Bump to v4.6.0.

updateWith.js

@@ -0,0 +1,35 @@
+define(['./_baseCastFunction', './_baseUpdate'], function(baseCastFunction, baseUpdate) {
+
+  /** Used as a safe reference for `undefined` in pre-ES5 environments. */
+  var undefined;
+
+  /**
+   * This method is like `_.update` except that it accepts `customizer` which is
+   * invoked to produce the objects of `path`.  If `customizer` returns `undefined`
+   * path creation is handled by the method instead. The `customizer` is invoked
+   * with three arguments: (nsValue, key, nsObject).
+   *
+   * **Note:** This method mutates `object`.
+   *
+   * @static
+   * @memberOf _
+   * @category Object
+   * @param {Object} object The object to modify.
+   * @param {Array|string} path The path of the property to set.
+   * @param {Function} updater The function to produce the updated value.
+   * @param {Function} [customizer] The function to customize assigned values.
+   * @returns {Object} Returns `object`.
+   * @example
+   *
+   * var object = {};
+   *
+   * _.updateWith(object, '[0][1]', _.constant('a'), Object);
+   * // => { '0': { '1': 'a' } }
+   */
+  function updateWith(object, path, updater, customizer) {
+    customizer = typeof customizer == 'function' ? customizer : undefined;
+    return object == null ? object : baseUpdate(object, path, baseCastFunction(updater), customizer);
+  }
+
+  return updateWith;
+});