text: /**
   * --------------------------------------------------------------------------
   * Bootstrap (v5.0.0-beta3): carousel.js
   * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
   * --------------------------------------------------------------------------
   */
  
  import {
    defineJQueryPlugin,
    emulateTransitionEnd,
    getElementFromSelector,
    getTransitionDurationFromElement,
    isRTL,
    isVisible,
    reflow,
    triggerTransitionEnd,
    typeCheckConfig
  } from './util/index'
  import Data from './dom/data'
  import EventHandler from './dom/event-handler'
  import Manipulator from './dom/manipulator'
  import SelectorEngine from './dom/selector-engine'
  import BaseComponent from './base-component'
  
  /**
   * ------------------------------------------------------------------------
   * Constants
   * ------------------------------------------------------------------------
   */
  
  const NAME = 'carousel'
  const DATA_KEY = 'bs.carousel'
  const EVENT_KEY = `.${DATA_KEY}`
  const DATA_API_KEY = '.data-api'
  
  const ARROW_LEFT_KEY = 'ArrowLeft'
  const ARROW_RIGHT_KEY = 'ArrowRight'
  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 ORDER_NEXT = 'next'
  const ORDER_PREV = 'prev'
  const DIRECTION_LEFT = 'left'
  const DIRECTION_RIGHT = 'right'
  
  const EVENT_SLIDE = `slide${EVENT_KEY}`
  const EVENT_SLID = `slid${EVENT_KEY}`
  const EVENT_KEYDOWN = `keydown${EVENT_KEY}`
  const EVENT_MOUSEENTER = `mouseenter${EVENT_KEY}`
  const EVENT_MOUSELEAVE = `mouseleave${EVENT_KEY}`
  const EVENT_TOUCHSTART = `touchstart${EVENT_KEY}`
  const EVENT_TOUCHMOVE = `touchmove${EVENT_KEY}`
  const EVENT_TOUCHEND = `touchend${EVENT_KEY}`
  const EVENT_POINTERDOWN = `pointerdown${EVENT_KEY}`
  const EVENT_POINTERUP = `pointerup${EVENT_KEY}`
  const EVENT_DRAG_START = `dragstart${EVENT_KEY}`
  const EVENT_LOAD_DATA_API = `load${EVENT_KEY}${DATA_API_KEY}`
  const EVENT_CLICK_DATA_API = `click${EVENT_KEY}${DATA_API_KEY}`
  
  const CLASS_NAME_CAROUSEL = 'carousel'
  const CLASS_NAME_ACTIVE = 'active'
  const CLASS_NAME_SLIDE = 'slide'
  const CLASS_NAME_END = 'carousel-item-end'
  const CLASS_NAME_START = 'carousel-item-start'
  const CLASS_NAME_NEXT = 'carousel-item-next'
  const CLASS_NAME_PREV = 'carousel-item-prev'
  const CLASS_NAME_POINTER_EVENT = 'pointer-event'
  
  const SELECTOR_ACTIVE = '.active'
  const SELECTOR_ACTIVE_ITEM = '.active.carousel-item'
  const SELECTOR_ITEM = '.carousel-item'
  const SELECTOR_ITEM_IMG = '.carousel-item img'
  const SELECTOR_NEXT_PREV = '.carousel-item-next, .carousel-item-prev'
  const SELECTOR_INDICATORS = '.carousel-indicators'
  const SELECTOR_INDICATOR = '[data-bs-target]'
  const SELECTOR_DATA_SLIDE = '[data-bs-slide], [data-bs-slide-to]'
  const SELECTOR_DATA_RIDE = '[data-bs-ride="carousel"]'
  
  const POINTER_TYPE_TOUCH = 'touch'
  const POINTER_TYPE_PEN = 'pen'
  
  /**
   * ------------------------------------------------------------------------
   * Class Definition
   * ------------------------------------------------------------------------
   */
  class Carousel extends BaseComponent {
    constructor(element, config) {
      super(element)
  
