Shieeet

ionic/util/util.ts

@@ -51,6 +51,31 @@ function _baseExtend(dst, objs, deep) {
   return dst;
 }
 
+export function debounce(func, wait, immediate) {
+ var timeout, args, context, timestamp, result;
+ return function() {
+   context = this;
+   args = arguments;
+   timestamp = new Date();
+   var later = function() {
+     var last = (new Date()) - timestamp;
+     if (last < wait) {
+       timeout = setTimeout(later, wait - last);
+     } else {
+       timeout = null;
+       if (!immediate) result = func.apply(context, args);
+     }
+   };
+   var callNow = immediate && !timeout;
+   if (!timeout) {
+     timeout = setTimeout(later, wait);
+   }
+   if (callNow) result = func.apply(context, args);
+   return result;
+ };
+}
+
+
 /**
  * Apply default arguments if they don't exist in
  * the first object.