // Utils
        // Methods
    var Popper = function () {
            /**
             * Creates a new Popper.js instance.
             * @class Popper
             * @param {Element|referenceObject} reference - The reference element used to position the popper
             * @param {Element} popper - The HTML / XML element used as the popper
             * @param {Object} options - Your custom options to override the ones defined in [Defaults](#defaults)
             * @return {Object} instance - The generated Popper.js instance
             */
            function Popper (reference, popper) {
                var _this = this;

                var options = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};
                classCallCheck(this, Popper);

                this.scheduleUpdate = function () {
                    return requestAnimationFrame(_this.update);
                };

                // make update() debounced, so that it only runs at most once-per-tick
                this.update = debounce(this.update.bind(this));

                // with {} we create a new object with the options inside it
                this.options = _extends({}, Popper.Defaults, options);

                // init state
                this.state = {
                    isDestroyed: false,
                    isCreated: false,
                    scrollParents: []
                };

                // get reference and popper elements (allow jQuery wrappers)
                this.reference = reference && reference.jquery ? reference[0] : reference;
                this.popper = popper && popper.jquery ? popper[0] : popper;

                // Deep merge modifiers options
                this.options.modifiers = {};
                Object.keys(_extends({}, Popper.Defaults.modifiers, options.modifiers)).forEach(function (name) {
                    _this.options.modifiers[name] = _extends({}, Popper.Defaults.modifiers[name] || {}, options.modifiers ? options.modifiers[name] : {});
                });

                // Refactoring modifiers' list (Object => Array)
                this.modifiers = Object.keys(this.options.modifiers).map(function (name) {
                    return _extends({
                        name: name
                    }, _this.options.modifiers[name]);
                })
                    // sort the modifiers by order
                    .sort(function (a, b) {
                        return a.order - b.order;
                    });

                // modifiers have the ability to execute arbitrary code when Popper.js get inited
                // such code is executed in the same order of its modifier
                // they could add new properties to their options configuration
                // BE AWARE: don't add options to `options.modifiers.name` but to `modifierOptions`!
                this.modifiers.forEach(function (modifierOptions) {
                    if (modifierOptions.enabled && isFunction(modifierOptions.onLoad)) {
                        modifierOptions.onLoad(_this.reference, _this.popper, _this.options, modifierOptions, _this.state);
                    }
                });

                // fire the first update to position the popper in the right place
                this.update();

                var eventsEnabled = this.options.eventsEnabled;
                if (eventsEnabled) {
                    // setup event listeners, they will take care of update the position in specific situations
                    this.enableEventListeners();
                }

                this.state.eventsEnabled = eventsEnabled;
            }

            // We can't use class properties because they don't get listed in the
            // class prototype and break stuff like Sinon stubs


            createClass(Popper, [{
                key: 'update',
                value: function update$$1 () {
                    return update.call(this);
                }
            }, {
                key: 'destroy',
                value: function destroy$$1 () {
                    return destroy.call(this);
                }
            }, {
                key: 'enableEventListeners',
                value: function enableEventListeners$$1 () {
                    return enableEventListeners.call(this);
                }
            }, {
                key: 'disableEventListeners',
                value: function disableEventListeners$$1 () {
                    return disableEventListeners.call(this);
                }

                /**
                 * Schedules an update. It will run on the next UI update available.
                 * @method scheduleUpdate
                 * @memberof Popper
                 */


                /**
                 * Collection of utilities useful when writing custom modifiers.
                 * Starting from version 1.7, this method is available only if you
                 * include `popper-utils.js` before `popper.js`.
                 *
                 * **DEPRECATION**: This way to access PopperUtils is deprecated
                 * and will be removed in v2! Use the PopperUtils module directly instead.
                 * Due to the high instability of the methods contained in Utils, we can't
                 * guarantee them to follow semver. Use them at your own risk!
                 * @static
                 * @private
                 * @type {Object}
                 * @deprecated since version 1.8
                 * @member Utils
                 * @memberof Popper
                 */

            }]);
            return Popper;
        }();

    /**
     * The `referenceObject` is an object that provides an interface compatible with Popper.js
     * and lets you use it as replacement of a real DOM node.<br />
     * You can use this method to position a popper relatively to a set of coordinates
     * in case you don't have a DOM node to use as reference.
     *
     * ```
     * new Popper(referenceObject, popperNode);
     * ```
     *
     * NB: This feature isn't supported in Internet Explorer 10.
     * @name referenceObject
     * @property {Function} data.getBoundingClientRect
     * A function that returns a set of coordinates compatible with the native `getBoundingClientRect` method.
     * @property {number} data.clientWidth
     * An ES6 getter that will return the width of the virtual reference element.
     * @property {number} data.clientHeight
     * An ES6 getter that will return the height of the virtual reference element.
     */


    Popper.Utils = (typeof window !== 'undefined' ? window : global).PopperUtils;
    Popper.placements = placements;
    Popper.Defaults = Defaults;

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

    var NAME$4 = 'dropdown';
    var VERSION$4 = '4.4.1';
    var DATA_KEY$4 = 'bs.dropdown';
    var EVENT_KEY$4 = "." + DATA_KEY$4;
    var DATA_API_KEY$4 = '.data-api';
    var JQUERY_NO_CONFLICT$4 = $.fn[NAME$4];
    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$4 = {
        HIDE: "hide" + EVENT_KEY$4,
        HIDDEN: "hidden" + EVENT_KEY$4,
        SHOW: "show" + EVENT_KEY$4,
        SHOWN: "shown" + EVENT_KEY$4,
        CLICK: "click" + EVENT_KEY$4,
        CLICK_DATA_API: "click" + EVENT_KEY$4 + DATA_API_KEY$4,
        KEYDOWN_DATA_API: "keydown" + EVENT_KEY$4 + DATA_API_KEY$4,
        KEYUP_DATA_API: "keyup" + EVENT_KEY$4 + DATA_API_KEY$4
    };
    var ClassName$4 = {
        DISABLED: 'disabled',
        SHOW: 'show',
        DROPUP: 'dropup',
        DROPRIGHT: 'dropright',
        DROPLEFT: 'dropleft',
        MENURIGHT: 'dropdown-menu-right',
        MENULEFT: 'dropdown-menu-left',
        POSITION_STATIC: 'position-static'
    };
    var Selector$4 = {
        DATA_TOGGLE: '[data-toggle="dropdown"]',
        FORM_CHILD: '.dropdown form',
        MENU: '.dropdown-menu',
        NAVBAR_NAV: '.navbar-nav',
        VISIBLE_ITEMS: '.dropdown-menu .dropdown-item:not(.disabled):not(:disabled)'
    };
    var AttachmentMap = {
        TOP: 'top-start',
        TOPEND: 'top-end',
        BOTTOM: 'bottom-start',
        BOTTOMEND: 'bottom-end',
        RIGHT: 'right-start',
        RIGHTEND: 'right-end',
        LEFT: 'left-start',
        LEFTEND: 'left-end'
    };
    var Default$2 = {
        offset: 0,
        flip: true,
        boundary: 'scrollParent',
        reference: 'toggle',
        display: 'dynamic',
        popperConfig: null
    };
    var DefaultType$2 = {
        offset: '(number|string|function)',
        flip: 'boolean',
        boundary: '(string|element)',
        reference: '(string|element)',
        display: 'string',
        popperConfig: '(null|object)'
    };
    /**
     * ------------------------------------------------------------------------
     * Class Definition
     * ------------------------------------------------------------------------
     */

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

                this._addEventListeners();
            } // Getters


            var _proto = Dropdown.prototype;

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

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

                Dropdown._clearMenus();

                if (isActive) {
                    return;
                }

                this.show(true);
            };

            _proto.show = function show (usePopper) {
                if (usePopper === void 0) {
                    usePopper = false;
                }

                if (this._element.disabled || $(this._element).hasClass(ClassName$4.DISABLED) || $(this._menu).hasClass(ClassName$4.SHOW)) {
                    return;
                }

                var relatedTarget = {
                    relatedTarget: this._element
                };
                var showEvent = $.Event(Event$4.SHOW, relatedTarget);

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

                $(parent).trigger(showEvent);

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


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

                    var referenceElement = this._element;

                    if (this._config.reference === 'parent') {
                        referenceElement = parent;
                    } else if (Util.isElement(this._config.reference)) {
                        referenceElement = this._config.reference; // Check if it's jQuery element

                        if (typeof this._config.reference.jquery !== 'undefined') {
                            referenceElement = this._config.reference[0];
                        }
                    } // If boundary is not `scrollParent`, then set position to `static`
                    // to allow the menu to "escape" the scroll parent's boundaries
                    // https://github.com/twbs/bootstrap/issues/24251


                    if (this._config.boundary !== 'scrollParent') {
                        $(parent).addClass(ClassName$4.POSITION_STATIC);
                    }

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


                if ('ontouchstart' in document.documentElement && $(parent).closest(Selector$4.NAVBAR_NAV).length === 0) {
                    $(document.body).children().on('mouseover', null, $.noop);
                }

                this._element.focus();

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

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

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

                var relatedTarget = {
                    relatedTarget: this._element
                };
                var hideEvent = $.Event(Event$4.HIDE, relatedTarget);

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

                $(parent).trigger(hideEvent);

                if (hideEvent.isDefaultPrevented()) {
                    return;
                }

                if (this._popper) {
                    this._popper.destroy();
                }

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

            _proto.dispose = function dispose () {
                $.removeData(this._element, DATA_KEY$4);
                $(this._element).off(EVENT_KEY$4);
                this._element = null;
                this._menu = null;

                if (this._popper !== null) {
                    this._popper.destroy();

                    this._popper = null;
                }
            };

            _proto.update = function update () {
                this._inNavbar = this._detectNavbar();

                if (this._popper !== null) {
                    this._popper.scheduleUpdate();
                }
            } // Private
            ;

            _proto._addEventListeners = function _addEventListeners () {
                var _this = this;

                $(this._element).on(Event$4.CLICK, function (event) {
                    event.preventDefault();
                    event.stopPropagation();

                    _this.toggle();
                });
            };

            _proto._getConfig = function _getConfig (config) {
                config = _objectSpread2({}, this.constructor.Default, {}, $(this._element).data(), {}, config);
                Util.typeCheckConfig(NAME$4, config, this.constructor.DefaultType);
                return config;
            };

            _proto._getMenuElement = function _getMenuElement () {
                if (!this._menu) {
                    var parent = Dropdown._getParentFromElement(this._element);

                    if (parent) {
                        this._menu = parent.querySelector(Selector$4.MENU);
                    }
                }

                return this._menu;
            };

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

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

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

                return placement;
            };

            _proto._detectNavbar = function _detectNavbar () {
                return $(this._element).closest('.navbar').length > 0;
            };

