var liveServer = require("live-server"); const middleware = [function(req, res, next) { const tainted = req.url; // $ Source res.end(`${tainted}`); // $ Alert }]; middleware.push(function(req, res, next) { const tainted = req.url; // $ Source res.end(`${tainted}`); // $ Alert }); var params = { middleware }; liveServer.start(params);