1 var baseMerge = require('./_baseMerge'),
2 createAssigner = require('./_createAssigner');
5 * This method is like `_.merge` except that it accepts `customizer` which
6 * is invoked to produce the merged values of the destination and source
7 * properties. If `customizer` returns `undefined`, merging is handled by the
8 * method instead. The `customizer` is invoked with six arguments:
9 * (objValue, srcValue, key, object, source, stack).
11 * **Note:** This method mutates `object`.
17 * @param {Object} object The destination object.
18 * @param {...Object} sources The source objects.
19 * @param {Function} customizer The function to customize assigned values.
20 * @returns {Object} Returns `object`.
23 * function customizer(objValue, srcValue) {
24 * if (_.isArray(objValue)) {
25 * return objValue.concat(srcValue);
29 * var object = { 'a': [1], 'b': [2] };
30 * var other = { 'a': [3], 'b': [4] };
32 * _.mergeWith(object, other, customizer);
33 * // => { 'a': [1, 3], 'b': [2, 4] }
35 var mergeWith = createAssigner(function(object, source, srcIndex, customizer) {
36 baseMerge(object, source, srcIndex, customizer);
39 module.exports = mergeWith;