remove ES6 idiomsautoinject

2 files changed, 8 insertions, 11 deletions

diff --git a/README.md b/README.md
index fab0a74..b872bc8 100644
--- a/README.md
+++ b/README.md
@@ -1470,19 +1470,15 @@ async.autoInject({
 });
 ```
 
-If you are using a minifier that mangles parameter names, `autoInject` will not work with plain functions.  To work around this, you can explicitly specify the names of the parameters in an array, similar to Angular.js dependency injection.
+If you are using a JS minifier that mangles parameter names, `autoInject` will not work with plain functions, since the parameter names will be collapsed to a single letter identifier.  To work around this, you can explicitly specify the names of the parameters your task function needs in an array, similar to Angular.js dependency injection.
 
 ```js
 async.autoInject({
     //...
     write_file: ['get_data', 'make_folder', function(get_data, make_folder, callback){
-        // once there is some data and the directory exists,
-        // write the data to a file in the directory
         callback(null, 'filename');
     }],
     email_link: ['write_file', function(write_file, callback){
-        // once the file is written let's email a link to it...
-        // write_file contains the filename returned by write_file.
         callback(null, {'file':write_file, 'email':'user@example.com'});
     }]
     //...
diff --git a/lib/autoInject.js b/lib/autoInject.js
index 1b6fea4..f84a4d9 100644
--- a/lib/autoInject.js
+++ b/lib/autoInject.js
@@ -1,6 +1,7 @@
 import auto from './auto';
 import forOwn from 'lodash/forOwn';
 import arrayMap from 'lodash/_arrayMap';
+import clone from 'lodash/_baseClone';
 import isArray from 'lodash/isArray';
 
 var argsRegex =  /^function\s*[^\(]*\(\s*([^\)]*)\)/m;
@@ -16,28 +17,28 @@ export default function autoInject(tasks, callback) {
         var params;
 
         if (isArray(taskFn)) {
-            params = [...taskFn];
+            params = clone(taskFn);
             taskFn = params.pop();
 
-            newTasks[key] = [...params].concat(newTask);
+            newTasks[key] = clone(params).concat(newTask);
         } else if (taskFn.length === 0) {
             throw new Error("autoInject task functions require explicit parameters.");
         } else if (taskFn.length === 1) {
-            // no dependencies
+            // no dependencies, use the function as-is
             newTasks[key] = taskFn;
         } else {
             params = parseParams(taskFn);
             params.pop();
 
-            newTasks[key] = [...params].concat(newTask);
-
+            newTasks[key] = clone(params).concat(newTask);
         }
 
         function newTask(results, taskCb) {
             var newArgs = arrayMap(params, function (name) {
                 return results[name];
             });
-            taskFn(...newArgs.concat(taskCb));
+            newArgs.push(taskCb);
+            taskFn.apply(null, newArgs);
         }
     });