      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._indicatorsElement = SelectorEngine.findOne(SELECTOR_INDICATORS, this._element)
      this._touchSupported = 'ontouchstart' in document.documentElement || navigator.maxTouchPoints > 0
      this._pointerEvent = Boolean(window.PointerEvent)
  
      this._addEventListeners()
    }
  
    // Getters
  
    static get Default() {
      return Default
    }
  
    static get DATA_KEY() {
      return DATA_KEY
    }
  
    // Public
  
    next() {
      if (!this._isSliding) {
        this._slide(ORDER_NEXT)
      }
    }
  
    nextWhenVisible() {
      // Don't call next when the page isn't visible
      // or the carousel or its parent isn't visible
      if (!document.hidden && isVisible(this._element)) {
        this.next()
      }
    }
  
    prev() {
      if (!this._isSliding) {
        this._slide(ORDER_PREV)
      }
    }
  
    pause(event) {
      if (!event) {
        this._isPaused = true
      }
  
      if (SelectorEngine.findOne(SELECTOR_NEXT_PREV, this._element)) {
        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 && this._config.interval && !this._isPaused) {
        this._updateInterval()
  
        this._interval = setInterval(
          (document.visibilityState ? this.nextWhenVisible : this.next).bind(this),
          this._config.interval
        )
      }
    }
  
    to(index) {
      this._activeElement = SelectorEngine.findOne(SELECTOR_ACTIVE_ITEM, this._element)
      const activeIndex = this._getItemIndex(this._activeElement)
  
      if (index > this._items.length - 1 || index < 0) {
        return
      }
  
      if (this._isSliding) {
        EventHandler.one(this._element, EVENT_SLID, () => this.to(index))
        return
      }
  
      if (activeIndex === index) {
        this.pause()
        this.cycle()
        return
      }
  
      const order = index > activeIndex ?
        ORDER_NEXT :
        ORDER_PREV
  
      this._slide(order, this._items[index])
    }
  
    dispose() {
      EventHandler.off(this._element, EVENT_KEY)
  
      this._items = null
      this._config = null
      this._interval = null
      this._isPaused = null
      this._isSliding = null
      this._activeElement = null
      this._indicatorsElement = null
  
      super.dispose()
    }
  
    // Private
  
    _getConfig(config) {
      config = {
        ...Default,
        ...config
      }
      typeCheckConfig(NAME, config, DefaultType)
      return config
    }
  
    _handleSwipe() {
      const absDeltax = Math.abs(this.touchDeltaX)
  
      if (absDeltax <= SWIPE_THRESHOLD) {
        return
      }
  
      const direction = absDeltax / this.touchDeltaX
  
      this.touchDeltaX = 0
  
      if (!direction) {
        return
      }
  
      this._slide(direction > 0 ? DIRECTION_RIGHT : DIRECTION_LEFT)
    }
  
    _addEventListeners() {
      if (this._config.keyboard) {
        EventHandler.on(this._element, EVENT_KEYDOWN, event => this._keydown(event))
      }
  
      if (this._config.pause === 'hover') {
        EventHandler.on(this._element, EVENT_MOUSEENTER, event => this.pause(event))
        EventHandler.on(this._element, EVENT_MOUSELEAVE, event => this.cycle(event))
      }
  
      if (this._config.touch && this._touchSupported) {
        this._addTouchEventListeners()
      }
    }
  
    _addTouchEventListeners() {
      const start = event => {
        if (this._pointerEvent && (event.pointerType === POINTER_TYPE_PEN || event.pointerType === POINTER_TYPE_TOUCH)) {
          this.touchStartX = event.clientX
        } else if (!this._pointerEvent) {
          this.touchStartX = event.touches[0].clientX
        }
      }
  
      const move = event => {
        // ensure swiping with one touch and not pinching
        this.touchDeltaX = event.touches && event.touches.length > 1 ?
          0 :
          event.touches[0].clientX - this.touchStartX
      }
  
      const end = event => {
        if (this._pointerEvent && (event.pointerType === POINTER_TYPE_PEN || event.pointerType === POINTER_TYPE_TOUCH)) {
          this.touchDeltaX = event.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)
        }
      }
  
      SelectorEngine.find(SELECTOR_ITEM_IMG, this._element).forEach(itemImg => {
        EventHandler.on(itemImg, EVENT_DRAG_START, e => e.preventDefault())
      })
  
      if (this._pointerEvent) {
        EventHandler.on(this._element, EVENT_POINTERDOWN, event => start(event))
        EventHandler.on(this._element, EVENT_POINTERUP, event => end(event))
  
        this._element.classList.add(CLASS_NAME_POINTER_EVENT)
      } else {
        EventHandler.on(this._element, EVENT_TOUCHSTART, event => start(event))
        EventHandler.on(this._element, EVENT_TOUCHMOVE, event => move(event))
        EventHandler.on(this._element, EVENT_TOUCHEND, event => end(event))
      }
    }
  
