async-iterate

lightweight iterators (reduce, map, each) of collections (array, plain object) with async callbacks

iterate::each(object, iterator, done)

object - array/object for iteration iterator - function(value, key, done) done - function(error)

var iterate = require('async-iterate');

var object = {a: 1, b: 2};

iterate.each(object, function (value, key, done) {
    // do something

    done();
}, function (err) {
    // do something
});

iterate::map(object, iterator, done)

object - array/object for iteration iterator - function(value, key, done) done - function(error, resultArray)

var iterate = require('async-iterate');

var object = {a: 1, b: 2};

iterate.each(object, function (value, key, done) {
    done(null, key);
}, function (err, result) {
    console.log(result); // ["a", "b"]
});

iterate::reduce(object, reduceObject, iterator, done)

object - array/object for iteration reduceObject - Mixed iterator - function(reduceObject, value, key, done) done - function(error, reduceObject)

var iterate = require('async-iterate');

var object = {a: 1, b: 2};

iterate.reduce(object, -1, function (result, value, key, done) {
    done(null, ++result);
}, function (err, result) {
    console.log(result); // 1
});