# sourcesContent[]
/**
 * --------------------------------------------------------------------------
 * Bootstrap (v4.2.1): util.js
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 * --------------------------------------------------------------------------
 */

import $ from 'jquery'

/**
 * ------------------------------------------------------------------------
 * Private TransitionEnd Helpers
 * ------------------------------------------------------------------------
 */

const TRANSITION_END = 'transitionend'
const MAX_UID = 1000000
const MILLISECONDS_MULTIPLIER = 1000

// Shoutout AngusCroll (https://goo.gl/pxwQGp)
function toType(obj) {
  return {}.toString.call(obj).match(/\s([a-z]+)/i)[1].toLowerCase()
}

function getSpecialTransitionEndEvent() {
  return {
    bindType: TRANSITION_END,
    delegateType: TRANSITION_END,
    handle(event) {
      if ($(event.target).is(this)) {
        return event.handleObj.handler.apply(this, arguments) // eslint-disable-line prefer-rest-params
      }
      return undefined // eslint-disable-line no-undefined
    }
  }
}

function transitionEndEmulator(duration) {
  let called = false

  $(this).one(Util.TRANSITION_END, () => {
    called = true
  })

  setTimeout(() => {
    if (!called) {
      Util.triggerTransitionEnd(this)
    }
  }, duration)

  return this
}

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

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

const Util = {

  TRANSITION_END: 'bsTransitionEnd',

  getUID(prefix) {
    do {
      // eslint-disable-next-line no-bitwise
      prefix += ~~(Math.random() * MAX_UID) // "~~" acts like a faster Math.floor() here
    } while (document.getElementById(prefix))
    return prefix
  },

  getSelectorFromElement(element) {
    let selector = element.getAttribute('data-target')

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

    return selector && document.querySelector(selector) ? selector : null
  },

  getTransitionDurationFromElement(element) {
    if (!element) {
      return 0
    }

    // Get transition-duration of the element
    let transitionDuration = $(element).css('transition-duration')
    let transitionDelay = $(element).css('transition-delay')

    const floatTransitionDuration = parseFloat(transitionDuration)
    const floatTransitionDelay = parseFloat(transitionDelay)

    // Return 0 if element or transition duration is not found
    if (!floatTransitionDuration && !floatTransitionDelay) {
      return 0
    }

    // If multiple durations are defined, take the first
    transitionDuration = transitionDuration.split(',')[0]
    transitionDelay = transitionDelay.split(',')[0]

    return (parseFloat(transitionDuration) + parseFloat(transitionDelay)) * MILLISECONDS_MULTIPLIER
  },

  reflow(element) {
    return element.offsetHeight
  },

  triggerTransitionEnd(element) {
    $(element).trigger(TRANSITION_END)
  },

  // TODO: Remove in v5
  supportsTransitionEnd() {
    return Boolean(TRANSITION_END)
  },

  isElement(obj) {
    return (obj[0] || obj).nodeType
  },

  typeCheckConfig(componentName, config, configTypes) {
    for (const property in configTypes) {
      if (Object.prototype.hasOwnProperty.call(configTypes, property)) {
        const expectedTypes = configTypes[property]
        const value         = config[property]
        const valueType     = value && Util.isElement(value)
          ? 'element' : toType(value)

        if (!new RegExp(expectedTypes).test(valueType)) {
          throw new Error(
            `${componentName.toUpperCase()}: ` +
            `Option "${property}" provided type "${valueType}" ` +
            `but expected type "${expectedTypes}".`)
        }
      }
    }
  },

  findShadowRoot(element) {
    if (!document.documentElement.attachShadow) {
      return null
    }

    // Can find the shadow root otherwise it'll return the document
    if (typeof element.getRootNode === 'function') {
      const root = element.getRootNode()
      return root instanceof ShadowRoot ? root : null
    }

    if (element instanceof ShadowRoot) {
      return element
    }

    // when we don't find a shadow root
    if (!element.parentNode) {
      return null
    }

    return Util.findShadowRoot(element.parentNode)
  }
}

setTransitionEndSupport()

export default Util

# sourcesContent[]
/**
 * --------------------------------------------------------------------------
 * Bootstrap (v4.2.1): carousel.js
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 * --------------------------------------------------------------------------
 */

import $ from 'jquery'
import Util from './util'

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

const NAME                   = 'carousel'
const VERSION                = '4.2.1'
const DATA_KEY               = 'bs.carousel'
const EVENT_KEY              = `.${DATA_KEY}`
const DATA_API_KEY           = '.data-api'
const JQUERY_NO_CONFLICT     = $.fn[NAME]
const ARROW_LEFT_KEYCODE     = 37 // KeyboardEvent.which value for left arrow key
const ARROW_RIGHT_KEYCODE    = 39 // KeyboardEvent.which value for right arrow key
const TOUCHEVENT_COMPAT_WAIT = 500 // Time for mouse compat events to fire after touch
const SWIPE_THRESHOLD        = 40

const Default = {
  interval : 5000,
  keyboard : true,
  slide    : false,
  pause    : 'hover',
  wrap     : true,
  touch    : true
}

const DefaultType = {
  interval : '(number|boolean)',
  keyboard : 'boolean',
  slide    : '(boolean|string)',
  pause    : '(string|boolean)',
  wrap     : 'boolean',
  touch    : 'boolean'
}

const Direction = {
  NEXT     : 'next',
  PREV     : 'prev',
  LEFT     : 'left',
  RIGHT    : 'right'
}

const Event = {
  SLIDE          : `slide${EVENT_KEY}`,
  SLID           : `slid${EVENT_KEY}`,
  KEYDOWN        : `keydown${EVENT_KEY}`,
  MOUSEENTER     : `mouseenter${EVENT_KEY}`,
  MOUSELEAVE     : `mouseleave${EVENT_KEY}`,
  TOUCHSTART     : `touchstart${EVENT_KEY}`,
  TOUCHMOVE      : `touchmove${EVENT_KEY}`,
  TOUCHEND       : `touchend${EVENT_KEY}`,
  POINTERDOWN    : `pointerdown${EVENT_KEY}`,
  POINTERUP      : `pointerup${EVENT_KEY}`,
  DRAG_START     : `dragstart${EVENT_KEY}`,
  LOAD_DATA_API  : `load${EVENT_KEY}${DATA_API_KEY}`,
  CLICK_DATA_API : `click${EVENT_KEY}${DATA_API_KEY}`
}

const ClassName = {
  CAROUSEL      : 'carousel',
  ACTIVE        : 'active',
  SLIDE         : 'slide',
  RIGHT         : 'carousel-item-right',
  LEFT          : 'carousel-item-left',
  NEXT          : 'carousel-item-next',
  PREV          : 'carousel-item-prev',
  ITEM          : 'carousel-item',
  POINTER_EVENT : 'pointer-event'
}

const Selector = {
  ACTIVE      : '.active',
  ACTIVE_ITEM : '.active.carousel-item',
  ITEM        : '.carousel-item',
  ITEM_IMG    : '.carousel-item img',
  NEXT_PREV   : '.carousel-item-next, .carousel-item-prev',
  INDICATORS  : '.carousel-indicators',
  DATA_SLIDE  : '[data-slide], [data-slide-to]',
  DATA_RIDE   : '[data-ride="carousel"]'
}

const PointerType = {
  TOUCH : 'touch',
  PEN   : 'pen'
}

/**
 * ------------------------------------------------------------------------
 * Class Definition
 * ------------------------------------------------------------------------
 */
class Carousel {
  constructor(element, config) {
    this._items         = null
    this._interval      = null
    this._activeElement = null
    this._isPaused      = false
    this._isSliding     = false
    this.touchTimeout   = null
    this.touchStartX    = 0
    this.touchDeltaX    = 0

    this._config            = this._getConfig(config)
    this._element           = element
    this._indicatorsElement = this._element.querySelector(Selector.INDICATORS)
    this._touchSupported    = 'ontouchstart' in document.documentElement || navigator.maxTouchPoints > 0
    this._pointerEvent      = Boolean(window.PointerEvent || window.MSPointerEvent)

    this._addEventListeners()
  }

  // Getters

  static get VERSION() {
    return VERSION
  }

  static get Default() {
    return Default
  }

  // Public

  next() {
    if (!this._isSliding) {
      this._slide(Direction.NEXT)
    }
  }

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

  prev() {
    if (!this._isSliding) {
      this._slide(Direction.PREV)
    }
  }

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

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

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

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

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

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

  to(index) {
    this._activeElement = this._element.querySelector(Selector.ACTIVE_ITEM)

    const activeIndex = this._getItemIndex(this._activeElement)

