added unit testing, and started implementing unit tests...phew

node_modules/async/applyEachSeries.js

@@ -0,0 +1,37 @@
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+
+var _applyEach = require('./internal/applyEach');
+
+var _applyEach2 = _interopRequireDefault(_applyEach);
+
+var _mapSeries = require('./mapSeries');
+
+var _mapSeries2 = _interopRequireDefault(_mapSeries);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+/**
+ * The same as [`applyEach`]{@link module:ControlFlow.applyEach} but runs only a single async operation at a time.
+ *
+ * @name applyEachSeries
+ * @static
+ * @memberOf module:ControlFlow
+ * @method
+ * @see [async.applyEach]{@link module:ControlFlow.applyEach}
+ * @category Control Flow
+ * @param {Array|Iterable|Object} fns - A collection of {@link AsyncFunction}s to all
+ * call with the same arguments
+ * @param {...*} [args] - any number of separate arguments to pass to the
+ * function.
+ * @param {Function} [callback] - the final argument should be the callback,
+ * called when all functions have completed processing.
+ * @returns {Function} - If only the first argument is provided, it will return
+ * a function which lets you pass in the arguments as if it were a single
+ * function call.
+ */
+exports.default = (0, _applyEach2.default)(_mapSeries2.default);
+module.exports = exports['default'];