From ae248812d8e87afd0a50661b6d2e82060d22f6cb Mon Sep 17 00:00:00 2001
From: Alexander Early <alexander.early@gmail.com>
Date: Tue, 5 Apr 2016 13:20:53 -0700
Subject: [PATCH] allow no callback for detect, some and family.  Fixes #1096

---
 lib/internal/createTester.js |  3 +++
 mocha_test/detect.js         | 14 ++++++++++++++
 mocha_test/some.js           | 14 ++++++++++++++
 3 files changed, 31 insertions(+)

diff --git a/lib/internal/createTester.js b/lib/internal/createTester.js
index 662f5e893..ac38bf75b 100644
--- a/lib/internal/createTester.js
+++ b/lib/internal/createTester.js
@@ -1,4 +1,5 @@
 'use strict';
+import noop from 'lodash/noop';
 
 export default function _createTester(eachfn, check, getResult) {
     return function(arr, limit, iteratee, cb) {
@@ -27,9 +28,11 @@ export default function _createTester(eachfn, check, getResult) {
             });
         }
         if (arguments.length > 3) {
+            cb = cb || noop;
             eachfn(arr, limit, wrappedIteratee, done);
         } else {
             cb = iteratee;
+            cb = cb || noop;
             iteratee = limit;
             eachfn(arr, wrappedIteratee, done);
         }
diff --git a/mocha_test/detect.js b/mocha_test/detect.js
index 77c68c5af..9c9d06c64 100644
--- a/mocha_test/detect.js
+++ b/mocha_test/detect.js
@@ -72,6 +72,20 @@ describe("detect", function () {
         }, 50);
     });
 
+    it('detect no callback', function(done) {
+        var calls = [];
+
+        async.detect([1, 2, 3], function (val, cb) {
+            calls.push(val);
+            cb();
+        });
+
+        setTimeout(function () {
+            expect(calls).to.eql([1, 2, 3]);
+            done();
+        }, 10)
+    });
+
     it('detectSeries - ensure stop', function (done) {
         async.detectSeries([1, 2, 3, 4, 5], function (num, cb) {
             if (num > 3) throw new Error("detectSeries did not stop iterating");
diff --git a/mocha_test/some.js b/mocha_test/some.js
index d2c6e7757..9e7cef02b 100644
--- a/mocha_test/some.js
+++ b/mocha_test/some.js
@@ -49,6 +49,20 @@ describe("some", function () {
         });
     });
 
+    it('some no callback', function(done) {
+        var calls = [];
+
+        async.some([1, 2, 3], function (val, cb) {
+            calls.push(val);
+            cb();
+        });
+
+        setTimeout(function () {
+            expect(calls).to.eql([1, 2, 3]);
+            done();
+        }, 10)
+    });
+
     it('someLimit true', function(done){
         async.someLimit([3,1,2], 2, function(x, callback){
             setTimeout(function(){callback(null, x === 2);}, 0);