noop-bench.js

function foo(cb) {
    cb();
}

console.time("anonymous function");

for (var i = 0; i < 10000000; i++) {
    foo(function () { });
}

console.timeEnd("anonymous function");

///

console.time("named function");
function CB(){}
for (var i = 0; i < 10000000; i++) {
    foo(CB);
}
console.timeEnd("named function");

///
console.time("node-noop");
var noop = require('node-noop').noop;
for (var i = 0; i < 10000000; i++) {
    foo(noop);
}
console.timeEnd("node-noop");

/*
anonymous function: 197.868ms
named function: 65.239ms
node-noop: 58.326ms
*/