1var clone = require('clone'); 2 3module.exports = function(options, defaults) { 4 options = options || {}; 5 6 Object.keys(defaults).forEach(function(key) { 7 if (typeof options[key] === 'undefined') { 8 options[key] = clone(defaults[key]); 9 } 10 }); 11 12 return options; 13};