diff --git a/CHANGELOG.md b/CHANGELOG.md index ec9730a..16b8a44 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -1,3 +1,16 @@ +## 2.0 + +This is backward incompatible version, as the templates moved to `passkeys` folder +and the names are lowercase now. please check the README.md for more details. + +* Upgraded the FIDO2 dependency to be >1.1.1. +* Added `login_required` to some functions +* `delKey` accepts POST now not GET. + +Thanks for [smark-1](https://github.com/smark-1) and [rafaelurben](https://github.com/rafaelurben) for the work done in the release + + + ## v1.2.7 * Fix: issue if the user isn't defined by username field #25. diff --git a/README.md b/README.md index 7b57616..82838a0 100644 --- a/README.md +++ b/README.md @@ -23,13 +23,13 @@ Passkeys are now supported on On May 3, 2023, Google allowed the use of Passkeys for the users to login, killing the password for enrolled users. -# Installation +## Installation `pip install django-passkeys` Currently, it support Django 2.0+, Python 3.7+ -# Usage +## Usage 1. in your settings.py add the application to your installed apps ```python INSTALLED_APPS=( @@ -44,27 +44,33 @@ Currently, it support Django 2.0+, Python 3.7+ 4. Add the following settings to your file ```python - AUTHENTICATION_BACKENDS = ['passkeys.backend.PasskeyModelBackend'] # Change your authentication backend - FIDO_SERVER_ID="localhost" # Server rp id for FIDO2, it the full domain of your project - FIDO_SERVER_NAME="TestApp" - import passkeys - KEY_ATTACHMENT = None | passkeys.Attachment.CROSS_PLATFORM | passkeys.Attachment.PLATFORM + import passkeys + + # Change your authentication backend + AUTHENTICATION_BACKENDS = ['passkeys.backend.PasskeyModelBackend'] + + # Server rp id for FIDO2, it the full domain of your project + FIDO_SERVER_ID="localhost" + + FIDO_SERVER_NAME="TestApp" + + KEY_ATTACHMENT = None | passkeys.Attachment.CROSS_PLATFORM | passkeys.Attachment.PLATFORM ``` **Note**: Starting v1.1, `FIDO_SERVER_ID` and/or `FIDO_SERVER_NAME` can be a callable to support multi-tenants web applications, the `request` is passed to the called function. 5. Add passkeys to urls.py - ```python - + ```python urls_patterns= [ - '...', - url(r'^passkeys/', include('passkeys.urls')), - '....', + '...', + path('passkeys/', include('passkeys.urls')), + '....', ] ``` 6. To match the look and feel of your project, Passkeys includes `base.html` but it needs blocks named `head` & `content` to added its content to it. + **Notes:** - 1. You can override `PassKeys_base.html` which is used by `Passkeys.html` so you can control the styling better and current `Passkeys_base.html` extends `base.html` - 1. Currently, `PassKeys_base.html` needs JQuery and bootstrap. + 1. You can override `passkeys/passkeys_base.html` which is used by `passkeys/passkeys.html` so you can control the styling better and current `passkeys/passkeys_base.html` extends `base.html` + 1. Currently, `passkeys/passkeys_base.html` needs bootstrap 5. 7. Somewhere in your app, add a link to 'passkeys:home' ```
  • Passkeys
    • ``` @@ -77,13 +83,20 @@ Currently, it support Django 2.0+, Python 3.7+ * Give an id to your login form e.g 'loginForm', the id should be provided when calling `authn` function * Inside the form, add ```html - - - {%include 'passkeys.js' %} +
    {% csrf_token %} + ... + + + +
    + ``` For Example, See 'example' app and look at EXAMPLE.md to see how to set it up. -# Detect if user is using passkeys +## Detect if user is using passkeys + Once the backend is used, there will be a `passkey` key in request.session. If the user used a passkey then `request.session['passkey']['passkey']` will be True and the key information will be there like this ```python @@ -95,20 +108,33 @@ If the user didn't use a passkey then it will be set to False {'passkey':False} ``` - -# Check if the user can be enrolled for a platform authenticator +## Check if the user can be enrolled for a platform authenticator If you want to check if the user can be enrolled to use a platform authenticator, you can do the following in your main page. ```html - - + ``` check_passkey function paramters are as follows @@ -121,7 +147,7 @@ check_passkey function paramters are as follows Conditional UI is a way for the browser to prompt the user to use the passkey to login to the system as shown in -![conditionalUI.png](imgs%2FconditionalUI.png) +![conditionalUI.png](imgs/conditionalUI.png) Starting version v1.2. you can use Conditional UI by adding the following to your login page @@ -132,9 +158,9 @@ Starting version v1.2. you can use Conditional UI by adding the following to you add the following to the page js. ```js -window.onload = checkConditionalUI('loginForm'); +window.onload = DjangoPasskeys.checkConditionalUI('login-form'); ``` -where `loginForm` is name of your login form. +where `login-form` is id of your login form. ## Security contact information @@ -147,6 +173,9 @@ Tidelift will coordinate the fix and disclosure. * [jacopsd](https://github.com/jacopsd) * [gasparbrogueira](https://github.com/gasparbrogueira) * [pulse-mind](https://github.com/pulse-mind) +* [smark-1](https://github.com/smark-1) +* [rafaelurben](https://github.com/rafaelurben) + diff --git a/coverage.svg b/coverage.svg index e5db27c..6bfc8fa 100644 --- a/coverage.svg +++ b/coverage.svg @@ -15,7 +15,7 @@ coverage coverage - 100% - 100% + 99% + 99% diff --git a/example/static/js/sb-admin.js b/example/static/js/sb-admin.js deleted file mode 100644 index e1c3d87..0000000 --- a/example/static/js/sb-admin.js +++ /dev/null @@ -1,40 +0,0 @@ -(function($) { - "use strict"; // Start of use strict - - // Toggle the side navigation - $("#sidebarToggle").on('click', function(e) { - e.preventDefault(); - $("body").toggleClass("sidebar-toggled"); - $(".sidebar").toggleClass("toggled"); - }); - - // Prevent the content wrapper from scrolling when the fixed side navigation hovered over - $('body.fixed-nav .sidebar').on('mousewheel DOMMouseScroll wheel', function(e) { - if ($(window).width() > 768) { - var e0 = e.originalEvent, - delta = e0.wheelDelta || -e0.detail; - this.scrollTop += (delta < 0 ? 1 : -1) * 30; - e.preventDefault(); - } - }); - - // Scroll to top button appear - $(document).on('scroll', function() { - var scrollDistance = $(this).scrollTop(); - if (scrollDistance > 100) { - $('.scroll-to-top').fadeIn(); - } else { - $('.scroll-to-top').fadeOut(); - } - }); - - // Smooth scrolling using jQuery easing - $(document).on('click', 'a.scroll-to-top', function(event) { - var $anchor = $(this); - $('html, body').stop().animate({ - scrollTop: ($($anchor.attr('href')).offset().top) - }, 1000, 'easeInOutExpo'); - event.preventDefault(); - }); - -})(jQuery); // End of use strict diff --git a/example/static/js/sb-admin.min.js b/example/static/js/sb-admin.min.js deleted file mode 100644 index 5f93f8e..0000000 --- a/example/static/js/sb-admin.min.js +++ /dev/null @@ -1,7 +0,0 @@ -/*! - * Start Bootstrap - SB Admin v5.1.1 (https://startbootstrap.com/template-overviews/sb-admin) - * Copyright 2013-2019 Start Bootstrap - * Licensed under MIT (https://github.com/BlackrockDigital/startbootstrap-sb-admin/blob/master/LICENSE) - */ - -!function(l){"use strict";l("#sidebarToggle").on("click",function(o){o.preventDefault(),l("body").toggleClass("sidebar-toggled"),l(".sidebar").toggleClass("toggled")}),l("body.fixed-nav .sidebar").on("mousewheel DOMMouseScroll wheel",function(o){if(768 {\n called = true\n })\n\n setTimeout(() => {\n if (!called) {\n Util.triggerTransitionEnd(this)\n }\n }, duration)\n\n return this\n}\n\nfunction setTransitionEndSupport() {\n $.fn.emulateTransitionEnd = transitionEndEmulator\n $.event.special[Util.TRANSITION_END] = getSpecialTransitionEndEvent()\n}\n\n/**\n * --------------------------------------------------------------------------\n * Public Util Api\n * --------------------------------------------------------------------------\n */\n\nconst Util = {\n\n TRANSITION_END: 'bsTransitionEnd',\n\n getUID(prefix) {\n do {\n // eslint-disable-next-line no-bitwise\n prefix += ~~(Math.random() * MAX_UID) // \"~~\" acts like a faster Math.floor() here\n } while (document.getElementById(prefix))\n return prefix\n },\n\n getSelectorFromElement(element) {\n let selector = element.getAttribute('data-target')\n\n if (!selector || selector === '#') {\n const hrefAttr = element.getAttribute('href')\n selector = hrefAttr && hrefAttr !== '#' ? hrefAttr.trim() : ''\n }\n\n try {\n return document.querySelector(selector) ? selector : null\n } catch (err) {\n return null\n }\n },\n\n getTransitionDurationFromElement(element) {\n if (!element) {\n return 0\n }\n\n // Get transition-duration of the element\n let transitionDuration = $(element).css('transition-duration')\n let transitionDelay = $(element).css('transition-delay')\n\n const floatTransitionDuration = parseFloat(transitionDuration)\n const floatTransitionDelay = parseFloat(transitionDelay)\n\n // Return 0 if element or transition duration is not found\n if (!floatTransitionDuration && !floatTransitionDelay) {\n return 0\n }\n\n // If multiple durations are defined, take the first\n transitionDuration = transitionDuration.split(',')[0]\n transitionDelay = transitionDelay.split(',')[0]\n\n return (parseFloat(transitionDuration) + parseFloat(transitionDelay)) * MILLISECONDS_MULTIPLIER\n },\n\n reflow(element) {\n return element.offsetHeight\n },\n\n triggerTransitionEnd(element) {\n $(element).trigger(TRANSITION_END)\n },\n\n // TODO: Remove in v5\n supportsTransitionEnd() {\n return Boolean(TRANSITION_END)\n },\n\n isElement(obj) {\n return (obj[0] || obj).nodeType\n },\n\n typeCheckConfig(componentName, config, configTypes) {\n for (const property in configTypes) {\n if (Object.prototype.hasOwnProperty.call(configTypes, property)) {\n const expectedTypes = configTypes[property]\n const value = config[property]\n const valueType = value && Util.isElement(value)\n ? 'element' : toType(value)\n\n if (!new RegExp(expectedTypes).test(valueType)) {\n throw new Error(\n `${componentName.toUpperCase()}: ` +\n `Option \"${property}\" provided type \"${valueType}\" ` +\n `but expected type \"${expectedTypes}\".`)\n }\n }\n }\n },\n\n findShadowRoot(element) {\n if (!document.documentElement.attachShadow) {\n return null\n }\n\n // Can find the shadow root otherwise it'll return the document\n if (typeof element.getRootNode === 'function') {\n const root = element.getRootNode()\n return root instanceof ShadowRoot ? root : null\n }\n\n if (element instanceof ShadowRoot) {\n return element\n }\n\n // when we don't find a shadow root\n if (!element.parentNode) {\n return null\n }\n\n return Util.findShadowRoot(element.parentNode)\n }\n}\n\nsetTransitionEndSupport()\n\nexport default Util\n","/**\n * --------------------------------------------------------------------------\n * Bootstrap (v4.3.1): alert.js\n * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)\n * --------------------------------------------------------------------------\n */\n\nimport $ from 'jquery'\nimport Util from './util'\n\n/**\n * ------------------------------------------------------------------------\n * Constants\n * ------------------------------------------------------------------------\n */\n\nconst NAME = 'alert'\nconst VERSION = '4.3.1'\nconst DATA_KEY = 'bs.alert'\nconst EVENT_KEY = `.${DATA_KEY}`\nconst DATA_API_KEY = '.data-api'\nconst JQUERY_NO_CONFLICT = $.fn[NAME]\n\nconst Selector = {\n DISMISS : '[data-dismiss=\"alert\"]'\n}\n\nconst Event = {\n CLOSE : `close${EVENT_KEY}`,\n CLOSED : `closed${EVENT_KEY}`,\n CLICK_DATA_API : `click${EVENT_KEY}${DATA_API_KEY}`\n}\n\nconst ClassName = {\n ALERT : 'alert',\n FADE : 'fade',\n SHOW : 'show'\n}\n\n/**\n * ------------------------------------------------------------------------\n * Class Definition\n * ------------------------------------------------------------------------\n */\n\nclass Alert {\n constructor(element) {\n this._element = element\n }\n\n // Getters\n\n static get VERSION() {\n return VERSION\n }\n\n // Public\n\n close(element) {\n let rootElement = this._element\n if (element) {\n rootElement = this._getRootElement(element)\n }\n\n const customEvent = this._triggerCloseEvent(rootElement)\n\n if (customEvent.isDefaultPrevented()) {\n return\n }\n\n this._removeElement(rootElement)\n }\n\n dispose() {\n $.removeData(this._element, DATA_KEY)\n this._element = null\n }\n\n // Private\n\n _getRootElement(element) {\n const selector = Util.getSelectorFromElement(element)\n let parent = false\n\n if (selector) {\n parent = document.querySelector(selector)\n }\n\n if (!parent) {\n parent = $(element).closest(`.${ClassName.ALERT}`)[0]\n }\n\n return parent\n }\n\n _triggerCloseEvent(element) {\n const closeEvent = $.Event(Event.CLOSE)\n\n $(element).trigger(closeEvent)\n return closeEvent\n }\n\n _removeElement(element) {\n $(element).removeClass(ClassName.SHOW)\n\n if (!$(element).hasClass(ClassName.FADE)) {\n this._destroyElement(element)\n return\n }\n\n const transitionDuration = Util.getTransitionDurationFromElement(element)\n\n $(element)\n .one(Util.TRANSITION_END, (event) => this._destroyElement(element, event))\n .emulateTransitionEnd(transitionDuration)\n }\n\n _destroyElement(element) {\n $(element)\n .detach()\n .trigger(Event.CLOSED)\n .remove()\n }\n\n // Static\n\n static _jQueryInterface(config) {\n return this.each(function () {\n const $element = $(this)\n let data = $element.data(DATA_KEY)\n\n if (!data) {\n data = new Alert(this)\n $element.data(DATA_KEY, data)\n }\n\n if (config === 'close') {\n data[config](this)\n }\n })\n }\n\n static _handleDismiss(alertInstance) {\n return function (event) {\n if (event) {\n event.preventDefault()\n }\n\n alertInstance.close(this)\n }\n }\n}\n\n/**\n * ------------------------------------------------------------------------\n * Data Api implementation\n * ------------------------------------------------------------------------\n */\n\n$(document).on(\n Event.CLICK_DATA_API,\n Selector.DISMISS,\n Alert._handleDismiss(new Alert())\n)\n\n/**\n * ------------------------------------------------------------------------\n * jQuery\n * ------------------------------------------------------------------------\n */\n\n$.fn[NAME] = Alert._jQueryInterface\n$.fn[NAME].Constructor = Alert\n$.fn[NAME].noConflict = () => {\n $.fn[NAME] = JQUERY_NO_CONFLICT\n return Alert._jQueryInterface\n}\n\nexport default Alert\n","/**\n * --------------------------------------------------------------------------\n * Bootstrap (v4.3.1): button.js\n * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)\n * --------------------------------------------------------------------------\n */\n\nimport $ from 'jquery'\n\n/**\n * ------------------------------------------------------------------------\n * Constants\n * ------------------------------------------------------------------------\n */\n\nconst NAME = 'button'\nconst VERSION = '4.3.1'\nconst DATA_KEY = 'bs.button'\nconst EVENT_KEY = `.${DATA_KEY}`\nconst DATA_API_KEY = '.data-api'\nconst JQUERY_NO_CONFLICT = $.fn[NAME]\n\nconst ClassName = {\n ACTIVE : 'active',\n BUTTON : 'btn',\n FOCUS : 'focus'\n}\n\nconst Selector = {\n DATA_TOGGLE_CARROT : '[data-toggle^=\"button\"]',\n DATA_TOGGLE : '[data-toggle=\"buttons\"]',\n INPUT : 'input:not([type=\"hidden\"])',\n ACTIVE : '.active',\n BUTTON : '.btn'\n}\n\nconst Event = {\n CLICK_DATA_API : `click${EVENT_KEY}${DATA_API_KEY}`,\n FOCUS_BLUR_DATA_API : `focus${EVENT_KEY}${DATA_API_KEY} ` +\n `blur${EVENT_KEY}${DATA_API_KEY}`\n}\n\n/**\n * ------------------------------------------------------------------------\n * Class Definition\n * ------------------------------------------------------------------------\n */\n\nclass Button {\n constructor(element) {\n this._element = element\n }\n\n // Getters\n\n static get VERSION() {\n return VERSION\n }\n\n // Public\n\n toggle() {\n let triggerChangeEvent = true\n let addAriaPressed = true\n const rootElement = $(this._element).closest(\n Selector.DATA_TOGGLE\n )[0]\n\n if (rootElement) {\n const input = this._element.querySelector(Selector.INPUT)\n\n if (input) {\n if (input.type === 'radio') {\n if (input.checked &&\n this._element.classList.contains(ClassName.ACTIVE)) {\n triggerChangeEvent = false\n } else {\n const activeElement = rootElement.querySelector(Selector.ACTIVE)\n\n if (activeElement) {\n $(activeElement).removeClass(ClassName.ACTIVE)\n }\n }\n }\n\n if (triggerChangeEvent) {\n if (input.hasAttribute('disabled') ||\n rootElement.hasAttribute('disabled') ||\n input.classList.contains('disabled') ||\n rootElement.classList.contains('disabled')) {\n return\n }\n input.checked = !this._element.classList.contains(ClassName.ACTIVE)\n $(input).trigger('change')\n }\n\n input.focus()\n addAriaPressed = false\n }\n }\n\n if (addAriaPressed) {\n this._element.setAttribute('aria-pressed',\n !this._element.classList.contains(ClassName.ACTIVE))\n }\n\n if (triggerChangeEvent) {\n $(this._element).toggleClass(ClassName.ACTIVE)\n }\n }\n\n dispose() {\n $.removeData(this._element, DATA_KEY)\n this._element = null\n }\n\n // Static\n\n static _jQueryInterface(config) {\n return this.each(function () {\n let data = $(this).data(DATA_KEY)\n\n if (!data) {\n data = new Button(this)\n $(this).data(DATA_KEY, data)\n }\n\n if (config === 'toggle') {\n data[config]()\n }\n })\n }\n}\n\n/**\n * ------------------------------------------------------------------------\n * Data Api implementation\n * ------------------------------------------------------------------------\n */\n\n$(document)\n .on(Event.CLICK_DATA_API, Selector.DATA_TOGGLE_CARROT, (event) => {\n event.preventDefault()\n\n let button = event.target\n\n if (!$(button).hasClass(ClassName.BUTTON)) {\n button = $(button).closest(Selector.BUTTON)\n }\n\n Button._jQueryInterface.call($(button), 'toggle')\n })\n .on(Event.FOCUS_BLUR_DATA_API, Selector.DATA_TOGGLE_CARROT, (event) => {\n const button = $(event.target).closest(Selector.BUTTON)[0]\n $(button).toggleClass(ClassName.FOCUS, /^focus(in)?$/.test(event.type))\n })\n\n/**\n * ------------------------------------------------------------------------\n * jQuery\n * ------------------------------------------------------------------------\n */\n\n$.fn[NAME] = Button._jQueryInterface\n$.fn[NAME].Constructor = Button\n$.fn[NAME].noConflict = () => {\n $.fn[NAME] = JQUERY_NO_CONFLICT\n return Button._jQueryInterface\n}\n\nexport default Button\n","/**\n * --------------------------------------------------------------------------\n * Bootstrap (v4.3.1): carousel.js\n * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)\n * --------------------------------------------------------------------------\n */\n\nimport $ from 'jquery'\nimport Util from './util'\n\n/**\n * ------------------------------------------------------------------------\n * Constants\n * ------------------------------------------------------------------------\n */\n\nconst NAME = 'carousel'\nconst VERSION = '4.3.1'\nconst DATA_KEY = 'bs.carousel'\nconst EVENT_KEY = `.${DATA_KEY}`\nconst DATA_API_KEY = '.data-api'\nconst JQUERY_NO_CONFLICT = $.fn[NAME]\nconst ARROW_LEFT_KEYCODE = 37 // KeyboardEvent.which value for left arrow key\nconst ARROW_RIGHT_KEYCODE = 39 // KeyboardEvent.which value for right arrow key\nconst TOUCHEVENT_COMPAT_WAIT = 500 // Time for mouse compat events to fire after touch\nconst SWIPE_THRESHOLD = 40\n\nconst Default = {\n interval : 5000,\n keyboard : true,\n slide : false,\n pause : 'hover',\n wrap : true,\n touch : true\n}\n\nconst DefaultType = {\n interval : '(number|boolean)',\n keyboard : 'boolean',\n slide : '(boolean|string)',\n pause : '(string|boolean)',\n wrap : 'boolean',\n touch : 'boolean'\n}\n\nconst Direction = {\n NEXT : 'next',\n PREV : 'prev',\n LEFT : 'left',\n RIGHT : 'right'\n}\n\nconst Event = {\n SLIDE : `slide${EVENT_KEY}`,\n SLID : `slid${EVENT_KEY}`,\n KEYDOWN : `keydown${EVENT_KEY}`,\n MOUSEENTER : `mouseenter${EVENT_KEY}`,\n MOUSELEAVE : `mouseleave${EVENT_KEY}`,\n TOUCHSTART : `touchstart${EVENT_KEY}`,\n TOUCHMOVE : `touchmove${EVENT_KEY}`,\n TOUCHEND : `touchend${EVENT_KEY}`,\n POINTERDOWN : `pointerdown${EVENT_KEY}`,\n POINTERUP : `pointerup${EVENT_KEY}`,\n DRAG_START : `dragstart${EVENT_KEY}`,\n LOAD_DATA_API : `load${EVENT_KEY}${DATA_API_KEY}`,\n CLICK_DATA_API : `click${EVENT_KEY}${DATA_API_KEY}`\n}\n\nconst ClassName = {\n CAROUSEL : 'carousel',\n ACTIVE : 'active',\n SLIDE : 'slide',\n RIGHT : 'carousel-item-right',\n LEFT : 'carousel-item-left',\n NEXT : 'carousel-item-next',\n PREV : 'carousel-item-prev',\n ITEM : 'carousel-item',\n POINTER_EVENT : 'pointer-event'\n}\n\nconst Selector = {\n ACTIVE : '.active',\n ACTIVE_ITEM : '.active.carousel-item',\n ITEM : '.carousel-item',\n ITEM_IMG : '.carousel-item img',\n NEXT_PREV : '.carousel-item-next, .carousel-item-prev',\n INDICATORS : '.carousel-indicators',\n DATA_SLIDE : '[data-slide], [data-slide-to]',\n DATA_RIDE : '[data-ride=\"carousel\"]'\n}\n\nconst PointerType = {\n TOUCH : 'touch',\n PEN : 'pen'\n}\n\n/**\n * ------------------------------------------------------------------------\n * Class Definition\n * ------------------------------------------------------------------------\n */\nclass Carousel {\n constructor(element, config) {\n this._items = null\n this._interval = null\n this._activeElement = null\n this._isPaused = false\n this._isSliding = false\n this.touchTimeout = null\n this.touchStartX = 0\n this.touchDeltaX = 0\n\n this._config = this._getConfig(config)\n this._element = element\n this._indicatorsElement = this._element.querySelector(Selector.INDICATORS)\n this._touchSupported = 'ontouchstart' in document.documentElement || navigator.maxTouchPoints > 0\n this._pointerEvent = Boolean(window.PointerEvent || window.MSPointerEvent)\n\n this._addEventListeners()\n }\n\n // Getters\n\n static get VERSION() {\n return VERSION\n }\n\n static get Default() {\n return Default\n }\n\n // Public\n\n next() {\n if (!this._isSliding) {\n this._slide(Direction.NEXT)\n }\n }\n\n nextWhenVisible() {\n // Don't call next when the page isn't visible\n // or the carousel or its parent isn't visible\n if (!document.hidden &&\n ($(this._element).is(':visible') && $(this._element).css('visibility') !