1  var assignValue = require('./_assignValue'),
 2      copyObject = require('./_copyObject'),
 3      createAssigner = require('./_createAssigner'),
 4      isArrayLike = require('./isArrayLike'),
 5      isPrototype = require('./_isPrototype'),
 6      keys = require('./keys');
 7  
 8  /** Used for built-in method references. */
 9  var objectProto = Object.prototype;
10  
11  /** Used to check objects for own properties. */
12  var hasOwnProperty = objectProto.hasOwnProperty;
13  
14  /**
15   * Assigns own enumerable string keyed properties of source objects to the
16   * destination object. Source objects are applied from left to right.
17   * Subsequent sources overwrite property assignments of previous sources.
18   *
19   * **Note:** This method mutates `object` and is loosely based on
20   * [`Object.assign`](https://mdn.io/Object/assign).
21   *
22   * @static
23   * @memberOf _
24   * @since 0.10.0
25   * @category Object
26   * @param {Object} object The destination object.
27   * @param {...Object} [sources] The source objects.
28   * @returns {Object} Returns `object`.
29   * @see _.assignIn
30   * @example
31   *
32   * function Foo() {
33   *   this.a = 1;
34   * }
35   *
36   * function Bar() {
37   *   this.c = 3;
38   * }
39   *
40   * Foo.prototype.b = 2;
41   * Bar.prototype.d = 4;
42   *
43   * _.assign({ 'a': 0 }, new Foo, new Bar);
44   * // => { 'a': 1, 'c': 3 }
45   */
46  var assign = createAssigner(function(object, source) {
47    if (isPrototype(source) || isArrayLike(source)) {
48      copyObject(source, keys(source), object);
49      return;
50    }
51    for (var key in source) {
52      if (hasOwnProperty.call(source, key)) {
53        assignValue(object, key, source[key]);
54      }
55    }
56  });
57  
58  module.exports = assign;