promise-map-series - npm Package Compare versions

Comparing version 0.2.0 to 0.2.1

CHANGELOG.md

 # master
 
+# 0.2.1
+
+* Improve performance
+
 # 0.2.0
@@ -4,0 +8,0 @@

index.js

@@ -1,17 +0,16 @@
-var RSVP = require('rsvp')
+var Promise = require('rsvp').Promise;
 
-module.exports = function promiseMapSeries (array, iterator, thisArg) {
-  var results = new Array(array.length)
-  var index = 0
-  return array.reduce(function (promise, item) {
-      return promise.then(function () {
-          return iterator.call(thisArg, item, index, array)
-        })
-        .then(function (result) {
-          results[index++] = result
-        })
-    }, RSVP.resolve())
-    .then(function () {
-      return results
-    })
+module.exports = function sequence(array, iterator, thisArg) {
+  var length = array.length
+  var current = Promise.resolve()
+  var results = new Array(length)
+  var cb = arguments.length > 2 ? iterator.bind(thisArg) : iterator
+
+  for (var i = 0; i < length; ++i) {
+    current = results[i] = current.then(function(i) {
+      return cb(array[i], i, array)
+    }.bind(undefined, i))
+  }
+
+  return Promise.all(results)
 }

package.json

 {
   "name": "promise-map-series",
   "description": "Map over array avoiding parallel execution, using promises",
-  "version": "0.2.0",
+  "version": "0.2.1",
   "author": "Jo Liss <[e-mail]>",
@@ -13,3 +13,3 @@ "main": "index.js",
   "dependencies": {
-    "rsvp": "^3.0.6"
+    "rsvp": "^3.0.14"
   },
@@ -16,0 +16,0 @@ "devDependencies": {

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Improved metrics

Total package byte prevSize

5685

increased by0.3%

Worsened metrics

Lines of code

68

decreased by-4.23%

Dependency changes

• Updatedrsvp@^3.0.14