== 'hidden')) {\n this.next()\n }\n }\n\n prev() {\n if (!this._isSliding) {\n this._slide(Direction.PREV)\n }\n }\n\n pause(event) {\n if (!event) {\n this._isPaused = true\n }\n\n if (this._element.querySelector(Selector.NEXT_PREV)) {\n Util.triggerTransitionEnd(this._element)\n this.cycle(true)\n }\n\n clearInterval(this._interval)\n this._interval = null\n }\n\n cycle(event) {\n if (!event) {\n this._isPaused = false\n }\n\n if (this._interval) {\n clearInterval(this._interval)\n this._interval = null\n }\n\n if (this._config.interval && !this._isPaused) {\n this._interval = setInterval(\n (document.visibilityState ? this.nextWhenVisible : this.next).bind(this),\n this._config.interval\n )\n }\n }\n\n to(index) {\n this._activeElement = this._element.querySelector(Selector.ACTIVE_ITEM)\n\n const activeIndex = this._getItemIndex(this._activeElement)\n\n if (index > this._items.length - 1 || index < 0) {\n return\n }\n\n if (this._isSliding) {\n $(this._element).one(Event.SLID, () => this.to(index))\n return\n }\n\n if (activeIndex === index) {\n this.pause()\n this.cycle()\n return\n }\n\n const direction = index > activeIndex\n ? Direction.NEXT\n : Direction.PREV\n\n this._slide(direction, this._items[index])\n }\n\n dispose() {\n $(this._element).off(EVENT_KEY)\n $.removeData(this._element, DATA_KEY)\n\n this._items = null\n this._config = null\n this._element = null\n this._interval = null\n this._isPaused = null\n this._isSliding = null\n this._activeElement = null\n this._indicatorsElement = null\n }\n\n // Private\n\n _getConfig(config) {\n config = {\n ...Default,\n ...config\n }\n Util.typeCheckConfig(NAME, config, DefaultType)\n return config\n }\n\n _handleSwipe() {\n const absDeltax = Math.abs(this.touchDeltaX)\n\n if (absDeltax <= SWIPE_THRESHOLD) {\n return\n }\n\n const direction = absDeltax / this.touchDeltaX\n\n // swipe left\n if (direction > 0) {\n this.prev()\n }\n\n // swipe right\n if (direction < 0) {\n this.next()\n }\n }\n\n _addEventListeners() {\n if (this._config.keyboard) {\n $(this._element)\n .on(Event.KEYDOWN, (event) => this._keydown(event))\n }\n\n if (this._config.pause === 'hover') {\n $(this._element)\n .on(Event.MOUSEENTER, (event) => this.pause(event))\n .on(Event.MOUSELEAVE, (event) => this.cycle(event))\n }\n\n if (this._config.touch) {\n this._addTouchEventListeners()\n }\n }\n\n _addTouchEventListeners() {\n if (!this._touchSupported) {\n return\n }\n\n const start = (event) => {\n if (this._pointerEvent && PointerType[event.originalEvent.pointerType.toUpperCase()]) {\n this.touchStartX = event.originalEvent.clientX\n } else if (!this._pointerEvent) {\n this.touchStartX = event.originalEvent.touches[0].clientX\n }\n }\n\n const move = (event) => {\n // ensure swiping with one touch and not pinching\n if (event.originalEvent.touches && event.originalEvent.touches.length > 1) {\n this.touchDeltaX = 0\n } else {\n this.touchDeltaX = event.originalEvent.touches[0].clientX - this.touchStartX\n }\n }\n\n const end = (event) => {\n if (this._pointerEvent && PointerType[event.originalEvent.pointerType.toUpperCase()]) {\n this.touchDeltaX = event.originalEvent.clientX - this.touchStartX\n }\n\n this._handleSwipe()\n if (this._config.pause === 'hover') {\n // If it's a touch-enabled device, mouseenter/leave are fired as\n // part of the mouse compatibility events on first tap - the carousel\n // would stop cycling until user tapped out of it;\n // here, we listen for touchend, explicitly pause the carousel\n // (as if it's the second time we tap on it, mouseenter compat event\n // is NOT fired) and after a timeout (to allow for mouse compatibility\n // events to fire) we explicitly restart cycling\n\n this.pause()\n if (this.touchTimeout) {\n clearTimeout(this.touchTimeout)\n }\n this.touchTimeout = setTimeout((event) => this.cycle(event), TOUCHEVENT_COMPAT_WAIT + this._config.interval)\n }\n }\n\n $(this._element.querySelectorAll(Selector.ITEM_IMG)).on(Event.DRAG_START, (e) => e.preventDefault())\n if (this._pointerEvent) {\n $(this._element).on(Event.POINTERDOWN, (event) => start(event))\n $(this._element).on(Event.POINTERUP, (event) => end(event))\n\n this._element.classList.add(ClassName.POINTER_EVENT)\n } else {\n $(this._element).on(Event.TOUCHSTART, (event) => start(event))\n $(this._element).on(Event.TOUCHMOVE, (event) => move(event))\n $(this._element).on(Event.TOUCHEND, (event) => end(event))\n }\n }\n\n _keydown(event) {\n if (/input|textarea/i.test(event.target.tagName)) {\n return\n }\n\n switch (event.which) {\n case ARROW_LEFT_KEYCODE:\n event.preventDefault()\n this.prev()\n break\n case ARROW_RIGHT_KEYCODE:\n event.preventDefault()\n this.next()\n break\n default:\n }\n }\n\n _getItemIndex(element) {\n this._items = element && element.parentNode\n ? [].slice.call(element.parentNode.querySelectorAll(Selector.ITEM))\n : []\n return this._items.indexOf(element)\n }\n\n _getItemByDirection(direction, activeElement) {\n const isNextDirection = direction === Direction.NEXT\n const isPrevDirection = direction === Direction.PREV\n const activeIndex = this._getItemIndex(activeElement)\n const lastItemIndex = this._items.length - 1\n const isGoingToWrap = isPrevDirection && activeIndex === 0 ||\n isNextDirection && activeIndex === lastItemIndex\n\n if (isGoingToWrap && !this._config.wrap) {\n return activeElement\n }\n\n const delta = direction === Direction.PREV ? -1 : 1\n const itemIndex = (activeIndex + delta) % this._items.length\n\n return itemIndex === -1\n ? this._items[this._items.length - 1] : this._items[itemIndex]\n }\n\n _triggerSlideEvent(relatedTarget, eventDirectionName) {\n const targetIndex = this._getItemIndex(relatedTarget)\n const fromIndex = this._getItemIndex(this._element.querySelector(Selector.ACTIVE_ITEM))\n const slideEvent = $.Event(Event.SLIDE, {\n relatedTarget,\n direction: eventDirectionName,\n from: fromIndex,\n to: targetIndex\n })\n\n $(this._element).trigger(slideEvent)\n\n return slideEvent\n }\n\n _setActiveIndicatorElement(element) {\n if (this._indicatorsElement) {\n const indicators = [].slice.call(this._indicatorsElement.querySelectorAll(Selector.ACTIVE))\n $(indicators)\n .removeClass(ClassName.ACTIVE)\n\n const nextIndicator = this._indicatorsElement.children[\n this._getItemIndex(element)\n ]\n\n if (nextIndicator) {\n $(nextIndicator).addClass(ClassName.ACTIVE)\n }\n }\n }\n\n _slide(direction, element) {\n const activeElement = this._element.querySelector(Selector.ACTIVE_ITEM)\n const activeElementIndex = this._getItemIndex(activeElement)\n const nextElement = element || activeElement &&\n this._getItemByDirection(direction, activeElement)\n const nextElementIndex = this._getItemIndex(nextElement)\n const isCycling = Boolean(this._interval)\n\n let directionalClassName\n let orderClassName\n let eventDirectionName\n\n if (direction === Direction.NEXT) {\n directionalClassName = ClassName.LEFT\n orderClassName = ClassName.NEXT\n eventDirectionName = Direction.LEFT\n } else {\n directionalClassName = ClassName.RIGHT\n orderClassName = ClassName.PREV\n eventDirectionName = Direction.RIGHT\n }\n\n if (nextElement && $(nextElement).hasClass(ClassName.ACTIVE)) {\n this._isSliding = false\n return\n }\n\n const slideEvent = this._triggerSlideEvent(nextElement, eventDirectionName)\n if (slideEvent.isDefaultPrevented()) {\n return\n }\n\n if (!activeElement || !nextElement) {\n // Some weirdness is happening, so we bail\n return\n }\n\n this._isSliding = true\n\n if (isCycling) {\n this.pause()\n }\n\n this._setActiveIndicatorElement(nextElement)\n\n const slidEvent = $.Event(Event.SLID, {\n relatedTarget: nextElement,\n direction: eventDirectionName,\n from: activeElementIndex,\n to: nextElementIndex\n })\n\n if ($(this._element).hasClass(ClassName.SLIDE)) {\n $(nextElement).addClass(orderClassName)\n\n Util.reflow(nextElement)\n\n $(activeElement).addClass(directionalClassName)\n $(nextElement).addClass(directionalClassName)\n\n const nextElementInterval = parseInt(nextElement.getAttribute('data-interval'), 10)\n if (nextElementInterval) {\n this._config.defaultInterval = this._config.defaultInterval || this._config.interval\n this._config.interval = nextElementInterval\n } else {\n this._config.interval = this._config.defaultInterval || this._config.interval\n }\n\n const transitionDuration = Util.getTransitionDurationFromElement(activeElement)\n\n $(activeElement)\n .one(Util.TRANSITION_END, () => {\n $(nextElement)\n .removeClass(`${directionalClassName} ${orderClassName}`)\n .addClass(ClassName.ACTIVE)\n\n $(activeElement).removeClass(`${ClassName.ACTIVE} ${orderClassName} ${directionalClassName}`)\n\n this._isSliding = false\n\n setTimeout(() => $(this._element).trigger(slidEvent), 0)\n })\n .emulateTransitionEnd(transitionDuration)\n } else {\n $(activeElement).removeClass(ClassName.ACTIVE)\n $(nextElement).addClass(ClassName.ACTIVE)\n\n this._isSliding = false\n $(this._element).trigger(slidEvent)\n }\n\n if (isCycling) {\n this.cycle()\n }\n }\n\n // Static\n\n static _jQueryInterface(config) {\n return this.each(function () {\n let data = $(this).data(DATA_KEY)\n let _config = {\n ...Default,\n ...$(this).data()\n }\n\n if (typeof config === 'object') {\n _config = {\n ..._config,\n ...config\n }\n }\n\n const action = typeof config === 'string' ? config : _config.slide\n\n if (!data) {\n data = new Carousel(this, _config)\n $(this).data(DATA_KEY, data)\n }\n\n if (typeof config === 'number') {\n data.to(config)\n } else if (typeof action === 'string') {\n if (typeof data[action] === 'undefined') {\n throw new TypeError(`No method named \"${action}\"`)\n }\n data[action]()\n } else if (_config.interval && _config.ride) {\n data.pause()\n data.cycle()\n }\n })\n }\n\n static _dataApiClickHandler(event) {\n const selector = Util.getSelectorFromElement(this)\n\n if (!selector) {\n return\n }\n\n const target = $(selector)[0]\n\n if (!target || !$(target).hasClass(ClassName.CAROUSEL)) {\n return\n }\n\n const config = {\n ...$(target).data(),\n ...$(this).data()\n }\n const slideIndex = this.getAttribute('data-slide-to')\n\n if (slideIndex) {\n config.interval = false\n }\n\n Carousel._jQueryInterface.call($(target), config)\n\n if (slideIndex) {\n $(target).data(DATA_KEY).to(slideIndex)\n }\n\n event.preventDefault()\n }\n}\n\n/**\n * ------------------------------------------------------------------------\n * Data Api implementation\n * ------------------------------------------------------------------------\n */\n\n$(document)\n .on(Event.CLICK_DATA_API, Selector.DATA_SLIDE, Carousel._dataApiClickHandler)\n\n$(window).on(Event.LOAD_DATA_API, () => {\n const carousels = [].slice.call(document.querySelectorAll(Selector.DATA_RIDE))\n for (let i = 0, len = carousels.length; i < len; i++) {\n const $carousel = $(carousels[i])\n Carousel._jQueryInterface.call($carousel, $carousel.data())\n }\n})\n\n/**\n * ------------------------------------------------------------------------\n * jQuery\n * ------------------------------------------------------------------------\n */\n\n$.fn[NAME] = Carousel._jQueryInterface\n$.fn[NAME].Constructor = Carousel\n$.fn[NAME].noConflict = () => {\n $.fn[NAME] = JQUERY_NO_CONFLICT\n return Carousel._jQueryInterface\n}\n\nexport default Carousel\n","/**\n * --------------------------------------------------------------------------\n * Bootstrap (v4.3.1): collapse.js\n * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)\n * --------------------------------------------------------------------------\n */\n\nimport $ from 'jquery'\nimport Util from './util'\n\n/**\n * ------------------------------------------------------------------------\n * Constants\n * ------------------------------------------------------------------------\n */\n\nconst NAME = 'collapse'\nconst VERSION = '4.3.1'\nconst DATA_KEY = 'bs.collapse'\nconst EVENT_KEY = `.${DATA_KEY}`\nconst DATA_API_KEY = '.data-api'\nconst JQUERY_NO_CONFLICT = $.fn[NAME]\n\nconst Default = {\n toggle : true,\n parent : ''\n}\n\nconst DefaultType = {\n toggle : 'boolean',\n parent : '(string|element)'\n}\n\nconst Event = {\n SHOW : `show${EVENT_KEY}`,\n SHOWN : `shown${EVENT_KEY}`,\n HIDE : `hide${EVENT_KEY}`,\n HIDDEN : `hidden${EVENT_KEY}`,\n CLICK_DATA_API : `click${EVENT_KEY}${DATA_API_KEY}`\n}\n\nconst ClassName = {\n SHOW : 'show',\n COLLAPSE : 'collapse',\n COLLAPSING : 'collapsing',\n COLLAPSED : 'collapsed'\n}\n\nconst Dimension = {\n WIDTH : 'width',\n HEIGHT : 'height'\n}\n\nconst Selector = {\n ACTIVES : '.show, .collapsing',\n DATA_TOGGLE : '[data-toggle=\"collapse\"]'\n}\n\n/**\n * ------------------------------------------------------------------------\n * Class Definition\n * ------------------------------------------------------------------------\n */\n\nclass Collapse {\n constructor(element, config) {\n this._isTransitioning = false\n this._element = element\n this._config = this._getConfig(config)\n this._triggerArray = [].slice.call(document.querySelectorAll(\n `[data-toggle=\"collapse\"][href=\"#${element.id}\"],` +\n `[data-toggle=\"collapse\"][data-target=\"#${element.id}\"]`\n ))\n\n const toggleList = [].slice.call(document.querySelectorAll(Selector.DATA_TOGGLE))\n for (let i = 0, len = toggleList.length; i < len; i++) {\n const elem = toggleList[i]\n const selector = Util.getSelectorFromElement(elem)\n const filterElement = [].slice.call(document.querySelectorAll(selector))\n .filter((foundElem) => foundElem === element)\n\n if (selector !== null && filterElement.length > 0) {\n this._selector = selector\n this._triggerArray.push(elem)\n }\n }\n\n this._parent = this._config.parent ? this._getParent() : null\n\n if (!this._config.parent) {\n this._addAriaAndCollapsedClass(this._element, this._triggerArray)\n }\n\n if (this._config.toggle) {\n this.toggle()\n }\n }\n\n // Getters\n\n static get VERSION() {\n return VERSION\n }\n\n static get Default() {\n return Default\n }\n\n // Public\n\n toggle() {\n if ($(this._element).hasClass(ClassName.SHOW)) {\n this.hide()\n } else {\n this.show()\n }\n }\n\n show() {\n if (this._isTransitioning ||\n $(this._element).hasClass(ClassName.SHOW)) {\n return\n }\n\n let actives\n let activesData\n\n if (this._parent) {\n actives = [].slice.call(this._parent.querySelectorAll(Selector.ACTIVES))\n .filter((elem) => {\n if (typeof this._config.parent === 'string') {\n return elem.getAttribute('data-parent') === this._config.parent\n }\n\n return elem.classList.contains(ClassName.COLLAPSE)\n })\n\n if (actives.length === 0) {\n actives = null\n }\n }\n\n if (actives) {\n activesData = $(actives).not(this._selector).data(DATA_KEY)\n if (activesData && activesData._isTransitioning) {\n return\n }\n }\n\n const startEvent = $.Event(Event.SHOW)\n $(this._element).trigger(startEvent)\n if (startEvent.isDefaultPrevented()) {\n return\n }\n\n if (actives) {\n Collapse._jQueryInterface.call($(actives).not(this._selector), 'hide')\n if (!activesData) {\n $(actives).data(DATA_KEY, null)\n }\n }\n\n const dimension = this._getDimension()\n\n $(this._element)\n .removeClass(ClassName.COLLAPSE)\n .addClass(ClassName.COLLAPSING)\n\n this._element.style[dimension] = 0\n\n if (this._triggerArray.length) {\n $(this._triggerArray)\n .removeClass(ClassName.COLLAPSED)\n .attr('aria-expanded', true)\n }\n\n this.setTransitioning(true)\n\n const complete = () => {\n $(this._element)\n .removeClass(ClassName.COLLAPSING)\n .addClass(ClassName.COLLAPSE)\n .addClass(ClassName.SHOW)\n\n this._element.style[dimension] = ''\n\n this.setTransitioning(false)\n\n $(this._element).trigger(Event.SHOWN)\n }\n\n const capitalizedDimension = dimension[0].toUpperCase() + dimension.slice(1)\n const scrollSize = `scroll${capitalizedDimension}`\n const transitionDuration = Util.getTransitionDurationFromElement(this._element)\n\n $(this._element)\n .one(Util.TRANSITION_END, complete)\n .emulateTransitionEnd(transitionDuration)\n\n this._element.style[dimension] = `${this._element[scrollSize]}px`\n }\n\n hide() {\n if (this._isTransitioning ||\n !$(this._element).hasClass(ClassName.SHOW)) {\n return\n }\n\n const startEvent = $.Event(Event.HIDE)\n $(this._element).trigger(startEvent)\n if (startEvent.isDefaultPrevented()) {\n return\n }\n\n const dimension = this._getDimension()\n\n this._element.style[dimension] = `${this._element.getBoundingClientRect()[dimension]}px`\n\n Util.reflow(this._element)\n\n $(this._element)\n .addClass(ClassName.COLLAPSING)\n .removeClass(ClassName.COLLAPSE)\n .removeClass(ClassName.SHOW)\n\n const triggerArrayLength = this._triggerArray.length\n if (triggerArrayLength > 0) {\n for (let i = 0; i < triggerArrayLength; i++) {\n const trigger = this._triggerArray[i]\n const selector = Util.getSelectorFromElement(trigger)\n\n if (selector !== null) {\n const $elem = $([].slice.call(document.querySelectorAll(selector)))\n if (!$elem.hasClass(ClassName.SHOW)) {\n $(trigger).addClass(ClassName.COLLAPSED)\n .attr('aria-expanded', false)\n }\n }\n }\n }\n\n this.setTransitioning(true)\n\n const complete = () => {\n this.setTransitioning(false)\n $(this._element)\n .removeClass(ClassName.COLLAPSING)\n .addClass(ClassName.COLLAPSE)\n .trigger(Event.HIDDEN)\n }\n\n this._element.style[dimension] = ''\n const transitionDuration = Util.getTransitionDurationFromElement(this._element)\n\n $(this._element)\n .one(Util.TRANSITION_END, complete)\n .emulateTransitionEnd(transitionDuration)\n }\n\n setTransitioning(isTransitioning) {\n this._isTransitioning = isTransitioning\n }\n\n dispose() {\n $.removeData(this._element, DATA_KEY)\n\n this._config = null\n this._parent = null\n this._element = null\n this._triggerArray = null\n this._isTransitioning = null\n }\n\n // Private\n\n _getConfig(config) {\n config = {\n ...Default,\n ...config\n }\n config.toggle = Boolean(config.toggle) // Coerce string values\n Util.typeCheckConfig(NAME, config, DefaultType)\n return config\n }\n\n _getDimension() {\n const hasWidth = $(this._element).hasClass(Dimension.WIDTH)\n return hasWidth ? Dimension.WIDTH : Dimension.HEIGHT\n }\n\n _getParent() {\n let parent\n\n if (Util.isElement(this._config.parent)) {\n parent = this._config.parent\n\n // It's a jQuery object\n if (typeof this._config.parent.jquery !== 'undefined') {\n parent = this._config.parent[0]\n }\n } else {\n parent = document.querySelector(this._config.parent)\n }\n\n const selector =\n `[data-toggle=\"collapse\"][data-parent=\"${this._config.parent}\"]`\n\n const children = [].slice.call(parent.querySelectorAll(selector))\n $(children).each((i, element) => {\n this._addAriaAndCollapsedClass(\n Collapse._getTargetFromElement(element),\n [element]\n )\n })\n\n return parent\n }\n\n _addAriaAndCollapsedClass(element, triggerArray) {\n const isOpen = $(element).hasClass(ClassName.SHOW)\n\n if (triggerArray.length) {\n $(triggerArray)\n .toggleClass(ClassName.COLLAPSED, !isOpen)\n .attr('aria-expanded', isOpen)\n }\n }\n\n // Static\n\n static _getTargetFromElement(element) {\n const selector = Util.getSelectorFromElement(element)\n return selector ? document.querySelector(selector) : null\n }\n\n static _jQueryInterface(config) {\n return this.each(function () {\n const $this = $(this)\n let data = $this.data(DATA_KEY)\n const _config = {\n ...Default,\n ...$this.data(),\n ...typeof config === 'object' && config ? config : {}\n }\n\n if (!data && _config.toggle && /show|hide/.test(config)) {\n _config.toggle = false\n }\n\n if (!data) {\n data = new Collapse(this, _config)\n $this.data(DATA_KEY, data)\n }\n\n if (typeof config === 'string') {\n if (typeof data[config] === 'undefined') {\n throw new TypeError(`No method named \"${config}\"`)\n }\n data[config]()\n }\n })\n }\n}\n\n/**\n * ------------------------------------------------------------------------\n * Data Api implementation\n * ------------------------------------------------------------------------\n */\n\n$(document).on(Event.CLICK_DATA_API, Selector.DATA_TOGGLE, function (event) {\n // preventDefault only for elements (which change the URL) not inside the collapsible element\n if (event.currentTarget.tagName === 'A') {\n event.preventDefault()\n }\n\n const $trigger = $(this)\n const selector = Util.getSelectorFromElement(this)\n const selectors = [].slice.call(document.querySelectorAll(selector))\n\n $(selectors).each(function () {\n const $target = $(this)\n const data = $target.data(DATA_KEY)\n const config = data ? 'toggle' : $trigger.data()\n Collapse._jQueryInterface.call($target, config)\n })\n})\n\n/**\n * ------------------------------------------------------------------------\n * jQuery\n * ------------------------------------------------------------------------\n */\n\n$.fn[NAME] = Collapse._jQueryInterface\n$.fn[NAME].Constructor = Collapse\n$.fn[NAME].noConflict = () => {\n $.fn[NAME] = JQUERY_NO_CONFLICT\n return Collapse._jQueryInterface\n}\n\nexport default Collapse\n","/**!\n * @fileOverview Kickass library to create and place poppers near their reference elements.\n * @version 1.14.7\n * @license\n * Copyright (c) 2016 Federico Zivolo and contributors\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in all\n * copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE\n * SOFTWARE.\n */\nvar isBrowser = typeof window !== 'undefined' && typeof document !== 'undefined';\n\nvar longerTimeoutBrowsers = ['Edge', 'Trident', 'Firefox'];\nvar timeoutDuration = 0;\nfor (var i = 0; i < longerTimeoutBrowsers.length; i += 1) {\n if (isBrowser && navigator.userAgent.indexOf(longerTimeoutBrowsers[i]) >= 0) {\n timeoutDuration = 1;\n break;\n }\n}\n\nfunction microtaskDebounce(fn) {\n var called = false;\n return function () {\n if (called) {\n return;\n }\n called = true;\n window.Promise.resolve().then(function () {\n called = false;\n fn();\n });\n };\n}\n\nfunction taskDebounce(fn) {\n var scheduled = false;\n return function () {\n if (!scheduled) {\n scheduled = true;\n setTimeout(function () {\n scheduled = false;\n fn();\n }, timeoutDuration);\n }\n };\n}\n\nvar supportsMicroTasks = isBrowser && window.Promise;\n\n/**\n* Create a debounced version of a method, that's asynchronously deferred\n* but called in the minimum time possible.\n*\n* @method\n* @memberof Popper.Utils\n* @argument {Function} fn\n* @returns {Function}\n*/\nvar debounce = supportsMicroTasks ? microtaskDebounce : taskDebounce;\n\n/**\n * Check if the given variable is a function\n * @method\n * @memberof Popper.Utils\n * @argument {Any} functionToCheck - variable to check\n * @returns {Boolean} answer to: is a function?\n */\nfunction isFunction(functionToCheck) {\n var getType = {};\n return functionToCheck && getType.toString.call(functionToCheck) === '[object Function]';\n}\n\n/**\n * Get CSS computed property of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Eement} element\n * @argument {String} property\n */\nfunction getStyleComputedProperty(element, property) {\n if (element.nodeType !== 1) {\n return [];\n }\n // NOTE: 1 DOM access here\n var window = element.ownerDocument.defaultView;\n var css = window.getComputedStyle(element, null);\n return property ? css[property] : css;\n}\n\n/**\n * Returns the parentNode or the host of the element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} parent\n */\nfunction getParentNode(element) {\n if (element.nodeName === 'HTML') {\n return element;\n }\n return element.parentNode || element.host;\n}\n\n/**\n * Returns the scrolling parent of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} scroll parent\n */\nfunction getScrollParent(element) {\n // Return body, `getScroll` will take care to get the correct `scrollTop` from it\n if (!element) {\n return document.body;\n }\n\n switch (element.nodeName) {\n case 'HTML':\n case 'BODY':\n return element.ownerDocument.body;\n case '#document':\n return element.body;\n }\n\n // Firefox want us to check `-x` and `-y` variations as well\n\n var _getStyleComputedProp = getStyleComputedProperty(element),\n overflow = _getStyleComputedProp.overflow,\n overflowX = _getStyleComputedProp.overflowX,\n overflowY = _getStyleComputedProp.overflowY;\n\n if (/(auto|scroll|overlay)/.test(overflow + overflowY + overflowX)) {\n return element;\n }\n\n return getScrollParent(getParentNode(element));\n}\n\nvar isIE11 = isBrowser && !!