dist

dist/js/bootstrap.js

@@ -9,10 +9,10 @@
   (factory((global.bootstrap = {}),global.jQuery,global.Popper));
 }(this, (function (exports,$,Popper) { 'use strict';
 
-$ = $ && $.hasOwnProperty('default') ? $['default'] : $;
+  $ = $ && $.hasOwnProperty('default') ? $['default'] : $;
-Popper = Popper && Popper.hasOwnProperty('default') ? Popper['default'] : Popper;
+  Popper = Popper && Popper.hasOwnProperty('default') ? Popper['default'] : Popper;
 
-function _defineProperties(target, props) {
+  function _defineProperties(target, props) {
     for (var i = 0; i < props.length; i++) {
       var descriptor = props[i];
       descriptor.enumerable = descriptor.enumerable || false;
@@ -20,53 +20,70 @@ function _defineProperties(target, props) {
       if ("value" in descriptor) descriptor.writable = true;
       Object.defineProperty(target, descriptor.key, descriptor);
     }
-}
+  }
 
-function _createClass(Constructor, protoProps, staticProps) {
+  function _createClass(Constructor, protoProps, staticProps) {
     if (protoProps) _defineProperties(Constructor.prototype, protoProps);
     if (staticProps) _defineProperties(Constructor, staticProps);
     return Constructor;
-}
+  }
 
-function _extends() {
+  function _defineProperty(obj, key, value) {
-  _extends = Object.assign || function (target) {
+    if (key in obj) {
+      Object.defineProperty(obj, key, {
+        value: value,
+        enumerable: true,
+        configurable: true,
+        writable: true
+      });
+    } else {
+      obj[key] = value;
+    }
+
+    return obj;
+  }
+
+  function _objectSpread(target) {
     for (var i = 1; i < arguments.length; i++) {
-      var source = arguments[i];
+      var source = arguments[i] != null ? arguments[i] : {};
+      var ownKeys = Object.keys(source);
 
-      for (var key in source) {
+      if (typeof Object.getOwnPropertySymbols === 'function') {
-        if (Object.prototype.hasOwnProperty.call(source, key)) {
+        ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) {
-          target[key] = source[key];
+          return Object.getOwnPropertyDescriptor(source, sym).enumerable;
-        }
+        }));
       }
+
+      ownKeys.forEach(function (key) {
+        _defineProperty(target, key, source[key]);
+      });
     }
 
     return target;
-  };
+  }
 
-  return _extends.apply(this, arguments);
+  function _inheritsLoose(subClass, superClass) {
-}
-
-function _inheritsLoose(subClass, superClass) {
     subClass.prototype = Object.create(superClass.prototype);
     subClass.prototype.constructor = subClass;
     subClass.__proto__ = superClass;
-}
+  }
 
-/**
+  /**
    * --------------------------------------------------------------------------
    * Bootstrap (v4.0.0): util.js
    * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
    * --------------------------------------------------------------------------
    */
 
-var Util = function ($$$1) {
+  var Util = function ($$$1) {
     /**
      * ------------------------------------------------------------------------
      * Private TransitionEnd Helpers
      * ------------------------------------------------------------------------
      */
-  var transition = false;
+    var TRANSITION_END = 'transitionend';
-  var MAX_UID = 1000000; // Shoutout AngusCroll (https://goo.gl/pxwQGp)
+    var MAX_UID = 1000000;
+    var MILLISECONDS_MULTIPLIER = 1000; // Shoutout AngusCroll (https://goo.gl/pxwQGp)
 
     function toType(obj) {
       return {}.toString.call(obj).match(/\s([a-z]+)/i)[1].toLowerCase();
@@ -74,8 +91,8 @@ var Util = function ($$$1) {
 
     function getSpecialTransitionEndEvent() {
       return {
-      bindType: transition.end,
+        bindType: TRANSITION_END,
-      delegateType: transition.end,
+        delegateType: TRANSITION_END,
         handle: function handle(event) {
           if ($$$1(event.target).is(this)) {
             return event.handleObj.handler.apply(this, arguments); // eslint-disable-line prefer-rest-params
@@ -86,16 +103,6 @@ var Util = function ($$$1) {
       };
     }
 
-  function transitionEndTest() {
-    if (typeof window !== 'undefined' && window.QUnit) {
-      return false;
-    }
-
-    return {
-      end: 'transitionend'
-    };
-  }
-
     function transitionEndEmulator(duration) {
       var _this = this;
 
@@ -112,13 +119,9 @@ var Util = function ($$$1) {
     }
 
     function setTransitionEndSupport() {
-    transition = transitionEndTest();
       $$$1.fn.emulateTransitionEnd = transitionEndEmulator;
-
-    if (Util.supportsTransitionEnd()) {
       $$$1.event.special[Util.TRANSITION_END] = getSpecialTransitionEndEvent();
     }
-  }
     /**
      * --------------------------------------------------------------------------
      * Public Util Api
@@ -150,14 +153,32 @@ var Util = function ($$$1) {
           return null;
         }
       },
+      getTransitionDurationFromElement: function getTransitionDurationFromElement(element) {
+        if (!element) {
+          return 0;
+        } // Get transition-duration of the element
+
+
+        var transitionDuration = $$$1(element).css('transition-duration');
+        var floatTransitionDuration = parseFloat(transitionDuration); // Return 0 if element or transition duration is not found
+
+        if (!floatTransitionDuration) {
+          return 0;
+        } // If multiple durations are defined, take the first
+
+
+        transitionDuration = transitionDuration.split(',')[0];
+        return parseFloat(transitionDuration) * MILLISECONDS_MULTIPLIER;
+      },
       reflow: function reflow(element) {
         return element.offsetHeight;
       },
       triggerTransitionEnd: function triggerTransitionEnd(element) {
-      $$$1(element).trigger(transition.end);
+        $$$1(element).trigger(TRANSITION_END);
       },
+      // TODO: Remove in v5
       supportsTransitionEnd: function supportsTransitionEnd() {
-      return Boolean(transition);
+        return Boolean(TRANSITION_END);
       },
       isElement: function isElement(obj) {
         return (obj[0] || obj).nodeType;
@@ -178,16 +199,16 @@ var Util = function ($$$1) {
     };
     setTransitionEndSupport();
     return Util;
-}($);
+  }($);
 
-/**
+  /**
    * --------------------------------------------------------------------------
    * Bootstrap (v4.0.0): alert.js
    * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
    * --------------------------------------------------------------------------
    */
 
-var Alert = function ($$$1) {
+  var Alert = function ($$$1) {
     /**
      * ------------------------------------------------------------------------
      * Constants
@@ -199,7 +220,6 @@ var Alert = function ($$$1) {
     var EVENT_KEY = "." + DATA_KEY;
     var DATA_API_KEY = '.data-api';
     var JQUERY_NO_CONFLICT = $$$1.fn[NAME];
-  var TRANSITION_DURATION = 150;
     var Selector = {
       DISMISS: '[data-dismiss="alert"]'
     };
@@ -277,15 +297,16 @@ var Alert = function ($$$1) {
 
         $$$1(element).removeClass(ClassName.SHOW);
 
-      if (!Util.supportsTransitionEnd() || !$$$1(element).hasClass(ClassName.FADE)) {
+        if (!$$$1(element).hasClass(ClassName.FADE)) {
           this._destroyElement(element);
 
           return;
         }
 
+        var transitionDuration = Util.getTransitionDurationFromElement(element);
         $$$1(element).one(Util.TRANSITION_END, function (event) {
           return _this._destroyElement(element, event);
-      }).emulateTransitionEnd(TRANSITION_DURATION);
+        }).emulateTransitionEnd(transitionDuration);
       };
 
       _proto._destroyElement = function _destroyElement(element) {
@@ -325,6 +346,7 @@ var Alert = function ($$$1) {
           return VERSION;
         }
       }]);
+
       return Alert;
     }();
     /**
@@ -350,16 +372,16 @@ var Alert = function ($$$1) {
     };
 
     return Alert;
-}($);
+  }($);
 
-/**
+  /**
    * --------------------------------------------------------------------------
    * Bootstrap (v4.0.0): button.js
    * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
    * --------------------------------------------------------------------------
    */
 
-var Button = function ($$$1) {
+  var Button = function ($$$1) {
     /**
      * ------------------------------------------------------------------------
      * Constants
@@ -476,6 +498,7 @@ var Button = function ($$$1) {
           return VERSION;
         }
       }]);
+
       return Button;
     }();
     /**
@@ -513,16 +536,16 @@ var Button = function ($$$1) {
     };
 
     return Button;
-}($);
+  }($);
 
-/**
+  /**
    * --------------------------------------------------------------------------
    * Bootstrap (v4.0.0): carousel.js
    * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
    * --------------------------------------------------------------------------
    */
 