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

    if (this._isSliding) {
      $(this._element).one(Event.SLID, () => this.to(index))
      return
    }

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

    const direction = index > activeIndex
      ? Direction.NEXT
      : Direction.PREV

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

  dispose() {
    $(this._element).off(EVENT_KEY)
    $.removeData(this._element, DATA_KEY)

    this._items             = null
    this._config            = null
    this._element           = null
    this._interval          = null
    this._isPaused          = null
    this._isSliding         = null
    this._activeElement     = null
    this._indicatorsElement = null
  }

  // Private

  _getConfig(config) {
    config = {
      ...Default,
      ...config
    }
    Util.typeCheckConfig(NAME, config, DefaultType)
    return config
  }

  _handleSwipe() {
    const absDeltax = Math.abs(this.touchDeltaX)

    if (absDeltax <= SWIPE_THRESHOLD) {
      return
    }

    const direction = absDeltax / this.touchDeltaX

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

    // swipe right
    if (direction < 0) {
      this.next()
    }
  }

  _addEventListeners() {
    if (this._config.keyboard) {
      $(this._element)
        .on(Event.KEYDOWN, (event) => this._keydown(event))
    }

    if (this._config.pause === 'hover') {
      $(this._element)
        .on(Event.MOUSEENTER, (event) => this.pause(event))
        .on(Event.MOUSELEAVE, (event) => this.cycle(event))
    }

    this._addTouchEventListeners()
  }

  _addTouchEventListeners() {
    if (!this._touchSupported) {
      return
    }

    const start = (event) => {
      if (this._pointerEvent && PointerType[event.originalEvent.pointerType.toUpperCase()]) {
        this.touchStartX = event.originalEvent.clientX
      } else if (!this._pointerEvent) {
        this.touchStartX = event.originalEvent.touches[0].clientX
      }
    }

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

    const end = (event) => {
      if (this._pointerEvent && PointerType[event.originalEvent.pointerType.toUpperCase()]) {
        this.touchDeltaX = event.originalEvent.clientX - this.touchStartX
      }

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

        this.pause()
        if (this.touchTimeout) {
          clearTimeout(this.touchTimeout)
        }
        this.touchTimeout = setTimeout((event) => this.cycle(event), TOUCHEVENT_COMPAT_WAIT + this._config.interval)
      }
    }

    $(this._element.querySelectorAll(Selector.ITEM_IMG)).on(Event.DRAG_START, (e) => e.preventDefault())
    if (this._pointerEvent) {
      $(this._element).on(Event.POINTERDOWN, (event) => start(event))
      $(this._element).on(Event.POINTERUP, (event) => end(event))

      this._element.classList.add(ClassName.POINTER_EVENT)
    } else {
      $(this._element).on(Event.TOUCHSTART, (event) => start(event))
      $(this._element).on(Event.TOUCHMOVE, (event) => move(event))
      $(this._element).on(Event.TOUCHEND, (event) => end(event))
    }
  }

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

    switch (event.which) {
      case ARROW_LEFT_KEYCODE:
        event.preventDefault()
        this.prev()
        break
      case ARROW_RIGHT_KEYCODE:
        event.preventDefault()
        this.next()
        break
      default:
    }
  }

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

  _getItemByDirection(direction, activeElement) {
    const isNextDirection = direction === Direction.NEXT
    const isPrevDirection = direction === Direction.PREV
    const activeIndex     = this._getItemIndex(activeElement)
    const lastItemIndex   = this._items.length - 1
    const isGoingToWrap   = isPrevDirection && activeIndex === 0 ||
                            isNextDirection && activeIndex === lastItemIndex

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

    const delta     = direction === Direction.PREV ? -1 : 1
    const itemIndex = (activeIndex + delta) % this._items.length

    return itemIndex === -1
      ? this._items[this._items.length - 1] : this._items[itemIndex]
  }

  _triggerSlideEvent(relatedTarget, eventDirectionName) {
    const targetIndex = this._getItemIndex(relatedTarget)
    const fromIndex = this._getItemIndex(this._element.querySelector(Selector.ACTIVE_ITEM))
    const slideEvent = $.Event(Event.SLIDE, {
      relatedTarget,
      direction: eventDirectionName,
      from: fromIndex,
      to: targetIndex
    })

    $(this._element).trigger(slideEvent)

    return slideEvent
  }

  _setActiveIndicatorElement(element) {
    if (this._indicatorsElement) {
      const indicators = [].slice.call(this._indicatorsElement.querySelectorAll(Selector.ACTIVE))
      $(indicators)
        .removeClass(ClassName.ACTIVE)

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

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

  _slide(direction, element) {
    const activeElement = this._element.querySelector(Selector.ACTIVE_ITEM)
    const activeElementIndex = this._getItemIndex(activeElement)
    const nextElement   = element || activeElement &&
      this._getItemByDirection(direction, activeElement)
    const nextElementIndex = this._getItemIndex(nextElement)
    const isCycling = Boolean(this._interval)

    let directionalClassName
    let orderClassName
    let eventDirectionName

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

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

    const slideEvent = this._triggerSlideEvent(nextElement, eventDirectionName)
    if (slideEvent.isDefaultPrevented()) {
      return
    }

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

    this._isSliding = true

    if (isCycling) {
      this.pause()
    }

    this._setActiveIndicatorElement(nextElement)

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

    if ($(this._element).hasClass(ClassName.SLIDE)) {
      $(nextElement).addClass(orderClassName)

      Util.reflow(nextElement)

      $(activeElement).addClass(directionalClassName)
      $(nextElement).addClass(directionalClassName)

      const nextElementInterval = parseInt(nextElement.getAttribute('data-interval'), 10)
      if (nextElementInterval) {
        this._config.defaultInterval = this._config.defaultInterval || this._config.interval
        this._config.interval = nextElementInterval
      } else {
        this._config.interval = this._config.defaultInterval || this._config.interval
      }

      const transitionDuration = Util.getTransitionDurationFromElement(activeElement)

      $(activeElement)
        .one(Util.TRANSITION_END, () => {
          $(nextElement)
            .removeClass(`${directionalClassName} ${orderClassName}`)
            .addClass(ClassName.ACTIVE)

          $(activeElement).removeClass(`${ClassName.ACTIVE} ${orderClassName} ${directionalClassName}`)

          this._isSliding = false

          setTimeout(() => $(this._element).trigger(slidEvent), 0)
        })
        .emulateTransitionEnd(transitionDuration)
    } else {
      $(activeElement).removeClass(ClassName.ACTIVE)
      $(nextElement).addClass(ClassName.ACTIVE)

      this._isSliding = false
      $(this._element).trigger(slidEvent)
    }

    if (isCycling) {
      this.cycle()
    }
  }

  // Static

  static _jQueryInterface(config) {
    return this.each(function () {
      let data = $(this).data(DATA_KEY)
      let _config = {
        ...Default,
        ...$(this).data()
      }

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

      const action = typeof config === 'string' ? config : _config.slide

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

      if (typeof config === 'number') {
        data.to(config)
      } else if (typeof action === 'string') {
        if (typeof data[action] === 'undefined') {
          throw new TypeError(`No method named "${action}"`)
        }
        data[action]()
      } else if (_config.interval) {
        data.pause()
        data.cycle()
      }
    })
  }

  static _dataApiClickHandler(event) {
    const selector = Util.getSelectorFromElement(this)

    if (!selector) {
      return
    }

    const target = $(selector)[0]