(window.MSInputMethodContext && document.documentMode);\nvar isIE10 = isBrowser && /MSIE 10/.test(navigator.userAgent);\n\n/**\n * Determines if the browser is Internet Explorer\n * @method\n * @memberof Popper.Utils\n * @param {Number} version to check\n * @returns {Boolean} isIE\n */\nfunction isIE(version) {\n if (version === 11) {\n return isIE11;\n }\n if (version === 10) {\n return isIE10;\n }\n return isIE11 || isIE10;\n}\n\n/**\n * Returns the offset parent of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} offset parent\n */\nfunction getOffsetParent(element) {\n if (!element) {\n return document.documentElement;\n }\n\n var noOffsetParent = isIE(10) ? document.body : null;\n\n // NOTE: 1 DOM access here\n var offsetParent = element.offsetParent || null;\n // Skip hidden elements which don't have an offsetParent\n while (offsetParent === noOffsetParent && element.nextElementSibling) {\n offsetParent = (element = element.nextElementSibling).offsetParent;\n }\n\n var nodeName = offsetParent && offsetParent.nodeName;\n\n if (!nodeName || nodeName === 'BODY' || nodeName === 'HTML') {\n return element ? element.ownerDocument.documentElement : document.documentElement;\n }\n\n // .offsetParent will return the closest TH, TD or TABLE in case\n // no offsetParent is present, I hate this job...\n if (['TH', 'TD', 'TABLE'].indexOf(offsetParent.nodeName) !== -1 && getStyleComputedProperty(offsetParent, 'position') === 'static') {\n return getOffsetParent(offsetParent);\n }\n\n return offsetParent;\n}\n\nfunction isOffsetContainer(element) {\n var nodeName = element.nodeName;\n\n if (nodeName === 'BODY') {\n return false;\n }\n return nodeName === 'HTML' || getOffsetParent(element.firstElementChild) === element;\n}\n\n/**\n * Finds the root node (document, shadowDOM root) of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} node\n * @returns {Element} root node\n */\nfunction getRoot(node) {\n if (node.parentNode !== null) {\n return getRoot(node.parentNode);\n }\n\n return node;\n}\n\n/**\n * Finds the offset parent common to the two provided nodes\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element1\n * @argument {Element} element2\n * @returns {Element} common offset parent\n */\nfunction findCommonOffsetParent(element1, element2) {\n // This check is needed to avoid errors in case one of the elements isn't defined for any reason\n if (!element1 || !element1.nodeType || !element2 || !element2.nodeType) {\n return document.documentElement;\n }\n\n // Here we make sure to give as \"start\" the element that comes first in the DOM\n var order = element1.compareDocumentPosition(element2) & Node.DOCUMENT_POSITION_FOLLOWING;\n var start = order ? element1 : element2;\n var end = order ? element2 : element1;\n\n // Get common ancestor container\n var range = document.createRange();\n range.setStart(start, 0);\n range.setEnd(end, 0);\n var commonAncestorContainer = range.commonAncestorContainer;\n\n // Both nodes are inside #document\n\n if (element1 !== commonAncestorContainer && element2 !== commonAncestorContainer || start.contains(end)) {\n if (isOffsetContainer(commonAncestorContainer)) {\n return commonAncestorContainer;\n }\n\n return getOffsetParent(commonAncestorContainer);\n }\n\n // one of the nodes is inside shadowDOM, find which one\n var element1root = getRoot(element1);\n if (element1root.host) {\n return findCommonOffsetParent(element1root.host, element2);\n } else {\n return findCommonOffsetParent(element1, getRoot(element2).host);\n }\n}\n\n/**\n * Gets the scroll value of the given element in the given side (top and left)\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @argument {String} side `top` or `left`\n * @returns {number} amount of scrolled pixels\n */\nfunction getScroll(element) {\n var side = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 'top';\n\n var upperSide = side === 'top' ? 'scrollTop' : 'scrollLeft';\n var nodeName = element.nodeName;\n\n if (nodeName === 'BODY' || nodeName === 'HTML') {\n var html = element.ownerDocument.documentElement;\n var scrollingElement = element.ownerDocument.scrollingElement || html;\n return scrollingElement[upperSide];\n }\n\n return element[upperSide];\n}\n\n/*\n * Sum or subtract the element scroll values (left and top) from a given rect object\n * @method\n * @memberof Popper.Utils\n * @param {Object} rect - Rect object you want to change\n * @param {HTMLElement} element - The element from the function reads the scroll values\n * @param {Boolean} subtract - set to true if you want to subtract the scroll values\n * @return {Object} rect - The modifier rect object\n */\nfunction includeScroll(rect, element) {\n var subtract = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;\n\n var scrollTop = getScroll(element, 'top');\n var scrollLeft = getScroll(element, 'left');\n var modifier = subtract ? -1 : 1;\n rect.top += scrollTop * modifier;\n rect.bottom += scrollTop * modifier;\n rect.left += scrollLeft * modifier;\n rect.right += scrollLeft * modifier;\n return rect;\n}\n\n/*\n * Helper to detect borders of a given element\n * @method\n * @memberof Popper.Utils\n * @param {CSSStyleDeclaration} styles\n * Result of `getStyleComputedProperty` on the given element\n * @param {String} axis - `x` or `y`\n * @return {number} borders - The borders size of the given axis\n */\n\nfunction getBordersSize(styles, axis) {\n var sideA = axis === 'x' ? 'Left' : 'Top';\n var sideB = sideA === 'Left' ? 'Right' : 'Bottom';\n\n return parseFloat(styles['border' + sideA + 'Width'], 10) + parseFloat(styles['border' + sideB + 'Width'], 10);\n}\n\nfunction getSize(axis, body, html, computedStyle) {\n 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);\n}\n\nfunction getWindowSizes(document) {\n var body = document.body;\n var html = document.documentElement;\n var computedStyle = isIE(10) && getComputedStyle(html);\n\n return {\n height: getSize('Height', body, html, computedStyle),\n width: getSize('Width', body, html, computedStyle)\n };\n}\n\nvar classCallCheck = function (instance, Constructor) {\n if (!(instance instanceof Constructor)) {\n throw new TypeError(\"Cannot call a class as a function\");\n }\n};\n\nvar createClass = function () {\n function defineProperties(target, props) {\n for (var i = 0; i < props.length; i++) {\n var descriptor = props[i];\n descriptor.enumerable = descriptor.enumerable || false;\n descriptor.configurable = true;\n if (\"value\" in descriptor) descriptor.writable = true;\n Object.defineProperty(target, descriptor.key, descriptor);\n }\n }\n\n return function (Constructor, protoProps, staticProps) {\n if (protoProps) defineProperties(Constructor.prototype, protoProps);\n if (staticProps) defineProperties(Constructor, staticProps);\n return Constructor;\n };\n}();\n\n\n\n\n\nvar defineProperty = function (obj, key, value) {\n if (key in obj) {\n Object.defineProperty(obj, key, {\n value: value,\n enumerable: true,\n configurable: true,\n writable: true\n });\n } else {\n obj[key] = value;\n }\n\n return obj;\n};\n\nvar _extends = Object.assign || function (target) {\n for (var i = 1; i < arguments.length; i++) {\n var source = arguments[i];\n\n for (var key in source) {\n if (Object.prototype.hasOwnProperty.call(source, key)) {\n target[key] = source[key];\n }\n }\n }\n\n return target;\n};\n\n/**\n * Given element offsets, generate an output similar to getBoundingClientRect\n * @method\n * @memberof Popper.Utils\n * @argument {Object} offsets\n * @returns {Object} ClientRect like output\n */\nfunction getClientRect(offsets) {\n return _extends({}, offsets, {\n right: offsets.left + offsets.width,\n bottom: offsets.top + offsets.height\n });\n}\n\n/**\n * Get bounding client rect of given element\n * @method\n * @memberof Popper.Utils\n * @param {HTMLElement} element\n * @return {Object} client rect\n */\nfunction getBoundingClientRect(element) {\n var rect = {};\n\n // IE10 10 FIX: Please, don't ask, the element isn't\n // considered in DOM in some circumstances...\n // This isn't reproducible in IE10 compatibility mode of IE11\n try {\n if (isIE(10)) {\n rect = element.getBoundingClientRect();\n var scrollTop = getScroll(element, 'top');\n var scrollLeft = getScroll(element, 'left');\n rect.top += scrollTop;\n rect.left += scrollLeft;\n rect.bottom += scrollTop;\n rect.right += scrollLeft;\n } else {\n rect = element.getBoundingClientRect();\n }\n } catch (e) {}\n\n var result = {\n left: rect.left,\n top: rect.top,\n width: rect.right - rect.left,\n height: rect.bottom - rect.top\n };\n\n // subtract scrollbar size from sizes\n var sizes = element.nodeName === 'HTML' ? getWindowSizes(element.ownerDocument) : {};\n var width = sizes.width || element.clientWidth || result.right - result.left;\n var height = sizes.height || element.clientHeight || result.bottom - result.top;\n\n var horizScrollbar = element.offsetWidth - width;\n var vertScrollbar = element.offsetHeight - height;\n\n // if an hypothetical scrollbar is detected, we must be sure it's not a `border`\n // we make this check conditional for performance reasons\n if (horizScrollbar || vertScrollbar) {\n var styles = getStyleComputedProperty(element);\n horizScrollbar -= getBordersSize(styles, 'x');\n vertScrollbar -= getBordersSize(styles, 'y');\n\n result.width -= horizScrollbar;\n result.height -= vertScrollbar;\n }\n\n return getClientRect(result);\n}\n\nfunction getOffsetRectRelativeToArbitraryNode(children, parent) {\n var fixedPosition = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;\n\n var isIE10 = isIE(10);\n var isHTML = parent.nodeName === 'HTML';\n var childrenRect = getBoundingClientRect(children);\n var parentRect = getBoundingClientRect(parent);\n var scrollParent = getScrollParent(children);\n\n var styles = getStyleComputedProperty(parent);\n var borderTopWidth = parseFloat(styles.borderTopWidth, 10);\n var borderLeftWidth = parseFloat(styles.borderLeftWidth, 10);\n\n // In cases where the parent is fixed, we must ignore negative scroll in offset calc\n if (fixedPosition && isHTML) {\n parentRect.top = Math.max(parentRect.top, 0);\n parentRect.left = Math.max(parentRect.left, 0);\n }\n var offsets = getClientRect({\n top: childrenRect.top - parentRect.top - borderTopWidth,\n left: childrenRect.left - parentRect.left - borderLeftWidth,\n width: childrenRect.width,\n height: childrenRect.height\n });\n offsets.marginTop = 0;\n offsets.marginLeft = 0;\n\n // Subtract margins of documentElement in case it's being used as parent\n // we do this only on HTML because it's the only element that behaves\n // differently when margins are applied to it. The margins are included in\n // the box of the documentElement, in the other cases not.\n if (!isIE10 && isHTML) {\n var marginTop = parseFloat(styles.marginTop, 10);\n var marginLeft = parseFloat(styles.marginLeft, 10);\n\n offsets.top -= borderTopWidth - marginTop;\n offsets.bottom -= borderTopWidth - marginTop;\n offsets.left -= borderLeftWidth - marginLeft;\n offsets.right -= borderLeftWidth - marginLeft;\n\n // Attach marginTop and marginLeft because in some circumstances we may need them\n offsets.marginTop = marginTop;\n offsets.marginLeft = marginLeft;\n }\n\n if (isIE10 && !fixedPosition ? parent.contains(scrollParent) : parent === scrollParent && scrollParent.nodeName !== 'BODY') {\n offsets = includeScroll(offsets, parent);\n }\n\n return offsets;\n}\n\nfunction getViewportOffsetRectRelativeToArtbitraryNode(element) {\n var excludeScroll = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;\n\n var html = element.ownerDocument.documentElement;\n var relativeOffset = getOffsetRectRelativeToArbitraryNode(element, html);\n var width = Math.max(html.clientWidth, window.innerWidth || 0);\n var height = Math.max(html.clientHeight, window.innerHeight || 0);\n\n var scrollTop = !excludeScroll ? getScroll(html) : 0;\n var scrollLeft = !excludeScroll ? getScroll(html, 'left') : 0;\n\n var offset = {\n top: scrollTop - relativeOffset.top + relativeOffset.marginTop,\n left: scrollLeft - relativeOffset.left + relativeOffset.marginLeft,\n width: width,\n height: height\n };\n\n return getClientRect(offset);\n}\n\n/**\n * Check if the given element is fixed or is inside a fixed parent\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @argument {Element} customContainer\n * @returns {Boolean} answer to \"isFixed?\"\n */\nfunction isFixed(element) {\n var nodeName = element.nodeName;\n if (nodeName === 'BODY' || nodeName === 'HTML') {\n return false;\n }\n if (getStyleComputedProperty(element, 'position') === 'fixed') {\n return true;\n }\n var parentNode = getParentNode(element);\n if (!parentNode) {\n return false;\n }\n return isFixed(parentNode);\n}\n\n/**\n * Finds the first parent of an element that has a transformed property defined\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} first transformed parent or documentElement\n */\n\nfunction getFixedPositionOffsetParent(element) {\n // This check is needed to avoid errors in case one of the elements isn't defined for any reason\n if (!element || !element.parentElement || isIE()) {\n return document.documentElement;\n }\n var el = element.parentElement;\n while (el && getStyleComputedProperty(el, 'transform') === 'none') {\n el = el.parentElement;\n }\n return el || document.documentElement;\n}\n\n/**\n * Computed the boundaries limits and return them\n * @method\n * @memberof Popper.Utils\n * @param {HTMLElement} popper\n * @param {HTMLElement} reference\n * @param {number} padding\n * @param {HTMLElement} boundariesElement - Element used to define the boundaries\n * @param {Boolean} fixedPosition - Is in fixed position mode\n * @returns {Object} Coordinates of the boundaries\n */\nfunction getBoundaries(popper, reference, padding, boundariesElement) {\n var fixedPosition = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : false;\n\n // NOTE: 1 DOM access here\n\n var boundaries = { top: 0, left: 0 };\n var offsetParent = fixedPosition ? getFixedPositionOffsetParent(popper) : findCommonOffsetParent(popper, reference);\n\n // Handle viewport case\n if (boundariesElement === 'viewport') {\n boundaries = getViewportOffsetRectRelativeToArtbitraryNode(offsetParent, fixedPosition);\n } else {\n // Handle other cases based on DOM element used as boundaries\n var boundariesNode = void 0;\n if (boundariesElement === 'scrollParent') {\n boundariesNode = getScrollParent(getParentNode(reference));\n if (boundariesNode.nodeName === 'BODY') {\n boundariesNode = popper.ownerDocument.documentElement;\n }\n } else if (boundariesElement === 'window') {\n boundariesNode = popper.ownerDocument.documentElement;\n } else {\n boundariesNode = boundariesElement;\n }\n\n var offsets = getOffsetRectRelativeToArbitraryNode(boundariesNode, offsetParent, fixedPosition);\n\n // In case of HTML, we need a different computation\n if (boundariesNode.nodeName === 'HTML' && !isFixed(offsetParent)) {\n var _getWindowSizes = getWindowSizes(popper.ownerDocument),\n height = _getWindowSizes.height,\n width = _getWindowSizes.width;\n\n boundaries.top += offsets.top - offsets.marginTop;\n boundaries.bottom = height + offsets.top;\n boundaries.left += offsets.left - offsets.marginLeft;\n boundaries.right = width + offsets.left;\n } else {\n // for all the other DOM elements, this one is good\n boundaries = offsets;\n }\n }\n\n // Add paddings\n padding = padding || 0;\n var isPaddingNumber = typeof padding === 'number';\n boundaries.left += isPaddingNumber ? padding : padding.left || 0;\n boundaries.top += isPaddingNumber ? padding : padding.top || 0;\n boundaries.right -= isPaddingNumber ? padding : padding.right || 0;\n boundaries.bottom -= isPaddingNumber ? padding : padding.bottom || 0;\n\n return boundaries;\n}\n\nfunction getArea(_ref) {\n var width = _ref.width,\n height = _ref.height;\n\n return width * height;\n}\n\n/**\n * Utility used to transform the `auto` placement to the placement with more\n * available space.\n * @method\n * @memberof Popper.Utils\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nfunction computeAutoPlacement(placement, refRect, popper, reference, boundariesElement) {\n var padding = arguments.length > 5 && arguments[5] !== undefined ? arguments[5] : 0;\n\n if (placement.indexOf('auto') === -1) {\n return placement;\n }\n\n var boundaries = getBoundaries(popper, reference, padding, boundariesElement);\n\n var rects = {\n top: {\n width: boundaries.width,\n height: refRect.top - boundaries.top\n },\n right: {\n width: boundaries.right - refRect.right,\n height: boundaries.height\n },\n bottom: {\n width: boundaries.width,\n height: boundaries.bottom - refRect.bottom\n },\n left: {\n width: refRect.left - boundaries.left,\n height: boundaries.height\n }\n };\n\n var sortedAreas = Object.keys(rects).map(function (key) {\n return _extends({\n key: key\n }, rects[key], {\n area: getArea(rects[key])\n });\n }).sort(function (a, b) {\n return b.area - a.area;\n });\n\n var filteredAreas = sortedAreas.filter(function (_ref2) {\n var width = _ref2.width,\n height = _ref2.height;\n return width >= popper.clientWidth && height >= popper.clientHeight;\n });\n\n var computedPlacement = filteredAreas.length > 0 ? filteredAreas[0].key : sortedAreas[0].key;\n\n var variation = placement.split('-')[1];\n\n return computedPlacement + (variation ? '-' + variation : '');\n}\n\n/**\n * Get offsets to the reference element\n * @method\n * @memberof Popper.Utils\n * @param {Object} state\n * @param {Element} popper - the popper element\n * @param {Element} reference - the reference element (the popper will be relative to this)\n * @param {Element} fixedPosition - is in fixed position mode\n * @returns {Object} An object containing the offsets which will be applied to the popper\n */\nfunction getReferenceOffsets(state, popper, reference) {\n var fixedPosition = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : null;\n\n var commonOffsetParent = fixedPosition ? getFixedPositionOffsetParent(popper) : findCommonOffsetParent(popper, reference);\n return getOffsetRectRelativeToArbitraryNode(reference, commonOffsetParent, fixedPosition);\n}\n\n/**\n * Get the outer sizes of the given element (offset size + margins)\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Object} object containing width and height properties\n */\nfunction getOuterSizes(element) {\n var window = element.ownerDocument.defaultView;\n var styles = window.getComputedStyle(element);\n var x = parseFloat(styles.marginTop || 0) + parseFloat(styles.marginBottom || 0);\n var y = parseFloat(styles.marginLeft || 0) + parseFloat(styles.marginRight || 0);\n var result = {\n width: element.offsetWidth + y,\n height: element.offsetHeight + x\n };\n return result;\n}\n\n/**\n * Get the opposite placement of the given one\n * @method\n * @memberof Popper.Utils\n * @argument {String} placement\n * @returns {String} flipped placement\n */\nfunction getOppositePlacement(placement) {\n var hash = { left: 'right', right: 'left', bottom: 'top', top: 'bottom' };\n return placement.replace(/left|right|bottom|top/g, function (matched) {\n return hash[matched];\n });\n}\n\n/**\n * Get offsets to the popper\n * @method\n * @memberof Popper.Utils\n * @param {Object} position - CSS position the Popper will get applied\n * @param {HTMLElement} popper - the popper element\n * @param {Object} referenceOffsets - the reference offsets (the popper will be relative to this)\n * @param {String} placement - one of the valid placement options\n * @returns {Object} popperOffsets - An object containing the offsets which will be applied to the popper\n */\nfunction getPopperOffsets(popper, referenceOffsets, placement) {\n placement = placement.split('-')[0];\n\n // Get popper node sizes\n var popperRect = getOuterSizes(popper);\n\n // Add position, width and height to our offsets object\n var popperOffsets = {\n width: popperRect.width,\n height: popperRect.height\n };\n\n // depending by the popper placement we have to compute its offsets slightly differently\n var isHoriz = ['right', 'left'].indexOf(placement) !== -1;\n var mainSide = isHoriz ? 'top' : 'left';\n var secondarySide = isHoriz ? 'left' : 'top';\n var measurement = isHoriz ? 'height' : 'width';\n var secondaryMeasurement = !isHoriz ? 'height' : 'width';\n\n popperOffsets[mainSide] = referenceOffsets[mainSide] + referenceOffsets[measurement] / 2 - popperRect[measurement] / 2;\n if (placement === secondarySide) {\n popperOffsets[secondarySide] = referenceOffsets[secondarySide] - popperRect[secondaryMeasurement];\n } else {\n popperOffsets[secondarySide] = referenceOffsets[getOppositePlacement(secondarySide)];\n }\n\n return popperOffsets;\n}\n\n/**\n * Mimics the `find` method of Array\n * @method\n * @memberof Popper.Utils\n * @argument {Array} arr\n * @argument prop\n * @argument value\n * @returns index or -1\n */\nfunction find(arr, check) {\n // use native find if supported\n if (Array.prototype.find) {\n return arr.find(check);\n }\n\n // use `filter` to obtain the same behavior of `find`\n return arr.filter(check)[0];\n}\n\n/**\n * Return the index of the matching object\n * @method\n * @memberof Popper.Utils\n * @argument {Array} arr\n * @argument prop\n * @argument value\n * @returns index or -1\n */\nfunction findIndex(arr, prop, value) {\n // use native findIndex if supported\n if (Array.prototype.findIndex) {\n return arr.findIndex(function (cur) {\n return cur[prop] === value;\n });\n }\n\n // use `find` + `indexOf` if `findIndex` isn't supported\n var match = find(arr, function (obj) {\n return obj[prop] === value;\n });\n return arr.indexOf(match);\n}\n\n/**\n * Loop trough the list of modifiers and run them in order,\n * each of them will then edit the data object.\n * @method\n * @memberof Popper.Utils\n * @param {dataObject} data\n * @param {Array} modifiers\n * @param {String} ends - Optional modifier name used as stopper\n * @returns {dataObject}\n */\nfunction runModifiers(modifiers, data, ends) {\n var modifiersToRun = ends === undefined ? modifiers : modifiers.slice(0, findIndex(modifiers, 'name', ends));\n\n modifiersToRun.forEach(function (modifier) {\n if (modifier['function']) {\n // eslint-disable-line dot-notation\n console.warn('`modifier.function` is deprecated, use `modifier.fn`!');\n }\n var fn = modifier['function'] || modifier.fn; // eslint-disable-line dot-notation\n if (modifier.enabled && isFunction(fn)) {\n // Add properties to offsets to make them a complete clientRect object\n // we do this before each modifier to make sure the previous one doesn't\n // mess with these values\n data.offsets.popper = getClientRect(data.offsets.popper);\n data.offsets.reference = getClientRect(data.offsets.reference);\n\n data = fn(data, modifier);\n }\n });\n\n return data;\n}\n\n/**\n * Updates the position of the popper, computing the new offsets and applying\n * the new style.
