NodeJS Express CORS Middleware

// CORS middleware
app.use((req, res, next)=>{
    res.header('Access-Control-Allow-Origin','*')    
    res.header('Access-Control-Allow-Credentials','true')    
    res.header('Access-Control-Allow-Headers','X-Requested-With, Origin, Content-Type, X-Auth-Token , Authorization')
    
    if(req.method === "OPTIONS"){
        res.header('Access-Control-Allow-Methods','GET, PUT, POST, PATCH, DELETE, OPTIONS')
        return res.status(200).json({});
    }
    next();
});