1  /*!
 2   * object-visit <https://github.com/jonschlinkert/object-visit>
 3   *
 4   * Copyright (c) 2015, 2017, Jon Schlinkert.
 5   * Released under the MIT License.
 6   */
 7  
 8  'use strict';
 9  
10  var isObject = require('isobject');
11  
12  module.exports = function visit(thisArg, method, target, val) {
13    if (!isObject(thisArg) && typeof thisArg !== 'function') {
14      throw new Error('object-visit expects `thisArg` to be an object.');
15    }
16  
17    if (typeof method !== 'string') {
18      throw new Error('object-visit expects `method` name to be a string');
19    }
20  
21    if (typeof thisArg[method] !== 'function') {
22      return thisArg;
23    }
24  
25    var args = [].slice.call(arguments, 3);
26    target = target || {};
27  
28    for (var key in target) {
29      var arr = [key, target[key]].concat(args);
30      thisArg[method].apply(thisArg, arr);
31    }
32    return thisArg;
33  };