    \n * Prefer `scheduleUpdate` over `update` because of performance reasons.\n * @method\n * @memberof Popper\n */\nfunction update() {\n // if popper is destroyed, don't perform any further update\n if (this.state.isDestroyed) {\n return;\n }\n\n var data = {\n instance: this,\n styles: {},\n arrowStyles: {},\n attributes: {},\n flipped: false,\n offsets: {}\n };\n\n // compute reference element offsets\n data.offsets.reference = getReferenceOffsets(this.state, this.popper, this.reference, this.options.positionFixed);\n\n // compute auto placement, store placement inside the data object,\n // modifiers will be able to edit `placement` if needed\n // and refer to originalPlacement to know the original value\n data.placement = computeAutoPlacement(this.options.placement, data.offsets.reference, this.popper, this.reference, this.options.modifiers.flip.boundariesElement, this.options.modifiers.flip.padding);\n\n // store the computed placement inside `originalPlacement`\n data.originalPlacement = data.placement;\n\n data.positionFixed = this.options.positionFixed;\n\n // compute the popper offsets\n data.offsets.popper = getPopperOffsets(this.popper, data.offsets.reference, data.placement);\n\n data.offsets.popper.position = this.options.positionFixed ? 'fixed' : 'absolute';\n\n // run the modifiers\n data = runModifiers(this.modifiers, data);\n\n // the first `update` will call `onCreate` callback\n // the other ones will call `onUpdate` callback\n if (!this.state.isCreated) {\n this.state.isCreated = true;\n this.options.onCreate(data);\n } else {\n this.options.onUpdate(data);\n }\n}\n\n/**\n * Helper used to know if the given modifier is enabled.\n * @method\n * @memberof Popper.Utils\n * @returns {Boolean}\n */\nfunction isModifierEnabled(modifiers, modifierName) {\n return modifiers.some(function (_ref) {\n var name = _ref.name,\n enabled = _ref.enabled;\n return enabled && name === modifierName;\n });\n}\n\n/**\n * Get the prefixed supported property name\n * @method\n * @memberof Popper.Utils\n * @argument {String} property (camelCase)\n * @returns {String} prefixed property (camelCase or PascalCase, depending on the vendor prefix)\n */\nfunction getSupportedPropertyName(property) {\n var prefixes = [false, 'ms', 'Webkit', 'Moz', 'O'];\n var upperProp = property.charAt(0).toUpperCase() + property.slice(1);\n\n for (var i = 0; i < prefixes.length; i++) {\n var prefix = prefixes[i];\n var toCheck = prefix ? '' + prefix + upperProp : property;\n if (typeof document.body.style[toCheck] !== 'undefined') {\n return toCheck;\n }\n }\n return null;\n}\n\n/**\n * Destroys the popper.\n * @method\n * @memberof Popper\n */\nfunction destroy() {\n this.state.isDestroyed = true;\n\n // touch DOM only if `applyStyle` modifier is enabled\n if (isModifierEnabled(this.modifiers, 'applyStyle')) {\n this.popper.removeAttribute('x-placement');\n this.popper.style.position = '';\n this.popper.style.top = '';\n this.popper.style.left = '';\n this.popper.style.right = '';\n this.popper.style.bottom = '';\n this.popper.style.willChange = '';\n this.popper.style[getSupportedPropertyName('transform')] = '';\n }\n\n this.disableEventListeners();\n\n // remove the popper if user explicity asked for the deletion on destroy\n // do not use `remove` because IE11 doesn't support it\n if (this.options.removeOnDestroy) {\n this.popper.parentNode.removeChild(this.popper);\n }\n return this;\n}\n\n/**\n * Get the window associated with the element\n * @argument {Element} element\n * @returns {Window}\n */\nfunction getWindow(element) {\n var ownerDocument = element.ownerDocument;\n return ownerDocument ? ownerDocument.defaultView : window;\n}\n\nfunction attachToScrollParents(scrollParent, event, callback, scrollParents) {\n var isBody = scrollParent.nodeName === 'BODY';\n var target = isBody ? scrollParent.ownerDocument.defaultView : scrollParent;\n target.addEventListener(event, callback, { passive: true });\n\n if (!isBody) {\n attachToScrollParents(getScrollParent(target.parentNode), event, callback, scrollParents);\n }\n scrollParents.push(target);\n}\n\n/**\n * Setup needed event listeners used to update the popper position\n * @method\n * @memberof Popper.Utils\n * @private\n */\nfunction setupEventListeners(reference, options, state, updateBound) {\n // Resize event listener on window\n state.updateBound = updateBound;\n getWindow(reference).addEventListener('resize', state.updateBound, { passive: true });\n\n // Scroll event listener on scroll parents\n var scrollElement = getScrollParent(reference);\n attachToScrollParents(scrollElement, 'scroll', state.updateBound, state.scrollParents);\n state.scrollElement = scrollElement;\n state.eventsEnabled = true;\n\n return state;\n}\n\n/**\n * It will add resize/scroll events and start recalculating\n * position of the popper element when they are triggered.\n * @method\n * @memberof Popper\n */\nfunction enableEventListeners() {\n if (!this.state.eventsEnabled) {\n this.state = setupEventListeners(this.reference, this.options, this.state, this.scheduleUpdate);\n }\n}\n\n/**\n * Remove event listeners used to update the popper position\n * @method\n * @memberof Popper.Utils\n * @private\n */\nfunction removeEventListeners(reference, state) {\n // Remove resize event listener on window\n getWindow(reference).removeEventListener('resize', state.updateBound);\n\n // Remove scroll event listener on scroll parents\n state.scrollParents.forEach(function (target) {\n target.removeEventListener('scroll', state.updateBound);\n });\n\n // Reset state\n state.updateBound = null;\n state.scrollParents = [];\n state.scrollElement = null;\n state.eventsEnabled = false;\n return state;\n}\n\n/**\n * It will remove resize/scroll events and won't recalculate popper position\n * when they are triggered. It also won't trigger `onUpdate` callback anymore,\n * unless you call `update` method manually.\n * @method\n * @memberof Popper\n */\nfunction disableEventListeners() {\n if (this.state.eventsEnabled) {\n cancelAnimationFrame(this.scheduleUpdate);\n this.state = removeEventListeners(this.reference, this.state);\n }\n}\n\n/**\n * Tells if a given input is a number\n * @method\n * @memberof Popper.Utils\n * @param {*} input to check\n * @return {Boolean}\n */\nfunction isNumeric(n) {\n return n !== '' && !isNaN(parseFloat(n)) && isFinite(n);\n}\n\n/**\n * Set the style to the given popper\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element - Element to apply the style to\n * @argument {Object} styles\n * Object with a list of properties and values which will be applied to the element\n */\nfunction setStyles(element, styles) {\n Object.keys(styles).forEach(function (prop) {\n var unit = '';\n // add unit if the value is numeric and is one of the following\n if (['width', 'height', 'top', 'right', 'bottom', 'left'].indexOf(prop) !== -1 && isNumeric(styles[prop])) {\n unit = 'px';\n }\n element.style[prop] = styles[prop] + unit;\n });\n}\n\n/**\n * Set the attributes to the given popper\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element - Element to apply the attributes to\n * @argument {Object} styles\n * Object with a list of properties and values which will be applied to the element\n */\nfunction setAttributes(element, attributes) {\n Object.keys(attributes).forEach(function (prop) {\n var value = attributes[prop];\n if (value !== false) {\n element.setAttribute(prop, attributes[prop]);\n } else {\n element.removeAttribute(prop);\n }\n });\n}\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} data.styles - List of style properties - values to apply to popper element\n * @argument {Object} data.attributes - List of attribute properties - values to apply to popper element\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The same data object\n */\nfunction applyStyle(data) {\n // any property present in `data.styles` will be applied to the popper,\n // in this way we can make the 3rd party modifiers add custom styles to it\n // Be aware, modifiers could override the properties defined in the previous\n // lines of this modifier!\n setStyles(data.instance.popper, data.styles);\n\n // any property present in `data.attributes` will be applied to the popper,\n // they will be set as HTML attributes of the element\n setAttributes(data.instance.popper, data.attributes);\n\n // if arrowElement is defined and arrowStyles has some properties\n if (data.arrowElement && Object.keys(data.arrowStyles).length) {\n setStyles(data.arrowElement, data.arrowStyles);\n }\n\n return data;\n}\n\n/**\n * Set the x-placement attribute before everything else because it could be used\n * to add margins to the popper margins needs to be calculated to get the\n * correct popper offsets.\n * @method\n * @memberof Popper.modifiers\n * @param {HTMLElement} reference - The reference element used to position the popper\n * @param {HTMLElement} popper - The HTML element used as popper\n * @param {Object} options - Popper.js options\n */\nfunction applyStyleOnLoad(reference, popper, options, modifierOptions, state) {\n // compute reference element offsets\n var referenceOffsets = getReferenceOffsets(state, popper, reference, options.positionFixed);\n\n // compute auto placement, store placement inside the data object,\n // modifiers will be able to edit `placement` if needed\n // and refer to originalPlacement to know the original value\n var placement = computeAutoPlacement(options.placement, referenceOffsets, popper, reference, options.modifiers.flip.boundariesElement, options.modifiers.flip.padding);\n\n popper.setAttribute('x-placement', placement);\n\n // Apply `position` to popper before anything else because\n // without the position applied we can't guarantee correct computations\n setStyles(popper, { position: options.positionFixed ? 'fixed' : 'absolute' });\n\n return options;\n}\n\n/**\n * @function\n * @memberof Popper.Utils\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Boolean} shouldRound - If the offsets should be rounded at all\n * @returns {Object} The popper's position offsets rounded\n *\n * The tale of pixel-perfect positioning. It's still not 100% perfect, but as\n * good as it can be within reason.\n * Discussion here: https://github.com/FezVrasta/popper.js/pull/715\n *\n * Low DPI screens cause a popper to be blurry if not using full pixels (Safari\n * as well on High DPI screens).\n *\n * Firefox prefers no rounding for positioning and does not have blurriness on\n * high DPI screens.\n *\n * Only horizontal placement and left/right values need to be considered.\n */\nfunction getRoundedOffsets(data, shouldRound) {\n var _data$offsets = data.offsets,\n popper = _data$offsets.popper,\n reference = _data$offsets.reference;\n var round = Math.round,\n floor = Math.floor;\n\n var noRound = function noRound(v) {\n return v;\n };\n\n var referenceWidth = round(reference.width);\n var popperWidth = round(popper.width);\n\n var isVertical = ['left', 'right'].indexOf(data.placement) !== -1;\n var isVariation = data.placement.indexOf('-') !== -1;\n var sameWidthParity = referenceWidth % 2 === popperWidth % 2;\n var bothOddWidth = referenceWidth % 2 === 1 && popperWidth % 2 === 1;\n\n var horizontalToInteger = !shouldRound ? noRound : isVertical || isVariation || sameWidthParity ? round : floor;\n var verticalToInteger = !shouldRound ? noRound : round;\n\n return {\n left: horizontalToInteger(bothOddWidth && !isVariation && shouldRound ? popper.left - 1 : popper.left),\n top: verticalToInteger(popper.top),\n bottom: verticalToInteger(popper.bottom),\n right: horizontalToInteger(popper.right)\n };\n}\n\nvar isFirefox = isBrowser && /Firefox/i.test(navigator.userAgent);\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nfunction computeStyle(data, options) {\n var x = options.x,\n y = options.y;\n var popper = data.offsets.popper;\n\n // Remove this legacy support in Popper.js v2\n\n var legacyGpuAccelerationOption = find(data.instance.modifiers, function (modifier) {\n return modifier.name === 'applyStyle';\n }).gpuAcceleration;\n if (legacyGpuAccelerationOption !== undefined) {\n console.warn('WARNING: `gpuAcceleration` option moved to `computeStyle` modifier and will not be supported in future versions of Popper.js!');\n }\n var gpuAcceleration = legacyGpuAccelerationOption !== undefined ? legacyGpuAccelerationOption : options.gpuAcceleration;\n\n var offsetParent = getOffsetParent(data.instance.popper);\n var offsetParentRect = getBoundingClientRect(offsetParent);\n\n // Styles\n var styles = {\n position: popper.position\n };\n\n var offsets = getRoundedOffsets(data, window.devicePixelRatio < 2 || !isFirefox);\n\n var sideA = x === 'bottom' ? 'top' : 'bottom';\n var sideB = y === 'right' ? 'left' : 'right';\n\n // if gpuAcceleration is set to `true` and transform is supported,\n // we use `translate3d` to apply the position to the popper we\n // automatically use the supported prefixed version if needed\n var prefixedProperty = getSupportedPropertyName('transform');\n\n // now, let's make a step back and look at this code closely (wtf?)\n // If the content of the popper grows once it's been positioned, it\n // may happen that the popper gets misplaced because of the new content\n // overflowing its reference element\n // To avoid this problem, we provide two options (x and y), which allow\n // the consumer to define the offset origin.\n // If we position a popper on top of a reference element, we can set\n // `x` to `top` to make the popper grow towards its top instead of\n // its bottom.\n var left = void 0,\n top = void 0;\n if (sideA === 'bottom') {\n // when offsetParent is the positioning is relative to the bottom of the screen (excluding the scrollbar)\n // and not the bottom of the html element\n if (offsetParent.nodeName === 'HTML') {\n top = -offsetParent.clientHeight + offsets.bottom;\n } else {\n top = -offsetParentRect.height + offsets.bottom;\n }\n } else {\n top = offsets.top;\n }\n if (sideB === 'right') {\n if (offsetParent.nodeName === 'HTML') {\n left = -offsetParent.clientWidth + offsets.right;\n } else {\n left = -offsetParentRect.width + offsets.right;\n }\n } else {\n left = offsets.left;\n }\n if (gpuAcceleration && prefixedProperty) {\n styles[prefixedProperty] = 'translate3d(' + left + 'px, ' + top + 'px, 0)';\n styles[sideA] = 0;\n styles[sideB] = 0;\n styles.willChange = 'transform';\n } else {\n // othwerise, we use the standard `top`, `left`, `bottom` and `right` properties\n var invertTop = sideA === 'bottom' ? -1 : 1;\n var invertLeft = sideB === 'right' ? -1 : 1;\n styles[sideA] = top * invertTop;\n styles[sideB] = left * invertLeft;\n styles.willChange = sideA + ', ' + sideB;\n }\n\n // Attributes\n var attributes = {\n 'x-placement': data.placement\n };\n\n // Update `data` attributes, styles and arrowStyles\n data.attributes = _extends({}, attributes, data.attributes);\n data.styles = _extends({}, styles, data.styles);\n data.arrowStyles = _extends({}, data.offsets.arrow, data.arrowStyles);\n\n return data;\n}\n\n/**\n * Helper used to know if the given modifier depends from another one.
    \n * It checks if the needed modifier is listed and enabled.\n * @method\n * @memberof Popper.Utils\n * @param {Array} modifiers - list of modifiers\n * @param {String} requestingName - name of requesting modifier\n * @param {String} requestedName - name of requested modifier\n * @returns {Boolean}\n */\nfunction isModifierRequired(modifiers, requestingName, requestedName) {\n var requesting = find(modifiers, function (_ref) {\n var name = _ref.name;\n return name === requestingName;\n });\n\n var isRequired = !!requesting && modifiers.some(function (modifier) {\n return modifier.name === requestedName && modifier.enabled && modifier.order < requesting.order;\n });\n\n if (!isRequired) {\n var _requesting = '`' + requestingName + '`';\n var requested = '`' + requestedName + '`';\n console.warn(requested + ' modifier is required by ' + _requesting + ' modifier in order to work, be sure to include it before ' + _requesting + '!');\n }\n return isRequired;\n}\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nfunction arrow(data, options) {\n var _data$offsets$arrow;\n\n // arrow depends on keepTogether in order to work\n if (!isModifierRequired(data.instance.modifiers, 'arrow', 'keepTogether')) {\n return data;\n }\n\n var arrowElement = options.element;\n\n // if arrowElement is a string, suppose it's a CSS selector\n if (typeof arrowElement === 'string') {\n arrowElement = data.instance.popper.querySelector(arrowElement);\n\n // if arrowElement is not found, don't run the modifier\n if (!arrowElement) {\n return data;\n }\n } else {\n // if the arrowElement isn't a query selector we must check that the\n // provided DOM node is child of its popper node\n if (!data.instance.popper.contains(arrowElement)) {\n console.warn('WARNING: `arrow.element` must be child of its popper element!');\n return data;\n }\n }\n\n var placement = data.placement.split('-')[0];\n var _data$offsets = data.offsets,\n popper = _data$offsets.popper,\n reference = _data$offsets.reference;\n\n var isVertical = ['left', 'right'].indexOf(placement) !== -1;\n\n var len = isVertical ? 'height' : 'width';\n var sideCapitalized = isVertical ? 'Top' : 'Left';\n var side = sideCapitalized.toLowerCase();\n var altSide = isVertical ? 'left' : 'top';\n var opSide = isVertical ? 'bottom' : 'right';\n var arrowElementSize = getOuterSizes(arrowElement)[len];\n\n //\n // extends keepTogether behavior making sure the popper and its\n // reference have enough pixels in conjunction\n //\n\n // top/left side\n if (reference[opSide] - arrowElementSize < popper[side]) {\n data.offsets.popper[side] -= popper[side] - (reference[opSide] - arrowElementSize);\n }\n // bottom/right side\n if (reference[side] + arrowElementSize > popper[opSide]) {\n data.offsets.popper[side] += reference[side] + arrowElementSize - popper[opSide];\n }\n data.offsets.popper = getClientRect(data.offsets.popper);\n\n // compute center of the popper\n var center = reference[side] + reference[len] / 2 - arrowElementSize / 2;\n\n // Compute the sideValue using the updated popper offsets\n // take popper margin in account because we don't have this info available\n var css = getStyleComputedProperty(data.instance.popper);\n var popperMarginSide = parseFloat(css['margin' + sideCapitalized], 10);\n var popperBorderSide = parseFloat(css['border' + sideCapitalized + 'Width'], 10);\n var sideValue = center - data.offsets.popper[side] - popperMarginSide - popperBorderSide;\n\n // prevent arrowElement from being placed not contiguously to its popper\n sideValue = Math.max(Math.min(popper[len] - arrowElementSize, sideValue), 0);\n\n data.arrowElement = arrowElement;\n data.offsets.arrow = (_data$offsets$arrow = {}, defineProperty(_data$offsets$arrow, side, Math.round(sideValue)), defineProperty(_data$offsets$arrow, altSide, ''), _data$offsets$arrow);\n\n return data;\n}\n\n/**\n * Get the opposite placement variation of the given one\n * @method\n * @memberof Popper.Utils\n * @argument {String} placement variation\n * @returns {String} flipped placement variation\n */\nfunction getOppositeVariation(variation) {\n if (variation === 'end') {\n return 'start';\n } else if (variation === 'start') {\n return 'end';\n }\n return variation;\n}\n\n/**\n * List of accepted placements to use as values of the `placement` option.
    \n * Valid placements are:\n * - `auto`\n * - `top`\n * - `right`\n * - `bottom`\n * - `left`\n *\n * Each placement can have a variation from this list:\n * - `-start`\n * - `-end`\n *\n * Variations are interpreted easily if you think of them as the left to right\n * written languages. Horizontally (`top` and `bottom`), `start` is left and `end`\n * is right.
