From 590a0f6214dcc23087c8968b6bc9be5ba61836a9 Mon Sep 17 00:00:00 2001
From: Jah Raphael <jahraphael@yahoo.com>
Date: Sun, 8 Jan 2017 09:22:24 -0600
Subject: [PATCH 1/2] Print the name of the actual missing dependency in
 `async.auto`

---
 lib/auto.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/auto.js b/lib/auto.js
index 61868070a..eca7d5311 100644
--- a/lib/auto.js
+++ b/lib/auto.js
@@ -137,7 +137,8 @@ export default function (tasks, concurrency, callback) {
         arrayEach(dependencies, function (dependencyName) {
             if (!tasks[dependencyName]) {
                 throw new Error('async.auto task `' + key +
-                    '` has a non-existent dependency in ' +
+                    '` has a non-existent dependency `' +
+                    dependencyName + '` in ' +
                     dependencies.join(', '));
             }
             addListener(dependencyName, function () {

From 4820ab88b9a6162ebcb456955c704bfb30af3827 Mon Sep 17 00:00:00 2001
From: Jah Raphael <jahraphael@yahoo.com>
Date: Sun, 8 Jan 2017 19:50:34 -0600
Subject: [PATCH 2/2] enhance "inexistent dependencies" test to check that
 exception message contains the missing dependency name

---
 mocha_test/auto.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mocha_test/auto.js b/mocha_test/auto.js
index 55f3b253f..e2e55f9f3 100644
--- a/mocha_test/auto.js
+++ b/mocha_test/auto.js
@@ -286,7 +286,7 @@ describe('auto', function () {
                     callback(null, 'task1');
                 }]
             });
-        }).to.throw();
+        }).to.throw(/dependency `noexist`/);
         done();
     });