1 files changed, 5 insertions, 8 deletions
diff --git a/lib/concatLimit.js b/lib/concatLimit.js
index cec4e2b..e5c179a 100644
--- a/lib/concatLimit.js
+++ b/lib/concatLimit.js
@@ -1,10 +1,7 @@
 import noop from './internal/noop';
 import wrapAsync from './internal/wrapAsync';
-import slice from './internal/slice';
 import mapLimit from './mapLimit';
 
-var _concat = Array.prototype.concat;
-
 /**
  * The same as [`concat`]{@link module:Collections.concat} but runs a maximum of `limit` async operations at a time.
  *
@@ -26,16 +23,16 @@ var _concat = Array.prototype.concat;
 export default function(coll, limit, iteratee, callback) {
     callback = callback || noop;
     var _iteratee = wrapAsync(iteratee);
-    mapLimit(coll, limit, function(val, callback) {
-        _iteratee(val, function(err /*, ...args*/) {
+    mapLimit(coll, limit, (val, callback) => {
+        _iteratee(val, (err, ...args) => {
             if (err) return callback(err);
-            return callback(null, slice(arguments, 1));
+            return callback(null, args);
         });
-    }, function(err, mapResults) {
+    }, (err, mapResults) => {
         var result = [];
         for (var i = 0; i < mapResults.length; i++) {
             if (mapResults[i]) {
-                result = _concat.apply(result, mapResults[i]);
+                result = result.concat(...mapResults[i]);
             }
         }