    \n * Vertically (`left` and `right`), `start` is top and `end` is bottom.\n *\n * Some valid examples are:\n * - `top-end` (on top of reference, right aligned)\n * - `right-start` (on right of reference, top aligned)\n * - `bottom` (on bottom, centered)\n * - `auto-end` (on the side with more space available, alignment depends by placement)\n *\n * @static\n * @type {Array}\n * @enum {String}\n * @readonly\n * @method placements\n * @memberof Popper\n */\nvar 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'];\n\n// Get rid of `auto` `auto-start` and `auto-end`\nvar validPlacements = placements.slice(3);\n\n/**\n * Given an initial placement, returns all the subsequent placements\n * clockwise (or counter-clockwise).\n *\n * @method\n * @memberof Popper.Utils\n * @argument {String} placement - A valid placement (it accepts variations)\n * @argument {Boolean} counter - Set to true to walk the placements counterclockwise\n * @returns {Array} placements including their variations\n */\nfunction clockwise(placement) {\n var counter = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;\n\n var index = validPlacements.indexOf(placement);\n var arr = validPlacements.slice(index + 1).concat(validPlacements.slice(0, index));\n return counter ? arr.reverse() : arr;\n}\n\nvar BEHAVIORS = {\n FLIP: 'flip',\n CLOCKWISE: 'clockwise',\n COUNTERCLOCKWISE: 'counterclockwise'\n};\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nfunction flip(data, options) {\n // if `inner` modifier is enabled, we can't use the `flip` modifier\n if (isModifierEnabled(data.instance.modifiers, 'inner')) {\n return data;\n }\n\n if (data.flipped && data.placement === data.originalPlacement) {\n // seems like flip is trying to loop, probably there's not enough space on any of the flippable sides\n return data;\n }\n\n var boundaries = getBoundaries(data.instance.popper, data.instance.reference, options.padding, options.boundariesElement, data.positionFixed);\n\n var placement = data.placement.split('-')[0];\n var placementOpposite = getOppositePlacement(placement);\n var variation = data.placement.split('-')[1] || '';\n\n var flipOrder = [];\n\n switch (options.behavior) {\n case BEHAVIORS.FLIP:\n flipOrder = [placement, placementOpposite];\n break;\n case BEHAVIORS.CLOCKWISE:\n flipOrder = clockwise(placement);\n break;\n case BEHAVIORS.COUNTERCLOCKWISE:\n flipOrder = clockwise(placement, true);\n break;\n default:\n flipOrder = options.behavior;\n }\n\n flipOrder.forEach(function (step, index) {\n if (placement !== step || flipOrder.length === index + 1) {\n return data;\n }\n\n placement = data.placement.split('-')[0];\n placementOpposite = getOppositePlacement(placement);\n\n var popperOffsets = data.offsets.popper;\n var refOffsets = data.offsets.reference;\n\n // using floor because the reference offsets may contain decimals we are not going to consider here\n var floor = Math.floor;\n 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);\n\n var overflowsLeft = floor(popperOffsets.left) < floor(boundaries.left);\n var overflowsRight = floor(popperOffsets.right) > floor(boundaries.right);\n var overflowsTop = floor(popperOffsets.top) < floor(boundaries.top);\n var overflowsBottom = floor(popperOffsets.bottom) > floor(boundaries.bottom);\n\n var overflowsBoundaries = placement === 'left' && overflowsLeft || placement === 'right' && overflowsRight || placement === 'top' && overflowsTop || placement === 'bottom' && overflowsBottom;\n\n // flip the variation if required\n var isVertical = ['top', 'bottom'].indexOf(placement) !== -1;\n var flippedVariation = !!options.flipVariations && (isVertical && variation === 'start' && overflowsLeft || isVertical && variation === 'end' && overflowsRight || !isVertical && variation === 'start' && overflowsTop || !isVertical && variation === 'end' && overflowsBottom);\n\n if (overlapsRef || overflowsBoundaries || flippedVariation) {\n // this boolean to detect any flip loop\n data.flipped = true;\n\n if (overlapsRef || overflowsBoundaries) {\n placement = flipOrder[index + 1];\n }\n\n if (flippedVariation) {\n variation = getOppositeVariation(variation);\n }\n\n data.placement = placement + (variation ? '-' + variation : '');\n\n // this object contains `position`, we want to preserve it along with\n // any additional property we may add in the future\n data.offsets.popper = _extends({}, data.offsets.popper, getPopperOffsets(data.instance.popper, data.offsets.reference, data.placement));\n\n data = runModifiers(data.instance.modifiers, data, 'flip');\n }\n });\n return data;\n}\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nfunction keepTogether(data) {\n var _data$offsets = data.offsets,\n popper = _data$offsets.popper,\n reference = _data$offsets.reference;\n\n var placement = data.placement.split('-')[0];\n var floor = Math.floor;\n var isVertical = ['top', 'bottom'].indexOf(placement) !== -1;\n var side = isVertical ? 'right' : 'bottom';\n var opSide = isVertical ? 'left' : 'top';\n var measurement = isVertical ? 'width' : 'height';\n\n if (popper[side] < floor(reference[opSide])) {\n data.offsets.popper[opSide] = floor(reference[opSide]) - popper[measurement];\n }\n if (popper[opSide] > floor(reference[side])) {\n data.offsets.popper[opSide] = floor(reference[side]);\n }\n\n return data;\n}\n\n/**\n * Converts a string containing value + unit into a px value number\n * @function\n * @memberof {modifiers~offset}\n * @private\n * @argument {String} str - Value + unit string\n * @argument {String} measurement - `height` or `width`\n * @argument {Object} popperOffsets\n * @argument {Object} referenceOffsets\n * @returns {Number|String}\n * Value in pixels, or original string if no values were extracted\n */\nfunction toValue(str, measurement, popperOffsets, referenceOffsets) {\n // separate value from unit\n var split = str.match(/((?:\\-|\\+)?\\d*\\.?\\d*)(.*)/);\n var value = +split[1];\n var unit = split[2];\n\n // If it's not a number it's an operator, I guess\n if (!value) {\n return str;\n }\n\n if (unit.indexOf('%') === 0) {\n var element = void 0;\n switch (unit) {\n case '%p':\n element = popperOffsets;\n break;\n case '%':\n case '%r':\n default:\n element = referenceOffsets;\n }\n\n var rect = getClientRect(element);\n return rect[measurement] / 100 * value;\n } else if (unit === 'vh' || unit === 'vw') {\n // if is a vh or vw, we calculate the size based on the viewport\n var size = void 0;\n if (unit === 'vh') {\n size = Math.max(document.documentElement.clientHeight, window.innerHeight || 0);\n } else {\n size = Math.max(document.documentElement.clientWidth, window.innerWidth || 0);\n }\n return size / 100 * value;\n } else {\n // if is an explicit pixel unit, we get rid of the unit and keep the value\n // if is an implicit unit, it's px, and we return just the value\n return value;\n }\n}\n\n/**\n * Parse an `offset` string to extrapolate `x` and `y` numeric offsets.\n * @function\n * @memberof {modifiers~offset}\n * @private\n * @argument {String} offset\n * @argument {Object} popperOffsets\n * @argument {Object} referenceOffsets\n * @argument {String} basePlacement\n * @returns {Array} a two cells array with x and y offsets in numbers\n */\nfunction parseOffset(offset, popperOffsets, referenceOffsets, basePlacement) {\n var offsets = [0, 0];\n\n // Use height if placement is left or right and index is 0 otherwise use width\n // in this way the first offset will use an axis and the second one\n // will use the other one\n var useHeight = ['right', 'left'].indexOf(basePlacement) !== -1;\n\n // Split the offset string to obtain a list of values and operands\n // The regex addresses values with the plus or minus sign in front (+10, -20, etc)\n var fragments = offset.split(/(\\+|\\-)/).map(function (frag) {\n return frag.trim();\n });\n\n // Detect if the offset string contains a pair of values or a single one\n // they could be separated by comma or space\n var divider = fragments.indexOf(find(fragments, function (frag) {\n return frag.search(/,|\\s/) !== -1;\n }));\n\n if (fragments[divider] && fragments[divider].indexOf(',') === -1) {\n console.warn('Offsets separated by white space(s) are deprecated, use a comma (,) instead.');\n }\n\n // If divider is found, we divide the list of values and operands to divide\n // them by ofset X and Y.\n var splitRegex = /\\s*,\\s*|\\s+/;\n 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];\n\n // Convert the values with units to absolute pixels to allow our computations\n ops = ops.map(function (op, index) {\n // Most of the units rely on the orientation of the popper\n var measurement = (index === 1 ? !useHeight : useHeight) ? 'height' : 'width';\n var mergeWithPrevious = false;\n return op\n // This aggregates any `+` or `-` sign that aren't considered operators\n // e.g.: 10 + +5 => [10, +, +5]\n .reduce(function (a, b) {\n if (a[a.length - 1] === '' && ['+', '-'].indexOf(b) !== -1) {\n a[a.length - 1] = b;\n mergeWithPrevious = true;\n return a;\n } else if (mergeWithPrevious) {\n a[a.length - 1] += b;\n mergeWithPrevious = false;\n return a;\n } else {\n return a.concat(b);\n }\n }, [])\n // Here we convert the string values into number values (in px)\n .map(function (str) {\n return toValue(str, measurement, popperOffsets, referenceOffsets);\n });\n });\n\n // Loop trough the offsets arrays and execute the operations\n ops.forEach(function (op, index) {\n op.forEach(function (frag, index2) {\n if (isNumeric(frag)) {\n offsets[index] += frag * (op[index2 - 1] === '-' ? -1 : 1);\n }\n });\n });\n return offsets;\n}\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @argument {Number|String} options.offset=0\n * The offset value as described in the modifier description\n * @returns {Object} The data object, properly modified\n */\nfunction offset(data, _ref) {\n var offset = _ref.offset;\n var placement = data.placement,\n _data$offsets = data.offsets,\n popper = _data$offsets.popper,\n reference = _data$offsets.reference;\n\n var basePlacement = placement.split('-')[0];\n\n var offsets = void 0;\n if (isNumeric(+offset)) {\n offsets = [+offset, 0];\n } else {\n offsets = parseOffset(offset, popper, reference, basePlacement);\n }\n\n if (basePlacement === 'left') {\n popper.top += offsets[0];\n popper.left -= offsets[1];\n } else if (basePlacement === 'right') {\n popper.top += offsets[0];\n popper.left += offsets[1];\n } else if (basePlacement === 'top') {\n popper.left += offsets[0];\n popper.top -= offsets[1];\n } else if (basePlacement === 'bottom') {\n popper.left += offsets[0];\n popper.top += offsets[1];\n }\n\n data.popper = popper;\n return data;\n}\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nfunction preventOverflow(data, options) {\n var boundariesElement = options.boundariesElement || getOffsetParent(data.instance.popper);\n\n // If offsetParent is the reference element, we really want to\n // go one step up and use the next offsetParent as reference to\n // avoid to make this modifier completely useless and look like broken\n if (data.instance.reference === boundariesElement) {\n boundariesElement = getOffsetParent(boundariesElement);\n }\n\n // NOTE: DOM access here\n // resets the popper's position so that the document size can be calculated excluding\n // the size of the popper element itself\n var transformProp = getSupportedPropertyName('transform');\n var popperStyles = data.instance.popper.style; // assignment to help minification\n var top = popperStyles.top,\n left = popperStyles.left,\n transform = popperStyles[transformProp];\n\n popperStyles.top = '';\n popperStyles.left = '';\n popperStyles[transformProp] = '';\n\n var boundaries = getBoundaries(data.instance.popper, data.instance.reference, options.padding, boundariesElement, data.positionFixed);\n\n // NOTE: DOM access here\n // restores the original style properties after the offsets have been computed\n popperStyles.top = top;\n popperStyles.left = left;\n popperStyles[transformProp] = transform;\n\n options.boundaries = boundaries;\n\n var order = options.priority;\n var popper = data.offsets.popper;\n\n var check = {\n primary: function primary(placement) {\n var value = popper[placement];\n if (popper[placement] < boundaries[placement] && !options.escapeWithReference) {\n value = Math.max(popper[placement], boundaries[placement]);\n }\n return defineProperty({}, placement, value);\n },\n secondary: function secondary(placement) {\n var mainSide = placement === 'right' ? 'left' : 'top';\n var value = popper[mainSide];\n if (popper[placement] > boundaries[placement] && !options.escapeWithReference) {\n value = Math.min(popper[mainSide], boundaries[placement] - (placement === 'right' ? popper.width : popper.height));\n }\n return defineProperty({}, mainSide, value);\n }\n };\n\n order.forEach(function (placement) {\n var side = ['left', 'top'].indexOf(placement) !== -1 ? 'primary' : 'secondary';\n popper = _extends({}, popper, check[side](placement));\n });\n\n data.offsets.popper = popper;\n\n return data;\n}\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nfunction shift(data) {\n var placement = data.placement;\n var basePlacement = placement.split('-')[0];\n var shiftvariation = placement.split('-')[1];\n\n // if shift shiftvariation is specified, run the modifier\n if (shiftvariation) {\n var _data$offsets = data.offsets,\n reference = _data$offsets.reference,\n popper = _data$offsets.popper;\n\n var isVertical = ['bottom', 'top'].indexOf(basePlacement) !== -1;\n var side = isVertical ? 'left' : 'top';\n var measurement = isVertical ? 'width' : 'height';\n\n var shiftOffsets = {\n start: defineProperty({}, side, reference[side]),\n end: defineProperty({}, side, reference[side] + reference[measurement] - popper[measurement])\n };\n\n data.offsets.popper = _extends({}, popper, shiftOffsets[shiftvariation]);\n }\n\n return data;\n}\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nfunction hide(data) {\n if (!isModifierRequired(data.instance.modifiers, 'hide', 'preventOverflow')) {\n return data;\n }\n\n var refRect = data.offsets.reference;\n var bound = find(data.instance.modifiers, function (modifier) {\n return modifier.name === 'preventOverflow';\n }).boundaries;\n\n if (refRect.bottom < bound.top || refRect.left > bound.right || refRect.top > bound.bottom || refRect.right < bound.left) {\n // Avoid unnecessary DOM access if visibility hasn't changed\n if (data.hide === true) {\n return data;\n }\n\n data.hide = true;\n data.attributes['x-out-of-boundaries'] = '';\n } else {\n // Avoid unnecessary DOM access if visibility hasn't changed\n if (data.hide === false) {\n return data;\n }\n\n data.hide = false;\n data.attributes['x-out-of-boundaries'] = false;\n }\n\n return data;\n}\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nfunction inner(data) {\n var placement = data.placement;\n var basePlacement = placement.split('-')[0];\n var _data$offsets = data.offsets,\n popper = _data$offsets.popper,\n reference = _data$offsets.reference;\n\n var isHoriz = ['left', 'right'].indexOf(basePlacement) !== -1;\n\n var subtractLength = ['top', 'left'].indexOf(basePlacement) === -1;\n\n popper[isHoriz ? 'left' : 'top'] = reference[basePlacement] - (subtractLength ? popper[isHoriz ? 'width' : 'height'] : 0);\n\n data.placement = getOppositePlacement(placement);\n data.offsets.popper = getClientRect(popper);\n\n return data;\n}\n\n/**\n * Modifier function, each modifier can have a function of this type assigned\n * to its `fn` property.
    \n * These functions will be called on each update, this means that you must\n * make sure they are performant enough to avoid performance bottlenecks.\n *\n * @function ModifierFn\n * @argument {dataObject} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {dataObject} The data object, properly modified\n */\n\n/**\n * Modifiers are plugins used to alter the behavior of your poppers.
    \n * Popper.js uses a set of 9 modifiers to provide all the basic functionalities\n * needed by the library.\n *\n * Usually you don't want to override the `order`, `fn` and `onLoad` props.\n * All the other properties are configurations that could be tweaked.\n * @namespace modifiers\n */\nvar modifiers = {\n /**\n * Modifier used to shift the popper on the start or end of its reference\n * element.
    \n * It will read the variation of the `placement` property.
    \n * It can be one either `-end` or `-start`.\n * @memberof modifiers\n * @inner\n */\n shift: {\n /** @prop {number} order=100 - Index used to define the order of execution */\n order: 100,\n /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n enabled: true,\n /** @prop {ModifierFn} */\n fn: shift\n },\n\n /**\n * The `offset` modifier can shift your popper on both its axis.\n *\n * It accepts the following units:\n * - `px` or unit-less, interpreted as pixels\n * - `%` or `%r`, percentage relative to the length of the reference element\n * - `%p`, percentage relative to the length of the popper element\n * - `vw`, CSS viewport width unit\n * - `vh`, CSS viewport height unit\n *\n * For length is intended the main axis relative to the placement of the popper.
    \n * This means that if the placement is `top` or `bottom`, the length will be the\n * `width`. In case of `left` or `right`, it will be the `height`.\n *\n * You can provide a single value (as `Number` or `String`), or a pair of values\n * as `String` divided by a comma or one (or more) white spaces.
    \n * The latter is a deprecated method because it leads to confusion and will be\n * removed in v2.
    \n * Additionally, it accepts additions and subtractions between different units.\n * Note that multiplications and divisions aren't supported.\n *\n * Valid examples are:\n * ```\n * 10\n * '10%'\n * '10, 10'\n * '10%, 10'\n * '10 + 10%'\n * '10 - 5vh + 3%'\n * '-10px + 5vh, 5px - 6%'\n * ```\n * > **NB**: If you desire to apply offsets to your poppers in a way that may make them overlap\n * > with their reference element, unfortunately, you will have to disable the `flip` modifier.\n * > You can read more on this at this [issue](https://github.com/FezVrasta/popper.js/issues/373).\n *\n * @memberof modifiers\n * @inner\n */\n offset: {\n /** @prop {number} order=200 - Index used to define the order of execution */\n order: 200,\n /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n enabled: true,\n /** @prop {ModifierFn} */\n fn: offset,\n /** @prop {Number|String} offset=0\n * The offset value as described in the modifier description\n */\n offset: 0\n },\n\n /**\n * Modifier used to prevent the popper from being positioned outside the boundary.\n *\n * A scenario exists where the reference itself is not within the boundaries.
    \n * We can say it has \"escaped the boundaries\" — or just \"escaped\".
    \n * In this case we need to decide whether the popper should either:\n *\n * - detach from the reference and remain \"trapped\" in the boundaries, or\n * - if it should ignore the boundary and \"escape with its reference\"\n *\n * When `escapeWithReference` is set to`true` and reference is completely\n * outside its boundaries, the popper will overflow (or completely leave)\n * the boundaries in order to remain attached to the edge of the reference.\n *\n * @memberof modifiers\n * @inner\n */\n preventOverflow: {\n /** @prop {number} order=300 - Index used to define the order of execution */\n order: 300,\n /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n enabled: true,\n /** @prop {ModifierFn} */\n fn: preventOverflow,\n /**\n * @prop {Array} [priority=['left','right','top','bottom']]\n * Popper will try to prevent overflow following these priorities by default,\n * then, it could overflow on the left and on top of the `boundariesElement`\n */\n priority: ['left', 'right', 'top', 'bottom'],\n /**\n * @prop {number} padding=5\n * Amount of pixel used to define a minimum distance between the boundaries\n * and the popper. This makes sure the popper always has a little padding\n * between the edges of its container\n */\n padding: 5,\n /**\n * @prop {String|HTMLElement} boundariesElement='scrollParent'\n * Boundaries used by the modifier. Can be `scrollParent`, `window`,\n * `viewport` or any DOM element.\n */\n boundariesElement: 'scrollParent'\n },\n\n /**\n * Modifier used to make sure the reference and its popper stay near each other\n * without leaving any gap between the two. Especially useful when the arrow is\n * enabled and you want to ensure that it points to its reference element.\n * It cares only about the first axis. You can still have poppers with margin\n * between the popper and its reference element.\n * @memberof modifiers\n * @inner\n */\n keepTogether: {\n /** @prop {number} order=400 - Index used to define the order of execution */\n order: 400,\n /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n enabled: true,\n /** @prop {ModifierFn} */\n fn: keepTogether\n },\n\n /**\n * This modifier is used to move the `arrowElement` of the popper to make\n * sure it is positioned between the reference element and its popper element.\n * It will read the outer size of the `arrowElement` node to detect how many\n * pixels of conjunction are needed.\n *\n * It has no effect if no `arrowElement` is provided.\n * @memberof modifiers\n * @inner\n */\n arrow: {\n /** @prop {number} order=500 - Index used to define the order of execution */\n order: 500,\n /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n enabled: true,\n /** @prop {ModifierFn} */\n fn: arrow,\n /** @prop {String|HTMLElement} element='[x-arrow]' - Selector or node used as arrow */\n element: '[x-arrow]'\n },\n\n /**\n * Modifier used to flip the popper's placement when it starts to overlap its\n * reference element.\n *\n * Requires the `preventOverflow` modifier before it in order to work.\n *\n * **NOTE:** this modifier will interrupt the current update cycle and will\n * restart it if it detects the need to flip the placement.\n * @memberof modifiers\n * @inner\n */\n flip: {\n /** @prop {number} order=600 - Index used to define the order of execution */\n order: 600,\n /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n enabled: true,\n /** @prop {ModifierFn} */\n fn: flip,\n /**\n * @prop {String|Array} behavior='flip'\n * The behavior used to change the popper's placement. It can be one of\n * `flip`, `clockwise`, `counterclockwise` or an array with a list of valid\n * placements (with optional variations)\n */\n behavior: 'flip',\n /**\n * @prop {number} padding=5\n * The popper will flip if it hits the edges of the `boundariesElement`\n */\n padding: 5,\n /**\n * @prop {String|HTMLElement} boundariesElement='viewport'\n * The element which will define the boundaries of the popper position.\n * The popper will never be placed outside of the defined boundaries\n * (except if `keepTogether` is enabled)\n */\n boundariesElement: 'viewport'\n },\n\n /**\n * Modifier used to make the popper flow toward the inner of the reference element.\n * By default, when this modifier is disabled, the popper will be placed outside\n * the reference element.\n * @memberof modifiers\n * @inner\n */\n inner: {\n /** @prop {number} order=700 - Index used to define the order of execution */\n order: 700,\n /** @prop {Boolean} enabled=false - Whether the modifier is enabled or not */\n enabled: false,\n /** @prop {ModifierFn} */\n fn: inner\n },\n\n /**\n * Modifier used to hide the popper when its reference element is outside of the\n * popper boundaries. It will set a `x-out-of-boundaries` attribute which can\n * be used to hide with a CSS selector the popper when its reference is\n * out of boundaries.\n *\n * Requires the `preventOverflow` modifier before it in order to work.\n * @memberof modifiers\n * @inner\n */\n hide: {\n /** @prop {number} order=800 - Index used to define the order of execution */\n order: 800,\n /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n enabled: true,\n /** @prop {ModifierFn} */\n fn: hide\n },\n\n /**\n * Computes the style that will be applied to the popper element to gets\n * properly positioned.\n *\n * Note that this modifier will not touch the DOM, it just prepares the styles\n * so that `applyStyle` modifier can apply it. This separation is useful\n * in case you need to replace `applyStyle` with a custom implementation.\n *\n * This modifier has `850` as `order` value to maintain backward compatibility\n * with previous versions of Popper.js. Expect the modifiers ordering method\n * to change in future major versions of the library.\n *\n * @memberof modifiers\n * @inner\n */\n computeStyle: {\n /** @prop {number} order=850 - Index used to define the order of execution */\n order: 850,\n /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n enabled: true,\n /** @prop {ModifierFn} */\n fn: computeStyle,\n /**\n * @prop {Boolean} gpuAcceleration=true\n * If true, it uses the CSS 3D transformation to position the popper.\n * Otherwise, it will use the `top` and `left` properties\n */\n gpuAcceleration: true,\n /**\n * @prop {string} [x='bottom']\n * Where to anchor the X axis (`bottom` or `top`). AKA X offset origin.\n * Change this if your popper should grow in a direction different from `bottom`\n */\n x: 'bottom',\n /**\n * @prop {string} [x='left']\n * Where to anchor the Y axis (`left` or `right`). AKA Y offset origin.\n * Change this if your popper should grow in a direction different from `right`\n */\n y: 'right'\n },\n\n /**\n * Applies the computed styles to the popper element.\n *\n * All the DOM manipulations are limited to this modifier. This is useful in case\n * you want to integrate Popper.js inside a framework or view library and you\n * want to delegate all the DOM manipulations to it.\n *\n * Note that if you disable this modifier, you must make sure the popper element\n * has its position set to `absolute` before Popper.js can do its work!\n *\n * Just disable this modifier and define your own to achieve the desired effect.\n *\n * @memberof modifiers\n * @inner\n */\n applyStyle: {\n /** @prop {number} order=900 - Index used to define the order of execution */\n order: 900,\n /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n enabled: true,\n /** @prop {ModifierFn} */\n fn: applyStyle,\n /** @prop {Function} */\n onLoad: applyStyleOnLoad,\n /**\n * @deprecated since version 1.10.0, the property moved to `computeStyle` modifier\n * @prop {Boolean} gpuAcceleration=true\n * If true, it uses the CSS 3D transformation to position the popper.\n * Otherwise, it will use the `top` and `left` properties\n */\n gpuAcceleration: undefined\n }\n};\n\n/**\n * The `dataObject` is an object containing all the information used by Popper.js.\n * This object is passed to modifiers and to the `onCreate` and `onUpdate` callbacks.\n * @name dataObject\n * @property {Object} data.instance The Popper.js instance\n * @property {String} data.placement Placement applied to popper\n * @property {String} data.originalPlacement Placement originally defined on init\n * @property {Boolean} data.flipped True if popper has been flipped by flip modifier\n * @property {Boolean} data.hide True if the reference element is out of boundaries, useful to know when to hide the popper\n * @property {HTMLElement} data.arrowElement Node used as arrow by arrow modifier\n * @property {Object} data.styles Any CSS property defined here will be applied to the popper. It expects the JavaScript nomenclature (eg. `marginBottom`)\n * @property {Object} data.arrowStyles Any CSS property defined here will be applied to the popper arrow. It expects the JavaScript nomenclature (eg. `marginBottom`)\n * @property {Object} data.boundaries Offsets of the popper boundaries\n * @property {Object} data.offsets The measurements of popper, reference and arrow elements\n * @property {Object} data.offsets.popper `top`, `left`, `width`, `height` values\n * @property {Object} data.offsets.reference `top`, `left`, `width`, `height` values\n * @property {Object} data.offsets.arrow] `top` and `left` offsets, only one of them will be different from 0\n */\n\n/**\n * Default options provided to Popper.js constructor.
    \n * These can be overridden using the `options` argument of Popper.js.
    \n * To override an option, simply pass an object with the same\n * structure of the `options` object, as the 3rd argument. For example:\n * ```\n * new Popper(ref, pop, {\n * modifiers: {\n * preventOverflow: { enabled: false }\n * }\n * })\n * ```\n * @type {Object}\n * @static\n * @memberof Popper\n */\nvar Defaults = {\n /**\n * Popper's placement.\n * @prop {Popper.placements} placement='bottom'\n */\n placement: 'bottom',\n\n /**\n * Set this to true if you want popper to position it self in 'fixed' mode\n * @prop {Boolean} positionFixed=false\n */\n positionFixed: false,\n\n /**\n * Whether events (resize, scroll) are initially enabled.\n * @prop {Boolean} eventsEnabled=true\n */\n eventsEnabled: true,\n\n /**\n * Set to true if you want to automatically remove the popper when\n * you call the `destroy` method.\n * @prop {Boolean} removeOnDestroy=false\n */\n removeOnDestroy: false,\n\n /**\n * Callback called when the popper is created.
    \n * By default, it is set to no-op.
    \n * Access Popper.js instance with `data.instance`.\n * @prop {onCreate}\n */\n onCreate: function onCreate() {},\n\n /**\n * Callback called when the popper is updated. This callback is not called\n * on the initialization/creation of the popper, but only on subsequent\n * updates.
    \n * By default, it is set to no-op.
