NODE.js中的意外令牌SyntaxError：意外令牌）

Question

我收到此错误！你能帮我吗？

SyntaxError：意外令牌

(function (MobileDetect) {
var MobileDetect = require('mobile-detect'),
    md = new MobileDetect(req.headers['user-agent']);
})();
// more typically we would instantiate with 'window.navigator.userAgent'
// as user-agent; this string literal is only for better understanding
{
console.log( md.mobile() );          // 'Sony'
console.log( md.phone() );           // 'Sony'
console.log( md.tablet() );          // null
console.log( md.userAgent() );       // 'Safari'
console.log( md.os() );              // 'AndroidOS'
console.log( md.is('iPhone') );      // false
console.log( md.is('bot') );         // false
console.log( md.version('Webkit') );         // 534.3
console.log( md.versionStr('Build') );       // '4.1.A.0.562'
console.log( md.match('playstation|xbox') ); // false
}();

最好的问候， Paresh Pawar