    _keydown(event) {
      if (/input|textarea/i.test(event.target.tagName)) {
        return
      }
  
      if (event.key === ARROW_LEFT_KEY) {
        event.preventDefault()
        this._slide(DIRECTION_RIGHT)
      } else if (event.key === ARROW_RIGHT_KEY) {
        event.preventDefault()
        this._slide(DIRECTION_LEFT)
      }
    }
  
    _getItemIndex(element) {
      this._items = element && element.parentNode ?
        SelectorEngine.find(SELECTOR_ITEM, element.parentNode) :
        []
  
      return this._items.indexOf(element)
    }
  
    _getItemByOrder(order, activeElement) {
      const isNext = order === ORDER_NEXT
      const isPrev = order === ORDER_PREV
      const activeIndex = this._getItemIndex(activeElement)
      const lastItemIndex = this._items.length - 1
      const isGoingToWrap = (isPrev && activeIndex === 0) || (isNext && activeIndex === lastItemIndex)
  
      if (isGoingToWrap && !this._config.wrap) {
        return activeElement
      }
  
      const delta = isPrev ? -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(SelectorEngine.findOne(SELECTOR_ACTIVE_ITEM, this._element))
  
      return EventHandler.trigger(this._element, EVENT_SLIDE, {
        relatedTarget,
        direction: eventDirectionName,
        from: fromIndex,
        to: targetIndex
      })
    }
  
    _setActiveIndicatorElement(element) {
      if (this._indicatorsElement) {
        const activeIndicator = SelectorEngine.findOne(SELECTOR_ACTIVE, this._indicatorsElement)
  
        activeIndicator.classList.remove(CLASS_NAME_ACTIVE)
        activeIndicator.removeAttribute('aria-current')
  
        const indicators = SelectorEngine.find(SELECTOR_INDICATOR, this._indicatorsElement)
  
        for (let i = 0; i < indicators.length; i++) {
          if (Number.parseInt(indicators[i].getAttribute('data-bs-slide-to'), 10) === this._getItemIndex(element)) {
            indicators[i].classList.add(CLASS_NAME_ACTIVE)
            indicators[i].setAttribute('aria-current', 'true')
            break
          }
        }
      }
    }
  
    _updateInterval() {
      const element = this._activeElement || SelectorEngine.findOne(SELECTOR_ACTIVE_ITEM, this._element)
  
      if (!element) {
        return
      }
  
      const elementInterval = Number.parseInt(element.getAttribute('data-bs-interval'), 10)
  
      if (elementInterval) {
        this._config.defaultInterval = this._config.defaultInterval || this._config.interval
        this._config.interval = elementInterval
      } else {
        this._config.interval = this._config.defaultInterval || this._config.interval
      }
    }
  
    _slide(directionOrOrder, element) {
      const order = this._directionToOrder(directionOrOrder)
      const activeElement = SelectorEngine.findOne(SELECTOR_ACTIVE_ITEM, this._element)
      const activeElementIndex = this._getItemIndex(activeElement)
      const nextElement = element || this._getItemByOrder(order, activeElement)
  
      const nextElementIndex = this._getItemIndex(nextElement)
      const isCycling = Boolean(this._interval)
  
      const isNext = order === ORDER_NEXT
      const directionalClassName = isNext ? CLASS_NAME_START : CLASS_NAME_END
      const orderClassName = isNext ? CLASS_NAME_NEXT : CLASS_NAME_PREV
      const eventDirectionName = this._orderToDirection(order)
  
      if (nextElement && nextElement.classList.contains(CLASS_NAME_ACTIVE)) {
        this._isSliding = false
        return
      }
  
      const slideEvent = this._triggerSlideEvent(nextElement, eventDirectionName)
      if (slideEvent.defaultPrevented) {
        return
      }
  
      if (!activeElement || !nextElement) {
        // Some weirdness is happening, so we bail
        return
      }
  
      this._isSliding = true
  
      if (isCycling) {
        this.pause()
      }
  
      this._setActiveIndicatorElement(nextElement)
      this._activeElement = nextElement
  
      if (this._element.classList.contains(CLASS_NAME_SLIDE)) {
        nextElement.classList.add(orderClassName)
  
        reflow(nextElement)
  
        activeElement.classList.add(directionalClassName)
        nextElement.classList.add(directionalClassName)
  
        const transitionDuration = getTransitionDurationFromElement(activeElement)
  
