Apply rest arguments transform.

_createBind.js

@@ -18,9 +18,9 @@ function createBind(func, bitmask, thisArg) {
   var isBind = bitmask & WRAP_BIND_FLAG,
       Ctor = createCtor(func);
 
-  function wrapper() {
+  function wrapper(...args) {
     var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;
-    return fn.apply(isBind ? thisArg : this, arguments);
+    return fn.apply(isBind ? thisArg : this, args);
   }
   return wrapper;
 }

_shortOut.js

@@ -18,19 +18,19 @@ function shortOut(func) {
   var count = 0,
       lastCalled = 0;
 
-  return function() {
+  return function(...args) {
     var stamp = nativeNow(),
         remaining = HOT_SPAN - (stamp - lastCalled);
 
     lastCalled = stamp;
     if (remaining > 0) {
       if (++count >= HOT_COUNT) {
-        return arguments[0];
+        return args[0];
       }
     } else {
       count = 0;
     }
-    return func(...arguments);
+    return func(...args);
   };
 }
 

after.js

@@ -32,9 +32,9 @@ function after(n, func) {
     throw new TypeError(FUNC_ERROR_TEXT);
   }
   n = toInteger(n);
-  return function() {
+  return function(...args) {
     if (--n < 1) {
-      return func.apply(this, arguments);
+      return func.apply(this, args);
     }
   };
 }

before.js

@@ -26,9 +26,9 @@ function before(n, func) {
     throw new TypeError(FUNC_ERROR_TEXT);
   }
   n = toInteger(n);
-  return function() {
+  return function(...args) {
     if (--n > 0) {
-      result = func.apply(this, arguments);
+      result = func.apply(this, args);
     }
     if (n <= 1) {
       func = undefined;

castArray.js

@@ -33,11 +33,11 @@ import isArray from './isArray.js';
  * console.log(_.castArray(array) === array);
  * // => true
  */
-function castArray() {
-  if (!arguments.length) {
+function castArray(...args) {
+  if (!args.length) {
     return [];
   }
-  var value = arguments[0];
+  var value = args[0];
   return isArray(value) ? value : [value];
 }
 

debounce.js

@@ -157,11 +157,11 @@ function debounce(func, wait, options) {
     return timerId === undefined ? result : trailingEdge(now());
   }
 
-  function debounced() {
+  function debounced(...args) {
     var time = now(),
         isInvoking = shouldInvoke(time);
 
-    lastArgs = arguments;
+    lastArgs = args;
     lastThis = this;
     lastCallTime = time;
 

isArguments.js

@@ -28,7 +28,7 @@ var propertyIsEnumerable = objectProto.propertyIsEnumerable;
  * _.isArguments([1, 2, 3]);
  * // => false
  */
-var isArguments = baseIsArguments(function() { return arguments; }()) ? baseIsArguments : value => isObjectLike(value) && hasOwnProperty.call(value, 'callee') &&
+var isArguments = baseIsArguments(function(...args) { return args; }()) ? baseIsArguments : value => isObjectLike(value) && hasOwnProperty.call(value, 'callee') &&
   !propertyIsEnumerable.call(value, 'callee');
 
 export default isArguments;