cjs-async/serial

var serial = require('cjs-async/serial'), taskList = [ function () { return 32; }, function ( callback ) { setTimeout(function () { callback(null, true); }, 10); }, function ( callback ) { setTimeout(function () { callback(null, 256); }, 20); }, function ( callback ) { setTimeout(function () { callback(null, '512'); }, 0); } ]; serial(taskList, function ( error, results ) { if ( !error ) { // results contains array of the given tasks execution results // [32, true, 256, '512'] console.log(results); } });