server.js

const http=require("http"),fs=require("fs"),path=require("path"),server=http.createServer(((e,t)=>{let r="."+e.url;"./"===r&&(r="./index.html");const n={".html":"text/html",".css":"text/css",".js":"text/javascript"}[String(path.extname(r)).toLowerCase()]||"application/octet-stream";fs.readFile(r,((e,r)=>{e?"ENOENT"===e.code?(t.writeHead(404),t.end("404 Not Found")):(t.writeHead(500),t.end("500 Internal Server Error")):(t.writeHead(200,{"Content-Type":n}),t.end(r,"utf-8"))}))})),port=3e3;server.listen(3e3,(()=>{console.log("Server running at http://localhost:3000/")}));