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

    const config = {
      ...$(target).data(),
      ...$(this).data()
    }
    const slideIndex = this.getAttribute('data-slide-to')

    if (slideIndex) {
      config.interval = false
    }

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

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

    event.preventDefault()
  }
}

/**
 * ------------------------------------------------------------------------
 * Data Api implementation
 * ------------------------------------------------------------------------
 */

$(document)
  .on(Event.CLICK_DATA_API, Selector.DATA_SLIDE, Carousel._dataApiClickHandler)

$(window).on(Event.LOAD_DATA_API, () => {
  const carousels = [].slice.call(document.querySelectorAll(Selector.DATA_RIDE))
  for (let i = 0, len = carousels.length; i < len; i++) {
    const $carousel = $(carousels[i])
    Carousel._jQueryInterface.call($carousel, $carousel.data())
  }
})

/**
 * ------------------------------------------------------------------------
 * jQuery
 * ------------------------------------------------------------------------
 */

$.fn[NAME] = Carousel._jQueryInterface
$.fn[NAME].Constructor = Carousel
$.fn[NAME].noConflict = () => {
  $.fn[NAME] = JQUERY_NO_CONFLICT
  return Carousel._jQueryInterface
}

export default Carousel

# sourcesContent[]
/**!
 * @fileOverview Kickass library to create and place poppers near their reference elements.
 * @version 1.14.6
 * @license
 * Copyright (c) 2016 Federico Zivolo and contributors
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
var isBrowser = typeof window !== 'undefined' && typeof document !== 'undefined';

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

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

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

var supportsMicroTasks = isBrowser && window.Promise;

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

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

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

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

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

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

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

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

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

  return getScrollParent(getParentNode(element));
}

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

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

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

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

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

  var nodeName = offsetParent && offsetParent.nodeName;

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

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

  return offsetParent;
}

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

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

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

  return node;
}

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

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

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

  // Both nodes are inside #document

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

    return getOffsetParent(commonAncestorContainer);
  }

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

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

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

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

  return element[upperSide];
}

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

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

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

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

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

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

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

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

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

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

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





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

  return obj;
};

var _extends = Object.assign || function (target) {
  for (var i = 1; i < arguments.length; i++) {
    var source = arguments[i];

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

  return target;
};

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

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

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

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

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

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

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

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

  return getClientRect(result);
}

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

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

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

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

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

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

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

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

  return offsets;
}

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

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

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

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

  return getClientRect(offset);
}

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

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

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

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

  // NOTE: 1 DOM access here

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

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

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

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

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

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

  return boundaries;
}

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

  return width * height;
}

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  return popperOffsets;
}

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

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

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

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

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

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

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

  return data;
}

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

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

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

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

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

  data.positionFixed = this.options.positionFixed;

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

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

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

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

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

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

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

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

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

  this.disableEventListeners();

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

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

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

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

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

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

  return state;
}

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

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

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

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

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

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

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

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

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

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

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

  return data;
}

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

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

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

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

  return options;
}

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


  var isVertical = ['left', 'right'].indexOf(data.placement) !== -1;
  var isVariation = data.placement.indexOf('-') !== -1;
  var sameWidthOddness = reference.width % 2 === popper.width % 2;
  var bothOddWidth = reference.width % 2 === 1 && popper.width % 2 === 1;
  var noRound = function noRound(v) {
    return v;
  };

  var horizontalToInteger = !shouldRound ? noRound : isVertical || isVariation || sameWidthOddness ? Math.round : Math.floor;
  var verticalToInteger = !shouldRound ? noRound : Math.round;

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

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

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

  // Remove this legacy support in Popper.js v2

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

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

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

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

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

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

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

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

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

  return data;
}

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

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

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

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

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

  var arrowElement = options.element;

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

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

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

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

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

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

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

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

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

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

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

  return data;
}

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

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

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

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

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

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

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

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

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

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

  var flipOrder = [];

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

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

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

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

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

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

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

    // flip the variation if required
    var isVertical = ['top', 'bottom'].indexOf(placement) !== -1;
    var flippedVariation = !!options.flipVariations && (isVertical && variation === 'start' && overflowsLeft || isVertical && variation === 'end' && overflowsRight || !isVertical && variation === 'start' && overflowsTop || !isVertical && variation === 'end' && overflowsBottom);

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

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

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

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

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

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

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

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

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

  return data;
}

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  data.popper = popper;
  return data;
}

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

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

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

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

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

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

  options.boundaries = boundaries;

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

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

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

  data.offsets.popper = popper;

  return data;
}

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

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

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

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

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

  return data;
}

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

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

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

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

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

  return data;
}

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

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

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

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

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

  return data;
}

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

    this.state.eventsEnabled = eventsEnabled;
  }

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


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

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


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

  }]);
  return Popper;
}();

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


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

export default Popper;
//# sourceMappingURL=popper.js.map

# sourcesContent[]
/**
 * --------------------------------------------------------------------------
 * Bootstrap (v4.2.1): dropdown.js
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 * --------------------------------------------------------------------------
 */

import $ from 'jquery'
import Popper from 'popper.js'
import Util from './util'

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

const NAME                     = 'dropdown'
const VERSION                  = '4.2.1'
const DATA_KEY                 = 'bs.dropdown'
const EVENT_KEY                = `.${DATA_KEY}`
const DATA_API_KEY             = '.data-api'
const JQUERY_NO_CONFLICT       = $.fn[NAME]
const ESCAPE_KEYCODE           = 27 // KeyboardEvent.which value for Escape (Esc) key
const SPACE_KEYCODE            = 32 // KeyboardEvent.which value for space key
const TAB_KEYCODE              = 9 // KeyboardEvent.which value for tab key
const ARROW_UP_KEYCODE         = 38 // KeyboardEvent.which value for up arrow key
const ARROW_DOWN_KEYCODE       = 40 // KeyboardEvent.which value for down arrow key
const RIGHT_MOUSE_BUTTON_WHICH = 3 // MouseEvent.which value for the right button (assuming a right-handed mouse)
const REGEXP_KEYDOWN           = new RegExp(`${ARROW_UP_KEYCODE}|${ARROW_DOWN_KEYCODE}|${ESCAPE_KEYCODE}`)

const Event = {
  HIDE             : `hide${EVENT_KEY}`,
  HIDDEN           : `hidden${EVENT_KEY}`,
  SHOW             : `show${EVENT_KEY}`,
  SHOWN            : `shown${EVENT_KEY}`,
  CLICK            : `click${EVENT_KEY}`,
  CLICK_DATA_API   : `click${EVENT_KEY}${DATA_API_KEY}`,
  KEYDOWN_DATA_API : `keydown${EVENT_KEY}${DATA_API_KEY}`,
  KEYUP_DATA_API   : `keyup${EVENT_KEY}${DATA_API_KEY}`
}

const ClassName = {
  DISABLED        : 'disabled',
  SHOW            : 'show',
  DROPUP          : 'dropup',
  DROPRIGHT       : 'dropright',
  DROPLEFT        : 'dropleft',
  MENURIGHT       : 'dropdown-menu-right',
  MENULEFT        : 'dropdown-menu-left',
  POSITION_STATIC : 'position-static'
}

const Selector = {
  DATA_TOGGLE   : '[data-toggle="dropdown"]',
  FORM_CHILD    : '.dropdown form',
  MENU          : '.dropdown-menu',
  NAVBAR_NAV    : '.navbar-nav',
  VISIBLE_ITEMS : '.dropdown-menu .dropdown-item:not(.disabled):not(:disabled)'
}

const AttachmentMap = {
  TOP       : 'top-start',
  TOPEND    : 'top-end',
  BOTTOM    : 'bottom-start',
  BOTTOMEND : 'bottom-end',
  RIGHT     : 'right-start',
  RIGHTEND  : 'right-end',
  LEFT      : 'left-start',
  LEFTEND   : 'left-end'
}

const Default = {
  offset    : 0,
  flip      : true,
  boundary  : 'scrollParent',
  reference : 'toggle',
  display   : 'dynamic'
}

const DefaultType = {
  offset    : '(number|string|function)',
  flip      : 'boolean',
  boundary  : '(string|element)',
  reference : '(string|element)',
  display   : 'string'
}