-var Carousel = function ($$$1) {
+  var Carousel = function ($$$1) {
     /**
      * ------------------------------------------------------------------------
      * Constants
@@ -540,7 +563,6 @@ var Carousel = function ($$$1) {
 
     var TOUCHEVENT_COMPAT_WAIT = 500; // Time for mouse compat events to fire after touch
 
-  var MILLISECONDS_MULTIPLIER = 1000;
     var Default = {
       interval: 5000,
       keyboard: true,
@@ -610,7 +632,6 @@ var Carousel = function ($$$1) {
         this._config = this._getConfig(config);
         this._element = $$$1(element)[0];
         this._indicatorsElement = $$$1(this._element).find(Selector.INDICATORS)[0];
-      this._transitionDuration = this._getTransitionDuration();
 
         this._addEventListeners();
       } // Getters
@@ -644,7 +665,7 @@ var Carousel = function ($$$1) {
           this._isPaused = true;
         }
 
-      if ($$$1(this._element).find(Selector.NEXT_PREV)[0] && Util.supportsTransitionEnd()) {
+        if ($$$1(this._element).find(Selector.NEXT_PREV)[0]) {
           Util.triggerTransitionEnd(this._element);
           this.cycle(true);
         }
@@ -712,25 +733,11 @@ var Carousel = function ($$$1) {
 
 
       _proto._getConfig = function _getConfig(config) {
-      config = _extends({}, Default, config);
+        config = _objectSpread({}, Default, config);
         Util.typeCheckConfig(NAME, config, DefaultType);
         return config;
       };
 
-    _proto._getTransitionDuration = function _getTransitionDuration() {
-      // Get transition-duration of first element in the carousel
-      var transitionDuration = $$$1(this._element).find(Selector.ITEM).css('transition-duration'); // Return 0 carousel item is not found
-
-      if (!transitionDuration) {
-        return 0;
-      } // If multiple durations are defined, take the first
-
-
-      transitionDuration = transitionDuration.split(',')[0]; // Multiply by 1000 if transition-duration is defined in seconds
-
-      return transitionDuration.indexOf('ms') > -1 ? parseFloat(transitionDuration) : parseFloat(transitionDuration) * MILLISECONDS_MULTIPLIER;
-    };
-
       _proto._addEventListeners = function _addEventListeners() {
         var _this2 = this;
 
@@ -897,11 +904,12 @@ var Carousel = function ($$$1) {
           to: nextElementIndex
         });
 
-      if (Util.supportsTransitionEnd() && $$$1(this._element).hasClass(ClassName.SLIDE)) {
+        if ($$$1(this._element).hasClass(ClassName.SLIDE)) {
           $$$1(nextElement).addClass(orderClassName);
           Util.reflow(nextElement);
           $$$1(activeElement).addClass(directionalClassName);
           $$$1(nextElement).addClass(directionalClassName);
+          var transitionDuration = Util.getTransitionDurationFromElement(activeElement);
           $$$1(activeElement).one(Util.TRANSITION_END, function () {
             $$$1(nextElement).removeClass(directionalClassName + " " + orderClassName).addClass(ClassName.ACTIVE);
             $$$1(activeElement).removeClass(ClassName.ACTIVE + " " + orderClassName + " " + directionalClassName);
@@ -909,7 +917,7 @@ var Carousel = function ($$$1) {
             setTimeout(function () {
               return $$$1(_this3._element).trigger(slidEvent);
             }, 0);
-        }).emulateTransitionEnd(this._transitionDuration);
+          }).emulateTransitionEnd(transitionDuration);
         } else {
           $$$1(activeElement).removeClass(ClassName.ACTIVE);
           $$$1(nextElement).addClass(ClassName.ACTIVE);
@@ -927,10 +935,10 @@ var Carousel = function ($$$1) {
         return this.each(function () {
           var data = $$$1(this).data(DATA_KEY);
 
-        var _config = _extends({}, Default, $$$1(this).data());
+          var _config = _objectSpread({}, Default, $$$1(this).data());
 
           if (typeof config === 'object') {
-          _config = _extends({}, _config, config);
+            _config = _objectSpread({}, _config, config);
           }
 
           var action = typeof config === 'string' ? config : _config.slide;
@@ -968,7 +976,8 @@ var Carousel = function ($$$1) {
           return;
         }
 
-      var config = _extends({}, $$$1(target).data(), $$$1(this).data());
+        var config = _objectSpread({}, $$$1(target).data(), $$$1(this).data());
+
         var slideIndex = this.getAttribute('data-slide-to');
 
         if (slideIndex) {
@@ -995,6 +1004,7 @@ var Carousel = function ($$$1) {
           return Default;
         }
       }]);
+
       return Carousel;
     }();
     /**
@@ -1027,16 +1037,16 @@ var Carousel = function ($$$1) {
     };
 
     return Carousel;
-}($);
+  }($);
 
-/**
+  /**
    * --------------------------------------------------------------------------
    * Bootstrap (v4.0.0): collapse.js
    * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
    * --------------------------------------------------------------------------
    */
 
-var Collapse = function ($$$1) {
+  var Collapse = function ($$$1) {
     /**
      * ------------------------------------------------------------------------
      * Constants
@@ -1048,7 +1058,6 @@ var Collapse = function ($$$1) {
     var EVENT_KEY = "." + DATA_KEY;
     var DATA_API_KEY = '.data-api';
     var JQUERY_NO_CONFLICT = $$$1.fn[NAME];
-  var TRANSITION_DURATION = 600;
     var Default = {
       toggle: true,
       parent: ''
@@ -1190,14 +1199,10 @@ var Collapse = function ($$$1) {
           $$$1(_this._element).trigger(Event.SHOWN);
         };
 
-      if (!Util.supportsTransitionEnd()) {
-        complete();
-        return;
-      }
-
         var capitalizedDimension = dimension[0].toUpperCase() + dimension.slice(1);
         var scrollSize = "scroll" + capitalizedDimension;
-      $$$1(this._element).one(Util.TRANSITION_END, complete).emulateTransitionEnd(TRANSITION_DURATION);
+        var transitionDuration = Util.getTransitionDurationFromElement(this._element);
+        $$$1(this._element).one(Util.TRANSITION_END, complete).emulateTransitionEnd(transitionDuration);
         this._element.style[dimension] = this._element[scrollSize] + "px";
       };
 
@@ -1245,13 +1250,8 @@ var Collapse = function ($$$1) {
         };
 
         this._element.style[dimension] = '';
-
+        var transitionDuration = Util.getTransitionDurationFromElement(this._element);
-      if (!Util.supportsTransitionEnd()) {
+        $$$1(this._element).one(Util.TRANSITION_END, complete).emulateTransitionEnd(transitionDuration);
-        complete();
-        return;
-      }
-
-      $$$1(this._element).one(Util.TRANSITION_END, complete).emulateTransitionEnd(TRANSITION_DURATION);
       };
 
       _proto.setTransitioning = function setTransitioning(isTransitioning) {
@@ -1269,7 +1269,7 @@ var Collapse = function ($$$1) {
 
 
       _proto._getConfig = function _getConfig(config) {
-      config = _extends({}, Default, config);
+        config = _objectSpread({}, Default, config);
         config.toggle = Boolean(config.toggle); // Coerce string values
 
         Util.typeCheckConfig(NAME, config, DefaultType);
@@ -1324,7 +1324,7 @@ var Collapse = function ($$$1) {
           var $this = $$$1(this);
           var data = $this.data(DATA_KEY);
 
-        var _config = _extends({}, Default, $this.data(), typeof config === 'object' && config);
+          var _config = _objectSpread({}, Default, $this.data(), typeof config === 'object' && config);
 
           if (!data && _config.toggle && /show|hide/.test(config)) {
             _config.toggle = false;
@@ -1356,6 +1356,7 @@ var Collapse = function ($$$1) {
           return Default;
         }
       }]);
+
       return Collapse;
     }();
     /**
@@ -1396,16 +1397,16 @@ var Collapse = function ($$$1) {
     };
 
     return Collapse;
-}($);
+  }($);
 
-/**
+  /**
    * --------------------------------------------------------------------------
    * Bootstrap (v4.0.0): dropdown.js
    * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
    * --------------------------------------------------------------------------
    */
 
-var Dropdown = function ($$$1) {
+  var Dropdown = function ($$$1) {
     /**
      * ------------------------------------------------------------------------
      * Constants
@@ -1455,7 +1456,7 @@ var Dropdown = function ($$$1) {
       FORM_CHILD: '.dropdown form',
       MENU: '.dropdown-menu',
       NAVBAR_NAV: '.navbar-nav',
-    VISIBLE_ITEMS: '.dropdown-menu .dropdown-item:not(.disabled)'
+      VISIBLE_ITEMS: '.dropdown-menu .dropdown-item:not(.disabled):not(:disabled)'
     };
     var AttachmentMap = {
       TOP: 'top-start',
@@ -1612,7 +1613,7 @@ var Dropdown = function ($$$1) {
       };
 
