simpleHTTPServer.coffee

require('http').createServer((q,r)->require('fs').readFile(process.cwd()+q.url,(e,d)->r.end if e? then JSON.stringify(e) else d.toString())).listen 3000 or process.env.PORT

simpleHTTPServer.js

var http=require('http');
var fs=require('fs');
http.createServer(function(req, res) {
  console.log(
    "["+Date.now()+"]"+
    "METHOD:"+req.method+
    " | URL:"+req.url
  );
  fs.readFile(req.url==='/' && 'index.html' || process.cwd()+req.url, function(err, data) {
    res.write(err && JSON.stringify(err) || data.toString());
    res.end();
  });
}).listen(process.env.PORT or 3000);

simpleHTTPServer_beautified.coffee

require 'http'
.createServer (q,r) ->
  console.log "[#{new Date().toISOString()}]#{q.method}: #{q.url}"
  require('fs').readFile process.cwd()+q.url, (e,d)->
    r.end if e? then JSON.stringify(e) else d.toString()
.listen process.env.PORT or 3000

simpleHTTPServer_es6.js

require('http').createServer((q,r)=> {
  console.log(`[${new Date().toISOString()}]${q.method}: ${q.url}`);
  require('fs').readFile(process.cwd()+q.url, (e,d)=> {
    r.end(e && JSON.stringify(e) || d.toString());
  });
}).listen(process.env.PORT || 3000);