map-series install npm install [--save/--save-dev] map-series component install ramitos/map-series api var map = require('map-series') map([1, 3, 2], function (x, callback) { setTimeout(function(){ callback(null, x*2) }, x*25)}, function (err, results){ if(err) throw err console.log(results) //=> [2, 6, 4]}) license MIT