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

                var offset = {};

                if (typeof this._config.offset === 'function') {
                    offset.fn = function (data) {
                        data.offsets = _objectSpread2({}, data.offsets, {}, _this2._config.offset(data.offsets, _this2._element) || {});
                        return data;
                    };
                } else {
                    offset.offset = this._config.offset;
                }

                return offset;
            };

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

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

                return _objectSpread2({}, popperConfig, {}, this._config.popperConfig);
            } // Static
            ;

            Dropdown._jQueryInterface = function _jQueryInterface (config) {
                return this.each(function () {
                    var data = $(this).data(DATA_KEY$4);

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

                    if (!data) {
                        data = new Dropdown(this, _config);
                        $(this).data(DATA_KEY$4, data);
                    }

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

                        data[config]();
                    }
                });
            };

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

                var toggles = [].slice.call(document.querySelectorAll(Selector$4.DATA_TOGGLE));

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

                    var context = $(toggles[i]).data(DATA_KEY$4);
                    var relatedTarget = {
                        relatedTarget: toggles[i]
                    };

                    if (event && event.type === 'click') {
                        relatedTarget.clickEvent = event;
                    }

                    if (!context) {
                        continue;
                    }

                    var dropdownMenu = context._menu;

                    if (!$(parent).hasClass(ClassName$4.SHOW)) {
                        continue;
                    }

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

                    var hideEvent = $.Event(Event$4.HIDE, relatedTarget);
                    $(parent).trigger(hideEvent);

                    if (hideEvent.isDefaultPrevented()) {
                        continue;
                    } // If this is a touch-enabled device we remove the extra
                    // empty mouseover listeners we added for iOS support


                    if ('ontouchstart' in document.documentElement) {
                        $(document.body).children().off('mouseover', null, $.noop);
                    }

                    toggles[i].setAttribute('aria-expanded', 'false');

                    if (context._popper) {
                        context._popper.destroy();
                    }

                    $(dropdownMenu).removeClass(ClassName$4.SHOW);
                    $(parent).removeClass(ClassName$4.SHOW).trigger($.Event(Event$4.HIDDEN, relatedTarget));
                }
            };

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

                if (selector) {
                    parent = document.querySelector(selector);
                }

                return parent || element.parentNode;
            } // eslint-disable-next-line complexity
            ;

            Dropdown._dataApiKeydownHandler = function _dataApiKeydownHandler (event) {
                // If not input/textarea:
                //  - And not a key in REGEXP_KEYDOWN => not a dropdown command
                // If input/textarea:
                //  - If space key => not a dropdown command
                //  - If key is other than escape
                //    - If key is not up or down => not a dropdown command
                //    - If trigger inside the menu => not a dropdown command
                if (/input|textarea/i.test(event.target.tagName) ? event.which === SPACE_KEYCODE || event.which !== ESCAPE_KEYCODE && (event.which !== ARROW_DOWN_KEYCODE && event.which !== ARROW_UP_KEYCODE || $(event.target).closest(Selector$4.MENU).length) : !REGEXP_KEYDOWN.test(event.which)) {
                    return;
                }

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

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

                var parent = Dropdown._getParentFromElement(this);

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

                if (!isActive && event.which === ESCAPE_KEYCODE) {
                    return;
                }

                if (!isActive || isActive && (event.which === ESCAPE_KEYCODE || event.which === SPACE_KEYCODE)) {
                    if (event.which === ESCAPE_KEYCODE) {
                        var toggle = parent.querySelector(Selector$4.DATA_TOGGLE);
                        $(toggle).trigger('focus');
                    }

                    $(this).trigger('click');
                    return;
                }

                var items = [].slice.call(parent.querySelectorAll(Selector$4.VISIBLE_ITEMS)).filter(function (item) {
                    return $(item).is(':visible');
                });

                if (items.length === 0) {
                    return;
                }

                var index = items.indexOf(event.target);

                if (event.which === ARROW_UP_KEYCODE && index > 0) {
                    // Up
                    index--;
                }

                if (event.which === ARROW_DOWN_KEYCODE && index < items.length - 1) {
                    // Down
                    index++;
                }

                if (index < 0) {
                    index = 0;
                }

                items[index].focus();
            };

            _createClass(Dropdown, null, [{
                key: "VERSION",
                get: function get () {
                    return VERSION$4;
                }
            }, {
                key: "Default",
                get: function get () {
                    return Default$2;
                }
            }, {
                key: "DefaultType",
                get: function get () {
                    return DefaultType$2;
                }
            }]);

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


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

        Dropdown._jQueryInterface.call($(this), 'toggle');
    }).on(Event$4.CLICK_DATA_API, Selector$4.FORM_CHILD, function (e) {
        e.stopPropagation();
    });
    /**
     * ------------------------------------------------------------------------
     * jQuery
     * ------------------------------------------------------------------------
     */

    $.fn[NAME$4] = Dropdown._jQueryInterface;
    $.fn[NAME$4].Constructor = Dropdown;

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

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

    var NAME$5 = 'modal';
    var VERSION$5 = '4.4.1';
    var DATA_KEY$5 = 'bs.modal';
    var EVENT_KEY$5 = "." + DATA_KEY$5;
    var DATA_API_KEY$5 = '.data-api';
    var JQUERY_NO_CONFLICT$5 = $.fn[NAME$5];
    var ESCAPE_KEYCODE$1 = 27; // KeyboardEvent.which value for Escape (Esc) key

    var Default$3 = {
        backdrop: true,
        keyboard: true,
        focus: true,
        show: true
    };
    var DefaultType$3 = {
        backdrop: '(boolean|string)',
        keyboard: 'boolean',
        focus: 'boolean',
        show: 'boolean'
    };
    var Event$5 = {
        HIDE: "hide" + EVENT_KEY$5,
        HIDE_PREVENTED: "hidePrevented" + EVENT_KEY$5,
        HIDDEN: "hidden" + EVENT_KEY$5,
        SHOW: "show" + EVENT_KEY$5,
        SHOWN: "shown" + EVENT_KEY$5,
        FOCUSIN: "focusin" + EVENT_KEY$5,
        RESIZE: "resize" + EVENT_KEY$5,
        CLICK_DISMISS: "click.dismiss" + EVENT_KEY$5,
        KEYDOWN_DISMISS: "keydown.dismiss" + EVENT_KEY$5,
        MOUSEUP_DISMISS: "mouseup.dismiss" + EVENT_KEY$5,
        MOUSEDOWN_DISMISS: "mousedown.dismiss" + EVENT_KEY$5,
        CLICK_DATA_API: "click" + EVENT_KEY$5 + DATA_API_KEY$5
    };
    var ClassName$5 = {
        SCROLLABLE: 'modal-dialog-scrollable',
        SCROLLBAR_MEASURER: 'modal-scrollbar-measure',
        BACKDROP: 'modal-backdrop',
        OPEN: 'modal-open',
        FADE: 'fade',
        SHOW: 'show',
        STATIC: 'modal-static'
    };
    var Selector$5 = {
        DIALOG: '.modal-dialog',
        MODAL_BODY: '.modal-body',
        DATA_TOGGLE: '[data-toggle="modal"]',
        DATA_DISMISS: '[data-dismiss="modal"]',
        FIXED_CONTENT: '.fixed-top, .fixed-bottom, .is-fixed, .sticky-top',
        STICKY_CONTENT: '.sticky-top'
    };
    /**
     * ------------------------------------------------------------------------
     * Class Definition
     * ------------------------------------------------------------------------
     */

    var Modal =
        /*#__PURE__*/
        function () {
            function Modal (element, config) {
                this._config = this._getConfig(config);
                this._element = element;
                this._dialog = element.querySelector(Selector$5.DIALOG);
                this._backdrop = null;
                this._isShown = false;
                this._isBodyOverflowing = false;
                this._ignoreBackdropClick = false;
                this._isTransitioning = false;
                this._scrollbarWidth = 0;
            } // Getters


            var _proto = Modal.prototype;

            // Public
            _proto.toggle = function toggle (relatedTarget) {
                return this._isShown ? this.hide() : this.show(relatedTarget);
            };

            _proto.show = function show (relatedTarget) {
                var _this = this;

                if (this._isShown || this._isTransitioning) {
                    return;
                }

                if ($(this._element).hasClass(ClassName$5.FADE)) {
                    this._isTransitioning = true;
                }

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

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

                this._isShown = true;

                this._checkScrollbar();

                this._setScrollbar();

                this._adjustDialog();

                this._setEscapeEvent();

                this._setResizeEvent();

                $(this._element).on(Event$5.CLICK_DISMISS, Selector$5.DATA_DISMISS, function (event) {
                    return _this.hide(event);
                });
                $(this._dialog).on(Event$5.MOUSEDOWN_DISMISS, function () {
                    $(_this._element).one(Event$5.MOUSEUP_DISMISS, function (event) {
                        if ($(event.target).is(_this._element)) {
                            _this._ignoreBackdropClick = true;
                        }
                    });
                });

                this._showBackdrop(function () {
                    return _this._showElement(relatedTarget);
                });
            };

            _proto.hide = function hide (event) {
                var _this2 = this;

                if (event) {
                    event.preventDefault();
                }

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

                var hideEvent = $.Event(Event$5.HIDE);
                $(this._element).trigger(hideEvent);

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

                this._isShown = false;
                var transition = $(this._element).hasClass(ClassName$5.FADE);

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

                this._setEscapeEvent();

                this._setResizeEvent();

                $(document).off(Event$5.FOCUSIN);
                $(this._element).removeClass(ClassName$5.SHOW);
                $(this._element).off(Event$5.CLICK_DISMISS);
                $(this._dialog).off(Event$5.MOUSEDOWN_DISMISS);

                if (transition) {
                    var transitionDuration = Util.getTransitionDurationFromElement(this._element);
                    $(this._element).one(Util.TRANSITION_END, function (event) {
                        return _this2._hideModal(event);
                    }).emulateTransitionEnd(transitionDuration);
                } else {
                    this._hideModal();
                }
            };

            _proto.dispose = function dispose () {
                [window, this._element, this._dialog].forEach(function (htmlElement) {
                    return $(htmlElement).off(EVENT_KEY$5);
                });
                /**
                 * `document` has 2 events `Event.FOCUSIN` and `Event.CLICK_DATA_API`
                 * Do not move `document` in `htmlElements` array
                 * It will remove `Event.CLICK_DATA_API` event that should remain
                 */

                $(document).off(Event$5.FOCUSIN);
                $.removeData(this._element, DATA_KEY$5);
                this._config = null;
                this._element = null;
                this._dialog = null;
                this._backdrop = null;
                this._isShown = null;
                this._isBodyOverflowing = null;
                this._ignoreBackdropClick = null;
                this._isTransitioning = null;
                this._scrollbarWidth = null;
            };

