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define(["exports", "jquery", "./util"], function (exports, _jquery, _util) {
  "use strict";

Object.defineProperty(exports, "__esModule", {
    value: true
  });

var _jquery2 = _interopRequireDefault(_jquery);

var _util2 = _interopRequireDefault(_util);

function _interopRequireDefault(obj) {
    return obj && obj.__esModule ? obj : {
      default: obj
    };
  }

return _typeof(obj);
  }

function _extends() {
    _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;
    };

return _extends.apply(this, arguments);
  }

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

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

/**
   * --------------------------------------------------------------------------
   * Bootstrap (v4.0.0): scrollspy.js
   * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
   * --------------------------------------------------------------------------
   */
  var ScrollSpy = function ($) {
    /**
     * ------------------------------------------------------------------------
     * Constants
     * ------------------------------------------------------------------------
     */
    var NAME = 'scrollspy';
    var VERSION = '4.0.0';
    var DATA_KEY = 'bs.scrollspy';
    var EVENT_KEY = ".".concat(DATA_KEY);
    var DATA_API_KEY = '.data-api';
    var JQUERY_NO_CONFLICT = $.fn[NAME];
    var Default = {
      offset: 10,
      method: 'auto',
      target: ''
    };
    var DefaultType = {
      offset: 'number',
      method: 'string',
      target: '(string|element)'
    };
    var Event = {
      ACTIVATE: "activate".concat(EVENT_KEY),
      SCROLL: "scroll".concat(EVENT_KEY),
      LOAD_DATA_API: "load".concat(EVENT_KEY).concat(DATA_API_KEY)
    };
    var ClassName = {
      DROPDOWN_ITEM: 'dropdown-item',
      DROPDOWN_MENU: 'dropdown-menu',
      ACTIVE: 'active'
    };
    var Selector = {
      DATA_SPY: '[data-spy="scroll"]',
      ACTIVE: '.active',
      NAV_LIST_GROUP: '.nav, .list-group',
      NAV_LINKS: '.nav-link',
      NAV_ITEMS: '.nav-item',
      LIST_ITEMS: '.list-group-item',
      DROPDOWN: '.dropdown',
      DROPDOWN_ITEMS: '.dropdown-item',
      DROPDOWN_TOGGLE: '.dropdown-toggle'
    };
    var OffsetMethod = {
      OFFSET: 'offset',
      POSITION: 'position'
      /**
       * ------------------------------------------------------------------------
       * Class Definition
       * ------------------------------------------------------------------------
       */

};

var ScrollSpy = function () {
      function ScrollSpy(element, config) {
        var _this = this;

_classCallCheck(this, ScrollSpy);

this._element = element;
        this._scrollElement = element.tagName === 'BODY' ? window : element;
        this._config = this._getConfig(config);
        this._selector = "".concat(this._config.target, " ").concat(Selector.NAV_LINKS, ",") + "".concat(this._config.target, " ").concat(Selector.LIST_ITEMS, ",") + "".concat(this._config.target, " ").concat(Selector.DROPDOWN_ITEMS);
        this._offsets = [];
        this._targets = [];
        this._activeTarget = null;
        this._scrollHeight = 0;
        $(this._scrollElement).on(Event.SCROLL, function (event) {
          return _this._process(event);
        });
        this.refresh();

this._process();
      } // Getters

_createClass(ScrollSpy, [{
        key: "refresh",
        value: function refresh() {
          var _this2 = this;

var autoMethod = this._scrollElement === this._scrollElement.window ? OffsetMethod.OFFSET : OffsetMethod.POSITION;
          var offsetMethod = this._config.method === 'auto' ? autoMethod : this._config.method;
          var offsetBase = offsetMethod === OffsetMethod.POSITION ? this._getScrollTop() : 0;
          this._offsets = [];
          this._targets = [];
          this._scrollHeight = this._getScrollHeight();
          var targets = $.makeArray($(this._selector));
          targets.map(function (element) {
            var target;

var targetSelector = _util2.default.getSelectorFromElement(element);

if (targetSelector) {
              target = $(targetSelector)[0];
            }

if (target) {
              var targetBCR = target.getBoundingClientRect();

if (targetBCR.width || targetBCR.height) {
                // TODO (fat): remove sketch reliance on jQuery position/offset
                return [$(target)[offsetMethod]().top + offsetBase, targetSelector];
              }
            }

return null;
          }).filter(function (item) {
            return item;
          }).sort(function (a, b) {
            return a[0] - b[0];
          }).forEach(function (item) {
            _this2._offsets.push(item[0]);

