Remove arguments references where possible.

_createCtor.js

@@ -10,11 +10,10 @@ import isObject from './isObject.js';
  * @returns {Function} Returns the new wrapped function.
  */
 function createCtor(Ctor) {
-  return function() {
+  return function(...args) {
     // Use a `switch` statement to work with class constructors. See
     // http://ecma-international.org/ecma-262/7.0/#sec-ecmascript-function-objects-call-thisargument-argumentslist
     // for more details.
-    const args = arguments;
     switch (args.length) {
       case 0: return new Ctor;
       case 1: return new Ctor(args[0]);

_createCurry.js

@@ -18,16 +18,9 @@ import root from './_root.js';
 function createCurry(func, bitmask, arity) {
   const Ctor = createCtor(func);
 
-  function wrapper() {
-    let length = arguments.length;
-    let index = length;
-
-    const args = Array(length);
+  function wrapper(...args) {
+    let length = args.length;
     const placeholder = getHolder(wrapper);
-
-    while (index--) {
-      args[index] = arguments[index];
-    }
     const holders = (length < 3 && args[0] !== placeholder && args[length - 1] !== placeholder)
       ? []
       : replaceHolders(args, placeholder);

concat.js

@@ -24,18 +24,7 @@ import isArray from './isArray.js';
  * console.log(array);
  * // => [1]
  */
-function concat() {
-  const length = arguments.length;
-  if (!length) {
-    return [];
-  }
-  const args = Array(length - 1);
-  const array = arguments[0];
-  let index = length;
-
-  while (index--) {
-    args[index - 1] = arguments[index];
-  }
+function concat(array, ...values) {
   return arrayPush(isArray(array) ? copyArray(array) : [array], baseFlatten(args, 1));
 }
 

memoize.js

@@ -50,8 +50,8 @@ function memoize(func, resolver) {
   if (typeof func != 'function' || (resolver != null && typeof resolver != 'function')) {
     throw new TypeError(FUNC_ERROR_TEXT);
   }
-  const memoized = function() {
-    const args = arguments, key = resolver ? resolver.apply(this, args) : args[0];
+  const memoized = function(...args) {
+    const key = resolver ? resolver.apply(this, args) : args[0];
     const cache = memoized.cache;
 
     if (cache.has(key)) {

negate.js

@@ -24,14 +24,7 @@ function negate(predicate) {
   if (typeof predicate != 'function') {
     throw new TypeError(FUNC_ERROR_TEXT);
   }
-  return function() {
-    const args = arguments;
-    switch (args.length) {
-      case 0: return !predicate.call(this);
-      case 1: return !predicate.call(this, args[0]);
-      case 2: return !predicate.call(this, args[0], args[1]);
-      case 3: return !predicate.call(this, args[0], args[1], args[2]);
-    }
+  return function(...args) {
     return !predicate.apply(this, args);
   };
 }