remove es6 idioms

2 files changed, 7 insertions, 6 deletions

diff --git a/lib/race.js b/lib/race.js
index 4a5f8a5..0ef6914 100644
--- a/lib/race.js
+++ b/lib/race.js
@@ -1,6 +1,7 @@
 'use strict';
 
 import isArray from 'lodash/isArray';
+import each from 'lodash/each';
 import noop from 'lodash/noop';
 import once from 'lodash/once';
 
@@ -8,7 +9,7 @@ export default function race(tasks, cb) {
     cb = once(cb || noop);
     if (!isArray(tasks)) return cb(new TypeError('First argument to race must be an array of functions'));
     if (!tasks.length) return cb();
-    for (let i = 0; i < tasks.length; i++) {
-        tasks[i](cb);
-    }
+    each(tasks, function (task) {
+        task(cb);
+    });
 }
diff --git a/lib/waterfall.js b/lib/waterfall.js
index a31b3b4..9882e11 100644
--- a/lib/waterfall.js
+++ b/lib/waterfall.js
@@ -15,12 +15,12 @@ export default  function(tasks, cb) {
 
     function nextTask(args) {
         if (taskIndex === tasks.length) {
-            return cb(null, ...args);
+            return cb.apply(null, [null].concat(args));
         }
 
         var taskCallback = onlyOnce(rest(function(err, args) {
             if (err) {
-                return cb(err, ...args);
+                return cb.apply(null, [err].concat(args));
             }
             nextTask(args);
         }));
@@ -28,7 +28,7 @@ export default  function(tasks, cb) {
         args.push(taskCallback);
 
         var task = tasks[taskIndex++];
-        task(...args);
+        task.apply(null, args);
     }
 
     nextTask([]);