1  var baseClone = require('./_baseClone');
 2  
 3  /** Used to compose bitmasks for cloning. */
 4  var CLONE_DEEP_FLAG = 1,
 5      CLONE_SYMBOLS_FLAG = 4;
 6  
 7  /**
 8   * This method is like `_.cloneWith` except that it recursively clones `value`.
 9   *
10   * @static
11   * @memberOf _
12   * @since 4.0.0
13   * @category Lang
14   * @param {*} value The value to recursively clone.
15   * @param {Function} [customizer] The function to customize cloning.
16   * @returns {*} Returns the deep cloned value.
17   * @see _.cloneWith
18   * @example
19   *
20   * function customizer(value) {
21   *   if (_.isElement(value)) {
22   *     return value.cloneNode(true);
23   *   }
24   * }
25   *
26   * var el = _.cloneDeepWith(document.body, customizer);
27   *
28   * console.log(el === document.body);
29   * // => false
30   * console.log(el.nodeName);
31   * // => 'BODY'
32   * console.log(el.childNodes.length);
33   * // => 20
34   */
35  function cloneDeepWith(value, customizer) {
36    customizer = typeof customizer == 'function' ? customizer : undefined;
37    return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG, customizer);
38  }
39  
40  module.exports = cloneDeepWith;