--- /dev/null
+"use strict";
+module.exports = function(Promise, INTERNAL) {
+var PromiseReduce = Promise.reduce;
+var PromiseAll = Promise.all;
+
+function promiseAllThis() {
+ return PromiseAll(this);
+}
+
+function PromiseMapSeries(promises, fn) {
+ return PromiseReduce(promises, fn, INTERNAL, INTERNAL);
+}
+
+Promise.prototype.each = function (fn) {
+ return this.mapSeries(fn)
+ ._then(promiseAllThis, undefined, undefined, this, undefined);
+};
+
+Promise.prototype.mapSeries = function (fn) {
+ return PromiseReduce(this, fn, INTERNAL, INTERNAL);
+};
+
+Promise.each = function (promises, fn) {
+ return PromiseMapSeries(promises, fn)
+ ._then(promiseAllThis, undefined, undefined, promises, undefined);
+};
+
+Promise.mapSeries = PromiseMapSeries;
+};