            _proto.handleUpdate = function handleUpdate () {
                this._adjustDialog();
            } // Private
            ;

            _proto._getConfig = function _getConfig (config) {
                config = _objectSpread2({}, Default$3, {}, config);
                Util.typeCheckConfig(NAME$5, config, DefaultType$3);
                return config;
            };

            _proto._triggerBackdropTransition = function _triggerBackdropTransition () {
                var _this3 = this;

                if (this._config.backdrop === 'static') {
                    var hideEventPrevented = $.Event(Event$5.HIDE_PREVENTED);
                    $(this._element).trigger(hideEventPrevented);

                    if (hideEventPrevented.defaultPrevented) {
                        return;
                    }

                    this._element.classList.add(ClassName$5.STATIC);

                    var modalTransitionDuration = Util.getTransitionDurationFromElement(this._element);
                    $(this._element).one(Util.TRANSITION_END, function () {
                        _this3._element.classList.remove(ClassName$5.STATIC);
                    }).emulateTransitionEnd(modalTransitionDuration);

                    this._element.focus();
                } else {
                    this.hide();
                }
            };

            _proto._showElement = function _showElement (relatedTarget) {
                var _this4 = this;

                var transition = $(this._element).hasClass(ClassName$5.FADE);
                var modalBody = this._dialog ? this._dialog.querySelector(Selector$5.MODAL_BODY) : null;

                if (!this._element.parentNode || this._element.parentNode.nodeType !== Node.ELEMENT_NODE) {
                    // Don't move modal's DOM position
                    document.body.appendChild(this._element);
                }

                this._element.style.display = 'block';

                this._element.removeAttribute('aria-hidden');

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

                if ($(this._dialog).hasClass(ClassName$5.SCROLLABLE) && modalBody) {
                    modalBody.scrollTop = 0;
                } else {
                    this._element.scrollTop = 0;
                }

                if (transition) {
                    Util.reflow(this._element);
                }

                $(this._element).addClass(ClassName$5.SHOW);

                if (this._config.focus) {
                    this._enforceFocus();
                }

                var shownEvent = $.Event(Event$5.SHOWN, {
                    relatedTarget: relatedTarget
                });

                var transitionComplete = function transitionComplete () {
                    if (_this4._config.focus) {
                        _this4._element.focus();
                    }

                    _this4._isTransitioning = false;
                    $(_this4._element).trigger(shownEvent);
                };

                if (transition) {
                    var transitionDuration = Util.getTransitionDurationFromElement(this._dialog);
                    $(this._dialog).one(Util.TRANSITION_END, transitionComplete).emulateTransitionEnd(transitionDuration);
                } else {
                    transitionComplete();
                }
            };

            _proto._enforceFocus = function _enforceFocus () {
                var _this5 = this;

                $(document).off(Event$5.FOCUSIN) // Guard against infinite focus loop
                    .on(Event$5.FOCUSIN, function (event) {
                        if (document !== event.target && _this5._element !== event.target && $(_this5._element).has(event.target).length === 0) {
                            _this5._element.focus();
                        }
                    });
            };

            _proto._setEscapeEvent = function _setEscapeEvent () {
                var _this6 = this;

                if (this._isShown && this._config.keyboard) {
                    $(this._element).on(Event$5.KEYDOWN_DISMISS, function (event) {
                        if (event.which === ESCAPE_KEYCODE$1) {
                            _this6._triggerBackdropTransition();
                        }
                    });
                } else if (!this._isShown) {
                    $(this._element).off(Event$5.KEYDOWN_DISMISS);
                }
            };

            _proto._setResizeEvent = function _setResizeEvent () {
                var _this7 = this;

                if (this._isShown) {
                    $(window).on(Event$5.RESIZE, function (event) {
                        return _this7.handleUpdate(event);
                    });
                } else {
                    $(window).off(Event$5.RESIZE);
                }
            };

            _proto._hideModal = function _hideModal () {
                var _this8 = this;

                this._element.style.display = 'none';

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

                this._element.removeAttribute('aria-modal');

                this._isTransitioning = false;

                this._showBackdrop(function () {
                    $(document.body).removeClass(ClassName$5.OPEN);

                    _this8._resetAdjustments();

                    _this8._resetScrollbar();

                    $(_this8._element).trigger(Event$5.HIDDEN);
                });
            };

            _proto._removeBackdrop = function _removeBackdrop () {
                if (this._backdrop) {
                    $(this._backdrop).remove();
                    this._backdrop = null;
                }
            };

            _proto._showBackdrop = function _showBackdrop (callback) {
                var _this9 = this;

                var animate = $(this._element).hasClass(ClassName$5.FADE) ? ClassName$5.FADE : '';

                if (this._isShown && this._config.backdrop) {
                    this._backdrop = document.createElement('div');
                    this._backdrop.className = ClassName$5.BACKDROP;

                    if (animate) {
                        this._backdrop.classList.add(animate);
                    }

                    $(this._backdrop).appendTo(document.body);
                    $(this._element).on(Event$5.CLICK_DISMISS, function (event) {
                        if (_this9._ignoreBackdropClick) {
                            _this9._ignoreBackdropClick = false;
                            return;
                        }

                        if (event.target !== event.currentTarget) {
                            return;
                        }

                        _this9._triggerBackdropTransition();
                    });

                    if (animate) {
                        Util.reflow(this._backdrop);
                    }

                    $(this._backdrop).addClass(ClassName$5.SHOW);

                    if (!callback) {
                        return;
                    }

                    if (!animate) {
                        callback();
                        return;
                    }

                    var backdropTransitionDuration = Util.getTransitionDurationFromElement(this._backdrop);
                    $(this._backdrop).one(Util.TRANSITION_END, callback).emulateTransitionEnd(backdropTransitionDuration);
                } else if (!this._isShown && this._backdrop) {
                    $(this._backdrop).removeClass(ClassName$5.SHOW);

                    var callbackRemove = function callbackRemove () {
                        _this9._removeBackdrop();

                        if (callback) {
                            callback();
                        }
                    };

                    if ($(this._element).hasClass(ClassName$5.FADE)) {
                        var _backdropTransitionDuration = Util.getTransitionDurationFromElement(this._backdrop);

                        $(this._backdrop).one(Util.TRANSITION_END, callbackRemove).emulateTransitionEnd(_backdropTransitionDuration);
                    } else {
                        callbackRemove();
                    }
                } else if (callback) {
                    callback();
                }
            } // ----------------------------------------------------------------------
            // the following methods are used to handle overflowing modals
            // todo (fat): these should probably be refactored out of modal.js
            // ----------------------------------------------------------------------
            ;

            _proto._adjustDialog = function _adjustDialog () {
                var isModalOverflowing = this._element.scrollHeight > document.documentElement.clientHeight;

                if (!this._isBodyOverflowing && isModalOverflowing) {
                    this._element.style.paddingLeft = this._scrollbarWidth + "px";
                }

                if (this._isBodyOverflowing && !isModalOverflowing) {
                    this._element.style.paddingRight = this._scrollbarWidth + "px";
                }
            };

            _proto._resetAdjustments = function _resetAdjustments () {
                this._element.style.paddingLeft = '';
                this._element.style.paddingRight = '';
            };

            _proto._checkScrollbar = function _checkScrollbar () {
                var rect = document.body.getBoundingClientRect();
                this._isBodyOverflowing = rect.left + rect.right < window.innerWidth;
                this._scrollbarWidth = this._getScrollbarWidth();
            };

            _proto._setScrollbar = function _setScrollbar () {
                var _this10 = this;

                if (this._isBodyOverflowing) {
                    // Note: DOMNode.style.paddingRight returns the actual value or '' if not set
                    //   while $(DOMNode).css('padding-right') returns the calculated value or 0 if not set
                    var fixedContent = [].slice.call(document.querySelectorAll(Selector$5.FIXED_CONTENT));
                    var stickyContent = [].slice.call(document.querySelectorAll(Selector$5.STICKY_CONTENT)); // Adjust fixed content padding

                    $(fixedContent).each(function (index, element) {
                        var actualPadding = element.style.paddingRight;
                        var calculatedPadding = $(element).css('padding-right');
                        $(element).data('padding-right', actualPadding).css('padding-right', parseFloat(calculatedPadding) + _this10._scrollbarWidth + "px");
                    }); // Adjust sticky content margin

                    $(stickyContent).each(function (index, element) {
                        var actualMargin = element.style.marginRight;
                        var calculatedMargin = $(element).css('margin-right');
                        $(element).data('margin-right', actualMargin).css('margin-right', parseFloat(calculatedMargin) - _this10._scrollbarWidth + "px");
                    }); // Adjust body padding

                    var actualPadding = document.body.style.paddingRight;
                    var calculatedPadding = $(document.body).css('padding-right');
                    $(document.body).data('padding-right', actualPadding).css('padding-right', parseFloat(calculatedPadding) + this._scrollbarWidth + "px");
                }

                $(document.body).addClass(ClassName$5.OPEN);
            };

            _proto._resetScrollbar = function _resetScrollbar () {
                // Restore fixed content padding
                var fixedContent = [].slice.call(document.querySelectorAll(Selector$5.FIXED_CONTENT));
                $(fixedContent).each(function (index, element) {
                    var padding = $(element).data('padding-right');
                    $(element).removeData('padding-right');
                    element.style.paddingRight = padding ? padding : '';
                }); // Restore sticky content

                var elements = [].slice.call(document.querySelectorAll("" + Selector$5.STICKY_CONTENT));
                $(elements).each(function (index, element) {
                    var margin = $(element).data('margin-right');

                    if (typeof margin !== 'undefined') {
                        $(element).css('margin-right', margin).removeData('margin-right');
                    }
                }); // Restore body padding

                var padding = $(document.body).data('padding-right');
                $(document.body).removeData('padding-right');
                document.body.style.paddingRight = padding ? padding : '';
            };

            _proto._getScrollbarWidth = function _getScrollbarWidth () {
                // thx d.walsh
                var scrollDiv = document.createElement('div');
                scrollDiv.className = ClassName$5.SCROLLBAR_MEASURER;
                document.body.appendChild(scrollDiv);
                var scrollbarWidth = scrollDiv.getBoundingClientRect().width - scrollDiv.clientWidth;
                document.body.removeChild(scrollDiv);
                return scrollbarWidth;
            } // Static
            ;

            Modal._jQueryInterface = function _jQueryInterface (config, relatedTarget) {
                return this.each(function () {
                    var data = $(this).data(DATA_KEY$5);

                    var _config = _objectSpread2({}, Default$3, {}, $(this).data(), {}, typeof config === 'object' && config ? config : {});

                    if (!data) {
                        data = new Modal(this, _config);
                        $(this).data(DATA_KEY$5, data);
                    }

