{%= include("install-bower", {save: true}) %}
var defaults = require('{%= name %}');
var obj = {a: 'c'};
defaults(obj, {a: 'bbb', d: 'c'});
console.log(obj);
//=> {a: 'c', d: 'c'}
Or immutable defaulting:
var defaults = require('{%= name %}/immutable');
var obj = {a: 'c'};
var defaulted = defaults(obj, {a: 'bbb', d: 'c'});
console.log(obj !== defaulted);
//=> true