/**
 * ------------------------------------------------------------------------
 * Class Definition
 * ------------------------------------------------------------------------
 */

class Dropdown {
  constructor(element, config) {
    this._element  = element
    this._popper   = null
    this._config   = this._getConfig(config)
    this._menu     = this._getMenuElement()
    this._inNavbar = this._detectNavbar()

    this._addEventListeners()
  }

  // Getters

  static get VERSION() {
    return VERSION
  }

  static get Default() {
    return Default
  }

  static get DefaultType() {
    return DefaultType
  }

  // Public

  toggle() {
    if (this._element.disabled || $(this._element).hasClass(ClassName.DISABLED)) {
      return
    }

    const parent   = Dropdown._getParentFromElement(this._element)
    const isActive = $(this._menu).hasClass(ClassName.SHOW)

    Dropdown._clearMenus()

    if (isActive) {
      return
    }

    const relatedTarget = {
      relatedTarget: this._element
    }
    const showEvent = $.Event(Event.SHOW, relatedTarget)

    $(parent).trigger(showEvent)

    if (showEvent.isDefaultPrevented()) {
      return
    }

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

      let referenceElement = this._element

      if (this._config.reference === 'parent') {
        referenceElement = parent
      } else if (Util.isElement(this._config.reference)) {
        referenceElement = this._config.reference

        // Check if it's jQuery element
        if (typeof this._config.reference.jquery !== 'undefined') {
          referenceElement = this._config.reference[0]
        }
      }

      // If boundary is not `scrollParent`, then set position to `static`
      // to allow the menu to "escape" the scroll parent's boundaries
      // https://github.com/twbs/bootstrap/issues/24251
      if (this._config.boundary !== 'scrollParent') {
        $(parent).addClass(ClassName.POSITION_STATIC)
      }
      this._popper = new Popper(referenceElement, this._menu, this._getPopperConfig())
    }

    // If this is a touch-enabled device we add extra
    // empty mouseover listeners to the body's immediate children;
    // only needed because of broken event delegation on iOS
    // https://www.quirksmode.org/blog/archives/2014/02/mouse_event_bub.html
    if ('ontouchstart' in document.documentElement &&
        $(parent).closest(Selector.NAVBAR_NAV).length === 0) {
      $(document.body).children().on('mouseover', null, $.noop)
    }

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

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

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

    const relatedTarget = {
      relatedTarget: this._element
    }
    const showEvent = $.Event(Event.SHOW, relatedTarget)
    const parent = Dropdown._getParentFromElement(this._element)

    $(parent).trigger(showEvent)

    if (showEvent.isDefaultPrevented()) {
      return
    }

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

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

    const relatedTarget = {
      relatedTarget: this._element
    }
    const hideEvent = $.Event(Event.HIDE, relatedTarget)
    const parent = Dropdown._getParentFromElement(this._element)

    $(parent).trigger(hideEvent)

    if (hideEvent.isDefaultPrevented()) {
      return
    }

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

  dispose() {
    $.removeData(this._element, DATA_KEY)
    $(this._element).off(EVENT_KEY)
    this._element = null
    this._menu = null
    if (this._popper !== null) {
      this._popper.destroy()
      this._popper = null
    }
  }

  update() {
    this._inNavbar = this._detectNavbar()
    if (this._popper !== null) {
      this._popper.scheduleUpdate()
    }
  }

  // Private

  _addEventListeners() {
    $(this._element).on(Event.CLICK, (event) => {
      event.preventDefault()
      event.stopPropagation()
      this.toggle()
    })
  }

  _getConfig(config) {
    config = {
      ...this.constructor.Default,
      ...$(this._element).data(),
      ...config
    }

    Util.typeCheckConfig(
      NAME,
      config,
      this.constructor.DefaultType
    )

    return config
  }

  _getMenuElement() {
    if (!this._menu) {
      const parent = Dropdown._getParentFromElement(this._element)

      if (parent) {
        this._menu = parent.querySelector(Selector.MENU)
      }
    }
    return this._menu
  }

  _getPlacement() {
    const $parentDropdown = $(this._element.parentNode)
    let placement = AttachmentMap.BOTTOM

    // Handle dropup
    if ($parentDropdown.hasClass(ClassName.DROPUP)) {
      placement = AttachmentMap.TOP
      if ($(this._menu).hasClass(ClassName.MENURIGHT)) {
        placement = AttachmentMap.TOPEND
      }
    } else if ($parentDropdown.hasClass(ClassName.DROPRIGHT)) {
      placement = AttachmentMap.RIGHT
    } else if ($parentDropdown.hasClass(ClassName.DROPLEFT)) {
      placement = AttachmentMap.LEFT
    } else if ($(this._menu).hasClass(ClassName.MENURIGHT)) {
      placement = AttachmentMap.BOTTOMEND
    }
    return placement
  }

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

  _getPopperConfig() {
    const offsetConf = {}
    if (typeof this._config.offset === 'function') {
      offsetConf.fn = (data) => {
        data.offsets = {
          ...data.offsets,
          ...this._config.offset(data.offsets) || {}
        }
        return data
      }
    } else {
      offsetConf.offset = this._config.offset
    }

    const popperConfig = {
      placement: this._getPlacement(),
      modifiers: {
        offset: offsetConf,
        flip: {
          enabled: this._config.flip
        },
        preventOverflow: {
          boundariesElement: this._config.boundary
        }
      }
    }

    // Disable Popper.js if we have a static display
    if (this._config.display === 'static') {
      popperConfig.modifiers.applyStyle = {
        enabled: false
      }
    }
    return popperConfig
  }

  // Static

  static _jQueryInterface(config) {
    return this.each(function () {
      let data = $(this).data(DATA_KEY)
      const _config = typeof config === 'object' ? config : null

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

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

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

    const toggles = [].slice.call(document.querySelectorAll(Selector.DATA_TOGGLE))

    for (let i = 0, len = toggles.length; i < len; i++) {
      const parent = Dropdown._getParentFromElement(toggles[i])
      const context = $(toggles[i]).data(DATA_KEY)
      const relatedTarget = {
        relatedTarget: toggles[i]
      }

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

      if (!context) {
        continue
      }

      const dropdownMenu = context._menu
      if (!$(parent).hasClass(ClassName.SHOW)) {
        continue
      }

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

      const hideEvent = $.Event(Event.HIDE, relatedTarget)
      $(parent).trigger(hideEvent)
      if (hideEvent.isDefaultPrevented()) {
        continue
      }

      // If this is a touch-enabled device we remove the extra
      // empty mouseover listeners we added for iOS support
      if ('ontouchstart' in document.documentElement) {
        $(document.body).children().off('mouseover', null, $.noop)
      }

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

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

  static _getParentFromElement(element) {
    let parent
    const selector = Util.getSelectorFromElement(element)

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

    return parent || element.parentNode
  }

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

    event.preventDefault()
    event.stopPropagation()

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

    const parent   = Dropdown._getParentFromElement(this)
    const isActive = $(parent).hasClass(ClassName.SHOW)

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

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

    const items = [].slice.call(parent.querySelectorAll(Selector.VISIBLE_ITEMS))

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

    let index = items.indexOf(event.target)

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

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

    if (index < 0) {
      index = 0
    }

    items[index].focus()
  }
}

/**
 * ------------------------------------------------------------------------
 * Data Api implementation
 * ------------------------------------------------------------------------
 */