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

                        data[config](relatedTarget);
                    } else if (_config.show) {
                        data.show(relatedTarget);
                    }
                });
            };

            _createClass(Modal, null, [{
                key: "VERSION",
                get: function get () {
                    return VERSION$5;
                }
            }, {
                key: "Default",
                get: function get () {
                    return Default$3;
                }
            }]);

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


    $(document).on(Event$5.CLICK_DATA_API, Selector$5.DATA_TOGGLE, function (event) {
        var _this11 = this;

        var target;
        var selector = Util.getSelectorFromElement(this);

        if (selector) {
            target = document.querySelector(selector);
        }

        var config = $(target).data(DATA_KEY$5) ? 'toggle' : _objectSpread2({}, $(target).data(), {}, $(this).data());

        if (this.tagName === 'A' || this.tagName === 'AREA') {
            event.preventDefault();
        }

        var $target = $(target).one(Event$5.SHOW, function (showEvent) {
            if (showEvent.isDefaultPrevented()) {
                // Only register focus restorer if modal will actually get shown
                return;
            }

            $target.one(Event$5.HIDDEN, function () {
                if ($(_this11).is(':visible')) {
                    _this11.focus();
                }
            });
        });

        Modal._jQueryInterface.call($(target), config, this);
    });
    /**
     * ------------------------------------------------------------------------
     * jQuery
     * ------------------------------------------------------------------------
     */

    $.fn[NAME$5] = Modal._jQueryInterface;
    $.fn[NAME$5].Constructor = Modal;

    $.fn[NAME$5].noConflict = function () {
        $.fn[NAME$5] = JQUERY_NO_CONFLICT$5;
        return Modal._jQueryInterface;
    };

    /**
     * --------------------------------------------------------------------------
     * Bootstrap (v4.4.1): tools/sanitizer.js
     * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
     * --------------------------------------------------------------------------
     */
    var uriAttrs = ['background', 'cite', 'href', 'itemtype', 'longdesc', 'poster', 'src', 'xlink:href'];
    var ARIA_ATTRIBUTE_PATTERN = /^aria-[\w-]*$/i;
    var DefaultWhitelist = {
        // Global attributes allowed on any supplied element below.
        '*': ['class', 'dir', 'id', 'lang', 'role', ARIA_ATTRIBUTE_PATTERN],
        a: ['target', 'href', 'title', 'rel'],
        area: [],
        b: [],
        br: [],
        col: [],
        code: [],
        div: [],
        em: [],
        hr: [],
        h1: [],
        h2: [],
        h3: [],
        h4: [],
        h5: [],
        h6: [],
        i: [],
        img: ['src', 'alt', 'title', 'width', 'height'],
        li: [],
        ol: [],
        p: [],
        pre: [],
        s: [],
        small: [],
        span: [],
        sub: [],
        sup: [],
        strong: [],
        u: [],
        ul: []
    };
    /**
     * A pattern that recognizes a commonly useful subset of URLs that are safe.
     *
     * Shoutout to Angular 7 https://github.com/angular/angular/blob/7.2.4/packages/core/src/sanitization/url_sanitizer.ts
     */

    var SAFE_URL_PATTERN = /^(?:(?:https?|mailto|ftp|tel|file):|[^&:/?#]*(?:[/?#]|$))/gi;
    /**
     * A pattern that matches safe data URLs. Only matches image, video and audio types.
     *
     * Shoutout to Angular 7 https://github.com/angular/angular/blob/7.2.4/packages/core/src/sanitization/url_sanitizer.ts
     */

    var DATA_URL_PATTERN = /^data:(?:image\/(?:bmp|gif|jpeg|jpg|png|tiff|webp)|video\/(?:mpeg|mp4|ogg|webm)|audio\/(?:mp3|oga|ogg|opus));base64,[a-z0-9+/]+=*$/i;

    function allowedAttribute (attr, allowedAttributeList) {
        var attrName = attr.nodeName.toLowerCase();

        if (allowedAttributeList.indexOf(attrName) !== -1) {
            if (uriAttrs.indexOf(attrName) !== -1) {
                return Boolean(attr.nodeValue.match(SAFE_URL_PATTERN) || attr.nodeValue.match(DATA_URL_PATTERN));
            }

            return true;
        }

        var regExp = allowedAttributeList.filter(function (attrRegex) {
            return attrRegex instanceof RegExp;
        }); // Check if a regular expression validates the attribute.

        for (var i = 0, l = regExp.length; i < l; i++) {
            if (attrName.match(regExp[i])) {
                return true;
            }
        }

        return false;
    }

    function sanitizeHtml (unsafeHtml, whiteList, sanitizeFn) {
        if (unsafeHtml.length === 0) {
            return unsafeHtml;
        }

        if (sanitizeFn && typeof sanitizeFn === 'function') {
            return sanitizeFn(unsafeHtml);
        }

        var domParser = new window.DOMParser();
        var createdDocument = domParser.parseFromString(unsafeHtml, 'text/html');
        var whitelistKeys = Object.keys(whiteList);
        var elements = [].slice.call(createdDocument.body.querySelectorAll('*'));

        var _loop = function _loop (i, len) {
            var el = elements[i];
            var elName = el.nodeName.toLowerCase();

            if (whitelistKeys.indexOf(el.nodeName.toLowerCase()) === -1) {
                el.parentNode.removeChild(el);
                return "continue";
            }

            var attributeList = [].slice.call(el.attributes);
            var whitelistedAttributes = [].concat(whiteList['*'] || [], whiteList[elName] || []);
            attributeList.forEach(function (attr) {
                if (!allowedAttribute(attr, whitelistedAttributes)) {
                    el.removeAttribute(attr.nodeName);
                }
            });
        };

        for (var i = 0, len = elements.length; i < len; i++) {
            var _ret = _loop(i);

            if (_ret === "continue") continue;
        }

        return createdDocument.body.innerHTML;
    }

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

    var NAME$6 = 'tooltip';
    var VERSION$6 = '4.4.1';
    var DATA_KEY$6 = 'bs.tooltip';
    var EVENT_KEY$6 = "." + DATA_KEY$6;
    var JQUERY_NO_CONFLICT$6 = $.fn[NAME$6];
    var CLASS_PREFIX = 'bs-tooltip';
    var BSCLS_PREFIX_REGEX = new RegExp("(^|\\s)" + CLASS_PREFIX + "\\S+", 'g');
    var DISALLOWED_ATTRIBUTES = ['sanitize', 'whiteList', 'sanitizeFn'];
    var DefaultType$4 = {
        animation: 'boolean',
        template: 'string',
        title: '(string|element|function)',
        trigger: 'string',
        delay: '(number|object)',
        html: 'boolean',
        selector: '(string|boolean)',
        placement: '(string|function)',
        offset: '(number|string|function)',
        container: '(string|element|boolean)',
        fallbackPlacement: '(string|array)',
        boundary: '(string|element)',
        sanitize: 'boolean',
        sanitizeFn: '(null|function)',
        whiteList: 'object',
        popperConfig: '(null|object)'
    };
    var AttachmentMap$1 = {
        AUTO: 'auto',
        TOP: 'top',
        RIGHT: 'right',
        BOTTOM: 'bottom',
        LEFT: 'left'
    };
    var Default$4 = {
        animation: true,
        template: '<div class="tooltip" role="tooltip">' + '<div class="arrow"></div>' + '<div class="tooltip-inner"></div></div>',
        trigger: 'hover focus',
        title: '',
        delay: 0,
        html: false,
        selector: false,
        placement: 'top',
        offset: 0,
        container: false,
        fallbackPlacement: 'flip',
        boundary: 'scrollParent',
        sanitize: true,
        sanitizeFn: null,
        whiteList: DefaultWhitelist,
        popperConfig: null
    };
    var HoverState = {
        SHOW: 'show',
        OUT: 'out'
    };
    var Event$6 = {
        HIDE: "hide" + EVENT_KEY$6,
        HIDDEN: "hidden" + EVENT_KEY$6,
        SHOW: "show" + EVENT_KEY$6,
        SHOWN: "shown" + EVENT_KEY$6,
        INSERTED: "inserted" + EVENT_KEY$6,
        CLICK: "click" + EVENT_KEY$6,
        FOCUSIN: "focusin" + EVENT_KEY$6,
        FOCUSOUT: "focusout" + EVENT_KEY$6,
        MOUSEENTER: "mouseenter" + EVENT_KEY$6,
        MOUSELEAVE: "mouseleave" + EVENT_KEY$6
    };
    var ClassName$6 = {
        FADE: 'fade',
        SHOW: 'show'
    };
    var Selector$6 = {
        TOOLTIP: '.tooltip',
        TOOLTIP_INNER: '.tooltip-inner',
        ARROW: '.arrow'
    };
    var Trigger = {
        HOVER: 'hover',
        FOCUS: 'focus',
        CLICK: 'click',
        MANUAL: 'manual'
    };
    /**
     * ------------------------------------------------------------------------
     * Class Definition
     * ------------------------------------------------------------------------
     */

    var Tooltip =
        /*#__PURE__*/
        function () {
            function Tooltip (element, config) {
                if (typeof Popper === 'undefined') {
                    throw new TypeError('Bootstrap\'s tooltips require Popper.js (https://popper.js.org/)');
                } // private


                this._isEnabled = true;
                this._timeout = 0;
                this._hoverState = '';
                this._activeTrigger = {};
                this._popper = null; // Protected

                this.element = element;
                this.config = this._getConfig(config);
                this.tip = null;

                this._setListeners();
            } // Getters


            var _proto = Tooltip.prototype;

            // Public
            _proto.enable = function enable () {
                this._isEnabled = true;
            };

            _proto.disable = function disable () {
                this._isEnabled = false;
            };

            _proto.toggleEnabled = function toggleEnabled () {
                this._isEnabled = !this._isEnabled;
            };

            _proto.toggle = function toggle (event) {
                if (!this._isEnabled) {
                    return;
                }

                if (event) {
                    var dataKey = this.constructor.DATA_KEY;
                    var context = $(event.currentTarget).data(dataKey);

                    if (!context) {
                        context = new this.constructor(event.currentTarget, this._getDelegateConfig());
                        $(event.currentTarget).data(dataKey, context);
                    }

                    context._activeTrigger.click = !context._activeTrigger.click;

                    if (context._isWithActiveTrigger()) {
                        context._enter(null, context);
                    } else {
                        context._leave(null, context);
                    }
                } else {
                    if ($(this.getTipElement()).hasClass(ClassName$6.SHOW)) {
                        this._leave(null, this);

