import { ApolloServer } from 'apollo-server'; var https = require('https'), url = require('url'); var server = https.createServer(function () { }); server.on('request', function (req, res) { let user_origin = url.parse(req.url, true).query.origin; // BAD: CORS too permissive const server_1 = new ApolloServer({ cors: { origin: true } }); // GOOD: restrictive CORS const server_2 = new ApolloServer({ cors: false }); // BAD: CORS too permissive const server_3 = new ApolloServer({ cors: { origin: null } }); // BAD: CORS is controlled by user const server_4 = new ApolloServer({ cors: { origin: user_origin } }); });