carousel.js

/*!
  * Bootstrap carousel.js v5.0.0-alpha1 (https://getbootstrap.com/)
  * Copyright 2011-2020 The Bootstrap Authors (https://github.com/twbs/bootstrap/graphs/contributors)
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
  */
(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory(require('./dom/data.js'), require('./dom/event-handler.js'), require('./dom/manipulator.js'), require('./dom/selector-engine.js')) :
  typeof define === 'function' && define.amd ? define(['./dom/data.js', './dom/event-handler.js', './dom/manipulator.js', './dom/selector-engine.js'], factory) :
  (global = global || self, global.Carousel = factory(global.Data, global.EventHandler, global.Manipulator, global.SelectorEngine));
}(this, (function (Data, EventHandler, Manipulator, SelectorEngine) { 'use strict';

  Data = Data && Object.prototype.hasOwnProperty.call(Data, 'default') ? Data['default'] : Data;
  EventHandler = EventHandler && Object.prototype.hasOwnProperty.call(EventHandler, 'default') ? EventHandler['default'] : EventHandler;
  Manipulator = Manipulator && Object.prototype.hasOwnProperty.call(Manipulator, 'default') ? Manipulator['default'] : Manipulator;
  SelectorEngine = SelectorEngine && Object.prototype.hasOwnProperty.call(SelectorEngine, 'default') ? SelectorEngine['default'] : SelectorEngine;

  /**
   * --------------------------------------------------------------------------
   * Bootstrap (v5.0.0-alpha1): util/index.js
   * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
   * --------------------------------------------------------------------------
   */
  var MILLISECONDS_MULTIPLIER = 1000;
  var TRANSITION_END = 'transitionend'; // Shoutout AngusCroll (https://goo.gl/pxwQGp)

  var toType = function toType(obj) {
    if (obj === null || obj === undefined) {
      return "" + obj;
    }

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

  var getSelector = function getSelector(element) {
    var selector = element.getAttribute('data-target');

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

    return selector;
  };

  var getElementFromSelector = function getElementFromSelector(element) {
    var selector = getSelector(element);
    return selector ? document.querySelector(selector) : null;
  };

  var getTransitionDurationFromElement = function getTransitionDurationFromElement(element) {
    if (!element) {
      return 0;
    } // Get transition-duration of the element


    var _window$getComputedSt = window.getComputedStyle(element),
        transitionDuration = _window$getComputedSt.transitionDuration,
        transitionDelay = _window$getComputedSt.transitionDelay;

    var floatTransitionDuration = parseFloat(transitionDuration);
    var floatTransitionDelay = parseFloat(transitionDelay); // Return 0 if element or transition duration is not found

    if (!floatTransitionDuration && !floatTransitionDelay) {
      return 0;
    } // If multiple durations are defined, take the first


    transitionDuration = transitionDuration.split(',')[0];
    transitionDelay = transitionDelay.split(',')[0];
    return (parseFloat(transitionDuration) + parseFloat(transitionDelay)) * MILLISECONDS_MULTIPLIER;
  };

  var triggerTransitionEnd = function triggerTransitionEnd(element) {
    element.dispatchEvent(new Event(TRANSITION_END));
  };

  var isElement = function isElement(obj) {
    return (obj[0] || obj).nodeType;
  };

  var emulateTransitionEnd = function emulateTransitionEnd(element, duration) {
    var called = false;
    var durationPadding = 5;
    var emulatedDuration = duration + durationPadding;

    function listener() {
      called = true;
      element.removeEventListener(TRANSITION_END, listener);
    }

    element.addEventListener(TRANSITION_END, listener);
    setTimeout(function () {
      if (!called) {
        triggerTransitionEnd(element);
      }
    }, emulatedDuration);
  };

  var typeCheckConfig = function typeCheckConfig(componentName, config, configTypes) {
    Object.keys(configTypes).forEach(function (property) {
      var expectedTypes = configTypes[property];
      var value = config[property];
      var valueType = value && isElement(value) ? 'element' : toType(value);

