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

node_modules/async/find.js

@@ -0,0 +1,61 @@
+'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 _doParallel = require('./internal/doParallel');
+
+var _doParallel2 = _interopRequireDefault(_doParallel);
+
+var _findGetResult = require('./internal/findGetResult');
+
+var _findGetResult2 = _interopRequireDefault(_findGetResult);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+/**
+ * Returns the first value in `coll` that passes an async truth test. The
+ * `iteratee` is applied in parallel, meaning the first iteratee to return
+ * `true` will fire the detect `callback` with that result. That means the
+ * result might not be the first item in the original `coll` (in terms of order)
+ * that passes the test.
+
+ * If order within the original `coll` is important, then look at
+ * [`detectSeries`]{@link module:Collections.detectSeries}.
+ *
+ * @name detect
+ * @static
+ * @memberOf module:Collections
+ * @method
+ * @alias find
+ * @category Collections
+ * @param {Array|Iterable|Object} coll - A collection to iterate over.
+ * @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).
+ * @example
+ *
+ * async.detect(['file1','file2','file3'], function(filePath, callback) {
+ *     fs.access(filePath, function(err) {
+ *         callback(null, !err)
+ *     });
+ * }, function(err, result) {
+ *     // result now equals the first file in the list that exists
+ * });
+ */
+exports.default = (0, _doParallel2.default)((0, _createTester2.default)(_identity2.default, _findGetResult2.default));
+module.exports = exports['default'];