/**
 * Функция, которая найдет ключ и вернет значения из массива данных
 * Возвращает данные с задержкой
 * @param key [string] Ключ, который искать
 * @param obj [object] Массив объектов key/val
 * @param callback
 */
var getValue = function (key, obj, callback) {
    var delay = randomInt(300, 1500);
    console.log('Start getVal "'+key+'", delay '+delay+'ms');
    setTimeout(function () {
        //Find key there

        //if key found return data to callback
        if (true)
            callback(null, key, delay, "data to return");
        else
            callback(new Error("Key not found!"), key, delay);
    }, delay);
    console.log('End getVal "'+key+'", delay '+delay+'ms');
};

var transformAsync = function(objects, map, data) {
    console.log('Function transformAsync is started.');
    console.log('-----------------------------------');
    var keys = Object.keys(map);
    keys.forEach(function(key){
        objects.forEach(function(object){
            if(typeof map[key] === 'object') {
                var nestedKeys = Object.keys(map[key]);
                nestedKeys.forEach(function(nestedKey) {
                    var nestedValue = map[key][nestedKey];
                    if(nestedValue === object.key) {
                        console.log('%s has been changed to %s', nestedValue, object.val);
                        map[key][nestedKey] = object.val;
                    }
                });
            } else {
                var value = map[key];
                if(value === object.key) {
                    console.log('%s has been changed to %s', value, object.val);
                    map[key] = object.val;
                }
            }
        });
    });
    console.log('------------------------');
    console.log('Function async is ended.');
    console.log('------------------------');
    data(null, map);
};

{
  "id": "0:0:0:1",
  "type": "0:0:0:2",
  "coords": {
    "latitude": "0:0:0:3:0",
    "longitude": "0:0:0:3:1"
  },
  "unixtime": "0:0:0:4",
  "uptime": "0:0:0:5"
}

[
  { "key": "0:0:0:1", "val": 25 },
  { "key": "0:0:0:2", "val": 1 },
  { "key": "0:0:0:3:0", "val": "n/a" },
  { "key": "0:0:0:3:1", "val": "n/a" },
  { "key": "0:0:0:4", "val": 0 },
  { "key": "0:0:0:5", "val": 0 }
]

var data = [
  {key: "0:0:0:1", val: 25},
  {key: "0:0:0:2", val: 1},
  {key: "0:0:0:3:0", val: "n/a"},
  {key: "0:0:0:3:1", val: "n/a"},
  {key: "0:0:0:4", val: 0},
  {key: "0:0:0:5", val: 0}
];

{
  "id": "0:0:0:1",
  "type": "0:0:0:2",
  "coords": {
    "latitude": "0:0:0:3:0",
    "longitude": "0:0:0:3:1"
  },
  "unixtime": "0:0:0:4",
  "uptime": "0:0:0:5"
}

{
  "id":25,
  "type":1,
  "coords": {
    "latitude":"n/a",
    "longitude":"n/a"
  },
  "unixtime":0,
  "uptime":0
}

var fs = require('fs');

var map = {};
var json = {};

var data = function(data, map) {
  fs.readFile(data, function(err, data) {
    if(err) throw err;

    var evaluated = eval(data+";data");

    evaluated.forEach(function(object) {

      fs.readFile(map, function(err, map) {
        if (err) throw err;

        map = JSON.parse(map, function(key, value) {
          if(object.key === value) {
            console.log(key + " " + object.val);
            json[key] = object.val;
            return(key + " " + object.val);
          }
        });

      console.log(json);
      });
    });
  });
};

data('data.json', 'map.json');

id 25
{ id: 25 }
uptime 0
{ id: 25, uptime: 0 }
longitude n/a
{ id: 25, uptime: 0, longitude: 'n/a' }
type 1
{ id: 25, uptime: 0, longitude: 'n/a', type: 1 }
latitude n/a
{ id: 25, uptime: 0, longitude: 'n/a', type: 1, latitude: 'n/a' }
unixtime 0
{ id: 25,
  uptime: 0,
  longitude: 'n/a',
  type: 1,
  latitude: 'n/a',
  unixtime: 0 }