Bump to v4.0.0.

cloneDeepWith.js

@@ -0,0 +1,33 @@
+var baseClone = require('./internal/baseClone');
+
+/**
+ * This method is like `_.cloneWith` except that it recursively clones `value`.
+ *
+ * @static
+ * @memberOf _
+ * @category Lang
+ * @param {*} value The value to recursively clone.
+ * @param {Function} [customizer] The function to customize cloning.
+ * @returns {*} Returns the deep cloned value.
+ * @example
+ *
+ * function customizer(value) {
+ *   if (_.isElement(value)) {
+ *     return value.cloneNode(true);
+ *   }
+ * }
+ *
+ * var el = _.cloneDeep(document.body, customizer);
+ *
+ * console.log(el === document.body);
+ * // => false
+ * console.log(el.nodeName);
+ * // => 'BODY'
+ * console.log(el.childNodes.length);
+ * // => 20
+ */
+function cloneDeepWith(value, customizer) {
+  return baseClone(value, true, customizer);
+}
+
+module.exports = cloneDeepWith;