       _proto._getConfig = function _getConfig(config) {
-      config = _extends({}, this.constructor.Default, $$$1(this._element).data(), config);
+        config = _objectSpread({}, this.constructor.Default, $$$1(this._element).data(), config);
         Util.typeCheckConfig(NAME, config, this.constructor.DefaultType);
         return config;
       };
@@ -1659,7 +1660,7 @@ var Dropdown = function ($$$1) {
 
         if (typeof this._config.offset === 'function') {
           offsetConf.fn = function (data) {
-          data.offsets = _extends({}, data.offsets, _this2._config.offset(data.offsets) || {});
+            data.offsets = _objectSpread({}, data.offsets, _this2._config.offset(data.offsets) || {});
             return data;
           };
         } else {
@@ -1845,6 +1846,7 @@ var Dropdown = function ($$$1) {
           return DefaultType;
         }
       }]);
+
       return Dropdown;
     }();
     /**
@@ -1877,16 +1879,16 @@ var Dropdown = function ($$$1) {
     };
 
     return Dropdown;
-}($, Popper);
+  }($, Popper);
 
-/**
+  /**
    * --------------------------------------------------------------------------
    * Bootstrap (v4.0.0): modal.js
    * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
    * --------------------------------------------------------------------------
    */
 
-var Modal = function ($$$1) {
+  var Modal = function ($$$1) {
     /**
      * ------------------------------------------------------------------------
      * Constants
@@ -1898,8 +1900,6 @@ var Modal = function ($$$1) {
     var EVENT_KEY = "." + DATA_KEY;
     var DATA_API_KEY = '.data-api';
     var JQUERY_NO_CONFLICT = $$$1.fn[NAME];
-  var TRANSITION_DURATION = 300;
-  var BACKDROP_TRANSITION_DURATION = 150;
     var ESCAPE_KEYCODE = 27; // KeyboardEvent.which value for Escape (Esc) key
 
     var Default = {
@@ -1978,7 +1978,7 @@ var Modal = function ($$$1) {
           return;
         }
 
-      if (Util.supportsTransitionEnd() && $$$1(this._element).hasClass(ClassName.FADE)) {
+        if ($$$1(this._element).hasClass(ClassName.FADE)) {
           this._isTransitioning = true;
         }
 
@@ -2040,7 +2040,7 @@ var Modal = function ($$$1) {
         }
 
         this._isShown = false;
-      var transition = Util.supportsTransitionEnd() && $$$1(this._element).hasClass(ClassName.FADE);
+        var transition = $$$1(this._element).hasClass(ClassName.FADE);
 
         if (transition) {
           this._isTransitioning = true;
@@ -2056,9 +2056,10 @@ var Modal = function ($$$1) {
         $$$1(this._dialog).off(Event.MOUSEDOWN_DISMISS);
 
         if (transition) {
+          var transitionDuration = Util.getTransitionDurationFromElement(this._element);
           $$$1(this._element).one(Util.TRANSITION_END, function (event) {
             return _this2._hideModal(event);
-        }).emulateTransitionEnd(TRANSITION_DURATION);
+          }).emulateTransitionEnd(transitionDuration);
         } else {
           this._hideModal();
         }
@@ -2083,7 +2084,7 @@ var Modal = function ($$$1) {
 
 
       _proto._getConfig = function _getConfig(config) {
-      config = _extends({}, Default, config);
+        config = _objectSpread({}, Default, config);
         Util.typeCheckConfig(NAME, config, DefaultType);
         return config;
       };
@@ -2091,7 +2092,7 @@ var Modal = function ($$$1) {
       _proto._showElement = function _showElement(relatedTarget) {
         var _this3 = this;
 
-      var transition = Util.supportsTransitionEnd() && $$$1(this._element).hasClass(ClassName.FADE);
+        var transition = $$$1(this._element).hasClass(ClassName.FADE);
 
         if (!this._element.parentNode || this._element.parentNode.nodeType !== Node.ELEMENT_NODE) {
           // Don't move modal's DOM position
@@ -2128,7 +2129,8 @@ var Modal = function ($$$1) {
         };
 
         if (transition) {
-        $$$1(this._dialog).one(Util.TRANSITION_END, transitionComplete).emulateTransitionEnd(TRANSITION_DURATION);
+          var transitionDuration = Util.getTransitionDurationFromElement(this._element);
+          $$$1(this._dialog).one(Util.TRANSITION_END, transitionComplete).emulateTransitionEnd(transitionDuration);
         } else {
           transitionComplete();
         }
@@ -2206,7 +2208,6 @@ var Modal = function ($$$1) {
         var animate = $$$1(this._element).hasClass(ClassName.FADE) ? ClassName.FADE : '';
 
         if (this._isShown && this._config.backdrop) {
-        var doAnimate = Util.supportsTransitionEnd() && animate;
           this._backdrop = document.createElement('div');
           this._backdrop.className = ClassName.BACKDROP;
 
@@ -2232,7 +2233,7 @@ var Modal = function ($$$1) {
             }
           });
 
-        if (doAnimate) {
+          if (animate) {
             Util.reflow(this._backdrop);
           }
 
@@ -2242,12 +2243,13 @@ var Modal = function ($$$1) {
             return;
           }
 
-        if (!doAnimate) {
+          if (!animate) {
             callback();
             return;
           }
 
-        $$$1(this._backdrop).one(Util.TRANSITION_END, callback).emulateTransitionEnd(BACKDROP_TRANSITION_DURATION);
+          var backdropTransitionDuration = Util.getTransitionDurationFromElement(this._backdrop);
+          $$$1(this._backdrop).one(Util.TRANSITION_END, callback).emulateTransitionEnd(backdropTransitionDuration);
         } else if (!this._isShown && this._backdrop) {
           $$$1(this._backdrop).removeClass(ClassName.SHOW);
 
@@ -2259,8 +2261,10 @@ var Modal = function ($$$1) {
             }
           };
 
-        if (Util.supportsTransitionEnd() && $$$1(this._element).hasClass(ClassName.FADE)) {
+          if ($$$1(this._element).hasClass(ClassName.FADE)) {
-          $$$1(this._backdrop).one(Util.TRANSITION_END, callbackRemove).emulateTransitionEnd(BACKDROP_TRANSITION_DURATION);
+            var _backdropTransitionDuration = Util.getTransitionDurationFromElement(this._backdrop);
+
+            $$$1(this._backdrop).one(Util.TRANSITION_END, callbackRemove).emulateTransitionEnd(_backdropTransitionDuration);
           } else {
             callbackRemove();
           }
@@ -2367,7 +2371,7 @@ var Modal = function ($$$1) {
         return this.each(function () {
           var data = $$$1(this).data(DATA_KEY);
 
-        var _config = _extends({}, Modal.Default, $$$1(this).data(), typeof config === 'object' && config);
+          var _config = _objectSpread({}, Modal.Default, $$$1(this).data(), typeof config === 'object' && config);
 
           if (!data) {
             data = new Modal(this, _config);
@@ -2397,6 +2401,7 @@ var Modal = function ($$$1) {
           return Default;
         }
       }]);
+
       return Modal;
     }();
     /**
@@ -2416,7 +2421,7 @@ var Modal = function ($$$1) {
         target = $$$1(selector)[0];
       }
 
-    var config = $$$1(target).data(DATA_KEY) ? 'toggle' : _extends({}, $$$1(target).data(), $$$1(this).data());
+      var config = $$$1(target).data(DATA_KEY) ? 'toggle' : _objectSpread({}, $$$1(target).data(), $$$1(this).data());
 
       if (this.tagName === 'A' || this.tagName === 'AREA') {
         event.preventDefault();
@@ -2452,16 +2457,16 @@ var Modal = function ($$$1) {
     };
 
     return Modal;
-}($);
+  }($);
 
-/**
+  /**
    * --------------------------------------------------------------------------
    * Bootstrap (v4.0.0): tooltip.js
    * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
    * --------------------------------------------------------------------------
    */
 
-var Tooltip = function ($$$1) {
+  var Tooltip = function ($$$1) {
     /**
      * ------------------------------------------------------------------------
      * Constants
@@ -2472,7 +2477,6 @@ var Tooltip = function ($$$1) {
     var DATA_KEY = 'bs.tooltip';
     var EVENT_KEY = "." + DATA_KEY;
     var JQUERY_NO_CONFLICT = $$$1.fn[NAME];
-  var TRANSITION_DURATION = 150;
     var CLASS_PREFIX = 'bs-tooltip';
     var BSCLS_PREFIX_REGEX = new RegExp("(^|\\s)" + CLASS_PREFIX + "\\S+", 'g');
     var DefaultType = {
@@ -2735,8 +2739,9 @@ var Tooltip = function ($$$1) {
             }
           };
 