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

  var isVisible = function isVisible(element) {
    if (!element) {
      return false;
    }

    if (element.style && element.parentNode && element.parentNode.style) {
      var elementStyle = getComputedStyle(element);
      var parentNodeStyle = getComputedStyle(element.parentNode);
      return elementStyle.display !== 'none' && parentNodeStyle.display !== 'none' && elementStyle.visibility !== 'hidden';
    }

    return false;
  };

  var reflow = function reflow(element) {
    return element.offsetHeight;
  };

  var getjQuery = function getjQuery() {
    var _window = window,
        jQuery = _window.jQuery;

    if (jQuery && !document.body.hasAttribute('data-no-jquery')) {
      return jQuery;
    }

    return null;
  };

  function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; }

  function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(Object(source), true).forEach(function (key) { _defineProperty(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }

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

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

  function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
  /**
   * ------------------------------------------------------------------------
   * Constants
   * ------------------------------------------------------------------------
   */

  var NAME = 'carousel';
  var VERSION = '5.0.0-alpha1';
  var DATA_KEY = 'bs.carousel';
  var EVENT_KEY = "." + DATA_KEY;
  var DATA_API_KEY = '.data-api';
  var ARROW_LEFT_KEY = 'ArrowLeft';
  var ARROW_RIGHT_KEY = 'ArrowRight';
  var TOUCHEVENT_COMPAT_WAIT = 500; // Time for mouse compat events to fire after touch

  var SWIPE_THRESHOLD = 40;
  var Default = {
    interval: 5000,
    keyboard: true,
    slide: false,
    pause: 'hover',
    wrap: true,
    touch: true
  };
  var DefaultType = {
    interval: '(number|boolean)',
    keyboard: 'boolean',
    slide: '(boolean|string)',
    pause: '(string|boolean)',
    wrap: 'boolean',
    touch: 'boolean'
  };
  var DIRECTION_NEXT = 'next';
  var DIRECTION_PREV = 'prev';
  var DIRECTION_LEFT = 'left';
  var DIRECTION_RIGHT = 'right';
  var EVENT_SLIDE = "slide" + EVENT_KEY;
  var EVENT_SLID = "slid" + EVENT_KEY;
  var EVENT_KEYDOWN = "keydown" + EVENT_KEY;
  var EVENT_MOUSEENTER = "mouseenter" + EVENT_KEY;
  var EVENT_MOUSELEAVE = "mouseleave" + EVENT_KEY;
  var EVENT_TOUCHSTART = "touchstart" + EVENT_KEY;
  var EVENT_TOUCHMOVE = "touchmove" + EVENT_KEY;
  var EVENT_TOUCHEND = "touchend" + EVENT_KEY;
  var EVENT_POINTERDOWN = "pointerdown" + EVENT_KEY;
  var EVENT_POINTERUP = "pointerup" + EVENT_KEY;
  var EVENT_DRAG_START = "dragstart" + EVENT_KEY;
  var EVENT_LOAD_DATA_API = "load" + EVENT_KEY + DATA_API_KEY;
  var EVENT_CLICK_DATA_API = "click" + EVENT_KEY + DATA_API_KEY;
  var CLASS_NAME_CAROUSEL = 'carousel';
  var CLASS_NAME_ACTIVE = 'active';
  var CLASS_NAME_SLIDE = 'slide';
  var CLASS_NAME_RIGHT = 'carousel-item-right';
  var CLASS_NAME_LEFT = 'carousel-item-left';
  var CLASS_NAME_NEXT = 'carousel-item-next';
  var CLASS_NAME_PREV = 'carousel-item-prev';
  var CLASS_NAME_POINTER_EVENT = 'pointer-event';
  var SELECTOR_ACTIVE = '.active';
  var SELECTOR_ACTIVE_ITEM = '.active.carousel-item';
  var SELECTOR_ITEM = '.carousel-item';
  var SELECTOR_ITEM_IMG = '.carousel-item img';
  var SELECTOR_NEXT_PREV = '.carousel-item-next, .carousel-item-prev';
  var SELECTOR_INDICATORS = '.carousel-indicators';
  var SELECTOR_DATA_SLIDE = '[data-slide], [data-slide-to]';
  var SELECTOR_DATA_RIDE = '[data-ride="carousel"]';
  var PointerType = {
    TOUCH: 'touch',
    PEN: 'pen'
  };
  /**
   * ------------------------------------------------------------------------
   * Class Definition
   * ------------------------------------------------------------------------
   */

