Bump to v3.7.0.

object/assign.js

@@ -1,3 +1,4 @@
+import assignWith from '../internal/assignWith';
 import baseAssign from '../internal/baseAssign';
 import createAssigner from '../internal/createAssigner';
 
@@ -8,13 +9,17 @@ import createAssigner from '../internal/createAssigner';
  * The `customizer` is bound to `thisArg` and invoked with five arguments:
  * (objectValue, sourceValue, key, object, source).
  *
+ * **Note:** This method mutates `object` and is based on
+ * [`Object.assign`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-object.assign).
+ *
+ *
  * @static
  * @memberOf _
  * @alias extend
  * @category Object
  * @param {Object} object The destination object.
  * @param {...Object} [sources] The source objects.
- * @param {Function} [customizer] The function to customize assigning values.
+ * @param {Function} [customizer] The function to customize assigned values.
  * @param {*} [thisArg] The `this` binding of `customizer`.
  * @returns {Object} Returns `object`.
  * @example
@@ -24,12 +29,16 @@ import createAssigner from '../internal/createAssigner';
  *
  * // using a customizer callback
  * var defaults = _.partialRight(_.assign, function(value, other) {
- *   return typeof value == 'undefined' ? other : value;
+ *   return _.isUndefined(value) ? other : value;
  * });
  *
  * defaults({ 'user': 'barney' }, { 'age': 36 }, { 'user': 'fred' });
  * // => { 'user': 'barney', 'age': 36 }
  */
-var assign = createAssigner(baseAssign);
+var assign = createAssigner(function(object, source, customizer) {
+  return customizer
+    ? assignWith(object, source, customizer)
+    : baseAssign(object, source);
+});
 
 export default assign;