Bump to v4.0.0.

lodash.at/index.js

@@ -1,37 +1,57 @@
 /**
- * lodash 3.2.0 (Custom Build) <https://lodash.com/>
- * Build: `lodash modern modularize exports="npm" -o ./`
- * Copyright 2012-2015 The Dojo Foundation <http://dojofoundation.org/>
+ * lodash 4.0.0 (Custom Build) <https://lodash.com/>
+ * Build: `lodash modularize exports="npm" -o ./`
+ * Copyright 2012-2016 The Dojo Foundation <http://dojofoundation.org/>
  * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
- * Copyright 2009-2015 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
+ * Copyright 2009-2016 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
  * Available under MIT license <https://lodash.com/license>
  */
-var baseAt = require('lodash._baseat'),
-    baseFlatten = require('lodash._baseflatten'),
-    restParam = require('lodash.restparam');
+var baseFlatten = require('lodash._baseflatten'),
+    get = require('lodash.get'),
+    rest = require('lodash.rest');
 
 /**
- * Creates an array of elements corresponding to the given keys, or indexes,
- * of `collection`. Keys may be specified as individual arguments or as arrays
- * of keys.
+ * The base implementation of `_.at` without support for individual paths.
+ *
+ * @private
+ * @param {Object} object The object to iterate over.
+ * @param {string[]} paths The property paths of elements to pick.
+ * @returns {Array} Returns the new array of picked elements.
+ */
+function baseAt(object, paths) {
+  var index = -1,
+      isNil = object == null,
+      length = paths.length,
+      result = Array(length);
+
+  while (++index < length) {
+    result[index] = isNil ? undefined : get(object, paths[index]);
+  }
+  return result;
+}
+
+/**
+ * Creates an array of values corresponding to `paths` of `object`.
  *
  * @static
  * @memberOf _
- * @category Collection
- * @param {Array|Object|string} collection The collection to iterate over.
- * @param {...(number|number[]|string|string[])} [props] The property names
- *  or indexes of elements to pick, specified individually or in arrays.
+ * @category Object
+ * @param {Object} object The object to iterate over.
+ * @param {...(string|string[])} [paths] The property paths of elements to pick,
+ *  specified individually or in arrays.
  * @returns {Array} Returns the new array of picked elements.
  * @example
  *
- * _.at(['a', 'b', 'c'], [0, 2]);
- * // => ['a', 'c']
+ * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] };
  *
- * _.at(['barney', 'fred', 'pebbles'], 0, 2);
- * // => ['barney', 'pebbles']
+ * _.at(object, ['a[0].b.c', 'a[1]']);
+ * // => [3, 4]
+ *
+ * _.at(['a', 'b', 'c'], 0, 2);
+ * // => ['a', 'c']
  */
-var at = restParam(function(collection, props) {
-  return baseAt(collection, baseFlatten(props));
+var at = rest(function(object, paths) {
+  return baseAt(object, baseFlatten(paths));
 });
 
 module.exports = at;