                        return;
                    }

                    this._enter(null, this);
                }
            };

            _proto.dispose = function dispose () {
                clearTimeout(this._timeout);
                $.removeData(this.element, this.constructor.DATA_KEY);
                $(this.element).off(this.constructor.EVENT_KEY);
                $(this.element).closest('.modal').off('hide.bs.modal', this._hideModalHandler);

                if (this.tip) {
                    $(this.tip).remove();
                }

                this._isEnabled = null;
                this._timeout = null;
                this._hoverState = null;
                this._activeTrigger = null;

                if (this._popper) {
                    this._popper.destroy();
                }

                this._popper = null;
                this.element = null;
                this.config = null;
                this.tip = null;
            };

            _proto.show = function show () {
                var _this = this;

                if ($(this.element).css('display') === 'none') {
                    throw new Error('Please use show on visible elements');
                }

                var showEvent = $.Event(this.constructor.Event.SHOW);

                if (this.isWithContent() && this._isEnabled) {
                    $(this.element).trigger(showEvent);
                    var shadowRoot = Util.findShadowRoot(this.element);
                    var isInTheDom = $.contains(shadowRoot !== null ? shadowRoot : this.element.ownerDocument.documentElement, this.element);

                    if (showEvent.isDefaultPrevented() || !isInTheDom) {
                        return;
                    }

                    var tip = this.getTipElement();
                    var tipId = Util.getUID(this.constructor.NAME);
                    tip.setAttribute('id', tipId);
                    this.element.setAttribute('aria-describedby', tipId);
                    this.setContent();

                    if (this.config.animation) {
                        $(tip).addClass(ClassName$6.FADE);
                    }

                    var placement = typeof this.config.placement === 'function' ? this.config.placement.call(this, tip, this.element) : this.config.placement;

                    var attachment = this._getAttachment(placement);

                    this.addAttachmentClass(attachment);

                    var container = this._getContainer();

                    $(tip).data(this.constructor.DATA_KEY, this);

                    if (!$.contains(this.element.ownerDocument.documentElement, this.tip)) {
                        $(tip).appendTo(container);
                    }

                    $(this.element).trigger(this.constructor.Event.INSERTED);
                    this._popper = new Popper(this.element, tip, this._getPopperConfig(attachment));
                    $(tip).addClass(ClassName$6.SHOW); // 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) {
                        $(document.body).children().on('mouseover', null, $.noop);
                    }

                    var complete = function complete () {
                        if (_this.config.animation) {
                            _this._fixTransition();
                        }

                        var prevHoverState = _this._hoverState;
                        _this._hoverState = null;
                        $(_this.element).trigger(_this.constructor.Event.SHOWN);

                        if (prevHoverState === HoverState.OUT) {
                            _this._leave(null, _this);
                        }
                    };

                    if ($(this.tip).hasClass(ClassName$6.FADE)) {
                        var transitionDuration = Util.getTransitionDurationFromElement(this.tip);
                        $(this.tip).one(Util.TRANSITION_END, complete).emulateTransitionEnd(transitionDuration);
                    } else {
                        complete();
                    }
                }
            };

            _proto.hide = function hide (callback) {
                var _this2 = this;

                var tip = this.getTipElement();
                var hideEvent = $.Event(this.constructor.Event.HIDE);

                var complete = function complete () {
                    if (_this2._hoverState !== HoverState.SHOW && tip.parentNode) {
                        tip.parentNode.removeChild(tip);
                    }

                    _this2._cleanTipClass();

                    _this2.element.removeAttribute('aria-describedby');

                    $(_this2.element).trigger(_this2.constructor.Event.HIDDEN);

                    if (_this2._popper !== null) {
                        _this2._popper.destroy();
                    }

                    if (callback) {
                        callback();
                    }
                };

                $(this.element).trigger(hideEvent);

                if (hideEvent.isDefaultPrevented()) {
                    return;
                }

                $(tip).removeClass(ClassName$6.SHOW); // If this is a touch-enabled device we remove the extra
                // empty mouseover listeners we added for iOS support

                if ('ontouchstart' in document.documentElement) {
                    $(document.body).children().off('mouseover', null, $.noop);
                }

                this._activeTrigger[Trigger.CLICK] = false;
                this._activeTrigger[Trigger.FOCUS] = false;
                this._activeTrigger[Trigger.HOVER] = false;

                if ($(this.tip).hasClass(ClassName$6.FADE)) {
                    var transitionDuration = Util.getTransitionDurationFromElement(tip);
                    $(tip).one(Util.TRANSITION_END, complete).emulateTransitionEnd(transitionDuration);
                } else {
                    complete();
                }

                this._hoverState = '';
            };

            _proto.update = function update () {
                if (this._popper !== null) {
                    this._popper.scheduleUpdate();
                }
            } // Protected
            ;

            _proto.isWithContent = function isWithContent () {
                return Boolean(this.getTitle());
            };

            _proto.addAttachmentClass = function addAttachmentClass (attachment) {
                $(this.getTipElement()).addClass(CLASS_PREFIX + "-" + attachment);
            };

            _proto.getTipElement = function getTipElement () {
                this.tip = this.tip || $(this.config.template)[0];
                return this.tip;
            };

            _proto.setContent = function setContent () {
                var tip = this.getTipElement();
                this.setElementContent($(tip.querySelectorAll(Selector$6.TOOLTIP_INNER)), this.getTitle());
                $(tip).removeClass(ClassName$6.FADE + " " + ClassName$6.SHOW);
            };

            _proto.setElementContent = function setElementContent ($element, content) {
                if (typeof content === 'object' && (content.nodeType || content.jquery)) {
                    // Content is a DOM node or a jQuery
                    if (this.config.html) {
                        if (!$(content).parent().is($element)) {
                            $element.empty().append(content);
                        }
                    } else {
                        $element.text($(content).text());
                    }

                    return;
                }

                if (this.config.html) {
                    if (this.config.sanitize) {
                        content = sanitizeHtml(content, this.config.whiteList, this.config.sanitizeFn);
                    }

                    $element.html(content);
                } else {
                    $element.text(content);
                }
            };

            _proto.getTitle = function getTitle () {
                var title = this.element.getAttribute('data-original-title');

                if (!title) {
                    title = typeof this.config.title === 'function' ? this.config.title.call(this.element) : this.config.title;
                }

                return title;
            } // Private
            ;

            _proto._getPopperConfig = function _getPopperConfig (attachment) {
                var _this3 = this;

                var defaultBsConfig = {
                    placement: attachment,
                    modifiers: {
                        offset: this._getOffset(),
                        flip: {
                            behavior: this.config.fallbackPlacement
                        },
                        arrow: {
                            element: Selector$6.ARROW
                        },
                        preventOverflow: {
                            boundariesElement: this.config.boundary
                        }
                    },
                    onCreate: function onCreate (data) {
                        if (data.originalPlacement !== data.placement) {
                            _this3._handlePopperPlacementChange(data);
                        }
                    },
                    onUpdate: function onUpdate (data) {
                        return _this3._handlePopperPlacementChange(data);
                    }
                };
                return _objectSpread2({}, defaultBsConfig, {}, this.config.popperConfig);
            };

            _proto._getOffset = function _getOffset () {
                var _this4 = this;

                var offset = {};

                if (typeof this.config.offset === 'function') {
                    offset.fn = function (data) {
                        data.offsets = _objectSpread2({}, data.offsets, {}, _this4.config.offset(data.offsets, _this4.element) || {});
                        return data;
                    };
                } else {
                    offset.offset = this.config.offset;
                }

                return offset;
            };

            _proto._getContainer = function _getContainer () {
                if (this.config.container === false) {
                    return document.body;
                }

                if (Util.isElement(this.config.container)) {
                    return $(this.config.container);
                }

                return $(document).find(this.config.container);
            };

            _proto._getAttachment = function _getAttachment (placement) {
                return AttachmentMap$1[placement.toUpperCase()];
            };

            _proto._setListeners = function _setListeners () {
                var _this5 = this;

                var triggers = this.config.trigger.split(' ');
                triggers.forEach(function (trigger) {
                    if (trigger === 'click') {
                        $(_this5.element).on(_this5.constructor.Event.CLICK, _this5.config.selector, function (event) {
                            return _this5.toggle(event);
                        });
                    } else if (trigger !== Trigger.MANUAL) {
                        var eventIn = trigger === Trigger.HOVER ? _this5.constructor.Event.MOUSEENTER : _this5.constructor.Event.FOCUSIN;
                        var eventOut = trigger === Trigger.HOVER ? _this5.constructor.Event.MOUSELEAVE : _this5.constructor.Event.FOCUSOUT;
                        $(_this5.element).on(eventIn, _this5.config.selector, function (event) {
                            return _this5._enter(event);
                        }).on(eventOut, _this5.config.selector, function (event) {
                            return _this5._leave(event);
                        });
                    }
                });

                this._hideModalHandler = function () {
                    if (_this5.element) {
                        _this5.hide();
                    }
                };

                $(this.element).closest('.modal').on('hide.bs.modal', this._hideModalHandler);

                if (this.config.selector) {
                    this.config = _objectSpread2({}, this.config, {
                        trigger: 'manual',
                        selector: ''
                    });
                } else {
                    this._fixTitle();
                }
            };

            _proto._fixTitle = function _fixTitle () {
                var titleType = typeof this.element.getAttribute('data-original-title');

                if (this.element.getAttribute('title') || titleType !== 'string') {
                    this.element.setAttribute('data-original-title', this.element.getAttribute('title') || '');
                    this.element.setAttribute('title', '');
                }
            };

            _proto._enter = function _enter (event, context) {
                var dataKey = this.constructor.DATA_KEY;
                context = context || $(event.currentTarget).data(dataKey);

                if (!context) {
                    context = new this.constructor(event.currentTarget, this._getDelegateConfig());
                    $(event.currentTarget).data(dataKey, context);
                }

                if (event) {
                    context._activeTrigger[event.type === 'focusin' ? Trigger.FOCUS : Trigger.HOVER] = true;
                }

                if ($(context.getTipElement()).hasClass(ClassName$6.SHOW) || context._hoverState === HoverState.SHOW) {
                    context._hoverState = HoverState.SHOW;
                    return;
                }

                clearTimeout(context._timeout);
                context._hoverState = HoverState.SHOW;

                if (!context.config.delay || !context.config.delay.show) {
                    context.show();
                    return;
                }

                context._timeout = setTimeout(function () {
                    if (context._hoverState === HoverState.SHOW) {
                        context.show();
                    }
                }, context.config.delay.show);
            };