$(document)
  .on(Event.KEYDOWN_DATA_API, Selector.DATA_TOGGLE, Dropdown._dataApiKeydownHandler)
  .on(Event.KEYDOWN_DATA_API, Selector.MENU, Dropdown._dataApiKeydownHandler)
  .on(`${Event.CLICK_DATA_API} ${Event.KEYUP_DATA_API}`, Dropdown._clearMenus)
  .on(Event.CLICK_DATA_API, Selector.DATA_TOGGLE, function (event) {
    event.preventDefault()
    event.stopPropagation()
    Dropdown._jQueryInterface.call($(this), 'toggle')
  })
  .on(Event.CLICK_DATA_API, Selector.FORM_CHILD, (e) => {
    e.stopPropagation()
  })

/**
 * ------------------------------------------------------------------------
 * jQuery
 * ------------------------------------------------------------------------
 */

$.fn[NAME] = Dropdown._jQueryInterface
$.fn[NAME].Constructor = Dropdown
$.fn[NAME].noConflict = () => {
  $.fn[NAME] = JQUERY_NO_CONFLICT
  return Dropdown._jQueryInterface
}


export default Dropdown

# sourcesContent[]
/**
 * --------------------------------------------------------------------------
 * Bootstrap (v4.2.1): modal.js
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 * --------------------------------------------------------------------------
 */

import $ from 'jquery'
import Util from './util'

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

const NAME               = 'modal'
const VERSION            = '4.2.1'
const DATA_KEY           = 'bs.modal'
const EVENT_KEY          = `.${DATA_KEY}`
const DATA_API_KEY       = '.data-api'
const JQUERY_NO_CONFLICT = $.fn[NAME]
const ESCAPE_KEYCODE     = 27 // KeyboardEvent.which value for Escape (Esc) key

const Default = {
  backdrop : true,
  keyboard : true,
  focus    : true,
  show     : true
}

const DefaultType = {
  backdrop : '(boolean|string)',
  keyboard : 'boolean',
  focus    : 'boolean',
  show     : 'boolean'
}

const Event = {
  HIDE              : `hide${EVENT_KEY}`,
  HIDDEN            : `hidden${EVENT_KEY}`,
  SHOW              : `show${EVENT_KEY}`,
  SHOWN             : `shown${EVENT_KEY}`,
  FOCUSIN           : `focusin${EVENT_KEY}`,
  RESIZE            : `resize${EVENT_KEY}`,
  CLICK_DISMISS     : `click.dismiss${EVENT_KEY}`,
  KEYDOWN_DISMISS   : `keydown.dismiss${EVENT_KEY}`,
  MOUSEUP_DISMISS   : `mouseup.dismiss${EVENT_KEY}`,
  MOUSEDOWN_DISMISS : `mousedown.dismiss${EVENT_KEY}`,
  CLICK_DATA_API    : `click${EVENT_KEY}${DATA_API_KEY}`
}

const ClassName = {
  SCROLLBAR_MEASURER : 'modal-scrollbar-measure',
  BACKDROP           : 'modal-backdrop',
  OPEN               : 'modal-open',
  FADE               : 'fade',
  SHOW               : 'show'
}

const Selector = {
  DIALOG         : '.modal-dialog',
  DATA_TOGGLE    : '[data-toggle="modal"]',
  DATA_DISMISS   : '[data-dismiss="modal"]',
  FIXED_CONTENT  : '.fixed-top, .fixed-bottom, .is-fixed, .sticky-top',
  STICKY_CONTENT : '.sticky-top'
}

/**
 * ------------------------------------------------------------------------
 * Class Definition
 * ------------------------------------------------------------------------
 */

class Modal {
  constructor(element, config) {
    this._config              = this._getConfig(config)
    this._element             = element
    this._dialog              = element.querySelector(Selector.DIALOG)
    this._backdrop            = null
    this._isShown             = false
    this._isBodyOverflowing   = false
    this._ignoreBackdropClick = false
    this._isTransitioning     = false
    this._scrollbarWidth      = 0
  }

  // Getters

  static get VERSION() {
    return VERSION
  }

  static get Default() {
    return Default
  }

  // Public

  toggle(relatedTarget) {
    return this._isShown ? this.hide() : this.show(relatedTarget)
  }

  show(relatedTarget) {
    if (this._isShown || this._isTransitioning) {
      return
    }

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

    const showEvent = $.Event(Event.SHOW, {
      relatedTarget
    })

    $(this._element).trigger(showEvent)

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

    this._isShown = true

    this._checkScrollbar()
    this._setScrollbar()

    this._adjustDialog()

    this._setEscapeEvent()
    this._setResizeEvent()

    $(this._element).on(
      Event.CLICK_DISMISS,
      Selector.DATA_DISMISS,
      (event) => this.hide(event)
    )

    $(this._dialog).on(Event.MOUSEDOWN_DISMISS, () => {
      $(this._element).one(Event.MOUSEUP_DISMISS, (event) => {
        if ($(event.target).is(this._element)) {
          this._ignoreBackdropClick = true
        }
      })
    })

    this._showBackdrop(() => this._showElement(relatedTarget))
  }

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

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

    const hideEvent = $.Event(Event.HIDE)

    $(this._element).trigger(hideEvent)

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

    this._isShown = false
    const transition = $(this._element).hasClass(ClassName.FADE)

    if (transition) {
      this._isTransitioning = true
    }

    this._setEscapeEvent()
    this._setResizeEvent()

    $(document).off(Event.FOCUSIN)

    $(this._element).removeClass(ClassName.SHOW)

    $(this._element).off(Event.CLICK_DISMISS)
    $(this._dialog).off(Event.MOUSEDOWN_DISMISS)


    if (transition) {
      const transitionDuration  = Util.getTransitionDurationFromElement(this._element)

      $(this._element)
        .one(Util.TRANSITION_END, (event) => this._hideModal(event))
        .emulateTransitionEnd(transitionDuration)
    } else {
      this._hideModal()
    }
  }

  dispose() {
    [window, this._element, this._dialog]
      .forEach((htmlElement) => $(htmlElement).off(EVENT_KEY))

    /**
     * `document` has 2 events `Event.FOCUSIN` and `Event.CLICK_DATA_API`
     * Do not move `document` in `htmlElements` array
     * It will remove `Event.CLICK_DATA_API` event that should remain
     */
    $(document).off(Event.FOCUSIN)

    $.removeData(this._element, DATA_KEY)

    this._config              = null
    this._element             = null
    this._dialog              = null
    this._backdrop            = null
    this._isShown             = null
    this._isBodyOverflowing   = null
    this._ignoreBackdropClick = null
    this._isTransitioning     = null
    this._scrollbarWidth      = null
  }

  handleUpdate() {
    this._adjustDialog()
  }

  // Private

  _getConfig(config) {
    config = {
      ...Default,
      ...config
    }
    Util.typeCheckConfig(NAME, config, DefaultType)
    return config
  }

  _showElement(relatedTarget) {
    const transition = $(this._element).hasClass(ClassName.FADE)

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

    this._element.style.display = 'block'
    this._element.removeAttribute('aria-hidden')
    this._element.setAttribute('aria-modal', true)
    this._element.scrollTop = 0

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

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

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

    const shownEvent = $.Event(Event.SHOWN, {
      relatedTarget
    })

    const transitionComplete = () => {
      if (this._config.focus) {
        this._element.focus()
      }
      this._isTransitioning = false
      $(this._element).trigger(shownEvent)
    }

    if (transition) {
      const transitionDuration  = Util.getTransitionDurationFromElement(this._dialog)

      $(this._dialog)
        .one(Util.TRANSITION_END, transitionComplete)
        .emulateTransitionEnd(transitionDuration)
    } else {
      transitionComplete()
    }
  }

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

  _setEscapeEvent() {
    if (this._isShown && this._config.keyboard) {
      $(this._element).on(Event.KEYDOWN_DISMISS, (event) => {
        if (event.which === ESCAPE_KEYCODE) {
          event.preventDefault()
          this.hide()
        }
      })
    } else if (!this._isShown) {
      $(this._element).off(Event.KEYDOWN_DISMISS)
    }
  }

