From 611a4424b4490592fd037279f65e22630e66ffd4 Mon Sep 17 00:00:00 2001
From: Alexander Early <alexander.early@gmail.com>
Date: Wed, 1 Jun 2016 13:04:09 -0700
Subject: simplify index tracking

---
 lib/internal/map.js | 15 ++++-----------
 1 file changed, 4 insertions(+), 11 deletions(-)

(limited to 'lib/internal/map.js')

diff --git a/lib/internal/map.js b/lib/internal/map.js
index b587f59..2c2a750 100644
--- a/lib/internal/map.js
+++ b/lib/internal/map.js
@@ -1,23 +1,16 @@
-import isArrayLike from 'lodash/isArrayLike';
-import getIterator from './getIterator';
 import noop from 'lodash/noop';
-import okeys from 'lodash/keys';
-import indexOf from 'lodash/_baseIndexOf';
 import once from './once';
 
 export default function _asyncMap(eachfn, arr, iteratee, callback) {
     callback = once(callback || noop);
     arr = arr || [];
     var results = [];
-    var keys;
-    if (!isArrayLike(arr) && !getIterator(arr)) {
-        keys = okeys(arr);
-    }
+    var counter = 0;
 
-    eachfn(arr, function (value, index, callback) {
+    eachfn(arr, function (value, _, callback) {
+        var index = counter++;
         iteratee(value, function (err, v) {
-            var idx = keys ? indexOf(keys, index, 0) : index;
-            results[idx] = v;
+            results[index] = v;
             callback(err);
         });
     }, function (err) {
-- 
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