1 files changed, 12 insertions, 16 deletions

diff --git a/lib/internal/filter.js b/lib/internal/filter.js
index 1923264..4c9422b 100644
--- a/lib/internal/filter.js
+++ b/lib/internal/filter.js
@@ -1,17 +1,16 @@
 import isArrayLike from './isArrayLike';
-import property from './property';
 import noop from './noop';
 
 import wrapAsync from './wrapAsync';
 
 function filterArray(eachfn, arr, iteratee, callback) {
     var truthValues = new Array(arr.length);
-    eachfn(arr, function (x, index, callback) {
-        iteratee(x, function (err, v) {
+    eachfn(arr, (x, index, callback) => {
+        iteratee(x, (err, v) => {
             truthValues[index] = !!v;
             callback(err);
         });
-    }, function (err) {
+    }, err => {
         if (err) return callback(err);
         var results = [];
         for (var i = 0; i < arr.length; i++) {
@@ -23,29 +22,26 @@ function filterArray(eachfn, arr, iteratee, callback) {
 
 function filterGeneric(eachfn, coll, iteratee, callback) {
     var results = [];
-    eachfn(coll, function (x, index, callback) {
-        iteratee(x, function (err, v) {
+    eachfn(coll, (x, index, callback) => {
+        iteratee(x, (err, v) => {
             if (err) {
                 callback(err);
             } else {
                 if (v) {
-                    results.push({index: index, value: x});
+                    results.push({index, value: x});
                 }
                 callback();
             }
         });
-    }, function (err) {
-        if (err) {
-            callback(err);
-        } else {
-            callback(null, results.sort(function (a, b) {
-                return a.index - b.index;
-            }).map(property('value')));
-        }
+    }, err => {
+        if (err) return callback(err);
+        callback(null, results
+            .sort((a, b) => a.index - b.index)
+            .map(v => v.value));
     });
 }
 
 export default function _filter(eachfn, coll, iteratee, callback) {
     var filter = isArrayLike(coll) ? filterArray : filterGeneric;
-    filter(eachfn, coll, wrapAsync(iteratee), callback || noop);
+    return filter(eachfn, coll, wrapAsync(iteratee), callback || noop);
 }