1 var merge = require('../object/merge');
4 * Used by `_.defaultsDeep` to customize its `_.merge` use.
7 * @param {*} objectValue The destination object property value.
8 * @param {*} sourceValue The source object property value.
9 * @returns {*} Returns the value to assign to the destination object.
11 function mergeDefaults(objectValue, sourceValue) {
12 return objectValue === undefined ? sourceValue : merge(objectValue, sourceValue, mergeDefaults);
15 module.exports = mergeDefaults;