add simple type checker implementation

js/dist/carousel.js

@@ -35,6 +35,14 @@ var Carousel = (function ($) {
     wrap: true
   };
 
+  var DefaultType = {
+    interval: '(number|boolean)',
+    keyboard: 'boolean',
+    slide: '(boolean|string)',
+    pause: 'string',
+    wrap: 'boolean'
+  };
+
   var Direction = {
     NEXT: 'next',
     PREVIOUS: 'prev'
@@ -86,7 +94,7 @@ var Carousel = (function ($) {
       this._isPaused = false;
       this._isSliding = false;
 
-      this._config = config;
+      this._config = this._getConfig(config);
       this._element = $(element)[0];
       this._indicatorsElement = $(this._element).find(Selector.INDICATORS)[0];
 
@@ -187,10 +195,17 @@ var Carousel = (function ($) {
         this._indicatorsElement = null;
       }
     }, {
-      key: '_addEventListeners',
+      key: '_getConfig',
 
       // private
 
+      value: function _getConfig(config) {
+        config = $.extend({}, Default, config);
+        Util.typeCheckConfig(NAME, config, DefaultType);
+        return config;
+      }
+    }, {
+      key: '_addEventListeners',
       value: function _addEventListeners() {
         if (this._config.keyboard) {
           $(this._element).on(Event.KEYDOWN, $.proxy(this._keydown, this));