    \n * Access Popper.js instance with `data.instance`.\n * @prop {onUpdate}\n */\n onUpdate: function onUpdate() {},\n\n /**\n * List of modifiers used to modify the offsets before they are applied to the popper.\n * They provide most of the functionalities of Popper.js.\n * @prop {modifiers}\n */\n modifiers: modifiers\n};\n\n/**\n * @callback onCreate\n * @param {dataObject} data\n */\n\n/**\n * @callback onUpdate\n * @param {dataObject} data\n */\n\n// Utils\n// Methods\nvar Popper = function () {\n /**\n * Creates a new Popper.js instance.\n * @class Popper\n * @param {HTMLElement|referenceObject} reference - The reference element used to position the popper\n * @param {HTMLElement} popper - The HTML element used as the popper\n * @param {Object} options - Your custom options to override the ones defined in [Defaults](#defaults)\n * @return {Object} instance - The generated Popper.js instance\n */\n function Popper(reference, popper) {\n var _this = this;\n\n var options = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};\n classCallCheck(this, Popper);\n\n this.scheduleUpdate = function () {\n return requestAnimationFrame(_this.update);\n };\n\n // make update() debounced, so that it only runs at most once-per-tick\n this.update = debounce(this.update.bind(this));\n\n // with {} we create a new object with the options inside it\n this.options = _extends({}, Popper.Defaults, options);\n\n // init state\n this.state = {\n isDestroyed: false,\n isCreated: false,\n scrollParents: []\n };\n\n // get reference and popper elements (allow jQuery wrappers)\n this.reference = reference && reference.jquery ? reference[0] : reference;\n this.popper = popper && popper.jquery ? popper[0] : popper;\n\n // Deep merge modifiers options\n this.options.modifiers = {};\n Object.keys(_extends({}, Popper.Defaults.modifiers, options.modifiers)).forEach(function (name) {\n _this.options.modifiers[name] = _extends({}, Popper.Defaults.modifiers[name] || {}, options.modifiers ? options.modifiers[name] : {});\n });\n\n // Refactoring modifiers' list (Object => Array)\n this.modifiers = Object.keys(this.options.modifiers).map(function (name) {\n return _extends({\n name: name\n }, _this.options.modifiers[name]);\n })\n // sort the modifiers by order\n .sort(function (a, b) {\n return a.order - b.order;\n });\n\n // modifiers have the ability to execute arbitrary code when Popper.js get inited\n // such code is executed in the same order of its modifier\n // they could add new properties to their options configuration\n // BE AWARE: don't add options to `options.modifiers.name` but to `modifierOptions`!\n this.modifiers.forEach(function (modifierOptions) {\n if (modifierOptions.enabled && isFunction(modifierOptions.onLoad)) {\n modifierOptions.onLoad(_this.reference, _this.popper, _this.options, modifierOptions, _this.state);\n }\n });\n\n // fire the first update to position the popper in the right place\n this.update();\n\n var eventsEnabled = this.options.eventsEnabled;\n if (eventsEnabled) {\n // setup event listeners, they will take care of update the position in specific situations\n this.enableEventListeners();\n }\n\n this.state.eventsEnabled = eventsEnabled;\n }\n\n // We can't use class properties because they don't get listed in the\n // class prototype and break stuff like Sinon stubs\n\n\n createClass(Popper, [{\n key: 'update',\n value: function update$$1() {\n return update.call(this);\n }\n }, {\n key: 'destroy',\n value: function destroy$$1() {\n return destroy.call(this);\n }\n }, {\n key: 'enableEventListeners',\n value: function enableEventListeners$$1() {\n return enableEventListeners.call(this);\n }\n }, {\n key: 'disableEventListeners',\n value: function disableEventListeners$$1() {\n return disableEventListeners.call(this);\n }\n\n /**\n * Schedules an update. It will run on the next UI update available.\n * @method scheduleUpdate\n * @memberof Popper\n */\n\n\n /**\n * Collection of utilities useful when writing custom modifiers.\n * Starting from version 1.7, this method is available only if you\n * include `popper-utils.js` before `popper.js`.\n *\n * **DEPRECATION**: This way to access PopperUtils is deprecated\n * and will be removed in v2! Use the PopperUtils module directly instead.\n * Due to the high instability of the methods contained in Utils, we can't\n * guarantee them to follow semver. Use them at your own risk!\n * @static\n * @private\n * @type {Object}\n * @deprecated since version 1.8\n * @member Utils\n * @memberof Popper\n */\n\n }]);\n return Popper;\n}();\n\n/**\n * The `referenceObject` is an object that provides an interface compatible with Popper.js\n * and lets you use it as replacement of a real DOM node.
    \n * You can use this method to position a popper relatively to a set of coordinates\n * in case you don't have a DOM node to use as reference.\n *\n * ```\n * new Popper(referenceObject, popperNode);\n * ```\n *\n * NB: This feature isn't supported in Internet Explorer 10.\n * @name referenceObject\n * @property {Function} data.getBoundingClientRect\n * A function that returns a set of coordinates compatible with the native `getBoundingClientRect` method.\n * @property {number} data.clientWidth\n * An ES6 getter that will return the width of the virtual reference element.\n * @property {number} data.clientHeight\n * An ES6 getter that will return the height of the virtual reference element.\n */\n\n\nPopper.Utils = (typeof window !== 'undefined' ? window : global).PopperUtils;\nPopper.placements = placements;\nPopper.Defaults = Defaults;\n\nexport default Popper;\n//# sourceMappingURL=popper.js.map\n","/**\n * --------------------------------------------------------------------------\n * Bootstrap (v4.3.1): dropdown.js\n * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)\n * --------------------------------------------------------------------------\n */\n\nimport $ from 'jquery'\nimport Popper from 'popper.js'\nimport Util from './util'\n\n/**\n * ------------------------------------------------------------------------\n * Constants\n * ------------------------------------------------------------------------\n */\n\nconst NAME = 'dropdown'\nconst VERSION = '4.3.1'\nconst DATA_KEY = 'bs.dropdown'\nconst EVENT_KEY = `.${DATA_KEY}`\nconst DATA_API_KEY = '.data-api'\nconst JQUERY_NO_CONFLICT = $.fn[NAME]\nconst ESCAPE_KEYCODE = 27 // KeyboardEvent.which value for Escape (Esc) key\nconst SPACE_KEYCODE = 32 // KeyboardEvent.which value for space key\nconst TAB_KEYCODE = 9 // KeyboardEvent.which value for tab key\nconst ARROW_UP_KEYCODE = 38 // KeyboardEvent.which value for up arrow key\nconst ARROW_DOWN_KEYCODE = 40 // KeyboardEvent.which value for down arrow key\nconst RIGHT_MOUSE_BUTTON_WHICH = 3 // MouseEvent.which value for the right button (assuming a right-handed mouse)\nconst REGEXP_KEYDOWN = new RegExp(`${ARROW_UP_KEYCODE}|${ARROW_DOWN_KEYCODE}|${ESCAPE_KEYCODE}`)\n\nconst Event = {\n HIDE : `hide${EVENT_KEY}`,\n HIDDEN : `hidden${EVENT_KEY}`,\n SHOW : `show${EVENT_KEY}`,\n SHOWN : `shown${EVENT_KEY}`,\n CLICK : `click${EVENT_KEY}`,\n CLICK_DATA_API : `click${EVENT_KEY}${DATA_API_KEY}`,\n KEYDOWN_DATA_API : `keydown${EVENT_KEY}${DATA_API_KEY}`,\n KEYUP_DATA_API : `keyup${EVENT_KEY}${DATA_API_KEY}`\n}\n\nconst ClassName = {\n DISABLED : 'disabled',\n SHOW : 'show',\n DROPUP : 'dropup',\n DROPRIGHT : 'dropright',\n DROPLEFT : 'dropleft',\n MENURIGHT : 'dropdown-menu-right',\n MENULEFT : 'dropdown-menu-left',\n POSITION_STATIC : 'position-static'\n}\n\nconst Selector = {\n DATA_TOGGLE : '[data-toggle=\"dropdown\"]',\n FORM_CHILD : '.dropdown form',\n MENU : '.dropdown-menu',\n NAVBAR_NAV : '.navbar-nav',\n VISIBLE_ITEMS : '.dropdown-menu .dropdown-item:not(.disabled):not(:disabled)'\n}\n\nconst AttachmentMap = {\n TOP : 'top-start',\n TOPEND : 'top-end',\n BOTTOM : 'bottom-start',\n BOTTOMEND : 'bottom-end',\n RIGHT : 'right-start',\n RIGHTEND : 'right-end',\n LEFT : 'left-start',\n LEFTEND : 'left-end'\n}\n\nconst Default = {\n offset : 0,\n flip : true,\n boundary : 'scrollParent',\n reference : 'toggle',\n display : 'dynamic'\n}\n\nconst DefaultType = {\n offset : '(number|string|function)',\n flip : 'boolean',\n boundary : '(string|element)',\n reference : '(string|element)',\n display : 'string'\n}\n\n/**\n * ------------------------------------------------------------------------\n * Class Definition\n * ------------------------------------------------------------------------\n */\n\nclass Dropdown {\n constructor(element, config) {\n this._element = element\n this._popper = null\n this._config = this._getConfig(config)\n this._menu = this._getMenuElement()\n this._inNavbar = this._detectNavbar()\n\n this._addEventListeners()\n }\n\n // Getters\n\n static get VERSION() {\n return VERSION\n }\n\n static get Default() {\n return Default\n }\n\n static get DefaultType() {\n return DefaultType\n }\n\n // Public\n\n toggle() {\n if (this._element.disabled || $(this._element).hasClass(ClassName.DISABLED)) {\n return\n }\n\n const parent = Dropdown._getParentFromElement(this._element)\n const isActive = $(this._menu).hasClass(ClassName.SHOW)\n\n Dropdown._clearMenus()\n\n if (isActive) {\n return\n }\n\n const relatedTarget = {\n relatedTarget: this._element\n }\n const showEvent = $.Event(Event.SHOW, relatedTarget)\n\n $(parent).trigger(showEvent)\n\n if (showEvent.isDefaultPrevented()) {\n return\n }\n\n // Disable totally Popper.js for Dropdown in Navbar\n if (!this._inNavbar) {\n /**\n * Check for Popper dependency\n * Popper - https://popper.js.org\n */\n if (typeof Popper === 'undefined') {\n throw new TypeError('Bootstrap\\'s dropdowns require Popper.js (https://popper.js.org/)')\n }\n\n let referenceElement = this._element\n\n if (this._config.reference === 'parent') {\n referenceElement = parent\n } else if (Util.isElement(this._config.reference)) {\n referenceElement = this._config.reference\n\n // Check if it's jQuery element\n if (typeof this._config.reference.jquery !== 'undefined') {\n referenceElement = this._config.reference[0]\n }\n }\n\n // If boundary is not `scrollParent`, then set position to `static`\n // to allow the menu to \"escape\" the scroll parent's boundaries\n // https://github.com/twbs/bootstrap/issues/24251\n if (this._config.boundary !== 'scrollParent') {\n $(parent).addClass(ClassName.POSITION_STATIC)\n }\n this._popper = new Popper(referenceElement, this._menu, this._getPopperConfig())\n }\n\n // If this is a touch-enabled device we add extra\n // empty mouseover listeners to the body's immediate children;\n // only needed because of broken event delegation on iOS\n // https://www.quirksmode.org/blog/archives/2014/02/mouse_event_bub.html\n if ('ontouchstart' in document.documentElement &&\n $(parent).closest(Selector.NAVBAR_NAV).length === 0) {\n $(document.body).children().on('mouseover', null, $.noop)\n }\n\n this._element.focus()\n this._element.setAttribute('aria-expanded', true)\n\n $(this._menu).toggleClass(ClassName.SHOW)\n $(parent)\n .toggleClass(ClassName.SHOW)\n .trigger($.Event(Event.SHOWN, relatedTarget))\n }\n\n show() {\n if (this._element.disabled || $(this._element).hasClass(ClassName.DISABLED) || $(this._menu).hasClass(ClassName.SHOW)) {\n return\n }\n\n const relatedTarget = {\n relatedTarget: this._element\n }\n const showEvent = $.Event(Event.SHOW, relatedTarget)\n const parent = Dropdown._getParentFromElement(this._element)\n\n $(parent).trigger(showEvent)\n\n if (showEvent.isDefaultPrevented()) {\n return\n }\n\n $(this._menu).toggleClass(ClassName.SHOW)\n $(parent)\n .toggleClass(ClassName.SHOW)\n .trigger($.Event(Event.SHOWN, relatedTarget))\n }\n\n hide() {\n if (this._element.disabled || $(this._element).hasClass(ClassName.DISABLED) || !$(this._menu).hasClass(ClassName.SHOW)) {\n return\n }\n\n const relatedTarget = {\n relatedTarget: this._element\n }\n const hideEvent = $.Event(Event.HIDE, relatedTarget)\n const parent = Dropdown._getParentFromElement(this._element)\n\n $(parent).trigger(hideEvent)\n\n if (hideEvent.isDefaultPrevented()) {\n return\n }\n\n $(this._menu).toggleClass(ClassName.SHOW)\n $(parent)\n .toggleClass(ClassName.SHOW)\n .trigger($.Event(Event.HIDDEN, relatedTarget))\n }\n\n dispose() {\n $.removeData(this._element, DATA_KEY)\n $(this._element).off(EVENT_KEY)\n this._element = null\n this._menu = null\n if (this._popper !== null) {\n this._popper.destroy()\n this._popper = null\n }\n }\n\n update() {\n this._inNavbar = this._detectNavbar()\n if (this._popper !== null) {\n this._popper.scheduleUpdate()\n }\n }\n\n // Private\n\n _addEventListeners() {\n $(this._element).on(Event.CLICK, (event) => {\n event.preventDefault()\n event.stopPropagation()\n this.toggle()\n })\n }\n\n _getConfig(config) {\n config = {\n ...this.constructor.Default,\n ...$(this._element).data(),\n ...config\n }\n\n Util.typeCheckConfig(\n NAME,\n config,\n this.constructor.DefaultType\n )\n\n return config\n }\n\n _getMenuElement() {\n if (!this._menu) {\n const parent = Dropdown._getParentFromElement(this._element)\n\n if (parent) {\n this._menu = parent.querySelector(Selector.MENU)\n }\n }\n return this._menu\n }\n\n _getPlacement() {\n const $parentDropdown = $(this._element.parentNode)\n let placement = AttachmentMap.BOTTOM\n\n // Handle dropup\n if ($parentDropdown.hasClass(ClassName.DROPUP)) {\n placement = AttachmentMap.TOP\n if ($(this._menu).hasClass(ClassName.MENURIGHT)) {\n placement = AttachmentMap.TOPEND\n }\n } else if ($parentDropdown.hasClass(ClassName.DROPRIGHT)) {\n placement = AttachmentMap.RIGHT\n } else if ($parentDropdown.hasClass(ClassName.DROPLEFT)) {\n placement = AttachmentMap.LEFT\n } else if ($(this._menu).hasClass(ClassName.MENURIGHT)) {\n placement = AttachmentMap.BOTTOMEND\n }\n return placement\n }\n\n _detectNavbar() {\n return $(this._element).closest('.navbar').length > 0\n }\n\n _getOffset() {\n const offset = {}\n\n if (typeof this._config.offset === 'function') {\n offset.fn = (data) => {\n data.offsets = {\n ...data.offsets,\n ...this._config.offset(data.offsets, this._element) || {}\n }\n\n return data\n }\n } else {\n offset.offset = this._config.offset\n }\n\n return offset\n }\n\n _getPopperConfig() {\n const popperConfig = {\n placement: this._getPlacement(),\n modifiers: {\n offset: this._getOffset(),\n flip: {\n enabled: this._config.flip\n },\n preventOverflow: {\n boundariesElement: this._config.boundary\n }\n }\n }\n\n // Disable Popper.js if we have a static display\n if (this._config.display === 'static') {\n popperConfig.modifiers.applyStyle = {\n enabled: false\n }\n }\n\n return popperConfig\n }\n\n // Static\n\n static _jQueryInterface(config) {\n return this.each(function () {\n let data = $(this).data(DATA_KEY)\n const _config = typeof config === 'object' ? config : null\n\n if (!data) {\n data = new Dropdown(this, _config)\n $(this).data(DATA_KEY, data)\n }\n\n if (typeof config === 'string') {\n if (typeof data[config] === 'undefined') {\n throw new TypeError(`No method named \"${config}\"`)\n }\n data[config]()\n }\n })\n }\n\n static _clearMenus(event) {\n if (event && (event.which === RIGHT_MOUSE_BUTTON_WHICH ||\n event.type === 'keyup' && event.which !== TAB_KEYCODE)) {\n return\n }\n\n const toggles = [].slice.call(document.querySelectorAll(Selector.DATA_TOGGLE))\n\n for (let i = 0, len = toggles.length; i < len; i++) {\n const parent = Dropdown._getParentFromElement(toggles[i])\n const context = $(toggles[i]).data(DATA_KEY)\n const relatedTarget = {\n relatedTarget: toggles[i]\n }\n\n if (event && event.type === 'click') {\n relatedTarget.clickEvent = event\n }\n\n if (!context) {\n continue\n }\n\n const dropdownMenu = context._menu\n if (!$(parent).hasClass(ClassName.SHOW)) {\n continue\n }\n\n if (event && (event.type === 'click' &&\n /input|textarea/i.test(event.target.tagName) || event.type === 'keyup' && event.which === TAB_KEYCODE) &&\n $.contains(parent, event.target)) {\n continue\n }\n\n const hideEvent = $.Event(Event.HIDE, relatedTarget)\n $(parent).trigger(hideEvent)\n if (hideEvent.isDefaultPrevented()) {\n continue\n }\n\n // If this is a touch-enabled device we remove the extra\n // empty mouseover listeners we added for iOS support\n if ('ontouchstart' in document.documentElement) {\n $(document.body).children().off('mouseover', null, $.noop)\n }\n\n toggles[i].setAttribute('aria-expanded', 'false')\n\n $(dropdownMenu).removeClass(ClassName.SHOW)\n $(parent)\n .removeClass(ClassName.SHOW)\n .trigger($.Event(Event.HIDDEN, relatedTarget))\n }\n }\n\n static _getParentFromElement(element) {\n let parent\n const selector = Util.getSelectorFromElement(element)\n\n if (selector) {\n parent = document.querySelector(selector)\n }\n\n return parent || element.parentNode\n }\n\n // eslint-disable-next-line complexity\n static _dataApiKeydownHandler(event) {\n // If not input/textarea:\n // - And not a key in REGEXP_KEYDOWN => not a dropdown command\n // If input/textarea:\n // - If space key => not a dropdown command\n // - If key is other than escape\n // - If key is not up or down => not a dropdown command\n // - If trigger inside the menu => not a dropdown command\n if (/input|textarea/i.test(event.target.tagName)\n ? event.which === SPACE_KEYCODE || event.which !== ESCAPE_KEYCODE &&\n (event.which !== ARROW_DOWN_KEYCODE && event.which !== ARROW_UP_KEYCODE ||\n $(event.target).closest(Selector.MENU).length) : !REGEXP_KEYDOWN.test(event.which)) {\n return\n }\n\n event.preventDefault()\n event.stopPropagation()\n\n if (this.disabled || $(this).hasClass(ClassName.DISABLED)) {\n return\n }\n\n const parent = Dropdown._getParentFromElement(this)\n const isActive = $(parent).hasClass(ClassName.SHOW)\n\n if (!isActive || isActive && (event.which === ESCAPE_KEYCODE || event.which === SPACE_KEYCODE)) {\n if (event.which === ESCAPE_KEYCODE) {\n const toggle = parent.querySelector(Selector.DATA_TOGGLE)\n $(toggle).trigger('focus')\n }\n\n $(this).trigger('click')\n return\n }\n\n const items = [].slice.call(parent.querySelectorAll(Selector.VISIBLE_ITEMS))\n\n if (items.length === 0) {\n return\n }\n\n let index = items.indexOf(event.target)\n\n if (event.which === ARROW_UP_KEYCODE && index > 0) { // Up\n index--\n }\n\n if (event.which === ARROW_DOWN_KEYCODE && index < items.length - 1) { // Down\n index++\n }\n\n if (index < 0) {\n index = 0\n }\n\n items[index].focus()\n }\n}\n\n/**\n * ------------------------------------------------------------------------\n * Data Api implementation\n * ------------------------------------------------------------------------\n */\n\n$(document)\n .on(Event.KEYDOWN_DATA_API, Selector.DATA_TOGGLE, Dropdown._dataApiKeydownHandler)\n .on(Event.KEYDOWN_DATA_API, Selector.MENU, Dropdown._dataApiKeydownHandler)\n .on(`${Event.CLICK_DATA_API} ${Event.KEYUP_DATA_API}`, Dropdown._clearMenus)\n .on(Event.CLICK_DATA_API, Selector.DATA_TOGGLE, function (event) {\n event.preventDefault()\n event.stopPropagation()\n Dropdown._jQueryInterface.call($(this), 'toggle')\n })\n .on(Event.CLICK_DATA_API, Selector.FORM_CHILD, (e) => {\n e.stopPropagation()\n })\n\n/**\n * ------------------------------------------------------------------------\n * jQuery\n * ------------------------------------------------------------------------\n */\n\n$.fn[NAME] = Dropdown._jQueryInterface\n$.fn[NAME].Constructor = Dropdown\n$.fn[NAME].noConflict = () => {\n $.fn[NAME] = JQUERY_NO_CONFLICT\n return Dropdown._jQueryInterface\n}\n\n\nexport default Dropdown\n","/**\n * --------------------------------------------------------------------------\n * Bootstrap (v4.3.1): modal.js\n * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)\n * --------------------------------------------------------------------------\n */\n\nimport $ from 'jquery'\nimport Util from './util'\n\n/**\n * ------------------------------------------------------------------------\n * Constants\n * ------------------------------------------------------------------------\n */\n\nconst NAME = 'modal'\nconst VERSION = '4.3.1'\nconst DATA_KEY = 'bs.modal'\nconst EVENT_KEY = `.