"use strict"; let SCRIPT_DATA = "alert('this alert should be blocked');"; let WORKER_DATA = "onmessage = function(event) { postMessage('worker-loaded'); }"; function handleRequest(request, response) { const query = request.queryString; response.setHeader("Cache-Control", "no-cache", false); response.setStatusLine("1.1", 302, "Found"); if (query === "script" || query === "modulescript") { response.setHeader("Location", "data:text/javascript," + escape(SCRIPT_DATA), false); return; } if (query === "worker") { response.setHeader("Location", "data:text/javascript," + escape(WORKER_DATA), false); return; } // we should never get here; just in case return something unexpected response.write("do'h"); }