From d9b860d666fd79498a45268c47bfd964c2fabefd Mon Sep 17 00:00:00 2001
From: Graeme Yeates <yeatesgraeme@gmail.com>
Date: Sat, 1 Aug 2015 17:48:49 -0400
Subject: Implement each as iterator

---
 lib/async.js       | 30 +++++++++++-------------------
 test/test-async.js | 11 ++++++-----
 2 files changed, 17 insertions(+), 24 deletions(-)

diff --git a/lib/async.js b/lib/async.js
index 208e602..b8a2b24 100644
--- a/lib/async.js
+++ b/lib/async.js
@@ -77,12 +77,6 @@
         );
     }
 
-    function _each(coll, iterator) {
-        return _isArrayLike(coll) ?
-            _arrayEach(coll, iterator) :
-            _forEachOf(coll, iterator);
-    }
-
     function _arrayEach(arr, iterator) {
         var index = -1,
             length = arr.length;
@@ -229,24 +223,22 @@
     async.forEachOf =
     async.eachOf = function (object, iterator, callback) {
         callback = _once(callback || noop);
-        object = object || [];
-        var size = _isArrayLike(object) ? object.length : _keys(object).length;
-        var completed = 0;
-        if (!size) {
-            return callback(null);
-        }
-        _each(object, function (value, key) {
+
+        var nextKey = _keyIterator(object || []);
+        var key, running = 0;
+        while ((key = nextKey()) != null) {
+            running += 1;
             iterator(object[key], key, only_once(done));
-        });
+        }
+        if (!running) {
+            callback (null);
+        }
         function done(err) {
             if (err) {
                 callback(err);
             }
-            else {
-                completed += 1;
-                if (completed >= size) {
-                    callback(null);
-                }
+            else if (--running <= 0) {
+                callback(null);
             }
         }
     };
diff --git a/test/test-async.js b/test/test-async.js
index 23aa2b9..59ff438 100755
--- a/test/test-async.js
+++ b/test/test-async.js
@@ -1353,8 +1353,7 @@ exports['forEachOf empty object'] = function(test){
         test.ok(false, 'iterator should not be called');
         callback();
     }, function(err) {
-        if (err) throw err;
-        test.ok(true, 'should call callback');
+        test.same(err, null, 'should call callback with err');
     });
     setTimeout(test.done, 25);
 };
@@ -1365,8 +1364,7 @@ exports['forEachOf empty array'] = function(test){
         test.ok(false, 'iterator should not be called');
         callback();
     }, function(err) {
-        if (err) throw err;
-        test.ok(true, 'should call callback');
+        test.same(err, null, 'should call callback with err');
     });
     setTimeout(test.done, 25);
 };
@@ -1765,6 +1763,7 @@ exports['map'] = {
     async.map(a, function(x, callback){
         callback(null, x*2);
     }, function(err, results){
+        console.log(results, [2, 4, 6]);
         test.same(results, [2,4,6]);
         test.same(a, [1,2,3]);
         test.done();
@@ -2034,6 +2033,7 @@ exports['filter'] = function(test){
 exports['filter original untouched'] = function(test){
     var a = [3,1,2];
     async.filter(a, function(x, callback){
+        console.log(x);
         callback(x % 2);
     }, function(results){
         test.same(results, [3,1]);
@@ -2071,10 +2071,11 @@ exports['reject original untouched'] = function(test){
     test.expect(2);
     var a = [3,1,2];
     async.reject(a, function(x, callback){
+        console.log(x);
         callback(x % 2);
     }, function(results){
         test.same(results, [2]);
-        test.same(a, [3,1,2]);
+        test.same(a, [3, 1, 2]);
         test.done();
     });
 };
-- 
cgit v1.2.1