Test for http request and the globals

server.js

var http = require('http'),
    util = require('util'),
    port = process.env.PORT || 3014,
    counter = 1;

/* global lang:true */
lang = 'ru';

function onRequest(req, res) {
    counter += 1;   // Oops

    // user's language is depends on some freaky logic...
    lang = counter % 2 === 0? 'ru' : 'en';  // Oops

    console.log(counter);
    console.log(lang);

    setTimeout(function() {
        var tmpl = util.format('We got %d request and the language is set to <b>%s</b>\n',
            counter, lang);

        res.writeHead(200, {
            'Content-Type' : 'text/html'
        });
        res.end(tmpl);
    }, 3000);
}

http.createServer(onRequest).listen(port);

test.sh

› ((curl "http://localhost:3014" &) ; curl "http://localhost:3014" &) 2> /dev/null

We got 3 request and the language is set to <b>en</b>   # ← this one should be 2nd with "ru"
We got 3 request and the language is set to <b>en</b>