  _setResizeEvent() {
    if (this._isShown) {
      $(window).on(Event.RESIZE, (event) => this.handleUpdate(event))
    } else {
      $(window).off(Event.RESIZE)
    }
  }

  _hideModal() {
    this._element.style.display = 'none'
    this._element.setAttribute('aria-hidden', true)
    this._element.removeAttribute('aria-modal')
    this._isTransitioning = false
    this._showBackdrop(() => {
      $(document.body).removeClass(ClassName.OPEN)
      this._resetAdjustments()
      this._resetScrollbar()
      $(this._element).trigger(Event.HIDDEN)
    })
  }

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

  _showBackdrop(callback) {
    const animate = $(this._element).hasClass(ClassName.FADE)
      ? ClassName.FADE : ''

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

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

      $(this._backdrop).appendTo(document.body)

      $(this._element).on(Event.CLICK_DISMISS, (event) => {
        if (this._ignoreBackdropClick) {
          this._ignoreBackdropClick = false
          return
        }
        if (event.target !== event.currentTarget) {
          return
        }
        if (this._config.backdrop === 'static') {
          this._element.focus()
        } else {
          this.hide()
        }
      })

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

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

      if (!callback) {
        return
      }

      if (!animate) {
        callback()
        return
      }

      const backdropTransitionDuration = Util.getTransitionDurationFromElement(this._backdrop)

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

      const callbackRemove = () => {
        this._removeBackdrop()
        if (callback) {
          callback()
        }
      }

      if ($(this._element).hasClass(ClassName.FADE)) {
        const backdropTransitionDuration = Util.getTransitionDurationFromElement(this._backdrop)

        $(this._backdrop)
          .one(Util.TRANSITION_END, callbackRemove)
          .emulateTransitionEnd(backdropTransitionDuration)
      } else {
        callbackRemove()
      }
    } else if (callback) {
      callback()
    }
  }

  // ----------------------------------------------------------------------
  // the following methods are used to handle overflowing modals
  // todo (fat): these should probably be refactored out of modal.js
  // ----------------------------------------------------------------------

  _adjustDialog() {
    const isModalOverflowing =
      this._element.scrollHeight > document.documentElement.clientHeight

    if (!this._isBodyOverflowing && isModalOverflowing) {
      this._element.style.paddingLeft = `${this._scrollbarWidth}px`
    }

    if (this._isBodyOverflowing && !isModalOverflowing) {
      this._element.style.paddingRight = `${this._scrollbarWidth}px`
    }
  }

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

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

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

      // Adjust fixed content padding
      $(fixedContent).each((index, element) => {
        const actualPadding = element.style.paddingRight
        const calculatedPadding = $(element).css('padding-right')
        $(element)
          .data('padding-right', actualPadding)
          .css('padding-right', `${parseFloat(calculatedPadding) + this._scrollbarWidth}px`)
      })

      // Adjust sticky content margin
      $(stickyContent).each((index, element) => {
        const actualMargin = element.style.marginRight
        const calculatedMargin = $(element).css('margin-right')
        $(element)
          .data('margin-right', actualMargin)
          .css('margin-right', `${parseFloat(calculatedMargin) - this._scrollbarWidth}px`)
      })

      // Adjust body padding
      const actualPadding = document.body.style.paddingRight
      const calculatedPadding = $(document.body).css('padding-right')
      $(document.body)
        .data('padding-right', actualPadding)
        .css('padding-right', `${parseFloat(calculatedPadding) + this._scrollbarWidth}px`)
    }

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

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

    // Restore sticky content
    const elements = [].slice.call(document.querySelectorAll(`${Selector.STICKY_CONTENT}`))
    $(elements).each((index, element) => {
      const margin = $(element).data('margin-right')
      if (typeof margin !== 'undefined') {
        $(element).css('margin-right', margin).removeData('margin-right')
      }
    })

    // Restore body padding
    const padding = $(document.body).data('padding-right')
    $(document.body).removeData('padding-right')
    document.body.style.paddingRight = padding ? padding : ''
  }

  _getScrollbarWidth() { // thx d.walsh
    const scrollDiv = document.createElement('div')
    scrollDiv.className = ClassName.SCROLLBAR_MEASURER
    document.body.appendChild(scrollDiv)
    const scrollbarWidth = scrollDiv.getBoundingClientRect().width - scrollDiv.clientWidth
    document.body.removeChild(scrollDiv)
    return scrollbarWidth
  }

  // Static

  static _jQueryInterface(config, relatedTarget) {
    return this.each(function () {
      let data = $(this).data(DATA_KEY)
      const _config = {
        ...Default,
        ...$(this).data(),
        ...typeof config === 'object' && config ? config : {}
      }

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

      if (typeof config === 'string') {
        if (typeof data[config] === 'undefined') {
          throw new TypeError(`No method named "${config}"`)
        }
        data[config](relatedTarget)
      } else if (_config.show) {
        data.show(relatedTarget)
      }
    })
  }
}

/**
 * ------------------------------------------------------------------------
 * Data Api implementation
 * ------------------------------------------------------------------------
 */

$(document).on(Event.CLICK_DATA_API, Selector.DATA_TOGGLE, function (event) {
  let target
  const selector = Util.getSelectorFromElement(this)

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

  const config = $(target).data(DATA_KEY)
    ? 'toggle' : {
      ...$(target).data(),
      ...$(this).data()
    }

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

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

    $target.one(Event.HIDDEN, () => {
      if ($(this).is(':visible')) {
        this.focus()
      }
    })
  })

  Modal._jQueryInterface.call($(target), config, this)
})

/**
 * ------------------------------------------------------------------------
 * jQuery
 * ------------------------------------------------------------------------
 */

$.fn[NAME] = Modal._jQueryInterface
$.fn[NAME].Constructor = Modal
$.fn[NAME].noConflict = () => {
  $.fn[NAME] = JQUERY_NO_CONFLICT
  return Modal._jQueryInterface
}

export default Modal

# sourcesContent[]
/**
 * --------------------------------------------------------------------------
 * Bootstrap (v4.2.1): tooltip.js
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 * --------------------------------------------------------------------------
 */

import $ from 'jquery'
import Popper from 'popper.js'
import Util from './util'

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

const NAME               = 'tooltip'
const VERSION            = '4.2.1'
const DATA_KEY           = 'bs.tooltip'
const EVENT_KEY          = `.${DATA_KEY}`
const JQUERY_NO_CONFLICT = $.fn[NAME]
const CLASS_PREFIX       = 'bs-tooltip'
const BSCLS_PREFIX_REGEX = new RegExp(`(^|\\s)${CLASS_PREFIX}\\S+`, 'g')

const DefaultType = {
  animation         : 'boolean',
  template          : 'string',
  title             : '(string|element|function)',
  trigger           : 'string',
  delay             : '(number|object)',
  html              : 'boolean',
  selector          : '(string|boolean)',
  placement         : '(string|function)',
  offset            : '(number|string)',
  container         : '(string|element|boolean)',
  fallbackPlacement : '(string|array)',
  boundary          : '(string|element)'
}

const AttachmentMap = {
  AUTO   : 'auto',
  TOP    : 'top',
  RIGHT  : 'right',
  BOTTOM : 'bottom',
  LEFT   : 'left'
}

const Default = {
  animation         : true,
  template          : '<div class="tooltip" role="tooltip">' +
                    '<div class="arrow"></div>' +
                    '<div class="tooltip-inner"></div></div>',
  trigger           : 'hover focus',
  title             : '',
  delay             : 0,
  html              : false,
  selector          : false,
  placement         : 'top',
  offset            : 0,
  container         : false,
  fallbackPlacement : 'flip',
  boundary          : 'scrollParent'
}

const HoverState = {
  SHOW : 'show',
  OUT  : 'out'
}

const Event = {
  HIDE       : `hide${EVENT_KEY}`,
  HIDDEN     : `hidden${EVENT_KEY}`,
  SHOW       : `show${EVENT_KEY}`,
  SHOWN      : `shown${EVENT_KEY}`,
  INSERTED   : `inserted${EVENT_KEY}`,
  CLICK      : `click${EVENT_KEY}`,
  FOCUSIN    : `focusin${EVENT_KEY}`,
  FOCUSOUT   : `focusout${EVENT_KEY}`,
  MOUSEENTER : `mouseenter${EVENT_KEY}`,
  MOUSELEAVE : `mouseleave${EVENT_KEY}`
}

const ClassName = {
  FADE : 'fade',
  SHOW : 'show'
}

const Selector = {
  TOOLTIP       : '.tooltip',
  TOOLTIP_INNER : '.tooltip-inner',
  ARROW         : '.arrow'
}

const Trigger = {
  HOVER  : 'hover',
  FOCUS  : 'focus',
  CLICK  : 'click',
  MANUAL : 'manual'
}