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

      this._addEventListeners();

      Data.setData(element, DATA_KEY, this);
    } // Getters


    var _proto = Carousel.prototype;

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

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

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

    _proto.pause = function 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;
    };

    _proto.cycle = function 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._interval = setInterval((document.visibilityState ? this.nextWhenVisible : this.next).bind(this), this._config.interval);
      }
    };

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

      this._activeElement = SelectorEngine.findOne(SELECTOR_ACTIVE_ITEM, this._element);

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

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

      if (this._isSliding) {
        EventHandler.one(this._element, EVENT_SLID, function () {
          return _this.to(index);
        });
        return;
      }

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

      var direction = index > activeIndex ? DIRECTION_NEXT : DIRECTION_PREV;

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

    _proto.dispose = function dispose() {
      EventHandler.off(this._element, EVENT_KEY);
      Data.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
    ;

    _proto._getConfig = function _getConfig(config) {
      config = _objectSpread(_objectSpread({}, Default), config);
      typeCheckConfig(NAME, config, DefaultType);
      return config;
    };

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

      if (absDeltax <= SWIPE_THRESHOLD) {
        return;
      }

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

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


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

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

      if (this._config.keyboard) {
        EventHandler.on(this._element, EVENT_KEYDOWN, function (event) {
          return _this2._keydown(event);
        });
      }

      if (this._config.pause === 'hover') {
        EventHandler.on(this._element, EVENT_MOUSEENTER, function (event) {
          return _this2.pause(event);
        });
        EventHandler.on(this._element, EVENT_MOUSELEAVE, function (event) {
          return _this2.cycle(event);
        });
      }

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

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

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

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

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

        _this3._handleSwipe();

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

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

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

      SelectorEngine.find(SELECTOR_ITEM_IMG, this._element).forEach(function (itemImg) {
        EventHandler.on(itemImg, EVENT_DRAG_START, function (e) {
          return e.preventDefault();
        });
      });

      if (this._pointerEvent) {
        EventHandler.on(this._element, EVENT_POINTERDOWN, function (event) {
          return start(event);
        });
        EventHandler.on(this._element, EVENT_POINTERUP, function (event) {
          return end(event);
        });

        this._element.classList.add(CLASS_NAME_POINTER_EVENT);
      } else {
        EventHandler.on(this._element, EVENT_TOUCHSTART, function (event) {
          return start(event);
        });
        EventHandler.on(this._element, EVENT_TOUCHMOVE, function (event) {
          return move(event);
        });
        EventHandler.on(this._element, EVENT_TOUCHEND, function (event) {
          return end(event);
        });
      }
    };

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

      switch (event.key) {
        case ARROW_LEFT_KEY:
          event.preventDefault();
          this.prev();
          break;

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

    _proto._getItemIndex = function _getItemIndex(element) {
      this._items = element && element.parentNode ? SelectorEngine.find(SELECTOR_ITEM, element.parentNode) : [];
      return this._items.indexOf(element);
    };

    _proto._getItemByDirection = function _getItemByDirection(direction, activeElement) {
      var isNextDirection = direction === DIRECTION_NEXT;
      var isPrevDirection = direction === DIRECTION_PREV;

      var activeIndex = this._getItemIndex(activeElement);

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

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

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

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

      var fromIndex = this._getItemIndex(SelectorEngine.findOne(SELECTOR_ACTIVE_ITEM, this._element));

      return EventHandler.trigger(this._element, EVENT_SLIDE, {
        relatedTarget: relatedTarget,
        direction: eventDirectionName,
        from: fromIndex,
        to: targetIndex
      });
    };

