parse-cookie.js

var genji = require('genji'),
benchmark = genji.util.benchmark;

var cookieStr = "_testSecure=OcG9biJ5yWUPiYMYqu1lXW8RejnnnzyoOJcVcrCpm6JnA5hBDp6I5aAzfGByhlyxWgY39vt0xq00zkReSVTXz3/lfaSg4CEjZPXmTRMP3HXkgWD5gcvybAubotduB1zd+pbL0utc170aCSK01qC2muD2MuFsMQ/Np9TGTBhVcZ1yPJ196TKlYhtseOOHlKPrCx17H8hLXPHd1B6mXoKCXdYzs4Pq4mX9nCYC8wgwiC6XrMor11+JrJ4deDPh0vzetRK6Be0AUF7FWKL0lMLKUg%3D%3D; expires=Sat, 06 Jul 2024 10:58:58 GMT";
var cookies = {};
var bm = benchmark.create('parse cookie', [
    function() {
        var cookies = {};
        cookieStr.replace(/^ *| *$/g, '')
        .split(/ *; */)
        .map(function(cookie) {
            var parsed = cookie.split(/ *= */);
            cookies[unescape(parsed[0])] = unescape(parsed[1]);
        });
        return cookies;
    },
    function() {
        var parts = cookieStr.split(/\s*;\s*/g).map(function(x){
            return x.split('=');
        });
        var cookies = parts.reduce(function(a, x){
            a[unescape(x[0])] = unescape(x[1]);
            return a;
        }, {});
        return cookies;
    }
]);

bm(100000)