Create simple debounce and throttle instead of _.

src/js/util/debounce.js

@@ -0,0 +1,17 @@
+module.exports = function(func, time, immediate) {
+    var timeout;
+    return function() {
+      var later = function() {
+        timeout = null;
+        if (!immediate) {
+          func.apply(this, arguments);
+        }
+      };
+      var callNow = immediate && !timeout;
+      clearTimeout(timeout);
+      timeout = setTimeout(later, time);
+      if (callNow) {
+        func.apply(this, arguments);
+      }
+    };
+  };

src/js/util/throttle.js

@@ -0,0 +1,13 @@
+module.exports = function(func, time) {
+    var wait = false;
+    return function() {
+      if (!wait) {
+        func.apply(this, arguments);
+        wait = true;
+        
+        setTimeout(function() {
+          wait = false;
+        }, time);
+      }
+    };
+  };