            _proto._leave = function _leave (event, context) {
                var dataKey = this.constructor.DATA_KEY;
                context = context || $(event.currentTarget).data(dataKey);

                if (!context) {
                    context = new this.constructor(event.currentTarget, this._getDelegateConfig());
                    $(event.currentTarget).data(dataKey, context);
                }

                if (event) {
                    context._activeTrigger[event.type === 'focusout' ? Trigger.FOCUS : Trigger.HOVER] = false;
                }

                if (context._isWithActiveTrigger()) {
                    return;
                }

                clearTimeout(context._timeout);
                context._hoverState = HoverState.OUT;

                if (!context.config.delay || !context.config.delay.hide) {
                    context.hide();
                    return;
                }

                context._timeout = setTimeout(function () {
                    if (context._hoverState === HoverState.OUT) {
                        context.hide();
                    }
                }, context.config.delay.hide);
            };

            _proto._isWithActiveTrigger = function _isWithActiveTrigger () {
                for (var trigger in this._activeTrigger) {
                    if (this._activeTrigger[trigger]) {
                        return true;
                    }
                }

                return false;
            };

            _proto._getConfig = function _getConfig (config) {
                var dataAttributes = $(this.element).data();
                Object.keys(dataAttributes).forEach(function (dataAttr) {
                    if (DISALLOWED_ATTRIBUTES.indexOf(dataAttr) !== -1) {
                        delete dataAttributes[dataAttr];
                    }
                });
                config = _objectSpread2({}, this.constructor.Default, {}, dataAttributes, {}, typeof config === 'object' && config ? config : {});

                if (typeof config.delay === 'number') {
                    config.delay = {
                        show: config.delay,
                        hide: config.delay
                    };
                }

                if (typeof config.title === 'number') {
                    config.title = config.title.toString();
                }

                if (typeof config.content === 'number') {
                    config.content = config.content.toString();
                }

                Util.typeCheckConfig(NAME$6, config, this.constructor.DefaultType);

                if (config.sanitize) {
                    config.template = sanitizeHtml(config.template, config.whiteList, config.sanitizeFn);
                }

                return config;
            };

            _proto._getDelegateConfig = function _getDelegateConfig () {
                var config = {};

                if (this.config) {
                    for (var key in this.config) {
                        if (this.constructor.Default[key] !== this.config[key]) {
                            config[key] = this.config[key];
                        }
                    }
                }

                return config;
            };

            _proto._cleanTipClass = function _cleanTipClass () {
                var $tip = $(this.getTipElement());
                var tabClass = $tip.attr('class').match(BSCLS_PREFIX_REGEX);

                if (tabClass !== null && tabClass.length) {
                    $tip.removeClass(tabClass.join(''));
                }
            };

            _proto._handlePopperPlacementChange = function _handlePopperPlacementChange (popperData) {
                var popperInstance = popperData.instance;
                this.tip = popperInstance.popper;

                this._cleanTipClass();

                this.addAttachmentClass(this._getAttachment(popperData.placement));
            };

            _proto._fixTransition = function _fixTransition () {
                var tip = this.getTipElement();
                var initConfigAnimation = this.config.animation;

                if (tip.getAttribute('x-placement') !== null) {
                    return;
                }

                $(tip).removeClass(ClassName$6.FADE);
                this.config.animation = false;
                this.hide();
                this.show();
                this.config.animation = initConfigAnimation;
            } // Static
            ;

            Tooltip._jQueryInterface = function _jQueryInterface (config) {
                return this.each(function () {
                    var data = $(this).data(DATA_KEY$6);

                    var _config = typeof config === 'object' && config;

                    if (!data && /dispose|hide/.test(config)) {
                        return;
                    }

                    if (!data) {
                        data = new Tooltip(this, _config);
                        $(this).data(DATA_KEY$6, data);
                    }

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

                        data[config]();
                    }
                });
            };

            _createClass(Tooltip, null, [{
                key: "VERSION",
                get: function get () {
                    return VERSION$6;
                }
            }, {
                key: "Default",
                get: function get () {
                    return Default$4;
                }
            }, {
                key: "NAME",
                get: function get () {
                    return NAME$6;
                }
            }, {
                key: "DATA_KEY",
                get: function get () {
                    return DATA_KEY$6;
                }
            }, {
                key: "Event",
                get: function get () {
                    return Event$6;
                }
            }, {
                key: "EVENT_KEY",
                get: function get () {
                    return EVENT_KEY$6;
                }
            }, {
                key: "DefaultType",
                get: function get () {
                    return DefaultType$4;
                }
            }]);

            return Tooltip;
        }();
    /**
     * ------------------------------------------------------------------------
     * jQuery
     * ------------------------------------------------------------------------
     */


    $.fn[NAME$6] = Tooltip._jQueryInterface;
    $.fn[NAME$6].Constructor = Tooltip;

    $.fn[NAME$6].noConflict = function () {
        $.fn[NAME$6] = JQUERY_NO_CONFLICT$6;
        return Tooltip._jQueryInterface;
    };

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

    var NAME$7 = 'popover';
    var VERSION$7 = '4.4.1';
    var DATA_KEY$7 = 'bs.popover';
    var EVENT_KEY$7 = "." + DATA_KEY$7;
    var JQUERY_NO_CONFLICT$7 = $.fn[NAME$7];
    var CLASS_PREFIX$1 = 'bs-popover';
    var BSCLS_PREFIX_REGEX$1 = new RegExp("(^|\\s)" + CLASS_PREFIX$1 + "\\S+", 'g');

    var Default$5 = _objectSpread2({}, Tooltip.Default, {
        placement: 'right',
        trigger: 'click',
        content: '',
        template: '<div class="popover" role="tooltip">' + '<div class="arrow"></div>' + '<h3 class="popover-header"></h3>' + '<div class="popover-body"></div></div>'
    });

    var DefaultType$5 = _objectSpread2({}, Tooltip.DefaultType, {
        content: '(string|element|function)'
    });

    var ClassName$7 = {
        FADE: 'fade',
        SHOW: 'show'
    };
    var Selector$7 = {
        TITLE: '.popover-header',
        CONTENT: '.popover-body'
    };
    var Event$7 = {
        HIDE: "hide" + EVENT_KEY$7,
        HIDDEN: "hidden" + EVENT_KEY$7,
        SHOW: "show" + EVENT_KEY$7,
        SHOWN: "shown" + EVENT_KEY$7,
        INSERTED: "inserted" + EVENT_KEY$7,
        CLICK: "click" + EVENT_KEY$7,
        FOCUSIN: "focusin" + EVENT_KEY$7,
        FOCUSOUT: "focusout" + EVENT_KEY$7,
        MOUSEENTER: "mouseenter" + EVENT_KEY$7,
        MOUSELEAVE: "mouseleave" + EVENT_KEY$7
    };
    /**
     * ------------------------------------------------------------------------
     * Class Definition
     * ------------------------------------------------------------------------
     */

    var Popover =
        /*#__PURE__*/
        function (_Tooltip) {
            _inheritsLoose(Popover, _Tooltip);

            function Popover () {
                return _Tooltip.apply(this, arguments) || this;
            }

            var _proto = Popover.prototype;

            // Overrides
            _proto.isWithContent = function isWithContent () {
                return this.getTitle() || this._getContent();
            };

            _proto.addAttachmentClass = function addAttachmentClass (attachment) {
                $(this.getTipElement()).addClass(CLASS_PREFIX$1 + "-" + attachment);
            };

            _proto.getTipElement = function getTipElement () {
                this.tip = this.tip || $(this.config.template)[0];
                return this.tip;
            };

            _proto.setContent = function setContent () {
                var $tip = $(this.getTipElement()); // We use append for html objects to maintain js events

                this.setElementContent($tip.find(Selector$7.TITLE), this.getTitle());

                var content = this._getContent();

                if (typeof content === 'function') {
                    content = content.call(this.element);
                }

                this.setElementContent($tip.find(Selector$7.CONTENT), content);
                $tip.removeClass(ClassName$7.FADE + " " + ClassName$7.SHOW);
            } // Private
            ;

            _proto._getContent = function _getContent () {
                return this.element.getAttribute('data-content') || this.config.content;
            };

            _proto._cleanTipClass = function _cleanTipClass () {
                var $tip = $(this.getTipElement());
                var tabClass = $tip.attr('class').match(BSCLS_PREFIX_REGEX$1);

                if (tabClass !== null && tabClass.length > 0) {
                    $tip.removeClass(tabClass.join(''));
                }
            } // Static
            ;

            Popover._jQueryInterface = function _jQueryInterface (config) {
                return this.each(function () {
                    var data = $(this).data(DATA_KEY$7);

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

                    if (!data && /dispose|hide/.test(config)) {
                        return;
                    }

                    if (!data) {
                        data = new Popover(this, _config);
                        $(this).data(DATA_KEY$7, data);
                    }

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

                        data[config]();
                    }
                });
            };

            _createClass(Popover, null, [{
                key: "VERSION",
                // Getters
                get: function get () {
                    return VERSION$7;
                }
            }, {
                key: "Default",
                get: function get () {
                    return Default$5;
                }
            }, {
                key: "NAME",
                get: function get () {
                    return NAME$7;
                }
            }, {
                key: "DATA_KEY",
                get: function get () {
                    return DATA_KEY$7;
                }
            }, {
                key: "Event",
                get: function get () {
                    return Event$7;
                }
            }, {
                key: "EVENT_KEY",
                get: function get () {
                    return EVENT_KEY$7;
                }
            }, {
                key: "DefaultType",
                get: function get () {
                    return DefaultType$5;
                }
            }]);

            return Popover;
        }(Tooltip);
    /**
     * ------------------------------------------------------------------------
     * jQuery
     * ------------------------------------------------------------------------
     */


    $.fn[NAME$7] = Popover._jQueryInterface;
    $.fn[NAME$7].Constructor = Popover;

    $.fn[NAME$7].noConflict = function () {
        $.fn[NAME$7] = JQUERY_NO_CONFLICT$7;
        return Popover._jQueryInterface;
    };

