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

/**
 * The base implementation of `_.assignIn` without support for multiple sources
 * or `customizer` functions. 
 *
 * @private
 * @param {Object} object The destination object. 
 * @param {Object} source The source object. 
 * @returns {Object} Returns `object`. 
 */
function baseAssignIn(object, source) {
  return object && copyObject(source, keysIn(source), object);
}

module.exports = baseAssignIn;