    _proto._setActiveIndicatorElement = function _setActiveIndicatorElement(element) {
      if (this._indicatorsElement) {
        var indicators = SelectorEngine.find(SELECTOR_ACTIVE, this._indicatorsElement);

        for (var i = 0; i < indicators.length; i++) {
          indicators[i].classList.remove(CLASS_NAME_ACTIVE);
        }

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

        if (nextIndicator) {
          nextIndicator.classList.add(CLASS_NAME_ACTIVE);
        }
      }
    };

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

      var activeElement = SelectorEngine.findOne(SELECTOR_ACTIVE_ITEM, this._element);

      var activeElementIndex = this._getItemIndex(activeElement);

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

      var nextElementIndex = this._getItemIndex(nextElement);

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

      if (direction === DIRECTION_NEXT) {
        directionalClassName = CLASS_NAME_LEFT;
        orderClassName = CLASS_NAME_NEXT;
        eventDirectionName = DIRECTION_LEFT;
      } else {
        directionalClassName = CLASS_NAME_RIGHT;
        orderClassName = CLASS_NAME_PREV;
        eventDirectionName = DIRECTION_RIGHT;
      }

      if (nextElement && nextElement.classList.contains(CLASS_NAME_ACTIVE)) {
        this._isSliding = false;
        return;
      }

      var 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);

      if (this._element.classList.contains(CLASS_NAME_SLIDE)) {
        nextElement.classList.add(orderClassName);
        reflow(nextElement);
        activeElement.classList.add(directionalClassName);
        nextElement.classList.add(directionalClassName);
        var nextElementInterval = parseInt(nextElement.getAttribute('data-interval'), 10);

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

        var transitionDuration = getTransitionDurationFromElement(activeElement);
        EventHandler.one(activeElement, TRANSITION_END, function () {
          nextElement.classList.remove(directionalClassName, orderClassName);
          nextElement.classList.add(CLASS_NAME_ACTIVE);
          activeElement.classList.remove(CLASS_NAME_ACTIVE, orderClassName, directionalClassName);
          _this4._isSliding = false;
          setTimeout(function () {
            EventHandler.trigger(_this4._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();
      }
    } // Static
    ;

    Carousel.carouselInterface = function carouselInterface(element, config) {
      var data = Data.getData(element, DATA_KEY);

      var _config = _objectSpread(_objectSpread({}, Default), Manipulator.getDataAttributes(element));

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

      var 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();
      }
    };

    Carousel.jQueryInterface = function jQueryInterface(config) {
      return this.each(function () {
        Carousel.carouselInterface(this, config);
      });
    };

    Carousel.dataApiClickHandler = function dataApiClickHandler(event) {
      var target = getElementFromSelector(this);

      if (!target || !target.classList.contains(CLASS_NAME_CAROUSEL)) {
        return;
      }

      var config = _objectSpread(_objectSpread({}, Manipulator.getDataAttributes(target)), Manipulator.getDataAttributes(this));

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

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

      Carousel.carouselInterface(target, config);

      if (slideIndex) {
        Data.getData(target, DATA_KEY).to(slideIndex);
      }

      event.preventDefault();
    };

    Carousel.getInstance = function getInstance(element) {
      return Data.getData(element, DATA_KEY);
    };

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

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


  EventHandler.on(document, EVENT_CLICK_DATA_API, SELECTOR_DATA_SLIDE, Carousel.dataApiClickHandler);
  EventHandler.on(window, EVENT_LOAD_DATA_API, function () {
    var carousels = SelectorEngine.find(SELECTOR_DATA_RIDE);

    for (var i = 0, len = carousels.length; i < len; i++) {
      Carousel.carouselInterface(carousels[i], Data.getData(carousels[i], DATA_KEY));
    }
  });
  var $ = getjQuery();
  /**
   * ------------------------------------------------------------------------
   * jQuery
   * ------------------------------------------------------------------------
   * add .carousel to jQuery only if jQuery is present
   */

  /* istanbul ignore if */

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

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

  return Carousel;

})));
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