-        if (Util.supportsTransitionEnd() && $$$1(this.tip).hasClass(ClassName.FADE)) {
+          if ($$$1(this.tip).hasClass(ClassName.FADE)) {
-          $$$1(this.tip).one(Util.TRANSITION_END, complete).emulateTransitionEnd(Tooltip._TRANSITION_DURATION);
+            var transitionDuration = Util.getTransitionDurationFromElement(this.tip);
+            $$$1(this.tip).one(Util.TRANSITION_END, complete).emulateTransitionEnd(transitionDuration);
           } else {
             complete();
           }
@@ -2786,8 +2791,9 @@ var Tooltip = function ($$$1) {
         this._activeTrigger[Trigger.FOCUS] = false;
         this._activeTrigger[Trigger.HOVER] = false;
 
-      if (Util.supportsTransitionEnd() && $$$1(this.tip).hasClass(ClassName.FADE)) {
+        if ($$$1(this.tip).hasClass(ClassName.FADE)) {
-        $$$1(tip).one(Util.TRANSITION_END, complete).emulateTransitionEnd(TRANSITION_DURATION);
+          var transitionDuration = Util.getTransitionDurationFromElement(tip);
+          $$$1(tip).one(Util.TRANSITION_END, complete).emulateTransitionEnd(transitionDuration);
         } else {
           complete();
         }
@@ -2878,7 +2884,7 @@ var Tooltip = function ($$$1) {
         });
 
         if (this.config.selector) {
-        this.config = _extends({}, this.config, {
+          this.config = _objectSpread({}, this.config, {
             trigger: 'manual',
             selector: ''
           });
@@ -2972,7 +2978,7 @@ var Tooltip = function ($$$1) {
       };
 
       _proto._getConfig = function _getConfig(config) {
-      config = _extends({}, this.constructor.Default, $$$1(this.element).data(), config);
+        config = _objectSpread({}, this.constructor.Default, $$$1(this.element).data(), config);
 
         if (typeof config.delay === 'number') {
           config.delay = {
@@ -3099,6 +3105,7 @@ var Tooltip = function ($$$1) {
           return DefaultType;
         }
       }]);
+
       return Tooltip;
     }();
     /**
@@ -3117,16 +3124,16 @@ var Tooltip = function ($$$1) {
     };
 
     return Tooltip;
-}($, Popper);
+  }($, Popper);
 
-/**
+  /**
    * --------------------------------------------------------------------------
    * Bootstrap (v4.0.0): popover.js
    * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
    * --------------------------------------------------------------------------
    */
 
-var Popover = function ($$$1) {
+  var Popover = function ($$$1) {
     /**
      * ------------------------------------------------------------------------
      * Constants
@@ -3139,15 +3146,18 @@ var Popover = function ($$$1) {
     var JQUERY_NO_CONFLICT = $$$1.fn[NAME];
     var CLASS_PREFIX = 'bs-popover';
     var BSCLS_PREFIX_REGEX = new RegExp("(^|\\s)" + CLASS_PREFIX + "\\S+", 'g');
-  var Default = _extends({}, Tooltip.Default, {
+
+    var Default = _objectSpread({}, 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>'
     });
-  var DefaultType = _extends({}, Tooltip.DefaultType, {
+
+    var DefaultType = _objectSpread({}, Tooltip.DefaultType, {
       content: '(string|element|function)'
     });
+
     var ClassName = {
       FADE: 'fade',
       SHOW: 'show'
@@ -3292,6 +3302,7 @@ var Popover = function ($$$1) {
           return DefaultType;
         }
       }]);
+
       return Popover;
     }(Tooltip);
     /**
@@ -3310,16 +3321,16 @@ var Popover = function ($$$1) {
     };
 
     return Popover;
-}($);
+  }($);
 
-/**
+  /**
    * --------------------------------------------------------------------------
    * Bootstrap (v4.0.0): scrollspy.js
    * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
    * --------------------------------------------------------------------------
    */
 
-var ScrollSpy = function ($$$1) {
+  var ScrollSpy = function ($$$1) {
     /**
      * ------------------------------------------------------------------------
      * Constants
@@ -3453,7 +3464,7 @@ var ScrollSpy = function ($$$1) {
 
 
       _proto._getConfig = function _getConfig(config) {
-      config = _extends({}, Default, config);
+        config = _objectSpread({}, Default, config);
 
         if (typeof config.target !== 'string') {
           var id = $$$1(config.target).attr('id');
@@ -3588,6 +3599,7 @@ var ScrollSpy = function ($$$1) {
           return Default;
         }
       }]);
+
       return ScrollSpy;
     }();
     /**
@@ -3621,16 +3633,16 @@ var ScrollSpy = function ($$$1) {
     };
 
     return ScrollSpy;
-}($);
+  }($);
 
-/**
+  /**
    * --------------------------------------------------------------------------
    * Bootstrap (v4.0.0): tab.js
    * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
    * --------------------------------------------------------------------------
    */
 
-var Tab = function ($$$1) {
+  var Tab = function ($$$1) {
     /**
      * ------------------------------------------------------------------------
      * Constants
@@ -3642,7 +3654,6 @@ var Tab = function ($$$1) {
     var EVENT_KEY = "." + DATA_KEY;
     var DATA_API_KEY = '.data-api';
     var JQUERY_NO_CONFLICT = $$$1.fn[NAME];
-  var TRANSITION_DURATION = 150;
     var Event = {
       HIDE: "hide" + EVENT_KEY,
       HIDDEN: "hidden" + EVENT_KEY,
@@ -3761,14 +3772,15 @@ var Tab = function ($$$1) {
         }
 
         var active = activeElements[0];
-      var isTransitioning = callback && Util.supportsTransitionEnd() && active && $$$1(active).hasClass(ClassName.FADE);
+        var isTransitioning = callback && active && $$$1(active).hasClass(ClassName.FADE);
 
         var complete = function complete() {
           return _this2._transitionComplete(element, active, callback);
         };
 
         if (active && isTransitioning) {
-        $$$1(active).one(Util.TRANSITION_END, complete).emulateTransitionEnd(TRANSITION_DURATION);
+          var transitionDuration = Util.getTransitionDurationFromElement(active);
+          $$$1(active).one(Util.TRANSITION_END, complete).emulateTransitionEnd(transitionDuration);
         } else {
           complete();
         }
@@ -3839,6 +3851,7 @@ var Tab = function ($$$1) {
           return VERSION;
         }
       }]);
+
       return Tab;
     }();
     /**
@@ -3868,16 +3881,16 @@ var Tab = function ($$$1) {
     };
 
     return Tab;
-}($);
+  }($);
 
-/**
+  /**
    * --------------------------------------------------------------------------
    * Bootstrap (v4.0.0): index.js
    * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
    * --------------------------------------------------------------------------
    */
 
-(function ($$$1) {
+  (function ($$$1) {
     if (typeof $$$1 === 'undefined') {
       throw new TypeError('Bootstrap\'s JavaScript requires jQuery. jQuery must be included before Bootstrap\'s JavaScript.');
     }
@@ -3892,21 +3905,21 @@ var Tab = function ($$$1) {
     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');
     }
-})($);
+  })($);
 
-exports.Util = Util;
+  exports.Util = Util;
-exports.Alert = Alert;
+  exports.Alert = Alert;
-exports.Button = Button;
+  exports.Button = Button;
-exports.Carousel = Carousel;
+  exports.Carousel = Carousel;
-exports.Collapse = Collapse;
+  exports.Collapse = Collapse;
-exports.Dropdown = Dropdown;
+  exports.Dropdown = Dropdown;
-exports.Modal = Modal;
+  exports.Modal = Modal;
-exports.Popover = Popover;
+  exports.Popover = Popover;
-exports.Scrollspy = ScrollSpy;
+  exports.Scrollspy = ScrollSpy;
-exports.Tab = Tab;
+  exports.Tab = Tab;
-exports.Tooltip = Tooltip;
+  exports.Tooltip = Tooltip;
 
-Object.defineProperty(exports, '__esModule', { value: true });
+  Object.defineProperty(exports, '__esModule', { value: true });
 
 })));
 //# sourceMappingURL=bootstrap.js.map

docs/4.0/examples/blog/blog.css

@@ -35,7 +35,6 @@ h1, h2, h3, h4, h5, h6 {
 }
 
 .nav-scroller .nav {
-  display: -webkit-box;
   display: -ms-flexbox;
   display: flex;
   -ms-flex-wrap: nowrap;
@@ -61,7 +60,6 @@ h1, h2, h3, h4, h5, h6 {
 
