HORIZON PROJECT

var copyObject = require('./_copyObject'),

    createAssigner = require('./_createAssigner'),

    keysIn = require('./keysIn');

/**

 * This method is like `_.assign` except that it iterates over own and

 * inherited source properties.

 *

 * **Note:** This method mutates `object`.

 *

 * @static

 * @memberOf _

 * @since 4.0.0

 * @alias extend

 * @category Object

 * @param {Object} object The destination object.

 * @param {...Object} [sources] The source objects.

 * @returns {Object} Returns `object`.

 * @see _.assign

 * @example

 *

 * function Foo() {

 *   this.a = 1;

 * }

 *

 * function Bar() {

 *   this.c = 3;

 * }

 *

 * Foo.prototype.b = 2;

 * Bar.prototype.d = 4;

 *

 * _.assignIn({ 'a': 0 }, new Foo, new Bar);

 * // => { 'a': 1, 'b': 2, 'c': 3, 'd': 4 }

 */

var assignIn = createAssigner(function(object, source) {

  copyObject(source, keysIn(source), object);

});

module.exports = assignIn;