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

    var NAME$8 = 'scrollspy';
    var VERSION$8 = '4.4.1';
    var DATA_KEY$8 = 'bs.scrollspy';
    var EVENT_KEY$8 = "." + DATA_KEY$8;
    var DATA_API_KEY$6 = '.data-api';
    var JQUERY_NO_CONFLICT$8 = $.fn[NAME$8];
    var Default$6 = {
        offset: 10,
        method: 'auto',
        target: ''
    };
    var DefaultType$6 = {
        offset: 'number',
        method: 'string',
        target: '(string|element)'
    };
    var Event$8 = {
        ACTIVATE: "activate" + EVENT_KEY$8,
        SCROLL: "scroll" + EVENT_KEY$8,
        LOAD_DATA_API: "load" + EVENT_KEY$8 + DATA_API_KEY$6
    };
    var ClassName$8 = {
        DROPDOWN_ITEM: 'dropdown-item',
        DROPDOWN_MENU: 'dropdown-menu',
        ACTIVE: 'active'
    };
    var Selector$8 = {
        DATA_SPY: '[data-spy="scroll"]',
        ACTIVE: '.active',
        NAV_LIST_GROUP: '.nav, .list-group',
        NAV_LINKS: '.nav-link',
        NAV_ITEMS: '.nav-item',
        LIST_ITEMS: '.list-group-item',
        DROPDOWN: '.dropdown',
        DROPDOWN_ITEMS: '.dropdown-item',
        DROPDOWN_TOGGLE: '.dropdown-toggle'
    };
    var OffsetMethod = {
        OFFSET: 'offset',
        POSITION: 'position'
    };
    /**
     * ------------------------------------------------------------------------
     * Class Definition
     * ------------------------------------------------------------------------
     */

    var ScrollSpy =
        /*#__PURE__*/
        function () {
            function ScrollSpy (element, config) {
                var _this = this;

                this._element = element;
                this._scrollElement = element.tagName === 'BODY' ? window : element;
                this._config = this._getConfig(config);
                this._selector = this._config.target + " " + Selector$8.NAV_LINKS + "," + (this._config.target + " " + Selector$8.LIST_ITEMS + ",") + (this._config.target + " " + Selector$8.DROPDOWN_ITEMS);
                this._offsets = [];
                this._targets = [];
                this._activeTarget = null;
                this._scrollHeight = 0;
                $(this._scrollElement).on(Event$8.SCROLL, function (event) {
                    return _this._process(event);
                });
                this.refresh();

                this._process();
            } // Getters


            var _proto = ScrollSpy.prototype;

            // Public
            _proto.refresh = function refresh () {
                var _this2 = this;

                var autoMethod = this._scrollElement === this._scrollElement.window ? OffsetMethod.OFFSET : OffsetMethod.POSITION;
                var offsetMethod = this._config.method === 'auto' ? autoMethod : this._config.method;
                var offsetBase = offsetMethod === OffsetMethod.POSITION ? this._getScrollTop() : 0;
                this._offsets = [];
                this._targets = [];
                this._scrollHeight = this._getScrollHeight();
                var targets = [].slice.call(document.querySelectorAll(this._selector));
                targets.map(function (element) {
                    var target;
                    var targetSelector = Util.getSelectorFromElement(element);

                    if (targetSelector) {
                        target = document.querySelector(targetSelector);
                    }

                    if (target) {
                        var targetBCR = target.getBoundingClientRect();

                        if (targetBCR.width || targetBCR.height) {
                            // TODO (fat): remove sketch reliance on jQuery position/offset
                            return [$(target)[offsetMethod]().top + offsetBase, targetSelector];
                        }
                    }

                    return null;
                }).filter(function (item) {
                    return item;
                }).sort(function (a, b) {
                    return a[0] - b[0];
                }).forEach(function (item) {
                    _this2._offsets.push(item[0]);

                    _this2._targets.push(item[1]);
                });
            };

            _proto.dispose = function dispose () {
                $.removeData(this._element, DATA_KEY$8);
                $(this._scrollElement).off(EVENT_KEY$8);
                this._element = null;
                this._scrollElement = null;
                this._config = null;
                this._selector = null;
                this._offsets = null;
                this._targets = null;
                this._activeTarget = null;
                this._scrollHeight = null;
            } // Private
            ;

            _proto._getConfig = function _getConfig (config) {
                config = _objectSpread2({}, Default$6, {}, typeof config === 'object' && config ? config : {});

                if (typeof config.target !== 'string') {
                    var id = $(config.target).attr('id');

                    if (!id) {
                        id = Util.getUID(NAME$8);
                        $(config.target).attr('id', id);
                    }

                    config.target = "#" + id;
                }

                Util.typeCheckConfig(NAME$8, config, DefaultType$6);
                return config;
            };

            _proto._getScrollTop = function _getScrollTop () {
                return this._scrollElement === window ? this._scrollElement.pageYOffset : this._scrollElement.scrollTop;
            };

            _proto._getScrollHeight = function _getScrollHeight () {
                return this._scrollElement.scrollHeight || Math.max(document.body.scrollHeight, document.documentElement.scrollHeight);
            };

            _proto._getOffsetHeight = function _getOffsetHeight () {
                return this._scrollElement === window ? window.innerHeight : this._scrollElement.getBoundingClientRect().height;
            };

            _proto._process = function _process () {
                var scrollTop = this._getScrollTop() + this._config.offset;

                var scrollHeight = this._getScrollHeight();

                var maxScroll = this._config.offset + scrollHeight - this._getOffsetHeight();

                if (this._scrollHeight !== scrollHeight) {
                    this.refresh();
                }

                if (scrollTop >= maxScroll) {
                    var target = this._targets[this._targets.length - 1];

                    if (this._activeTarget !== target) {
                        this._activate(target);
                    }

                    return;
                }

                if (this._activeTarget && scrollTop < this._offsets[0] && this._offsets[0] > 0) {
                    this._activeTarget = null;

                    this._clear();

                    return;
                }

                var offsetLength = this._offsets.length;

                for (var i = offsetLength; i--;) {
                    var isActiveTarget = this._activeTarget !== this._targets[i] && scrollTop >= this._offsets[i] && (typeof this._offsets[i + 1] === 'undefined' || scrollTop < this._offsets[i + 1]);

                    if (isActiveTarget) {
                        this._activate(this._targets[i]);
                    }
                }
            };

            _proto._activate = function _activate (target) {
                this._activeTarget = target;

                this._clear();

                var queries = this._selector.split(',').map(function (selector) {
                    return selector + "[data-target=\"" + target + "\"]," + selector + "[href=\"" + target + "\"]";
                });

                var $link = $([].slice.call(document.querySelectorAll(queries.join(','))));

                if ($link.hasClass(ClassName$8.DROPDOWN_ITEM)) {
                    $link.closest(Selector$8.DROPDOWN).find(Selector$8.DROPDOWN_TOGGLE).addClass(ClassName$8.ACTIVE);
                    $link.addClass(ClassName$8.ACTIVE);
                } else {
                    // Set triggered link as active
                    $link.addClass(ClassName$8.ACTIVE); // Set triggered links parents as active
                    // With both <ul> and <nav> markup a parent is the previous sibling of any nav ancestor

                    $link.parents(Selector$8.NAV_LIST_GROUP).prev(Selector$8.NAV_LINKS + ", " + Selector$8.LIST_ITEMS).addClass(ClassName$8.ACTIVE); // Handle special case when .nav-link is inside .nav-item

                    $link.parents(Selector$8.NAV_LIST_GROUP).prev(Selector$8.NAV_ITEMS).children(Selector$8.NAV_LINKS).addClass(ClassName$8.ACTIVE);
                }

                $(this._scrollElement).trigger(Event$8.ACTIVATE, {
                    relatedTarget: target
                });
            };

            _proto._clear = function _clear () {
                [].slice.call(document.querySelectorAll(this._selector)).filter(function (node) {
                    return node.classList.contains(ClassName$8.ACTIVE);
                }).forEach(function (node) {
                    return node.classList.remove(ClassName$8.ACTIVE);
                });
            } // Static
            ;

            ScrollSpy._jQueryInterface = function _jQueryInterface (config) {
                return this.each(function () {
                    var data = $(this).data(DATA_KEY$8);

                    var _config = typeof config === 'object' && config;

                    if (!data) {
                        data = new ScrollSpy(this, _config);
                        $(this).data(DATA_KEY$8, data);
                    }

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

                        data[config]();
                    }
                });
            };

            _createClass(ScrollSpy, null, [{
                key: "VERSION",
                get: function get () {
                    return VERSION$8;
                }
            }, {
                key: "Default",
                get: function get () {
                    return Default$6;
                }
            }]);

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


    $(window).on(Event$8.LOAD_DATA_API, function () {
        var scrollSpys = [].slice.call(document.querySelectorAll(Selector$8.DATA_SPY));
        var scrollSpysLength = scrollSpys.length;

        for (var i = scrollSpysLength; i--;) {
            var $spy = $(scrollSpys[i]);

            ScrollSpy._jQueryInterface.call($spy, $spy.data());
        }
    });
    /**
     * ------------------------------------------------------------------------
     * jQuery
     * ------------------------------------------------------------------------
     */

    $.fn[NAME$8] = ScrollSpy._jQueryInterface;
    $.fn[NAME$8].Constructor = ScrollSpy;

    $.fn[NAME$8].noConflict = function () {
        $.fn[NAME$8] = JQUERY_NO_CONFLICT$8;
        return ScrollSpy._jQueryInterface;
    };

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

    var NAME$9 = 'tab';
    var VERSION$9 = '4.4.1';
    var DATA_KEY$9 = 'bs.tab';
    var EVENT_KEY$9 = "." + DATA_KEY$9;
    var DATA_API_KEY$7 = '.data-api';
    var JQUERY_NO_CONFLICT$9 = $.fn[NAME$9];
    var Event$9 = {
        HIDE: "hide" + EVENT_KEY$9,
        HIDDEN: "hidden" + EVENT_KEY$9,
        SHOW: "show" + EVENT_KEY$9,
        SHOWN: "shown" + EVENT_KEY$9,
        CLICK_DATA_API: "click" + EVENT_KEY$9 + DATA_API_KEY$7
    };
    var ClassName$9 = {
        DROPDOWN_MENU: 'dropdown-menu',
        ACTIVE: 'active',
        DISABLED: 'disabled',
        FADE: 'fade',
        SHOW: 'show'
    };
    var Selector$9 = {
        DROPDOWN: '.dropdown',
        NAV_LIST_GROUP: '.nav, .list-group',
        ACTIVE: '.active',
        ACTIVE_UL: '> li > .active',
        DATA_TOGGLE: '[data-toggle="tab"], [data-toggle="pill"], [data-toggle="list"]',
        DROPDOWN_TOGGLE: '.dropdown-toggle',
        DROPDOWN_ACTIVE_CHILD: '> .dropdown-menu .active'
    };
    /**
     * ------------------------------------------------------------------------
     * Class Definition
     * ------------------------------------------------------------------------
     */

    var Tab =
        /*#__PURE__*/
        function () {
            function Tab (element) {
                this._element = element;
            } // Getters


            var _proto = Tab.prototype;