        EventHandler.one(activeElement, 'transitionend', () => {
          nextElement.classList.remove(directionalClassName, orderClassName)
          nextElement.classList.add(CLASS_NAME_ACTIVE)
  
          activeElement.classList.remove(CLASS_NAME_ACTIVE, orderClassName, directionalClassName)
  
          this._isSliding = false
  
          setTimeout(() => {
            EventHandler.trigger(this._element, EVENT_SLID, {
              relatedTarget: nextElement,
              direction: eventDirectionName,
              from: activeElementIndex,
              to: nextElementIndex
            })
          }, 0)
        })
  
        emulateTransitionEnd(activeElement, transitionDuration)
      } else {
        activeElement.classList.remove(CLASS_NAME_ACTIVE)
        nextElement.classList.add(CLASS_NAME_ACTIVE)
  
        this._isSliding = false
        EventHandler.trigger(this._element, EVENT_SLID, {
          relatedTarget: nextElement,
          direction: eventDirectionName,
          from: activeElementIndex,
          to: nextElementIndex
        })
      }
  
      if (isCycling) {
        this.cycle()
      }
    }
  
    _directionToOrder(direction) {
      if (![DIRECTION_RIGHT, DIRECTION_LEFT].includes(direction)) {
        return direction
      }
  
      if (isRTL()) {
        return direction === DIRECTION_LEFT ? ORDER_PREV : ORDER_NEXT
      }
  
      return direction === DIRECTION_LEFT ? ORDER_NEXT : ORDER_PREV
    }
  
    _orderToDirection(order) {
      if (![ORDER_NEXT, ORDER_PREV].includes(order)) {
        return order
      }
  
      if (isRTL()) {
        return order === ORDER_PREV ? DIRECTION_LEFT : DIRECTION_RIGHT
      }
  
      return order === ORDER_PREV ? DIRECTION_RIGHT : DIRECTION_LEFT
    }
  
    // Static
  
    static carouselInterface(element, config) {
      let data = Data.get(element, DATA_KEY)
      let _config = {
        ...Default,
        ...Manipulator.getDataAttributes(element)
      }
  
      if (typeof config === 'object') {
        _config = {
          ..._config,
          ...config
        }
      }
  
      const action = typeof config === 'string' ? config : _config.slide
  
      if (!data) {
        data = new Carousel(element, _config)
      }
  
      if (typeof config === 'number') {
        data.to(config)
      } else if (typeof action === 'string') {
        if (typeof data[action] === 'undefined') {
          throw new TypeError(`No method named "${action}"`)
        }
  
        data[action]()
      } else if (_config.interval && _config.ride) {
        data.pause()
        data.cycle()
      }
    }
  
    static jQueryInterface(config) {
      return this.each(function () {
        Carousel.carouselInterface(this, config)
      })
    }
  
    static dataApiClickHandler(event) {
      const target = getElementFromSelector(this)
  
      if (!target || !target.classList.contains(CLASS_NAME_CAROUSEL)) {
        return
      }
  
      const config = {
        ...Manipulator.getDataAttributes(target),
        ...Manipulator.getDataAttributes(this)
      }
      const slideIndex = this.getAttribute('data-bs-slide-to')
  
      if (slideIndex) {
        config.interval = false
      }
  
      Carousel.carouselInterface(target, config)
  
      if (slideIndex) {
        Data.get(target, DATA_KEY).to(slideIndex)
      }
  
      event.preventDefault()
    }
  }
  
  /**
   * ------------------------------------------------------------------------
   * Data Api implementation
   * ------------------------------------------------------------------------
   */
  
  EventHandler.on(document, EVENT_CLICK_DATA_API, SELECTOR_DATA_SLIDE, Carousel.dataApiClickHandler)
  
  EventHandler.on(window, EVENT_LOAD_DATA_API, () => {
    const carousels = SelectorEngine.find(SELECTOR_DATA_RIDE)
  
    for (let i = 0, len = carousels.length; i < len; i++) {
      Carousel.carouselInterface(carousels[i], Data.get(carousels[i], DATA_KEY))
    }
  })
  
  /**
   * ------------------------------------------------------------------------
   * jQuery
   * ------------------------------------------------------------------------
   * add .Carousel to jQuery only if jQuery is present
   */
  
  defineJQueryPlugin(NAME, Carousel)
  
  export default Carousel
  