/**
 * ------------------------------------------------------------------------
 * Class Definition
 * ------------------------------------------------------------------------
 */

class Tooltip {
  constructor(element, config) {
    /**
     * Check for Popper dependency
     * Popper - https://popper.js.org
     */
    if (typeof Popper === 'undefined') {
      throw new TypeError('Bootstrap\'s tooltips require Popper.js (https://popper.js.org/)')
    }

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

    // Protected
    this.element = element
    this.config  = this._getConfig(config)
    this.tip     = null

    this._setListeners()
  }

  // Getters

  static get VERSION() {
    return VERSION
  }

  static get Default() {
    return Default
  }

  static get NAME() {
    return NAME
  }

  static get DATA_KEY() {
    return DATA_KEY
  }

  static get Event() {
    return Event
  }

  static get EVENT_KEY() {
    return EVENT_KEY
  }

  static get DefaultType() {
    return DefaultType
  }

  // Public

  enable() {
    this._isEnabled = true
  }

  disable() {
    this._isEnabled = false
  }

  toggleEnabled() {
    this._isEnabled = !this._isEnabled
  }

  toggle(event) {
    if (!this._isEnabled) {
      return
    }

    if (event) {
      const dataKey = this.constructor.DATA_KEY
      let context = $(event.currentTarget).data(dataKey)

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

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

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

      this._enter(null, this)
    }
  }

  dispose() {
    clearTimeout(this._timeout)

    $.removeData(this.element, this.constructor.DATA_KEY)

    $(this.element).off(this.constructor.EVENT_KEY)
    $(this.element).closest('.modal').off('hide.bs.modal')

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

    this._isEnabled     = null
    this._timeout       = null
    this._hoverState    = null
    this._activeTrigger = null
    if (this._popper !== null) {
      this._popper.destroy()
    }

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

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

    const showEvent = $.Event(this.constructor.Event.SHOW)
    if (this.isWithContent() && this._isEnabled) {
      $(this.element).trigger(showEvent)

      const shadowRoot = Util.findShadowRoot(this.element)
      const isInTheDom = $.contains(
        shadowRoot !== null ? shadowRoot : this.element.ownerDocument.documentElement,
        this.element
      )

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

      const tip   = this.getTipElement()
      const tipId = Util.getUID(this.constructor.NAME)

      tip.setAttribute('id', tipId)
      this.element.setAttribute('aria-describedby', tipId)

      this.setContent()

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

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

      const attachment = this._getAttachment(placement)
      this.addAttachmentClass(attachment)

      const container = this._getContainer()
      $(tip).data(this.constructor.DATA_KEY, this)

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

      $(this.element).trigger(this.constructor.Event.INSERTED)

      this._popper = new Popper(this.element, tip, {
        placement: attachment,
        modifiers: {
          offset: {
            offset: this.config.offset
          },
          flip: {
            behavior: this.config.fallbackPlacement
          },
          arrow: {
            element: Selector.ARROW
          },
          preventOverflow: {
            boundariesElement: this.config.boundary
          }
        },
        onCreate: (data) => {
          if (data.originalPlacement !== data.placement) {
            this._handlePopperPlacementChange(data)
          }
        },
        onUpdate: (data) => this._handlePopperPlacementChange(data)
      })

      $(tip).addClass(ClassName.SHOW)

      // If this is a touch-enabled device we add extra
      // empty mouseover listeners to the body's immediate children;
      // only needed because of broken event delegation on iOS
      // https://www.quirksmode.org/blog/archives/2014/02/mouse_event_bub.html
      if ('ontouchstart' in document.documentElement) {
        $(document.body).children().on('mouseover', null, $.noop)
      }

      const complete = () => {
        if (this.config.animation) {
          this._fixTransition()
        }
        const prevHoverState = this._hoverState
        this._hoverState     = null

        $(this.element).trigger(this.constructor.Event.SHOWN)

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

      if ($(this.tip).hasClass(ClassName.FADE)) {
        const transitionDuration = Util.getTransitionDurationFromElement(this.tip)

        $(this.tip)
          .one(Util.TRANSITION_END, complete)
          .emulateTransitionEnd(transitionDuration)
      } else {
        complete()
      }
    }
  }

  hide(callback) {
    const tip       = this.getTipElement()
    const hideEvent = $.Event(this.constructor.Event.HIDE)
    const complete = () => {
      if (this._hoverState !== HoverState.SHOW && tip.parentNode) {
        tip.parentNode.removeChild(tip)
      }

      this._cleanTipClass()
      this.element.removeAttribute('aria-describedby')
      $(this.element).trigger(this.constructor.Event.HIDDEN)
      if (this._popper !== null) {
        this._popper.destroy()
      }

      if (callback) {
        callback()
      }
    }

    $(this.element).trigger(hideEvent)

    if (hideEvent.isDefaultPrevented()) {
      return
    }

    $(tip).removeClass(ClassName.SHOW)

    // If this is a touch-enabled device we remove the extra
    // empty mouseover listeners we added for iOS support
    if ('ontouchstart' in document.documentElement) {
      $(document.body).children().off('mouseover', null, $.noop)
    }

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

    if ($(this.tip).hasClass(ClassName.FADE)) {
      const transitionDuration = Util.getTransitionDurationFromElement(tip)

      $(tip)
        .one(Util.TRANSITION_END, complete)
        .emulateTransitionEnd(transitionDuration)
    } else {
      complete()
    }

    this._hoverState = ''
  }

  update() {
    if (this._popper !== null) {
      this._popper.scheduleUpdate()
    }
  }

  // Protected

  isWithContent() {
    return Boolean(this.getTitle())
  }

  addAttachmentClass(attachment) {
    $(this.getTipElement()).addClass(`${CLASS_PREFIX}-${attachment}`)
  }

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

  setContent() {
    const tip = this.getTipElement()
    this.setElementContent($(tip.querySelectorAll(Selector.TOOLTIP_INNER)), this.getTitle())
    $(tip).removeClass(`${ClassName.FADE} ${ClassName.SHOW}`)
  }

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

  getTitle() {
    let title = this.element.getAttribute('data-original-title')

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

    return title
  }

  // Private

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

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

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

  _getAttachment(placement) {
    return AttachmentMap[placement.toUpperCase()]
  }

  _setListeners() {
    const triggers = this.config.trigger.split(' ')

    triggers.forEach((trigger) => {
      if (trigger === 'click') {
        $(this.element).on(
          this.constructor.Event.CLICK,
          this.config.selector,
          (event) => this.toggle(event)
        )
      } else if (trigger !== Trigger.MANUAL) {
        const eventIn = trigger === Trigger.HOVER
          ? this.constructor.Event.MOUSEENTER
          : this.constructor.Event.FOCUSIN
        const eventOut = trigger === Trigger.HOVER
          ? this.constructor.Event.MOUSELEAVE
          : this.constructor.Event.FOCUSOUT

