lodash/lodash._basecopy/index.js

/**
 * lodash 3.0.0 (Custom Build) <https://lodash.com/>
 * Build: `lodash modern modularize exports="npm" -o ./`
 * Copyright 2012-2015 The Dojo Foundation <http://dojofoundation.org/>
 * Based on Underscore.js 1.7.0 <http://underscorejs.org/LICENSE>
 * Copyright 2009-2015 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 * Available under MIT license <https://lodash.com/license>
 */

/**
 * Copies the properties of `source` to `object`.
 *
 * @private
 * @param {Object} source The object to copy properties from.
 * @param {Object} [object={}] The object to copy properties to.
 * @param {Array} props The property names to copy.
 * @returns {Object} Returns `object`.
 */
function baseCopy(source, object, props) {
  if (!props) {
    props = object;
    object = {};
  }
  var index = -1,
      length = props.length;

  while (++index < length) {
    var key = props[index];
    object[key] = source[key];
  }
  return object;
}

module.exports = baseCopy;