Optimise default types

Author: timursevimli

lib/throttle.js

@@ -16,7 +16,7 @@ const throttle = (timeout, fn, ...args) => {
     : (...pars) => (pars ? fn(...pars) : fn());
 
   const delayed = (...pars) => {
-    timer = undefined;
+    timer = null;
     if (wait) execute(...pars);
   };
 
@@ -38,12 +38,15 @@ const throttle = (timeout, fn, ...args) => {
 //   fn - <Function>, to be debounced
 //   args - <Array>, arguments for fn, optional
 const debounce = (timeout, fn, ...args) => {
-  let timer;
+  let timer = null
 
   const debounced = () => (args ? fn(...args) : fn());
 
   const wrapped = () => {
-    if (timer) clearTimeout(timer);
+    if (timer) {
+      clearTimeout(timer);
+      timer = null;
+    }
     timer = setTimeout(debounced, timeout);
   };