JS: minor refactoring

* shorten block comments
* reorder constants

js/src/carousel.js

@@ -9,9 +9,7 @@ import $ from 'jquery'
 import Util from './util'
 
 /**
- * ------------------------------------------------------------------------
  * Constants
- * ------------------------------------------------------------------------
  */
 
 const NAME = 'carousel'
@@ -25,23 +23,14 @@ const ARROW_RIGHT_KEYCODE = 39 // KeyboardEvent.which value for right arrow key
 const TOUCHEVENT_COMPAT_WAIT = 500 // Time for mouse compat events to fire after touch
 const SWIPE_THRESHOLD = 40
 
-const Default = {
-  interval: 5000,
-  keyboard: true,
-  slide: false,
-  pause: 'hover',
-  wrap: true,
-  touch: true
-}
-
-const DefaultType = {
-  interval: '(number|boolean)',
-  keyboard: 'boolean',
-  slide: '(boolean|string)',
-  pause: '(string|boolean)',
-  wrap: 'boolean',
-  touch: 'boolean'
-}
+const CLASS_NAME_CAROUSEL = 'carousel'
+const CLASS_NAME_ACTIVE = 'active'
+const CLASS_NAME_SLIDE = 'slide'
+const CLASS_NAME_RIGHT = 'carousel-item-right'
+const CLASS_NAME_LEFT = 'carousel-item-left'
+const CLASS_NAME_NEXT = 'carousel-item-next'
+const CLASS_NAME_PREV = 'carousel-item-prev'
+const CLASS_NAME_POINTER_EVENT = 'pointer-event'
 
 const DIRECTION_NEXT = 'next'
 const DIRECTION_PREV = 'prev'
@@ -62,15 +51,6 @@ const EVENT_DRAG_START = `dragstart${EVENT_KEY}`
 const EVENT_LOAD_DATA_API = `load${EVENT_KEY}${DATA_API_KEY}`
 const EVENT_CLICK_DATA_API = `click${EVENT_KEY}${DATA_API_KEY}`
 
-const CLASS_NAME_CAROUSEL = 'carousel'
-const CLASS_NAME_ACTIVE = 'active'
-const CLASS_NAME_SLIDE = 'slide'
-const CLASS_NAME_RIGHT = 'carousel-item-right'
-const CLASS_NAME_LEFT = 'carousel-item-left'
-const CLASS_NAME_NEXT = 'carousel-item-next'
-const CLASS_NAME_PREV = 'carousel-item-prev'
-const CLASS_NAME_POINTER_EVENT = 'pointer-event'
-
 const SELECTOR_ACTIVE = '.active'
 const SELECTOR_ACTIVE_ITEM = '.active.carousel-item'
 const SELECTOR_ITEM = '.carousel-item'
@@ -80,16 +60,33 @@ const SELECTOR_INDICATORS = '.carousel-indicators'
 const SELECTOR_DATA_SLIDE = '[data-slide], [data-slide-to]'
 const SELECTOR_DATA_RIDE = '[data-ride="carousel"]'
 
+const Default = {
+  interval: 5000,
+  keyboard: true,
+  slide: false,
+  pause: 'hover',
+  wrap: true,
+  touch: true
+}
+
+const DefaultType = {
+  interval: '(number|boolean)',
+  keyboard: 'boolean',
+  slide: '(boolean|string)',
+  pause: '(string|boolean)',
+  wrap: 'boolean',
+  touch: 'boolean'
+}
+
 const PointerType = {
   TOUCH: 'touch',
   PEN: 'pen'
 }
 
 /**
- * ------------------------------------------------------------------------
- * Class Definition
- * ------------------------------------------------------------------------
+ * Class definition
  */
+
 class Carousel {
   constructor(element, config) {
     this._items = null
@@ -111,7 +108,6 @@ class Carousel {
   }
 
   // Getters
-
   static get VERSION() {
     return VERSION
   }
@@ -121,7 +117,6 @@ class Carousel {
   }
 
   // Public
-
   next() {
     if (!this._isSliding) {
       this._slide(DIRECTION_NEXT)
@@ -220,7 +215,6 @@ class Carousel {
   }
 
   // Private
-
   _getConfig(config) {
     config = {
       ...Default,
@@ -508,7 +502,6 @@ class Carousel {
   }
 
   // Static
-
   static _jQueryInterface(config) {
     return this.each(function () {
       let data = $(this).data(DATA_KEY)
@@ -580,9 +573,7 @@ class Carousel {
 }
 
 /**
- * ------------------------------------------------------------------------
- * Data Api implementation
- * ------------------------------------------------------------------------
+ * Data API implementation
  */
 
 $(document).on(EVENT_CLICK_DATA_API, SELECTOR_DATA_SLIDE, Carousel._dataApiClickHandler)
@@ -596,9 +587,7 @@ $(window).on(EVENT_LOAD_DATA_API, () => {
 })
 
 /**
- * ------------------------------------------------------------------------
  * jQuery
- * ------------------------------------------------------------------------
  */
 
 $.fn[NAME] = Carousel._jQueryInterface