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

node_modules/async/detectLimit.js

@@ -0,0 +1,48 @@
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+
+var _identity = require('lodash/identity');
+
+var _identity2 = _interopRequireDefault(_identity);
+
+var _createTester = require('./internal/createTester');
+
+var _createTester2 = _interopRequireDefault(_createTester);
+
+var _doParallelLimit = require('./internal/doParallelLimit');
+
+var _doParallelLimit2 = _interopRequireDefault(_doParallelLimit);
+
+var _findGetResult = require('./internal/findGetResult');
+
+var _findGetResult2 = _interopRequireDefault(_findGetResult);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+/**
+ * The same as [`detect`]{@link module:Collections.detect} but runs a maximum of `limit` async operations at a
+ * time.
+ *
+ * @name detectLimit
+ * @static
+ * @memberOf module:Collections
+ * @method
+ * @see [async.detect]{@link module:Collections.detect}
+ * @alias findLimit
+ * @category Collections
+ * @param {Array|Iterable|Object} coll - A collection to iterate over.
+ * @param {number} limit - The maximum number of async operations at a time.
+ * @param {AsyncFunction} iteratee - A truth test to apply to each item in `coll`.
+ * The iteratee must complete with a boolean value as its result.
+ * Invoked with (item, callback).
+ * @param {Function} [callback] - A callback which is called as soon as any
+ * iteratee returns `true`, or after all the `iteratee` functions have finished.
+ * Result will be the first item in the array that passes the truth test
+ * (iteratee) or the value `undefined` if none passed. Invoked with
+ * (err, result).
+ */
+exports.default = (0, _doParallelLimit2.default)((0, _createTester2.default)(_identity2.default, _findGetResult2.default));
+module.exports = exports['default'];