 .flex-auto {
   -ms-flex: 0 0 auto;
-  -webkit-box-flex: 0;
   flex: 0 0 auto;
 }
 

docs/4.0/examples/cover/cover.css

@@ -32,7 +32,6 @@ body {
 
 body {
   display: -ms-flexbox;
-  display: -webkit-box;
   display: flex;
   color: #fff;
   text-shadow: 0 .05rem .1rem rgba(0, 0, 0, .5);

docs/4.0/examples/floating-labels/floating-labels.css

@@ -10,10 +10,8 @@ body {
 
 body {
   display: -ms-flexbox;
-  display: -webkit-box;
   display: flex;
   -ms-flex-align: center;
-  -webkit-box-align: center;
   align-items: center;
   padding-top: 40px;
   padding-bottom: 40px;

docs/4.0/examples/offcanvas/offcanvas.css

@@ -39,7 +39,6 @@ body {
 }
 
 .nav-scroller .nav {
-  display: -webkit-box;
   display: -ms-flexbox;
   display: flex;
   -ms-flex-wrap: nowrap;

docs/4.0/examples/product/product.css

@@ -67,13 +67,11 @@
 
 .flex-equal > * {
   -ms-flex: 1;
-  -webkit-box-flex: 1;
   flex: 1;
 }
 @media (min-width: 768px) {
   .flex-md-equal > * {
     -ms-flex: 1;
-    -webkit-box-flex: 1;
     flex: 1;
   }
 }

docs/4.0/examples/sign-in/signin.css

@@ -5,10 +5,8 @@ body {
 
 body {
   display: -ms-flexbox;
-  display: -webkit-box;
   display: flex;
   -ms-flex-align: center;
-  -webkit-box-align: center;
   align-items: center;
   padding-top: 40px;
   padding-bottom: 40px;

js/dist/alert.js

@@ -20,7 +20,6 @@ var Alert = function ($) {
   var EVENT_KEY = "." + DATA_KEY;
   var DATA_API_KEY = '.data-api';
   var JQUERY_NO_CONFLICT = $.fn[NAME];
-  var TRANSITION_DURATION = 150;
   var Selector = {
     DISMISS: '[data-dismiss="alert"]'
   };
@@ -98,15 +97,16 @@ var Alert = function ($) {
 
       $(element).removeClass(ClassName.SHOW);
 
-      if (!Util.supportsTransitionEnd() || !$(element).hasClass(ClassName.FADE)) {
+      if (!$(element).hasClass(ClassName.FADE)) {
         this._destroyElement(element);
 
         return;
       }
 
+      var transitionDuration = Util.getTransitionDurationFromElement(element);
       $(element).one(Util.TRANSITION_END, function (event) {
         return _this._destroyElement(element, event);
-      }).emulateTransitionEnd(TRANSITION_DURATION);
+      }).emulateTransitionEnd(transitionDuration);
     };
 
     _proto._destroyElement = function _destroyElement(element) {

js/dist/carousel.js

@@ -1,4 +1,6 @@
-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 _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; var ownKeys = Object.keys(source); if (typeof Object.getOwnPropertySymbols === 'function') { ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) { return Object.getOwnPropertyDescriptor(source, sym).enumerable; })); } ownKeys.forEach(function (key) { _defineProperty(target, key, 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); } }
 
@@ -28,7 +30,6 @@ var Carousel = function ($) {
 
   var TOUCHEVENT_COMPAT_WAIT = 500; // Time for mouse compat events to fire after touch
 
-  var MILLISECONDS_MULTIPLIER = 1000;
   var Default = {
     interval: 5000,
     keyboard: true,
@@ -98,7 +99,6 @@ var Carousel = function ($) {
       this._config = this._getConfig(config);
       this._element = $(element)[0];
       this._indicatorsElement = $(this._element).find(Selector.INDICATORS)[0];
-      this._transitionDuration = this._getTransitionDuration();
 
       this._addEventListeners();
     } // Getters
@@ -132,7 +132,7 @@ var Carousel = function ($) {
         this._isPaused = true;
       }
 
-      if ($(this._element).find(Selector.NEXT_PREV)[0] && Util.supportsTransitionEnd()) {
+      if ($(this._element).find(Selector.NEXT_PREV)[0]) {
         Util.triggerTransitionEnd(this._element);
         this.cycle(true);
       }
@@ -200,25 +200,11 @@ var Carousel = function ($) {
 
 
     _proto._getConfig = function _getConfig(config) {
-      config = _extends({}, Default, config);
+      config = _objectSpread({}, Default, config);
       Util.typeCheckConfig(NAME, config, DefaultType);
       return config;
     };
 
-    _proto._getTransitionDuration = function _getTransitionDuration() {
-      // Get transition-duration of first element in the carousel
-      var transitionDuration = $(this._element).find(Selector.ITEM).css('transition-duration'); // Return 0 carousel item is not found
-
-      if (!transitionDuration) {
-        return 0;
-      } // If multiple durations are defined, take the first
-
-
-      transitionDuration = transitionDuration.split(',')[0]; // Multiply by 1000 if transition-duration is defined in seconds
-
-      return transitionDuration.indexOf('ms') > -1 ? parseFloat(transitionDuration) : parseFloat(transitionDuration) * MILLISECONDS_MULTIPLIER;
-    };
-
     _proto._addEventListeners = function _addEventListeners() {
       var _this2 = this;
 
@@ -385,11 +371,12 @@ var Carousel = function ($) {
         to: nextElementIndex
       });
 
-      if (Util.supportsTransitionEnd() && $(this._element).hasClass(ClassName.SLIDE)) {
+      if ($(this._element).hasClass(ClassName.SLIDE)) {
         $(nextElement).addClass(orderClassName);
         Util.reflow(nextElement);
         $(activeElement).addClass(directionalClassName);
         $(nextElement).addClass(directionalClassName);
+        var transitionDuration = Util.getTransitionDurationFromElement(activeElement);
         $(activeElement).one(Util.TRANSITION_END, function () {
           $(nextElement).removeClass(directionalClassName + " " + orderClassName).addClass(ClassName.ACTIVE);
           $(activeElement).removeClass(ClassName.ACTIVE + " " + orderClassName + " " + directionalClassName);
@@ -397,7 +384,7 @@ var Carousel = function ($) {
           setTimeout(function () {
             return $(_this3._element).trigger(slidEvent);
           }, 0);
-        }).emulateTransitionEnd(this._transitionDuration);
+        }).emulateTransitionEnd(transitionDuration);
       } else {
         $(activeElement).removeClass(ClassName.ACTIVE);
         $(nextElement).addClass(ClassName.ACTIVE);
@@ -415,10 +402,10 @@ var Carousel = function ($) {
       return this.each(function () {
         var data = $(this).data(DATA_KEY);
 
-        var _config = _extends({}, Default, $(this).data());
+        var _config = _objectSpread({}, Default, $(this).data());
 
         if (typeof config === 'object') {
-          _config = _extends({}, _config, config);
+          _config = _objectSpread({}, _config, config);
         }
 
         var action = typeof config === 'string' ? config : _config.slide;
@@ -456,7 +443,7 @@ var Carousel = function ($) {
         return;
       }
 
-      var config = _extends({}, $(target).data(), $(this).data());
+      var config = _objectSpread({}, $(target).data(), $(this).data());
 
       var slideIndex = this.getAttribute('data-slide-to');
 

js/dist/collapse.js

@@ -1,4 +1,6 @@
-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 _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; var ownKeys = Object.keys(source); if (typeof Object.getOwnPropertySymbols === 'function') { ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) { return Object.getOwnPropertyDescriptor(source, sym).enumerable; })); } ownKeys.forEach(function (key) { _defineProperty(target, key, 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); } }
 
@@ -22,7 +24,6 @@ var Collapse = function ($) {
   var EVENT_KEY = "." + DATA_KEY;
   var DATA_API_KEY = '.data-api';
   var JQUERY_NO_CONFLICT = $.fn[NAME];
-  var TRANSITION_DURATION = 600;
   var Default = {
     toggle: true,
     parent: ''
@@ -164,14 +165,10 @@ var Collapse = function ($) {
         $(_this._element).trigger(Event.SHOWN);
       };
 
-      if (!Util.supportsTransitionEnd()) {
-        complete();
-        return;
-      }
-
       var capitalizedDimension = dimension[0].toUpperCase() + dimension.slice(1);
       var scrollSize = "scroll" + capitalizedDimension;
-      $(this._element).one(Util.TRANSITION_END, complete).emulateTransitionEnd(TRANSITION_DURATION);
+      var transitionDuration = Util.getTransitionDurationFromElement(this._element);
+      $(this._element).one(Util.TRANSITION_END, complete).emulateTransitionEnd(transitionDuration);
       this._element.style[dimension] = this._element[scrollSize] + "px";
     };
 
