salix/services/client/server/middleware/cors.js

var cors = require('cors');
 
var whitelist = ['http://localhost:8080'];
var corsOptions = {
  origin: function(origin, callback){
    var originIsWhitelisted = whitelist.indexOf(origin) !== -1;
    callback(originIsWhitelisted ? null : 'Bad Request', originIsWhitelisted);
  }
}

module.exports = function() {
  return cors({origin: true});
};