            // Public
            _proto.show = function show () {
                var _this = this;

                if (this._element.parentNode && this._element.parentNode.nodeType === Node.ELEMENT_NODE && $(this._element).hasClass(ClassName$9.ACTIVE) || $(this._element).hasClass(ClassName$9.DISABLED)) {
                    return;
                }

                var target;
                var previous;
                var listElement = $(this._element).closest(Selector$9.NAV_LIST_GROUP)[0];
                var selector = Util.getSelectorFromElement(this._element);

                if (listElement) {
                    var itemSelector = listElement.nodeName === 'UL' || listElement.nodeName === 'OL' ? Selector$9.ACTIVE_UL : Selector$9.ACTIVE;
                    previous = $.makeArray($(listElement).find(itemSelector));
                    previous = previous[previous.length - 1];
                }

                var hideEvent = $.Event(Event$9.HIDE, {
                    relatedTarget: this._element
                });
                var showEvent = $.Event(Event$9.SHOW, {
                    relatedTarget: previous
                });

                if (previous) {
                    $(previous).trigger(hideEvent);
                }

                $(this._element).trigger(showEvent);

                if (showEvent.isDefaultPrevented() || hideEvent.isDefaultPrevented()) {
                    return;
                }

                if (selector) {
                    target = document.querySelector(selector);
                }

                this._activate(this._element, listElement);

                var complete = function complete () {
                    var hiddenEvent = $.Event(Event$9.HIDDEN, {
                        relatedTarget: _this._element
                    });
                    var shownEvent = $.Event(Event$9.SHOWN, {
                        relatedTarget: previous
                    });
                    $(previous).trigger(hiddenEvent);
                    $(_this._element).trigger(shownEvent);
                };

                if (target) {
                    this._activate(target, target.parentNode, complete);
                } else {
                    complete();
                }
            };

            _proto.dispose = function dispose () {
                $.removeData(this._element, DATA_KEY$9);
                this._element = null;
            } // Private
            ;

            _proto._activate = function _activate (element, container, callback) {
                var _this2 = this;

                var activeElements = container && (container.nodeName === 'UL' || container.nodeName === 'OL') ? $(container).find(Selector$9.ACTIVE_UL) : $(container).children(Selector$9.ACTIVE);
                var active = activeElements[0];
                var isTransitioning = callback && active && $(active).hasClass(ClassName$9.FADE);

                var complete = function complete () {
                    return _this2._transitionComplete(element, active, callback);
                };

                if (active && isTransitioning) {
                    var transitionDuration = Util.getTransitionDurationFromElement(active);
                    $(active).removeClass(ClassName$9.SHOW).one(Util.TRANSITION_END, complete).emulateTransitionEnd(transitionDuration);
                } else {
                    complete();
                }
            };

            _proto._transitionComplete = function _transitionComplete (element, active, callback) {
                if (active) {
                    $(active).removeClass(ClassName$9.ACTIVE);
                    var dropdownChild = $(active.parentNode).find(Selector$9.DROPDOWN_ACTIVE_CHILD)[0];

                    if (dropdownChild) {
                        $(dropdownChild).removeClass(ClassName$9.ACTIVE);
                    }

                    if (active.getAttribute('role') === 'tab') {
                        active.setAttribute('aria-selected', false);
                    }
                }

                $(element).addClass(ClassName$9.ACTIVE);

                if (element.getAttribute('role') === 'tab') {
                    element.setAttribute('aria-selected', true);
                }

                Util.reflow(element);

                if (element.classList.contains(ClassName$9.FADE)) {
                    element.classList.add(ClassName$9.SHOW);
                }

                if (element.parentNode && $(element.parentNode).hasClass(ClassName$9.DROPDOWN_MENU)) {
                    var dropdownElement = $(element).closest(Selector$9.DROPDOWN)[0];

                    if (dropdownElement) {
                        var dropdownToggleList = [].slice.call(dropdownElement.querySelectorAll(Selector$9.DROPDOWN_TOGGLE));
                        $(dropdownToggleList).addClass(ClassName$9.ACTIVE);
                    }

                    element.setAttribute('aria-expanded', true);
                }

                if (callback) {
                    callback();
                }
            } // Static
            ;

            Tab._jQueryInterface = function _jQueryInterface (config) {
                return this.each(function () {
                    var $this = $(this);
                    var data = $this.data(DATA_KEY$9);

                    if (!data) {
                        data = new Tab(this);
                        $this.data(DATA_KEY$9, data);
                    }

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

                        data[config]();
                    }
                });
            };

            _createClass(Tab, null, [{
                key: "VERSION",
                get: function get () {
                    return VERSION$9;
                }
            }]);

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


    $(document).on(Event$9.CLICK_DATA_API, Selector$9.DATA_TOGGLE, function (event) {
        event.preventDefault();

        Tab._jQueryInterface.call($(this), 'show');
    });
    /**
     * ------------------------------------------------------------------------
     * jQuery
     * ------------------------------------------------------------------------
     */

    $.fn[NAME$9] = Tab._jQueryInterface;
    $.fn[NAME$9].Constructor = Tab;

    $.fn[NAME$9].noConflict = function () {
        $.fn[NAME$9] = JQUERY_NO_CONFLICT$9;
        return Tab._jQueryInterface;
    };

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

    var NAME$a = 'toast';
    var VERSION$a = '4.4.1';
    var DATA_KEY$a = 'bs.toast';
    var EVENT_KEY$a = "." + DATA_KEY$a;
    var JQUERY_NO_CONFLICT$a = $.fn[NAME$a];
    var Event$a = {
        CLICK_DISMISS: "click.dismiss" + EVENT_KEY$a,
        HIDE: "hide" + EVENT_KEY$a,
        HIDDEN: "hidden" + EVENT_KEY$a,
        SHOW: "show" + EVENT_KEY$a,
        SHOWN: "shown" + EVENT_KEY$a
    };
    var ClassName$a = {
        FADE: 'fade',
        HIDE: 'hide',
        SHOW: 'show',
        SHOWING: 'showing'
    };
    var DefaultType$7 = {
        animation: 'boolean',
        autohide: 'boolean',
        delay: 'number'
    };
    var Default$7 = {
        animation: true,
        autohide: true,
        delay: 500
    };
    var Selector$a = {
        DATA_DISMISS: '[data-dismiss="toast"]'
    };
    /**
     * ------------------------------------------------------------------------
     * Class Definition
     * ------------------------------------------------------------------------
     */

    var Toast =
        /*#__PURE__*/
        function () {
            function Toast (element, config) {
                this._element = element;
                this._config = this._getConfig(config);
                this._timeout = null;

                this._setListeners();
            } // Getters


            var _proto = Toast.prototype;

            // Public
            _proto.show = function show () {
                var _this = this;

                var showEvent = $.Event(Event$a.SHOW);
                $(this._element).trigger(showEvent);

                if (showEvent.isDefaultPrevented()) {
                    return;
                }

                if (this._config.animation) {
                    this._element.classList.add(ClassName$a.FADE);
                }

                var complete = function complete () {
                    _this._element.classList.remove(ClassName$a.SHOWING);

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

                    $(_this._element).trigger(Event$a.SHOWN);

                    if (_this._config.autohide) {
                        _this._timeout = setTimeout(function () {
                            _this.hide();
                        }, _this._config.delay);
                    }
                };

                this._element.classList.remove(ClassName$a.HIDE);

                Util.reflow(this._element);

                this._element.classList.add(ClassName$a.SHOWING);

                if (this._config.animation) {
                    var transitionDuration = Util.getTransitionDurationFromElement(this._element);
                    $(this._element).one(Util.TRANSITION_END, complete).emulateTransitionEnd(transitionDuration);
                } else {
                    complete();
                }
            };

            _proto.hide = function hide () {
                if (!this._element.classList.contains(ClassName$a.SHOW)) {
                    return;
                }

                var hideEvent = $.Event(Event$a.HIDE);
                $(this._element).trigger(hideEvent);

                if (hideEvent.isDefaultPrevented()) {
                    return;
                }

                this._close();
            };

            _proto.dispose = function dispose () {
                clearTimeout(this._timeout);
                this._timeout = null;

                if (this._element.classList.contains(ClassName$a.SHOW)) {
                    this._element.classList.remove(ClassName$a.SHOW);
                }

                $(this._element).off(Event$a.CLICK_DISMISS);
                $.removeData(this._element, DATA_KEY$a);
                this._element = null;
                this._config = null;
            } // Private
            ;

            _proto._getConfig = function _getConfig (config) {
                config = _objectSpread2({}, Default$7, {}, $(this._element).data(), {}, typeof config === 'object' && config ? config : {});
                Util.typeCheckConfig(NAME$a, config, this.constructor.DefaultType);
                return config;
            };

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

                $(this._element).on(Event$a.CLICK_DISMISS, Selector$a.DATA_DISMISS, function () {
                    return _this2.hide();
                });
            };

            _proto._close = function _close () {
                var _this3 = this;

                var complete = function complete () {
                    _this3._element.classList.add(ClassName$a.HIDE);

                    $(_this3._element).trigger(Event$a.HIDDEN);
                };

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

                if (this._config.animation) {
                    var transitionDuration = Util.getTransitionDurationFromElement(this._element);
                    $(this._element).one(Util.TRANSITION_END, complete).emulateTransitionEnd(transitionDuration);
                } else {
                    complete();
                }
            } // Static
            ;

            Toast._jQueryInterface = function _jQueryInterface (config) {
                return this.each(function () {
                    var $element = $(this);
                    var data = $element.data(DATA_KEY$a);

                    var _config = typeof config === 'object' && config;

                    if (!data) {
                        data = new Toast(this, _config);
                        $element.data(DATA_KEY$a, data);
                    }

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

                        data[config](this);
                    }
                });
            };

            _createClass(Toast, null, [{
                key: "VERSION",
                get: function get () {
                    return VERSION$a;
                }
            }, {
                key: "DefaultType",
                get: function get () {
                    return DefaultType$7;
                }
            }, {
                key: "Default",
                get: function get () {
                    return Default$7;
                }
            }]);

            return Toast;
        }();
    /**
     * ------------------------------------------------------------------------
     * jQuery
     * ------------------------------------------------------------------------
     */


    $.fn[NAME$a] = Toast._jQueryInterface;
    $.fn[NAME$a].Constructor = Toast;

    $.fn[NAME$a].noConflict = function () {
        $.fn[NAME$a] = JQUERY_NO_CONFLICT$a;
        return Toast._jQueryInterface;
    };

    exports.Alert = Alert;
    exports.Button = Button;
    exports.Carousel = Carousel;
    exports.Collapse = Collapse;
    exports.Dropdown = Dropdown;
    exports.Modal = Modal;
    exports.Popover = Popover;
    exports.Scrollspy = ScrollSpy;
    exports.Tab = Tab;
    exports.Toast = Toast;
    exports.Tooltip = Tooltip;
    exports.Util = Util;

    Object.defineProperty(exports, '__esModule', {value: true});

})));
//# sourceMappingURL=bootstrap.bundle.js.map