${DATA_KEY}`\nconst DATA_API_KEY = '.data-api'\nconst JQUERY_NO_CONFLICT = $.fn[NAME]\nconst ESCAPE_KEYCODE = 27 // KeyboardEvent.which value for Escape (Esc) key\n\nconst Default = {\n backdrop : true,\n keyboard : true,\n focus : true,\n show : true\n}\n\nconst DefaultType = {\n backdrop : '(boolean|string)',\n keyboard : 'boolean',\n focus : 'boolean',\n show : 'boolean'\n}\n\nconst Event = {\n HIDE : `hide${EVENT_KEY}`,\n HIDDEN : `hidden${EVENT_KEY}`,\n SHOW : `show${EVENT_KEY}`,\n SHOWN : `shown${EVENT_KEY}`,\n FOCUSIN : `focusin${EVENT_KEY}`,\n RESIZE : `resize${EVENT_KEY}`,\n CLICK_DISMISS : `click.dismiss${EVENT_KEY}`,\n KEYDOWN_DISMISS : `keydown.dismiss${EVENT_KEY}`,\n MOUSEUP_DISMISS : `mouseup.dismiss${EVENT_KEY}`,\n MOUSEDOWN_DISMISS : `mousedown.dismiss${EVENT_KEY}`,\n CLICK_DATA_API : `click${EVENT_KEY}${DATA_API_KEY}`\n}\n\nconst ClassName = {\n SCROLLABLE : 'modal-dialog-scrollable',\n SCROLLBAR_MEASURER : 'modal-scrollbar-measure',\n BACKDROP : 'modal-backdrop',\n OPEN : 'modal-open',\n FADE : 'fade',\n SHOW : 'show'\n}\n\nconst Selector = {\n DIALOG : '.modal-dialog',\n MODAL_BODY : '.modal-body',\n DATA_TOGGLE : '[data-toggle=\"modal\"]',\n DATA_DISMISS : '[data-dismiss=\"modal\"]',\n FIXED_CONTENT : '.fixed-top, .fixed-bottom, .is-fixed, .sticky-top',\n STICKY_CONTENT : '.sticky-top'\n}\n\n/**\n * ------------------------------------------------------------------------\n * Class Definition\n * ------------------------------------------------------------------------\n */\n\nclass Modal {\n constructor(element, config) {\n this._config = this._getConfig(config)\n this._element = element\n this._dialog = element.querySelector(Selector.DIALOG)\n this._backdrop = null\n this._isShown = false\n this._isBodyOverflowing = false\n this._ignoreBackdropClick = false\n this._isTransitioning = false\n this._scrollbarWidth = 0\n }\n\n // Getters\n\n static get VERSION() {\n return VERSION\n }\n\n static get Default() {\n return Default\n }\n\n // Public\n\n toggle(relatedTarget) {\n return this._isShown ? this.hide() : this.show(relatedTarget)\n }\n\n show(relatedTarget) {\n if (this._isShown || this._isTransitioning) {\n return\n }\n\n if ($(this._element).hasClass(ClassName.FADE)) {\n this._isTransitioning = true\n }\n\n const showEvent = $.Event(Event.SHOW, {\n relatedTarget\n })\n\n $(this._element).trigger(showEvent)\n\n if (this._isShown || showEvent.isDefaultPrevented()) {\n return\n }\n\n this._isShown = true\n\n this._checkScrollbar()\n this._setScrollbar()\n\n this._adjustDialog()\n\n this._setEscapeEvent()\n this._setResizeEvent()\n\n $(this._element).on(\n Event.CLICK_DISMISS,\n Selector.DATA_DISMISS,\n (event) => this.hide(event)\n )\n\n $(this._dialog).on(Event.MOUSEDOWN_DISMISS, () => {\n $(this._element).one(Event.MOUSEUP_DISMISS, (event) => {\n if ($(event.target).is(this._element)) {\n this._ignoreBackdropClick = true\n }\n })\n })\n\n this._showBackdrop(() => this._showElement(relatedTarget))\n }\n\n hide(event) {\n if (event) {\n event.preventDefault()\n }\n\n if (!this._isShown || this._isTransitioning) {\n return\n }\n\n const hideEvent = $.Event(Event.HIDE)\n\n $(this._element).trigger(hideEvent)\n\n if (!this._isShown || hideEvent.isDefaultPrevented()) {\n return\n }\n\n this._isShown = false\n const transition = $(this._element).hasClass(ClassName.FADE)\n\n if (transition) {\n this._isTransitioning = true\n }\n\n this._setEscapeEvent()\n this._setResizeEvent()\n\n $(document).off(Event.FOCUSIN)\n\n $(this._element).removeClass(ClassName.SHOW)\n\n $(this._element).off(Event.CLICK_DISMISS)\n $(this._dialog).off(Event.MOUSEDOWN_DISMISS)\n\n\n if (transition) {\n const transitionDuration = Util.getTransitionDurationFromElement(this._element)\n\n $(this._element)\n .one(Util.TRANSITION_END, (event) => this._hideModal(event))\n .emulateTransitionEnd(transitionDuration)\n } else {\n this._hideModal()\n }\n }\n\n dispose() {\n [window, this._element, this._dialog]\n .forEach((htmlElement) => $(htmlElement).off(EVENT_KEY))\n\n /**\n * `document` has 2 events `Event.FOCUSIN` and `Event.CLICK_DATA_API`\n * Do not move `document` in `htmlElements` array\n * It will remove `Event.CLICK_DATA_API` event that should remain\n */\n $(document).off(Event.FOCUSIN)\n\n $.removeData(this._element, DATA_KEY)\n\n this._config = null\n this._element = null\n this._dialog = null\n this._backdrop = null\n this._isShown = null\n this._isBodyOverflowing = null\n this._ignoreBackdropClick = null\n this._isTransitioning = null\n this._scrollbarWidth = null\n }\n\n handleUpdate() {\n this._adjustDialog()\n }\n\n // Private\n\n _getConfig(config) {\n config = {\n ...Default,\n ...config\n }\n Util.typeCheckConfig(NAME, config, DefaultType)\n return config\n }\n\n _showElement(relatedTarget) {\n const transition = $(this._element).hasClass(ClassName.FADE)\n\n if (!this._element.parentNode ||\n this._element.parentNode.nodeType !== Node.ELEMENT_NODE) {\n // Don't move modal's DOM position\n document.body.appendChild(this._element)\n }\n\n this._element.style.display = 'block'\n this._element.removeAttribute('aria-hidden')\n this._element.setAttribute('aria-modal', true)\n\n if ($(this._dialog).hasClass(ClassName.SCROLLABLE)) {\n this._dialog.querySelector(Selector.MODAL_BODY).scrollTop = 0\n } else {\n this._element.scrollTop = 0\n }\n\n if (transition) {\n Util.reflow(this._element)\n }\n\n $(this._element).addClass(ClassName.SHOW)\n\n if (this._config.focus) {\n this._enforceFocus()\n }\n\n const shownEvent = $.Event(Event.SHOWN, {\n relatedTarget\n })\n\n const transitionComplete = () => {\n if (this._config.focus) {\n this._element.focus()\n }\n this._isTransitioning = false\n $(this._element).trigger(shownEvent)\n }\n\n if (transition) {\n const transitionDuration = Util.getTransitionDurationFromElement(this._dialog)\n\n $(this._dialog)\n .one(Util.TRANSITION_END, transitionComplete)\n .emulateTransitionEnd(transitionDuration)\n } else {\n transitionComplete()\n }\n }\n\n _enforceFocus() {\n $(document)\n .off(Event.FOCUSIN) // Guard against infinite focus loop\n .on(Event.FOCUSIN, (event) => {\n if (document !== event.target &&\n this._element !== event.target &&\n $(this._element).has(event.target).length === 0) {\n this._element.focus()\n }\n })\n }\n\n _setEscapeEvent() {\n if (this._isShown && this._config.keyboard) {\n $(this._element).on(Event.KEYDOWN_DISMISS, (event) => {\n if (event.which === ESCAPE_KEYCODE) {\n event.preventDefault()\n this.hide()\n }\n })\n } else if (!this._isShown) {\n $(this._element).off(Event.KEYDOWN_DISMISS)\n }\n }\n\n _setResizeEvent() {\n if (this._isShown) {\n $(window).on(Event.RESIZE, (event) => this.handleUpdate(event))\n } else {\n $(window).off(Event.RESIZE)\n }\n }\n\n _hideModal() {\n this._element.style.display = 'none'\n this._element.setAttribute('aria-hidden', true)\n this._element.removeAttribute('aria-modal')\n this._isTransitioning = false\n this._showBackdrop(() => {\n $(document.body).removeClass(ClassName.OPEN)\n this._resetAdjustments()\n this._resetScrollbar()\n $(this._element).trigger(Event.HIDDEN)\n })\n }\n\n _removeBackdrop() {\n if (this._backdrop) {\n $(this._backdrop).remove()\n this._backdrop = null\n }\n }\n\n _showBackdrop(callback) {\n const animate = $(this._element).hasClass(ClassName.FADE)\n ? ClassName.FADE : ''\n\n if (this._isShown && this._config.backdrop) {\n this._backdrop = document.createElement('div')\n this._backdrop.className = ClassName.BACKDROP\n\n if (animate) {\n this._backdrop.classList.add(animate)\n }\n\n $(this._backdrop).appendTo(document.body)\n\n $(this._element).on(Event.CLICK_DISMISS, (event) => {\n if (this._ignoreBackdropClick) {\n this._ignoreBackdropClick = false\n return\n }\n if (event.target !== event.currentTarget) {\n return\n }\n if (this._config.backdrop === 'static') {\n this._element.focus()\n } else {\n this.hide()\n }\n })\n\n if (animate) {\n Util.reflow(this._backdrop)\n }\n\n $(this._backdrop).addClass(ClassName.SHOW)\n\n if (!callback) {\n return\n }\n\n if (!animate) {\n callback()\n return\n }\n\n const backdropTransitionDuration = Util.getTransitionDurationFromElement(this._backdrop)\n\n $(this._backdrop)\n .one(Util.TRANSITION_END, callback)\n .emulateTransitionEnd(backdropTransitionDuration)\n } else if (!this._isShown && this._backdrop) {\n $(this._backdrop).removeClass(ClassName.SHOW)\n\n const callbackRemove = () => {\n this._removeBackdrop()\n if (callback) {\n callback()\n }\n }\n\n if ($(this._element).hasClass(ClassName.FADE)) {\n const backdropTransitionDuration = Util.getTransitionDurationFromElement(this._backdrop)\n\n $(this._backdrop)\n .one(Util.TRANSITION_END, callbackRemove)\n .emulateTransitionEnd(backdropTransitionDuration)\n } else {\n callbackRemove()\n }\n } else if (callback) {\n callback()\n }\n }\n\n // ----------------------------------------------------------------------\n // the following methods are used to handle overflowing modals\n // todo (fat): these should probably be refactored out of modal.js\n // ----------------------------------------------------------------------\n\n _adjustDialog() {\n const isModalOverflowing =\n this._element.scrollHeight > document.documentElement.clientHeight\n\n if (!this._isBodyOverflowing && isModalOverflowing) {\n this._element.style.paddingLeft = `${this._scrollbarWidth}px`\n }\n\n if (this._isBodyOverflowing && !isModalOverflowing) {\n this._element.style.paddingRight = `${this._scrollbarWidth}px`\n }\n }\n\n _resetAdjustments() {\n this._element.style.paddingLeft = ''\n this._element.style.paddingRight = ''\n }\n\n _checkScrollbar() {\n const rect = document.body.getBoundingClientRect()\n this._isBodyOverflowing = rect.left + rect.right < window.innerWidth\n this._scrollbarWidth = this._getScrollbarWidth()\n }\n\n _setScrollbar() {\n if (this._isBodyOverflowing) {\n // Note: DOMNode.style.paddingRight returns the actual value or '' if not set\n // while $(DOMNode).css('padding-right') returns the calculated value or 0 if not set\n const fixedContent = [].slice.call(document.querySelectorAll(Selector.FIXED_CONTENT))\n const stickyContent = [].slice.call(document.querySelectorAll(Selector.STICKY_CONTENT))\n\n // Adjust fixed content padding\n $(fixedContent).each((index, element) => {\n const actualPadding = element.style.paddingRight\n const calculatedPadding = $(element).css('padding-right')\n $(element)\n .data('padding-right', actualPadding)\n .css('padding-right', `${parseFloat(calculatedPadding) + this._scrollbarWidth}px`)\n })\n\n // Adjust sticky content margin\n $(stickyContent).each((index, element) => {\n const actualMargin = element.style.marginRight\n const calculatedMargin = $(element).css('margin-right')\n $(element)\n .data('margin-right', actualMargin)\n .css('margin-right', `${parseFloat(calculatedMargin) - this._scrollbarWidth}px`)\n })\n\n // Adjust body padding\n const actualPadding = document.body.style.paddingRight\n const calculatedPadding = $(document.body).css('padding-right')\n $(document.body)\n .data('padding-right', actualPadding)\n .css('padding-right', `${parseFloat(calculatedPadding) + this._scrollbarWidth}px`)\n }\n\n $(document.body).addClass(ClassName.OPEN)\n }\n\n _resetScrollbar() {\n // Restore fixed content padding\n const fixedContent = [].slice.call(document.querySelectorAll(Selector.FIXED_CONTENT))\n $(fixedContent).each((index, element) => {\n const padding = $(element).data('padding-right')\n $(element).removeData('padding-right')\n element.style.paddingRight = padding ? padding : ''\n })\n\n // Restore sticky content\n const elements = [].slice.call(document.querySelectorAll(`${Selector.STICKY_CONTENT}`))\n $(elements).each((index, element) => {\n const margin = $(element).data('margin-right')\n if (typeof margin !== 'undefined') {\n $(element).css('margin-right', margin).removeData('margin-right')\n }\n })\n\n // Restore body padding\n const padding = $(document.body).data('padding-right')\n $(document.body).removeData('padding-right')\n document.body.style.paddingRight = padding ? padding : ''\n }\n\n _getScrollbarWidth() { // thx d.walsh\n const scrollDiv = document.createElement('div')\n scrollDiv.className = ClassName.SCROLLBAR_MEASURER\n document.body.appendChild(scrollDiv)\n const scrollbarWidth = scrollDiv.getBoundingClientRect().width - scrollDiv.clientWidth\n document.body.removeChild(scrollDiv)\n return scrollbarWidth\n }\n\n // Static\n\n static _jQueryInterface(config, relatedTarget) {\n return this.each(function () {\n let data = $(this).data(DATA_KEY)\n const _config = {\n ...Default,\n ...$(this).data(),\n ...typeof config === 'object' && config ? config : {}\n }\n\n if (!data) {\n data = new Modal(this, _config)\n $(this).data(DATA_KEY, data)\n }\n\n if (typeof config === 'string') {\n if (typeof data[config] === 'undefined') {\n throw new TypeError(`No method named \"${config}\"`)\n }\n data[config](relatedTarget)\n } else if (_config.show) {\n data.show(relatedTarget)\n }\n })\n }\n}\n\n/**\n * ------------------------------------------------------------------------\n * Data Api implementation\n * ------------------------------------------------------------------------\n */\n\n$(document).on(Event.CLICK_DATA_API, Selector.DATA_TOGGLE, function (event) {\n let target\n const selector = Util.getSelectorFromElement(this)\n\n if (selector) {\n target = document.querySelector(selector)\n }\n\n const config = $(target).data(DATA_KEY)\n ? 'toggle' : {\n ...$(target).data(),\n ...$(this).data()\n }\n\n if (this.tagName === 'A' || this.tagName === 'AREA') {\n event.preventDefault()\n }\n\n const $target = $(target).one(Event.SHOW, (showEvent) => {\n if (showEvent.isDefaultPrevented()) {\n // Only register focus restorer if modal will actually get shown\n return\n }\n\n $target.one(Event.HIDDEN, () => {\n if ($(this).is(':visible')) {\n this.focus()\n }\n })\n })\n\n Modal._jQueryInterface.call($(target), config, this)\n})\n\n/**\n * ------------------------------------------------------------------------\n * jQuery\n * ------------------------------------------------------------------------\n */\n\n$.fn[NAME] = Modal._jQueryInterface\n$.fn[NAME].Constructor = Modal\n$.fn[NAME].noConflict = () => {\n $.fn[NAME] = JQUERY_NO_CONFLICT\n return Modal._jQueryInterface\n}\n\nexport default Modal\n","/**\n * --------------------------------------------------------------------------\n * Bootstrap (v4.3.1): tools/sanitizer.js\n * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)\n * --------------------------------------------------------------------------\n */\n\nconst uriAttrs = [\n 'background',\n 'cite',\n 'href',\n 'itemtype',\n 'longdesc',\n 'poster',\n 'src',\n 'xlink:href'\n]\n\nconst ARIA_ATTRIBUTE_PATTERN = /^aria-[\\w-]*$/i\n\nexport const DefaultWhitelist = {\n // Global attributes allowed on any supplied element below.\n '*': ['class', 'dir', 'id', 'lang', 'role', ARIA_ATTRIBUTE_PATTERN],\n a: ['target', 'href', 'title', 'rel'],\n area: [],\n b: [],\n br: [],\n col: [],\n code: [],\n div: [],\n em: [],\n hr: [],\n h1: [],\n h2: [],\n h3: [],\n h4: [],\n h5: [],\n h6: [],\n i: [],\n img: ['src', 'alt', 'title', 'width', 'height'],\n li: [],\n ol: [],\n p: [],\n pre: [],\n s: [],\n small: [],\n span: [],\n sub: [],\n sup: [],\n strong: [],\n u: [],\n ul: []\n}\n\n/**\n * A pattern that recognizes a commonly useful subset of URLs that are safe.\n *\n * Shoutout to Angular 7 https://github.com/angular/angular/blob/7.2.4/packages/core/src/sanitization/url_sanitizer.ts\n */\nconst SAFE_URL_PATTERN = /^(?:(?:https?|mailto|ftp|tel|file):|[^&:/?#]*(?:[/?#]|$))/gi\n\n/**\n * A pattern that matches safe data URLs. Only matches image, video and audio types.\n *\n * Shoutout to Angular 7 https://github.com/angular/angular/blob/7.2.4/packages/core/src/sanitization/url_sanitizer.ts\n */\nconst DATA_URL_PATTERN = /^data:(?:image\\/(?:bmp|gif|jpeg|jpg|png|tiff|webp)|video\\/(?:mpeg|mp4|ogg|webm)|audio\\/(?:mp3|oga|ogg|opus));base64,[a-z0-9+/]+=*$/i\n\nfunction allowedAttribute(attr, allowedAttributeList) {\n const attrName = attr.nodeName.toLowerCase()\n\n if (allowedAttributeList.indexOf(attrName) !== -1) {\n if (uriAttrs.indexOf(attrName) !== -1) {\n return Boolean(attr.nodeValue.match(SAFE_URL_PATTERN) || attr.nodeValue.match(DATA_URL_PATTERN))\n }\n\n return true\n }\n\n const regExp = allowedAttributeList.filter((attrRegex) => attrRegex instanceof RegExp)\n\n // Check if a regular expression validates the attribute.\n for (let i = 0, l = regExp.length; i < l; i++) {\n if (attrName.match(regExp[i])) {\n return true\n }\n }\n\n return false\n}\n\nexport function sanitizeHtml(unsafeHtml, whiteList, sanitizeFn) {\n if (unsafeHtml.length === 0) {\n return unsafeHtml\n }\n\n if (sanitizeFn && typeof sanitizeFn === 'function') {\n return sanitizeFn(unsafeHtml)\n }\n\n const domParser = new window.DOMParser()\n const createdDocument = domParser.parseFromString(unsafeHtml, 'text/html')\n const whitelistKeys = Object.keys(whiteList)\n const elements = [].slice.call(createdDocument.body.querySelectorAll('*'))\n\n for (let i = 0, len = elements.length; i < len; i++) {\n const el = elements[i]\n const elName = el.nodeName.toLowerCase()\n\n if (whitelistKeys.indexOf(el.nodeName.toLowerCase()) === -1) {\n el.parentNode.removeChild(el)\n\n continue\n }\n\n const attributeList = [].slice.call(el.attributes)\n const whitelistedAttributes = [].concat(whiteList['*'] || [], whiteList[elName] || [])\n\n attributeList.forEach((attr) => {\n if (!allowedAttribute(attr, whitelistedAttributes)) {\n el.removeAttribute(attr.nodeName)\n }\n })\n }\n\n return createdDocument.body.innerHTML\n}\n","/**\n * --------------------------------------------------------------------------\n * Bootstrap (v4.3.1): tooltip.js\n * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)\n * --------------------------------------------------------------------------\n */\n\nimport {\n DefaultWhitelist,\n sanitizeHtml\n} from './tools/sanitizer'\nimport $ from 'jquery'\nimport Popper from 'popper.js'\nimport Util from './util'\n\n/**\n * ------------------------------------------------------------------------\n * Constants\n * ------------------------------------------------------------------------\n */\n\nconst NAME = 'tooltip'\nconst VERSION = '4.3.1'\nconst DATA_KEY = 'bs.tooltip'\nconst EVENT_KEY = `.${DATA_KEY}`\nconst JQUERY_NO_CONFLICT = $.fn[NAME]\nconst CLASS_PREFIX = 'bs-tooltip'\nconst BSCLS_PREFIX_REGEX = new RegExp(`(^|\\\\s)${CLASS_PREFIX}\\\\S+`, 'g')\nconst DISALLOWED_ATTRIBUTES = ['sanitize', 'whiteList', 'sanitizeFn']\n\nconst DefaultType = {\n animation : 'boolean',\n template : 'string',\n title : '(string|element|function)',\n trigger : 'string',\n delay : '(number|object)',\n html : 'boolean',\n selector : '(string|boolean)',\n placement : '(string|function)',\n offset : '(number|string|function)',\n container : '(string|element|boolean)',\n fallbackPlacement : '(string|array)',\n boundary : '(string|element)',\n sanitize : 'boolean',\n sanitizeFn : '(null|function)',\n whiteList : 'object'\n}\n\nconst AttachmentMap = {\n AUTO : 'auto',\n TOP : 'top',\n RIGHT : 'right',\n BOTTOM : 'bottom',\n LEFT : 'left'\n}\n\nconst Default = {\n animation : true,\n template : '
    ' +\n '
    ' +\n '
    ',\n trigger : 'hover focus',\n title : '',\n delay : 0,\n html : false,\n selector : false,\n placement : 'top',\n offset : 0,\n container : false,\n fallbackPlacement : 'flip',\n boundary : 'scrollParent',\n sanitize : true,\n sanitizeFn : null,\n whiteList : DefaultWhitelist\n}\n\nconst HoverState = {\n SHOW : 'show',\n OUT : 'out'\n}\n\nconst Event = {\n HIDE : `hide${EVENT_KEY}`,\n HIDDEN : `hidden${EVENT_KEY}`,\n SHOW : `show${EVENT_KEY}`,\n SHOWN : `shown${EVENT_KEY}`,\n INSERTED : `inserted${EVENT_KEY}`,\n CLICK : `click${EVENT_KEY}`,\n FOCUSIN : `focusin${EVENT_KEY}`,\n FOCUSOUT : `focusout${EVENT_KEY}`,\n MOUSEENTER : `mouseenter${EVENT_KEY}`,\n MOUSELEAVE : `mouseleave${EVENT_KEY}`\n}\n\nconst ClassName = {\n FADE : 'fade',\n SHOW : 'show'\n}\n\nconst Selector = {\n TOOLTIP : '.tooltip',\n TOOLTIP_INNER : '.tooltip-inner',\n ARROW : '.arrow'\n}\n\nconst Trigger = {\n HOVER : 'hover',\n FOCUS : 'focus',\n CLICK : 'click',\n MANUAL : 'manual'\n}\n\n\n/**\n * ------------------------------------------------------------------------\n * Class Definition\n * ------------------------------------------------------------------------\n */\n\nclass Tooltip {\n constructor(element, config) {\n /**\n * Check for Popper dependency\n * Popper - https://popper.js.org\n */\n if (typeof Popper === 'undefined') {\n throw new TypeError('Bootstrap\\'s tooltips require Popper.js (https://popper.js.org/)')\n }\n\n // private\n this._isEnabled = true\n this._timeout = 0\n this._hoverState = ''\n this._activeTrigger = {}\n this._popper = null\n\n // Protected\n this.element = element\n this.config = this._getConfig(config)\n this.tip = null\n\n this._setListeners()\n }\n\n // Getters\n\n static get VERSION() {\n return VERSION\n }\n\n static get Default() {\n return Default\n }\n\n static get NAME() {\n return NAME\n }\n\n static get DATA_KEY() {\n return DATA_KEY\n }\n\n static get Event() {\n return Event\n }\n\n static get EVENT_KEY() {\n return EVENT_KEY\n }\n\n static get DefaultType() {\n return DefaultType\n }\n\n // Public\n\n enable() {\n this._isEnabled = true\n }\n\n disable() {\n this._isEnabled = false\n }\n\n toggleEnabled() {\n this._isEnabled = !this._isEnabled\n }\n\n toggle(event) {\n if (!this._isEnabled) {\n return\n }\n\n if (event) {\n const dataKey = this.constructor.DATA_KEY\n let context = $(event.currentTarget).data(dataKey)\n\n if (!context) {\n context = new this.constructor(\n event.currentTarget,\n this._getDelegateConfig()\n )\n $(event.currentTarget).data(dataKey, context)\n }\n\n context._activeTrigger.click = !context._activeTrigger.click\n\n if (context._isWithActiveTrigger()) {\n context._enter(null, context)\n } else {\n context._leave(null, context)\n }\n } else {\n if ($(this.getTipElement()).hasClass(ClassName.SHOW)) {\n this._leave(null, this)\n return\n }\n\n this._enter(null, this)\n }\n }\n\n dispose() {\n clearTimeout(this._timeout)\n\n $.removeData(this.element, this.constructor.DATA_KEY)\n\n $(this.element).off(this.constructor.EVENT_KEY)\n $(this.element).closest('.modal').off('hide.bs.modal')\n\n if (this.tip) {\n $(this.tip).remove()\n }\n\n this._isEnabled = null\n this._timeout = null\n this._hoverState = null\n this._activeTrigger = null\n if (this._popper !== null) {\n this._popper.destroy()\n }\n\n this._popper = null\n this.element = null\n this.config = null\n this.tip = null\n }\n\n show() {\n if ($(this.element).css('display') === 'none') {\n throw new Error('Please use show on visible elements')\n }\n\n const showEvent = $.Event(this.constructor.Event.SHOW)\n if (this.isWithContent() && this._isEnabled) {\n $(this.element).trigger(showEvent)\n\n const shadowRoot = Util.findShadowRoot(this.element)\n const isInTheDom = $.contains(\n shadowRoot !