@@ -219,13 +216,8 @@ var Collapse = function ($) {
       };
 
       this._element.style[dimension] = '';
-
+      var transitionDuration = Util.getTransitionDurationFromElement(this._element);
-      if (!Util.supportsTransitionEnd()) {
+      $(this._element).one(Util.TRANSITION_END, complete).emulateTransitionEnd(transitionDuration);
-        complete();
-        return;
-      }
-
-      $(this._element).one(Util.TRANSITION_END, complete).emulateTransitionEnd(TRANSITION_DURATION);
     };
 
     _proto.setTransitioning = function setTransitioning(isTransitioning) {
@@ -243,7 +235,7 @@ var Collapse = function ($) {
 
 
     _proto._getConfig = function _getConfig(config) {
-      config = _extends({}, Default, config);
+      config = _objectSpread({}, Default, config);
       config.toggle = Boolean(config.toggle); // Coerce string values
 
       Util.typeCheckConfig(NAME, config, DefaultType);
@@ -298,7 +290,7 @@ var Collapse = function ($) {
         var $this = $(this);
         var data = $this.data(DATA_KEY);
 
-        var _config = _extends({}, Default, $this.data(), typeof config === 'object' && config);
+        var _config = _objectSpread({}, Default, $this.data(), typeof config === 'object' && config);
 
         if (!data && _config.toggle && /show|hide/.test(config)) {
           _config.toggle = false;

js/dist/dropdown.js

@@ -1,4 +1,6 @@
-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 _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; var ownKeys = Object.keys(source); if (typeof Object.getOwnPropertySymbols === 'function') { ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) { return Object.getOwnPropertyDescriptor(source, sym).enumerable; })); } ownKeys.forEach(function (key) { _defineProperty(target, key, 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); } }
 
@@ -60,7 +62,7 @@ var Dropdown = function ($) {
     FORM_CHILD: '.dropdown form',
     MENU: '.dropdown-menu',
     NAVBAR_NAV: '.navbar-nav',
-    VISIBLE_ITEMS: '.dropdown-menu .dropdown-item:not(.disabled)'
+    VISIBLE_ITEMS: '.dropdown-menu .dropdown-item:not(.disabled):not(:disabled)'
   };
   var AttachmentMap = {
     TOP: 'top-start',
@@ -217,7 +219,7 @@ var Dropdown = function ($) {
     };
 
     _proto._getConfig = function _getConfig(config) {
-      config = _extends({}, this.constructor.Default, $(this._element).data(), config);
+      config = _objectSpread({}, this.constructor.Default, $(this._element).data(), config);
       Util.typeCheckConfig(NAME, config, this.constructor.DefaultType);
       return config;
     };
@@ -264,7 +266,7 @@ var Dropdown = function ($) {
 
       if (typeof this._config.offset === 'function') {
         offsetConf.fn = function (data) {
-          data.offsets = _extends({}, data.offsets, _this2._config.offset(data.offsets) || {});
+          data.offsets = _objectSpread({}, data.offsets, _this2._config.offset(data.offsets) || {});
           return data;
         };
       } else {

js/dist/index.js.map

@@ -1 +1 @@
-{"version":3,"sources":["../src/index.js"],"names":["$","TypeError","version","fn","jquery","split","minMajor","ltMajor","minMinor","minPatch","maxMajor","Error"],"mappings":"AAaA;;;;;;AAOA,CAAC,UAACA,CAAD,EAAO;AACN,MAAI,OAAOA,CAAP,KAAa,WAAjB,EAA8B;AAC5B,UAAM,IAAIC,SAAJ,CAAc,kGAAd,CAAN;AACD;;AAED,MAAMC,UAAUF,EAAEG,EAAF,CAAKC,MAAL,CAAYC,KAAZ,CAAkB,GAAlB,EAAuB,CAAvB,EAA0BA,KAA1B,CAAgC,GAAhC,CAAhB;AACA,MAAMC,WAAW,CAAjB;AACA,MAAMC,UAAU,CAAhB;AACA,MAAMC,WAAW,CAAjB;AACA,MAAMC,WAAW,CAAjB;AACA,MAAMC,WAAW,CAAjB;;AAEA,MAAIR,QAAQ,CAAR,IAAaK,OAAb,IAAwBL,QAAQ,CAAR,IAAaM,QAArC,IAAiDN,QAAQ,CAAR,MAAeI,QAAf,IAA2BJ,QAAQ,CAAR,MAAeM,QAA1C,IAAsDN,QAAQ,CAAR,IAAaO,QAApH,IAAgIP,QAAQ,CAAR,KAAcQ,QAAlJ,EAA4J;AAC1J,UAAM,IAAIC,KAAJ,CAAU,8EAAV,CAAN;AACD;AACF,CAfD,EAeGX,CAfH","file":"index.js","sourcesContent":["import $ from 'jquery'\nimport Alert from './alert'\nimport Button from './button'\nimport Carousel from './carousel'\nimport Collapse from './collapse'\nimport Dropdown from './dropdown'\nimport Modal from './modal'\nimport Popover from './popover'\nimport Scrollspy from './scrollspy'\nimport Tab from './tab'\nimport Tooltip from './tooltip'\nimport Util from './util'\n\n/**\n * --------------------------------------------------------------------------\n * Bootstrap (v4.0.0): index.js\n * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)\n * --------------------------------------------------------------------------\n */\n\n(($) => {\n  if (typeof $ === 'undefined') {\n    throw new TypeError('Bootstrap\\'s JavaScript requires jQuery. jQuery must be included before Bootstrap\\'s JavaScript.')\n  }\n\n  const version = $.fn.jquery.split(' ')[0].split('.')\n  const minMajor = 1\n  const ltMajor = 2\n  const minMinor = 9\n  const minPatch = 1\n  const maxMajor = 4\n\n  if (version[0] < ltMajor && version[1] < minMinor || version[0] === minMajor && version[1] === minMinor && version[2] < minPatch || version[0] >= maxMajor) {\n    throw new Error('Bootstrap\\'s JavaScript requires at least jQuery v1.9.1 but less than v4.0.0')\n  }\n})($)\n\nexport {\n  Util,\n  Alert,\n  Button,\n  Carousel,\n  Collapse,\n  Dropdown,\n  Modal,\n  Popover,\n  Scrollspy,\n  Tab,\n  Tooltip\n}\n"]}
+{"version":3,"sources":["../src/index.js"],"names":["$","TypeError","version","fn","jquery","split","minMajor","ltMajor","minMinor","minPatch","maxMajor","Error"],"mappings":"AAaA;;;;;;AAOA,CAAC,UAACA,CAAD,EAAO;AACN,MAAI,OAAOA,CAAP,KAAa,WAAjB,EAA8B;AAC5B,UAAM,IAAIC,SAAJ,CAAc,kGAAd,CAAN;AACD;;AAED,MAAMC,UAAUF,EAAEG,EAAF,CAAKC,MAAL,CAAYC,KAAZ,CAAkB,GAAlB,EAAuB,CAAvB,EAA0BA,KAA1B,CAAgC,GAAhC,CAAhB;AACA,MAAMC,WAAW,CAAjB;AACA,MAAMC,UAAU,CAAhB;AACA,MAAMC,WAAW,CAAjB;AACA,MAAMC,WAAW,CAAjB;AACA,MAAMC,WAAW,CAAjB;;AAEA,MAAIR,QAAQ,CAAR,IAAaK,OAAb,IAAwBL,QAAQ,CAAR,IAAaM,QAArC,IAAiDN,QAAQ,CAAR,MAAeI,QAAf,IAA2BJ,QAAQ,CAAR,MAAeM,QAA1C,IAAsDN,QAAQ,CAAR,IAAaO,QAApH,IAAgIP,QAAQ,CAAR,KAAcQ,QAAlJ,EAA4J;AAC1J,UAAM,IAAIC,KAAJ,CAAU,8EAAV,CAAN;AACD;AACF,CAfD,EAeGX,CAfH","sourcesContent":["import $ from 'jquery'\nimport Alert from './alert'\nimport Button from './button'\nimport Carousel from './carousel'\nimport Collapse from './collapse'\nimport Dropdown from './dropdown'\nimport Modal from './modal'\nimport Popover from './popover'\nimport Scrollspy from './scrollspy'\nimport Tab from './tab'\nimport Tooltip from './tooltip'\nimport Util from './util'\n\n/**\n * --------------------------------------------------------------------------\n * Bootstrap (v4.0.0): index.js\n * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)\n * --------------------------------------------------------------------------\n */\n\n(($) => {\n  if (typeof $ === 'undefined') {\n    throw new TypeError('Bootstrap\\'s JavaScript requires jQuery. jQuery must be included before Bootstrap\\'s JavaScript.')\n  }\n\n  const version = $.fn.jquery.split(' ')[0].split('.')\n  const minMajor = 1\n  const ltMajor = 2\n  const minMinor = 9\n  const minPatch = 1\n  const maxMajor = 4\n\n  if (version[0] < ltMajor && version[1] < minMinor || version[0] === minMajor && version[1] === minMinor && version[2] < minPatch || version[0] >= maxMajor) {\n    throw new Error('Bootstrap\\'s JavaScript requires at least jQuery v1.9.1 but less than v4.0.0')\n  }\n})($)\n\nexport {\n  Util,\n  Alert,\n  Button,\n  Carousel,\n  Collapse,\n  Dropdown,\n  Modal,\n  Popover,\n  Scrollspy,\n  Tab,\n  Tooltip\n}\n"],"file":"index.js"}

