function Utils(){}
 
module.exports = Utils;
 
/**
 * Extend an options object with default values.
 * @static
 * @method defaults
 * @param  {object} options The options object. May be falsy: in this case, a new object is created and returned.
 * @param  {object} defaults An object containing default values.
 * @return {object} The modified options object.
 */
Utils.defaults = function(options, defaults){
    options = options || {};
 
    for(var key in defaults){
        if(!(key in options)){
            options[key] = defaults[key];
        }
    }
 
    return options;
};