Bump to v4.0.0.

lodash.pick/index.js

@@ -1,50 +1,76 @@
 /**
- * lodash 3.1.0 (Custom Build) <https://lodash.com/>
- * Build: `lodash modern modularize exports="npm" -o ./`
- * Copyright 2012-2015 The Dojo Foundation <http://dojofoundation.org/>
- * Based on Underscore.js 1.8.2 <http://underscorejs.org/LICENSE>
- * Copyright 2009-2015 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
+ * 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 2009-2016 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
  * Available under MIT license <https://lodash.com/license>
  */
 var baseFlatten = require('lodash._baseflatten'),
-    bindCallback = require('lodash._bindcallback'),
-    pickByArray = require('lodash._pickbyarray'),
-    pickByCallback = require('lodash._pickbycallback'),
-    restParam = require('lodash.restparam');
+    rest = require('lodash.rest');
 
 /**
- * Creates an object composed of the picked `object` properties. Property
- * names may be specified as individual arguments or as arrays of property
- * names. If `predicate` is provided it's invoked for each property of `object`
- * picking the properties `predicate` returns truthy for. The predicate is
- * bound to `thisArg` and invoked with three arguments: (value, key, object).
+ * A specialized version of `_.reduce` for arrays without support for
+ * iteratee shorthands.
+ *
+ * @private
+ * @param {Array} array The array to iterate over.
+ * @param {Function} iteratee The function invoked per iteration.
+ * @param {*} [accumulator] The initial value.
+ * @param {boolean} [initFromArray] Specify using the first element of `array` as the initial value.
+ * @returns {*} Returns the accumulated value.
+ */
+function arrayReduce(array, iteratee, accumulator, initFromArray) {
+  var index = -1,
+      length = array.length;
+
+  if (initFromArray && length) {
+    accumulator = array[++index];
+  }
+  while (++index < length) {
+    accumulator = iteratee(accumulator, array[index], index, array);
+  }
+  return accumulator;
+}
+
+/**
+ * The base implementation of `_.pick` without support for individual
+ * property names.
+ *
+ * @private
+ * @param {Object} object The source object.
+ * @param {string[]} props The property names to pick.
+ * @returns {Object} Returns the new object.
+ */
+function basePick(object, props) {
+  object = Object(object);
+  return arrayReduce(props, function(result, key) {
+    if (key in object) {
+      result[key] = object[key];
+    }
+    return result;
+  }, {});
+}
+
+/**
+ * Creates an object composed of the picked `object` properties.
  *
  * @static
  * @memberOf _
  * @category Object
  * @param {Object} object The source object.
- * @param {Function|...(string|string[])} [predicate] The function invoked per
- *  iteration or property names to pick, specified as individual property
- *  names or arrays of property names.
- * @param {*} [thisArg] The `this` binding of `predicate`.
+ * @param {...(string|string[])} [props] The property names to pick, specified
+ *  individually or in arrays.
  * @returns {Object} Returns the new object.
  * @example
  *
- * var object = { 'user': 'fred', 'age': 40 };
+ * var object = { 'a': 1, 'b': '2', 'c': 3 };
  *
- * _.pick(object, 'user');
- * // => { 'user': 'fred' }
- *
- * _.pick(object, _.isString);
- * // => { 'user': 'fred' }
+ * _.pick(object, ['a', 'c']);
+ * // => { 'a': 1, 'c': 3 }
  */
-var pick = restParam(function(object, props) {
-  if (object == null) {
-    return {};
-  }
-  return typeof props[0] == 'function'
-    ? pickByCallback(object, bindCallback(props[0], props[1], 3))
-    : pickByArray(object, baseFlatten(props));
+var pick = rest(function(object, props) {
+  return object == null ? {} : basePick(object, baseFlatten(props));
 });
 
 module.exports = pick;