js/dist/modal.js

@@ -1,4 +1,6 @@
-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 _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; var ownKeys = Object.keys(source); if (typeof Object.getOwnPropertySymbols === 'function') { ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) { return Object.getOwnPropertyDescriptor(source, sym).enumerable; })); } ownKeys.forEach(function (key) { _defineProperty(target, key, 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); } }
 
@@ -22,8 +24,6 @@ var Modal = function ($) {
   var EVENT_KEY = "." + DATA_KEY;
   var DATA_API_KEY = '.data-api';
   var JQUERY_NO_CONFLICT = $.fn[NAME];
-  var TRANSITION_DURATION = 300;
-  var BACKDROP_TRANSITION_DURATION = 150;
   var ESCAPE_KEYCODE = 27; // KeyboardEvent.which value for Escape (Esc) key
 
   var Default = {
@@ -102,7 +102,7 @@ var Modal = function ($) {
         return;
       }
 
-      if (Util.supportsTransitionEnd() && $(this._element).hasClass(ClassName.FADE)) {
+      if ($(this._element).hasClass(ClassName.FADE)) {
         this._isTransitioning = true;
       }
 
@@ -164,7 +164,7 @@ var Modal = function ($) {
       }
 
       this._isShown = false;
-      var transition = Util.supportsTransitionEnd() && $(this._element).hasClass(ClassName.FADE);
+      var transition = $(this._element).hasClass(ClassName.FADE);
 
       if (transition) {
         this._isTransitioning = true;
@@ -180,9 +180,10 @@ var Modal = function ($) {
       $(this._dialog).off(Event.MOUSEDOWN_DISMISS);
 
       if (transition) {
+        var transitionDuration = Util.getTransitionDurationFromElement(this._element);
         $(this._element).one(Util.TRANSITION_END, function (event) {
           return _this2._hideModal(event);
-        }).emulateTransitionEnd(TRANSITION_DURATION);
+        }).emulateTransitionEnd(transitionDuration);
       } else {
         this._hideModal();
       }
@@ -207,7 +208,7 @@ var Modal = function ($) {
 
 
     _proto._getConfig = function _getConfig(config) {
-      config = _extends({}, Default, config);
+      config = _objectSpread({}, Default, config);
       Util.typeCheckConfig(NAME, config, DefaultType);
       return config;
     };
@@ -215,7 +216,7 @@ var Modal = function ($) {
     _proto._showElement = function _showElement(relatedTarget) {
       var _this3 = this;
 
-      var transition = Util.supportsTransitionEnd() && $(this._element).hasClass(ClassName.FADE);
+      var transition = $(this._element).hasClass(ClassName.FADE);
 
       if (!this._element.parentNode || this._element.parentNode.nodeType !== Node.ELEMENT_NODE) {
         // Don't move modal's DOM position
@@ -252,7 +253,8 @@ var Modal = function ($) {
       };
 
       if (transition) {
-        $(this._dialog).one(Util.TRANSITION_END, transitionComplete).emulateTransitionEnd(TRANSITION_DURATION);
+        var transitionDuration = Util.getTransitionDurationFromElement(this._element);
+        $(this._dialog).one(Util.TRANSITION_END, transitionComplete).emulateTransitionEnd(transitionDuration);
       } else {
         transitionComplete();
       }
@@ -330,7 +332,6 @@ var Modal = function ($) {
       var animate = $(this._element).hasClass(ClassName.FADE) ? ClassName.FADE : '';
 
       if (this._isShown && this._config.backdrop) {
-        var doAnimate = Util.supportsTransitionEnd() && animate;
         this._backdrop = document.createElement('div');
         this._backdrop.className = ClassName.BACKDROP;
 
@@ -356,7 +357,7 @@ var Modal = function ($) {
           }
         });
 
-        if (doAnimate) {
+        if (animate) {
           Util.reflow(this._backdrop);
         }
 
@@ -366,12 +367,13 @@ var Modal = function ($) {
           return;
         }
 
-        if (!doAnimate) {
+        if (!animate) {
           callback();
           return;
         }
 
-        $(this._backdrop).one(Util.TRANSITION_END, callback).emulateTransitionEnd(BACKDROP_TRANSITION_DURATION);
+        var 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);
 
@@ -383,8 +385,10 @@ var Modal = function ($) {
           }
         };
 
-        if (Util.supportsTransitionEnd() && $(this._element).hasClass(ClassName.FADE)) {
+        if ($(this._element).hasClass(ClassName.FADE)) {
-          $(this._backdrop).one(Util.TRANSITION_END, callbackRemove).emulateTransitionEnd(BACKDROP_TRANSITION_DURATION);
+          var _backdropTransitionDuration = Util.getTransitionDurationFromElement(this._backdrop);
+
+          $(this._backdrop).one(Util.TRANSITION_END, callbackRemove).emulateTransitionEnd(_backdropTransitionDuration);
         } else {
           callbackRemove();
         }
@@ -491,7 +495,7 @@ var Modal = function ($) {
       return this.each(function () {
         var data = $(this).data(DATA_KEY);
 
-        var _config = _extends({}, Modal.Default, $(this).data(), typeof config === 'object' && config);
+        var _config = _objectSpread({}, Modal.Default, $(this).data(), typeof config === 'object' && config);
 
         if (!data) {
           data = new Modal(this, _config);
@@ -541,7 +545,7 @@ var Modal = function ($) {
       target = $(selector)[0];
     }
 
-    var config = $(target).data(DATA_KEY) ? 'toggle' : _extends({}, $(target).data(), $(this).data());
+    var config = $(target).data(DATA_KEY) ? 'toggle' : _objectSpread({}, $(target).data(), $(this).data());
 
     if (this.tagName === 'A' || this.tagName === 'AREA') {
       event.preventDefault();

js/dist/popover.js

@@ -4,7 +4,9 @@ function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _d
 
 function _inheritsLoose(subClass, superClass) { subClass.prototype = Object.create(superClass.prototype); subClass.prototype.constructor = subClass; subClass.__proto__ = superClass; }
 
-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 _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; var ownKeys = Object.keys(source); if (typeof Object.getOwnPropertySymbols === 'function') { ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) { return Object.getOwnPropertyDescriptor(source, sym).enumerable; })); } ownKeys.forEach(function (key) { _defineProperty(target, key, 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; }
 
 /**
  * --------------------------------------------------------------------------
@@ -26,14 +28,14 @@ var Popover = function ($) {
   var CLASS_PREFIX = 'bs-popover';
   var BSCLS_PREFIX_REGEX = new RegExp("(^|\\s)" + CLASS_PREFIX + "\\S+", 'g');
 
-  var Default = _extends({}, Tooltip.Default, {
+  var Default = _objectSpread({}, 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>'
   });
 
-  var DefaultType = _extends({}, Tooltip.DefaultType, {
+  var DefaultType = _objectSpread({}, Tooltip.DefaultType, {
     content: '(string|element|function)'
   });
 

js/dist/scrollspy.js

@@ -1,4 +1,6 @@
-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 _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; var ownKeys = Object.keys(source); if (typeof Object.getOwnPropertySymbols === 'function') { ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) { return Object.getOwnPropertyDescriptor(source, sym).enumerable; })); } ownKeys.forEach(function (key) { _defineProperty(target, key, 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); } }
 
