next-sample.js

var next = require("path/to/next");

function first(callbacks, params) {
    asyncProcess(function(res) {
        params.first = res;
        next(callbacks, params);
    });
}

function second(callbacks, params) {
    asyncProcess(function(res) {
        params.second = res;
        next(callbacks, params);
    });
}

function third(callbacks, params) {
    asyncProcess(function(res) {
        params.third = res;
        next(callbacks, params);
    });
}

function last(callbacks, params) {
    asyncProcess(function(res) {
        console.log(params);
        next(callbacks, params);
    });
}

next(
    [first, second, third, last],
    { first: null, second: null, third: null }
);