_this2._targets.push(item[1]);
          });
        }
      }, {
        key: "dispose",
        value: function dispose() {
          $.removeData(this._element, DATA_KEY);
          $(this._scrollElement).off(EVENT_KEY);
          this._element = null;
          this._scrollElement = null;
          this._config = null;
          this._selector = null;
          this._offsets = null;
          this._targets = null;
          this._activeTarget = null;
          this._scrollHeight = null;
        }
      }, {
        key: "_getConfig",
        value: function _getConfig(config) {
          config = _extends({}, Default, config);

if (typeof config.target !== 'string') {
            var id = $(config.target).attr('id');

if (!id) {
              id = _util2.default.getUID(NAME);
              $(config.target).attr('id', id);
            }

config.target = "#".concat(id);
          }

_util2.default.typeCheckConfig(NAME, config, DefaultType);

return config;
        }
      }, {
        key: "_getScrollTop",
        value: function _getScrollTop() {
          return this._scrollElement === window ? this._scrollElement.pageYOffset : this._scrollElement.scrollTop;
        }
      }, {
        key: "_getScrollHeight",
        value: function _getScrollHeight() {
          return this._scrollElement.scrollHeight || Math.max(document.body.scrollHeight, document.documentElement.scrollHeight);
        }
      }, {
        key: "_getOffsetHeight",
        value: function _getOffsetHeight() {
          return this._scrollElement === window ? window.innerHeight : this._scrollElement.getBoundingClientRect().height;
        }
      }, {
        key: "_process",
        value: function _process() {
          var scrollTop = this._getScrollTop() + this._config.offset;

var scrollHeight = this._getScrollHeight();

var maxScroll = this._config.offset + scrollHeight - this._getOffsetHeight();

if (this._scrollHeight !== scrollHeight) {
            this.refresh();
          }

if (scrollTop >= maxScroll) {
            var target = this._targets[this._targets.length - 1];

if (this._activeTarget !== target) {
              this._activate(target);
            }

return;
          }

if (this._activeTarget && scrollTop < this._offsets[0] && this._offsets[0] > 0) {
            this._activeTarget = null;

this._clear();

return;
          }

for (var i = this._offsets.length; i--;) {
            var isActiveTarget = this._activeTarget !== this._targets[i] && scrollTop >= this._offsets[i] && (typeof this._offsets[i + 1] === 'undefined' || scrollTop < this._offsets[i + 1]);

if (isActiveTarget) {
              this._activate(this._targets[i]);
            }
          }
        }
      }, {
        key: "_activate",
        value: function _activate(target) {
          this._activeTarget = target;

this._clear();

var queries = this._selector.split(','); // eslint-disable-next-line arrow-body-style

queries = queries.map(function (selector) {
            return "".concat(selector, "[data-target=\"").concat(target, "\"],") + "".concat(selector, "[href=\"").concat(target, "\"]");
          });
          var $link = $(queries.join(','));

if ($link.hasClass(ClassName.DROPDOWN_ITEM)) {
            $link.closest(Selector.DROPDOWN).find(Selector.DROPDOWN_TOGGLE).addClass(ClassName.ACTIVE);
            $link.addClass(ClassName.ACTIVE);
          } else {
            // Set triggered link as active
            $link.addClass(ClassName.ACTIVE); // Set triggered links parents as active
            // With both <ul> and <nav> markup a parent is the previous sibling of any nav ancestor

$link.parents(Selector.NAV_LIST_GROUP).prev("".concat(Selector.NAV_LINKS, ", ").concat(Selector.LIST_ITEMS)).addClass(ClassName.ACTIVE); // Handle special case when .nav-link is inside .nav-item

$link.parents(Selector.NAV_LIST_GROUP).prev(Selector.NAV_ITEMS).children(Selector.NAV_LINKS).addClass(ClassName.ACTIVE);
          }

$(this._scrollElement).trigger(Event.ACTIVATE, {
            relatedTarget: target
          });
        }
      }, {
        key: "_clear",
        value: function _clear() {
          $(this._selector).filter(Selector.ACTIVE).removeClass(ClassName.ACTIVE);
        }
      }], [{
        key: "_jQueryInterface",
        value: function _jQueryInterface(config) {
          return this.each(function () {
            var data = $(this).data(DATA_KEY);

var _config = _typeof(config) === 'object' && config;

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

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

data[config]();
            }
          });
        }
      }, {
        key: "VERSION",
        get: function get() {
          return VERSION;
        }
      }, {
        key: "Default",
        get: function get() {
          return Default;
        }
      }]);

return ScrollSpy;
    }();

/**
     * ------------------------------------------------------------------------
     * Data Api implementation
     * ------------------------------------------------------------------------
     */
    $(window).on(Event.LOAD_DATA_API, function () {
      var scrollSpys = $.makeArray($(Selector.DATA_SPY));

for (var i = scrollSpys.length; i--;) {
        var $spy = $(scrollSpys[i]);

ScrollSpy._jQueryInterface.call($spy, $spy.data());
      }
    });
    /**
     * ------------------------------------------------------------------------
     * jQuery
     * ------------------------------------------------------------------------
     */

$.fn[NAME] = ScrollSpy._jQueryInterface;
    $.fn[NAME].Constructor = ScrollSpy;

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

return ScrollSpy;
  }(_jquery2.default);

exports.default = ScrollSpy;
});