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

node_modules/async/reflect.js

@@ -0,0 +1,81 @@
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+exports.default = reflect;
+
+var _initialParams = require('./internal/initialParams');
+
+var _initialParams2 = _interopRequireDefault(_initialParams);
+
+var _slice = require('./internal/slice');
+
+var _slice2 = _interopRequireDefault(_slice);
+
+var _wrapAsync = require('./internal/wrapAsync');
+
+var _wrapAsync2 = _interopRequireDefault(_wrapAsync);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+/**
+ * Wraps the async function in another function that always completes with a
+ * result object, even when it errors.
+ *
+ * The result object has either the property `error` or `value`.
+ *
+ * @name reflect
+ * @static
+ * @memberOf module:Utils
+ * @method
+ * @category Util
+ * @param {AsyncFunction} fn - The async function you want to wrap
+ * @returns {Function} - A function that always passes null to it's callback as
+ * the error. The second argument to the callback will be an `object` with
+ * either an `error` or a `value` property.
+ * @example
+ *
+ * async.parallel([
+ *     async.reflect(function(callback) {
+ *         // do some stuff ...
+ *         callback(null, 'one');
+ *     }),
+ *     async.reflect(function(callback) {
+ *         // do some more stuff but error ...
+ *         callback('bad stuff happened');
+ *     }),
+ *     async.reflect(function(callback) {
+ *         // do some more stuff ...
+ *         callback(null, 'two');
+ *     })
+ * ],
+ * // optional callback
+ * function(err, results) {
+ *     // values
+ *     // results[0].value = 'one'
+ *     // results[1].error = 'bad stuff happened'
+ *     // results[2].value = 'two'
+ * });
+ */
+function reflect(fn) {
+    var _fn = (0, _wrapAsync2.default)(fn);
+    return (0, _initialParams2.default)(function reflectOn(args, reflectCallback) {
+        args.push(function callback(error, cbArg) {
+            if (error) {
+                reflectCallback(null, { error: error });
+            } else {
+                var value;
+                if (arguments.length <= 2) {
+                    value = cbArg;
+                } else {
+                    value = (0, _slice2.default)(arguments, 1);
+                }
+                reflectCallback(null, { value: value });
+            }
+        });
+
+        return _fn.apply(this, args);
+    });
+}
+module.exports = exports['default'];