1  /*!
 2   * to-object-path <https://github.com/jonschlinkert/to-object-path>
 3   *
 4   * Copyright (c) 2015, Jon Schlinkert.
 5   * Licensed under the MIT License.
 6   */
 7  
 8  'use strict';
 9  
10  var typeOf = require('kind-of');
11  
12  module.exports = function toPath(args) {
13    if (typeOf(args) !== 'arguments') {
14      args = arguments;
15    }
16    return filter(args).join('.');
17  };
18  
19  function filter(arr) {
20    var len = arr.length;
21    var idx = -1;
22    var res = [];
23  
24    while (++idx < len) {
25      var ele = arr[idx];
26      if (typeOf(ele) === 'arguments' || Array.isArray(ele)) {
27        res.push.apply(res, filter(ele));
28      } else if (typeof ele === 'string') {
29        res.push(ele);
30      }
31    }
32    return res;
33  }