--- /dev/null
+var clone = require('clone');
+
+module.exports = function(options, defaults) {
+ options = options || {};
+
+ Object.keys(defaults).forEach(function(key) {
+ if (typeof options[key] === 'undefined') {
+ options[key] = clone(defaults[key]);
+ }
+ });
+
+ return options;
+};
\ No newline at end of file