1  var constant = require('./constant'),
 2      createInverter = require('./_createInverter'),
 3      identity = require('./identity');
 4  
 5  /** Used for built-in method references. */
 6  var objectProto = Object.prototype;
 7  
 8  /**
 9   * Used to resolve the
10   * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
11   * of values.
12   */
13  var nativeObjectToString = objectProto.toString;
14  
15  /**
16   * Creates an object composed of the inverted keys and values of `object`.
17   * If `object` contains duplicate values, subsequent values overwrite
18   * property assignments of previous values.
19   *
20   * @static
21   * @memberOf _
22   * @since 0.7.0
23   * @category Object
24   * @param {Object} object The object to invert.
25   * @returns {Object} Returns the new inverted object.
26   * @example
27   *
28   * var object = { 'a': 1, 'b': 2, 'c': 1 };
29   *
30   * _.invert(object);
31   * // => { '1': 'c', '2': 'b' }
32   */
33  var invert = createInverter(function(result, value, key) {
34    if (value != null &&
35        typeof value.toString != 'function') {
36      value = nativeObjectToString.call(value);
37    }
38  
39    result[value] = key;
40  }, constant(identity));
41  
42  module.exports = invert;