koa-plugins/node_modules/only/index.js
2020-03-01 17:38:34 +01:00

10 lines
247 B
JavaScript

module.exports = function(obj, keys){
obj = obj || {};
if ('string' == typeof keys) keys = keys.split(/ +/);
return keys.reduce(function(ret, key){
if (null == obj[key]) return ret;
ret[key] = obj[key];
return ret;
}, {});
};