        $(this.element)
          .on(
            eventIn,
            this.config.selector,
            (event) => this._enter(event)
          )
          .on(
            eventOut,
            this.config.selector,
            (event) => this._leave(event)
          )
      }
    })

    $(this.element).closest('.modal').on(
      'hide.bs.modal',
      () => {
        if (this.element) {
          this.hide()
        }
      }
    )

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

  _fixTitle() {
    const titleType = typeof this.element.getAttribute('data-original-title')

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

      this.element.setAttribute('title', '')
    }
  }

  _enter(event, context) {
    const dataKey = this.constructor.DATA_KEY
    context = context || $(event.currentTarget).data(dataKey)

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

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

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

    clearTimeout(context._timeout)

    context._hoverState = HoverState.SHOW

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

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

  _leave(event, context) {
    const dataKey = this.constructor.DATA_KEY
    context = context || $(event.currentTarget).data(dataKey)

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

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

    if (context._isWithActiveTrigger()) {
      return
    }

    clearTimeout(context._timeout)

    context._hoverState = HoverState.OUT

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

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

  _isWithActiveTrigger() {
    for (const trigger in this._activeTrigger) {
      if (this._activeTrigger[trigger]) {
        return true
      }
    }

    return false
  }

  _getConfig(config) {
    config = {
      ...this.constructor.Default,
      ...$(this.element).data(),
      ...typeof config === 'object' && config ? config : {}
    }

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

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

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

    Util.typeCheckConfig(
      NAME,
      config,
      this.constructor.DefaultType
    )

    return config
  }

  _getDelegateConfig() {
    const config = {}

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

    return config
  }

  _cleanTipClass() {
    const $tip = $(this.getTipElement())
    const tabClass = $tip.attr('class').match(BSCLS_PREFIX_REGEX)
    if (tabClass !== null && tabClass.length) {
      $tip.removeClass(tabClass.join(''))
    }
  }

  _handlePopperPlacementChange(popperData) {
    const popperInstance = popperData.instance
    this.tip = popperInstance.popper
    this._cleanTipClass()
    this.addAttachmentClass(this._getAttachment(popperData.placement))
  }

  _fixTransition() {
    const tip = this.getTipElement()
    const initConfigAnimation = this.config.animation

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

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

  // Static

  static _jQueryInterface(config) {
    return this.each(function () {
      let data = $(this).data(DATA_KEY)
      const _config = typeof config === 'object' && config

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

      if (!data) {
        data = new Tooltip(this, _config)
        $(this).data(DATA_KEY, data)
      }

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

/**
 * ------------------------------------------------------------------------
 * jQuery
 * ------------------------------------------------------------------------
 */

$.fn[NAME] = Tooltip._jQueryInterface
$.fn[NAME].Constructor = Tooltip
$.fn[NAME].noConflict = () => {
  $.fn[NAME] = JQUERY_NO_CONFLICT
  return Tooltip._jQueryInterface
}

export default Tooltip

# sourcesContent[]
/**
 * --------------------------------------------------------------------------
 * Bootstrap (v4.2.1): popover.js
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 * --------------------------------------------------------------------------
 */

import $ from 'jquery'
import Tooltip from './tooltip'

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

const NAME                = 'popover'
const VERSION             = '4.2.1'
const DATA_KEY            = 'bs.popover'
const EVENT_KEY           = `.${DATA_KEY}`
const JQUERY_NO_CONFLICT  = $.fn[NAME]
const CLASS_PREFIX        = 'bs-popover'
const BSCLS_PREFIX_REGEX  = new RegExp(`(^|\\s)${CLASS_PREFIX}\\S+`, 'g')

const Default = {
  ...Tooltip.Default,
  placement : 'right',
  trigger   : 'click',
  content   : '',
  template  : '<div class="popover" role="tooltip">' +
              '<div class="arrow"></div>' +
              '<h3 class="popover-header"></h3>' +
              '<div class="popover-body"></div></div>'
}

const DefaultType = {
  ...Tooltip.DefaultType,
  content : '(string|element|function)'
}

const ClassName = {
  FADE : 'fade',
  SHOW : 'show'
}

const Selector = {
  TITLE   : '.popover-header',
  CONTENT : '.popover-body'
}

const Event = {
  HIDE       : `hide${EVENT_KEY}`,
  HIDDEN     : `hidden${EVENT_KEY}`,
  SHOW       : `show${EVENT_KEY}`,
  SHOWN      : `shown${EVENT_KEY}`,
  INSERTED   : `inserted${EVENT_KEY}`,
  CLICK      : `click${EVENT_KEY}`,
  FOCUSIN    : `focusin${EVENT_KEY}`,
  FOCUSOUT   : `focusout${EVENT_KEY}`,
  MOUSEENTER : `mouseenter${EVENT_KEY}`,
  MOUSELEAVE : `mouseleave${EVENT_KEY}`
}

/**
 * ------------------------------------------------------------------------
 * Class Definition
 * ------------------------------------------------------------------------
 */

class Popover extends Tooltip {
  // Getters

  static get VERSION() {
    return VERSION
  }

  static get Default() {
    return Default
  }

  static get NAME() {
    return NAME
  }

  static get DATA_KEY() {
    return DATA_KEY
  }

  static get Event() {
    return Event
  }

  static get EVENT_KEY() {
    return EVENT_KEY
  }

  static get DefaultType() {
    return DefaultType
  }

  // Overrides

  isWithContent() {
    return this.getTitle() || this._getContent()
  }

  addAttachmentClass(attachment) {
    $(this.getTipElement()).addClass(`${CLASS_PREFIX}-${attachment}`)
  }

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

  setContent() {
    const $tip = $(this.getTipElement())

    // We use append for html objects to maintain js events
    this.setElementContent($tip.find(Selector.TITLE), this.getTitle())
    let content = this._getContent()
    if (typeof content === 'function') {
      content = content.call(this.element)
    }
    this.setElementContent($tip.find(Selector.CONTENT), content)

    $tip.removeClass(`${ClassName.FADE} ${ClassName.SHOW}`)
  }

  // Private

  _getContent() {
    return this.element.getAttribute('data-content') ||
      this.config.content
  }

  _cleanTipClass() {
    const $tip = $(this.getTipElement())
    const tabClass = $tip.attr('class').match(BSCLS_PREFIX_REGEX)
    if (tabClass !== null && tabClass.length > 0) {
      $tip.removeClass(tabClass.join(''))
    }
  }

  // Static

  static _jQueryInterface(config) {
    return this.each(function () {
      let data = $(this).data(DATA_KEY)
      const _config = typeof config === 'object' ? config : null

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

      if (!data) {
        data = new Popover(this, _config)
        $(this).data(DATA_KEY, data)
      }

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

/**
 * ------------------------------------------------------------------------
 * jQuery
 * ------------------------------------------------------------------------
 */

$.fn[NAME] = Popover._jQueryInterface
$.fn[NAME].Constructor = Popover
$.fn[NAME].noConflict = () => {
  $.fn[NAME] = JQUERY_NO_CONFLICT
  return Popover._jQueryInterface
}

export default Popover

# sourcesContent[]
import $ from 'jquery'
import Alert from './alert'
import Button from './button'
import Carousel from './carousel'
import Collapse from './collapse'
import Dropdown from './dropdown'
import Modal from './modal'
import Popover from './popover'
import Scrollspy from './scrollspy'
import Tab from './tab'
import Toast from './toast'
import Tooltip from './tooltip'
import Util from './util'

/**
 * --------------------------------------------------------------------------
 * Bootstrap (v4.2.1): index.js
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 * --------------------------------------------------------------------------
 */

(() => {
  if (typeof $ === 'undefined') {
    throw new TypeError('Bootstrap\'s JavaScript requires jQuery. jQuery must be included before Bootstrap\'s JavaScript.')
  }

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

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

export {
  Util,
  Alert,
  Button,
  Carousel,
  Collapse,
  Dropdown,
  Modal,
  Popover,
  Scrollspy,
  Tab,
  Toast,
  Tooltip
}