| var copyObject = require('./_copyObject'), | |
| createAssigner = require('./_createAssigner'), | |
| keysIn = require('./keysIn'); | |
| /** | |
| * This method is like `_.assignIn` except that it accepts `customizer` | |
| * which is invoked to produce the assigned values. If `customizer` returns | |
| * `undefined`, assignment is handled by the method instead. The `customizer` | |
| * is invoked with five arguments: (objValue, srcValue, key, object, source). | |
| * | |
| * **Note:** This method mutates `object`. | |
| * | |
| * @static | |
| * @memberOf _ | |
| * @since 4.0.0 | |
| * @alias extendWith | |
| * @category Object | |
| * @param {Object} object The destination object. | |
| * @param {...Object} sources The source objects. | |
| * @param {Function} [customizer] The function to customize assigned values. | |
| * @returns {Object} Returns `object`. | |
| * @see _.assignWith | |
| * @example | |
| * | |
| * function customizer(objValue, srcValue) { | |
| * return _.isUndefined(objValue) ? srcValue : objValue; | |
| * } | |
| * | |
| * var defaults = _.partialRight(_.assignInWith, customizer); | |
| * | |
| * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 }); | |
| * // => { 'a': 1, 'b': 2 } | |
| */ | |
| var assignInWith = createAssigner(function(object, source, srcIndex, customizer) { | |
| copyObject(source, keysIn(source), object, customizer); | |
| }); | |
| module.exports = assignInWith; | |