@@ -144,7 +146,7 @@ var ScrollSpy = function ($) {
 
 
     _proto._getConfig = function _getConfig(config) {
-      config = _extends({}, Default, config);
+      config = _objectSpread({}, Default, config);
 
       if (typeof config.target !== 'string') {
         var id = $(config.target).attr('id');

js/dist/tab.js

@@ -20,7 +20,6 @@ var Tab = function ($) {
   var EVENT_KEY = "." + DATA_KEY;
   var DATA_API_KEY = '.data-api';
   var JQUERY_NO_CONFLICT = $.fn[NAME];
-  var TRANSITION_DURATION = 150;
   var Event = {
     HIDE: "hide" + EVENT_KEY,
     HIDDEN: "hidden" + EVENT_KEY,
@@ -139,14 +138,15 @@ var Tab = function ($) {
       }
 
       var active = activeElements[0];
-      var isTransitioning = callback && Util.supportsTransitionEnd() && active && $(active).hasClass(ClassName.FADE);
+      var isTransitioning = callback && active && $(active).hasClass(ClassName.FADE);
 
       var complete = function complete() {
         return _this2._transitionComplete(element, active, callback);
       };
 
       if (active && isTransitioning) {
-        $(active).one(Util.TRANSITION_END, complete).emulateTransitionEnd(TRANSITION_DURATION);
+        var transitionDuration = Util.getTransitionDurationFromElement(active);
+        $(active).one(Util.TRANSITION_END, complete).emulateTransitionEnd(transitionDuration);
       } else {
         complete();
       }

js/dist/tooltip.js

@@ -1,4 +1,6 @@
-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 _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; var ownKeys = Object.keys(source); if (typeof Object.getOwnPropertySymbols === 'function') { ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) { return Object.getOwnPropertyDescriptor(source, sym).enumerable; })); } ownKeys.forEach(function (key) { _defineProperty(target, key, 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); } }
 
@@ -21,7 +23,6 @@ var Tooltip = function ($) {
   var DATA_KEY = 'bs.tooltip';
   var EVENT_KEY = "." + DATA_KEY;
   var JQUERY_NO_CONFLICT = $.fn[NAME];
-  var TRANSITION_DURATION = 150;
   var CLASS_PREFIX = 'bs-tooltip';
   var BSCLS_PREFIX_REGEX = new RegExp("(^|\\s)" + CLASS_PREFIX + "\\S+", 'g');
   var DefaultType = {
@@ -284,8 +285,9 @@ var Tooltip = function ($) {
           }
         };
 
-        if (Util.supportsTransitionEnd() && $(this.tip).hasClass(ClassName.FADE)) {
+        if ($(this.tip).hasClass(ClassName.FADE)) {
-          $(this.tip).one(Util.TRANSITION_END, complete).emulateTransitionEnd(Tooltip._TRANSITION_DURATION);
+          var transitionDuration = Util.getTransitionDurationFromElement(this.tip);
+          $(this.tip).one(Util.TRANSITION_END, complete).emulateTransitionEnd(transitionDuration);
         } else {
           complete();
         }
@@ -335,8 +337,9 @@ var Tooltip = function ($) {
       this._activeTrigger[Trigger.FOCUS] = false;
       this._activeTrigger[Trigger.HOVER] = false;
 
-      if (Util.supportsTransitionEnd() && $(this.tip).hasClass(ClassName.FADE)) {
+      if ($(this.tip).hasClass(ClassName.FADE)) {
-        $(tip).one(Util.TRANSITION_END, complete).emulateTransitionEnd(TRANSITION_DURATION);
+        var transitionDuration = Util.getTransitionDurationFromElement(tip);
+        $(tip).one(Util.TRANSITION_END, complete).emulateTransitionEnd(transitionDuration);
       } else {
         complete();
       }
@@ -427,7 +430,7 @@ var Tooltip = function ($) {
       });
 
       if (this.config.selector) {
-        this.config = _extends({}, this.config, {
+        this.config = _objectSpread({}, this.config, {
           trigger: 'manual',
           selector: ''
         });
@@ -521,7 +524,7 @@ var Tooltip = function ($) {
     };
 
     _proto._getConfig = function _getConfig(config) {
-      config = _extends({}, this.constructor.Default, $(this.element).data(), config);
+      config = _objectSpread({}, this.constructor.Default, $(this.element).data(), config);
 
       if (typeof config.delay === 'number') {
         config.delay = {

js/dist/util.js

@@ -10,8 +10,9 @@ var Util = function ($) {
    * Private TransitionEnd Helpers
    * ------------------------------------------------------------------------
    */
-  var transition = false;
+  var TRANSITION_END = 'transitionend';
-  var MAX_UID = 1000000; // Shoutout AngusCroll (https://goo.gl/pxwQGp)
+  var MAX_UID = 1000000;
+  var MILLISECONDS_MULTIPLIER = 1000; // Shoutout AngusCroll (https://goo.gl/pxwQGp)
 
   function toType(obj) {
     return {}.toString.call(obj).match(/\s([a-z]+)/i)[1].toLowerCase();
@@ -19,8 +20,8 @@ var Util = function ($) {
 
   function getSpecialTransitionEndEvent() {
     return {
-      bindType: transition.end,
+      bindType: TRANSITION_END,
-      delegateType: transition.end,
+      delegateType: TRANSITION_END,
       handle: function handle(event) {
         if ($(event.target).is(this)) {
           return event.handleObj.handler.apply(this, arguments); // eslint-disable-line prefer-rest-params
@@ -31,16 +32,6 @@ var Util = function ($) {
     };
   }
 
-  function transitionEndTest() {
-    if (typeof window !== 'undefined' && window.QUnit) {
-      return false;
-    }
-
-    return {
-      end: 'transitionend'
-    };
-  }
-
   function transitionEndEmulator(duration) {
     var _this = this;
 
@@ -57,13 +48,9 @@ var Util = function ($) {
   }
 
   function setTransitionEndSupport() {
-    transition = transitionEndTest();
     $.fn.emulateTransitionEnd = transitionEndEmulator;
-
-    if (Util.supportsTransitionEnd()) {
     $.event.special[Util.TRANSITION_END] = getSpecialTransitionEndEvent();
   }
-  }
   /**
    * --------------------------------------------------------------------------
    * Public Util Api
@@ -95,14 +82,32 @@ var Util = function ($) {
         return null;
       }
     },
+    getTransitionDurationFromElement: function getTransitionDurationFromElement(element) {
+      if (!element) {
+        return 0;
+      } // Get transition-duration of the element
+
+
+      var transitionDuration = $(element).css('transition-duration');
+      var floatTransitionDuration = parseFloat(transitionDuration); // Return 0 if element or transition duration is not found
+
+      if (!floatTransitionDuration) {
+        return 0;
+      } // If multiple durations are defined, take the first
+
+
+      transitionDuration = transitionDuration.split(',')[0];
+      return parseFloat(transitionDuration) * MILLISECONDS_MULTIPLIER;
+    },
     reflow: function reflow(element) {
       return element.offsetHeight;
     },
     triggerTransitionEnd: function triggerTransitionEnd(element) {
-      $(element).trigger(transition.end);
+      $(element).trigger(TRANSITION_END);
     },
+    // TODO: Remove in v5
     supportsTransitionEnd: function supportsTransitionEnd() {
-      return Boolean(transition);
+      return Boolean(TRANSITION_END);
     },
     isElement: function isElement(obj) {
       return (obj[0] || obj).nodeType;

package-lock.json

@@ -701,7 +701,7 @@
     },
     "@sinonjs/formatio": {
       "version": "2.0.0",
-      "resolved": "http://registry.npmjs.org/@sinonjs/formatio/-/formatio-2.0.0.tgz",
+      "resolved": "https://registry.npmjs.org/@sinonjs/formatio/-/formatio-2.0.0.tgz",
       "integrity": "sha512-ls6CAMA6/5gG+O/IdsBcblvnd8qcO/l1TYoNeAzp3wcISOxlPXQEus0mLcdwazEkWjaBdaJ3TaxmNgCLWwvWzg==",
       "dev": true,
       "requires": {
@@ -1286,7 +1286,7 @@
     },
     "babel-eslint": {
       "version": "8.2.2",
-      "resolved": "http://registry.npmjs.org/babel-eslint/-/babel-eslint-8.2.2.tgz",
+      "resolved": "https://registry.npmjs.org/babel-eslint/-/babel-eslint-8.2.2.tgz",
       "integrity": "sha512-Qt2lz2egBxNYWqN9JIO2z4NOOf8i4b5JS6CFoYrOZZTDssueiV1jH/jsefyg+86SeNY3rB361/mi3kE1WK2WYQ==",
       "dev": true,
       "requires": {
@@ -3602,7 +3602,7 @@
     },
     "event-stream": {
       "version": "3.3.4",
-      "resolved": "http://registry.npmjs.org/event-stream/-/event-stream-3.3.4.tgz",
+      "resolved": "https://registry.npmjs.org/event-stream/-/event-stream-3.3.4.tgz",
       "integrity": "sha1-SrTJoPWlTbkzi0w02Gv86PSzVXE=",
       "dev": true,
       "requires": {