== null ? shadowRoot : this.element.ownerDocument.documentElement,\n this.element\n )\n\n if (showEvent.isDefaultPrevented() || !isInTheDom) {\n return\n }\n\n const tip = this.getTipElement()\n const tipId = Util.getUID(this.constructor.NAME)\n\n tip.setAttribute('id', tipId)\n this.element.setAttribute('aria-describedby', tipId)\n\n this.setContent()\n\n if (this.config.animation) {\n $(tip).addClass(ClassName.FADE)\n }\n\n const placement = typeof this.config.placement === 'function'\n ? this.config.placement.call(this, tip, this.element)\n : this.config.placement\n\n const attachment = this._getAttachment(placement)\n this.addAttachmentClass(attachment)\n\n const container = this._getContainer()\n $(tip).data(this.constructor.DATA_KEY, this)\n\n if (!$.contains(this.element.ownerDocument.documentElement, this.tip)) {\n $(tip).appendTo(container)\n }\n\n $(this.element).trigger(this.constructor.Event.INSERTED)\n\n this._popper = new Popper(this.element, tip, {\n placement: attachment,\n modifiers: {\n offset: this._getOffset(),\n flip: {\n behavior: this.config.fallbackPlacement\n },\n arrow: {\n element: Selector.ARROW\n },\n preventOverflow: {\n boundariesElement: this.config.boundary\n }\n },\n onCreate: (data) => {\n if (data.originalPlacement !== data.placement) {\n this._handlePopperPlacementChange(data)\n }\n },\n onUpdate: (data) => this._handlePopperPlacementChange(data)\n })\n\n $(tip).addClass(ClassName.SHOW)\n\n // If this is a touch-enabled device we add extra\n // empty mouseover listeners to the body's immediate children;\n // only needed because of broken event delegation on iOS\n // https://www.quirksmode.org/blog/archives/2014/02/mouse_event_bub.html\n if ('ontouchstart' in document.documentElement) {\n $(document.body).children().on('mouseover', null, $.noop)\n }\n\n const complete = () => {\n if (this.config.animation) {\n this._fixTransition()\n }\n const prevHoverState = this._hoverState\n this._hoverState = null\n\n $(this.element).trigger(this.constructor.Event.SHOWN)\n\n if (prevHoverState === HoverState.OUT) {\n this._leave(null, this)\n }\n }\n\n if ($(this.tip).hasClass(ClassName.FADE)) {\n const transitionDuration = Util.getTransitionDurationFromElement(this.tip)\n\n $(this.tip)\n .one(Util.TRANSITION_END, complete)\n .emulateTransitionEnd(transitionDuration)\n } else {\n complete()\n }\n }\n }\n\n hide(callback) {\n const tip = this.getTipElement()\n const hideEvent = $.Event(this.constructor.Event.HIDE)\n const complete = () => {\n if (this._hoverState !== HoverState.SHOW && tip.parentNode) {\n tip.parentNode.removeChild(tip)\n }\n\n this._cleanTipClass()\n this.element.removeAttribute('aria-describedby')\n $(this.element).trigger(this.constructor.Event.HIDDEN)\n if (this._popper !== null) {\n this._popper.destroy()\n }\n\n if (callback) {\n callback()\n }\n }\n\n $(this.element).trigger(hideEvent)\n\n if (hideEvent.isDefaultPrevented()) {\n return\n }\n\n $(tip).removeClass(ClassName.SHOW)\n\n // If this is a touch-enabled device we remove the extra\n // empty mouseover listeners we added for iOS support\n if ('ontouchstart' in document.documentElement) {\n $(document.body).children().off('mouseover', null, $.noop)\n }\n\n this._activeTrigger[Trigger.CLICK] = false\n this._activeTrigger[Trigger.FOCUS] = false\n this._activeTrigger[Trigger.HOVER] = false\n\n if ($(this.tip).hasClass(ClassName.FADE)) {\n const transitionDuration = Util.getTransitionDurationFromElement(tip)\n\n $(tip)\n .one(Util.TRANSITION_END, complete)\n .emulateTransitionEnd(transitionDuration)\n } else {\n complete()\n }\n\n this._hoverState = ''\n }\n\n update() {\n if (this._popper !== null) {\n this._popper.scheduleUpdate()\n }\n }\n\n // Protected\n\n isWithContent() {\n return Boolean(this.getTitle())\n }\n\n addAttachmentClass(attachment) {\n $(this.getTipElement()).addClass(`${CLASS_PREFIX}-${attachment}`)\n }\n\n getTipElement() {\n this.tip = this.tip || $(this.config.template)[0]\n return this.tip\n }\n\n setContent() {\n const tip = this.getTipElement()\n this.setElementContent($(tip.querySelectorAll(Selector.TOOLTIP_INNER)), this.getTitle())\n $(tip).removeClass(`${ClassName.FADE} ${ClassName.SHOW}`)\n }\n\n setElementContent($element, content) {\n if (typeof content === 'object' && (content.nodeType || content.jquery)) {\n // Content is a DOM node or a jQuery\n if (this.config.html) {\n if (!$(content).parent().is($element)) {\n $element.empty().append(content)\n }\n } else {\n $element.text($(content).text())\n }\n\n return\n }\n\n if (this.config.html) {\n if (this.config.sanitize) {\n content = sanitizeHtml(content, this.config.whiteList, this.config.sanitizeFn)\n }\n\n $element.html(content)\n } else {\n $element.text(content)\n }\n }\n\n getTitle() {\n let title = this.element.getAttribute('data-original-title')\n\n if (!title) {\n title = typeof this.config.title === 'function'\n ? this.config.title.call(this.element)\n : this.config.title\n }\n\n return title\n }\n\n // Private\n\n _getOffset() {\n const offset = {}\n\n if (typeof this.config.offset === 'function') {\n offset.fn = (data) => {\n data.offsets = {\n ...data.offsets,\n ...this.config.offset(data.offsets, this.element) || {}\n }\n\n return data\n }\n } else {\n offset.offset = this.config.offset\n }\n\n return offset\n }\n\n _getContainer() {\n if (this.config.container === false) {\n return document.body\n }\n\n if (Util.isElement(this.config.container)) {\n return $(this.config.container)\n }\n\n return $(document).find(this.config.container)\n }\n\n _getAttachment(placement) {\n return AttachmentMap[placement.toUpperCase()]\n }\n\n _setListeners() {\n const triggers = this.config.trigger.split(' ')\n\n triggers.forEach((trigger) => {\n if (trigger === 'click') {\n $(this.element).on(\n this.constructor.Event.CLICK,\n this.config.selector,\n (event) => this.toggle(event)\n )\n } else if (trigger !== Trigger.MANUAL) {\n const eventIn = trigger === Trigger.HOVER\n ? this.constructor.Event.MOUSEENTER\n : this.constructor.Event.FOCUSIN\n const eventOut = trigger === Trigger.HOVER\n ? this.constructor.Event.MOUSELEAVE\n : this.constructor.Event.FOCUSOUT\n\n $(this.element)\n .on(\n eventIn,\n this.config.selector,\n (event) => this._enter(event)\n )\n .on(\n eventOut,\n this.config.selector,\n (event) => this._leave(event)\n )\n }\n })\n\n $(this.element).closest('.modal').on(\n 'hide.bs.modal',\n () => {\n if (this.element) {\n this.hide()\n }\n }\n )\n\n if (this.config.selector) {\n this.config = {\n ...this.config,\n trigger: 'manual',\n selector: ''\n }\n } else {\n this._fixTitle()\n }\n }\n\n _fixTitle() {\n const titleType = typeof this.element.getAttribute('data-original-title')\n\n if (this.element.getAttribute('title') || titleType !== 'string') {\n this.element.setAttribute(\n 'data-original-title',\n this.element.getAttribute('title') || ''\n )\n\n this.element.setAttribute('title', '')\n }\n }\n\n _enter(event, context) {\n const dataKey = this.constructor.DATA_KEY\n context = context || $(event.currentTarget).data(dataKey)\n\n if (!context) {\n context = new this.constructor(\n event.currentTarget,\n this._getDelegateConfig()\n )\n $(event.currentTarget).data(dataKey, context)\n }\n\n if (event) {\n context._activeTrigger[\n event.type === 'focusin' ? Trigger.FOCUS : Trigger.HOVER\n ] = true\n }\n\n if ($(context.getTipElement()).hasClass(ClassName.SHOW) || context._hoverState === HoverState.SHOW) {\n context._hoverState = HoverState.SHOW\n return\n }\n\n clearTimeout(context._timeout)\n\n context._hoverState = HoverState.SHOW\n\n if (!context.config.delay || !context.config.delay.show) {\n context.show()\n return\n }\n\n context._timeout = setTimeout(() => {\n if (context._hoverState === HoverState.SHOW) {\n context.show()\n }\n }, context.config.delay.show)\n }\n\n _leave(event, context) {\n const dataKey = this.constructor.DATA_KEY\n context = context || $(event.currentTarget).data(dataKey)\n\n if (!context) {\n context = new this.constructor(\n event.currentTarget,\n this._getDelegateConfig()\n )\n $(event.currentTarget).data(dataKey, context)\n }\n\n if (event) {\n context._activeTrigger[\n event.type === 'focusout' ? Trigger.FOCUS : Trigger.HOVER\n ] = false\n }\n\n if (context._isWithActiveTrigger()) {\n return\n }\n\n clearTimeout(context._timeout)\n\n context._hoverState = HoverState.OUT\n\n if (!context.config.delay || !context.config.delay.hide) {\n context.hide()\n return\n }\n\n context._timeout = setTimeout(() => {\n if (context._hoverState === HoverState.OUT) {\n context.hide()\n }\n }, context.config.delay.hide)\n }\n\n _isWithActiveTrigger() {\n for (const trigger in this._activeTrigger) {\n if (this._activeTrigger[trigger]) {\n return true\n }\n }\n\n return false\n }\n\n _getConfig(config) {\n const dataAttributes = $(this.element).data()\n\n Object.keys(dataAttributes)\n .forEach((dataAttr) => {\n if (DISALLOWED_ATTRIBUTES.indexOf(dataAttr) !== -1) {\n delete dataAttributes[dataAttr]\n }\n })\n\n config = {\n ...this.constructor.Default,\n ...dataAttributes,\n ...typeof config === 'object' && config ? config : {}\n }\n\n if (typeof config.delay === 'number') {\n config.delay = {\n show: config.delay,\n hide: config.delay\n }\n }\n\n if (typeof config.title === 'number') {\n config.title = config.title.toString()\n }\n\n if (typeof config.content === 'number') {\n config.content = config.content.toString()\n }\n\n Util.typeCheckConfig(\n NAME,\n config,\n this.constructor.DefaultType\n )\n\n if (config.sanitize) {\n config.template = sanitizeHtml(config.template, config.whiteList, config.sanitizeFn)\n }\n\n return config\n }\n\n _getDelegateConfig() {\n const config = {}\n\n if (this.config) {\n for (const key in this.config) {\n if (this.constructor.Default[key] !== this.config[key]) {\n config[key] = this.config[key]\n }\n }\n }\n\n return config\n }\n\n _cleanTipClass() {\n const $tip = $(this.getTipElement())\n const tabClass = $tip.attr('class').match(BSCLS_PREFIX_REGEX)\n if (tabClass !== null && tabClass.length) {\n $tip.removeClass(tabClass.join(''))\n }\n }\n\n _handlePopperPlacementChange(popperData) {\n const popperInstance = popperData.instance\n this.tip = popperInstance.popper\n this._cleanTipClass()\n this.addAttachmentClass(this._getAttachment(popperData.placement))\n }\n\n _fixTransition() {\n const tip = this.getTipElement()\n const initConfigAnimation = this.config.animation\n\n if (tip.getAttribute('x-placement') !== null) {\n return\n }\n\n $(tip).removeClass(ClassName.FADE)\n this.config.animation = false\n this.hide()\n this.show()\n this.config.animation = initConfigAnimation\n }\n\n // Static\n\n static _jQueryInterface(config) {\n return this.each(function () {\n let data = $(this).data(DATA_KEY)\n const _config = typeof config === 'object' && config\n\n if (!data && /dispose|hide/.test(config)) {\n return\n }\n\n if (!data) {\n data = new Tooltip(this, _config)\n $(this).data(DATA_KEY, data)\n }\n\n if (typeof config === 'string') {\n if (typeof data[config] === 'undefined') {\n throw new TypeError(`No method named \"${config}\"`)\n }\n data[config]()\n }\n })\n }\n}\n\n/**\n * ------------------------------------------------------------------------\n * jQuery\n * ------------------------------------------------------------------------\n */\n\n$.fn[NAME] = Tooltip._jQueryInterface\n$.fn[NAME].Constructor = Tooltip\n$.fn[NAME].noConflict = () => {\n $.fn[NAME] = JQUERY_NO_CONFLICT\n return Tooltip._jQueryInterface\n}\n\nexport default Tooltip\n","/**\n * --------------------------------------------------------------------------\n * Bootstrap (v4.3.1): popover.js\n * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)\n * --------------------------------------------------------------------------\n */\n\nimport $ from 'jquery'\nimport Tooltip from './tooltip'\n\n/**\n * ------------------------------------------------------------------------\n * Constants\n * ------------------------------------------------------------------------\n */\n\nconst NAME = 'popover'\nconst VERSION = '4.3.1'\nconst DATA_KEY = 'bs.popover'\nconst EVENT_KEY = `.${DATA_KEY}`\nconst JQUERY_NO_CONFLICT = $.fn[NAME]\nconst CLASS_PREFIX = 'bs-popover'\nconst BSCLS_PREFIX_REGEX = new RegExp(`(^|\\\\s)${CLASS_PREFIX}\\\\S+`, 'g')\n\nconst Default = {\n ...Tooltip.Default,\n placement : 'right',\n trigger : 'click',\n content : '',\n template : '
    ' +\n '
    ' +\n '

    ' +\n '
    '\n}\n\nconst DefaultType = {\n ...Tooltip.DefaultType,\n content : '(string|element|function)'\n}\n\nconst ClassName = {\n FADE : 'fade',\n SHOW : 'show'\n}\n\nconst Selector = {\n TITLE : '.popover-header',\n CONTENT : '.popover-body'\n}\n\nconst Event = {\n HIDE : `hide${EVENT_KEY}`,\n HIDDEN : `hidden${EVENT_KEY}`,\n SHOW : `show${EVENT_KEY}`,\n SHOWN : `shown${EVENT_KEY}`,\n INSERTED : `inserted${EVENT_KEY}`,\n CLICK : `click${EVENT_KEY}`,\n FOCUSIN : `focusin${EVENT_KEY}`,\n FOCUSOUT : `focusout${EVENT_KEY}`,\n MOUSEENTER : `mouseenter${EVENT_KEY}`,\n MOUSELEAVE : `mouseleave${EVENT_KEY}`\n}\n\n/**\n * ------------------------------------------------------------------------\n * Class Definition\n * ------------------------------------------------------------------------\n */\n\nclass Popover extends Tooltip {\n // Getters\n\n static get VERSION() {\n return VERSION\n }\n\n static get Default() {\n return Default\n }\n\n static get NAME() {\n return NAME\n }\n\n static get DATA_KEY() {\n return DATA_KEY\n }\n\n static get Event() {\n return Event\n }\n\n static get EVENT_KEY() {\n return EVENT_KEY\n }\n\n static get DefaultType() {\n return DefaultType\n }\n\n // Overrides\n\n isWithContent() {\n return this.getTitle() || this._getContent()\n }\n\n addAttachmentClass(attachment) {\n $(this.getTipElement()).addClass(`${CLASS_PREFIX}-${attachment}`)\n }\n\n getTipElement() {\n this.tip = this.tip || $(this.config.template)[0]\n return this.tip\n }\n\n setContent() {\n const $tip = $(this.getTipElement())\n\n // We use append for html objects to maintain js events\n this.setElementContent($tip.find(Selector.TITLE), this.getTitle())\n let content = this._getContent()\n if (typeof content === 'function') {\n content = content.call(this.element)\n }\n this.setElementContent($tip.find(Selector.CONTENT), content)\n\n $tip.removeClass(`${ClassName.FADE} ${ClassName.SHOW}`)\n }\n\n // Private\n\n _getContent() {\n return this.element.getAttribute('data-content') ||\n this.config.content\n }\n\n _cleanTipClass() {\n const $tip = $(this.getTipElement())\n const tabClass = $tip.attr('class').match(BSCLS_PREFIX_REGEX)\n if (tabClass !== null && tabClass.length > 0) {\n $tip.removeClass(tabClass.join(''))\n }\n }\n\n // Static\n\n static _jQueryInterface(config) {\n return this.each(function () {\n let data = $(this).data(DATA_KEY)\n const _config = typeof config === 'object' ? config : null\n\n if (!data && /dispose|hide/.test(config)) {\n return\n }\n\n if (!data) {\n data = new Popover(this, _config)\n $(this).data(DATA_KEY, data)\n }\n\n if (typeof config === 'string') {\n if (typeof data[config] === 'undefined') {\n throw new TypeError(`No method named \"${config}\"`)\n }\n data[config]()\n }\n })\n }\n}\n\n/**\n * ------------------------------------------------------------------------\n * jQuery\n * ------------------------------------------------------------------------\n */\n\n$.fn[NAME] = Popover._jQueryInterface\n$.fn[NAME].Constructor = Popover\n$.fn[NAME].noConflict = () => {\n $.fn[NAME] = JQUERY_NO_CONFLICT\n return Popover._jQueryInterface\n}\n\nexport default Popover\n","/**\n * --------------------------------------------------------------------------\n * Bootstrap (v4.3.1): scrollspy.js\n * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)\n * --------------------------------------------------------------------------\n */\n\nimport $ from 'jquery'\nimport Util from './util'\n\n/**\n * ------------------------------------------------------------------------\n * Constants\n * ------------------------------------------------------------------------\n */\n\nconst NAME = 'scrollspy'\nconst VERSION = '4.3.1'\nconst DATA_KEY = 'bs.scrollspy'\nconst EVENT_KEY = `.${DATA_KEY}`\nconst DATA_API_KEY = '.data-api'\nconst JQUERY_NO_CONFLICT = $.fn[NAME]\n\nconst Default = {\n offset : 10,\n method : 'auto',\n target : ''\n}\n\nconst DefaultType = {\n offset : 'number',\n method : 'string',\n target : '(string|element)'\n}\n\nconst Event = {\n ACTIVATE : `activate${EVENT_KEY}`,\n SCROLL : `scroll${EVENT_KEY}`,\n LOAD_DATA_API : `load${EVENT_KEY}${DATA_API_KEY}`\n}\n\nconst ClassName = {\n DROPDOWN_ITEM : 'dropdown-item',\n DROPDOWN_MENU : 'dropdown-menu',\n ACTIVE : 'active'\n}\n\nconst Selector = {\n DATA_SPY : '[data-spy=\"scroll\"]',\n ACTIVE : '.active',\n NAV_LIST_GROUP : '.nav, .list-group',\n NAV_LINKS : '.nav-link',\n NAV_ITEMS : '.nav-item',\n LIST_ITEMS : '.list-group-item',\n DROPDOWN : '.dropdown',\n DROPDOWN_ITEMS : '.dropdown-item',\n DROPDOWN_TOGGLE : '.dropdown-toggle'\n}\n\nconst OffsetMethod = {\n OFFSET : 'offset',\n POSITION : 'position'\n}\n\n/**\n * ------------------------------------------------------------------------\n * Class Definition\n * ------------------------------------------------------------------------\n */\n\nclass ScrollSpy {\n constructor(element, config) {\n this._element = element\n this._scrollElement = element.tagName === 'BODY' ? window : element\n this._config = this._getConfig(config)\n this._selector = `${this._config.target} ${Selector.NAV_LINKS},` +\n `${this._config.target} ${Selector.LIST_ITEMS},` +\n `${this._config.target} ${Selector.DROPDOWN_ITEMS}`\n this._offsets = []\n this._targets = []\n this._activeTarget = null\n this._scrollHeight = 0\n\n $(this._scrollElement).on(Event.SCROLL, (event) => this._process(event))\n\n this.refresh()\n this._process()\n }\n\n // Getters\n\n static get VERSION() {\n return VERSION\n }\n\n static get Default() {\n return Default\n }\n\n // Public\n\n refresh() {\n const autoMethod = this._scrollElement === this._scrollElement.window\n ? OffsetMethod.OFFSET : OffsetMethod.POSITION\n\n const offsetMethod = this._config.method === 'auto'\n ? autoMethod : this._config.method\n\n const offsetBase = offsetMethod === OffsetMethod.POSITION\n ? this._getScrollTop() : 0\n\n this._offsets = []\n this._targets = []\n\n this._scrollHeight = this._getScrollHeight()\n\n const targets = [].slice.call(document.querySelectorAll(this._selector))\n\n targets\n .map((element) => {\n let target\n const targetSelector = Util.getSelectorFromElement(element)\n\n if (targetSelector) {\n target = document.querySelector(targetSelector)\n }\n\n if (target) {\n const targetBCR = target.getBoundingClientRect()\n if (targetBCR.width || targetBCR.height) {\n // TODO (fat): remove sketch reliance on jQuery position/offset\n return [\n $(target)[offsetMethod]().top + offsetBase,\n targetSelector\n ]\n }\n }\n return null\n })\n .filter((item) => item)\n .sort((a, b) => a[0] - b[0])\n .forEach((item) => {\n this._offsets.push(item[0])\n this._targets.push(item[1])\n })\n }\n\n dispose() {\n $.removeData(this._element, DATA_KEY)\n $(this._scrollElement).off(EVENT_KEY)\n\n this._element = null\n this._scrollElement = null\n this._config = null\n this._selector = null\n this._offsets = null\n this._targets = null\n this._activeTarget = null\n this._scrollHeight = null\n }\n\n // Private\n\n _getConfig(config) {\n config = {\n ...Default,\n ...typeof config === 'object' && config ? config : {}\n }\n\n if (typeof config.target !== 'string') {\n let id = $(config.target).attr('id')\n if (!id) {\n id = Util.getUID(NAME)\n $(config.target).attr('id', id)\n }\n config.target = `#${id}`\n }\n\n Util.typeCheckConfig(NAME, config, DefaultType)\n\n return config\n }\n\n _getScrollTop() {\n return this._scrollElement === window\n ? this._scrollElement.pageYOffset : this._scrollElement.scrollTop\n }\n\n _getScrollHeight() {\n return this._scrollElement.scrollHeight || Math.max(\n document.body.scrollHeight,\n document.documentElement.scrollHeight\n )\n }\n\n _getOffsetHeight() {\n return this._scrollElement === window\n ? window.innerHeight : this._scrollElement.getBoundingClientRect().height\n }\n\n _process() {\n const scrollTop = this._getScrollTop() + this._config.offset\n const scrollHeight = this._getScrollHeight()\n const maxScroll = this._config.offset +\n scrollHeight -\n this._getOffsetHeight()\n\n if (this._scrollHeight !== scrollHeight) {\n this.refresh()\n }\n\n if (scrollTop >= maxScroll) {\n const target = this._targets[this._targets.length - 1]\n\n if (this._activeTarget !== target) {\n this._activate(target)\n }\n return\n }\n\n if (this._activeTarget && scrollTop < this._offsets[0] && this._offsets[0] > 0) {\n this._activeTarget = null\n this._clear()\n return\n }\n\n const offsetLength = this._offsets.length\n for (let i = offsetLength; i--;) {\n const isActiveTarget = this._activeTarget !== this._targets[i] &&\n scrollTop >= this._offsets[i] &&\n (typeof this._offsets[i + 1] === 'undefined' ||\n scrollTop < this._offsets[i + 1])\n\n if (isActiveTarget) {\n this._activate(this._targets[i])\n }\n }\n }\n\n _activate(target) {\n this._activeTarget = target\n\n this._clear()\n\n const queries = this._selector\n .split(',')\n .map((selector) => `${selector}[data-target=\"${target}\"],${selector}[href=\"${target}\"]`)\n\n const $link = $([].slice.call(document.querySelectorAll(queries.join(','))))\n\n if ($link.hasClass(ClassName.DROPDOWN_ITEM)) {\n $link.closest(Selector.DROPDOWN).find(Selector.DROPDOWN_TOGGLE).addClass(ClassName.ACTIVE)\n $link.addClass(ClassName.ACTIVE)\n } else {\n // Set triggered link as active\n $link.addClass(ClassName.ACTIVE)\n // Set triggered links parents as active\n // With both